/* roulang page: index */
:root {
            --color-primary: #0A66C2;
            --color-primary-dark: #084A8A;
            --color-primary-light: #E8F0FE;
            --color-accent: #F59E0B;
            --color-accent-dark: #D97706;
            --color-bg: #F8FAFC;
            --color-card: #FFFFFF;
            --color-text: #1E293B;
            --color-text-secondary: #64748B;
            --color-border: #CBD5E1;
            --color-footer-bg: #1E293B;
            --color-footer-text: #CBD5E1;
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 6px;
            --shadow-card: 0 1px 3px rgba(0,0,0,0.06), 0 4px 16px rgba(0,0,0,0.05);
            --shadow-hover: 0 8px 30px rgba(10,102,194,0.12);
            --transition: 0.25s ease;
            --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            background: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        button {
            font-family: inherit;
            border: none;
            cursor: pointer;
            background: none;
        }

        input,
        select,
        textarea {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .section {
            padding: 80px 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-header h2 {
            font-size: 34px;
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.2;
            margin-bottom: 8px;
        }

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

        .section-header .header-line {
            width: 48px;
            height: 4px;
            background: var(--color-accent);
            border-radius: 2px;
            margin: 16px auto;
        }

        @media (max-width: 640px) {
            .section {
                padding: 48px 0;
            }

            .section-header h2 {
                font-size: 26px;
            }
        }

        /* ===== Header ===== */
        .site-header {
            background: #fff;
            border-bottom: 1px solid #E2E8F0;
            position: sticky;
            top: 0;
            z-index: 1000;
            height: 72px;
            display: flex;
            align-items: center;
        }

        .header-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            position: relative;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 22px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.5px;
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            white-space: nowrap;
            z-index: 2;
        }

        .site-logo .logo-icon {
            width: 38px;
            height: 38px;
            background: var(--color-primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            box-shadow: 0 4px 12px rgba(10, 102, 194, 0.25);
        }

        .header-nav-left,
        .header-nav-right {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .header-nav-left {
            flex: 0 1 auto;
        }

        .header-nav-right {
            margin-left: auto;
        }

        .nav-link {
            display: block;
            padding: 8px 18px;
            font-size: 15px;
            font-weight: 500;
            color: #475569;
            border-radius: var(--radius-md);
            transition: all var(--transition);
        }

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

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

        .btn-login {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 22px;
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            background: var(--color-primary);
            border-radius: 999px;
            transition: all var(--transition);
            box-shadow: 0 4px 12px rgba(10, 102, 194, 0.25);
        }

        .btn-login:hover {
            background: var(--color-primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(10, 102, 194, 0.35);
        }

        .btn-login:active {
            transform: translateY(0);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 10px;
            border-radius: var(--radius-md);
            transition: background var(--transition);
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--color-text);
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .hamburger:hover {
            background: var(--color-primary-light);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid #E2E8F0;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
            z-index: 999;
            padding: 12px 20px 20px;
        }

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

        .mobile-menu .mobile-nav-link {
            display: block;
            padding: 14px 16px;
            font-size: 16px;
            font-weight: 500;
            color: var(--color-text);
            border-bottom: 1px solid #F1F5F9;
            border-radius: var(--radius-md);
        }

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

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

        .mobile-menu .mobile-nav-link.active {
            color: var(--color-primary);
            font-weight: 600;
        }

        .mobile-menu .mobile-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            margin-top: 12px;
            padding: 12px 28px;
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            background: var(--color-primary);
            border-radius: 999px;
            width: 100%;
        }

        .mobile-menu .mobile-btn:hover {
            background: var(--color-primary-dark);
        }

        @media (max-width: 1024px) {
            .header-nav-left,
            .header-nav-right {
                display: none;
            }

            .hamburger {
                display: flex;
                margin-left: auto;
            }

            .site-logo {
                position: static;
                transform: none;
                margin-right: auto;
            }

            .header-inner {
                justify-content: flex-start;
                gap: 8px;
            }
        }

        @media (max-width: 520px) {
            .site-logo {
                font-size: 18px;
            }

            .site-logo .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 70vh;
            display: flex;
            align-items: center;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            padding: 80px 0;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(10, 102, 194, 0.55) 0%, rgba(10, 102, 194, 0.25) 60%, rgba(10, 102, 194, 0.08) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 680px;
            padding: 0 20px;
        }

        .hero h1 {
            font-size: 52px;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
            text-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
            margin-bottom: 16px;
        }

        .hero .hero-sub {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.88);
            line-height: 1.6;
            margin-bottom: 32px;
            max-width: 520px;
        }

        .hero-cta {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 48px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            font-size: 16px;
            font-weight: 600;
            color: #1E293B;
            background: var(--color-accent);
            border-radius: 999px;
            transition: all var(--transition);
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.3);
        }

        .btn-primary:hover {
            background: var(--color-accent-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.4);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 34px;
            font-size: 16px;
            font-weight: 500;
            color: #fff;
            background: transparent;
            border: 2px solid #fff;
            border-radius: 999px;
            transition: all var(--transition);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.15);
            transform: translateY(-2px);
        }

        .hero-stats {
            display: flex;
            gap: 48px;
            flex-wrap: wrap;
        }

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

        .hero-stat .stat-number {
            font-size: 36px;
            font-weight: 700;
            color: #fff;
            line-height: 1.1;
            display: block;
        }

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

        @media (max-width: 768px) {
            .hero {
                min-height: auto;
                padding: 64px 0;
            }

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

            .hero .hero-sub {
                font-size: 16px;
            }

            .hero-stats {
                gap: 24px;
            }

            .hero-stat .stat-number {
                font-size: 26px;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 28px;
            }

            .hero-cta {
                flex-direction: column;
                align-items: stretch;
            }

            .hero-cta .btn-primary,
            .hero-cta .btn-secondary {
                justify-content: center;
            }
        }

        /* ===== Collection Directory ===== */
        .directory-section {
            background: var(--color-bg);
        }

        .directory-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .directory-card {
            background: var(--color-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .directory-card .card-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }

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

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

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

        .directory-card .card-body h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 6px;
        }

        .directory-card .card-body p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin-bottom: 16px;
            flex: 1;
        }

        .directory-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 500;
            border-radius: 999px;
            background: var(--color-primary-light);
            color: var(--color-primary);
        }

        .badge-accent {
            background: rgba(245, 158, 11, 0.12);
            color: var(--color-accent-dark);
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-primary);
            transition: all var(--transition);
        }

        .card-link:hover {
            color: var(--color-primary-dark);
            gap: 8px;
        }

        @media (max-width: 1024px) {
            .directory-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 640px) {
            .directory-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== News / CMS Section ===== */
        .news-section {
            background: #fff;
        }

        .news-layout {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 28px;
            align-items: stretch;
        }

        .news-feature {
            background: var(--color-bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: all var(--transition);
            border: 1px solid #E2E8F0;
        }

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

        .news-feature-content {
            padding: 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .news-feature-content h3 {
            font-size: 22px;
            font-weight: 600;
            color: var(--color-text);
            margin: 12px 0 8px;
            line-height: 1.4;
        }

        .news-feature-content p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }

        .news-date {
            font-size: 13px;
            color: var(--color-text-secondary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

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

        .news-item {
            background: var(--color-bg);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            display: flex;
            flex-direction: column;
            gap: 6px;
            transition: all var(--transition);
            border: 1px solid #E2E8F0;
        }

        .news-item:hover {
            background: var(--color-primary-light);
            border-color: var(--color-primary);
            transform: translateX(4px);
        }

        .news-item h4 {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            line-height: 1.5;
        }

        .news-item .news-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 12px;
            color: var(--color-text-secondary);
        }

        .news-empty {
            background: var(--color-bg);
            border-radius: var(--radius-lg);
            padding: 60px 24px;
            text-align: center;
            border: 1px dashed var(--color-border);
            grid-column: 1 / -1;
        }

        .news-empty i {
            font-size: 40px;
            color: var(--color-border);
            margin-bottom: 12px;
            display: block;
        }

        .news-empty p {
            font-size: 16px;
            color: var(--color-text-secondary);
        }

        @media (max-width: 768px) {
            .news-layout {
                grid-template-columns: 1fr;
            }

            .news-feature-content h3 {
                font-size: 18px;
            }
        }

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

        .featured-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .featured-card {
            background: var(--color-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .featured-card .featured-img {
            height: 160px;
            overflow: hidden;
        }

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

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

        .featured-card .featured-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .featured-card .featured-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 6px;
        }

        .featured-card .featured-body p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 12px;
        }

        .featured-body .card-link {
            font-size: 13px;
        }

        @media (max-width: 1024px) {
            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 640px) {
            .featured-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: #fff;
        }

        .faq-layout {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 48px;
            align-items: start;
        }

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

        .faq-item {
            border: 1px solid #E2E8F0;
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
            background: var(--color-bg);
        }

        .faq-item.active {
            border-color: var(--color-primary);
            box-shadow: 0 4px 12px rgba(10, 102, 194, 0.08);
        }

        .faq-item .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            cursor: pointer;
            background: none;
            width: 100%;
            text-align: left;
            gap: 12px;
        }

        .faq-item .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            background: var(--color-primary-light);
            color: var(--color-primary);
            transition: all var(--transition);
        }

        .faq-item.active .faq-icon {
            background: var(--color-primary);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-item .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        .faq-item.active .faq-answer {
            padding: 0 20px 18px;
            max-height: 300px;
        }

        .quick-links {
            background: var(--color-bg);
            border-radius: var(--radius-lg);
            padding: 28px;
            border: 1px solid #E2E8F0;
        }

        .quick-links h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 16px;
        }

        .quick-links-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 12px;
        }

        .quick-link-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 20px 12px;
            background: var(--color-card);
            border-radius: var(--radius-md);
            border: 1px solid #E2E8F0;
            transition: all var(--transition);
            font-size: 13px;
            color: var(--color-text);
        }

        .quick-link-item:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .quick-link-item i {
            font-size: 22px;
            color: var(--color-primary);
        }

        @media (max-width: 768px) {
            .faq-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .quick-links-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (max-width: 520px) {
            .quick-links-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        /* ===== CTA Banner ===== */
        .cta-banner {
            background: linear-gradient(135deg, #0A66C2 0%, #084A8A 50%, #1E40AF 100%);
            padding: 64px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            width: 400px;
            height: 400px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 50%;
            top: -200px;
            right: -100px;
        }

        .cta-banner::after {
            content: '';
            position: absolute;
            width: 240px;
            height: 240px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 50%;
            bottom: -120px;
            left: 20%;
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }

        .cta-content h2 {
            font-size: 30px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            line-height: 1.3;
        }

        .cta-content p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.8);
        }

        .cta-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            font-size: 14px;
            font-weight: 500;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.6);
            border-radius: 999px;
            background: transparent;
            transition: all var(--transition);
        }

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

        .btn-solid-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 14px;
            font-weight: 600;
            color: #1E293B;
            background: #fff;
            border-radius: 999px;
            transition: all var(--transition);
        }

        .btn-solid-light:hover {
            background: var(--color-accent);
            color: #fff;
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .cta-inner {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }

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

            .cta-actions {
                justify-content: center;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-footer-bg);
            padding: 60px 0 0;
            color: var(--color-footer-text);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
        }

        .footer-brand .footer-logo {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }

        .footer-brand .footer-logo i {
            color: var(--color-accent);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: #94A3B8;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 8px;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 24px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 1px;
        }

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

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

        .footer-col ul li a {
            font-size: 14px;
            color: #94A3B8;
            transition: all var(--transition);
        }

        .footer-col ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 10px;
            font-size: 14px;
            color: #94A3B8;
        }

        .footer-contact span {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-contact i {
            width: 20px;
            color: var(--color-primary);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: #94A3B8;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

        /* ===== Utility ===== */
        .text-truncate-2 {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .mt-1 {
            margin-top: 8px;
        }

        .mt-2 {
            margin-top: 16px;
        }

/* roulang page: article */
:root {
            --primary: #0A66C2;
            --primary-dark: #084A8A;
            --primary-light: #E8F0FE;
            --accent: #F59E0B;
            --accent-dark: #D97706;
            --bg-body: #F8FAFC;
            --bg-white: #FFFFFF;
            --text-main: #1E293B;
            --text-muted: #64748B;
            --text-light: #94A3B8;
            --border: #E2E8F0;
            --border-light: #CBD5E1;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 4px 16px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
            --shadow-hover: 0 8px 30px rgba(10, 102, 194, 0.12);
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-pill: 999px;
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --transition: 0.25s ease;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        button {
            font-family: inherit;
            cursor: pointer;
        }
        ul,
        ol {
            padding-left: 0;
            list-style-position: inside;
        }

        .grid-container {
            max-width: 1200px;
            padding: 0 20px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.2;
            border: 2px solid transparent;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--accent);
            color: #1E293B;
            border-color: var(--accent);
        }
        .btn-primary:hover {
            background: var(--accent-dark);
            color: #1E293B;
            border-color: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 4px 15px rgba(245, 158, 11, 0.25);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 4px 15px rgba(10, 102, 194, 0.2);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
            border-radius: var(--radius-pill);
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: #fff;
            border-bottom: 1px solid var(--border);
            height: 72px;
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            text-decoration: none;
            order: 2;
        }
        .header-logo i {
            font-size: 20px;
            color: var(--primary);
        }
        .header-logo:hover {
            color: var(--primary-dark);
        }
        .header-nav-left {
            display: flex;
            align-items: center;
            gap: 28px;
            order: 1;
            flex: 1;
        }
        .header-nav-right {
            display: flex;
            align-items: center;
            gap: 20px;
            order: 3;
            flex: 1;
            justify-content: flex-end;
        }
        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: #475569;
            text-decoration: none;
            padding: 8px 0;
            position: relative;
            transition: color var(--transition);
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .btn-login {
            padding: 8px 18px;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text-main);
            cursor: pointer;
            padding: 8px;
            order: 4;
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 16px 20px;
            z-index: 999;
            flex-direction: column;
            gap: 0;
            box-shadow: var(--shadow-md);
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu-link {
            padding: 14px 0;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-main);
            text-decoration: none;
            border-bottom: 1px solid var(--border);
        }
        .mobile-menu-link:last-child {
            border-bottom: none;
        }
        .mobile-menu-link:hover {
            color: var(--primary);
        }

        .article-hero {
            background: linear-gradient(135deg, rgba(10, 102, 194, 0.92), rgba(8, 74, 138, 0.78)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            padding: 60px 0 56px;
            color: #fff;
            border-bottom: 4px solid var(--accent);
        }
        .article-hero .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 14px;
            margin-bottom: 24px;
            color: rgba(255, 255, 255, 0.8);
        }
        .article-hero .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            text-decoration: none;
        }
        .article-hero .breadcrumb a:hover {
            color: #fff;
        }
        .breadcrumb-sep {
            opacity: 0.5;
            margin: 0 2px;
        }
        .breadcrumb-current {
            color: #fff;
            max-width: 260px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .article-hero h1 {
            font-size: 42px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 20px;
            color: #fff;
            max-width: 860px;
        }
        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }
        .article-badge {
            display: inline-flex;
            align-items: center;
            padding: 4px 14px;
            background: rgba(255, 255, 255, 0.2);
            border: 1px solid rgba(255, 255, 255, 0.35);
            border-radius: var(--radius-pill);
            font-size: 13px;
            color: #fff;
            font-weight: 500;
        }
        .article-date {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .article-section {
            padding: 56px 0 40px;
        }
        .article-body {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 48px 56px;
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-main);
        }
        .article-body h2 {
            font-size: 26px;
            font-weight: 700;
            margin: 32px 0 16px;
            color: var(--text-main);
            line-height: 1.4;
        }
        .article-body h3 {
            font-size: 20px;
            font-weight: 600;
            margin: 28px 0 12px;
            color: var(--text-main);
        }
        .article-body p {
            margin-bottom: 16px;
        }
        .article-body img {
            width: 100%;
            border-radius: 8px;
            margin: 20px 0;
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 16px 24px;
            list-style-position: outside;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 16px 20px;
            border-radius: 0 8px 8px 0;
            margin: 20px 0;
            color: var(--text-muted);
            font-style: italic;
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
        }
        .article-body table th,
        .article-body table td {
            border: 1px solid var(--border);
            padding: 10px 14px;
            text-align: left;
        }
        .article-body table th {
            background: var(--primary-light);
            font-weight: 600;
        }
        .article-body pre {
            background: #1E293B;
            color: #E2E8F0;
            padding: 16px 20px;
            border-radius: 8px;
            overflow-x: auto;
            font-size: 14px;
            line-height: 1.6;
            margin: 20px 0;
        }
        .article-body code {
            background: var(--primary-light);
            color: var(--primary);
            padding: 2px 6px;
            border-radius: 4px;
            font-size: 14px;
        }
        .article-body a {
            color: var(--primary);
            text-decoration: underline;
        }

        .article-tags {
            margin-top: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag-badge {
            display: inline-block;
            padding: 6px 16px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 500;
            transition: all var(--transition);
        }
        .tag-badge:hover {
            background: var(--primary);
            color: #fff;
        }

        .article-cta {
            padding: 32px 0 56px;
        }
        .share-actions {
            display: flex;
            align-items: center;
            justify-content: center;
            flex-wrap: wrap;
            gap: 12px;
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 28px 24px;
            max-width: 780px;
            margin: 0 auto;
        }
        .share-label {
            font-size: 15px;
            color: var(--text-muted);
            margin-right: 8px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .share-label i {
            color: var(--accent);
        }

        .related-section {
            padding: 0 0 80px;
        }
        .section-header {
            text-align: center;
            margin-bottom: 36px;
        }
        .section-title {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
            position: relative;
            display: inline-block;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 48px;
            height: 3px;
            background: var(--accent);
            border-radius: 3px;
        }
        .section-subtitle {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 16px;
        }
        .related-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            text-decoration: none;
            display: block;
            height: 100%;
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            text-decoration: none;
        }
        .related-card-image {
            width: 100%;
            height: 160px;
            object-fit: cover;
            display: block;
        }
        .related-card-body {
            padding: 16px 20px 20px;
        }
        .related-card-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.5;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card-date {
            font-size: 13px;
            color: var(--text-muted);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .not-found {
            padding: 100px 0;
            text-align: center;
        }
        .not-found-card {
            max-width: 480px;
            margin: 0 auto;
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 48px 32px;
            box-shadow: var(--shadow-sm);
        }
        .not-found-card i {
            font-size: 48px;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .not-found-card h2 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .not-found-card p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .site-footer {
            background: #1E293B;
            color: #CBD5E1;
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-logo i {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: #94A3B8;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: #94A3B8;
            font-size: 14px;
            text-decoration: none;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
        }
        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 8px;
            font-size: 14px;
            color: #94A3B8;
        }
        .footer-contact span {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-contact i {
            color: var(--accent);
            width: 16px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: #64748B;
        }

        @media (max-width: 1024px) {
            .header-nav-left,
            .header-nav-right {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .article-hero h1 {
                font-size: 34px;
            }
            .article-body {
                padding: 32px 28px;
            }
            .related-grid {
                gap: 20px;
            }
        }

        @media (max-width: 640px) {
            .site-header {
                height: 64px;
            }
            .header-logo {
                font-size: 18px;
            }
            .article-hero {
                padding: 40px 0 32px;
            }
            .article-hero h1 {
                font-size: 26px;
            }
            .article-section {
                padding: 32px 0 24px;
            }
            .article-body {
                padding: 24px 18px;
                border-radius: 12px;
            }
            .article-body h2 {
                font-size: 22px;
            }
            .article-body h3 {
                font-size: 18px;
            }
            .article-tags {
                padding: 0;
            }
            .share-actions {
                flex-direction: column;
                padding: 20px 16px;
            }
            .section-title {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-brand {
                grid-column: 1;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #0A66C2;
            --primary-dark: #084A8F;
            --primary-light: #E8F0FE;
            --accent: #F59E0B;
            --accent-dark: #D97706;
            --bg-page: #F8FAFC;
            --bg-card: #FFFFFF;
            --text-main: #1E293B;
            --text-sub: #64748B;
            --border: #E2E8F0;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 4px 16px rgba(0, 0, 0, 0.05);
            --shadow-hover: 0 8px 30px rgba(10, 102, 194, 0.12);
            --radius-lg: 16px;
            --radius-sm: 10px;
            --radius-badge: 999px;
            --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            background: var(--bg-page);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 200;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            height: 72px;
            box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            position: relative;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            white-space: nowrap;
        }

        .brand-logo .brand-icon {
            width: 38px;
            height: 38px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            box-shadow: 0 4px 12px rgba(10, 102, 194, 0.25);
        }

        .header-nav-left,
        .header-nav-right {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-link {
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            color: #475569;
            border-radius: var(--radius-badge);
            transition: all 0.2s ease;
        }

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

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

        .header-action {
            display: flex;
            align-items: center;
        }

        .btn-header {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 9px 20px;
            border-radius: var(--radius-badge);
            transition: all 0.25s ease;
            box-shadow: 0 4px 14px rgba(10, 102, 194, 0.2);
        }

        .btn-header:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(10, 102, 194, 0.3);
            color: #fff;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 10px;
            border-radius: 8px;
            z-index: 210;
        }

        .nav-toggle span {
            width: 24px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: transform 0.3s ease, opacity 0.2s ease;
        }

        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            position: absolute;
            top: 72px;
            left: 0;
            right: 0;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            padding: 16px 20px 24px;
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
            z-index: 190;
        }

        .mobile-menu.open {
            display: block;
            animation: slideDown 0.25s ease;
        }

        @keyframes slideDown {
            from {
                opacity: 0;
                transform: translateY(-8px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .mobile-link {
            display: block;
            padding: 14px 0;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-main);
            border-bottom: 1px solid #F1F5F9;
            transition: color 0.2s ease;
        }

        .mobile-link:hover {
            color: var(--primary);
        }

        .mobile-link.active {
            color: var(--primary);
            font-weight: 600;
        }

        .mobile-btn {
            display: block;
            margin-top: 16px;
            text-align: center;
            background: var(--primary);
            color: #fff;
            padding: 13px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            transition: background 0.2s ease;
        }

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

        /* ===== Hero ===== */
        .category-hero {
            position: relative;
            background: linear-gradient(135deg, #E8F0FE 0%, #F0F7FF 55%, #F8FAFC 100%);
            padding: 88px 0 72px;
            overflow: hidden;
        }

        .category-hero::before {
            content: "";
            position: absolute;
            width: 420px;
            height: 420px;
            right: -100px;
            top: -100px;
            background: rgba(10, 102, 194, 0.07);
            border-radius: 50%;
        }

        .category-hero::after {
            content: "";
            position: absolute;
            width: 260px;
            height: 260px;
            left: -70px;
            bottom: -90px;
            background: rgba(245, 158, 11, 0.06);
            border-radius: 50%;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 860px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.85);
            border: 1px solid rgba(10, 102, 194, 0.12);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 7px 18px;
            border-radius: var(--radius-badge);
            margin-bottom: 20px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
        }

        .category-hero h1 {
            font-size: 52px;
            font-weight: 700;
            line-height: 1.2;
            color: var(--text-main);
            letter-spacing: -0.5px;
            margin-bottom: 14px;
        }

        .hero-subtitle {
            font-size: 18px;
            color: var(--text-sub);
            line-height: 1.6;
            margin-bottom: 30px;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 48px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            transition: all 0.25s ease;
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
        }

        .btn-accent {
            background: var(--accent);
            color: #1E293B !important;
            box-shadow: 0 6px 20px rgba(245, 158, 11, 0.3);
        }

        .btn-accent:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 26px rgba(245, 158, 11, 0.38);
            color: #1E293B !important;
        }

        .btn-outline {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary) !important;
        }

        .btn-outline:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
        }

        .hero-metrics {
            display: flex;
            justify-content: center;
            gap: 0;
            background: rgba(255, 255, 255, 0.8);
            border: 1px solid rgba(255, 255, 255, 0.9);
            border-radius: var(--radius-lg);
            padding: 24px 16px;
            box-shadow: var(--shadow-sm);
            max-width: 640px;
            margin: 0 auto;
        }

        .metric-item {
            flex: 1;
            text-align: center;
            position: relative;
        }

        .metric-item + .metric-item::before {
            content: "";
            position: absolute;
            left: 0;
            top: 18%;
            height: 64%;
            width: 1px;
            background: var(--border);
        }

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

        .metric-label {
            display: block;
            font-size: 13px;
            color: var(--text-sub);
            margin-top: 4px;
        }

        /* ===== Section 通用 ===== */
        .section-guides,
        .section-process,
        .section-scene,
        .section-faq {
            padding: 90px 0;
        }

        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 52px;
        }

        .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: var(--radius-badge);
            margin-bottom: 14px;
        }

        .section-head h2 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }

        .section-head p {
            color: var(--text-sub);
            font-size: 16px;
            line-height: 1.6;
        }

        /* ===== Guides Cards ===== */
        .section-guides {
            background: var(--bg-card);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .card-guide {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            height: 100%;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-sm);
            transition: all 0.25s ease;
            margin-bottom: 24px;
        }

        .card-guide:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(10, 102, 194, 0.2);
        }

        .card-guide-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
        }

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

        .card-guide:hover .card-guide-img img {
            transform: scale(1.04);
        }

        .card-guide-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(255, 255, 255, 0.92);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: var(--radius-badge);
            backdrop-filter: blur(4px);
        }

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

        .card-guide-body h3 {
            font-size: 19px;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .card-guide-body h3 a {
            color: var(--text-main);
            transition: color 0.2s ease;
        }

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

        .card-guide-body p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.65;
            margin-bottom: 16px;
            flex: 1;
        }

        .card-guide-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid #F1F5F9;
            padding-top: 14px;
        }

        .meta-time {
            font-size: 13px;
            color: var(--text-sub);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .link-more {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap 0.2s ease;
        }

        .link-more:hover {
            gap: 10px;
            color: var(--primary-dark);
        }

        /* ===== Process ===== */
        .section-process {
            background: var(--bg-page);
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }

        .process-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            position: relative;
            box-shadow: var(--shadow-sm);
            transition: all 0.25s ease;
        }

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

        .process-num {
            font-size: 40px;
            font-weight: 800;
            color: var(--primary-light);
            line-height: 1;
            margin-bottom: 18px;
            display: block;
        }

        .process-item h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .process-item p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.65;
        }

        /* ===== Scene ===== */
        .section-scene {
            background: var(--primary-light);
            position: relative;
        }

        .section-scene .section-tag {
            background: rgba(255, 255, 255, 0.9);
        }

        .scene-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .scene-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 30px;
            display: flex;
            gap: 20px;
            align-items: flex-start;
            border: 1px solid transparent;
            box-shadow: var(--shadow-sm);
            transition: all 0.25s ease;
        }

        .scene-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(10, 102, 194, 0.15);
            transform: translateY(-3px);
        }

        .scene-icon {
            width: 52px;
            height: 52px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            flex-shrink: 0;
        }

        .scene-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .scene-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .section-faq {
            background: var(--bg-card);
            border-top: 1px solid var(--border);
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            overflow: hidden;
            transition: all 0.25s ease;
            background: #fff;
        }

        .faq-item.active {
            border-color: var(--primary);
            box-shadow: 0 4px 16px rgba(10, 102, 194, 0.08);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            background: transparent;
        }

        .faq-question i {
            font-size: 14px;
            color: var(--primary);
            transition: transform 0.3s ease;
            flex-shrink: 0;
            margin-left: 16px;
        }

        .faq-item.active .faq-question i {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 22px;
        }

        .faq-answer p {
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.75;
        }

        /* ===== CTA ===== */
        .section-cta {
            position: relative;
            padding: 90px 0;
            background: url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            overflow: hidden;
        }

        .section-cta::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(105deg, rgba(10, 102, 194, 0.92) 0%, rgba(30, 41, 59, 0.88) 100%);
        }

        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
            color: #fff;
        }

        .cta-content h2 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 14px;
        }

        .cta-content p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.82);
            margin-bottom: 32px;
            line-height: 1.6;
        }

        .btn-lg {
            padding: 16px 42px;
            font-size: 16px;
            border-radius: var(--radius-sm);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #1E293B;
            color: #CBD5E1;
            padding: 70px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.4fr;
            gap: 48px;
            padding-bottom: 50px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-logo i {
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.75;
            color: #94A3B8;
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 18px;
        }

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

        .footer-col ul li a {
            font-size: 14px;
            color: #94A3B8;
            transition: color 0.2s ease;
        }

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

        .footer-contact span {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: #94A3B8;
            margin-bottom: 12px;
        }

        .footer-contact i {
            color: var(--primary);
            width: 18px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 22px 0;
            text-align: center;
            font-size: 13px;
            color: #94A3B8;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .header-nav-left,
            .header-nav-right,
            .header-action {
                display: none;
            }

            .nav-toggle {
                display: flex;
                margin-left: auto;
            }

            .brand-logo {
                left: 20px;
                transform: none;
                position: relative;
                font-size: 20px;
            }

            .header-inner {
                justify-content: space-between;
            }

            .mobile-menu {
                top: 64px;
            }

            .site-header,
            .header-inner {
                height: 64px;
            }

            .category-hero {
                padding: 64px 0 56px;
            }

            .category-hero h1 {
                font-size: 40px;
            }

            .hero-subtitle {
                font-size: 16px;
            }

            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .section-guides,
            .section-process,
            .section-scene,
            .section-faq,
            .section-cta {
                padding: 64px 0;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
        }

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

            .brand-logo {
                font-size: 18px;
                gap: 8px;
            }

            .brand-logo .brand-icon {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }

            .category-hero {
                padding: 48px 0 40px;
            }

            .category-hero h1 {
                font-size: 30px;
            }

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

            .hero-actions {
                flex-direction: column;
                align-items: center;
                gap: 12px;
            }

            .btn {
                width: 100%;
                max-width: 280px;
            }

            .hero-metrics {
                flex-direction: column;
                gap: 16px;
                max-width: 280px;
                padding: 20px;
            }

            .metric-item + .metric-item::before {
                display: none;
            }

            .metric-num {
                font-size: 24px;
            }

            .section-head {
                margin-bottom: 36px;
            }

            .section-head h2 {
                font-size: 26px;
            }

            .section-guides,
            .section-process,
            .section-scene,
            .section-faq,
            .section-cta {
                padding: 48px 0;
            }

            .card-guide-body {
                padding: 20px;
            }

            .card-guide-body h3 {
                font-size: 17px;
            }

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

            .scene-grid {
                grid-template-columns: 1fr;
            }

            .scene-card {
                padding: 22px;
            }

            .faq-question {
                padding: 16px 18px;
                font-size: 15px;
            }

            .faq-item.active .faq-answer {
                padding: 0 18px 18px;
            }

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

            .cta-content p {
                font-size: 15px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
                padding-bottom: 30px;
            }

            .site-footer {
                padding-top: 50px;
            }
        }

        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 26px;
            }

            .hero-subtitle {
                font-size: 14px;
            }

            .hero-badge {
                font-size: 12px;
                padding: 6px 14px;
            }

            .metric-num {
                font-size: 22px;
            }

            .section-head h2 {
                font-size: 23px;
            }

            .process-item {
                padding: 24px 20px;
            }

            .scene-card {
                flex-direction: column;
            }

            .scene-icon {
                width: 44px;
                height: 44px;
                font-size: 17px;
            }
        }

        @media (max-width: 1024px) and (min-width: 641px) {
            .grid-x .cell {
                flex: 0 0 50%;
                max-width: 50%;
            }
        }