/* roulang page: index */
:root {
            --primary: #2E6DA4;
            --primary-dark: #245A8A;
            --primary-deeper: #1D4A72;
            --primary-light: #E8F0F7;
            --accent: #C9A227;
            --accent-light: #F5EDD6;
            --silver: #8C9BA8;
            --bg-white: #FFFFFF;
            --bg-alt: #F5F8FB;
            --text-heading: #1A2B3C;
            --text-body: #3C4A56;
            --text-muted: #6B7A86;
            --border: #DBE4EC;
            --radius-card: 10px;
            --radius-btn: 6px;
            --radius-input: 6px;
            --radius-badge: 4px;
            --shadow-card: 0 2px 12px rgba(26, 43, 60, 0.08);
            --shadow-hover: 0 6px 18px rgba(26, 43, 60, 0.12);
            --shadow-nav: 0 2px 16px rgba(26, 43, 60, 0.06);
            --transition: 0.25s ease;
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --section-pad-desktop: 88px 0;
            --section-pad-mobile: 56px 0;
            --nav-height: 68px;
            --container-max: 1200px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-body);
            background-color: var(--bg-white);
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition), border-color var(--transition), background-color var(--transition), box-shadow var(--transition), transform var(--transition);
        }

        a:hover {
            color: var(--accent);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        .section-pad {
            padding: var(--section-pad-desktop);
        }

        @media (max-width: 640px) {
            .section-pad {
                padding: var(--section-pad-mobile);
            }
        }

        .section-alt {
            background-color: var(--bg-alt);
        }

        .section-title {
            font-size: 30px;
            line-height: 1.35;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 24px;
            }
        }

        .section-subtitle {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-muted);
            max-width: 720px;
            margin-bottom: 40px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 14px;
        }

        .section-tag i {
            font-size: 12px;
        }

        /* ============ Header / Nav ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 999;
            background-color: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            box-shadow: 0 1px 0 var(--border);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-nav);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            min-width: 160px;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 17px;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .logo-text span {
            color: var(--primary);
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 30px;
            flex: 1;
            justify-content: center;
        }

        .header-nav a {
            font-size: 14px;
            color: var(--text-body);
            font-weight: 500;
            position: relative;
            padding: 6px 0;
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .header-nav a::after {
            content: "";
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
            transition: width var(--transition);
        }

        .header-nav a:hover {
            color: var(--primary);
        }

        .header-nav a:hover::after,
        .header-nav a.active::after {
            width: 24px;
        }

        .header-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .header-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background-color: var(--bg-alt);
            border: 1px solid var(--border);
            border-radius: var(--radius-input);
            padding: 8px 14px;
            width: 190px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .header-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 2px rgba(46, 109, 164, 0.15);
            background-color: #fff;
        }

        .header-search i {
            color: var(--silver);
            font-size: 13px;
        }

        .header-search input {
            border: none;
            background: transparent;
            font-size: 13px;
            color: var(--text-heading);
            outline: none;
            width: 100%;
            font-family: var(--font-stack);
        }

        .header-search input::placeholder {
            color: var(--silver);
        }

        .kbd-hint {
            font-size: 11px;
            color: var(--silver);
            background-color: #fff;
            border: 1px solid var(--border);
            border-radius: 3px;
            padding: 1px 6px;
            white-space: nowrap;
            font-weight: 500;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-family: var(--font-stack);
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            padding: 10px 22px;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all var(--transition);
            letter-spacing: 0.01em;
            white-space: nowrap;
            line-height: 1.4;
        }

        .btn-primary {
            background-color: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .btn-primary:hover {
            background-color: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(46, 109, 164, 0.3);
        }

        .btn-primary:active {
            transform: scale(0.97);
        }

        .btn-outline {
            background-color: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }

        .btn-outline:hover {
            background-color: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-1px);
        }

        .btn-white {
            background-color: #fff;
            color: var(--primary);
            border-color: #fff;
        }

        .btn-white:hover {
            background-color: var(--primary-light);
            border-color: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-1px);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }

        .btn-lg {
            padding: 14px 32px;
            font-size: 16px;
            border-radius: 8px;
        }

        .hamburger {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            color: var(--text-heading);
            font-size: 22px;
            line-height: 1;
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            bottom: 0;
            background-color: #fff;
            z-index: 998;
            padding: 24px;
            overflow-y: auto;
            flex-direction: column;
            gap: 8px;
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu a {
            font-size: 16px;
            color: var(--text-heading);
            font-weight: 500;
            padding: 12px 16px;
            border-radius: 8px;
            transition: background-color var(--transition), color var(--transition);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            background-color: var(--primary-light);
            color: var(--primary);
        }

        @media (max-width: 1024px) {
            .header-nav {
                display: none;
            }
            .header-search {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .header-actions .btn-primary {
                display: none;
            }
        }

        @media (max-width: 480px) {
            .header-logo {
                min-width: auto;
            }
            .logo-text {
                font-size: 16px;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }
            .header-actions {
                gap: 6px;
            }
        }

        /* ============ Hero ============ */
        .hero {
            position: relative;
            min-height: 78vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
            padding: 80px 24px;
        }

        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(255, 255, 255, 0.88) 0%, rgba(232, 240, 247, 0.75) 55%, rgba(255, 255, 255, 0.92) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
            width: 100%;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background-color: rgba(255, 255, 255, 0.85);
            border: 1px solid rgba(46, 109, 164, 0.25);
            border-radius: 999px;
            padding: 8px 20px;
            margin-bottom: 20px;
            letter-spacing: 0.04em;
        }

        .hero-badge i {
            color: var(--accent);
        }

        .hero h1 {
            font-size: 50px;
            line-height: 1.25;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 20px;
            letter-spacing: 0.01em;
        }

        .hero h1 .highlight {
            color: var(--primary);
            position: relative;
        }

        .hero-subtitle {
            font-size: 17px;
            line-height: 1.9;
            color: var(--text-body);
            max-width: 680px;
            margin: 0 auto 32px;
        }

        .hero-search-wrap {
            max-width: 600px;
            margin: 0 auto 28px;
        }

        .hero-search {
            display: flex;
            align-items: center;
            gap: 10px;
            background-color: #fff;
            border: 2px solid var(--border);
            border-radius: 12px;
            padding: 14px 20px;
            box-shadow: 0 8px 32px rgba(26, 43, 60, 0.1);
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .hero-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 8px 32px rgba(46, 109, 164, 0.18);
        }

        .hero-search i {
            color: var(--silver);
            font-size: 18px;
        }

        .hero-search input {
            border: none;
            background: transparent;
            font-size: 16px;
            color: var(--text-heading);
            outline: none;
            flex: 1;
            font-family: var(--font-stack);
        }

        .hero-search input::placeholder {
            color: var(--silver);
        }

        .hero-search-btn {
            background-color: var(--primary);
            color: #fff;
            border: none;
            border-radius: 8px;
            padding: 10px 24px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            font-family: var(--font-stack);
            transition: background-color var(--transition);
            white-space: nowrap;
        }

        .hero-search-btn:hover {
            background-color: var(--primary-dark);
        }

        .hero-categories {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-top: 8px;
        }

        .hero-cat-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-body);
            background-color: rgba(255, 255, 255, 0.8);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 8px 18px;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .hero-cat-link:hover {
            background-color: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 4px 14px rgba(46, 109, 164, 0.25);
        }

        .hero-cat-link i {
            font-size: 11px;
            color: var(--accent);
        }

        .hero-cat-link:hover i {
            color: #fff;
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            justify-content: center;
            margin-top: 28px;
        }

        .hero-stat {
            text-align: center;
        }

        .hero-stat-num {
            font-size: 30px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }

        .hero-stat-label {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 2px;
        }

        @media (max-width: 768px) {
            .hero {
                min-height: 60vh;
                padding: 56px 16px;
            }
            .hero h1 {
                font-size: 30px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .hero-search {
                padding: 10px 14px;
                border-radius: 8px;
            }
            .hero-search input {
                font-size: 14px;
            }
            .hero-search-btn {
                padding: 8px 16px;
                font-size: 12px;
            }
            .hero-categories {
                gap: 6px;
            }
            .hero-cat-link {
                font-size: 12px;
                padding: 6px 14px;
            }
            .hero-stat-num {
                font-size: 24px;
            }
            .hero-stats {
                gap: 20px;
            }
        }

        @media (max-width: 480px) {
            .hero h1 {
                font-size: 26px;
            }
            .hero-badge {
                font-size: 12px;
                padding: 6px 14px;
            }
            .hero-search-btn {
                padding: 8px 12px;
                font-size: 11px;
            }
        }

        /* ============ Pain Points Section ============ */
        .pain-section {
            background-color: var(--bg-white);
        }

        .pain-grid {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 48px;
            align-items: start;
        }

        .pain-left .section-title {
            font-size: 28px;
            margin-bottom: 18px;
        }

        .pain-left p {
            font-size: 15px;
            line-height: 1.9;
            color: var(--text-body);
        }

        .pain-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .pain-item {
            display: flex;
            gap: 18px;
            align-items: flex-start;
            padding: 24px;
            background-color: var(--bg-alt);
            border-radius: var(--radius-card);
            border-left: 3px solid var(--primary);
            transition: all var(--transition);
        }

        .pain-item:hover {
            background-color: #fff;
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-left-color: var(--accent);
        }

        .pain-icon {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            background-color: var(--primary-light);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 18px;
        }

        .pain-item h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 6px;
        }

        .pain-item p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-muted);
        }

        @media (max-width: 768px) {
            .pain-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .pain-item {
                padding: 18px;
                gap: 12px;
            }
            .pain-icon {
                width: 36px;
                height: 36px;
                font-size: 15px;
            }
        }

        /* ============ Solution Section ============ */
        .solution-section {
            background-color: var(--bg-alt);
        }

        .solution-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }

        .solution-text .section-title {
            font-size: 28px;
            margin-bottom: 14px;
        }

        .solution-text .lead {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-body);
            margin-bottom: 12px;
            font-weight: 500;
        }

        .solution-text p {
            font-size: 15px;
            line-height: 1.9;
            color: var(--text-body);
            margin-bottom: 12px;
        }

        .solution-text .btn {
            margin-top: 12px;
        }

        .solution-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            position: relative;
        }

        .solution-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 16/10;
            transition: transform 0.4s ease;
        }

        .solution-image:hover img {
            transform: scale(1.03);
        }

        @media (max-width: 768px) {
            .solution-wrap {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .solution-image img {
                aspect-ratio: 16/9;
            }
        }

        /* ============ Results / Metrics ============ */
        .results-section {
            background-color: var(--bg-white);
        }

        .results-grid {
            display: grid;
            grid-template-columns: 1fr 1fr 1.6fr;
            gap: 32px;
            align-items: stretch;
        }

        .result-card {
            background-color: var(--bg-alt);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            text-align: center;
            transition: all var(--transition);
            border: 1px solid var(--border);
        }

        .result-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: var(--primary-light);
        }

        .result-num {
            font-size: 44px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .result-num .accent {
            color: var(--accent);
        }

        .result-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
        }

        .result-card-wide {
            grid-column: span 1;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            color: #fff;
            display: flex;
            flex-direction: column;
            justify-content: center;
            border: none;
        }

        .result-card-wide h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            color: #fff;
        }

        .result-card-wide p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.85);
        }

        .result-card-wide .btn-white {
            margin-top: 16px;
            align-self: flex-start;
        }

        @media (max-width: 900px) {
            .results-grid {
                grid-template-columns: 1fr 1fr;
            }
            .result-card-wide {
                grid-column: span 2;
            }
        }

        @media (max-width: 520px) {
            .results-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .result-card-wide {
                grid-column: span 1;
            }
            .result-num {
                font-size: 34px;
            }
        }

        /* ============ Testimonials ============ */
        .testimonials-section {
            background-color: var(--bg-alt);
        }

        .testimonial-grid {
            display: grid;
            grid-template-columns: 1fr 1.6fr;
            gap: 32px;
            align-items: stretch;
        }

        .testimonial-card {
            background-color: #fff;
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .testimonial-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .testimonial-card.featured {
            background-color: #fff;
            border-left: 4px solid var(--primary);
        }

        .testimonial-quote {
            font-size: 15px;
            line-height: 1.9;
            color: var(--text-body);
            font-style: italic;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: auto;
        }

        .testimonial-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background-color: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-weight: 700;
            font-size: 16px;
            flex-shrink: 0;
        }

        .testimonial-info h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 2px;
        }

        .testimonial-info span {
            font-size: 12px;
            color: var(--text-muted);
        }

        .testimonial-right {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        @media (max-width: 768px) {
            .testimonial-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .testimonial-card {
                padding: 20px;
            }
        }

        /* ============ Brand Intro ============ */
        .brand-section {
            background-color: var(--bg-white);
        }

        .brand-wrap {
            max-width: 860px;
            margin: 0 auto;
            text-align: center;
        }

        .brand-wrap .section-title {
            margin-bottom: 20px;
        }

        .brand-wrap p {
            font-size: 15px;
            line-height: 2.0;
            color: var(--text-body);
            text-align: justify;
            margin-bottom: 12px;
        }

        .brand-highlight {
            display: inline-block;
            color: var(--primary);
            font-weight: 600;
            background-color: var(--primary-light);
            padding: 2px 10px;
            border-radius: 4px;
        }

        /* ============ Deep Content Sections ============ */
        .deep-section {
            background-color: var(--bg-white);
        }

        .deep-section.alt {
            background-color: var(--bg-alt);
        }

        .deep-full {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            margin-bottom: 0;
        }

        .deep-full img {
            width: 100%;
            height: 420px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .deep-full:hover img {
            transform: scale(1.02);
        }

        .deep-full-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(26, 43, 60, 0.1) 0%, rgba(26, 43, 60, 0.78) 100%);
            display: flex;
            align-items: flex-end;
            padding: 40px;
            border-radius: var(--radius-card);
        }

        .deep-full-overlay h3 {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .deep-full-overlay p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            line-height: 1.8;
        }

        .deep-split {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .deep-split.reverse {
            direction: rtl;
        }

        .deep-split.reverse>* {
            direction: ltr;
        }

        .deep-split-text h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 16px;
            line-height: 1.4;
        }

        .deep-split-text p {
            font-size: 15px;
            line-height: 1.95;
            color: var(--text-body);
            margin-bottom: 12px;
        }

        .deep-split-text ul {
            list-style: none;
            padding: 0;
            margin: 16px 0 0;
        }

        .deep-split-text ul li {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-body);
            padding-left: 24px;
            position: relative;
            margin-bottom: 8px;
        }

        .deep-split-text ul li::before {
            content: "\f058";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            color: var(--primary);
            position: absolute;
            left: 0;
            top: 2px;
            font-size: 14px;
        }

        .deep-split-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .deep-split-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 4/3;
            transition: transform 0.4s ease;
        }

        .deep-split-image:hover img {
            transform: scale(1.03);
        }

        .deep-asym-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 32px;
        }

        .deep-asym-main {
            background-color: var(--bg-alt);
            border-radius: var(--radius-card);
            padding: 36px;
            border: 1px solid var(--border);
        }

        .deep-asym-main h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 14px;
        }

        .deep-asym-main p {
            font-size: 15px;
            line-height: 1.95;
            color: var(--text-body);
            margin-bottom: 10px;
        }

        .deep-asym-side {
            background: linear-gradient(135deg, var(--primary-light) 0%, #fff 100%);
            border-radius: var(--radius-card);
            padding: 28px;
            border: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .deep-asym-side h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-heading);
        }

        .deep-asym-side p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-body);
        }

        .deep-asym-side .tag-row {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 8px;
        }

        .deep-asym-side .tag {
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background-color: #fff;
            border: 1px solid var(--primary-light);
            border-radius: 999px;
            padding: 4px 14px;
            white-space: nowrap;
        }

        @media (max-width: 900px) {
            .deep-full img {
                height: 280px;
            }
            .deep-full-overlay {
                padding: 24px;
            }
            .deep-full-overlay h3 {
                font-size: 20px;
            }
            .deep-split {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .deep-split.reverse {
                direction: ltr;
            }
            .deep-asym-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .deep-asym-main {
                padding: 24px;
            }
            .deep-asym-side {
                padding: 20px;
            }
        }

        /* ============ News Section ============ */
        .news-section {
            background-color: var(--bg-alt);
        }

        .news-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .news-card {
            background-color: #fff;
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .news-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: var(--primary-light);
        }

        .news-date {
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 0.04em;
        }

        .news-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.5;
            margin: 0;
        }

        .news-card h3 a:hover {
            color: var(--primary);
        }

        .news-summary {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-muted);
        }

        .news-more {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: auto;
            transition: color var(--transition), gap var(--transition);
        }

        .news-more:hover {
            color: var(--accent);
            gap: 10px;
        }

        .news-more i {
            font-size: 11px;
        }

        @media (max-width: 768px) {
            .news-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .news-card {
                padding: 18px;
            }
        }

        /* ============ Changelog Section ============ */
        .changelog-section {
            background-color: var(--bg-white);
        }

        .changelog-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0;
            border-left: 3px solid var(--primary-light);
            padding-left: 28px;
        }

        .changelog-item {
            padding: 18px 0;
            position: relative;
        }

        .changelog-item::before {
            content: "";
            position: absolute;
            left: -34px;
            top: 26px;
            width: 10px;
            height: 10px;
            background-color: var(--primary);
            border-radius: 50%;
            border: 2px solid #fff;
            box-shadow: 0 0 0 2px var(--primary-light);
        }

        .changelog-version {
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.04em;
            display: inline-block;
            background-color: var(--primary-light);
            padding: 2px 10px;
            border-radius: 4px;
            margin-bottom: 8px;
        }

        .changelog-item h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 6px;
        }

        .changelog-item p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-muted);
        }

        /* ============ Trust Badges ============ */
        .trust-section {
            background-color: var(--bg-alt);
        }

        .trust-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .trust-item {
            background-color: #fff;
            border-radius: var(--radius-card);
            padding: 24px 18px;
            text-align: center;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }

        .trust-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }

        .trust-icon {
            width: 48px;
            height: 48px;
            margin: 0 auto 12px;
            background-color: var(--primary-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 20px;
        }

        .trust-item h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 4px;
        }

        .trust-item p {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        @media (max-width: 900px) {
            .trust-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
        }

        @media (max-width: 480px) {
            .trust-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .trust-item {
                padding: 18px 14px;
            }
        }

        /* ============ Featured Categories ============ */
        .featured-cats-section {
            background-color: var(--bg-white);
        }

        .featured-cats-grid {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 20px;
        }

        .feat-cat-card {
            background-color: var(--bg-alt);
            border-radius: var(--radius-card);
            padding: 24px;
            border: 1px solid var(--border);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: 10px;
            cursor: pointer;
        }

        .feat-cat-card:hover {
            background-color: #fff;
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: var(--primary-light);
        }

        .feat-cat-card .icon-wrap {
            width: 44px;
            height: 44px;
            background-color: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            margin-bottom: 4px;
        }

        .feat-cat-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-heading);
            margin: 0;
        }

        .feat-cat-card p {
            font-size: 13px;
            line-height: 1.7;
            color: var(--text-muted);
            margin: 0;
        }

        .feat-cat-card .cat-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: auto;
        }

        .feat-cat-card:hover .cat-link {
            color: var(--accent);
        }

        @media (max-width: 900px) {
            .featured-cats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
        }

        @media (max-width: 550px) {
            .featured-cats-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
        }

        /* ============ FAQ ============ */
        .faq-section {
            background-color: var(--bg-alt);
        }

        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background-color: #fff;
            border-radius: 8px;
            margin-bottom: 12px;
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: var(--primary-light);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 18px 22px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 700;
            color: var(--text-heading);
            background-color: var(--primary-light);
            border: none;
            width: 100%;
            text-align: left;
            font-family: var(--font-stack);
            transition: background-color var(--transition);
        }

        .faq-question:hover {
            background-color: #DCE8F2;
        }

        .faq-question .faq-arrow {
            flex-shrink: 0;
            color: var(--primary);
            font-size: 14px;
            transition: transform 0.3s ease;
        }

        .faq-item.active .faq-arrow {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            background-color: #fff;
            padding: 0 22px;
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 18px 22px;
        }

        .faq-answer p {
            font-size: 14px;
            line-height: 1.9;
            color: var(--text-body);
            margin: 0;
        }

        /* ============ CTA Section ============ */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 60%, var(--primary-deeper) 100%);
            padding: 72px 0;
        }

        .cta-wrap {
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
        }

        .cta-wrap h2 {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.35;
        }

        .cta-wrap p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.9;
            margin-bottom: 28px;
        }

        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        .cta-buttons .btn-white {
            background-color: #fff;
            color: var(--primary);
            border-color: #fff;
        }

        .cta-buttons .btn-white:hover {
            background-color: var(--accent-light);
            border-color: var(--accent-light);
            color: var(--text-heading);
        }

        .cta-buttons .btn-outline-light {
            background-color: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.5);
        }

        .cta-buttons .btn-outline-light:hover {
            background-color: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 48px 16px;
            }
            .cta-wrap h2 {
                font-size: 24px;
            }
        }

        /* ============ Footer ============ */
        .site-footer {
            background-color: #1A2B3C;
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 28px;
            font-size: 13px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.4fr;
            gap: 36px;
            margin-bottom: 36px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .footer-col p {
            font-size: 13px;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.65);
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--accent);
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }

        .footer-logo .logo-icon {
            width: 32px;
            height: 32px;
            font-size: 14px;
            border-radius: 6px;
        }

        .footer-logo .logo-text {
            color: #fff;
            font-size: 16px;
        }

        .footer-logo .logo-text span {
            color: var(--accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.55);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 12px;
        }

        .footer-bottom a:hover {
            color: var(--accent);
        }

        .footer-legal {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
        }

        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ============ Scroll reveal ============ */
        .reveal-section {
            opacity: 0;
            transform: translateY(28px);
            animation: revealUp 0.7s ease forwards;
        }

        @keyframes revealUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ============ Foundation overrides ============ */
        .reveal {
            visibility: visible !important;
        }

        .grid-x {
            margin: 0;
        }

        /* ============ Print & misc ============ */
        @media print {
            .site-header,
            .site-footer,
            .hero-search-wrap,
            .cta-section {
                display: none;
            }
        }

/* roulang page: category2 */
:root {
        --primary: #2E6DA4;
        --primary-dark: #245A8A;
        --primary-deeper: #1D4A72;
        --primary-light: #E8F0F7;
        --accent: #C9A227;
        --accent-light: #F5EDD6;
        --silver: #8C9BA8;
        --bg-white: #FFFFFF;
        --bg-alt: #F5F8FB;
        --text-heading: #1A2B3C;
        --text-body: #3C4A56;
        --text-muted: #6B7A86;
        --border: #DBE4EC;
        --radius-card: 10px;
        --radius-btn: 6px;
        --radius-input: 6px;
        --radius-badge: 4px;
        --shadow-card: 0 2px 12px rgba(26,43,60,0.08);
        --shadow-hover: 0 6px 18px rgba(26,43,60,0.12);
        --shadow-nav: 0 2px 16px rgba(26,43,60,0.06);
        --transition: 0.25s ease;
        --font-stack: 'PingFang SC','Microsoft YaHei','Noto Sans CJK SC',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
        --section-pad-desktop: 88px 0;
        --section-pad-mobile: 56px 0;
        --nav-height: 68px;
        --container-max: 1200px;
    }
    html {
        scroll-behavior: smooth;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
    body {
        font-family: var(--font-stack);
        font-size: 16px;
        line-height: 1.85;
        color: var(--text-body);
        background-color: var(--bg-white);
        overflow-x: hidden;
        margin: 0;
        padding: 0;
    }
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
    a {
        color: var(--primary);
        text-decoration: none;
        transition: color var(--transition), border-color var(--transition), background-color var(--transition), box-shadow var(--transition), transform var(--transition);
    }
    a:hover {
        color: var(--accent);
    }
    a:focus-visible,
    button:focus-visible,
    input:focus-visible,
    textarea:focus-visible {
        outline: 2px solid var(--primary);
        outline-offset: 2px;
    }
    .container {
        max-width: var(--container-max);
        margin: 0 auto;
        padding: 0 24px;
    }
    @media (max-width: 640px) {
        .container {
            padding: 0 16px;
        }
    }
    .section-pad {
        padding: var(--section-pad-desktop);
    }
    @media (max-width: 640px) {
        .section-pad {
            padding: var(--section-pad-mobile);
        }
    }
    .section-alt {
        background-color: var(--bg-alt);
    }
    .section-title {
        font-size: 30px;
        line-height: 1.35;
        font-weight: 700;
        color: var(--text-heading);
        margin-bottom: 16px;
        letter-spacing: 0.01em;
    }
    @media (max-width: 640px) {
        .section-title {
            font-size: 24px;
        }
    }
    .section-subtitle {
        font-size: 16px;
        line-height: 1.9;
        color: var(--text-muted);
        max-width: 720px;
        margin-bottom: 40px;
    }
    .section-tag {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        font-weight: 600;
        letter-spacing: 0.06em;
        color: var(--primary);
        background-color: var(--primary-light);
        padding: 6px 16px;
        border-radius: 999px;
        margin-bottom: 14px;
    }
    .section-tag i {
        font-size: 12px;
    }
    /* ============ Header / Nav ============ */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 999;
        background-color: rgba(255,255,255,0.97);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--border);
        height: var(--nav-height);
        display: flex;
        align-items: center;
        box-shadow: 0 1px 0 var(--border);
        transition: box-shadow var(--transition);
    }
    .site-header.scrolled {
        box-shadow: var(--shadow-nav);
    }
    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 20px;
        width: 100%;
    }
    .header-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        flex-shrink: 0;
        min-width: 160px;
        color: var(--text-heading);
    }
    .header-logo:hover {
        color: var(--text-heading);
    }
    .logo-icon {
        width: 38px;
        height: 38px;
        background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
        border-radius: 8px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-size: 17px;
        flex-shrink: 0;
    }
    .logo-text {
        font-size: 18px;
        font-weight: 700;
        color: var(--text-heading);
        letter-spacing: 0.02em;
        white-space: nowrap;
    }
    .logo-text span {
        color: var(--primary);
    }
    .header-nav {
        display: flex;
        align-items: center;
        gap: 28px;
        flex: 1;
        justify-content: center;
    }
    .header-nav a {
        font-size: 14px;
        color: var(--text-body);
        font-weight: 500;
        position: relative;
        padding: 6px 0;
        white-space: nowrap;
        letter-spacing: 0.01em;
        transition: color var(--transition);
    }
    .header-nav a::after {
        content: "";
        position: absolute;
        bottom: -2px;
        left: 50%;
        transform: translateX(-50%);
        width: 0;
        height: 2px;
        background-color: var(--primary);
        border-radius: 2px;
        transition: width var(--transition);
    }
    .header-nav a:hover {
        color: var(--primary);
    }
    .header-nav a:hover::after {
        width: 100%;
    }
    .header-nav a.active {
        color: var(--primary);
        font-weight: 600;
    }
    .header-nav a.active::after {
        width: 100%;
    }
    .header-actions {
        display: flex;
        align-items: center;
        gap: 10px;
        flex-shrink: 0;
    }
    .header-search {
        display: flex;
        align-items: center;
        gap: 6px;
        border: 1px solid var(--border);
        border-radius: var(--radius-input);
        padding: 6px 10px;
        width: 180px;
        transition: border-color var(--transition), box-shadow var(--transition);
    }
    .header-search:focus-within {
        border-color: var(--primary);
        box-shadow: 0 0 0 2px rgba(46,109,164,0.15);
    }
    .header-search input {
        border: none;
        outline: none;
        font-size: 13px;
        color: var(--text-body);
        width: 100%;
        background: transparent;
        font-family: var(--font-stack);
    }
    .header-search input::placeholder {
        color: var(--text-muted);
    }
    .header-search .kbd-hint {
        font-size: 11px;
        color: var(--text-muted);
        background-color: var(--bg-alt);
        border: 1px solid var(--border);
        border-radius: 4px;
        padding: 1px 5px;
        white-space: nowrap;
        flex-shrink: 0;
    }
    .header-btn {
        width: 34px;
        height: 34px;
        border-radius: 50%;
        border: 1px solid var(--border);
        background: #fff;
        color: var(--text-body);
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        transition: all var(--transition);
    }
    .header-btn:hover {
        border-color: var(--primary);
        background: var(--primary-light);
        color: var(--primary);
    }
    .btn-primary {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background-color: var(--primary);
        color: #fff;
        border: 1px solid var(--primary);
        padding: 9px 18px;
        border-radius: var(--radius-btn);
        font-size: 14px;
        font-weight: 600;
        cursor: pointer;
        transition: all var(--transition);
        white-space: nowrap;
    }
    .btn-primary:hover {
        background-color: var(--primary-dark);
        border-color: var(--primary-dark);
        color: #fff;
        box-shadow: 0 4px 12px rgba(46,109,164,0.25);
    }
    .btn-primary:active {
        transform: scale(0.97);
    }
    .btn-outline {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: transparent;
        color: var(--primary);
        border: 1px solid var(--primary);
        padding: 9px 18px;
        border-radius: var(--radius-btn);
        font-size: 14px;
        font-weight: 600;
        cursor: pointer;
        transition: all var(--transition);
        white-space: nowrap;
    }
    .btn-outline:hover {
        background-color: var(--primary-light);
        color: var(--primary-dark);
    }
    .btn-outline:active {
        transform: scale(0.97);
    }
    .search-toggle {
        display: none;
    }
    /* Mobile nav */
    .nav-toggle {
        display: none;
        width: 38px;
        height: 38px;
        background: transparent;
        border: 1px solid var(--border);
        border-radius: 6px;
        cursor: pointer;
        font-size: 18px;
        color: var(--text-heading);
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
    }
    @media (max-width: 1024px) {
        .header-nav {
            gap: 18px;
        }
        .header-search {
            width: 140px;
        }
    }
    @media (max-width: 768px) {
        .header-nav {
            display: none;
            position: absolute;
            top: var(--nav-height);
            left: 0;
            right: 0;
            background: #fff;
            flex-direction: column;
            align-items: flex-start;
            gap: 0;
            padding: 10px 24px 20px;
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-nav);
        }
        .header-nav.nav-open {
            display: flex;
        }
        .header-nav a {
            padding: 12px 0;
            border-bottom: 1px solid var(--bg-alt);
            width: 100%;
            font-size: 15px;
        }
        .header-nav a::after {
            display: none;
        }
        .nav-toggle {
            display: flex;
        }
        .header-search {
            width: 100%;
            max-width: 220px;
        }
        .header-logo {
            min-width: auto;
        }
        .logo-text {
            font-size: 16px;
        }
        .header-actions {
            gap: 6px;
        }
        .header-btn {
            display: none;
        }
        .search-toggle {
            display: flex;
        }
    }
    @media (max-width: 480px) {
        .header-search {
            display: none;
        }
        .header-search.search-open {
            display: flex;
            position: absolute;
            top: var(--nav-height);
            left: 0;
            right: 0;
            max-width: none;
            border-radius: 0;
            padding: 10px 16px;
            background: #fff;
            border-left: none;
            border-right: none;
        }
        .btn-primary {
            padding: 8px 12px;
            font-size: 13px;
        }
        .logo-icon {
            width: 32px;
            height: 32px;
            font-size: 14px;
        }
        .logo-text {
            font-size: 15px;
        }
    }
    /* ============ Breadcrumb ============ */
    .breadcrumb-wrap {
        background-color: var(--bg-alt);
        padding: 14px 0;
        border-bottom: 1px solid var(--border);
    }
    .breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        color: var(--text-muted);
        flex-wrap: wrap;
    }
    .breadcrumb a {
        color: var(--text-muted);
        transition: color var(--transition);
    }
    .breadcrumb a:hover {
        color: var(--primary);
    }
    .breadcrumb .sep {
        color: var(--silver);
    }
    .breadcrumb .current {
        color: var(--primary);
        font-weight: 600;
    }
    /* ============ Hero Banner ============ */
    .page-hero {
        background: linear-gradient(135deg, rgba(26,43,60,0.82) 0%, rgba(46,109,164,0.72) 55%, rgba(201,162,39,0.55) 100%), url('/assets/images/backpic/back-2.webp');
        background-size: cover;
        background-position: center;
        min-height: 280px;
        display: flex;
        align-items: center;
        padding: 48px 0;
        position: relative;
    }
    .page-hero .container {
        position: relative;
        z-index: 2;
    }
    .page-hero h1 {
        font-size: 42px;
        font-weight: 700;
        color: #fff;
        margin-bottom: 12px;
        letter-spacing: 0.01em;
        line-height: 1.3;
    }
    .page-hero .hero-sub {
        font-size: 17px;
        color: rgba(255,255,255,0.9);
        max-width: 560px;
        line-height: 1.8;
        margin-bottom: 0;
    }
    @media (max-width: 640px) {
        .page-hero {
            min-height: 200px;
            padding: 32px 0;
        }
        .page-hero h1 {
            font-size: 28px;
        }
        .page-hero .hero-sub {
            font-size: 14px;
        }
    }
    /* ============ News Layout ============ */
    .news-layout {
        display: grid;
        grid-template-columns: 1fr 320px;
        gap: 36px;
        align-items: start;
    }
    @media (max-width: 900px) {
        .news-layout {
            grid-template-columns: 1fr;
            gap: 28px;
        }
    }
    .news-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 24px;
    }
    @media (max-width: 768px) {
        .news-grid {
            grid-template-columns: 1fr;
        }
    }
    .news-card {
        background: #fff;
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-card);
        overflow: hidden;
        transition: box-shadow var(--transition), transform var(--transition);
        display: flex;
        flex-direction: column;
        border: 1px solid var(--border);
    }
    .news-card:hover {
        box-shadow: var(--shadow-hover);
        transform: translateY(-3px);
    }
    .news-card-img {
        aspect-ratio: 16/9;
        overflow: hidden;
        background-color: var(--primary-light);
        position: relative;
    }
    .news-card-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.4s ease;
    }
    .news-card:hover .news-card-img img {
        transform: scale(1.04);
    }
    .news-card-body {
        padding: 20px 22px 24px;
        flex: 1;
        display: flex;
        flex-direction: column;
    }
    .news-date {
        font-size: 12px;
        color: var(--text-muted);
        display: flex;
        align-items: center;
        gap: 6px;
        margin-bottom: 8px;
        letter-spacing: 0.02em;
    }
    .news-date i {
        color: var(--primary);
        font-size: 12px;
    }
    .news-card-title {
        font-size: 17px;
        font-weight: 700;
        color: var(--text-heading);
        line-height: 1.5;
        margin-bottom: 10px;
    }
    .news-card-title a {
        color: var(--text-heading);
        transition: color var(--transition);
    }
    .news-card-title a:hover {
        color: var(--primary);
    }
    .news-excerpt {
        font-size: 14px;
        color: var(--text-body);
        line-height: 1.75;
        flex: 1;
        margin-bottom: 16px;
    }
    .news-more {
        font-size: 13px;
        font-weight: 600;
        color: var(--primary);
        display: inline-flex;
        align-items: center;
        gap: 6px;
        transition: all var(--transition);
        border-bottom: 1px solid transparent;
        align-self: flex-start;
    }
    .news-more:hover {
        color: var(--accent);
        border-bottom-color: var(--accent);
    }
    .news-more i {
        font-size: 12px;
        transition: transform var(--transition);
    }
    .news-more:hover i {
        transform: translateX(3px);
    }
    /* ============ Sidebar ============ */
    .sidebar {
        position: sticky;
        top: calc(var(--nav-height) + 20px);
        display: flex;
        flex-direction: column;
        gap: 24px;
    }
    @media (max-width: 900px) {
        .sidebar {
            position: static;
        }
    }
    .sidebar-card {
        background: #fff;
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-card);
        border: 1px solid var(--border);
        padding: 24px;
    }
    .sidebar-card h3 {
        font-size: 16px;
        font-weight: 700;
        color: var(--text-heading);
        margin-bottom: 16px;
        padding-bottom: 10px;
        border-bottom: 2px solid var(--primary-light);
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .sidebar-card h3 i {
        color: var(--primary);
        font-size: 14px;
    }
    .filter-list {
        list-style: none;
        margin: 0;
        padding: 0;
        display: flex;
        flex-direction: column;
        gap: 8px;
    }
    .filter-list li a {
        display: flex;
        align-items: center;
        justify-content: space-between;
        font-size: 14px;
        color: var(--text-body);
        padding: 8px 12px;
        border-radius: var(--radius-btn);
        transition: all var(--transition);
        border-left: 3px solid transparent;
    }
    .filter-list li a:hover {
        background-color: var(--primary-light);
        color: var(--primary);
        border-left-color: var(--primary);
    }
    .filter-list li a .count {
        font-size: 12px;
        color: var(--text-muted);
        background-color: var(--bg-alt);
        border-radius: 999px;
        padding: 1px 8px;
        font-weight: 500;
    }
    .filter-list li a.active {
        background-color: var(--primary-light);
        color: var(--primary);
        border-left-color: var(--primary);
        font-weight: 600;
    }
    .tag-cloud {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
    }
    .tag-cloud a {
        font-size: 12px;
        color: var(--text-body);
        background-color: var(--bg-alt);
        border: 1px solid var(--border);
        border-radius: 999px;
        padding: 5px 12px;
        transition: all var(--transition);
    }
    .tag-cloud a:hover {
        background-color: var(--primary);
        color: #fff;
        border-color: var(--primary);
    }
    .sidebar-promo {
        background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
        border-radius: var(--radius-card);
        padding: 24px;
        color: #fff;
        box-shadow: var(--shadow-card);
    }
    .sidebar-promo h3 {
        font-size: 16px;
        font-weight: 700;
        color: #fff;
        margin-bottom: 8px;
    }
    .sidebar-promo p {
        font-size: 13px;
        color: rgba(255,255,255,0.85);
        line-height: 1.7;
        margin-bottom: 16px;
    }
    .sidebar-promo a {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-size: 13px;
        font-weight: 600;
        color: #fff;
        background-color: rgba(255,255,255,0.15);
        border: 1px solid rgba(255,255,255,0.3);
        padding: 8px 14px;
        border-radius: var(--radius-btn);
        transition: all var(--transition);
    }
    .sidebar-promo a:hover {
        background-color: rgba(255,255,255,0.25);
        border-color: rgba(255,255,255,0.5);
        color: #fff;
    }
    /* ============ Section CTA ============ */
    .cta-section {
        background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 60%, var(--primary-deeper) 100%);
        color: #fff;
        padding: 72px 0;
        text-align: center;
    }
    .cta-section h2 {
        font-size: 32px;
        font-weight: 700;
        color: #fff;
        margin-bottom: 16px;
        letter-spacing: 0.01em;
    }
    .cta-section p {
        font-size: 16px;
        color: rgba(255,255,255,0.88);
        max-width: 560px;
        margin: 0 auto 28px;
        line-height: 1.8;
    }
    .cta-section .btn-light {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background-color: #fff;
        color: var(--primary);
        border: none;
        padding: 12px 26px;
        border-radius: var(--radius-btn);
        font-size: 15px;
        font-weight: 700;
        cursor: pointer;
        transition: all var(--transition);
        margin-right: 10px;
    }
    .cta-section .btn-light:hover {
        background-color: var(--accent);
        color: #fff;
        box-shadow: 0 6px 18px rgba(0,0,0,0.2);
    }
    .cta-section .btn-ghost {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: transparent;
        color: #fff;
        border: 1px solid rgba(255,255,255,0.6);
        padding: 12px 26px;
        border-radius: var(--radius-btn);
        font-size: 15px;
        font-weight: 600;
        cursor: pointer;
        transition: all var(--transition);
    }
    .cta-section .btn-ghost:hover {
        background-color: rgba(255,255,255,0.12);
        border-color: #fff;
        color: #fff;
    }
    @media (max-width: 640px) {
        .cta-section {
            padding: 48px 0;
        }
        .cta-section h2 {
            font-size: 24px;
        }
        .cta-section p {
            font-size: 14px;
        }
        .cta-section .btn-light,
        .cta-section .btn-ghost {
            padding: 10px 18px;
            font-size: 13px;
            display: block;
            width: 100%;
            max-width: 280px;
            margin: 0 auto 12px;
            justify-content: center;
        }
    }
    /* ============ Insight / Featured ============ */
    .insight-block {
        display: grid;
        grid-template-columns: 1.2fr 0.8fr;
        gap: 40px;
        align-items: center;
        padding: 48px 0;
    }
    .insight-block.reverse {
        grid-template-columns: 0.8fr 1.2fr;
    }
    .insight-block .text-col h2 {
        font-size: 26px;
        font-weight: 700;
        color: var(--text-heading);
        margin-bottom: 14px;
        line-height: 1.4;
    }
    .insight-block .text-col p {
        font-size: 15px;
        color: var(--text-body);
        line-height: 1.85;
        margin-bottom: 12px;
    }
    .insight-block .img-col {
        aspect-ratio: 16/10;
        border-radius: var(--radius-card);
        overflow: hidden;
        background-color: var(--primary-light);
        box-shadow: var(--shadow-card);
    }
    .insight-block .img-col img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
    @media (max-width: 768px) {
        .insight-block,
        .insight-block.reverse {
            grid-template-columns: 1fr;
            gap: 24px;
            padding: 32px 0;
        }
        .insight-block .text-col h2 {
            font-size: 20px;
        }
    }
    /* ============ Footer ============ */
    .site-footer {
        background-color: #1A2B3C;
        color: rgba(255,255,255,0.8);
        padding: 56px 0 28px;
        font-size: 14px;
    }
    .site-footer .container {
        max-width: var(--container-max);
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
        gap: 32px;
        margin-bottom: 36px;
    }
    @media (max-width: 900px) {
        .footer-grid {
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
    }
    @media (max-width: 520px) {
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 24px;
        }
    }
    .footer-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        margin-bottom: 16px;
        color: #fff;
    }
    .footer-logo .logo-icon {
        background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    }
    .footer-logo .logo-text {
        color: #fff;
    }
    .footer-col p {
        font-size: 13px;
        color: rgba(255,255,255,0.65);
        line-height: 1.7;
        margin-bottom: 16px;
    }
    .footer-col h4 {
        font-size: 15px;
        font-weight: 700;
        color: #fff;
        margin-bottom: 14px;
    }
    .footer-col ul {
        list-style: none;
        margin: 0;
        padding: 0;
        display: flex;
        flex-direction: column;
        gap: 8px;
    }
    .footer-col ul li a {
        font-size: 13px;
        color: rgba(255,255,255,0.7);
        transition: color var(--transition);
    }
    .footer-col ul li a:hover {
        color: var(--accent);
    }
    .footer-bottom {
        border-top: 1px solid rgba(255,255,255,0.12);
        padding-top: 20px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 12px;
        font-size: 12px;
        color: rgba(255,255,255,0.55);
    }
    .footer-legal {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 16px;
        font-size: 12px;
        color: rgba(255,255,255,0.55);
    }
    .footer-legal a {
        color: rgba(255,255,255,0.6);
        transition: color var(--transition);
    }
    .footer-legal a:hover {
        color: var(--accent);
    }
    /* ============ FAQ ============ */
    .faq-item {
        background: #fff;
        border-radius: 8px;
        border: 1px solid var(--border);
        margin-bottom: 12px;
        overflow: hidden;
        transition: box-shadow var(--transition);
    }
    .faq-item:hover {
        box-shadow: var(--shadow-card);
    }
    .faq-question {
        width: 100%;
        background: var(--primary-light);
        border: none;
        padding: 16px 20px;
        text-align: left;
        font-size: 15px;
        font-weight: 600;
        color: var(--text-heading);
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
        transition: all var(--transition);
        font-family: var(--font-stack);
    }
    .faq-question:hover {
        background-color: #D5E4F0;
    }
    .faq-question i {
        font-size: 14px;
        color: var(--primary);
        transition: transform var(--transition);
        flex-shrink: 0;
    }
    .faq-item.open .faq-question i {
        transform: rotate(180deg);
    }
    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s ease;
        background: #fff;
    }
    .faq-item.open .faq-answer {
        max-height: 500px;
    }
    .faq-answer-inner {
        padding: 16px 20px 20px;
        font-size: 14px;
        color: var(--text-body);
        line-height: 1.8;
        border-top: 1px solid var(--border);
    }
    /* ============ Newsletter strip ============ */
    .newsletter-strip {
        background: var(--primary-light);
        border-radius: var(--radius-card);
        padding: 28px 32px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 20px;
        flex-wrap: wrap;
    }
    .newsletter-strip .nl-text h3 {
        font-size: 18px;
        font-weight: 700;
        color: var(--text-heading);
        margin-bottom: 4px;
    }
    .newsletter-strip .nl-text p {
        font-size: 13px;
        color: var(--text-muted);
        margin: 0;
    }
    .nl-form {
        display: flex;
        gap: 10px;
        flex-wrap: wrap;
    }
    .nl-form input {
        border: 1px solid var(--border);
        border-radius: var(--radius-input);
        padding: 10px 14px;
        font-size: 14px;
        font-family: var(--font-stack);
        min-width: 220px;
        transition: all var(--transition);
        background: #fff;
        color: var(--text-body);
    }
    .nl-form input:focus {
        outline: none;
        border-color: var(--primary);
        box-shadow: 0 0 0 2px rgba(46,109,164,0.15);
    }
    @media (max-width: 640px) {
        .newsletter-strip {
            padding: 20px;
            flex-direction: column;
            align-items: flex-start;
        }
        .nl-form input {
            min-width: 100%;
        }
    }
    /* Utility */
    .mb-0 { margin-bottom: 0 !important; }
    .mb-8 { margin-bottom: 8px !important; }
    .mb-16 { margin-bottom: 16px !important; }
    .mb-24 { margin-bottom: 24px !important; }
    .mb-32 { margin-bottom: 32px !important; }
    .mb-40 { margin-bottom: 40px !important; }
    .mb-48 { margin-bottom: 48px !important; }
    .mt-0 { margin-top: 0 !important; }
    .mt-16 { margin-top: 16px !important; }
    .mt-24 { margin-top: 24px !important; }
    .text-center { text-align: center !important; }
    .sr-only {
        position: absolute;
        width: 1px;
        height: 1px;
        padding: 0;
        margin: -1px;
        overflow: hidden;
        clip: rect(0,0,0,0);
        white-space: nowrap;
        border: 0;
    }

/* roulang page: category3 */
:root {
            --primary: #2E6DA4;
            --primary-dark: #245A8A;
            --primary-deeper: #1D4A72;
            --primary-light: #E8F0F7;
            --accent: #C9A227;
            --accent-light: #F5EDD6;
            --silver: #8C9BA8;
            --bg-white: #FFFFFF;
            --bg-alt: #F5F8FB;
            --text-heading: #1A2B3C;
            --text-body: #3C4A56;
            --text-muted: #6B7A86;
            --border: #DBE4EC;
            --radius-card: 10px;
            --radius-btn: 6px;
            --radius-input: 6px;
            --radius-badge: 4px;
            --shadow-card: 0 2px 12px rgba(26, 43, 60, 0.08);
            --shadow-hover: 0 6px 18px rgba(26, 43, 60, 0.12);
            --shadow-nav: 0 2px 16px rgba(26, 43, 60, 0.06);
            --transition: 0.25s ease;
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --section-pad-desktop: 88px 0;
            --section-pad-mobile: 56px 0;
            --nav-height: 68px;
            --container-max: 1200px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-body);
            background-color: var(--bg-white);
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition), border-color var(--transition), background-color var(--transition), box-shadow var(--transition), transform var(--transition);
        }

        a:hover {
            color: var(--accent);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-pad {
            padding: var(--section-pad-desktop);
        }

        .section-alt {
            background-color: var(--bg-alt);
        }

        .section-title {
            font-size: 30px;
            line-height: 1.35;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }

        .section-subtitle {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-muted);
            max-width: 720px;
            margin-bottom: 40px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 14px;
        }

        .section-tag i {
            font-size: 12px;
        }

        /* ============ Header / Nav ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 999;
            background-color: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            box-shadow: 0 1px 0 var(--border);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-nav);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            min-width: 160px;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 17px;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .logo-text span {
            color: var(--primary);
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 30px;
            flex: 1;
            justify-content: center;
        }

        .header-nav a {
            font-size: 14px;
            color: var(--text-body);
            font-weight: 500;
            position: relative;
            padding: 6px 0;
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .header-nav a::after {
            content: "";
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
            transition: width var(--transition);
        }

        .header-nav a:hover {
            color: var(--primary);
        }

        .header-nav a:hover::after,
        .header-nav a.active::after {
            width: 100%;
        }

        .header-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .header-search {
            display: flex;
            align-items: center;
            gap: 6px;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            padding: 6px 12px;
            height: 36px;
            background-color: var(--bg-white);
            transition: border-color var(--transition), box-shadow var(--transition);
            width: 160px;
        }

        .header-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 2px rgba(46, 109, 164, 0.15);
        }

        .header-search input {
            border: none;
            outline: none;
            font-size: 13px;
            color: var(--text-body);
            background: transparent;
            width: 100%;
            font-family: var(--font-stack);
            padding: 0;
        }

        .header-search input::placeholder {
            color: var(--text-muted);
            font-size: 12px;
        }

        .header-search .kbd {
            font-size: 11px;
            color: var(--text-muted);
            background: var(--bg-alt);
            border: 1px solid var(--border);
            border-radius: 3px;
            padding: 1px 5px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .header-icon-btn {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1px solid var(--border);
            background: transparent;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 14px;
            cursor: pointer;
            transition: all var(--transition);
            flex-shrink: 0;
        }

        .header-icon-btn:hover {
            background: var(--bg-alt);
            border-color: var(--primary);
            color: var(--primary);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            background-color: var(--primary);
            color: #fff;
            border: 1px solid var(--primary);
            border-radius: var(--radius-btn);
            padding: 10px 20px;
            font-size: 14px;
            font-weight: 600;
            font-family: var(--font-stack);
            cursor: pointer;
            transition: all var(--transition);
            line-height: 1.4;
            white-space: nowrap;
        }

        .btn-primary:hover {
            background-color: var(--primary-dark);
            color: #fff;
            box-shadow: 0 4px 12px rgba(46, 109, 164, 0.3);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: scale(0.97);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
            border-radius: var(--radius-btn);
            padding: 10px 20px;
            font-size: 14px;
            font-weight: 600;
            font-family: var(--font-stack);
            cursor: pointer;
            transition: all var(--transition);
            line-height: 1.4;
            white-space: nowrap;
        }

        .btn-outline:hover {
            background-color: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
        }

        .btn-outline:active {
            transform: scale(0.97);
        }

        .btn-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            color: var(--primary);
            font-size: 14px;
            font-weight: 500;
            text-decoration: underline;
            text-underline-offset: 3px;
            transition: color var(--transition);
            background: none;
            border: none;
            cursor: pointer;
            font-family: var(--font-stack);
            padding: 0;
        }

        .btn-link:hover {
            color: var(--accent);
        }

        .hamburger-btn {
            display: none;
            width: 40px;
            height: 40px;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            background: transparent;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 3px;
            flex-shrink: 0;
            transition: all var(--transition);
        }

        .hamburger-btn span {
            display: block;
            width: 20px;
            height: 2px;
            background-color: var(--text-heading);
            border-radius: 2px;
            transition: all var(--transition);
        }

        .hamburger-btn:hover {
            background: var(--bg-alt);
            border-color: var(--primary);
        }

        .mobile-nav {
            display: none;
            position: absolute;
            top: var(--nav-height);
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-nav);
            padding: 16px 20px;
            z-index: 998;
        }

        .mobile-nav.open {
            display: block;
        }

        .mobile-nav a {
            display: block;
            padding: 12px 0;
            font-size: 15px;
            color: var(--text-body);
            border-bottom: 1px solid var(--border);
            transition: color var(--transition);
        }

        .mobile-nav a:last-child {
            border-bottom: none;
        }

        .mobile-nav a:hover,
        .mobile-nav a.active {
            color: var(--primary);
        }

        /* ============ Breadcrumb ============ */
        .breadcrumb-wrap {
            background-color: var(--bg-alt);
            border-bottom: 1px solid var(--border);
            padding: 12px 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-muted);
            transition: color var(--transition);
        }

        .breadcrumb a:hover {
            color: var(--primary);
        }

        .breadcrumb .sep {
            color: var(--silver);
            font-size: 11px;
        }

        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* ============ Hero (Case Page) ============ */
        .hero-case {
            position: relative;
            background-image: linear-gradient(135deg, rgba(26, 43, 60, 0.88) 0%, rgba(46, 109, 164, 0.65) 60%, rgba(232, 240, 247, 0.3) 100%), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            color: #fff;
            padding: 72px 0 80px;
            min-height: 380px;
            display: flex;
            align-items: center;
        }

        .hero-case .container {
            width: 100%;
        }

        .hero-case h1 {
            font-size: 46px;
            line-height: 1.25;
            font-weight: 700;
            margin: 0 0 16px;
            color: #fff;
            letter-spacing: 0.02em;
        }

        .hero-case .hero-subtitle {
            font-size: 17px;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.88);
            max-width: 620px;
            margin-bottom: 28px;
        }

        .hero-case .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .hero-case .btn-hero-light {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #fff;
            color: var(--primary-dark);
            border: 1px solid #fff;
            border-radius: var(--radius-btn);
            padding: 12px 24px;
            font-size: 15px;
            font-weight: 600;
            font-family: var(--font-stack);
            cursor: pointer;
            transition: all var(--transition);
            line-height: 1.4;
        }

        .hero-case .btn-hero-light:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(255, 255, 255, 0.2);
        }

        .hero-case .btn-hero-outline {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.7);
            border-radius: var(--radius-btn);
            padding: 12px 24px;
            font-size: 15px;
            font-weight: 600;
            font-family: var(--font-stack);
            cursor: pointer;
            transition: all var(--transition);
            line-height: 1.4;
        }

        .hero-case .btn-hero-outline:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

        /* ============ Case Cards ============ */
        .case-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: box-shadow var(--transition), transform var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .case-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .case-card .case-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/10;
            background-color: var(--bg-alt);
        }

        .case-card .case-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .case-card:hover .case-img img {
            transform: scale(1.05);
        }

        .case-card .case-body {
            padding: 22px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .case-card .case-tags {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
            margin-bottom: 12px;
        }

        .case-tag {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            letter-spacing: 0.04em;
            padding: 3px 10px;
            border-radius: var(--radius-badge);
            background: var(--primary-light);
            color: var(--primary);
            transition: all var(--transition);
        }

        .case-tag.accent-tag {
            background: var(--accent-light);
            color: #8B6914;
        }

        .case-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-heading);
            margin: 0 0 10px;
            line-height: 1.45;
        }

        .case-card p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-body);
            margin-bottom: 14px;
            flex: 1;
        }

        .case-card .case-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
            transition: color var(--transition);
        }

        .case-card .case-link:hover {
            color: var(--accent);
        }

        /* Horizontal large case card */
        .case-card-horizontal {
            display: flex;
            flex-direction: column;
            background: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: box-shadow var(--transition), transform var(--transition);
            height: 100%;
        }

        .case-card-horizontal:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .case-card-horizontal .case-img-h {
            aspect-ratio: 16/8;
            overflow: hidden;
            background-color: var(--bg-alt);
            position: relative;
        }

        .case-card-horizontal .case-img-h img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .case-card-horizontal:hover .case-img-h img {
            transform: scale(1.04);
        }

        .case-card-horizontal .case-body-h {
            padding: 24px 26px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .case-card-horizontal h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-heading);
            margin: 0 0 10px;
            line-height: 1.4;
        }

        .case-card-horizontal p {
            font-size: 15px;
            line-height: 1.85;
            color: var(--text-body);
            margin-bottom: 16px;
        }

        /* ============ Stats ============ */
        .stats-section {
            background: var(--primary-deeper);
            color: #fff;
            padding: 72px 0;
        }

        .stats-section .section-title {
            color: #fff;
        }

        .stats-section .section-subtitle {
            color: rgba(255, 255, 255, 0.75);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr 0.8fr;
            gap: 36px;
            margin-top: 16px;
        }

        .stat-item {
            text-align: left;
        }

        .stat-item .stat-number {
            font-size: 44px;
            font-weight: 700;
            line-height: 1.1;
            color: var(--accent);
            letter-spacing: 0.02em;
            margin-bottom: 8px;
        }

        .stat-item .stat-number .suffix {
            font-size: 28px;
            font-weight: 600;
        }

        .stat-item .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.7;
        }

        /* ============ Deep Case Sections ============ */
        .deep-case {
            display: flex;
            flex-direction: column;
            gap: 32px;
            background: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            margin-bottom: 32px;
        }

        .deep-case .deep-img {
            aspect-ratio: 16/9;
            overflow: hidden;
            background-color: var(--bg-alt);
        }

        .deep-case .deep-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .deep-case:hover .deep-img img {
            transform: scale(1.03);
        }

        .deep-case .deep-content {
            padding: 28px 30px;
        }

        .deep-case .deep-number {
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .deep-case .deep-number i {
            font-size: 11px;
            color: var(--accent);
        }

        .deep-case h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-heading);
            margin: 0 0 14px;
            line-height: 1.4;
        }

        .deep-case p {
            font-size: 15px;
            line-height: 1.9;
            color: var(--text-body);
            margin-bottom: 14px;
        }

        .deep-case .deep-points {
            list-style: none;
            margin: 0 0 16px;
            padding: 0;
        }

        .deep-case .deep-points li {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-body);
            padding-left: 20px;
            position: relative;
            margin-bottom: 6px;
        }

        .deep-case .deep-points li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 12px;
            width: 8px;
            height: 8px;
            background: var(--accent);
            border-radius: 50%;
        }

        /* ============ Testimonial ============ */
        .testimonial-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 28px 30px;
            height: 100%;
            border-left: 4px solid var(--accent);
            transition: box-shadow var(--transition), transform var(--transition);
        }

        .testimonial-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .testimonial-card .quote-icon {
            font-size: 20px;
            color: var(--accent);
            margin-bottom: 12px;
        }

        .testimonial-card .quote-text {
            font-size: 15px;
            line-height: 1.9;
            color: var(--text-body);
            margin-bottom: 16px;
            font-style: italic;
        }

        .testimonial-card .quote-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .testimonial-card .quote-author .avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-weight: 700;
            font-size: 16px;
            flex-shrink: 0;
        }

        .testimonial-card .quote-author .author-info {
            display: flex;
            flex-direction: column;
        }

        .testimonial-card .quote-author .author-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-heading);
        }

        .testimonial-card .quote-author .author-title {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* ============ Process ============ */
        .process-grid {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr 1fr;
            gap: 24px;
            counter-reset: process;
        }

        .process-step {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 28px 24px;
            text-align: left;
            position: relative;
            transition: box-shadow var(--transition), transform var(--transition);
            border-top: 3px solid var(--primary);
        }

        .process-step:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .process-step .step-number {
            font-size: 14px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.06em;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .process-step h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-heading);
            margin: 0 0 10px;
            line-height: 1.45;
        }

        .process-step p {
            font-size: 13px;
            line-height: 1.8;
            color: var(--text-muted);
            margin: 0;
        }

        /* ============ FAQ ============ */
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: 8px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .faq-item:hover {
            border-color: var(--primary-light);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 16px 20px;
            cursor: pointer;
            background: var(--primary-light);
            border: none;
            width: 100%;
            text-align: left;
            font-family: var(--font-stack);
            font-size: 15px;
            font-weight: 700;
            color: var(--text-heading);
            transition: background-color var(--transition);
            user-select: none;
        }

        .faq-question:hover {
            background: #D6E4F0;
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            color: var(--primary);
            font-size: 14px;
            transition: transform var(--transition);
        }

        .faq-item.open .faq-icon {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            background: var(--bg-white);
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
        }

        .faq-answer p {
            padding: 16px 20px;
            font-size: 14px;
            line-height: 1.9;
            color: var(--text-body);
            margin: 0;
            border-top: 1px solid var(--border);
        }

        /* ============ CTA ============ */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 50%, var(--primary-deeper) 100%);
            color: #fff;
            text-align: center;
            padding: 72px 0;
        }

        .cta-section h2 {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            line-height: 1.4;
        }

        .cta-section p {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 28px;
        }

        .cta-section .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-cta-light {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #fff;
            color: var(--primary-dark);
            border: 1px solid #fff;
            border-radius: var(--radius-btn);
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            font-family: var(--font-stack);
            cursor: pointer;
            transition: all var(--transition);
            line-height: 1.4;
        }

        .btn-cta-light:hover {
            background: var(--accent-light);
            color: var(--primary-deeper);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(255, 255, 255, 0.2);
        }

        .btn-cta-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.7);
            border-radius: var(--radius-btn);
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            font-family: var(--font-stack);
            cursor: pointer;
            transition: all var(--transition);
            line-height: 1.4;
        }

        .btn-cta-outline-light:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

        /* ============ Footer ============ */
        .site-footer {
            background: var(--text-heading);
            color: rgba(255, 255, 255, 0.78);
            padding: 48px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-col .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }

        .footer-col .footer-logo .logo-icon {
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: 7px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 15px;
        }

        .footer-col .footer-logo .logo-text {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.02em;
        }

        .footer-col .footer-logo .logo-text span {
            color: var(--accent);
        }

        .footer-col p {
            font-size: 13px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 0;
        }

        .footer-col h4 {
            font-size: 13px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.08em;
            margin-bottom: 14px;
            text-transform: uppercase;
        }

        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--accent);
        }

        .footer-col .footer-contact p {
            font-size: 13px;
            margin-bottom: 6px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 18px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom > span {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-legal {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        .footer-legal span {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-legal a {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition);
        }

        .footer-legal a:hover {
            color: var(--accent);
        }

        /* ============ Responsive ============ */
        @media (max-width: 1023px) {
            .header-nav {
                gap: 18px;
            }

            .header-nav a {
                font-size: 13px;
            }

            .header-search {
                width: 120px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }

            .case-card .case-body {
                padding: 18px;
            }

            .process-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .header-nav {
                display: none;
            }

            .hamburger-btn {
                display: flex;
            }

            .hero-case {
                padding: 48px 0 56px;
                min-height: 300px;
            }

            .hero-case h1 {
                font-size: 32px;
            }

            .hero-case .hero-subtitle {
                font-size: 15px;
            }

            .section-pad {
                padding: var(--section-pad-mobile);
            }

            .section-title {
                font-size: 24px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }

            .stat-item .stat-number {
                font-size: 34px;
            }

            .process-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .footer-legal {
                justify-content: center;
            }

            .deep-case .deep-content {
                padding: 20px;
            }

            .deep-case h3 {
                font-size: 20px;
            }

            .btn-primary,
            .btn-outline {
                padding: 10px 18px;
                font-size: 13px;
            }

            .header-actions {
                gap: 6px;
            }

            .header-search {
                width: 100px;
            }

            .case-card-horizontal .case-img-h {
                aspect-ratio: 16/9;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }

            .hero-case h1 {
                font-size: 28px;
            }

            .hero-case .hero-actions {
                flex-direction: column;
            }

            .hero-case .btn-hero-light,
            .hero-case .btn-hero-outline {
                width: 100%;
                justify-content: center;
            }

            .stats-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .stat-item .stat-number {
                font-size: 30px;
            }

            .cta-section h2 {
                font-size: 24px;
            }

            .cta-section .cta-actions {
                flex-direction: column;
            }

            .btn-cta-light,
            .btn-cta-outline-light {
                width: 100%;
                justify-content: center;
            }

            .header-search {
                display: none;
            }

            .header-logo {
                min-width: auto;
            }

            .logo-text {
                font-size: 16px;
            }
        }

/* roulang page: category4 */
:root {
        --primary: #2E6DA4;
        --primary-dark: #245A8A;
        --primary-deeper: #1D4A72;
        --primary-light: #E8F0F7;
        --accent: #C9A227;
        --accent-light: #F5EDD6;
        --silver: #8C9BA8;
        --bg-white: #FFFFFF;
        --bg-alt: #F5F8FB;
        --text-heading: #1A2B3C;
        --text-body: #3C4A56;
        --text-muted: #6B7A86;
        --border: #DBE4EC;
        --radius-card: 10px;
        --radius-btn: 6px;
        --radius-input: 6px;
        --radius-badge: 4px;
        --shadow-card: 0 2px 12px rgba(26, 43, 60, 0.08);
        --shadow-hover: 0 6px 18px rgba(26, 43, 60, 0.12);
        --shadow-nav: 0 2px 16px rgba(26, 43, 60, 0.06);
        --transition: 0.25s ease;
        --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
        --section-pad-desktop: 88px 0;
        --section-pad-mobile: 56px 0;
        --nav-height: 68px;
        --container-max: 1200px;
    }

    * {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }

    html {
        scroll-behavior: smooth;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }

    body {
        font-family: var(--font-stack);
        font-size: 16px;
        line-height: 1.85;
        color: var(--text-body);
        background-color: var(--bg-white);
        overflow-x: hidden;
    }

    img {
        max-width: 100%;
        height: auto;
        display: block;
    }

    a {
        color: var(--primary);
        text-decoration: none;
        transition: color var(--transition), border-color var(--transition), background-color var(--transition), box-shadow var(--transition), transform var(--transition);
    }

    a:hover {
        color: var(--accent);
    }

    a:focus-visible,
    button:focus-visible,
    input:focus-visible,
    textarea:focus-visible {
        outline: 2px solid var(--primary);
        outline-offset: 2px;
    }

    .container {
        max-width: var(--container-max);
        margin: 0 auto;
        padding: 0 24px;
    }

    .section-pad {
        padding: var(--section-pad-desktop);
    }

    .section-alt {
        background-color: var(--bg-alt);
    }

    .section-title {
        font-size: 30px;
        line-height: 1.35;
        font-weight: 700;
        color: var(--text-heading);
        margin-bottom: 16px;
        letter-spacing: 0.01em;
    }

    .section-subtitle {
        font-size: 16px;
        line-height: 1.9;
        color: var(--text-muted);
        max-width: 720px;
        margin-bottom: 40px;
    }

    .section-tag {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        font-weight: 600;
        letter-spacing: 0.06em;
        color: var(--primary);
        background-color: var(--primary-light);
        padding: 6px 16px;
        border-radius: 999px;
        margin-bottom: 14px;
    }

    .section-tag i {
        font-size: 12px;
    }

    /* ============ Header / Nav ============ */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 999;
        background-color: rgba(255, 255, 255, 0.97);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--border);
        height: var(--nav-height);
        display: flex;
        align-items: center;
        box-shadow: 0 1px 0 var(--border);
        transition: box-shadow var(--transition);
    }

    .site-header.scrolled {
        box-shadow: var(--shadow-nav);
    }

    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 20px;
        width: 100%;
    }

    .header-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        flex-shrink: 0;
        min-width: 160px;
    }

    .logo-icon {
        width: 38px;
        height: 38px;
        background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
        border-radius: 8px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-size: 17px;
        flex-shrink: 0;
    }

    .logo-text {
        font-size: 18px;
        font-weight: 700;
        color: var(--text-heading);
        letter-spacing: 0.02em;
        white-space: nowrap;
    }

    .logo-text span {
        color: var(--primary);
    }

    .header-nav {
        display: flex;
        align-items: center;
        gap: 26px;
        flex: 1;
        justify-content: center;
    }

    .header-nav a {
        font-size: 14px;
        color: var(--text-body);
        font-weight: 500;
        position: relative;
        padding: 6px 0;
        white-space: nowrap;
        letter-spacing: 0.01em;
    }

    .header-nav a::after {
        content: "";
        position: absolute;
        bottom: -2px;
        left: 50%;
        transform: translateX(-50%);
        width: 0;
        height: 2px;
        background-color: var(--primary);
        border-radius: 2px;
        transition: width var(--transition);
    }

    .header-nav a:hover {
        color: var(--primary);
    }

    .header-nav a:hover::after {
        width: 100%;
    }

    .header-nav a.active {
        color: var(--primary);
        font-weight: 600;
    }

    .header-nav a.active::after {
        width: 100%;
    }

    .header-actions {
        display: flex;
        align-items: center;
        gap: 12px;
        flex-shrink: 0;
    }

    .header-search {
        display: flex;
        align-items: center;
        gap: 8px;
        background-color: var(--bg-white);
        border: 1px solid var(--border);
        border-radius: var(--radius-input);
        padding: 6px 16px;
        width: 200px;
        transition: border-color var(--transition), box-shadow var(--transition);
    }

    .header-search:focus-within {
        border-color: var(--primary);
        box-shadow: 0 0 0 2px rgba(46, 109, 164, 0.15);
    }

    .header-search i {
        font-size: 13px;
        color: var(--silver);
    }

    .header-search input {
        border: none;
        outline: none;
        background: transparent;
        font-size: 13px;
        color: var(--text-body);
        flex: 1;
        min-width: 0;
        font-family: var(--font-stack);
    }

    .header-search input::placeholder {
        color: var(--silver);
    }

    .header-search .kbd-hint {
        font-size: 11px;
        color: var(--silver);
        border: 1px solid var(--border);
        border-radius: 4px;
        padding: 1px 6px;
        white-space: nowrap;
        background-color: var(--bg-alt);
    }

    .header-cta {
        background-color: var(--primary);
        color: #fff;
        border: 1px solid var(--primary);
        padding: 8px 20px;
        border-radius: var(--radius-btn);
        font-size: 14px;
        font-weight: 600;
        cursor: pointer;
        white-space: nowrap;
        transition: background-color var(--transition), box-shadow var(--transition), transform var(--transition);
        font-family: var(--font-stack);
        line-height: 1.5;
    }

    .header-cta:hover {
        background-color: var(--primary-dark);
        border-color: var(--primary-dark);
        box-shadow: 0 4px 12px rgba(46, 109, 164, 0.3);
        color: #fff;
    }

    .header-cta:active {
        transform: scale(0.97);
    }

    .nav-toggle {
        display: none;
        background: none;
        border: none;
        font-size: 22px;
        color: var(--text-heading);
        cursor: pointer;
        padding: 4px;
    }

    /* ============ Hero 分类页 ============ */
    .page-hero {
        position: relative;
        background-size: cover;
        background-position: center;
        min-height: 340px;
        display: flex;
        align-items: center;
        justify-content: center;
        text-align: center;
        overflow: hidden;
    }

    .page-hero::before {
        content: "";
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, rgba(255, 255, 255, 0.85) 0%, rgba(232, 240, 247, 0.92) 60%, rgba(255, 255, 255, 0.97) 100%);
        z-index: 1;
    }

    .page-hero .container {
        position: relative;
        z-index: 2;
    }

    .breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        justify-content: center;
        font-size: 13px;
        color: var(--text-muted);
        margin-bottom: 20px;
        flex-wrap: wrap;
    }

    .breadcrumb a {
        color: var(--primary);
    }

    .breadcrumb a:hover {
        color: var(--accent);
    }

    .breadcrumb .sep {
        color: var(--silver);
        font-size: 11px;
    }

    .page-hero h1 {
        font-size: 44px;
        line-height: 1.25;
        font-weight: 700;
        color: var(--text-heading);
        margin-bottom: 16px;
        letter-spacing: 0.01em;
    }

    .page-hero .hero-subtitle {
        font-size: 17px;
        color: var(--text-body);
        max-width: 720px;
        margin: 0 auto;
        line-height: 1.9;
    }

    /* ============ 品牌故事 正文样式 ============ */
    .brand-article {
        max-width: 860px;
        margin: 0 auto;
    }

    .brand-article .article-section {
        margin-bottom: 56px;
    }

    .brand-article .article-section:last-child {
        margin-bottom: 0;
    }

    .brand-article h2 {
        font-size: 26px;
        line-height: 1.4;
        font-weight: 700;
        color: var(--text-heading);
        margin-bottom: 18px;
        letter-spacing: 0.01em;
    }

    .brand-article h3 {
        font-size: 20px;
        line-height: 1.45;
        font-weight: 700;
        color: var(--text-heading);
        margin-bottom: 12px;
    }

    .brand-article p {
        font-size: 16px;
        line-height: 2.0;
        color: var(--text-body);
        margin-bottom: 16px;
    }

    .brand-article .article-image-wrap {
        margin: 28px 0;
        border-radius: var(--radius-card);
        overflow: hidden;
        box-shadow: var(--shadow-card);
        transition: box-shadow var(--transition);
    }

    .brand-article .article-image-wrap:hover {
        box-shadow: var(--shadow-hover);
    }

    .brand-article .article-image-wrap img {
        width: 100%;
        aspect-ratio: 16 / 9;
        object-fit: cover;
    }

    .brand-article .article-image-caption {
        font-size: 13px;
        color: var(--text-muted);
        padding: 10px 16px;
        background-color: var(--bg-alt);
        border-top: 1px solid var(--border);
    }

    .brand-article .article-list {
        list-style: none;
        padding: 0;
        margin: 16px 0 20px;
    }

    .brand-article .article-list li {
        position: relative;
        padding-left: 24px;
        margin-bottom: 10px;
        font-size: 15px;
        line-height: 1.85;
        color: var(--text-body);
    }

    .brand-article .article-list li::before {
        content: "";
        position: absolute;
        left: 0;
        top: 10px;
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background-color: var(--primary);
        border: 2px solid var(--primary-light);
    }

    /* ============ 时间线 ============ */
    .timeline-section {
        position: relative;
        padding-left: 40px;
    }

    .timeline-section::before {
        content: "";
        position: absolute;
        left: 14px;
        top: 6px;
        bottom: 6px;
        width: 2px;
        background: linear-gradient(180deg, var(--primary) 0%, var(--primary-light) 70%, transparent 100%);
        border-radius: 2px;
    }

    .timeline-item {
        position: relative;
        margin-bottom: 36px;
    }

    .timeline-item:last-child {
        margin-bottom: 0;
    }

    .timeline-item::before {
        content: "";
        position: absolute;
        left: -32px;
        top: 6px;
        width: 14px;
        height: 14px;
        border-radius: 50%;
        background-color: var(--primary);
        border: 3px solid var(--primary-light);
        box-shadow: 0 0 0 3px #fff, 0 2px 8px rgba(46, 109, 164, 0.25);
    }

    .timeline-year {
        font-size: 15px;
        font-weight: 700;
        color: var(--primary);
        letter-spacing: 0.04em;
        margin-bottom: 4px;
        display: inline-block;
        background-color: var(--primary-light);
        padding: 2px 14px;
        border-radius: 999px;
    }

    .timeline-item h3 {
        font-size: 18px;
        font-weight: 700;
        color: var(--text-heading);
        margin: 8px 0 6px;
    }

    .timeline-item p {
        font-size: 15px;
        line-height: 1.85;
        color: var(--text-body);
        margin-bottom: 0;
    }

    /* ============ 数据指标 ============ */
    .brand-stats {
        display: flex;
        flex-wrap: wrap;
        gap: 32px 48px;
        margin-top: 28px;
    }

    .brand-stat {
        flex: 1;
        min-width: 160px;
    }

    .brand-stat .stat-number {
        font-size: 42px;
        font-weight: 700;
        color: var(--primary);
        line-height: 1.2;
        letter-spacing: 0.02em;
    }

    .brand-stat .stat-number .stat-unit {
        font-size: 18px;
        font-weight: 600;
        color: var(--accent);
        margin-left: 4px;
    }

    .brand-stat .stat-label {
        font-size: 14px;
        color: var(--text-muted);
        margin-top: 4px;
    }

    /* ============ FAQ ============ */
    .faq-list {
        max-width: 860px;
        margin: 0 auto;
    }

    .faq-item {
        border: 1px solid var(--border);
        border-radius: 8px;
        margin-bottom: 12px;
        overflow: hidden;
        background-color: var(--bg-white);
        transition: box-shadow var(--transition);
    }

    .faq-item:hover {
        box-shadow: var(--shadow-card);
    }

    .faq-question {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        padding: 18px 24px;
        background-color: var(--primary-light);
        border: none;
        width: 100%;
        text-align: left;
        font-size: 16px;
        font-weight: 700;
        color: var(--text-heading);
        cursor: pointer;
        transition: background-color var(--transition);
        font-family: var(--font-stack);
        line-height: 1.6;
    }

    .faq-question:hover {
        background-color: #d8e4f0;
    }

    .faq-question .faq-arrow {
        flex-shrink: 0;
        font-size: 14px;
        color: var(--primary);
        transition: transform 0.3s ease;
    }

    .faq-item.open .faq-question .faq-arrow {
        transform: rotate(180deg);
    }

    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s ease, padding 0.3s ease;
        background-color: var(--bg-white);
    }

    .faq-item.open .faq-answer {
        max-height: 300px;
        padding: 20px 24px;
        border-top: 1px solid var(--border);
    }

    .faq-answer p {
        font-size: 15px;
        line-height: 1.9;
        color: var(--text-body);
        margin: 0;
    }

    /* ============ CTA ============ */
    .cta-section {
        background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 60%, var(--primary-deeper) 100%);
        color: #fff;
        text-align: center;
        padding: 72px 24px;
        border-radius: 0;
    }

    .cta-section h2 {
        font-size: 32px;
        line-height: 1.4;
        font-weight: 700;
        margin-bottom: 16px;
        color: #fff;
    }

    .cta-section p {
        font-size: 16px;
        line-height: 1.9;
        max-width: 640px;
        margin: 0 auto 32px;
        color: rgba(255, 255, 255, 0.85);
    }

    .cta-buttons {
        display: flex;
        align-items: center;
        gap: 16px;
        justify-content: center;
        flex-wrap: wrap;
    }

    .cta-btn-primary {
        background-color: #fff;
        color: var(--primary);
        border: 2px solid #fff;
        padding: 12px 32px;
        border-radius: var(--radius-btn);
        font-size: 16px;
        font-weight: 700;
        cursor: pointer;
        transition: background-color var(--transition), color var(--transition), box-shadow var(--transition), transform var(--transition);
        font-family: var(--font-stack);
        line-height: 1.5;
        display: inline-flex;
        align-items: center;
        gap: 8px;
    }

    .cta-btn-primary:hover {
        background-color: var(--accent-light);
        border-color: var(--accent-light);
        color: var(--primary-deeper);
        box-shadow: 0 6px 18px rgba(0, 0, 0, 0.2);
    }

    .cta-btn-primary:active {
        transform: scale(0.97);
    }

    .cta-btn-outline {
        background: transparent;
        color: #fff;
        border: 2px solid rgba(255, 255, 255, 0.6);
        padding: 12px 32px;
        border-radius: var(--radius-btn);
        font-size: 16px;
        font-weight: 600;
        cursor: pointer;
        transition: border-color var(--transition), background-color var(--transition), color var(--transition), transform var(--transition);
        font-family: var(--font-stack);
        line-height: 1.5;
        display: inline-flex;
        align-items: center;
        gap: 8px;
    }

    .cta-btn-outline:hover {
        border-color: #fff;
        background-color: rgba(255, 255, 255, 0.1);
        color: #fff;
    }

    .cta-btn-outline:active {
        transform: scale(0.97);
    }

    /* ============ Footer ============ */
    .site-footer {
        background-color: #1A2B3C;
        color: #fff;
        padding: 64px 0 28px;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1.2fr;
        gap: 40px;
        margin-bottom: 40px;
    }

    .footer-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        margin-bottom: 16px;
    }

    .footer-logo .logo-icon {
        width: 36px;
        height: 36px;
        border-radius: 7px;
        font-size: 15px;
    }

    .footer-logo .logo-text {
        font-size: 18px;
        color: #fff;
    }

    .footer-logo .logo-text span {
        color: #6DA8D4;
    }

    .footer-col p {
        font-size: 14px;
        line-height: 1.9;
        color: rgba(255, 255, 255, 0.7);
        margin-bottom: 8px;
    }

    .footer-col h4 {
        font-size: 14px;
        font-weight: 700;
        color: #fff;
        margin-bottom: 16px;
        letter-spacing: 0.04em;
    }

    .footer-col ul {
        list-style: none;
        padding: 0;
        margin: 0;
    }

    .footer-col ul li {
        margin-bottom: 8px;
    }

    .footer-col ul li a {
        font-size: 14px;
        color: rgba(255, 255, 255, 0.65);
        transition: color var(--transition);
    }

    .footer-col ul li a:hover {
        color: #C9A227;
    }

    .footer-bottom {
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 12px;
        border-top: 1px solid rgba(255, 255, 255, 0.15);
        padding-top: 24px;
        font-size: 13px;
        color: rgba(255, 255, 255, 0.55);
    }

    .footer-legal {
        display: flex;
        align-items: center;
        gap: 20px;
        flex-wrap: wrap;
    }

    .footer-legal a {
        font-size: 13px;
        color: rgba(255, 255, 255, 0.55);
        transition: color var(--transition);
    }

    .footer-legal a:hover {
        color: #C9A227;
    }

    /* ============ 响应式 ============ */
    @media (max-width: 1024px) {
        .header-nav {
            gap: 18px;
        }
        .header-nav a {
            font-size: 13px;
        }
        .header-search {
            width: 160px;
        }
        .page-hero h1 {
            font-size: 36px;
        }
    }

    @media (max-width: 860px) {
        .header-nav {
            display: none;
            position: absolute;
            top: var(--nav-height);
            left: 0;
            right: 0;
            background-color: #fff;
            flex-direction: column;
            align-items: flex-start;
            gap: 0;
            padding: 12px 24px;
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-nav);
            z-index: 1000;
        }
        .header-nav.open {
            display: flex;
        }
        .header-nav a {
            width: 100%;
            padding: 10px 0;
            font-size: 15px;
            border-bottom: 1px solid var(--border);
        }
        .header-nav a:last-child {
            border-bottom: none;
        }
        .header-nav a::after {
            display: none;
        }
        .nav-toggle {
            display: block;
        }
        .header-search {
            display: none;
        }
        .header-cta {
            padding: 6px 14px;
            font-size: 13px;
        }
        .header-logo {
            min-width: auto;
        }
        .header-inner {
            gap: 10px;
        }
    }

    @media (max-width: 768px) {
        :root {
            --section-pad-desktop: 56px 0;
            --section-pad-mobile: 40px 0;
        }
        .page-hero {
            min-height: 240px;
        }
        .page-hero h1 {
            font-size: 28px;
        }
        .page-hero .hero-subtitle {
            font-size: 15px;
        }
        .section-title {
            font-size: 24px;
        }
        .brand-article h2 {
            font-size: 22px;
        }
        .brand-article h3 {
            font-size: 18px;
        }
        .brand-article p {
            font-size: 15px;
        }
        .brand-stats {
            gap: 24px 32px;
        }
        .brand-stat .stat-number {
            font-size: 32px;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 24px;
        }
        .footer-bottom {
            flex-direction: column;
            text-align: center;
        }
        .footer-legal {
            justify-content: center;
        }
        .timeline-section {
            padding-left: 32px;
        }
        .timeline-section::before {
            left: 10px;
        }
        .timeline-item::before {
            left: -28px;
            width: 10px;
            height: 10px;
        }
    }

    @media (max-width: 520px) {
        .page-hero {
            min-height: 200px;
        }
        .page-hero h1 {
            font-size: 24px;
        }
        .header-cta {
            padding: 5px 10px;
            font-size: 12px;
        }
        .logo-text {
            font-size: 15px;
        }
        .logo-icon {
            width: 32px;
            height: 32px;
            font-size: 14px;
        }
        .header-logo {
            gap: 6px;
        }
        .section-title {
            font-size: 21px;
        }
        .brand-article h2 {
            font-size: 19px;
        }
        .brand-article h3 {
            font-size: 16px;
        }
        .brand-article p {
            font-size: 14px;
            line-height: 1.85;
        }
        .brand-stat .stat-number {
            font-size: 26px;
        }
        .brand-stat .stat-number .stat-unit {
            font-size: 14px;
        }
        .faq-question {
            font-size: 14px;
            padding: 14px 16px;
        }
        .faq-item.open .faq-answer {
            padding: 14px 16px;
        }
    }

/* roulang page: category1 */
/* ============ 设计变量 ============ */
        :root {
            --primary: #2E6DA4;
            --primary-dark: #245A8A;
            --primary-deeper: #1D4A72;
            --primary-light: #E8F0F7;
            --accent: #C9A227;
            --accent-light: #F5EDD6;
            --silver: #8C9BA8;
            --bg-white: #FFFFFF;
            --bg-alt: #F5F8FB;
            --text-heading: #1A2B3C;
            --text-body: #3C4A56;
            --text-muted: #6B7A86;
            --border: #DBE4EC;
            --radius-card: 10px;
            --radius-btn: 6px;
            --radius-input: 6px;
            --radius-badge: 4px;
            --shadow-card: 0 2px 12px rgba(26, 43, 60, 0.08);
            --shadow-hover: 0 6px 18px rgba(26, 43, 60, 0.12);
            --shadow-nav: 0 2px 16px rgba(26, 43, 60, 0.06);
            --transition: 0.25s ease;
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --section-pad-desktop: 88px 0;
            --section-pad-mobile: 56px 0;
            --nav-height: 68px;
            --container-max: 1200px;
        }

        /* ============ Reset & Base ============ */
        *, *::before, *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-body);
            background-color: var(--bg-white);
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition), border-color var(--transition), background-color var(--transition), box-shadow var(--transition), transform var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 2px;
        }
        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-stack);
            color: var(--text-heading);
            line-height: 1.35;
            margin-top: 0;
        }
        h1 {
            font-size: 42px;
            font-weight: 700;
            letter-spacing: 0.01em;
        }
        h2 {
            font-size: 30px;
            font-weight: 700;
            letter-spacing: 0.01em;
        }
        h3 {
            font-size: 22px;
            font-weight: 700;
        }
        h4 {
            font-size: 18px;
            font-weight: 600;
        }
        p {
            margin-top: 0;
            margin-bottom: 1rem;
        }
        ul, ol {
            padding-left: 1.5rem;
            margin-bottom: 1rem;
        }
        button, input, textarea, select {
            font-family: var(--font-stack);
        }

        /* ============ 容器 ============ */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-wide {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-pad {
            padding: var(--section-pad-desktop);
        }
        .section-alt {
            background-color: var(--bg-alt);
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 14px;
        }
        .section-tag i {
            font-size: 12px;
        }
        .section-title {
            font-size: 30px;
            line-height: 1.35;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }
        .section-subtitle {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-muted);
            max-width: 720px;
            margin-bottom: 40px;
        }

        /* ============ Header / Nav ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 999;
            background-color: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            box-shadow: 0 1px 0 var(--border);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-nav);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            min-width: 160px;
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 17px;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .logo-text span {
            color: var(--primary);
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            flex: 1;
            justify-content: center;
        }
        .header-nav a {
            font-size: 14px;
            color: var(--text-body);
            font-weight: 500;
            position: relative;
            padding: 6px 0;
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .header-nav a::after {
            content: "";
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
            transition: width var(--transition);
        }
        .header-nav a:hover {
            color: var(--primary);
        }
        .header-nav a:hover::after,
        .header-nav a.active::after {
            width: 100%;
        }
        .header-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .header-search {
            display: flex;
            align-items: center;
            gap: 6px;
            background-color: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: 6px;
            padding: 6px 12px;
            min-width: 180px;
            cursor: text;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .header-search:hover {
            border-color: var(--primary);
        }
        .header-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 2px rgba(46, 109, 164, 0.15);
        }
        .header-search i {
            color: var(--silver);
            font-size: 13px;
        }
        .header-search input {
            border: none;
            outline: none;
            background: transparent;
            font-size: 13px;
            color: var(--text-body);
            width: 100%;
            padding: 2px 0;
        }
        .header-search input::placeholder {
            color: var(--silver);
        }
        .kbd-hint {
            font-size: 11px;
            color: var(--silver);
            background-color: var(--bg-alt);
            border: 1px solid var(--border);
            border-radius: 4px;
            padding: 2px 6px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .header-icon-btn {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1px solid var(--border);
            background: transparent;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            font-size: 14px;
            transition: all var(--transition);
        }
        .header-icon-btn:hover {
            background-color: var(--bg-alt);
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background-color: var(--primary);
            color: #fff;
            border: 1px solid var(--primary);
            border-radius: var(--radius-btn);
            padding: 10px 22px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: scale(0.97);
            background-color: var(--primary-deeper);
            border-color: var(--primary-deeper);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background-color: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
            border-radius: var(--radius-btn);
            padding: 10px 22px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-outline:hover {
            background-color: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-1px);
        }
        .btn-outline:active {
            transform: scale(0.97);
        }
        .btn-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background-color: #fff;
            color: var(--primary);
            border: 1px solid #fff;
            border-radius: var(--radius-btn);
            padding: 12px 24px;
            font-size: 15px;
            font-weight: 700;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-light:hover {
            background-color: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary-light);
            transform: translateY(-1px);
        }
        .btn-text-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            text-decoration: none;
            border-bottom: 1px solid currentColor;
            padding-bottom: 2px;
            transition: all var(--transition);
            cursor: pointer;
            background: none;
            border-top: none;
            border-left: none;
            border-right: none;
        }
        .btn-text-link:hover {
            color: var(--accent);
            border-bottom-color: var(--accent);
        }
        .btn-text-link i {
            font-size: 12px;
            transition: transform var(--transition);
        }
        .btn-text-link:hover i {
            transform: translateX(3px);
        }

        /* ============ 面包屑 ============ */
        .breadcrumb-bar {
            background-color: var(--bg-alt);
            border-bottom: 1px solid var(--border);
            padding: 12px 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .breadcrumb li + li::before {
            content: "/";
            color: var(--silver);
            font-size: 12px;
        }
        .breadcrumb a {
            color: var(--text-muted);
            text-decoration: none;
            transition: color var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* ============ Hero ============ */
        .hero-section {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            min-height: 320px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .hero-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(255,255,255,0.92) 0%, rgba(232,240,247,0.75) 55%, rgba(46,109,164,0.35) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            padding: 80px 0 70px;
        }
        .hero-content h1 {
            margin-bottom: 16px;
        }
        .hero-content p {
            font-size: 17px;
            color: var(--text-body);
            max-width: 640px;
            margin-bottom: 24px;
        }
        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        /* ============ 服务概览 ============ */
        .overview-block {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 48px;
            align-items: center;
        }
        .overview-text h2 {
            margin-bottom: 16px;
        }
        .overview-text p {
            margin-bottom: 16px;
            line-height: 1.95;
        }
        .overview-image {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .overview-image img {
            width: 100%;
            height: 340px;
            object-fit: cover;
            border-radius: var(--radius-card);
        }
        .overview-image::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, rgba(26,43,60,0.4), transparent);
            pointer-events: none;
        }

        /* ============ 服务列表（交替双栏图文） ============ */
        .service-item {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            padding: 32px 0;
            border-bottom: 1px solid var(--border);
        }
        .service-item:last-child {
            border-bottom: none;
        }
        .service-item.reverse .service-image {
            order: 2;
        }
        .service-item.reverse .service-text {
            order: 1;
        }
        .service-image {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
        }
        .service-image:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .service-image img {
            width: 100%;
            height: 280px;
            object-fit: cover;
            border-radius: var(--radius-card);
        }
        .service-image .service-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background-color: rgba(255,255,255,0.95);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: var(--radius-badge);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            z-index: 2;
            box-shadow: var(--shadow-card);
        }
        .service-text h3 {
            margin-bottom: 12px;
            font-size: 24px;
        }
        .service-text p {
            margin-bottom: 16px;
            line-height: 1.9;
            color: var(--text-body);
        }
        .service-text ul {
            margin-bottom: 16px;
            padding-left: 0;
            list-style: none;
        }
        .service-text ul li {
            padding-left: 26px;
            position: relative;
            margin-bottom: 8px;
            color: var(--text-body);
            font-size: 15px;
        }
        .service-text ul li::before {
            content: "\f058";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 2px;
            color: var(--primary);
            font-size: 14px;
        }

        /* ============ 数据指标 ============ */
        .metrics-grid {
            display: grid;
            grid-template-columns: 5fr 4fr 3fr;
            gap: 24px;
        }
        .metric-card {
            background-color: var(--bg-white);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
            text-align: left;
            transition: all var(--transition);
            border-top: 3px solid var(--primary);
        }
        .metric-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .metric-card.accent-border {
            border-top-color: var(--accent);
        }
        .metric-card.silver-border {
            border-top-color: var(--silver);
        }
        .metric-number {
            font-size: 44px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 8px;
        }
        .metric-card.accent-border .metric-number {
            color: var(--accent);
        }
        .metric-card.silver-border .metric-number {
            color: var(--silver);
        }
        .metric-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
            letter-spacing: 0.02em;
        }

        /* ============ 服务流程 ============ */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
            counter-reset: step;
        }
        .process-step {
            position: relative;
            background-color: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            text-align: center;
            counter-increment: step;
            transition: all var(--transition);
        }
        .process-step:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }
        .process-step::before {
            content: counter(step, decimal-leading-zero);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background-color: var(--primary-light);
            color: var(--primary);
            font-size: 16px;
            font-weight: 700;
            border-radius: 50%;
            margin: 0 auto 12px;
        }
        .process-step h4 {
            margin-bottom: 8px;
            font-size: 16px;
        }
        .process-step p {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* ============ FAQ ============ */
        .faq-section .accordion {
            max-width: 840px;
            margin: 0 auto;
        }
        .faq-item {
            background-color: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: 8px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-card);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 24px;
            cursor: pointer;
            background-color: var(--primary-light);
            border: none;
            width: 100%;
            text-align: left;
            font-family: var(--font-stack);
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            transition: all var(--transition);
            position: relative;
        }
        .faq-question:hover {
            background-color: #DCE8F2;
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--primary);
            border-radius: 50%;
            color: var(--primary);
            transition: transform var(--transition);
            font-size: 12px;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            background-color: var(--bg-white);
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 20px 24px;
        }
        .faq-item.active .faq-icon {
            transform: rotate(180deg);
            background-color: var(--primary);
            color: #fff;
        }
        .faq-answer p {
            margin-bottom: 0;
            color: var(--text-body);
            line-height: 1.9;
            font-size: 15px;
        }

        /* ============ CTA Section ============ */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 60%, var(--primary-deeper) 100%);
            padding: 72px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(201,162,39,0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section::after {
            content: "";
            position: absolute;
            bottom: -40%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }
        .cta-content h2 {
            color: #fff;
            font-size: 32px;
            margin-bottom: 16px;
        }
        .cta-content p {
            color: rgba(255,255,255,0.85);
            font-size: 16px;
            margin-bottom: 28px;
        }
        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        /* ============ Footer ============ */
        .site-footer {
            background-color: #1A2B3C;
            color: rgba(255,255,255,0.8);
            padding: 56px 0 0;
            font-size: 14px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }
        .footer-col p {
            line-height: 1.8;
            font-size: 13px;
            color: rgba(255,255,255,0.7);
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255,255,255,0.7);
            text-decoration: none;
            font-size: 13px;
            transition: all var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer-logo .logo-icon {
            width: 34px;
            height: 34px;
            font-size: 15px;
        }
        .footer-logo .logo-text {
            color: #fff;
            font-size: 17px;
        }
        .footer-logo .logo-text span {
            color: var(--accent);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            padding: 18px 0;
            font-size: 12px;
            color: rgba(255,255,255,0.55);
        }
        .footer-legal {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .footer-legal a {
            color: rgba(255,255,255,0.55);
            text-decoration: none;
            transition: color var(--transition);
        }
        .footer-legal a:hover {
            color: var(--accent);
        }

        /* ============ 响应式 ============ */
        @media (max-width: 1023px) {
            .header-nav {
                gap: 18px;
            }
            .header-nav a {
                font-size: 13px;
            }
            .header-search {
                min-width: 130px;
            }
            .overview-block {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .overview-image img {
                height: 260px;
            }
            .service-item {
                grid-template-columns: 1fr;
                gap: 24px;
                padding: 24px 0;
            }
            .service-item.reverse .service-image {
                order: 1;
            }
            .service-item.reverse .service-text {
                order: 2;
            }
            .service-image img {
                height: 220px;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
            }
            .process-steps {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 767px) {
            :root {
                --section-pad-desktop: 56px 0;
            }
            .container {
                padding: 0 16px;
            }
            h1 {
                font-size: 28px;
            }
            h2 {
                font-size: 24px;
            }
            .section-title {
                font-size: 24px;
            }
            .site-header {
                height: 60px;
            }
            .header-nav {
                display: none;
            }
            .header-search {
                display: none;
            }
            .header-logo {
                min-width: auto;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }
            .logo-text {
                font-size: 15px;
            }
            .hero-section {
                min-height: 240px;
            }
            .hero-content {
                padding: 48px 0 40px;
            }
            .hero-content h1 {
                font-size: 28px;
            }
            .hero-content p {
                font-size: 15px;
            }
            .hero-cta-group {
                flex-direction: column;
                gap: 10px;
            }
            .hero-cta-group .btn-primary,
            .hero-cta-group .btn-outline {
                width: 100%;
                justify-content: center;
            }
            .overview-image img {
                height: 200px;
            }
            .service-image img {
                height: 180px;
            }
            .metrics-grid {
                grid-template-columns: 1fr;
            }
            .metric-card {
                padding: 24px 20px;
            }
            .metric-number {
                font-size: 36px;
            }
            .process-steps {
                grid-template-columns: 1fr;
            }
            .faq-question {
                padding: 14px 18px;
                font-size: 14px;
            }
            .faq-answer {
                padding: 0 18px;
            }
            .faq-item.active .faq-answer {
                padding: 16px 18px;
            }
            .cta-section {
                padding: 48px 0;
            }
            .cta-content h2 {
                font-size: 24px;
            }
            .cta-buttons {
                flex-direction: column;
            }
            .cta-buttons .btn-light,
            .cta-buttons .btn-outline {
                width: 100%;
                justify-content: center;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                text-align: left;
                gap: 10px;
            }
            .footer-legal {
                flex-wrap: wrap;
                gap: 10px;
            }
            .btn-primary,
            .btn-outline {
                padding: 10px 18px;
                font-size: 13px;
            }
        }
        @media (max-width: 639px) {
            .header-actions .btn-primary {
                padding: 8px 14px;
                font-size: 12px;
            }
            .header-icon-btn {
                width: 32px;
                height: 32px;
                font-size: 12px;
            }
            .breadcrumb-bar {
                padding: 8px 0;
            }
            .breadcrumb {
                font-size: 12px;
                flex-wrap: wrap;
            }
            .section-pad {
                padding: 40px 0;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #2E6DA4;
            --primary-dark: #245A8A;
            --primary-deeper: #1D4A72;
            --primary-light: #E8F0F7;
            --accent: #C9A227;
            --accent-light: #F5EDD6;
            --silver: #8C9BA8;
            --bg-white: #FFFFFF;
            --bg-alt: #F5F8FB;
            --text-heading: #1A2B3C;
            --text-body: #3C4A56;
            --text-muted: #6B7A86;
            --border: #DBE4EC;
            --radius-card: 10px;
            --radius-btn: 6px;
            --radius-input: 6px;
            --radius-badge: 4px;
            --shadow-card: 0 2px 12px rgba(26, 43, 60, 0.08);
            --shadow-hover: 0 6px 18px rgba(26, 43, 60, 0.12);
            --shadow-nav: 0 2px 16px rgba(26, 43, 60, 0.06);
            --transition: 0.25s ease;
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --section-pad-desktop: 72px 0;
            --section-pad-mobile: 48px 0;
            --nav-height: 68px;
            --container-max: 1200px;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-body);
            background-color: var(--bg-white);
            overflow-x: hidden;
            margin: 0;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition), border-color var(--transition), background-color var(--transition), box-shadow var(--transition), transform var(--transition);
        }

        a:hover {
            color: var(--accent);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        .section-pad {
            padding: var(--section-pad-desktop);
        }

        @media (max-width: 640px) {
            .section-pad {
                padding: var(--section-pad-mobile);
            }
        }

        .section-alt {
            background-color: var(--bg-alt);
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 14px;
        }

        .section-tag i {
            font-size: 12px;
        }

        .section-title {
            font-size: 30px;
            line-height: 1.35;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }

        @media (max-width: 640px) {
            .section-title {
                font-size: 24px;
            }
        }

        .section-subtitle {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-muted);
            max-width: 760px;
            margin-bottom: 36px;
        }

        /* ============ Header / Nav ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 999;
            background-color: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            box-shadow: 0 1px 0 var(--border);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-nav);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            min-width: 150px;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 17px;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .logo-text span {
            color: var(--primary);
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 26px;
            flex: 1;
            justify-content: center;
        }

        .header-nav a {
            font-size: 14px;
            color: var(--text-body);
            font-weight: 500;
            position: relative;
            padding: 6px 0;
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .header-nav a::after {
            content: "";
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
            transition: width var(--transition);
        }

        .header-nav a:hover {
            color: var(--primary);
        }

        .header-nav a:hover::after {
            width: 100%;
        }

        .header-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .header-nav a.active::after {
            width: 100%;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .header-search {
            display: flex;
            align-items: center;
            background: var(--bg-alt);
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            padding: 6px 12px;
            gap: 8px;
            width: 180px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .header-search:hover {
            border-color: var(--primary);
            background: var(--primary-light);
        }

        .header-search i {
            font-size: 13px;
            color: var(--text-muted);
        }

        .header-search input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 13px;
            color: var(--text-body);
            width: 100%;
            font-family: var(--font-stack);
        }

        .header-search .kbd-hint {
            font-size: 11px;
            color: var(--text-muted);
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 4px;
            padding: 1px 6px;
            white-space: nowrap;
        }

        .header-quick-btn {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            border: 1px solid var(--border);
            background: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            cursor: pointer;
            font-size: 13px;
            transition: all var(--transition);
        }

        .header-quick-btn:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            border: 1px solid var(--primary);
            border-radius: var(--radius-btn);
            padding: 9px 20px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
            line-height: 1.4;
            font-family: var(--font-stack);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
        }

        .btn-primary:active {
            transform: scale(0.97);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
            border-radius: var(--radius-btn);
            padding: 8px 18px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
            line-height: 1.4;
            font-family: var(--font-stack);
        }

        .btn-outline:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
        }

        .btn-accent {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #fff;
            border: 1px solid var(--accent);
            border-radius: var(--radius-btn);
            padding: 10px 22px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
            line-height: 1.4;
            font-family: var(--font-stack);
        }

        .btn-accent:hover {
            background: #b3921f;
            border-color: #b3921f;
            color: #fff;
        }

        .mobile-nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            background: #fff;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--text-body);
            transition: all var(--transition);
        }

        .mobile-nav-toggle:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-color: var(--primary);
        }

        @media (max-width: 1024px) {
            .header-nav {
                gap: 18px;
            }
            .header-nav a {
                font-size: 13px;
            }
            .header-search {
                width: 140px;
            }
            .header-actions {
                gap: 8px;
            }
        }

        @media (max-width: 820px) {
            .header-nav {
                display: none;
            }
            .header-search {
                display: none;
            }
            .mobile-nav-toggle {
                display: flex;
            }
            .header-actions .btn-primary {
                display: none;
            }
        }

        /* ============ Mobile nav panel ============ */
        .mobile-nav-panel {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-nav);
            z-index: 998;
            padding: 16px 24px 24px;
            flex-direction: column;
            gap: 4px;
        }

        .mobile-nav-panel.open {
            display: flex;
        }

        .mobile-nav-panel a {
            padding: 12px 8px;
            font-size: 15px;
            color: var(--text-body);
            font-weight: 500;
            border-bottom: 1px solid var(--border);
            transition: all var(--transition);
        }

        .mobile-nav-panel a:last-child {
            border-bottom: none;
        }

        .mobile-nav-panel a.active {
            color: var(--primary);
            font-weight: 600;
            background: var(--primary-light);
            border-radius: 6px;
            padding-left: 16px;
        }

        .mobile-nav-panel a:hover {
            color: var(--primary);
            padding-left: 16px;
        }

        /* ============ Hero ============ */
        .page-hero {
            background: linear-gradient(135deg, var(--bg-alt) 0%, var(--primary-light) 55%, #f0f5fa 100%);
            position: relative;
            overflow: hidden;
            padding: 56px 0 48px;
            border-bottom: 1px solid var(--border);
        }

        .page-hero::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -40px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(46, 109, 164, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .page-hero::after {
            content: "";
            position: absolute;
            bottom: -80px;
            left: -30px;
            width: 260px;
            height: 260px;
            background: radial-gradient(circle, rgba(201, 162, 39, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-muted);
            transition: color var(--transition);
        }

        .breadcrumb a:hover {
            color: var(--primary);
        }

        .breadcrumb .separator {
            color: var(--silver);
            font-size: 11px;
        }

        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }

        .page-hero-content {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }

        .page-hero-left {
            flex: 1;
            min-width: 280px;
            max-width: 680px;
        }

        .page-hero-left h1 {
            font-size: 40px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-heading);
            margin-bottom: 14px;
            letter-spacing: 0.01em;
        }

        @media (max-width: 640px) {
            .page-hero-left h1 {
                font-size: 28px;
            }
        }

        .page-hero-left .hero-desc {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-muted);
            margin-bottom: 20px;
            max-width: 620px;
        }

        .page-hero-right {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .hero-stat-mini {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
        }

        .hero-stat-mini .mini-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 14px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            min-width: 110px;
        }

        .hero-stat-mini .mini-num {
            font-size: 26px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.3;
        }

        .hero-stat-mini .mini-label {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 2px;
        }

        @media (max-width: 768px) {
            .page-hero {
                padding: 36px 0 32px;
            }
            .page-hero-right {
                width: 100%;
            }
            .hero-stat-mini {
                width: 100%;
                justify-content: flex-start;
            }
            .hero-stat-mini .mini-item {
                flex: 1;
                min-width: 80px;
            }
        }

        /* ============ Data metrics ============ */
        .metrics-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 16px;
            margin-bottom: 32px;
        }

        .metric-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 22px 20px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .metric-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .metric-card.large {
            grid-row: span 2;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: #fff;
            border-color: var(--primary);
            padding: 28px 24px;
        }

        .metric-card.large .metric-num {
            color: #fff;
            font-size: 52px;
        }

        .metric-card.large .metric-label {
            color: rgba(255, 255, 255, 0.85);
        }

        .metric-card.large .metric-desc {
            color: rgba(255, 255, 255, 0.75);
            margin-top: 10px;
            font-size: 14px;
            line-height: 1.7;
        }

        .metric-num {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            letter-spacing: -0.01em;
        }

        .metric-num .unit {
            font-size: 16px;
            font-weight: 500;
            color: var(--text-muted);
            margin-left: 4px;
        }

        .metric-card.large .metric-num .unit {
            color: rgba(255, 255, 255, 0.7);
        }

        .metric-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-heading);
            margin-top: 6px;
        }

        .metric-desc {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        @media (max-width: 768px) {
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .metric-card.large {
                grid-column: span 2;
                grid-row: auto;
            }
            .metric-num {
                font-size: 28px;
            }
            .metric-card.large .metric-num {
                font-size: 36px;
            }
        }

        @media (max-width: 480px) {
            .metrics-grid {
                grid-template-columns: 1fr;
            }
            .metric-card.large {
                grid-column: span 1;
            }
        }

        /* ============ Resource intro ============ */
        .resource-intro-grid {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 36px;
            align-items: center;
        }

        .resource-intro-grid .intro-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            position: relative;
        }

        .resource-intro-grid .intro-image img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .resource-intro-grid .intro-image:hover img {
            transform: scale(1.03);
        }

        .resource-intro-grid .intro-image .img-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(transparent, rgba(26, 43, 60, 0.6));
            padding: 30px 20px 16px;
        }

        .resource-intro-grid .intro-image .img-overlay span {
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.04em;
        }

        .resource-intro-grid .intro-content h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 14px;
            line-height: 1.35;
        }

        @media (max-width: 640px) {
            .resource-intro-grid .intro-content h2 {
                font-size: 22px;
            }
        }

        .resource-intro-grid .intro-content p {
            font-size: 15px;
            line-height: 1.9;
            color: var(--text-body);
            margin-bottom: 14px;
        }

        .intro-feature-list {
            list-style: none;
            padding: 0;
            margin: 16px 0 0;
        }

        .intro-feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 8px 0;
            font-size: 14px;
            color: var(--text-body);
        }

        .intro-feature-list li i {
            color: var(--primary);
            font-size: 14px;
            margin-top: 4px;
            flex-shrink: 0;
        }

        @media (max-width: 768px) {
            .resource-intro-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .resource-intro-grid .intro-image img {
                height: 220px;
            }
        }

        /* ============ Data table ============ */
        .data-table-wrapper {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }

        .data-table-header {
            background: var(--primary-light);
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            border-bottom: 1px solid var(--border);
        }

        .data-table-header h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-heading);
            margin: 0;
        }

        .data-table-header .table-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 4px 14px;
        }

        .custom-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
        }

        .custom-table thead th {
            background: var(--bg-alt);
            color: var(--text-heading);
            font-weight: 700;
            font-size: 13px;
            text-align: left;
            padding: 14px 20px;
            border-bottom: 2px solid var(--border);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .custom-table tbody td {
            padding: 14px 20px;
            border-bottom: 1px solid var(--border);
            color: var(--text-body);
            vertical-align: middle;
        }

        .custom-table tbody tr {
            transition: background var(--transition);
        }

        .custom-table tbody tr:hover {
            background: var(--primary-light);
        }

        .custom-table tbody tr:last-child td {
            border-bottom: none;
        }

        .table-badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 11px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 999px;
            background: var(--accent-light);
            color: #8a6d1a;
            white-space: nowrap;
        }

        .table-badge.blue {
            background: var(--primary-light);
            color: var(--primary-dark);
        }

        .table-badge.green {
            background: #e4f5ec;
            color: #1e7a4a;
        }

        .table-download-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            transition: color var(--transition);
            white-space: nowrap;
        }

        .table-download-link:hover {
            color: var(--accent);
        }

        .table-download-link i {
            font-size: 12px;
        }

        @media (max-width: 768px) {
            .custom-table thead th,
            .custom-table tbody td {
                padding: 10px 12px;
                font-size: 12px;
            }
            .data-table-header {
                padding: 14px 16px;
            }
            .custom-table {
                font-size: 12px;
            }
        }

        @media (max-width: 560px) {
            .custom-table {
                display: block;
                overflow-x: auto;
                white-space: nowrap;
            }
        }

        /* ============ Reports list ============ */
        .reports-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 32px;
        }

        .report-card {
            display: flex;
            gap: 16px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 20px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            align-items: flex-start;
        }

        .report-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: var(--primary);
        }

        .report-icon {
            width: 46px;
            height: 46px;
            border-radius: var(--radius-btn);
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 19px;
            flex-shrink: 0;
        }

        .report-info {
            flex: 1;
        }

        .report-info h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-heading);
            margin: 0 0 6px;
            line-height: 1.4;
        }

        .report-info p {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0 0 10px;
            line-height: 1.7;
        }

        .report-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 12px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .report-meta i {
            font-size: 11px;
            margin-right: 3px;
        }

        @media (max-width: 768px) {
            .reports-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .report-card {
                padding: 16px;
            }
        }

        /* ============ Deep analysis ============ */
        .analysis-grid {
            display: grid;
            grid-template-columns: 7fr 5fr;
            gap: 36px;
            align-items: start;
        }

        .analysis-content h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 16px;
            line-height: 1.35;
        }

        @media (max-width: 640px) {
            .analysis-content h2 {
                font-size: 21px;
            }
        }

        .analysis-content h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
            margin: 20px 0 10px;
        }

        .analysis-content p {
            font-size: 15px;
            line-height: 1.9;
            color: var(--text-body);
            margin-bottom: 14px;
        }

        .analysis-content ul {
            list-style: none;
            padding: 0;
            margin: 12px 0;
        }

        .analysis-content ul li {
            position: relative;
            padding-left: 20px;
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-body);
            margin-bottom: 6px;
        }

        .analysis-content ul li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 11px;
            width: 7px;
            height: 7px;
            background: var(--primary);
            border-radius: 50%;
        }

        .analysis-side {
            background: var(--bg-alt);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px;
            position: sticky;
            top: calc(var(--nav-height) + 24px);
        }

        .analysis-side h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 14px;
        }

        .side-stats-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .side-stat-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
        }

        .side-stat-item:last-child {
            border-bottom: none;
        }

        .side-stat-label {
            font-size: 13px;
            color: var(--text-muted);
        }

        .side-stat-value {
            font-size: 15px;
            font-weight: 700;
            color: var(--primary);
        }

        @media (max-width: 768px) {
            .analysis-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .analysis-side {
                position: static;
            }
        }

        /* ============ Process steps ============ */
        .steps-inline {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr 1fr;
            gap: 16px;
            margin-top: 24px;
        }

        .step-inline-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 20px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            text-align: center;
        }

        .step-inline-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .step-inline-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 50%;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .step-inline-card h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-heading);
            margin: 0 0 6px;
        }

        .step-inline-card p {
            font-size: 12px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .steps-inline {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .step-inline-card {
                padding: 14px;
            }
        }

        @media (max-width: 480px) {
            .steps-inline {
                grid-template-columns: 1fr;
            }
        }

        /* ============ FAQ ============ */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            margin-bottom: 10px;
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: var(--primary);
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 16px 20px;
            cursor: pointer;
            background: var(--primary-light);
            border: none;
            width: 100%;
            text-align: left;
            font-size: 14px;
            font-weight: 700;
            color: var(--text-heading);
            font-family: var(--font-stack);
            transition: all var(--transition);
            user-select: none;
        }

        .faq-question:hover {
            background: #dbe7f0;
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            transition: transform var(--transition);
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            background: #fff;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        .faq-answer-inner {
            padding: 16px 20px;
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-body);
            border-top: 1px solid var(--border);
        }

        /* ============ CTA ============ */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 50%, var(--primary-deeper) 100%);
            padding: 56px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -60px;
            width: 280px;
            height: 280px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section h2 {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            line-height: 1.35;
        }

        @media (max-width: 640px) {
            .cta-section h2 {
                font-size: 22px;
            }
        }

        .cta-section p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 24px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.8;
        }

        .cta-buttons {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-white {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            color: var(--primary-dark);
            border: 1px solid #fff;
            border-radius: var(--radius-btn);
            padding: 11px 24px;
            font-size: 14px;
            font-weight: 700;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
            font-family: var(--font-stack);
            line-height: 1.4;
        }

        .btn-white:hover {
            background: var(--accent-light);
            border-color: var(--accent-light);
            color: var(--text-heading);
        }

        .btn-ghost-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.5);
            border-radius: var(--radius-btn);
            padding: 10px 22px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
            font-family: var(--font-stack);
            line-height: 1.4;
        }

        .btn-ghost-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            color: #fff;
        }

        /* ============ Footer ============ */
        .site-footer {
            background: #1A2B3C;
            color: rgba(255, 255, 255, 0.75);
            padding: 48px 0 24px;
            font-size: 13px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 3fr 2fr 2fr 2.5fr;
            gap: 36px;
            margin-bottom: 32px;
        }

        .footer-col .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }

        .footer-col .footer-logo .logo-icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 14px;
        }

        .footer-col .footer-logo .logo-text {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
        }

        .footer-col .footer-logo .logo-text span {
            color: var(--accent);
        }

        .footer-col p {
            font-size: 13px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 0;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 18px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-legal {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-legal a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 12px;
        }

        .footer-legal a:hover {
            color: var(--accent);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

/* roulang page: category7 */
:root {
            --primary: #2E6DA4;
            --primary-dark: #245A8A;
            --primary-deeper: #1D4A72;
            --primary-light: #E8F0F7;
            --accent: #C9A227;
            --accent-light: #F5EDD6;
            --silver: #8C9BA8;
            --bg-white: #FFFFFF;
            --bg-alt: #F5F8FB;
            --text-heading: #1A2B3C;
            --text-body: #3C4A56;
            --text-muted: #6B7A86;
            --border: #DBE4EC;
            --radius-card: 10px;
            --radius-btn: 6px;
            --radius-input: 6px;
            --radius-badge: 4px;
            --shadow-card: 0 2px 12px rgba(26, 43, 60, 0.08);
            --shadow-hover: 0 6px 18px rgba(26, 43, 60, 0.12);
            --shadow-nav: 0 2px 16px rgba(26, 43, 60, 0.06);
            --transition: 0.25s ease;
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --section-pad-desktop: 88px 0;
            --section-pad-mobile: 56px 0;
            --nav-height: 68px;
            --container-max: 1200px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-body);
            background-color: var(--bg-white);
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition), border-color var(--transition), background-color var(--transition), box-shadow var(--transition), transform var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 16px;
        }

        .section-pad {
            padding: var(--section-pad-mobile);
        }
        .section-alt {
            background-color: var(--bg-alt);
        }

        .section-title {
            font-size: 24px;
            line-height: 1.35;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }
        .section-subtitle {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-muted);
            max-width: 720px;
            margin-bottom: 40px;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 14px;
        }
        .section-tag i {
            font-size: 12px;
        }

        /* ============ Header / Nav ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 999;
            background-color: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            box-shadow: 0 1px 0 var(--border);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-nav);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            flex-wrap: nowrap;
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            min-width: 140px;
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 17px;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .logo-text span {
            color: var(--primary);
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 24px;
            flex: 1;
            justify-content: center;
            flex-wrap: wrap;
        }
        .header-nav a {
            font-size: 14px;
            color: var(--text-body);
            font-weight: 500;
            position: relative;
            padding: 6px 0;
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .header-nav a::after {
            content: "";
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
            transition: width var(--transition);
        }
        .header-nav a:hover {
            color: var(--primary);
        }
        .header-nav a:hover::after {
            width: 100%;
        }
        .header-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .header-nav a.active::after {
            width: 100%;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .header-search {
            display: flex;
            align-items: center;
            gap: 8px;
            border: 1px solid var(--border);
            border-radius: var(--radius-input);
            padding: 6px 14px;
            background-color: var(--bg-white);
            transition: border-color var(--transition), box-shadow var(--transition);
            min-width: 180px;
        }
        .header-search:hover {
            border-color: var(--primary);
            background-color: var(--primary-light);
        }
        .header-search input {
            border: none;
            outline: none;
            font-size: 13px;
            color: var(--text-body);
            background: transparent;
            flex: 1;
            min-width: 0;
            font-family: var(--font-stack);
        }
        .header-search .search-kbd {
            font-size: 11px;
            color: var(--text-muted);
            background-color: var(--bg-alt);
            border-radius: 4px;
            padding: 2px 6px;
            white-space: nowrap;
            letter-spacing: 0.04em;
        }
        .header-icon-btn {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            border: 1px solid var(--border);
            background-color: var(--bg-white);
            color: var(--text-muted);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all var(--transition);
            font-size: 14px;
            flex-shrink: 0;
        }
        .header-icon-btn:hover {
            background-color: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary);
        }
        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            background-color: var(--primary);
            color: #fff;
            border: 1px solid var(--primary);
            border-radius: var(--radius-btn);
            font-size: 13px;
            font-weight: 600;
            white-space: nowrap;
            cursor: pointer;
            transition: all var(--transition);
        }
        .header-cta:hover {
            background-color: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(46, 109, 164, 0.3);
        }
        .header-cta:active {
            transform: scale(0.97);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text-heading);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 4px;
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background-color: var(--primary-light);
        }

        /* ============ Hero ============ */
        .page-hero {
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            padding: 80px 0 60px;
        }
        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(255,255,255,0.93) 0%, rgba(232,240,247,0.78) 55%, rgba(46,109,164,0.22) 100%);
        }
        .page-hero .container {
            position: relative;
            z-index: 1;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--primary);
            font-weight: 500;
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb .separator {
            color: var(--silver);
            font-size: 11px;
        }
        .breadcrumb .current {
            color: var(--text-heading);
            font-weight: 600;
        }
        .page-hero h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 14px;
            line-height: 1.3;
            letter-spacing: 0.01em;
        }
        .page-hero .hero-subtitle {
            font-size: 16px;
            color: var(--text-body);
            max-width: 680px;
            line-height: 1.9;
        }

        /* ============ Contact Section ============ */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
        }
        .contact-info-col {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .contact-info-card {
            background-color: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 28px 24px;
            border: 1px solid var(--border);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .contact-info-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .contact-info-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
        }
        .contact-info-item:last-child {
            border-bottom: none;
        }
        .contact-info-icon {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            background-color: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            flex-shrink: 0;
        }
        .contact-info-text h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 4px;
        }
        .contact-info-text p {
            font-size: 14px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.7;
        }
        .contact-info-text a {
            color: var(--primary);
            font-weight: 500;
        }

        /* Form */
        .contact-form-wrap {
            background-color: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 32px 28px;
            border: 1px solid var(--border);
        }
        .contact-form-wrap h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 8px;
        }
        .contact-form-wrap .form-note {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .form-group {
            margin-bottom: 18px;
        }
        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 6px;
            letter-spacing: 0.02em;
        }
        .form-group label .required {
            color: #C0392B;
            margin-left: 2px;
        }
        .form-control {
            width: 100%;
            border: 1px solid var(--border);
            border-radius: var(--radius-input);
            padding: 12px 16px;
            font-size: 14px;
            color: var(--text-body);
            font-family: var(--font-stack);
            background-color: var(--bg-white);
            transition: border-color var(--transition), box-shadow var(--transition);
            box-sizing: border-box;
        }
        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 2px rgba(46, 109, 164, 0.15);
            outline: none;
        }
        .form-control::placeholder {
            color: var(--silver);
        }
        textarea.form-control {
            resize: vertical;
            min-height: 120px;
        }
        .form-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background-color: var(--primary);
            color: #fff;
            border: 1px solid var(--primary);
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition);
            font-family: var(--font-stack);
            width: 100%;
            justify-content: center;
        }
        .form-btn:hover {
            background-color: var(--primary-dark);
            border-color: var(--primary-dark);
            box-shadow: 0 4px 12px rgba(46, 109, 164, 0.3);
            transform: translateY(-1px);
        }
        .form-btn:active {
            transform: scale(0.97);
        }
        .form-success {
            display: none;
            background-color: var(--primary-light);
            border: 1px solid var(--primary);
            border-radius: var(--radius-card);
            padding: 16px 20px;
            margin-top: 18px;
            font-size: 14px;
            color: var(--primary-deeper);
            font-weight: 500;
        }
        .form-success.show {
            display: block;
            animation: fadeIn 0.4s ease;
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(-8px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* ============ Process Section ============ */
        .process-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            margin-top: 24px;
        }
        .process-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            background-color: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 24px 20px;
            border-left: 3px solid var(--primary);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .process-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .process-num {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background-color: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .process-content h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 6px;
        }
        .process-content p {
            font-size: 14px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.8;
        }

        /* ============ Advantage Section ============ */
        .adv-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            margin-top: 24px;
        }
        .adv-card {
            background-color: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 26px 22px;
            text-align: left;
            border: 1px solid var(--border);
            transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
        }
        .adv-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: var(--primary);
        }
        .adv-card .adv-icon {
            width: 46px;
            height: 46px;
            border-radius: 10px;
            background-color: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 14px;
        }
        .adv-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 8px;
        }
        .adv-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.8;
        }

        /* ============ Scenario Section ============ */
        .scenario-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
            margin-top: 24px;
        }
        .scenario-card {
            background-color: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .scenario-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .scenario-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .scenario-body {
            padding: 22px 20px;
        }
        .scenario-body h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 8px;
        }
        .scenario-body p {
            font-size: 14px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.8;
        }
        .scenario-badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 3px 10px;
            border-radius: var(--radius-badge);
            margin-bottom: 10px;
        }

        /* ============ Stats Section ============ */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-top: 24px;
        }
        .stat-item {
            text-align: center;
            padding: 24px 16px;
            background-color: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
        }
        .stat-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-number span {
            font-size: 20px;
            color: var(--accent);
        }
        .stat-label {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ============ Location Section ============ */
        .location-wrap {
            background-color: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 28px 24px;
            border: 1px solid var(--border);
            margin-top: 24px;
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }
        .location-info h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 10px;
        }
        .location-info p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 8px;
            line-height: 1.8;
        }
        .location-map-placeholder {
            background-color: var(--bg-alt);
            border-radius: var(--radius-card);
            min-height: 220px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 14px;
            border: 1px dashed var(--border);
        }

        /* ============ FAQ ============ */
        .faq-list {
            margin-top: 24px;
        }
        .faq-item {
            background-color: var(--bg-white);
            border-radius: 8px;
            margin-bottom: 12px;
            border: 1px solid var(--border);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-card);
        }
        .faq-question {
            width: 100%;
            background-color: var(--primary-light);
            border: none;
            padding: 16px 20px;
            text-align: left;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-heading);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-family: var(--font-stack);
            transition: background var(--transition);
            border-radius: 8px;
        }
        .faq-question:hover {
            background-color: #D5E4F0;
        }
        .faq-question .faq-arrow {
            font-size: 13px;
            color: var(--primary);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-question.active .faq-arrow {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            background-color: var(--bg-white);
            padding: 0 20px;
        }
        .faq-answer.open {
            max-height: 400px;
            padding: 16px 20px;
        }
        .faq-answer p {
            font-size: 14px;
            color: var(--text-body);
            margin: 0;
            line-height: 1.9;
        }

        /* ============ CTA ============ */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 60%, var(--primary-deeper) 100%);
            padding: 56px 0;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            line-height: 1.35;
        }
        .cta-section p {
            font-size: 15px;
            color: rgba(255,255,255,0.85);
            max-width: 600px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }
        .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .cta-btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background-color: #fff;
            color: var(--primary);
            border: 2px solid #fff;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 700;
            cursor: pointer;
            transition: all var(--transition);
            font-family: var(--font-stack);
        }
        .cta-btn-primary:hover {
            background-color: var(--accent-light);
            border-color: var(--accent-light);
            color: var(--primary-deeper);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(0,0,0,0.2);
        }
        .cta-btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background-color: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.6);
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition);
            font-family: var(--font-stack);
        }
        .cta-btn-outline:hover {
            border-color: #fff;
            background-color: rgba(255,255,255,0.1);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ============ Footer ============ */
        .site-footer {
            background-color: #1A2B3C;
            color: rgba(255,255,255,0.8);
            padding: 56px 0 28px;
            font-size: 14px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 28px;
            margin-bottom: 36px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }
        .footer-logo .logo-icon {
            width: 34px;
            height: 34px;
            font-size: 15px;
        }
        .footer-logo .logo-text {
            color: #fff;
            font-size: 17px;
        }
        .footer-logo .logo-text span {
            color: var(--accent);
        }
        .footer-col p {
            font-size: 13px;
            line-height: 1.8;
            color: rgba(255,255,255,0.65);
            margin-bottom: 10px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.04em;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: rgba(255,255,255,0.65);
            font-size: 13px;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.12);
            padding-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            font-size: 12px;
            color: rgba(255,255,255,0.55);
        }
        .footer-legal {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }
        .footer-legal a {
            color: rgba(255,255,255,0.6);
            font-size: 12px;
        }
        .footer-legal a:hover {
            color: var(--accent);
        }

        /* ============ Responsive ============ */
        @media (min-width: 640px) {
            .section-pad {
                padding: var(--section-pad-desktop);
            }
            .section-title {
                font-size: 30px;
            }
            .page-hero h1 {
                font-size: 40px;
            }
            .contact-grid {
                grid-template-columns: 1fr 1.2fr;
            }
            .process-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .adv-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-row {
                grid-template-columns: repeat(4, 1fr);
            }
            .location-wrap {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr 1fr;
            }
            .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
                align-items: center;
            }
        }

        @media (min-width: 1024px) {
            .header-nav {
                gap: 30px;
            }
            .header-search {
                min-width: 200px;
            }
            .header-cta {
                font-size: 14px;
                padding: 9px 20px;
            }
            .contact-grid {
                grid-template-columns: 1fr 1.25fr;
                gap: 40px;
            }
            .process-list {
                grid-template-columns: repeat(4, 1fr);
            }
            .adv-grid {
                grid-template-columns: repeat(4, 1fr);
            }
            .scenario-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .scenario-card img {
                height: 220px;
            }
        }

        @media (max-width: 1023px) {
            .header-nav {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background-color: #fff;
                flex-direction: column;
                align-items: flex-start;
                gap: 0;
                padding: 16px 24px;
                box-shadow: var(--shadow-nav);
                border-bottom: 1px solid var(--border);
                z-index: 998;
            }
            .header-nav.open {
                display: flex;
            }
            .header-nav a {
                padding: 12px 0;
                width: 100%;
                border-bottom: 1px solid var(--bg-alt);
                font-size: 15px;
            }
            .header-nav a:last-child {
                border-bottom: none;
            }
            .nav-toggle {
                display: block;
            }
            .header-search {
                min-width: auto;
                width: auto;
            }
            .header-search input {
                display: none;
            }
            .header-search .search-kbd {
                display: none;
            }
            .header-cta {
                padding: 7px 14px;
                font-size: 12px;
            }
        }

        @media (max-width: 639px) {
            .site-header {
                height: 60px;
            }
            .header-logo {
                min-width: 120px;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }
            .logo-text {
                font-size: 15px;
            }
            .header-icon-btn {
                width: 32px;
                height: 32px;
                font-size: 12px;
            }
            .header-cta {
                padding: 6px 12px;
                font-size: 11px;
            }
            .page-hero {
                padding: 48px 0 36px;
            }
            .page-hero h1 {
                font-size: 27px;
            }
            .page-hero .hero-subtitle {
                font-size: 14px;
            }
            .contact-form-wrap {
                padding: 24px 18px;
            }
            .contact-info-card {
                padding: 22px 18px;
            }
            .stat-number {
                font-size: 28px;
            }
            .cta-section h2 {
                font-size: 22px;
            }
            .site-footer {
                padding: 40px 0 20px;
            }
        }

/* roulang page: category6 */
:root {
            --primary: #2E6DA4;
            --primary-dark: #245A8A;
            --primary-deeper: #1D4A72;
            --primary-light: #E8F0F7;
            --accent: #C9A227;
            --accent-light: #F5EDD6;
            --silver: #8C9BA8;
            --bg-white: #FFFFFF;
            --bg-alt: #F5F8FB;
            --text-heading: #1A2B3C;
            --text-body: #3C4A56;
            --text-muted: #6B7A86;
            --border: #DBE4EC;
            --radius-card: 10px;
            --radius-btn: 6px;
            --radius-input: 6px;
            --radius-badge: 4px;
            --shadow-card: 0 2px 12px rgba(26, 43, 60, 0.08);
            --shadow-hover: 0 6px 18px rgba(26, 43, 60, 0.12);
            --shadow-nav: 0 2px 16px rgba(26, 43, 60, 0.06);
            --transition: 0.25s ease;
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --section-pad-desktop: 88px 0;
            --section-pad-mobile: 56px 0;
            --nav-height: 68px;
            --container-max: 1200px;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-body);
            background-color: var(--bg-white);
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition), border-color var(--transition), background-color var(--transition), box-shadow var(--transition), transform var(--transition);
        }

        a:hover {
            color: var(--accent);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-pad {
            padding: var(--section-pad-desktop);
        }

        .section-alt {
            background-color: var(--bg-alt);
        }

        .section-title {
            font-size: 30px;
            line-height: 1.35;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }

        .section-subtitle {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-muted);
            max-width: 760px;
            margin-bottom: 40px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 14px;
        }

        .section-tag i {
            font-size: 12px;
        }

        /* ============ Header / Nav ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 999;
            background-color: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            box-shadow: 0 1px 0 var(--border);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-nav);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            min-width: 160px;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 17px;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .logo-text span {
            color: var(--primary);
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 30px;
            flex: 1;
            justify-content: center;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .header-nav::-webkit-scrollbar {
            display: none;
        }

        .header-nav a {
            font-size: 14px;
            color: var(--text-body);
            font-weight: 500;
            position: relative;
            padding: 6px 0;
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .header-nav a::after {
            content: "";
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
            transition: width var(--transition);
        }

        .header-nav a:hover {
            color: var(--primary);
        }

        .header-nav a:hover::after {
            width: 100%;
        }

        .header-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .header-nav a.active::after {
            width: 100%;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .header-search {
            display: flex;
            align-items: center;
            gap: 6px;
            background-color: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-input);
            padding: 6px 12px;
            width: 180px;
            font-size: 13px;
            color: var(--text-muted);
            cursor: default;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .header-search i {
            font-size: 12px;
            color: var(--silver);
        }

        .header-search .kbd-hint {
            font-size: 11px;
            color: var(--silver);
            background-color: var(--bg-alt);
            padding: 1px 6px;
            border-radius: 4px;
            border: 1px solid var(--border);
            margin-left: auto;
        }

        .header-search:hover {
            border-color: var(--primary);
        }

        .header-icon-btn {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1px solid var(--border);
            background-color: var(--bg-white);
            color: var(--text-body);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: background-color var(--transition), border-color var(--transition), color var(--transition);
            font-size: 14px;
        }

        .header-icon-btn:hover {
            background-color: var(--bg-alt);
            border-color: var(--primary);
            color: var(--primary);
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background-color: var(--primary);
            color: #fff;
            border: 1px solid var(--primary);
            border-radius: var(--radius-btn);
            padding: 8px 18px;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.02em;
            transition: background-color var(--transition), transform var(--transition), box-shadow var(--transition);
            cursor: pointer;
            white-space: nowrap;
        }

        .header-cta:hover {
            background-color: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(46, 109, 164, 0.25);
        }

        .header-cta:active {
            transform: scale(0.97);
        }

        /* ============ Hero ============ */
        .page-hero {
            background: linear-gradient(135deg, var(--primary-light) 0%, var(--bg-white) 55%, #FDFBF4 100%);
            padding: 64px 0 48px;
            border-bottom: 1px solid var(--border);
            position: relative;
            overflow: hidden;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -60px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(46, 109, 164, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .page-hero::after {
            content: "";
            position: absolute;
            bottom: -60px;
            left: -40px;
            width: 220px;
            height: 220px;
            background: radial-gradient(circle, rgba(201, 162, 39, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 20px;
            position: relative;
            z-index: 2;
        }

        .breadcrumb a {
            color: var(--text-muted);
            transition: color var(--transition);
        }

        .breadcrumb a:hover {
            color: var(--primary);
        }

        .breadcrumb .separator {
            color: var(--silver);
            font-size: 11px;
        }

        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }

        .page-hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
        }

        .page-hero h1 {
            font-size: 40px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }

        .page-hero .hero-subtitle {
            font-size: 17px;
            line-height: 1.9;
            color: var(--text-body);
            max-width: 700px;
        }

        /* ============ Help Overview ============ */
        .help-overview {
            padding: 64px 0;
        }

        .help-overview-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .help-overview-text h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 16px;
            line-height: 1.4;
        }

        .help-overview-text p {
            font-size: 15px;
            line-height: 1.95;
            color: var(--text-body);
            margin-bottom: 14px;
        }

        .help-overview-image {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .help-overview-image img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            border-radius: var(--radius-card);
        }

        .help-overview-image::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(26, 43, 60, 0.25) 0%, transparent 40%);
            pointer-events: none;
            border-radius: var(--radius-card);
        }

        /* ============ Quick Nav Cards ============ */
        .quick-nav-section {
            padding: 48px 0;
            background-color: var(--bg-alt);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .quick-nav-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .quick-nav-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            text-align: left;
            transition: box-shadow var(--transition), border-color var(--transition), transform var(--transition);
            cursor: pointer;
            display: block;
            color: var(--text-body);
        }

        .quick-nav-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
            transform: translateY(-3px);
            color: var(--text-body);
        }

        .quick-nav-card .card-icon {
            width: 44px;
            height: 44px;
            background-color: var(--primary-light);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 18px;
            margin-bottom: 14px;
        }

        .quick-nav-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 8px;
        }

        .quick-nav-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        /* ============ FAQ Section ============ */
        .faq-section {
            padding: 64px 0 80px;
        }

        .faq-layout {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 32px;
            align-items: start;
        }

        .faq-main-col {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }

        .faq-group {
            background-color: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-card);
        }

        .faq-group-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 20px;
            padding-bottom: 14px;
            border-bottom: 1px solid var(--border);
        }

        .faq-group-header .group-icon {
            width: 38px;
            height: 38px;
            background-color: var(--primary-light);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 16px;
            flex-shrink: 0;
        }

        .faq-group-header h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
            margin: 0;
        }

        .faq-group-header .group-count {
            font-size: 12px;
            color: var(--text-muted);
            background-color: var(--bg-alt);
            padding: 2px 10px;
            border-radius: 999px;
            margin-left: auto;
            border: 1px solid var(--border);
        }

        .custom-accordion {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .custom-accordion-item {
            background-color: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: 8px;
            overflow: hidden;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .custom-accordion-item:hover {
            border-color: var(--primary);
        }

        .custom-accordion-item.is-active {
            border-color: var(--primary);
            box-shadow: 0 2px 10px rgba(46, 109, 164, 0.08);
        }

        .custom-accordion-title {
            display: flex;
            align-items: center;
            gap: 12px;
            width: 100%;
            padding: 16px 18px;
            background-color: var(--primary-light);
            border: none;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-heading);
            text-align: left;
            transition: background-color var(--transition), color var(--transition);
            font-family: var(--font-stack);
            line-height: 1.5;
        }

        .custom-accordion-title:hover {
            background-color: #DCE8F2;
            color: var(--primary-dark);
        }

        .custom-accordion-title .accordion-arrow {
            margin-left: auto;
            font-size: 13px;
            color: var(--primary);
            transition: transform var(--transition);
            flex-shrink: 0;
        }

        .custom-accordion-item.is-active .accordion-arrow {
            transform: rotate(180deg);
        }

        .custom-accordion-content {
            display: none;
            padding: 18px 20px;
            background-color: var(--bg-white);
            font-size: 14px;
            line-height: 1.9;
            color: var(--text-body);
            border-top: 1px solid var(--border);
        }

        .custom-accordion-item.is-active .custom-accordion-content {
            display: block;
            animation: fadeIn 0.25s ease;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(-4px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ============ Sidebar Help Cards ============ */
        .help-sidebar {
            display: flex;
            flex-direction: column;
            gap: 20px;
            position: sticky;
            top: 84px;
        }

        .help-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
        }

        .help-card h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .help-card h4 i {
            color: var(--primary);
            font-size: 14px;
        }

        .help-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 14px;
        }

        .help-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            transition: color var(--transition), gap var(--transition);
        }

        .help-card .card-link:hover {
            color: var(--accent);
            gap: 10px;
        }

        .help-card.highlight {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-color: var(--primary);
            color: #fff;
        }

        .help-card.highlight h4 {
            color: #fff;
        }

        .help-card.highlight h4 i {
            color: var(--accent);
        }

        .help-card.highlight p {
            color: rgba(255, 255, 255, 0.85);
        }

        .help-card.highlight .card-link {
            color: #fff;
            background-color: rgba(255, 255, 255, 0.15);
            padding: 8px 14px;
            border-radius: var(--radius-btn);
            display: inline-flex;
        }

        .help-card.highlight .card-link:hover {
            background-color: rgba(255, 255, 255, 0.25);
            color: #fff;
        }

        /* ============ Response Promise ============ */
        .response-section {
            padding: 56px 0;
            background-color: var(--bg-alt);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .response-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .response-item {
            background-color: var(--bg-white);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            text-align: center;
        }

        .response-item .response-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 8px;
        }

        .response-item .response-number span {
            font-size: 16px;
            font-weight: 500;
            color: var(--text-muted);
        }

        .response-item h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 8px;
        }

        .response-item p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        /* ============ Resources Recommend ============ */
        .resources-recommend {
            padding: 64px 0;
        }

        .resources-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .resource-card {
            display: flex;
            gap: 20px;
            background-color: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 20px;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition), border-color var(--transition), transform var(--transition);
            align-items: flex-start;
        }

        .resource-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        .resource-card img {
            width: 140px;
            height: 100px;
            object-fit: cover;
            border-radius: 6px;
            flex-shrink: 0;
        }

        .resource-card-content {
            flex: 1;
        }

        .resource-card-content h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 6px;
        }

        .resource-card-content p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 10px;
        }

        .resource-card-content .resource-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color var(--transition);
        }

        .resource-card-content .resource-link:hover {
            color: var(--accent);
        }

        /* ============ Feedback Invite ============ */
        .feedback-section {
            padding: 56px 0;
            background: linear-gradient(135deg, var(--primary-light) 0%, var(--bg-white) 60%, #FDFBF4 100%);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .feedback-inner {
            display: flex;
            align-items: center;
            gap: 32px;
            justify-content: space-between;
            flex-wrap: wrap;
        }

        .feedback-text h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 10px;
        }

        .feedback-text p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.85;
            max-width: 600px;
            margin: 0;
        }

        .feedback-actions {
            display: flex;
            gap: 14px;
            flex-shrink: 0;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background-color: var(--primary);
            color: #fff;
            border: 1px solid var(--primary);
            border-radius: var(--radius-btn);
            padding: 12px 24px;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.02em;
            cursor: pointer;
            transition: background-color var(--transition), transform var(--transition), box-shadow var(--transition);
            font-family: var(--font-stack);
        }

        .btn-primary:hover {
            background-color: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(46, 109, 164, 0.25);
        }

        .btn-primary:active {
            transform: scale(0.97);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background-color: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
            border-radius: var(--radius-btn);
            padding: 12px 24px;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.02em;
            cursor: pointer;
            transition: background-color var(--transition), color var(--transition), transform var(--transition);
            font-family: var(--font-stack);
        }

        .btn-outline:hover {
            background-color: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }

        .btn-outline:active {
            transform: scale(0.97);
        }

        /* ============ CTA Section ============ */
        .cta-section {
            padding: 64px 0;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 60%, var(--primary-deeper) 100%);
            color: #fff;
        }

        .cta-inner {
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 30px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            line-height: 1.4;
        }

        .cta-inner p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.85;
            margin-bottom: 28px;
        }

        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-white {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background-color: #fff;
            color: var(--primary-dark);
            border: 1px solid #fff;
            border-radius: var(--radius-btn);
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 700;
            letter-spacing: 0.02em;
            cursor: pointer;
            transition: background-color var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition);
            font-family: var(--font-stack);
        }

        .btn-white:hover {
            background-color: var(--primary-light);
            color: var(--primary-deeper);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(0, 0, 0, 0.2);
        }

        .btn-ghost-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background-color: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.5);
            border-radius: var(--radius-btn);
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.02em;
            cursor: pointer;
            transition: background-color var(--transition), border-color var(--transition), transform var(--transition);
            font-family: var(--font-stack);
        }

        .btn-ghost-light:hover {
            background-color: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            transform: translateY(-2px);
        }

        /* ============ Footer ============ */
        .site-footer {
            background-color: #1A2B3C;
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 28px;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 36px;
            margin-bottom: 36px;
        }

        .footer-col .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }

        .footer-col .footer-logo .logo-icon {
            width: 34px;
            height: 34px;
            font-size: 14px;
        }

        .footer-col .footer-logo .logo-text {
            color: #fff;
            font-size: 17px;
        }

        .footer-col p {
            font-size: 13px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.7);
            margin: 0 0 10px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.04em;
        }

        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition), padding-left var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.55);
        }

        .footer-bottom .footer-legal {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-bottom .footer-legal a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 12px;
            transition: color var(--transition);
        }

        .footer-bottom .footer-legal a:hover {
            color: var(--accent);
        }

        .footer-bottom .footer-legal span {
            color: rgba(255, 255, 255, 0.5);
        }

        /* ============ Responsive ============ */
        @media (max-width: 1024px) {
            :root {
                --section-pad-desktop: 64px 0;
            }
            .header-nav {
                gap: 20px;
            }
            .header-search {
                width: 140px;
            }
            .quick-nav-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .faq-layout {
                grid-template-columns: 1fr;
            }
            .help-sidebar {
                position: static;
                display: grid;
                grid-template-columns: repeat(2, 1fr);
            }
            .help-overview-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .help-overview-image img {
                height: 260px;
            }
            .response-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .resources-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-pad-desktop: 48px 0;
                --nav-height: 60px;
            }
            .container {
                padding: 0 16px;
            }
            .header-inner {
                gap: 12px;
            }
            .header-logo {
                min-width: auto;
            }
            .logo-text {
                font-size: 16px;
            }
            .header-nav {
                gap: 14px;
                justify-content: flex-start;
                padding-bottom: 2px;
            }
            .header-nav a {
                font-size: 13px;
                padding: 4px 0;
            }
            .header-search {
                display: none;
            }
            .header-icon-btn {
                width: 32px;
                height: 32px;
                font-size: 12px;
            }
            .header-cta {
                padding: 6px 12px;
                font-size: 12px;
            }
            .page-hero {
                padding: 40px 0 32px;
            }
            .page-hero h1 {
                font-size: 28px;
            }
            .page-hero .hero-subtitle {
                font-size: 15px;
            }
            .section-title {
                font-size: 22px;
            }
            .quick-nav-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .quick-nav-card {
                padding: 18px 16px;
            }
            .faq-group {
                padding: 18px 14px;
            }
            .faq-group-header h3 {
                font-size: 16px;
            }
            .custom-accordion-title {
                font-size: 14px;
                padding: 14px 14px;
                gap: 8px;
            }
            .custom-accordion-content {
                padding: 14px;
                font-size: 13px;
            }
            .help-sidebar {
                grid-template-columns: 1fr;
            }
            .help-card {
                padding: 18px 16px;
            }
            .response-grid {
                grid-template-columns: 1fr;
            }
            .resources-recommend {
                padding: 48px 0;
            }
            .resource-card {
                flex-direction: column;
            }
            .resource-card img {
                width: 100%;
                height: 160px;
            }
            .feedback-inner {
                flex-direction: column;
                align-items: flex-start;
                gap: 20px;
            }
            .feedback-actions {
                width: 100%;
                flex-direction: column;
            }
            .btn-primary,
            .btn-outline,
            .btn-white,
            .btn-ghost-light {
                width: 100%;
                justify-content: center;
                font-size: 14px;
                padding: 10px 18px;
            }
            .cta-inner h2 {
                font-size: 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .footer-bottom .footer-legal {
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
            }
        }

        @media (max-width: 520px) {
            .header-actions {
                gap: 6px;
            }
            .header-cta {
                padding: 5px 10px;
                font-size: 11px;
            }
            .header-icon-btn {
                width: 28px;
                height: 28px;
                font-size: 11px;
            }
            .page-hero h1 {
                font-size: 24px;
            }
            .breadcrumb {
                font-size: 11px;
                flex-wrap: wrap;
            }
            .section-title {
                font-size: 20px;
            }
            .response-item .response-number {
                font-size: 28px;
            }
        }