/* roulang page: index */
:root {
            --primary: #2E6D9B;
            --primary-dark: #1F5A82;
            --primary-light: #EAF1F7;
            --accent: #C07A3E;
            --bg: #F7F9FC;
            --surface: #FFFFFF;
            --text: #1F2A36;
            --text-secondary: #4A5A68;
            --text-muted: #7A8A98;
            --border: #D9E2EC;
            --radius-sm: 8px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 8px rgba(31, 42, 54, 0.04);
            --shadow-md: 0 8px 24px rgba(31, 42, 54, 0.06);
            --shadow-lg: 0 12px 28px rgba(31, 42, 54, 0.10);
            --shadow-nav: 0 2px 12px rgba(31, 42, 54, 0.08);
            --transition: all 0.25s ease;
            --font-heading: 'Alibaba PuHuiTi', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
        }

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

        body {
            font-family: var(--font-body);
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.8;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-heading);
            font-weight: 700;
            color: var(--text);
            line-height: 1.35;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }

        a:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }

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

        .container {
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.97);
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-nav);
            background: rgba(255, 255, 255, 0.98);
        }

        .header-brand-row {
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .brand-logo {
            font-family: var(--font-heading);
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .brand-logo .brand-icon {
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
        }

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

        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 4px 12px;
            gap: 6px;
            min-width: 200px;
            transition: var(--transition);
        }

        .search-box:focus-within {
            border-color: var(--primary);
            background: var(--surface);
            box-shadow: 0 0 0 3px rgba(46, 109, 155, 0.1);
        }

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

        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 13px;
            color: var(--text);
            width: 100%;
            padding: 4px 0;
        }

        .trend-tag {
            font-size: 12px;
            color: var(--primary);
            background: var(--primary-light);
            padding: 4px 10px;
            border-radius: 999px;
            white-space: nowrap;
            font-weight: 500;
            transition: var(--transition);
        }

        .trend-tag:hover {
            background: #d5e4f0;
            color: var(--primary-dark);
        }

        .header-nav-row {
            height: 40px;
            display: flex;
            align-items: center;
            gap: 4px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }

        .header-nav-row::-webkit-scrollbar {
            display: none;
        }

        .header-nav-row .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 6px 14px;
            border-radius: 6px;
            white-space: nowrap;
            transition: var(--transition);
            position: relative;
        }

        .header-nav-row .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .header-nav-row .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }

        .header-nav-row .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 1px;
        }

        /* Mobile nav toggle */
        .navbar-toggler-custom {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: 6px;
            padding: 6px 10px;
            color: var(--text);
            font-size: 18px;
            cursor: pointer;
            transition: var(--transition);
        }

        .navbar-toggler-custom:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            padding: 120px 0 96px;
            min-height: 560px;
            display: flex;
            align-items: center;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(42, 102, 148, 0.88) 0%, rgba(46, 109, 155, 0.78) 50%, rgba(30, 70, 100, 0.85) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 1;
            color: #fff;
            max-width: 720px;
        }

        .hero-content .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.18);
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
        }

        .hero-content h1 {
            color: #fff;
            font-size: 42px;
            line-height: 1.3;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }

        .hero-content .hero-subtitle {
            font-size: 16px;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.92);
            margin-bottom: 32px;
            max-width: 600px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 32px;
        }

        .hero-actions .btn-primary-custom {
            background: #fff;
            color: var(--primary-dark);
            border: none;
            padding: 12px 28px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition);
            cursor: pointer;
        }

        .hero-actions .btn-primary-custom:hover {
            background: #f0f5fa;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
        }

        .hero-actions .btn-outline-custom {
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.6);
            padding: 12px 28px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
            cursor: pointer;
        }

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

        .invite-progress-wrapper {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 12px;
            padding: 20px 24px;
            backdrop-filter: blur(8px);
        }

        .invite-progress-label {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.9);
        }

        .invite-progress-label span:last-child {
            font-weight: 600;
            color: #fff;
        }

        .progress {
            height: 8px;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 999px;
            overflow: hidden;
        }

        .progress-bar {
            background: linear-gradient(90deg, #fff, #d4e4f0);
            border-radius: 999px;
            transition: width 0.6s ease;
        }

        /* ===== Section Common ===== */
        .section-block {
            padding: 72px 0;
        }

        .section-block .section-header {
            margin-bottom: 40px;
        }

        .section-block .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .section-block .section-title {
            font-size: 28px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .section-block .section-desc {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.9;
        }

        /* ===== Feature Grid ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 20px;
        }

        .feature-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: #c5d5e4;
        }

        .feature-card .feature-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary-light);
            position: absolute;
            top: 12px;
            right: 20px;
            line-height: 1;
            font-family: var(--font-heading);
            opacity: 0.8;
        }

        .feature-card .feature-icon {
            width: 44px;
            height: 44px;
            border-radius: 8px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            margin-bottom: 16px;
        }

        .feature-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text);
        }

        .feature-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 0;
        }

        .feature-card .cover-img {
            width: 100%;
            height: 160px;
            object-fit: cover;
            border-radius: 8px;
            margin-bottom: 16px;
        }

        .feature-card.col-span-4 {
            grid-column: span 4;
        }
        .feature-card.col-span-5 {
            grid-column: span 5;
        }
        .feature-card.col-span-6 {
            grid-column: span 6;
        }
        .feature-card.col-span-7 {
            grid-column: span 7;
        }
        .feature-card.col-span-8 {
            grid-column: span 8;
        }
        .feature-card.col-span-3 {
            grid-column: span 3;
        }

        .feature-timestamp {
            font-size: 12px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
            margin-bottom: 8px;
        }

        .feature-tag {
            display: inline-block;
            font-size: 12px;
            color: var(--accent);
            background: #fdf6ef;
            padding: 2px 10px;
            border-radius: 999px;
            font-weight: 500;
            margin-bottom: 8px;
        }

        /* ===== Scenario Rows ===== */
        .scenario-row {
            display: flex;
            align-items: center;
            gap: 32px;
            padding: 28px 0;
            border-bottom: 1px solid var(--border);
        }

        .scenario-row:last-child {
            border-bottom: none;
        }

        .scenario-row:nth-child(even) {
            flex-direction: row-reverse;
        }

        .scenario-row .scenario-img {
            flex: 0 0 300px;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .scenario-row .scenario-img img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: var(--transition);
        }

        .scenario-row .scenario-img img:hover {
            transform: scale(1.02);
        }

        .scenario-row .scenario-content {
            flex: 1;
        }

        .scenario-row .scenario-step {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 3px 12px;
            border-radius: 999px;
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }

        .scenario-row h3 {
            font-size: 20px;
            margin-bottom: 10px;
        }

        .scenario-row p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        /* ===== Success Cases ===== */
        .case-block {
            display: flex;
            align-items: center;
            gap: 32px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px 32px;
            margin-bottom: 20px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .case-block:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }

        .case-block .case-metrics {
            flex: 0 0 180px;
            text-align: center;
        }

        .case-block .case-metrics .metric-number {
            font-size: 40px;
            font-weight: 700;
            color: var(--primary);
            font-family: var(--font-heading);
            line-height: 1.2;
        }

        .case-block .case-metrics .metric-label {
            font-size: 13px;
            color: var(--text-muted);
        }

        .case-block .case-content {
            flex: 1;
        }

        .case-block .case-content h3 {
            font-size: 18px;
            margin-bottom: 8px;
        }

        .case-block .case-content p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 0;
        }

        .case-block .case-source {
            font-size: 12px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
            margin-top: 8px;
        }

        /* ===== Price Comparison ===== */
        .price-table-wrapper {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }

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

        .price-table th,
        .price-table td {
            padding: 16px 20px;
            text-align: left;
            border-bottom: 1px solid var(--border);
        }

        .price-table th {
            background: var(--primary-light);
            font-weight: 600;
            color: var(--text);
            font-size: 14px;
            letter-spacing: 0.3px;
        }

        .price-table td:first-child {
            font-weight: 500;
            color: var(--text);
        }

        .price-table .highlight-row {
            background: #fafcfe;
            border-left: 3px solid var(--primary);
        }

        .price-table .check-icon {
            color: var(--primary);
            font-size: 14px;
        }

        .price-table .dash-icon {
            color: #c0c8d0;
            font-size: 14px;
        }

        /* ===== Stats ===== */
        .stats-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            justify-content: space-between;
            background: var(--primary);
            border-radius: var(--radius-lg);
            padding: 36px 40px;
            color: #fff;
        }

        .stats-strip .stat-item {
            flex: 1;
            min-width: 120px;
            text-align: center;
        }

        .stats-strip .stat-number {
            font-size: 36px;
            font-weight: 700;
            font-family: var(--font-heading);
            line-height: 1.2;
            color: #fff;
        }

        .stats-strip .stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.8);
            margin-top: 4px;
        }

        /* ===== News List ===== */
        .news-layout {
            display: flex;
            gap: 32px;
        }

        .news-main {
            flex: 2;
        }

        .news-sidebar {
            flex: 1;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            height: fit-content;
        }

        .news-item {
            display: flex;
            gap: 16px;
            padding: 18px 0;
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }

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

        .news-item:hover {
            padding-left: 8px;
        }

        .news-item .news-date {
            flex: 0 0 56px;
            text-align: center;
            font-size: 12px;
            color: var(--text-muted);
            padding-top: 4px;
        }

        .news-item .news-date .day {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary);
            display: block;
            line-height: 1.2;
            font-family: var(--font-heading);
        }

        .news-item .news-content {
            flex: 1;
        }

        .news-item .news-content h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 6px;
            line-height: 1.5;
        }

        .news-item .news-content h4 a {
            color: var(--text);
            transition: var(--transition);
        }

        .news-item .news-content h4 a:hover {
            color: var(--primary);
        }

        .news-item .news-content p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 0;
        }

        .news-item .news-meta {
            font-size: 12px;
            color: var(--text-muted);
            display: flex;
            gap: 12px;
        }

        .news-sidebar h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--text);
        }

        .news-sidebar .trend-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .news-sidebar .trend-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
            font-size: 13px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }

        .news-sidebar .trend-list li:last-child {
            border-bottom: none;
        }

        .news-sidebar .trend-list li:hover {
            color: var(--primary);
            padding-left: 6px;
        }

        .news-sidebar .trend-list li i {
            color: var(--accent);
            font-size: 10px;
        }

        /* ===== Testimonials ===== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .testimonial-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        .testimonial-card .quote-icon {
            color: var(--primary-light);
            font-size: 24px;
            margin-bottom: 12px;
        }

        .testimonial-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            font-style: italic;
            margin-bottom: 16px;
        }

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

        .testimonial-card .author-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            font-size: 14px;
        }

        .testimonial-card .author-info {
            font-size: 13px;
        }

        .testimonial-card .author-info strong {
            display: block;
            color: var(--text);
            font-size: 13px;
        }

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

        /* ===== Partner Tags ===== */
        .partner-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            justify-content: center;
        }

        .partner-tag {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 8px 18px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            cursor: default;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .partner-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: var(--shadow-md);
        }

        .partner-tag i {
            color: var(--accent);
            font-size: 11px;
            margin-right: 6px;
        }

        /* ===== FAQ ===== */
        .faq-list .accordion-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            background: var(--surface);
        }

        .faq-list .accordion-button {
            font-weight: 600;
            font-size: 15px;
            color: var(--text);
            background: var(--surface);
            padding: 18px 20px;
            transition: var(--transition);
            border: none;
            box-shadow: none;
        }

        .faq-list .accordion-button:not(.collapsed) {
            background: var(--primary-light);
            color: var(--primary-dark);
            box-shadow: none;
        }

        .faq-list .accordion-button:focus {
            box-shadow: none;
            border-color: var(--primary);
        }

        .faq-list .accordion-button::after {
            filter: brightness(0) saturate(100%) invert(36%) sepia(22%) saturate(623%) hue-rotate(169deg) brightness(94%) contrast(89%);
        }

        .faq-list .accordion-body {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            padding: 16px 20px 20px;
        }

        .faq-list .faq-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 12px;
            margin-right: 10px;
            flex-shrink: 0;
        }

        /* ===== Brand Intro ===== */
        .brand-intro-section {
            background: var(--primary);
            color: #fff;
            padding: 72px 0;
            border-radius: var(--radius-lg);
            margin: 40px 0;
        }

        .brand-intro-section h2 {
            color: #fff;
        }

        .brand-intro-section p {
            color: rgba(255, 255, 255, 0.9);
            font-size: 15px;
            line-height: 2;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary-light);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 26px;
            margin-bottom: 12px;
        }

        .cta-section p {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto 24px;
            line-height: 1.9;
        }

        /* ===== Buttons ===== */
        .btn-kaiyun {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 8px;
            padding: 10px 24px;
            font-size: 15px;
            font-weight: 500;
            font-family: var(--font-body);
            transition: var(--transition);
            cursor: pointer;
            letter-spacing: 0.3px;
        }

        .btn-kaiyun:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(31, 90, 130, 0.3);
        }

        .btn-kaiyun:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            box-shadow: none;
        }

        .btn-kaiyun-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
            border-radius: 8px;
            padding: 10px 24px;
            font-size: 15px;
            font-weight: 500;
            font-family: var(--font-body);
            transition: var(--transition);
            cursor: pointer;
        }

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

        .btn-kaiyun-outline:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            box-shadow: none;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #1a2532;
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 24px;
            margin-top: 72px;
        }

        .site-footer .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            font-family: var(--font-heading);
            margin-bottom: 12px;
        }

        .site-footer .footer-desc {
            font-size: 13px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 360px;
        }

        .site-footer .footer-title {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }

        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .site-footer .footer-links li {
            margin-bottom: 8px;
        }

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

        .site-footer .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 36px;
            padding-top: 20px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: space-between;
            align-items: center;
        }

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

        .site-footer .footer-bottom a:hover {
            color: #fff;
        }

        /* ===== Responsive ===== */
        @media (max-width: 991px) {
            .header-nav-row {
                display: none;
                flex-direction: column;
                align-items: stretch;
                height: auto;
                padding: 8px 0;
                background: var(--surface);
                border-top: 1px solid var(--border);
            }
            .header-nav-row.show {
                display: flex;
            }
            .header-nav-row .nav-link {
                padding: 10px 16px;
                border-radius: 6px;
                font-size: 15px;
            }
            .header-nav-row .nav-link.active::after {
                display: none;
            }
            .navbar-toggler-custom {
                display: block;
            }
            .hero-section {
                padding: 72px 0 64px;
                min-height: auto;
            }
            .hero-content h1 {
                font-size: 30px;
            }
            .feature-card.col-span-4,
            .feature-card.col-span-5,
            .feature-card.col-span-6,
            .feature-card.col-span-7,
            .feature-card.col-span-8,
            .feature-card.col-span-3 {
                grid-column: span 6;
            }
            .scenario-row,
            .scenario-row:nth-child(even) {
                flex-direction: column;
                align-items: flex-start;
                gap: 16px;
            }
            .scenario-row .scenario-img {
                flex: 0 0 auto;
                width: 100%;
            }
            .case-block {
                flex-direction: column;
                align-items: flex-start;
                gap: 16px;
                padding: 20px;
            }
            .case-block .case-metrics {
                flex: 0 0 auto;
                text-align: left;
                display: flex;
                gap: 20px;
            }
            .news-layout {
                flex-direction: column;
            }
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .section-block {
                padding: 48px 0;
            }
            .section-block .section-title {
                font-size: 24px;
            }
        }

        @media (max-width: 767px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .header-brand-row {
                height: 52px;
            }
            .brand-logo {
                font-size: 17px;
            }
            .search-box {
                min-width: 0;
                flex: 1;
                max-width: 140px;
            }
            .trend-tag {
                font-size: 11px;
                padding: 3px 8px;
                display: none;
            }
            .feature-card.col-span-4,
            .feature-card.col-span-5,
            .feature-card.col-span-6,
            .feature-card.col-span-7,
            .feature-card.col-span-8,
            .feature-card.col-span-3 {
                grid-column: span 12;
            }
            .hero-content h1 {
                font-size: 24px;
            }
            .hero-content .hero-subtitle {
                font-size: 14px;
            }
            .hero-actions .btn-primary-custom,
            .hero-actions .btn-outline-custom {
                padding: 10px 20px;
                font-size: 14px;
                width: 100%;
                text-align: center;
            }
            .hero-actions {
                flex-direction: column;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .stats-strip {
                padding: 24px 20px;
                flex-direction: column;
                gap: 16px;
            }
            .stats-strip .stat-number {
                font-size: 28px;
            }
            .section-block {
                padding: 40px 0;
            }
            .section-block .section-title {
                font-size: 22px;
            }
            .news-item {
                flex-direction: column;
                gap: 8px;
            }
            .news-item .news-date {
                flex: 0 0 auto;
                text-align: left;
                display: flex;
                align-items: baseline;
                gap: 8px;
            }
            .news-item .news-date .day {
                font-size: 16px;
                display: inline;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .cta-section {
                padding: 32px 20px;
            }
            .cta-section h2 {
                font-size: 22px;
            }
            .price-table th,
            .price-table td {
                padding: 12px 10px;
                font-size: 12px;
            }
        }

        @media (max-width: 575px) {
            .hero-section {
                padding: 48px 0 40px;
            }
            .invite-progress-wrapper {
                padding: 14px 16px;
            }
            .hero-content h1 {
                font-size: 21px;
                line-height: 1.45;
            }
            .feature-card {
                padding: 18px;
            }
            .feature-card .cover-img {
                height: 120px;
            }
            .section-block .section-title {
                font-size: 20px;
            }
            .section-block .section-desc {
                font-size: 14px;
            }
            .case-block .case-metrics {
                flex-direction: column;
                gap: 8px;
            }
            .case-block .case-metrics .metric-number {
                font-size: 30px;
            }
            .partner-tag {
                font-size: 12px;
                padding: 6px 14px;
            }
            .faq-list .accordion-button {
                font-size: 14px;
                padding: 14px 16px;
            }
            .faq-list .accordion-body {
                font-size: 13px;
                padding: 12px 16px 16px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #2E6D9B;
            --primary-dark: #1F5A82;
            --primary-light: #EAF1F7;
            --accent: #C07A3E;
            --bg: #F7F9FC;
            --surface: #FFFFFF;
            --text: #1F2A36;
            --text-secondary: #4A5A68;
            --text-muted: #7A8A98;
            --border: #D9E2EC;
            --radius-sm: 8px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 8px rgba(31, 42, 54, 0.04);
            --shadow-md: 0 8px 24px rgba(31, 42, 54, 0.06);
            --shadow-lg: 0 12px 28px rgba(31, 42, 54, 0.10);
            --shadow-nav: 0 2px 12px rgba(31, 42, 54, 0.08);
            --transition: all 0.25s ease;
            --font-heading: 'Alibaba PuHuiTi', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
        }
        body {
            font-family: var(--font-body);
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.8;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.97);
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-nav);
            background: rgba(255, 255, 255, 0.98);
        }
        .header-brand-row {
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .brand-logo {
            font-family: var(--font-heading);
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .brand-logo .brand-icon {
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 4px 12px;
            gap: 6px;
            min-width: 200px;
            transition: var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--primary);
            background: var(--surface);
            box-shadow: 0 0 0 3px rgba(46, 109, 155, 0.1);
        }
        .search-box i {
            color: var(--text-muted);
            font-size: 13px;
        }
        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 13px;
            color: var(--text);
            width: 100%;
            padding: 4px 0;
        }
        .trend-tag {
            font-size: 12px;
            color: var(--primary);
            background: var(--primary-light);
            padding: 4px 10px;
            border-radius: 999px;
            white-space: nowrap;
            font-weight: 500;
            transition: var(--transition);
        }
        .trend-tag:hover {
            background: #d5e4f0;
            color: var(--primary-dark);
        }
        .header-nav-row {
            height: 40px;
            display: flex;
            align-items: center;
            gap: 4px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .header-nav-row::-webkit-scrollbar {
            display: none;
        }
        .header-nav-row .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 6px 14px;
            border-radius: 6px;
            white-space: nowrap;
            transition: var(--transition);
            position: relative;
        }
        .header-nav-row .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .header-nav-row .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .header-nav-row .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 1px;
        }
        .navbar-toggler-custom {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: 6px;
            padding: 6px 10px;
            color: var(--text);
            font-size: 18px;
            cursor: pointer;
            transition: var(--transition);
        }
        .navbar-toggler-custom:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        /* ===== Banner ===== */
        .category-banner {
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            padding: 56px 0 48px;
            margin-bottom: 32px;
        }
        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(247, 249, 252, 0.92) 0%, rgba(234, 241, 247, 0.88) 100%);
        }
        .category-banner .container {
            position: relative;
            z-index: 1;
        }
        .banner-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 500;
            color: var(--primary);
            background: rgba(255, 255, 255, 0.8);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 4px 14px;
            margin-bottom: 12px;
        }
        .banner-eyebrow i {
            font-size: 12px;
        }
        .banner-title {
            font-family: var(--font-heading);
            font-size: 36px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
            line-height: 1.3;
        }
        .banner-desc {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 620px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* ===== Filter Toolbar ===== */
        .filter-toolbar {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 16px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 24px;
        }
        .filter-group {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .filter-label {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
            white-space: nowrap;
        }
        .filter-chip {
            font-size: 13px;
            color: var(--text-secondary);
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 5px 14px;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        .filter-chip:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .filter-chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .result-count {
            font-size: 13px;
            color: var(--text-muted);
            white-space: nowrap;
        }
        .result-count strong {
            color: var(--text);
            font-weight: 600;
        }
        .sort-select {
            font-size: 13px;
            color: var(--text-secondary);
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 6px;
            padding: 5px 10px;
            outline: none;
            cursor: pointer;
            transition: var(--transition);
        }
        .sort-select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(46, 109, 155, 0.1);
        }

        /* ===== Match Card ===== */
        .match-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            display: flex;
            flex-direction: row;
            margin-bottom: 16px;
            transition: var(--transition);
        }
        .match-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .match-card-img {
            flex: 0 0 280px;
            min-height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
            overflow: hidden;
        }
        .match-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .match-card:hover .match-card-img img {
            transform: scale(1.02);
        }
        .match-status-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            font-size: 12px;
            font-weight: 600;
            color: #fff;
            background: var(--primary);
            border-radius: 999px;
            padding: 3px 12px;
            z-index: 1;
        }
        .match-status-badge.live {
            background: #D64545;
        }
        .match-status-badge.upcoming {
            background: var(--accent);
        }
        .match-status-badge.ended {
            background: var(--text-muted);
        }
        .match-card-body {
            flex: 1;
            padding: 20px 24px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .match-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 8px;
            flex-wrap: wrap;
        }
        .match-card-meta i {
            font-size: 11px;
        }
        .match-card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .match-card-title {
            font-family: var(--font-heading);
            font-size: 19px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .match-card-title a {
            color: var(--text);
        }
        .match-card-title a:hover {
            color: var(--primary);
        }
        .match-card-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .match-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
        }
        .match-tags {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }
        .match-tag {
            font-size: 12px;
            color: var(--text-secondary);
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 2px 10px;
            transition: var(--transition);
        }
        .match-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .match-link {
            font-size: 13px;
            font-weight: 500;
            color: var(--primary);
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .match-link i {
            font-size: 11px;
            transition: transform 0.25s ease;
        }
        .match-link:hover i {
            transform: translateX(3px);
        }

        /* ===== Pagination ===== */
        .pagination-wrapper {
            display: flex;
            justify-content: center;
            margin-top: 24px;
        }
        .pagination-custom {
            display: flex;
            gap: 4px;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .pagination-custom li a,
        .pagination-custom li span {
            display: flex;
            align-items: center;
            justify-content: center;
            min-width: 36px;
            height: 36px;
            padding: 0 8px;
            font-size: 13px;
            color: var(--text-secondary);
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 6px;
            transition: var(--transition);
            cursor: pointer;
        }
        .pagination-custom li a:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .pagination-custom li.active span {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }

        /* ===== Data Feature Section ===== */
        .data-feature-section {
            padding: 56px 0;
            background: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            margin-top: 32px;
        }
        .section-heading {
            font-family: var(--font-heading);
            font-size: 28px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .data-feature-card {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            height: 100%;
            transition: var(--transition);
        }
        .data-feature-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }
        .data-feature-icon {
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            margin-bottom: 14px;
        }
        .data-feature-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
        }
        .data-feature-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 56px 0;
        }
        .accordion-custom .accordion-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 10px;
            overflow: hidden;
            transition: var(--transition);
        }
        .accordion-custom .accordion-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .accordion-custom .accordion-button {
            background: var(--surface);
            color: var(--text);
            font-weight: 600;
            font-size: 15px;
            padding: 18px 20px;
            border: none;
            box-shadow: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            background: var(--primary-light);
            color: var(--primary);
            box-shadow: none;
        }
        .accordion-custom .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(46, 109, 155, 0.1);
        }
        .accordion-custom .accordion-button::after {
            display: none;
        }
        .faq-number {
            width: 28px;
            height: 28px;
            background: var(--primary);
            color: #fff;
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 600;
            flex-shrink: 0;
        }
        .accordion-custom .accordion-body {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            padding: 0 20px 18px 58px;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 56px 0;
            background: var(--primary);
            border-radius: var(--radius-lg);
            margin: 32px 0 56px;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-title {
            font-family: var(--font-heading);
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .cta-desc {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 24px;
            line-height: 1.7;
            max-width: 560px;
        }
        .btn-cta-primary {
            display: inline-block;
            background: #fff;
            color: var(--primary);
            font-size: 15px;
            font-weight: 600;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            border: none;
            transition: var(--transition);
        }
        .btn-cta-primary:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-1px);
        }
        .btn-cta-outline {
            display: inline-block;
            background: transparent;
            color: #fff;
            font-size: 15px;
            font-weight: 500;
            padding: 9px 22px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.5);
            transition: var(--transition);
            margin-left: 8px;
        }
        .btn-cta-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            border-color: #fff;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--surface);
            border-top: 1px solid var(--border);
            padding: 48px 0 24px;
            margin-top: 8px;
        }
        .footer-brand {
            font-family: var(--font-heading);
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .footer-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 12px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 6px;
        }
        .footer-links a {
            font-size: 13px;
            color: var(--text-secondary);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-links a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            margin-top: 32px;
            padding-top: 16px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
            justify-content: space-between;
            align-items: center;
        }
        .footer-bottom span,
        .footer-bottom a {
            font-size: 12px;
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }

        /* ===== Responsive ===== */
        @media (max-width: 991px) {
            .navbar-toggler-custom {
                display: block;
            }
            .header-nav-row {
                position: absolute;
                top: 56px;
                left: 0;
                right: 0;
                background: var(--surface);
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                height: auto;
                flex-direction: column;
                padding: 12px 16px;
                gap: 2px;
                display: none;
            }
            .header-nav-row.open {
                display: flex;
            }
            .header-nav-row .nav-link {
                width: 100%;
                padding: 10px 14px;
            }
            .search-box {
                min-width: auto;
                flex: 1;
            }
            .trend-tag {
                display: none;
            }
            .banner-title {
                font-size: 28px;
            }
            .match-card {
                flex-direction: column;
            }
            .match-card-img {
                flex: 0 0 auto;
                height: 200px;
                width: 100%;
            }
            .match-card-body {
                padding: 16px 18px;
            }
            .match-card-title {
                font-size: 17px;
            }
            .section-heading {
                font-size: 24px;
            }
            .cta-title {
                font-size: 24px;
            }
        }
        @media (max-width: 767px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .category-banner {
                padding: 40px 0 32px;
            }
            .banner-title {
                font-size: 24px;
            }
            .banner-desc {
                font-size: 14px;
            }
            .filter-toolbar {
                padding: 12px 14px;
                flex-direction: column;
                align-items: flex-start;
            }
            .match-card-img {
                height: 160px;
            }
            .match-card-title {
                font-size: 16px;
            }
            .section-heading {
                font-size: 22px;
            }
            .data-feature-section,
            .faq-section,
            .cta-section {
                padding: 40px 0;
            }
            .cta-section {
                border-radius: var(--radius-md);
                padding: 32px 20px;
            }
            .btn-cta-outline {
                margin-left: 0;
                margin-top: 8px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
            }
        }
        @media (max-width: 575px) {
            .header-brand-row {
                height: 52px;
            }
            .brand-logo {
                font-size: 18px;
            }
            .brand-logo .brand-icon {
                width: 24px;
                height: 24px;
                font-size: 12px;
            }
            .search-box {
                padding: 3px 10px;
                gap: 4px;
                border-radius: 16px;
            }
            .search-box input {
                font-size: 12px;
            }
            .banner-title {
                font-size: 22px;
            }
            .match-card-img {
                height: 140px;
            }
            .match-card-body {
                padding: 14px 16px;
            }
            .match-card-desc {
                font-size: 13px;
            }
            .pagination-custom li a,
            .pagination-custom li span {
                min-width: 32px;
                height: 32px;
                font-size: 12px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #2E6D9B;
            --primary-dark: #1F5A82;
            --primary-light: #EAF1F7;
            --accent: #C07A3E;
            --bg: #F7F9FC;
            --surface: #FFFFFF;
            --text: #1F2A36;
            --text-secondary: #4A5A68;
            --text-muted: #7A8A98;
            --border: #D9E2EC;
            --radius-sm: 8px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 8px rgba(31,42,54,0.04);
            --shadow-md: 0 8px 24px rgba(31,42,54,0.06);
            --shadow-lg: 0 12px 28px rgba(31,42,54,0.10);
            --shadow-nav: 0 2px 12px rgba(31,42,54,0.08);
            --transition: all 0.25s ease;
            --font-heading: 'Alibaba PuHuiTi','Source Han Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
            --font-body: 'PingFang SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
        }
        * { box-sizing: border-box; }
        body {
            font-family: var(--font-body);
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.8;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); text-decoration: none; }
        img { max-width: 100%; height: auto; display: block; }
        .container { padding-left: 24px; padding-right: 24px; }
        @media (max-width: 576px) {
            .container { padding-left: 16px; padding-right: 16px; }
        }

        /* ===== Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255,255,255,0.97);
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }
        .site-header.scrolled { box-shadow: var(--shadow-nav); background: rgba(255,255,255,0.98); }
        .header-brand-row {
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .brand-logo {
            font-family: var(--font-heading);
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .brand-logo .brand-icon {
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
        }
        .header-actions { display: flex; align-items: center; gap: 12px; }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 4px 12px;
            gap: 6px;
            min-width: 200px;
            transition: var(--transition);
        }
        .search-box:focus-within { border-color: var(--primary); background: var(--surface); box-shadow: 0 0 0 3px rgba(46,109,155,0.1); }
        .search-box i { color: var(--text-muted); font-size: 13px; }
        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 13px;
            color: var(--text);
            width: 100%;
            padding: 4px 0;
        }
        .trend-tag {
            font-size: 12px;
            color: var(--primary);
            background: var(--primary-light);
            padding: 4px 10px;
            border-radius: 999px;
            white-space: nowrap;
            font-weight: 500;
            transition: var(--transition);
        }
        .trend-tag:hover { background: #d5e4f0; color: var(--primary-dark); }
        .header-nav-row {
            height: 40px;
            display: flex;
            align-items: center;
            gap: 4px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .header-nav-row::-webkit-scrollbar { display: none; }
        .header-nav-row .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 6px 14px;
            border-radius: 6px;
            white-space: nowrap;
            transition: var(--transition);
            position: relative;
        }
        .header-nav-row .nav-link:hover { color: var(--primary); background: var(--primary-light); }
        .header-nav-row .nav-link.active { color: var(--primary); background: var(--primary-light); font-weight: 600; }
        .header-nav-row .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 1px;
        }
        .navbar-toggler-custom {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: 6px;
            padding: 6px 10px;
            color: var(--text);
            font-size: 18px;
            cursor: pointer;
            transition: var(--transition);
        }
        .navbar-toggler-custom:hover { background: var(--primary-light); color: var(--primary); }

        @media (max-width: 992px) {
            .navbar-toggler-custom { display: inline-flex; align-items: center; justify-content: center; }
            .header-nav-row {
                height: auto;
                max-height: 0;
                overflow: hidden;
                flex-direction: column;
                align-items: stretch;
                gap: 2px;
                transition: max-height 0.35s ease;
                background: var(--surface);
                padding: 0;
            }
            .header-nav-row.show { max-height: 400px; padding: 8px 0; }
            .header-nav-row .nav-link { padding: 10px 16px; width: 100%; }
            .search-box { min-width: 140px; }
        }

        /* ===== Banner / Hero ===== */
        .category-banner {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            padding: 56px 0;
            margin-bottom: 48px;
        }
        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(247,249,252,0.9);
        }
        .category-banner .container { position: relative; z-index: 1; }
        .banner-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
        }
        .banner-title {
            font-family: var(--font-heading);
            font-size: 34px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 12px;
        }
        .banner-desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0;
        }
        .banner-form-card {
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            padding: 20px 24px;
        }
        .banner-form-card h2 {
            font-family: var(--font-heading);
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 12px;
        }
        .banner-form-card .form-control {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 14px;
            padding: 8px 12px;
            background: var(--bg);
            color: var(--text);
            transition: var(--transition);
        }
        .banner-form-card .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(46,109,155,0.1);
            background: var(--surface);
        }
        .banner-form-card .btn-primary-custom {
            background: var(--primary);
            border: none;
            border-radius: var(--radius-sm);
            color: #fff;
            font-weight: 500;
            padding: 8px 20px;
            font-size: 14px;
            transition: var(--transition);
        }
        .banner-form-card .btn-primary-custom:hover { background: var(--primary-dark); }
        .banner-form-card .form-text-muted { font-size: 12px; color: var(--text-muted); margin-top: 8px; }

        @media (max-width: 768px) {
            .category-banner { padding: 36px 0; }
            .banner-inner { grid-template-columns: 1fr; gap: 20px; }
            .banner-title { font-size: 26px; }
        }

        /* ===== Section Common ===== */
        .section-block { padding: 0 0 56px; }
        .section-block.alt-bg { background: var(--surface); padding: 56px 0; }
        .section-title {
            font-family: var(--font-heading);
            font-size: 28px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 8px;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0 0 24px;
            line-height: 1.7;
        }
        .section-head-row {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 16px;
            margin-bottom: 24px;
        }
        .section-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            color: var(--primary);
            background: var(--primary-light);
            border-radius: 999px;
            padding: 2px 12px;
            margin-bottom: 8px;
        }

        /* ===== Feature Cards ===== */
        .feature-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 20px;
            height: 100%;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .feature-item:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }
        .feature-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 12px;
            flex-shrink: 0;
        }
        .feature-item h3 {
            font-family: var(--font-heading);
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 8px;
        }
        .feature-item p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.7;
        }
        .feature-meta {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-top: auto;
            padding-top: 12px;
            font-size: 12px;
            color: var(--text-muted);
        }
        .feature-meta .badge-tag {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 2px 10px;
            color: var(--text-secondary);
        }

        /* ===== Data Service Cards (Horizontal) ===== */
        .data-service-list { display: flex; flex-direction: column; gap: 16px; }
        .data-service-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: row;
            min-height: 140px;
        }
        .data-service-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }
        .data-service-card .cover-wrap {
            width: 200px;
            min-width: 200px;
            overflow: hidden;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .data-service-card .cover-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .data-service-card .content-wrap {
            flex: 1;
            padding: 16px 20px;
            display: flex;
            flex-direction: column;
        }
        .data-service-card .content-top {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 6px;
            flex-wrap: wrap;
        }
        .data-service-card .content-top h3 {
            font-family: var(--font-heading);
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin: 0;
        }
        .data-service-card .content-top .tag-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--primary);
            flex-shrink: 0;
        }
        .data-service-card .content-desc {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0 0 10px;
            line-height: 1.7;
        }
        .data-service-card .content-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
            margin-top: auto;
            flex-wrap: wrap;
        }
        .data-service-card .content-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .data-service-card .content-meta .stat-value {
            font-weight: 600;
            color: var(--primary);
            font-size: 14px;
        }
        .data-service-card .btn-outline-custom {
            border: 1px solid var(--primary);
            color: var(--primary);
            border-radius: var(--radius-sm);
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 500;
            transition: var(--transition);
            background: transparent;
            white-space: nowrap;
        }
        .data-service-card .btn-outline-custom:hover { background: var(--primary); color: #fff; }

        @media (max-width: 768px) {
            .data-service-card { flex-direction: column; }
            .data-service-card .cover-wrap { width: 100%; min-width: auto; height: 160px; }
        }

        /* ===== Toolbar ===== */
        .toolbar-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .toolbar-filters {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }
        .btn-filter {
            border: 1px solid var(--border);
            background: var(--surface);
            color: var(--text-secondary);
            border-radius: 999px;
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 500;
            transition: var(--transition);
            cursor: pointer;
        }
        .btn-filter:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }
        .btn-filter.active { background: var(--primary); color: #fff; border-color: var(--primary); }
        .result-count { font-size: 13px; color: var(--text-muted); }

        /* ===== Scenario Blocks ===== */
        .scenario-block {
            display: flex;
            gap: 24px;
            align-items: flex-start;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
        }
        .scenario-block:hover { box-shadow: var(--shadow-md); }
        .scenario-number {
            width: 36px;
            height: 36px;
            min-width: 36px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
        }
        .scenario-content h4 {
            font-family: var(--font-heading);
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 6px;
        }
        .scenario-content p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.7;
        }

        /* ===== Process Timeline ===== */
        .process-list {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .process-step {
            flex: 1;
            min-width: 140px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 16px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
        }
        .process-step:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
        .process-step .step-num {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary-light);
            line-height: 1;
            margin-bottom: 8px;
            font-family: var(--font-heading);
        }
        .process-step h4 {
            font-family: var(--font-heading);
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 6px;
        }
        .process-step p {
            font-size: 13px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-section { padding: 48px 0; }
        .accordion-custom .accordion-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm) !important;
            margin-bottom: 10px;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .accordion-custom .accordion-item:hover { box-shadow: var(--shadow-sm); }
        .accordion-custom .accordion-button {
            background: var(--surface);
            color: var(--text);
            font-weight: 600;
            font-size: 15px;
            padding: 14px 18px;
            border-radius: var(--radius-sm) !important;
            transition: var(--transition);
            box-shadow: none !important;
            font-family: var(--font-heading);
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            background: var(--primary-light);
            color: var(--primary);
        }
        .accordion-custom .accordion-button:focus { box-shadow: none; }
        .accordion-custom .accordion-button::after { display: none; }
        .accordion-custom .accordion-body {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            padding: 14px 18px;
        }
        .accordion-custom .faq-icon {
            width: 24px;
            height: 24px;
            min-width: 24px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            margin-right: 10px;
            font-weight: 700;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 56px 0;
            text-align: center;
        }
        .cta-section h2 {
            font-family: var(--font-heading);
            font-size: 26px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 12px;
        }
        .cta-section p {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0 auto 24px;
            max-width: 560px;
            line-height: 1.7;
        }
        .btn-primary-custom {
            background: var(--primary);
            border: none;
            border-radius: var(--radius-sm);
            color: #fff;
            font-weight: 500;
            padding: 10px 28px;
            font-size: 15px;
            transition: var(--transition);
            display: inline-block;
            text-align: center;
        }
        .btn-primary-custom:hover { background: var(--primary-dark); color: #fff; }
        .btn-outline-custom {
            border: 1px solid var(--primary);
            color: var(--primary);
            border-radius: var(--radius-sm);
            padding: 10px 24px;
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
            display: inline-block;
            text-align: center;
            background: transparent;
        }
        .btn-outline-custom:hover { background: var(--primary); color: #fff; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--surface);
            border-top: 1px solid var(--border);
            padding: 48px 0 24px;
            margin-top: 48px;
        }
        .footer-brand {
            font-family: var(--font-heading);
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .footer-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0 0 8px;
        }
        .footer-title {
            font-family: var(--font-heading);
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 12px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li { margin-bottom: 6px; }
        .footer-links a {
            font-size: 13px;
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .footer-links a:hover { color: var(--primary); }
        .footer-links i { width: 18px; color: var(--text-muted); }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 16px;
            margin-top: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 8px 16px;
            font-size: 12px;
            color: var(--text-muted);
            justify-content: space-between;
        }
        .footer-bottom a { color: var(--text-muted); }
        .footer-bottom a:hover { color: var(--primary); }

        /* ===== Extra responsive ===== */
        @media (max-width: 576px) {
            .section-title { font-size: 22px; }
            .banner-title { font-size: 24px; }
            .data-service-card .content-wrap { padding: 12px 14px; }
            .process-step { min-width: 100%; }
            .toolbar-row { flex-direction: column; align-items: flex-start; }
        }

        /* Focus visible for accessibility */
        a:focus-visible, button:focus-visible, input:focus-visible, .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

/* roulang page: category3 */
:root {
            --primary: #2E6D9B;
            --primary-dark: #1F5A82;
            --primary-light: #EAF1F7;
            --accent: #C07A3E;
            --bg: #F7F9FC;
            --surface: #FFFFFF;
            --text: #1F2A36;
            --text-secondary: #4A5A68;
            --text-muted: #7A8A98;
            --border: #D9E2EC;
            --radius-sm: 8px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 8px rgba(31, 42, 54, 0.04);
            --shadow-md: 0 8px 24px rgba(31, 42, 54, 0.06);
            --shadow-lg: 0 12px 28px rgba(31, 42, 54, 0.10);
            --shadow-nav: 0 2px 12px rgba(31, 42, 54, 0.08);
            --transition: all 0.25s ease;
            --font-heading: 'Alibaba PuHuiTi', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: var(--font-body);
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.8;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.97);
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-nav);
            background: rgba(255, 255, 255, 0.98);
        }
        .header-brand-row {
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .brand-logo {
            font-family: var(--font-heading);
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .brand-logo:hover {
            color: var(--primary-dark);
        }
        .brand-logo .brand-icon {
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 4px 12px;
            gap: 6px;
            min-width: 200px;
            transition: var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--primary);
            background: var(--surface);
            box-shadow: 0 0 0 3px rgba(46, 109, 155, 0.1);
        }
        .search-box i {
            color: var(--text-muted);
            font-size: 13px;
        }
        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 13px;
            color: var(--text);
            width: 100%;
            padding: 4px 0;
        }
        .trend-tag {
            font-size: 12px;
            color: var(--primary);
            background: var(--primary-light);
            padding: 4px 10px;
            border-radius: 999px;
            white-space: nowrap;
            font-weight: 500;
            transition: var(--transition);
        }
        .trend-tag:hover {
            background: #d5e4f0;
            color: var(--primary-dark);
        }
        .header-nav-row {
            height: 40px;
            display: flex;
            align-items: center;
            gap: 4px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .header-nav-row::-webkit-scrollbar {
            display: none;
        }
        .header-nav-row .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 6px 14px;
            border-radius: 6px;
            white-space: nowrap;
            transition: var(--transition);
            position: relative;
        }
        .header-nav-row .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .header-nav-row .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .header-nav-row .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 1px;
        }
        .navbar-toggler-custom {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: 6px;
            padding: 6px 10px;
            color: var(--text);
            font-size: 18px;
            cursor: pointer;
            transition: var(--transition);
        }
        .navbar-toggler-custom:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        /* ===== Category Banner ===== */
        .category-banner {
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            padding: 56px 0 48px;
            min-height: 280px;
            display: flex;
            align-items: center;
        }
        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(234, 241, 247, 0.82);
            backdrop-filter: blur(2px);
        }
        .category-banner .banner-content {
            position: relative;
            z-index: 1;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }
        .banner-left {
            flex: 1 1 400px;
        }
        .banner-left h1 {
            font-family: var(--font-heading);
            font-size: 36px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .banner-left .banner-sub {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 620px;
            line-height: 1.7;
        }
        .banner-right {
            flex: 0 0 auto;
        }
        .banner-meta {
            background: rgba(255, 255, 255, 0.85);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            min-width: 180px;
            box-shadow: var(--shadow-sm);
        }
        .banner-meta .meta-number {
            font-family: var(--font-heading);
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        .banner-meta .meta-label {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* ===== Section Base ===== */
        .section-padding {
            padding: 56px 0;
        }
        .section-title {
            font-family: var(--font-heading);
            font-size: 28px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            letter-spacing: 0.3px;
        }
        .section-desc {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.7;
            margin-bottom: 32px;
        }
        .section-header-row {
            display: flex;
            flex-wrap: wrap;
            align-items: flex-end;
            justify-content: space-between;
            gap: 16px;
            margin-bottom: 32px;
        }
        .section-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 4px 12px;
            border-radius: 999px;
            letter-spacing: 0.5px;
            margin-bottom: 8px;
        }
        .section-title-wrap {
            flex: 1 1 400px;
        }
        .section-link-more {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            white-space: nowrap;
        }
        .section-link-more i {
            margin-left: 4px;
            font-size: 12px;
        }

        /* ===== Game List Cards ===== */
        .game-list-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            margin-bottom: 16px;
        }
        .game-list-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: rgba(46, 109, 155, 0.2);
        }
        .game-list-card .row {
            align-items: stretch;
        }
        .game-thumb {
            overflow: hidden;
            min-height: 150px;
            height: 100%;
        }
        .game-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }
        .game-list-card:hover .game-thumb img {
            transform: scale(1.02);
        }
        .game-info {
            padding: 16px 20px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            height: 100%;
        }
        .game-info .game-name {
            font-family: var(--font-heading);
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
        }
        .game-info .game-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .game-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
        }
        .game-date {
            font-size: 12px;
            color: var(--text-muted);
        }
        .game-tag {
            font-size: 12px;
            color: var(--primary);
            background: var(--primary-light);
            padding: 2px 10px;
            border-radius: 999px;
            font-weight: 500;
        }
        .game-tag.accent-tag {
            color: var(--accent);
            background: rgba(192, 122, 62, 0.12);
        }

        /* ===== Feature Modules ===== */
        .feature-block {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
        }
        .feature-block:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(46, 109, 155, 0.2);
        }
        .feature-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            margin-bottom: 12px;
        }
        .feature-title {
            font-family: var(--font-heading);
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
        }
        .feature-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== Scenario Section ===== */
        .scenario-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            margin-bottom: 16px;
            transition: var(--transition);
        }
        .scenario-item:hover {
            box-shadow: var(--shadow-md);
        }
        .step-number {
            flex: 0 0 36px;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-heading);
            font-size: 16px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .scenario-content h4 {
            font-family: var(--font-heading);
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 4px;
        }
        .scenario-content p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== Process ===== */
        .process-step {
            text-align: center;
            padding: 12px;
        }
        .process-step .process-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-heading);
            font-size: 20px;
            font-weight: 700;
            margin: 0 auto 10px;
            transition: var(--transition);
        }
        .process-step:hover .process-number {
            background: var(--primary);
            color: #fff;
        }
        .process-step .process-label {
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
        }
        .process-step .process-sub {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 2px;
        }

        /* ===== FAQ ===== */
        .faq-accordion .accordion-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 10px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .faq-accordion .accordion-button {
            background: var(--surface);
            color: var(--text);
            font-weight: 600;
            font-size: 15px;
            padding: 16px 20px;
            border: none;
            outline: none;
            box-shadow: none;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            background: var(--primary-light);
            color: var(--primary);
            box-shadow: none;
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(46, 109, 155, 0.12);
            border: none;
        }
        .faq-accordion .accordion-button .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 4px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
        }
        .faq-accordion .accordion-button:not(.collapsed) .faq-icon {
            background: var(--primary-dark);
        }
        .faq-accordion .accordion-body {
            padding: 14px 20px 18px 54px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .faq-accordion .accordion-button::after {
            display: none;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-lg);
            padding: 40px 48px;
            position: relative;
            overflow: hidden;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            right: -60px;
            top: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
        }
        .cta-section .cta-title {
            font-family: var(--font-heading);
            font-size: 24px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 6px;
            position: relative;
            z-index: 1;
        }
        .cta-section .cta-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 18px;
            position: relative;
            z-index: 1;
        }
        .btn-cta {
            background: #fff;
            color: var(--primary);
            border: none;
            border-radius: var(--radius-sm);
            padding: 10px 28px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition);
            position: relative;
            z-index: 1;
            display: inline-block;
        }
        .btn-cta:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
        }

        /* ===== Buttons ===== */
        .btn-primary-custom {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            padding: 10px 24px;
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
            display: inline-block;
        }
        .btn-primary-custom:hover {
            background: var(--primary-dark);
            color: #fff;
        }
        .btn-outline-custom {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
            border-radius: var(--radius-sm);
            padding: 9px 22px;
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
            display: inline-block;
        }
        .btn-outline-custom:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            padding: 10px 24px;
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
            display: inline-block;
        }
        .btn-accent:hover {
            background: #a56530;
            color: #fff;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--surface);
            border-top: 1px solid var(--border);
            padding: 48px 0 20px;
            margin-top: 8px;
        }
        .footer-brand {
            font-family: var(--font-heading);
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .footer-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 12px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 6px;
        }
        .footer-links a {
            font-size: 13px;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary);
        }
        .footer-links a i {
            margin-right: 6px;
            font-size: 12px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            margin-top: 32px;
            padding-top: 16px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }

        /* ===== Responsive ===== */
        @media (max-width: 991.98px) {
            .navbar-toggler-custom {
                display: block;
            }
            .header-nav-row {
                display: none;
                flex-direction: column;
                align-items: stretch;
                height: auto;
                padding: 8px 0;
                gap: 2px;
                background: var(--surface);
                border-top: 1px solid var(--border);
            }
            .header-nav-row.show {
                display: flex;
            }
            .header-nav-row .nav-link {
                padding: 10px 16px;
                border-radius: 4px;
                font-size: 15px;
            }
            .header-nav-row .nav-link.active::after {
                display: none;
            }
            .search-box {
                min-width: 140px;
            }
            .banner-left h1 {
                font-size: 28px;
            }
            .section-title {
                font-size: 24px;
            }
            .cta-section {
                padding: 28px 24px;
            }
            .cta-section .cta-title {
                font-size: 20px;
            }
        }
        @media (max-width: 767.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .category-banner {
                padding: 36px 0 32px;
                min-height: 220px;
            }
            .banner-left h1 {
                font-size: 24px;
            }
            .banner-right {
                display: none;
            }
            .section-padding {
                padding: 36px 0;
            }
            .section-title {
                font-size: 20px;
            }
            .section-desc {
                font-size: 14px;
                margin-bottom: 20px;
            }
            .section-header-row {
                margin-bottom: 20px;
            }
            .game-thumb {
                min-height: 120px;
                max-height: 160px;
            }
            .game-info {
                padding: 12px 16px;
            }
            .game-info .game-name {
                font-size: 16px;
            }
            .trend-tag {
                display: none;
            }
            .search-box {
                min-width: 100px;
            }
            .header-brand-row {
                height: 50px;
            }
            .brand-logo {
                font-size: 17px;
            }
            .faq-accordion .accordion-body {
                padding-left: 20px;
                padding-right: 16px;
            }
            .faq-accordion .accordion-button {
                padding: 14px 16px;
                font-size: 14px;
            }
        }
        @media (max-width: 575.98px) {
            .category-banner {
                min-height: 200px;
                padding: 28px 0 24px;
            }
            .banner-left h1 {
                font-size: 20px;
            }
            .banner-left .banner-sub {
                font-size: 13px;
            }
            .section-title {
                font-size: 18px;
            }
            .feature-block {
                padding: 16px;
            }
            .game-info .game-summary {
                -webkit-line-clamp: 3;
            }
            .process-step .process-number {
                width: 40px;
                height: 40px;
                font-size: 16px;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #2E6D9B;
            --primary-dark: #1F5A82;
            --primary-light: #EAF1F7;
            --accent: #C07A3E;
            --bg: #F7F9FC;
            --surface: #FFFFFF;
            --text: #1F2A36;
            --text-secondary: #4A5A68;
            --text-muted: #7A8A98;
            --border: #D9E2EC;
            --radius-sm: 8px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 8px rgba(31, 42, 54, 0.04);
            --shadow-md: 0 8px 24px rgba(31, 42, 54, 0.06);
            --shadow-lg: 0 12px 28px rgba(31, 42, 54, 0.10);
            --shadow-nav: 0 2px 12px rgba(31, 42, 54, 0.08);
            --transition: all 0.25s ease;
            --font-heading: 'Alibaba PuHuiTi', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
        }

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

        body {
            font-family: var(--font-body);
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.8;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            min-height: 100vh;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }

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

        .container {
            padding-left: 24px;
            padding-right: 24px;
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-heading);
            color: var(--text);
            margin: 0 0 16px 0;
        }
        h1 { font-size: 36px; font-weight: 700; line-height: 1.3; }
        h2 { font-size: 28px; font-weight: 600; line-height: 1.4; }
        h3 { font-size: 19px; font-weight: 600; line-height: 1.5; }
        p { margin-bottom: 0; color: var(--text-secondary); }

        .text-muted-alt { color: var(--text-muted) !important; }
        .bg-primary-light { background-color: var(--primary-light) !important; }

        /* ===== Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.97);
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-nav);
            background: rgba(255, 255, 255, 0.98);
        }
        .header-brand-row {
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .brand-logo {
            font-family: var(--font-heading);
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .brand-logo .brand-icon {
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 4px 12px;
            gap: 6px;
            min-width: 200px;
            transition: var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--primary);
            background: var(--surface);
            box-shadow: 0 0 0 3px rgba(46, 109, 155, 0.1);
        }
        .search-box i {
            color: var(--text-muted);
            font-size: 13px;
        }
        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 13px;
            color: var(--text);
            width: 100%;
            padding: 4px 0;
        }
        .trend-tag {
            font-size: 12px;
            color: var(--primary);
            background: var(--primary-light);
            padding: 4px 10px;
            border-radius: 999px;
            white-space: nowrap;
            font-weight: 500;
            transition: var(--transition);
        }
        .trend-tag:hover {
            background: #d5e4f0;
            color: var(--primary-dark);
        }
        .header-nav-row {
            height: 40px;
            display: flex;
            align-items: center;
            gap: 4px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .header-nav-row::-webkit-scrollbar { display: none; }
        .header-nav-row .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 6px 14px;
            border-radius: 6px;
            white-space: nowrap;
            transition: var(--transition);
            position: relative;
        }
        .header-nav-row .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .header-nav-row .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .header-nav-row .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 1px;
        }
        .navbar-toggler-custom {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: 6px;
            padding: 6px 10px;
            color: var(--text);
            font-size: 18px;
            cursor: pointer;
            transition: var(--transition);
        }
        .navbar-toggler-custom:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-section {
            padding: 16px 0 0;
            background: transparent;
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .breadcrumb-nav a {
            color: var(--text-muted);
        }
        .breadcrumb-nav a:hover { color: var(--primary); }
        .breadcrumb-nav .sep { color: var(--border); }
        .breadcrumb-nav .current { color: var(--primary); font-weight: 500; }

        /* ===== Category Banner ===== */
        .category-banner {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: #fff;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            margin-top: 16px;
            min-height: 320px;
            display: flex;
            align-items: stretch;
        }
        .category-banner .banner-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            z-index: 0;
        }
        .category-banner .banner-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(46,109,155,0.06) 0%, rgba(255,255,255,0.88) 55%, rgba(234,241,247,0.92) 100%);
            z-index: 1;
        }
        .category-banner .banner-inner {
            position: relative;
            z-index: 2;
            display: flex;
            flex-direction: column;
            justify-content: center;
            padding: 40px 40px;
            width: 100%;
        }
        .category-banner .banner-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 16px;
            width: fit-content;
            letter-spacing: 1px;
        }
        .category-banner h1 {
            margin-bottom: 12px;
        }
        .category-banner .banner-desc {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 560px;
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .category-banner .banner-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .category-banner .banner-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .category-banner .banner-meta i { color: var(--primary); font-size: 14px; }

        /* Banner right - group buy card */
        .banner-group-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 24px 20px;
            max-width: 300px;
            width: 100%;
            align-self: center;
            margin-left: auto;
            margin-right: 20px;
            position: relative;
            z-index: 2;
        }
        .banner-group-card .group-card-title {
            font-weight: 700;
            font-size: 17px;
            color: var(--text);
            margin-bottom: 4px;
            font-family: var(--font-heading);
        }
        .banner-group-card .group-card-sub {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .group-progress-wrap {
            margin-bottom: 12px;
        }
        .group-progress-label {
            display: flex;
            justify-content: space-between;
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 6px;
        }
        .group-progress-bar {
            height: 6px;
            background: var(--bg);
            border-radius: 999px;
            overflow: hidden;
        }
        .group-progress-bar .fill {
            height: 100%;
            background: var(--primary);
            border-radius: 999px;
            width: 72%;
            transition: var(--transition);
        }
        .group-card-actions {
            display: flex;
            gap: 10px;
            margin-top: 16px;
        }

        /* ===== Buttons ===== */
        .btn-primary-brand {
            background: var(--primary);
            color: #fff;
            border: 1px solid var(--primary);
            border-radius: var(--radius-sm);
            padding: 10px 22px;
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            cursor: pointer;
            text-align: center;
            justify-content: center;
        }
        .btn-primary-brand:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
        }
        .btn-primary-brand:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(46, 109, 155, 0.25);
        }
        .btn-secondary-brand {
            background: #fff;
            color: var(--primary);
            border: 1px solid var(--primary);
            border-radius: var(--radius-sm);
            padding: 10px 22px;
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            cursor: pointer;
            text-align: center;
            justify-content: center;
        }
        .btn-secondary-brand:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
        }
        .btn-secondary-brand:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(46, 109, 155, 0.15);
        }
        .btn-sm-brand {
            padding: 6px 16px;
            font-size: 13px;
            border-radius: 6px;
        }

        /* ===== Section spacing ===== */
        .section-pad {
            padding: 48px 0;
        }
        .section-head {
            margin-bottom: 28px;
        }
        .section-head h2 {
            margin-bottom: 8px;
        }
        .section-head p {
            max-width: 640px;
            font-size: 15px;
        }
        .section-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 3px 12px;
            border-radius: 999px;
            margin-bottom: 10px;
            letter-spacing: 1px;
        }

        /* ===== Benefits cards (irregular grid) ===== */
        .benefit-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .benefit-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .benefit-card .card-img {
            overflow: hidden;
            border-radius: var(--radius-md) var(--radius-md) 0 0;
            aspect-ratio: 4/3;
            position: relative;
        }
        .benefit-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s ease;
        }
        .benefit-card:hover .card-img img { transform: scale(1.02); }
        .benefit-card .card-num {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(255,255,255,0.92);
            border: 1px solid var(--border);
            border-radius: 6px;
            padding: 2px 10px;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
        }
        .benefit-card .card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .benefit-card .card-body h3 {
            font-size: 18px;
            margin-bottom: 8px;
        }
        .benefit-card .card-body p {
            font-size: 14px;
            line-height: 1.7;
            flex: 1;
            margin-bottom: 12px;
        }
        .benefit-card .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .benefit-card .card-tags span {
            font-size: 11px;
            padding: 3px 10px;
            border-radius: 999px;
            background: var(--bg);
            color: var(--text-muted);
            border: 1px solid var(--border);
        }
        .benefit-card .card-tags span.highlight {
            background: #fdf3e7;
            color: var(--accent);
            border-color: #e8d5c0;
        }

        /* Alternating rows for irregular grid */
        .benefit-row-1 .col-lg-6:first-child .benefit-card,
        .benefit-row-1 .col-lg-3:first-child .benefit-card {
            border-left: 3px solid var(--primary);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
        }

        /* ===== Scenario alternating ===== */
        .scenario-block {
            display: flex;
            align-items: center;
            gap: 32px;
            margin-bottom: 40px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            transition: var(--transition);
        }
        .scenario-block:hover {
            box-shadow: var(--shadow-md);
        }
        .scenario-block.reverse {
            flex-direction: row-reverse;
        }
        .scenario-img {
            flex: 0 0 45%;
            border-radius: var(--radius-md);
            overflow: hidden;
            aspect-ratio: 3/2;
        }
        .scenario-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s ease;
        }
        .scenario-block:hover .scenario-img img { transform: scale(1.02); }
        .scenario-content {
            flex: 1;
        }
        .scenario-content .scenario-step {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 3px 10px;
            border-radius: 999px;
            margin-bottom: 10px;
        }
        .scenario-content h3 {
            font-size: 20px;
            margin-bottom: 10px;
        }
        .scenario-content p {
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== Process steps ===== */
        .process-flow {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            justify-content: space-between;
        }
        .process-step {
            flex: 1 1 180px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 24px 20px;
            text-align: center;
            transition: var(--transition);
            position: relative;
        }
        .process-step:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .process-step .step-num {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 700;
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 12px;
        }
        .process-step h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .process-step p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .process-step::after {
            content: '';
            position: absolute;
            top: 50%;
            right: -16px;
            transform: translateY(-50%);
            width: 16px;
            height: 1px;
            background: var(--border);
        }
        .process-step:last-child::after { display: none; }

        /* ===== Benefit list cards (horizontal) ===== */
        .benefit-list-toolbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 20px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 12px 16px;
        }
        .filter-tags {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
            align-items: center;
        }
        .filter-tags span.label {
            font-size: 13px;
            color: var(--text-muted);
            margin-right: 4px;
        }
        .filter-tag {
            font-size: 12px;
            padding: 4px 12px;
            border-radius: 999px;
            border: 1px solid var(--border);
            color: var(--text-secondary);
            background: #fff;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        .filter-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }
        .filter-tag.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .sort-dropdown {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
            cursor: pointer;
            padding: 4px 12px;
            border: 1px solid var(--border);
            border-radius: 6px;
            background: #fff;
            transition: var(--transition);
        }
        .sort-dropdown:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .benefit-list-card {
            display: flex;
            gap: 20px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 16px;
            margin-bottom: 16px;
            transition: var(--transition);
        }
        .benefit-list-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .benefit-list-card .list-img {
            flex: 0 0 220px;
            aspect-ratio: 3/2;
            border-radius: var(--radius-sm);
            overflow: hidden;
        }
        .benefit-list-card .list-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s ease;
        }
        .benefit-list-card:hover .list-img img { transform: scale(1.02); }
        .benefit-list-card .list-content {
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .benefit-list-card .list-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
            font-family: var(--font-heading);
        }
        .benefit-list-card .list-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 10px;
        }
        .benefit-list-card .list-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
        }
        .benefit-list-card .list-meta span {
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .benefit-list-card .list-meta i { color: var(--primary); font-size: 13px; }

        /* ===== Pagination ===== */
        .pagination-wrapper {
            display: flex;
            justify-content: center;
            margin-top: 24px;
            gap: 6px;
        }
        .pagination-wrapper .page-btn {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--border);
            border-radius: 6px;
            font-size: 14px;
            color: var(--text-secondary);
            background: #fff;
            cursor: pointer;
            transition: var(--transition);
        }
        .pagination-wrapper .page-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .pagination-wrapper .page-btn.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .pagination-wrapper .page-btn.disabled {
            opacity: 0.5;
            pointer-events: none;
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            margin-bottom: 12px;
            overflow: hidden;
        }
        .faq-item .faq-question {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 16px 20px;
            cursor: pointer;
            font-weight: 600;
            font-size: 15px;
            color: var(--text);
            transition: var(--transition);
            user-select: none;
        }
        .faq-item .faq-question:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .faq-item .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .faq-item .faq-question .faq-toggle {
            margin-left: auto;
            font-size: 14px;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .faq-item.open .faq-toggle { transform: rotate(180deg); }
        .faq-item .faq-answer {
            display: none;
            padding: 0 20px 20px 60px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .faq-item.open .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary);
            border-radius: var(--radius-lg);
            padding: 40px 32px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }
        .cta-section .cta-inner {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 20px;
        }
        .cta-section h2 {
            color: #fff;
            margin-bottom: 8px;
            font-size: 26px;
        }
        .cta-section p {
            color: rgba(255,255,255,0.85);
            margin-bottom: 0;
            font-size: 15px;
        }
        .cta-section .btn-white-outline {
            background: #fff;
            color: var(--primary);
            border: none;
            border-radius: var(--radius-sm);
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition);
            cursor: pointer;
            white-space: nowrap;
        }
        .cta-section .btn-white-outline:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(0,0,0,0.12);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #fff;
            border-top: 1px solid var(--border);
            padding: 48px 0 0;
            margin-top: 48px;
        }
        .footer-brand {
            font-family: var(--font-heading);
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .footer-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 12px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            font-size: 13px;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 16px 0;
            margin-top: 32px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 8px;
            font-size: 12px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
            font-size: 12px;
        }
        .footer-bottom a:hover { color: var(--primary); }

        /* ===== Responsive ===== */
        @media (max-width: 991px) {
            .navbar-toggler-custom { display: block; }
            .header-nav-row {
                display: none;
                flex-direction: column;
                align-items: stretch;
                height: auto;
                padding: 8px 0;
                gap: 2px;
            }
            .header-nav-row.open {
                display: flex;
            }
            .header-nav-row .nav-link {
                padding: 10px 16px;
                border-radius: 6px;
            }
            .header-nav-row .nav-link.active::after { display: none; }
            .banner-group-card {
                margin: 0 auto 20px;
                max-width: 100%;
            }
            .category-banner .banner-inner {
                padding: 28px 24px;
            }
            .banner-group-card {
                order: 2;
            }
            .category-banner .banner-meta {
                order: 1;
            }
            .scenario-block,
            .scenario-block.reverse {
                flex-direction: column;
                gap: 16px;
            }
            .scenario-img {
                flex: 0 0 auto;
                width: 100%;
            }
        }
        @media (max-width: 767px) {
            h1 { font-size: 26px; }
            h2 { font-size: 22px; }
            .section-pad { padding: 32px 0; }
            .container { padding-left: 16px; padding-right: 16px; }
            .search-box { min-width: 140px; }
            .trend-tag { display: none; }
            .benefit-list-card {
                flex-direction: column;
                gap: 12px;
            }
            .benefit-list-card .list-img {
                flex: 0 0 auto;
                width: 100%;
                aspect-ratio: 16/9;
            }
            .process-step::after { display: none; }
            .process-flow { gap: 10px; }
            .process-step { flex: 1 1 140px; padding: 16px 14px; }
            .cta-section .cta-inner {
                flex-direction: column;
                text-align: center;
            }
            .cta-section h2 { font-size: 22px; }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 4px;
            }
            .category-banner { min-height: auto; }
        }
        @media (max-width: 575px) {
            h1 { font-size: 22px; }
            h2 { font-size: 19px; }
            .header-brand-row { gap: 8px; }
            .search-box { min-width: 110px; padding: 4px 8px; }
            .brand-logo { font-size: 17px; }
            .banner-group-card { padding: 16px 14px; }
            .filter-tags { gap: 4px; }
            .filter-tag { font-size: 11px; padding: 3px 8px; }
            .section-pad { padding: 24px 0; }
            .process-flow { flex-direction: column; }
            .process-step { flex: 1 1 auto; }
        }

        /* Custom Bootstrap overrides */
        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(46, 109, 155, 0.1);
        }
        .btn:focus {
            box-shadow: none;
        }
        .accordion-button:focus {
            box-shadow: none;
            border-color: var(--border);
        }
        .accordion-button:not(.collapsed) {
            background-color: var(--primary-light);
            color: var(--primary);
        }
        .accordion-button:not(.collapsed)::after {
            filter: invert(35%) sepia(40%) saturate(600%) hue-rotate(165deg);
        }

/* roulang page: category5 */
:root {
            --primary: #2E6D9B;
            --primary-dark: #1F5A82;
            --primary-light: #EAF1F7;
            --accent: #C07A3E;
            --bg: #F7F9FC;
            --surface: #FFFFFF;
            --text: #1F2A36;
            --text-secondary: #4A5A68;
            --text-muted: #7A8A98;
            --border: #D9E2EC;
            --radius-sm: 8px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 8px rgba(31, 42, 54, 0.04);
            --shadow-md: 0 8px 24px rgba(31, 42, 54, 0.06);
            --shadow-lg: 0 12px 28px rgba(31, 42, 54, 0.10);
            --shadow-nav: 0 2px 12px rgba(31, 42, 54, 0.08);
            --transition: all 0.25s ease;
            --font-heading: 'Alibaba PuHuiTi', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
        }

        body {
            font-family: var(--font-body);
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.8;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }

        a:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }

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

        .container {
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.97);
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-nav);
            background: rgba(255, 255, 255, 0.98);
        }

        .header-brand-row {
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .brand-logo {
            font-family: var(--font-heading);
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .brand-logo .brand-icon {
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
        }

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

        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 4px 12px;
            gap: 6px;
            min-width: 200px;
            transition: var(--transition);
        }

        .search-box:focus-within {
            border-color: var(--primary);
            background: var(--surface);
            box-shadow: 0 0 0 3px rgba(46, 109, 155, 0.1);
        }

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

        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 13px;
            color: var(--text);
            width: 100%;
            padding: 4px 0;
        }

        .trend-tag {
            font-size: 12px;
            color: var(--primary);
            background: var(--primary-light);
            padding: 4px 10px;
            border-radius: 999px;
            white-space: nowrap;
            font-weight: 500;
            transition: var(--transition);
        }

        .trend-tag:hover {
            background: #d5e4f0;
            color: var(--primary-dark);
        }

        .header-nav-row {
            height: 40px;
            display: flex;
            align-items: center;
            gap: 4px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }

        .header-nav-row::-webkit-scrollbar {
            display: none;
        }

        .header-nav-row .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 6px 14px;
            border-radius: 6px;
            white-space: nowrap;
            transition: var(--transition);
            position: relative;
        }

        .header-nav-row .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .header-nav-row .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }

        .header-nav-row .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 1px;
        }

        .navbar-toggler-custom {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: 6px;
            padding: 6px 10px;
            color: var(--text);
            font-size: 18px;
            cursor: pointer;
            transition: var(--transition);
        }

        .navbar-toggler-custom:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        /* ===== Category Banner ===== */
        .category-banner {
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            padding: 64px 0;
            position: relative;
            overflow: hidden;
            margin-bottom: 48px;
        }

        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.92) 0%, rgba(234, 241, 247, 0.88) 100%);
            z-index: 1;
        }

        .banner-content {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 24px;
        }

        .banner-left {
            flex: 0 0 auto;
            max-width: 420px;
        }

        .banner-left .banner-eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 2px;
            margin-bottom: 8px;
            text-transform: uppercase;
        }

        .banner-left h1 {
            font-family: var(--font-heading);
            font-size: 34px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .banner-left h1 .highlight {
            color: var(--primary);
        }

        .banner-right {
            flex: 1 1 320px;
            max-width: 480px;
            background: rgba(255, 255, 255, 0.85);
            padding: 20px 24px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }

        .banner-right p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* ===== Section shared ===== */
        .section-block {
            padding: 48px 0;
        }

        .section-block-alt {
            background: var(--surface);
            padding: 48px 0;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .section-heading {
            margin-bottom: 32px;
        }

        .section-heading .section-eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 1.5px;
            margin-bottom: 6px;
            text-transform: uppercase;
        }

        .section-heading h2 {
            font-family: var(--font-heading);
            font-size: 28px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.35;
        }

        .section-heading p {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.8;
        }

        /* ===== Feature Cards ===== */
        .feature-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px;
            height: 100%;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--primary);
            opacity: 0;
            transition: var(--transition);
        }

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

        .feature-card:hover::before {
            opacity: 1;
        }

        .feature-card .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 16px;
        }

        .feature-card h3 {
            font-family: var(--font-heading);
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
        }

        .feature-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .feature-number {
            position: absolute;
            top: 16px;
            right: 20px;
            font-size: 42px;
            font-weight: 700;
            color: var(--primary-light);
            font-family: var(--font-heading);
            line-height: 1;
            pointer-events: none;
        }

        /* ===== Security metric ===== */
        .security-metric-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            text-align: center;
            height: 100%;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        .security-metric-card .metric-value {
            font-family: var(--font-heading);
            font-size: 38px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .security-metric-card .metric-label {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* ===== Process timeline ===== */
        .process-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .process-item {
            display: flex;
            gap: 16px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .process-item:hover {
            box-shadow: var(--shadow-md);
            border-color: #c5d5e5;
        }

        .process-step-number {
            flex: 0 0 36px;
            height: 36px;
            width: 36px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            font-weight: 700;
            font-family: var(--font-heading);
            margin-top: 2px;
        }

        .process-content h3 {
            font-family: var(--font-heading);
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 4px;
        }

        .process-content p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== Scenario cards ===== */
        .scenario-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px;
            height: 100%;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .scenario-card .scenario-tag {
            display: inline-block;
            font-size: 12px;
            color: var(--accent);
            background: #fdf3e8;
            padding: 2px 10px;
            border-radius: 999px;
            font-weight: 500;
            margin-bottom: 12px;
            align-self: flex-start;
        }

        .scenario-card h3 {
            font-family: var(--font-heading);
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
        }

        .scenario-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
            flex: 1;
        }

        .scenario-card .scenario-img {
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin-top: 16px;
            aspect-ratio: 16/9;
        }

        .scenario-card .scenario-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .scenario-card:hover .scenario-img img {
            transform: scale(1.02);
        }

        /* ===== FAQ ===== */
        .faq-accordion .accordion-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md) !important;
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

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

        .faq-accordion .accordion-button {
            background: var(--surface);
            color: var(--text);
            font-weight: 600;
            font-size: 15px;
            padding: 16px 20px;
            border: none;
            box-shadow: none;
            position: relative;
            font-family: var(--font-heading);
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            background: var(--surface);
            color: var(--primary);
            box-shadow: none;
        }

        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            border-color: transparent;
        }

        .faq-accordion .accordion-button::after {
            display: none;
        }

        .faq-accordion .faq-icon {
            position: absolute;
            right: 20px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 14px;
            transition: var(--transition);
        }

        .faq-accordion .accordion-button:not(.collapsed) .faq-icon {
            color: var(--primary);
            transform: translateY(-50%) rotate(180deg);
        }

        .faq-accordion .accordion-body {
            padding: 0 20px 18px 20px;
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.8;
        }

        .faq-number {
            display: inline-block;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-right: 10px;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: var(--primary);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -40px;
            width: 260px;
            height: 260px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section h2 {
            font-family: var(--font-heading);
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            position: relative;
            z-index: 1;
        }

        .cta-section p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
        }

        .btn-cta-primary {
            background: #fff;
            color: var(--primary);
            border: none;
            border-radius: var(--radius-sm);
            padding: 10px 28px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition);
            position: relative;
            z-index: 1;
        }

        .btn-cta-primary:hover {
            background: #f0f4f8;
            color: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .btn-cta-secondary {
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.5);
            border-radius: var(--radius-sm);
            padding: 10px 24px;
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
            z-index: 1;
        }

        .btn-cta-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            border-color: #fff;
            transform: translateY(-1px);
        }

        /* ===== Buttons shared ===== */
        .btn-primary-custom {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            padding: 10px 24px;
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
        }

        .btn-primary-custom:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .btn-outline-custom {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
            border-radius: var(--radius-sm);
            padding: 10px 24px;
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
        }

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

        /* ===== Footer ===== */
        .site-footer {
            background: #1b2a38;
            color: #b8c6d4;
            padding: 48px 0 24px;
            margin-top: 48px;
        }

        .site-footer .footer-brand {
            font-family: var(--font-heading);
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }

        .site-footer .footer-desc {
            font-size: 14px;
            color: #9aabba;
            line-height: 1.8;
            max-width: 320px;
        }

        .site-footer .footer-title {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .site-footer .footer-links li {
            margin-bottom: 8px;
        }

        .site-footer .footer-links a {
            color: #9aabba;
            font-size: 14px;
            transition: var(--transition);
        }

        .site-footer .footer-links a:hover {
            color: #fff;
            text-decoration: none;
        }

        .site-footer .footer-links i {
            margin-right: 6px;
            color: #5c9bc0;
            width: 16px;
            text-align: center;
        }

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 32px;
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 8px 16px;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: #7a8a98;
        }

        .site-footer .footer-bottom a {
            color: #7a8a98;
            transition: var(--transition);
        }

        .site-footer .footer-bottom a:hover {
            color: #fff;
        }

        /* ===== Responsive ===== */
        @media (max-width: 991px) {
            .navbar-toggler-custom {
                display: block;
            }

            .header-nav-row {
                display: none;
                height: auto;
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: 8px 0;
            }

            .header-nav-row.show {
                display: flex;
            }

            .header-nav-row .nav-link {
                padding: 12px 16px;
                font-size: 15px;
            }

            .header-nav-row .nav-link.active::after {
                display: none;
            }

            .search-box {
                min-width: 140px;
            }

            .trend-tag {
                display: none;
            }

            .banner-content {
                flex-direction: column;
                align-items: flex-start;
            }

            .banner-left {
                max-width: 100%;
            }

            .banner-right {
                max-width: 100%;
                flex: 1 1 auto;
            }

            .banner-left h1 {
                font-size: 28px;
            }

            .category-banner {
                padding: 40px 0;
            }

            .section-block,
            .section-block-alt {
                padding: 36px 0;
            }

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

            .cta-section {
                padding: 36px 24px;
            }

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

        @media (max-width: 576px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .brand-logo {
                font-size: 18px;
            }

            .search-box {
                display: none;
            }

            .header-actions {
                gap: 6px;
            }

            .banner-left h1 {
                font-size: 24px;
            }

            .category-banner {
                padding: 32px 0;
            }

            .banner-right {
                padding: 16px;
            }

            .banner-right p {
                font-size: 14px;
            }

            .feature-card {
                padding: 18px;
            }

            .feature-number {
                font-size: 32px;
                top: 12px;
                right: 14px;
            }

            .security-metric-card .metric-value {
                font-size: 30px;
            }

            .process-item {
                padding: 16px;
                flex-direction: column;
                gap: 10px;
            }

            .cta-section {
                padding: 28px 20px;
                border-radius: var(--radius-md);
            }

            .cta-section h2 {
                font-size: 20px;
            }

            .site-footer {
                padding: 36px 0 20px;
            }

            .site-footer .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
            }
        }

/* roulang page: category6 */
:root {
            --primary: #2E6D9B;
            --primary-dark: #1F5A82;
            --primary-light: #EAF1F7;
            --accent: #C07A3E;
            --bg: #F7F9FC;
            --surface: #FFFFFF;
            --text: #1F2A36;
            --text-secondary: #4A5A68;
            --text-muted: #7A8A98;
            --border: #D9E2EC;
            --radius-sm: 8px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 8px rgba(31, 42, 54, 0.04);
            --shadow-md: 0 8px 24px rgba(31, 42, 54, 0.06);
            --shadow-lg: 0 12px 28px rgba(31, 42, 54, 0.10);
            --shadow-nav: 0 2px 12px rgba(31, 42, 54, 0.08);
            --transition: all 0.25s ease;
            --font-heading: 'Alibaba PuHuiTi', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
        }

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

        body {
            font-family: var(--font-body);
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.8;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            padding-left: 24px;
            padding-right: 24px;
        }
        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-heading);
            color: var(--text);
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 0.5rem;
        }
        h1 {
            font-size: 36px;
            font-weight: 700;
        }
        h2 {
            font-size: 28px;
            font-weight: 600;
        }
        h3 {
            font-size: 19px;
            font-weight: 600;
        }
        p {
            margin-bottom: 0.5rem;
        }
        button, input, textarea, select {
            font-family: var(--font-body);
        }
        button:focus, input:focus, textarea:focus, select:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(46, 109, 155, 0.15);
        }
        .btn:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(46, 109, 155, 0.2);
        }

        /* ===== Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.97);
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-nav);
            background: rgba(255, 255, 255, 0.98);
        }
        .header-brand-row {
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .brand-logo {
            font-family: var(--font-heading);
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .brand-logo .brand-icon {
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 4px 12px;
            gap: 6px;
            min-width: 200px;
            transition: var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--primary);
            background: var(--surface);
            box-shadow: 0 0 0 3px rgba(46, 109, 155, 0.1);
        }
        .search-box i {
            color: var(--text-muted);
            font-size: 13px;
        }
        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 13px;
            color: var(--text);
            width: 100%;
            padding: 4px 0;
        }
        .trend-tag {
            font-size: 12px;
            color: var(--primary);
            background: var(--primary-light);
            padding: 4px 10px;
            border-radius: 999px;
            white-space: nowrap;
            font-weight: 500;
            transition: var(--transition);
        }
        .trend-tag:hover {
            background: #d5e4f0;
            color: var(--primary-dark);
        }
        .navbar-toggler-custom {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: 6px;
            padding: 6px 10px;
            color: var(--text);
            font-size: 18px;
            cursor: pointer;
            transition: var(--transition);
        }
        .navbar-toggler-custom:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .header-nav-row {
            height: 40px;
            display: flex;
            align-items: center;
            gap: 4px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .header-nav-row::-webkit-scrollbar {
            display: none;
        }
        .header-nav-row .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 6px 14px;
            border-radius: 6px;
            white-space: nowrap;
            transition: var(--transition);
            position: relative;
        }
        .header-nav-row .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .header-nav-row .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .header-nav-row .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 1px;
        }

        /* ===== Category Banner ===== */
        .category-banner {
            background: var(--primary-light);
            border-bottom: 1px solid var(--border);
            padding: 36px 0;
            position: relative;
            overflow: hidden;
        }
        .category-banner::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 55%;
            height: 100%;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            pointer-events: none;
        }
        .category-banner .banner-content {
            position: relative;
            z-index: 1;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 24px;
        }
        .category-banner .banner-title {
            flex: 0 0 auto;
            min-width: 220px;
        }
        .category-banner .banner-title h1 {
            font-size: 32px;
            line-height: 1.3;
            margin-bottom: 4px;
            color: var(--primary-dark);
        }
        .category-banner .banner-title .badge-channel {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            color: var(--primary);
            background: rgba(46, 109, 155, 0.12);
            padding: 3px 10px;
            border-radius: 999px;
            margin-bottom: 8px;
        }
        .category-banner .banner-desc {
            flex: 1;
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 600px;
            line-height: 1.8;
        }
        .category-banner .banner-desc strong {
            color: var(--text);
            font-weight: 600;
        }

        /* ===== Section common ===== */
        .section-padding {
            padding: 64px 0;
        }
        .section-title {
            font-size: 28px;
            margin-bottom: 8px;
        }
        .section-subtitle {
            color: var(--text-secondary);
            font-size: 15px;
            max-width: 700px;
            margin-bottom: 32px;
        }
        .section-head {
            margin-bottom: 32px;
        }
        .section-head .tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            background: rgba(192, 122, 62, 0.1);
            padding: 4px 12px;
            border-radius: 999px;
            margin-bottom: 8px;
            letter-spacing: 0.5px;
        }

        /* ===== Function cards ===== */
        .function-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            height: 100%;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .function-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: rgba(46, 109, 155, 0.25);
        }
        .function-card .card-number {
            font-family: var(--font-heading);
            font-size: 14px;
            font-weight: 700;
            color: var(--primary);
            background: var(--primary-light);
            width: 32px;
            height: 32px;
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 12px;
        }
        .function-card .card-icon {
            font-size: 20px;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .function-card h3 {
            font-size: 18px;
            margin-bottom: 8px;
        }
        .function-card p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 0;
        }
        .function-card .card-img {
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin-bottom: 14px;
            aspect-ratio: 16/9;
            background: var(--bg);
        }
        .function-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .function-card:hover .card-img img {
            transform: scale(1.02);
        }
        .function-card .card-tag {
            display: inline-block;
            font-size: 11px;
            font-weight: 500;
            color: var(--accent);
            background: rgba(192, 122, 62, 0.08);
            padding: 2px 8px;
            border-radius: 999px;
            margin-bottom: 10px;
        }
        .function-card .card-meta {
            font-size: 12px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-top: 10px;
        }
        .function-card .card-meta i {
            color: var(--accent);
            font-size: 11px;
        }

        /* ===== Process steps ===== */
        .process-step {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 28px 24px;
            height: 100%;
            transition: var(--transition);
            position: relative;
        }
        .process-step:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .process-step .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            font-family: var(--font-heading);
            margin-bottom: 14px;
        }
        .process-step h3 {
            font-size: 17px;
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* ===== Scenario ===== */
        .scenario-row {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            margin-bottom: 20px;
            display: flex;
            flex-wrap: wrap;
            transition: var(--transition);
        }
        .scenario-row:hover {
            box-shadow: var(--shadow-md);
        }
        .scenario-row .scenario-img {
            flex: 0 0 280px;
            overflow: hidden;
            background: var(--bg);
            min-height: 180px;
        }
        .scenario-row .scenario-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .scenario-row:hover .scenario-img img {
            transform: scale(1.02);
        }
        .scenario-row .scenario-body {
            flex: 1;
            padding: 24px 28px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .scenario-row .scenario-body .step-label {
            font-size: 11px;
            font-weight: 600;
            color: var(--accent);
            background: rgba(192, 122, 62, 0.08);
            display: inline-block;
            padding: 2px 8px;
            border-radius: 999px;
            width: fit-content;
            margin-bottom: 8px;
        }
        .scenario-row .scenario-body h3 {
            font-size: 18px;
            margin-bottom: 8px;
        }
        .scenario-row .scenario-body p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* ===== Data stats ===== */
        .stats-section {
            background: var(--primary-dark);
            border-radius: var(--radius-lg);
            padding: 40px 32px;
            color: #fff;
        }
        .stats-section .stat-item {
            text-align: center;
            padding: 12px;
        }
        .stats-section .stat-num {
            font-family: var(--font-heading);
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
        }
        .stats-section .stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.75);
            margin-top: 4px;
        }
        .stats-section .stat-desc {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.55);
            margin-top: 2px;
        }

        /* ===== FAQ ===== */
        .accordion-custom .accordion-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            margin-bottom: 12px;
            overflow: hidden;
            border: 1px solid var(--border) !important;
        }
        .accordion-custom .accordion-button {
            background: var(--surface);
            color: var(--text);
            font-weight: 600;
            font-size: 15px;
            padding: 16px 20px;
            border: none;
            border-radius: 0;
            box-shadow: none;
            transition: var(--transition);
        }
        .accordion-custom .accordion-button:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            background: var(--primary-light);
            color: var(--primary-dark);
            box-shadow: none;
            border-bottom: 1px solid var(--border);
            border-radius: 0;
        }
        .accordion-custom .accordion-button:focus {
            box-shadow: none;
            outline: none;
        }
        .accordion-custom .accordion-button::after {
            filter: invert(40%) sepia(20%) saturate(600%) hue-rotate(170deg);
        }
        .accordion-custom .accordion-body {
            padding: 16px 20px;
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.8;
        }
        .accordion-custom .accordion-body p {
            margin-bottom: 0;
        }
        .faq-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 26px;
            height: 26px;
            border-radius: 6px;
            background: var(--primary);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            margin-right: 10px;
            flex-shrink: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary-light);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            border: 1px solid rgba(46, 109, 155, 0.15);
            text-align: center;
        }
        .cta-section h2 {
            color: var(--primary-dark);
            font-size: 26px;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: var(--text-secondary);
            max-width: 620px;
            margin: 0 auto 24px;
            font-size: 15px;
        }

        /* ===== Buttons ===== */
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            border: 1px solid var(--primary);
            border-radius: var(--radius-sm);
            padding: 10px 24px;
            font-size: 15px;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            white-space: nowrap;
        }
        .btn-primary-custom:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            text-decoration: none;
        }
        .btn-primary-custom:active {
            background: #1a4b6d;
            border-color: #1a4b6d;
            color: #fff;
        }
        .btn-primary-custom:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(46, 109, 155, 0.25);
            color: #fff;
        }
        .btn-secondary-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
            border-radius: var(--radius-sm);
            padding: 10px 24px;
            font-size: 15px;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            white-space: nowrap;
        }
        .btn-secondary-custom:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
            text-decoration: none;
        }
        .btn-secondary-custom:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(46, 109, 155, 0.2);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--surface);
            border-top: 1px solid var(--border);
            padding: 48px 0 32px;
            margin-top: 0;
        }
        .footer-brand {
            font-family: var(--font-heading);
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .footer-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 300px;
        }
        .footer-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 14px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            color: var(--text-secondary);
            font-size: 13px;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-links a:hover {
            color: var(--primary-dark);
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 20px;
            margin-top: 32px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
            font-size: 12px;
        }
        .footer-bottom a:hover {
            color: var(--primary-dark);
        }

        /* ===== Responsive ===== */
        @media (max-width: 991.98px) {
            .navbar-toggler-custom {
                display: block;
            }
            .header-nav-row {
                position: absolute;
                top: 56px;
                left: 0;
                width: 100%;
                height: auto;
                max-height: 0;
                overflow: hidden;
                flex-direction: column;
                align-items: flex-start;
                background: var(--surface);
                box-shadow: var(--shadow-md);
                padding: 0 16px;
                transition: max-height 0.35s ease, padding 0.35s ease;
                gap: 0;
                z-index: 1045;
            }
            .header-nav-row.show {
                max-height: 400px;
                padding: 8px 16px;
                overflow-y: auto;
            }
            .header-nav-row .nav-link {
                width: 100%;
                padding: 10px 12px;
                border-radius: 6px;
                font-size: 15px;
            }
            .header-nav-row .nav-link.active::after {
                display: none;
            }
            .search-box {
                min-width: 140px;
            }
            .trend-tag {
                display: none;
            }
            .category-banner .banner-title {
                min-width: 100%;
            }
            .category-banner .banner-title h1 {
                font-size: 26px;
            }
            .section-padding {
                padding: 48px 0;
            }
            .scenario-row .scenario-img {
                flex: 0 0 100%;
                min-height: 200px;
            }
            .stats-section .stat-num {
                font-size: 24px;
            }
            h1 {
                font-size: 30px;
            }
            h2 {
                font-size: 24px;
            }
        }

        @media (max-width: 767.98px) {
            body {
                font-size: 14px;
            }
            h1 {
                font-size: 26px;
            }
            h2 {
                font-size: 21px;
            }
            h3 {
                font-size: 17px;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .brand-logo {
                font-size: 17px;
            }
            .header-brand-row {
                height: 50px;
            }
            .search-box {
                min-width: 100px;
                padding: 2px 8px;
            }
            .search-box input {
                font-size: 12px;
            }
            .category-banner {
                padding: 24px 0;
            }
            .category-banner .banner-title h1 {
                font-size: 22px;
            }
            .category-banner .banner-desc {
                font-size: 14px;
            }
            .section-padding {
                padding: 40px 0;
            }
            .section-title {
                font-size: 22px;
            }
            .section-subtitle {
                font-size: 14px;
            }
            .function-card {
                padding: 18px;
            }
            .process-step {
                padding: 20px 16px;
            }
            .scenario-row .scenario-body {
                padding: 18px 16px;
            }
            .cta-section {
                padding: 32px 20px;
            }
            .cta-section h2 {
                font-size: 22px;
            }
            .stats-section {
                padding: 28px 16px;
            }
            .stats-section .stat-num {
                font-size: 21px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 4px;
                text-align: center;
                justify-content: center;
            }
            .accordion-custom .accordion-button {
                font-size: 14px;
                padding: 13px 16px;
            }
            .accordion-custom .accordion-body {
                font-size: 13px;
                padding: 12px 16px;
            }
        }

        @media (max-width: 575.98px) {
            .search-box {
                display: none;
            }
            .header-brand-row {
                gap: 8px;
            }
            .navbar-toggler-custom {
                display: block;
            }
            .header-nav-row.show {
                max-height: 380px;
            }
            .function-card .card-img {
                aspect-ratio: 16/9;
            }
            .scenario-row .scenario-img {
                min-height: 160px;
            }
            .btn-primary-custom,
            .btn-secondary-custom {
                padding: 8px 18px;
                font-size: 14px;
                width: 100%;
                justify-content: center;
            }
        }