/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a3a5c;
            --primary-dark: #0f2440;
            --primary-light: #2a5a8c;
            --accent: #0ea5e9;
            --accent-light: #38bdf8;
            --accent-dark: #0284c7;
            --success: #10b981;
            --warning: #f59e0b;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --bg-section-alt: #f1f5f9;
            --bg-dark: #0f172a;
            --text-primary: #1e293b;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --text-light: #f1f5f9;
            --border-color: #e2e8f0;
            --border-radius: 12px;
            --border-radius-sm: 8px;
            --border-radius-lg: 20px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
            --shadow-lg: 0 12px 32px rgba(0,0,0,0.10), 0 4px 12px rgba(0,0,0,0.06);
            --shadow-xl: 0 24px 48px rgba(0,0,0,0.12);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --spacing-section: 5rem;
            --spacing-section-sm: 3rem;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-primary);
            letter-spacing: -0.01em;
        }
        p {
            color: var(--text-secondary);
            margin-bottom: 1rem;
        }
        .container {
            max-width: 1200px;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        /* ===== Navbar ===== */
        .navbar-brand {
            font-weight: 800;
            font-size: 1.5rem;
            color: var(--primary-dark) !important;
            letter-spacing: -0.02em;
            padding: 0;
        }
        .navbar-brand .brand-highlight {
            color: var(--accent);
        }
        .navbar {
            background: rgba(255,255,255,0.96) !important;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            padding-top: 0.75rem;
            padding-bottom: 0.75rem;
            box-shadow: 0 1px 4px rgba(0,0,0,0.02);
        }
        .navbar .nav-link {
            font-weight: 500;
            color: var(--text-secondary) !important;
            padding: 0.5rem 1rem;
            border-radius: var(--border-radius-sm);
            transition: all 0.2s ease;
            font-size: 0.95rem;
            position: relative;
        }
        .navbar .nav-link:hover,
        .navbar .nav-link:focus {
            color: var(--primary) !important;
            background: rgba(26,58,92,0.06);
        }
        .navbar .nav-link.active {
            color: var(--primary) !important;
            background: rgba(26,58,92,0.08);
            font-weight: 600;
        }
        .navbar .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }
        .navbar .nav-cta {
            background: var(--primary);
            color: #fff !important;
            padding: 0.5rem 1.25rem;
            border-radius: var(--border-radius-sm);
            font-weight: 600;
            transition: all 0.25s ease;
        }
        .navbar .nav-cta:hover {
            background: var(--primary-dark);
            color: #fff !important;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }
        .navbar-toggler {
            border: none;
            padding: 0.4rem 0.6rem;
            border-radius: var(--border-radius-sm);
            color: var(--text-primary);
        }
        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='%231e293b' stroke-width='2.5' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
        }
        .navbar .search-box {
            background: var(--bg-body);
            border: 1px solid var(--border-color);
            border-radius: 100px;
            padding: 0.3rem 0.3rem 0.3rem 1rem;
            transition: all 0.25s ease;
            max-width: 240px;
        }
        .navbar .search-box:focus-within {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(14,165,233,0.12);
        }
        .navbar .search-box input {
            border: none;
            background: transparent;
            padding: 0.35rem 0;
            font-size: 0.9rem;
            color: var(--text-primary);
            outline: none;
            width: 120px;
        }
        .navbar .search-box input::placeholder {
            color: var(--text-muted);
        }
        .navbar .search-box button {
            background: var(--accent);
            color: #fff;
            border: none;
            border-radius: 100px;
            padding: 0.35rem 0.9rem;
            font-size: 0.8rem;
            font-weight: 600;
            transition: background 0.2s ease;
            cursor: pointer;
        }
        .navbar .search-box button:hover {
            background: var(--accent-dark);
        }

        /* ===== Hero ===== */
        .hero-section {
            padding: 5rem 0 4rem;
            background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 50%, #f8fafc 100%);
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(14,165,233,0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(26,58,92,0.05) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-title {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.15;
            color: var(--primary-dark);
            letter-spacing: -0.03em;
        }
        .hero-title .highlight {
            color: var(--accent);
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-sub {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 560px;
            margin-top: 1.25rem;
        }
        .hero-actions {
            margin-top: 2rem;
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .btn-primary-custom {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 0.75rem 2rem;
            border-radius: var(--border-radius-sm);
            font-weight: 600;
            font-size: 1rem;
            transition: all 0.25s ease;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            box-shadow: 0 4px 12px rgba(26,58,92,0.25);
        }
        .btn-primary-custom:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(26,58,92,0.30);
        }
        .btn-primary-custom:focus {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }
        .btn-outline-custom {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
            padding: 0.75rem 2rem;
            border-radius: var(--border-radius-sm);
            font-weight: 600;
            font-size: 1rem;
            transition: all 0.25s ease;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn-outline-custom:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-outline-custom:focus {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(14,165,233,0.10);
            color: var(--accent-dark);
            padding: 0.4rem 1rem;
            border-radius: 100px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
            border: 1px solid rgba(14,165,233,0.15);
        }
        .hero-image-wrapper {
            position: relative;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 320px;
        }
        .hero-image-placeholder {
            width: 100%;
            max-width: 480px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: var(--border-radius-lg);
            padding: 2.5rem 2rem;
            color: #fff;
            text-align: center;
            box-shadow: var(--shadow-xl);
            position: relative;
            overflow: hidden;
        }
        .hero-image-placeholder .icon-wrap {
            font-size: 3.5rem;
            margin-bottom: 1rem;
            opacity: 0.9;
        }
        .hero-image-placeholder h4 {
            color: #fff;
            font-weight: 700;
            font-size: 1.4rem;
        }
        .hero-image-placeholder p {
            color: rgba(255,255,255,0.75);
            font-size: 0.95rem;
        }
        .hero-image-placeholder .float-badge {
            position: absolute;
            background: rgba(255,255,255,0.15);
            backdrop-filter: blur(8px);
            padding: 0.5rem 1rem;
            border-radius: 100px;
            font-size: 0.8rem;
            font-weight: 500;
            border: 1px solid rgba(255,255,255,0.10);
        }
        .hero-image-placeholder .float-badge.fb-1 {
            top: 12%;
            right: 8%;
        }
        .hero-image-placeholder .float-badge.fb-2 {
            bottom: 15%;
            left: 6%;
        }

        /* ===== Section Common ===== */
        .section-padding {
            padding: var(--spacing-section) 0;
        }
        .section-padding-sm {
            padding: var(--spacing-section-sm) 0;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: -0.02em;
            margin-bottom: 0.75rem;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto 2.5rem;
        }
        .section-divider {
            width: 50px;
            height: 4px;
            background: linear-gradient(90deg, var(--accent), var(--accent-light));
            border-radius: 4px;
            margin: 0 auto 1.5rem;
        }
        .bg-alt {
            background: var(--bg-section-alt);
        }
        .bg-dark-section {
            background: var(--bg-dark);
            color: var(--text-light);
        }
        .bg-dark-section .section-title {
            color: #fff;
        }
        .bg-dark-section .section-subtitle {
            color: rgba(255,255,255,0.7);
        }

        /* ===== Cards ===== */
        .card-custom {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            padding: 1.75rem 1.5rem;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-sm);
            height: 100%;
        }
        .card-custom:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .card-custom .card-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: #fff;
            margin-bottom: 1.25rem;
            background: var(--primary);
        }
        .card-custom .card-icon.icon-accent {
            background: var(--accent);
        }
        .card-custom .card-icon.icon-success {
            background: var(--success);
        }
        .card-custom .card-icon.icon-warning {
            background: var(--warning);
        }
        .card-custom h5 {
            font-weight: 700;
            font-size: 1.15rem;
            margin-bottom: 0.6rem;
        }
        .card-custom p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }
        .card-custom .card-tag {
            display: inline-block;
            background: rgba(14,165,233,0.08);
            color: var(--accent-dark);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.2rem 0.7rem;
            border-radius: 100px;
            margin-bottom: 0.75rem;
        }

        /* ===== Category Cards ===== */
        .category-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            padding: 2rem 1.5rem;
            text-align: center;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-sm);
            height: 100%;
            cursor: pointer;
        }
        .category-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--accent);
        }
        .category-card .cat-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: #fff;
            margin: 0 auto 1rem;
            background: var(--primary);
        }
        .category-card .cat-icon.cat-accent {
            background: var(--accent);
        }
        .category-card h5 {
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 0.5rem;
        }
        .category-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 1rem;
        }
        .category-card .cat-link {
            color: var(--accent);
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }
        .category-card .cat-link:hover {
            color: var(--accent-dark);
        }

        /* ===== Stats ===== */
        .stat-item {
            text-align: center;
            padding: 1.5rem 0.5rem;
        }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: -0.03em;
            line-height: 1.1;
        }
        .stat-number .accent {
            color: var(--accent);
        }
        .stat-label {
            font-size: 0.95rem;
            color: var(--text-secondary);
            font-weight: 500;
            margin-top: 0.25rem;
        }
        .bg-dark-section .stat-number {
            color: #fff;
        }
        .bg-dark-section .stat-label {
            color: rgba(255,255,255,0.7);
        }

        /* ===== Steps / Timeline ===== */
        .step-item {
            display: flex;
            gap: 1.25rem;
            padding: 1.5rem 0;
            border-bottom: 1px solid var(--border-color);
            align-items: flex-start;
        }
        .step-item:last-child {
            border-bottom: none;
        }
        .step-number {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
        }
        .step-number.accent {
            background: var(--accent);
        }
        .step-content h6 {
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: 0.3rem;
        }
        .step-content p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-item {
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            margin-bottom: 0.75rem;
            background: var(--bg-card);
            overflow: hidden;
            transition: box-shadow 0.2s ease;
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            padding: 1.2rem 1.5rem;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            font-size: 1rem;
            transition: background 0.2s ease;
        }
        .faq-question:hover {
            background: rgba(26,58,92,0.03);
        }
        .faq-question:focus {
            outline: 2px solid var(--accent);
            outline-offset: -2px;
        }
        .faq-question .faq-toggle {
            font-size: 1.2rem;
            color: var(--text-muted);
            transition: transform 0.3s ease;
        }
        .faq-question[aria-expanded="true"] .faq-toggle {
            transform: rotate(180deg);
            color: var(--accent);
        }
        .faq-answer {
            padding: 0 1.5rem 1.2rem;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            color: #fff;
            padding: 4rem 0;
            text-align: center;
        }
        .cta-section h2 {
            color: #fff;
            font-weight: 800;
            font-size: 2.2rem;
        }
        .cta-section p {
            color: rgba(255,255,255,0.8);
            max-width: 600px;
            margin: 0.75rem auto 2rem;
        }
        .cta-section .btn-cta {
            background: #fff;
            color: var(--primary);
            border: none;
            padding: 0.85rem 2.5rem;
            border-radius: var(--border-radius-sm);
            font-weight: 700;
            font-size: 1.05rem;
            transition: all 0.25s ease;
            box-shadow: 0 6px 20px rgba(0,0,0,0.15);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .cta-section .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(0,0,0,0.20);
            background: var(--accent-light);
            color: var(--primary-dark);
        }
        .cta-section .btn-cta:focus {
            outline: 3px solid rgba(255,255,255,0.6);
            outline-offset: 3px;
        }
        .cta-section .cta-meta {
            color: rgba(255,255,255,0.5);
            font-size: 0.85rem;
            margin-top: 1rem;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 3.5rem 0 2rem;
        }
        .footer h6 {
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 1rem;
        }
        .footer a {
            color: rgba(255,255,255,0.6);
            transition: color 0.2s ease;
            font-size: 0.9rem;
        }
        .footer a:hover {
            color: var(--accent-light);
        }
        .footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer .footer-links li {
            margin-bottom: 0.4rem;
        }
        .footer .footer-brand {
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
        }
        .footer .footer-brand .brand-highlight {
            color: var(--accent);
        }
        .footer .footer-desc {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.5);
            margin-top: 0.5rem;
            max-width: 300px;
        }
        .footer .social-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            color: rgba(255,255,255,0.6);
            font-size: 1rem;
            transition: all 0.25s ease;
            margin-right: 0.5rem;
        }
        .footer .social-links a:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-2px);
        }
        .footer .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 1.5rem;
            margin-top: 2rem;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
            text-align: center;
        }

        /* ===== CMS List ===== */
        .cms-list-item {
            padding: 1.25rem 0;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            flex-wrap: wrap;
            align-items: flex-start;
            gap: 1rem;
        }
        .cms-list-item:last-child {
            border-bottom: none;
        }
        .cms-list-item .cms-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            gap: 0.75rem;
            flex-wrap: wrap;
            width: 100%;
        }
        .cms-list-item .cms-meta .badge-cat {
            background: rgba(14,165,233,0.10);
            color: var(--accent-dark);
            padding: 0.15rem 0.6rem;
            border-radius: 100px;
            font-weight: 500;
            font-size: 0.75rem;
        }
        .cms-list-item h6 {
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: 0.3rem;
            flex: 1;
        }
        .cms-list-item h6 a {
            color: var(--text-primary);
        }
        .cms-list-item h6 a:hover {
            color: var(--accent);
        }
        .cms-list-item p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 0;
            width: 100%;
        }
        .cms-empty {
            text-align: center;
            padding: 2rem;
            color: var(--text-muted);
            background: var(--bg-section-alt);
            border-radius: var(--border-radius);
            font-size: 0.95rem;
        }

        /* ===== Blog / News Card ===== */
        .news-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            overflow: hidden;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-sm);
            height: 100%;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .news-card .news-img {
            height: 180px;
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.3);
            font-size: 2.5rem;
        }
        .news-card .news-body {
            padding: 1.25rem 1.25rem 1.5rem;
        }
        .news-card .news-body .news-cat {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--accent-dark);
            background: rgba(14,165,233,0.08);
            padding: 0.2rem 0.7rem;
            border-radius: 100px;
            display: inline-block;
            margin-bottom: 0.5rem;
        }
        .news-card .news-body h6 {
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: 0.4rem;
        }
        .news-card .news-body h6 a {
            color: var(--text-primary);
        }
        .news-card .news-body h6 a:hover {
            color: var(--accent);
        }
        .news-card .news-body p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin-bottom: 0.6rem;
        }
        .news-card .news-body .news-date {
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        /* ===== Tags ===== */
        .tag {
            display: inline-block;
            background: var(--bg-section-alt);
            color: var(--text-secondary);
            padding: 0.25rem 0.8rem;
            border-radius: 100px;
            font-size: 0.8rem;
            font-weight: 500;
            border: 1px solid var(--border-color);
            transition: all 0.2s ease;
        }
        .tag:hover {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
        }

        /* ===== Responsive ===== */
        @media (max-width: 991.98px) {
            .hero-title {
                font-size: 2.4rem;
            }
            .navbar .nav-link.active::after {
                display: none;
            }
            .navbar .search-box {
                max-width: 100%;
                margin-top: 0.5rem;
            }
            .navbar .search-box input {
                width: 100%;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .stat-number {
                font-size: 2.2rem;
            }
            .cta-section h2 {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 767.98px) {
            .hero-section {
                padding: 3rem 0 2.5rem;
            }
            .hero-title {
                font-size: 2rem;
            }
            .hero-sub {
                font-size: 1rem;
            }
            .hero-image-placeholder {
                margin-top: 2rem;
                padding: 1.8rem 1.2rem;
            }
            .section-padding {
                padding: 3rem 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .navbar-brand {
                font-size: 1.25rem;
            }
            .card-custom {
                padding: 1.25rem 1rem;
            }
            .stat-number {
                font-size: 1.8rem;
            }
            .category-card {
                padding: 1.5rem 1rem;
            }
            .cta-section {
                padding: 2.5rem 0;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .footer {
                padding: 2.5rem 0 1.5rem;
            }
            .footer .footer-brand {
                font-size: 1.2rem;
            }
            .step-item {
                flex-direction: column;
                gap: 0.75rem;
            }
        }
        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.7rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .btn-primary-custom,
            .btn-outline-custom {
                text-align: center;
                justify-content: center;
            }
            .navbar .navbar-collapse {
                padding-top: 0.5rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .stat-number {
                font-size: 1.6rem;
            }
            .cms-list-item {
                flex-direction: column;
                gap: 0.3rem;
            }
            .cms-list-item h6 {
                font-size: 1rem;
            }
            .news-card .news-img {
                height: 140px;
            }
        }

        /* ===== Utilities ===== */
        .text-accent {
            color: var(--accent);
        }
        .bg-gradient-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
        }
        .shadow-hover:hover {
            box-shadow: var(--shadow-lg);
        }
        .transition-base {
            transition: all 0.3s ease;
        }
        .rounded-custom {
            border-radius: var(--border-radius);
        }
        .border-light-custom {
            border: 1px solid var(--border-color);
        }

        /* ===== Accessibility ===== */
        :focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }
        .skip-link {
            position: absolute;
            top: -100%;
            left: 50%;
            transform: translateX(-50%);
            background: var(--primary);
            color: #fff;
            padding: 0.5rem 1.5rem;
            border-radius: 0 0 8px 8px;
            z-index: 9999;
            font-weight: 600;
        }
        .skip-link:focus {
            top: 0;
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0a4b7a;
            --primary-light: #1a6ba8;
            --primary-dark: #06304f;
            --secondary: #00b4d8;
            --secondary-light: #48cae4;
            --accent: #f7931e;
            --accent-light: #ffb347;
            --bg-body: #f5f8fb;
            --bg-card: #ffffff;
            --bg-dark: #0a1a2b;
            --text-primary: #1a2a3a;
            --text-secondary: #4a5a6a;
            --text-muted: #8899aa;
            --text-light: #f0f4f8;
            --border-color: rgba(10, 75, 122, 0.12);
            --border-light: #e8edf2;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(10, 75, 122, 0.06);
            --shadow-md: 0 6px 24px rgba(10, 75, 122, 0.10);
            --shadow-lg: 0 16px 48px rgba(10, 75, 122, 0.14);
            --transition: all 0.25s ease;
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --spacer: 2rem;
        }

        /* ===== 基础 Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        :focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 2px;
        }
        ul,
        ol {
            padding-left: 1.25rem;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: 1200px;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        /* ===== 导航 Header ===== */
        header {
            background: var(--bg-card);
            box-shadow: 0 2px 16px rgba(10, 75, 122, 0.08);
            position: sticky;
            top: 0;
            z-index: 1050;
        }
        .navbar {
            padding-top: 0.6rem;
            padding-bottom: 0.6rem;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.6rem;
            color: var(--primary-dark) !important;
            letter-spacing: -0.3px;
            padding: 0;
        }
        .brand-highlight {
            color: var(--accent);
        }
        .navbar-nav .nav-link {
            font-weight: 500;
            color: var(--text-secondary) !important;
            padding: 0.5rem 1rem;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
        }
        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link:focus {
            color: var(--primary) !important;
            background: rgba(10, 75, 122, 0.05);
        }
        .navbar-nav .nav-link.active {
            color: var(--primary) !important;
            background: rgba(10, 75, 122, 0.08);
        }
        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 1rem;
            right: 1rem;
            height: 3px;
            background: var(--accent);
            border-radius: 3px 3px 0 0;
        }
        .search-box {
            background: var(--bg-body);
            border: 1px solid var(--border-light);
            border-radius: 50px;
            padding: 0.2rem 0.2rem 0.2rem 1rem;
            transition: var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--secondary);
            box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.15);
        }
        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            padding: 0.3rem 0.5rem;
            min-width: 140px;
            color: var(--text-primary);
            font-size: 0.9rem;
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }
        .search-box button {
            background: var(--primary);
            border: none;
            color: #fff;
            width: 34px;
            height: 34px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }
        .search-box button:hover {
            background: var(--primary-light);
            transform: scale(1.05);
        }
        .nav-cta {
            background: var(--accent) !important;
            color: #fff !important;
            border-radius: 50px !important;
            padding: 0.4rem 1.4rem !important;
            font-weight: 600;
            transition: var(--transition);
            border: none;
        }
        .nav-cta:hover {
            background: var(--accent-light) !important;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(247, 147, 30, 0.35);
        }
        .navbar-toggler {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 0.4rem 0.6rem;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='rgba(10,75,122,0.7)' stroke-width='2' stroke-linecap='round' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
        }

        /* ===== 频道 Tabs 行（第二层） ===== */
        .channel-tabs {
            background: var(--bg-card);
            border-top: 1px solid var(--border-light);
            padding: 0.4rem 0;
            overflow-x: auto;
            white-space: nowrap;
            scrollbar-width: thin;
            scrollbar-color: var(--border-color) transparent;
        }
        .channel-tabs::-webkit-scrollbar {
            height: 4px;
        }
        .channel-tabs::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: 4px;
        }
        .channel-tabs .nav-pills {
            flex-wrap: nowrap;
            gap: 0.3rem;
        }
        .channel-tabs .nav-pills .nav-link {
            border-radius: 50px;
            padding: 0.35rem 1.1rem;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: transparent;
            border: 1px solid transparent;
            transition: var(--transition);
        }
        .channel-tabs .nav-pills .nav-link:hover {
            background: rgba(10, 75, 122, 0.06);
            color: var(--primary);
            border-color: var(--border-color);
        }
        .channel-tabs .nav-pills .nav-link.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 2px 10px rgba(10, 75, 122, 0.2);
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 4rem 0;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 0.5rem;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto 2.5rem auto;
        }
        .divider {
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 4px;
            margin: 0.75rem 0 1.5rem 0;
        }
        .divider-center {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Hero 首屏 ===== */
        .hero-category {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            padding: 4rem 0 3.5rem 0;
            color: var(--text-light);
            position: relative;
            overflow: hidden;
        }
        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 20% 80%, rgba(0, 180, 216, 0.15) 0%, transparent 60%),
                radial-gradient(circle at 80% 20%, rgba(247, 147, 30, 0.10) 0%, transparent 50%);
            pointer-events: none;
        }
        .hero-category .container {
            position: relative;
            z-index: 1;
        }
        .hero-category h1 {
            font-size: 2.6rem;
            font-weight: 800;
            margin-bottom: 0.75rem;
            letter-spacing: -0.5px;
        }
        .hero-category h1 .highlight {
            color: var(--accent);
        }
        .hero-category p {
            font-size: 1.15rem;
            opacity: 0.92;
            max-width: 600px;
            margin-bottom: 1.5rem;
        }
        .hero-category .badge-group {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
        }
        .hero-category .badge-group .badge {
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(4px);
            color: #fff;
            padding: 0.4rem 1rem;
            border-radius: 50px;
            font-weight: 500;
            font-size: 0.85rem;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        /* ===== 卡片 ===== */
        .card-custom {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
            overflow: hidden;
        }
        .card-custom:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--border-color);
        }
        .card-custom .card-body {
            padding: 1.75rem;
        }
        .card-custom .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: #fff;
            margin-bottom: 1rem;
        }
        .card-custom .card-title {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--primary-dark);
            margin-bottom: 0.5rem;
        }
        .card-custom .card-text {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
        }
        .card-custom .card-tag {
            display: inline-block;
            background: rgba(10, 75, 122, 0.06);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 500;
            padding: 0.2rem 0.7rem;
            border-radius: 50px;
            margin-top: 0.75rem;
        }

        /* ===== 步骤流程 ===== */
        .step-list {
            counter-reset: step;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .step-list li {
            counter-increment: step;
            position: relative;
            padding: 1.5rem 1.5rem 1.5rem 3.8rem;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            margin-bottom: 1rem;
            transition: var(--transition);
        }
        .step-list li:hover {
            border-color: var(--border-color);
            box-shadow: var(--shadow-sm);
        }
        .step-list li::before {
            content: counter(step);
            position: absolute;
            left: 1.2rem;
            top: 1.4rem;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .step-list li .step-title {
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--primary-dark);
            margin-bottom: 0.2rem;
        }
        .step-list li .step-desc {
            color: var(--text-secondary);
            font-size: 0.92rem;
            margin: 0;
        }

        /* ===== 数据 / 统计 ===== */
        .stat-card {
            text-align: center;
            padding: 1.5rem 1rem;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .stat-card .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-top: 0.25rem;
        }

        /* ===== FAQ ===== */
        .faq-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            background: var(--bg-card);
            margin-bottom: 0.75rem;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-color);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            padding: 1.2rem 1.5rem;
            font-weight: 600;
            font-size: 1rem;
            color: var(--primary-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            transition: transform 0.3s ease;
            color: var(--text-muted);
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 1.5rem 1.2rem 1.5rem;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            padding: 4rem 0;
            text-align: center;
            color: var(--text-light);
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }
        .cta-section p {
            opacity: 0.9;
            max-width: 600px;
            margin: 0 auto 2rem auto;
            font-size: 1.05rem;
        }
        .cta-section .btn-cta {
            background: var(--accent);
            border: none;
            color: #fff;
            padding: 0.8rem 2.8rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.1rem;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(247, 147, 30, 0.3);
        }
        .cta-section .btn-cta:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(247, 147, 30, 0.4);
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 4rem 0 2rem 0;
        }
        .footer .footer-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.75rem;
        }
        .footer .footer-desc {
            font-size: 0.9rem;
            opacity: 0.7;
            max-width: 300px;
        }
        .footer .social-links a {
            display: inline-flex;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.7);
            align-items: center;
            justify-content: center;
            margin-right: 0.5rem;
            transition: var(--transition);
            font-size: 1rem;
        }
        .footer .social-links a:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-2px);
        }
        .footer h6 {
            color: #fff;
            font-weight: 600;
            margin-bottom: 1rem;
            font-size: 1rem;
        }
        .footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer .footer-links li {
            margin-bottom: 0.5rem;
        }
        .footer .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer .footer-links a:hover {
            color: var(--accent);
            padding-left: 3px;
        }
        .footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.5rem;
            margin-top: 2.5rem;
            text-align: center;
            font-size: 0.85rem;
            opacity: 0.6;
        }

        /* ===== 按钮通用 ===== */
        .btn-primary-custom {
            background: var(--primary);
            border: none;
            color: #fff;
            padding: 0.6rem 1.8rem;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-primary-custom:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(10, 75, 122, 0.25);
        }
        .btn-outline-custom {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
            padding: 0.5rem 1.6rem;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-outline-custom:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero-category h1 {
                font-size: 2.2rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
        }
        @media (max-width: 768px) {
            .navbar-brand {
                font-size: 1.3rem;
            }
            .hero-category {
                padding: 3rem 0 2.5rem 0;
            }
            .hero-category h1 {
                font-size: 1.8rem;
            }
            .hero-category p {
                font-size: 1rem;
            }
            .section {
                padding: 2.5rem 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .step-list li {
                padding: 1.2rem 1rem 1.2rem 3.2rem;
            }
            .step-list li::before {
                left: 0.8rem;
                top: 1.1rem;
                width: 28px;
                height: 28px;
                font-size: 0.8rem;
            }
            .stat-card .stat-number {
                font-size: 1.8rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .footer {
                padding: 2.5rem 0 1.5rem 0;
            }
            .channel-tabs .nav-pills .nav-link {
                font-size: 0.8rem;
                padding: 0.25rem 0.85rem;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .hero-category h1 {
                font-size: 1.5rem;
            }
            .hero-category .badge-group .badge {
                font-size: 0.75rem;
                padding: 0.2rem 0.7rem;
            }
            .card-custom .card-body {
                padding: 1.25rem;
            }
            .search-box input {
                min-width: 80px;
                font-size: 0.8rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .faq-question {
                font-size: 0.9rem;
                padding: 1rem 1.2rem;
            }
            .faq-answer {
                padding: 0 1.2rem 1rem 1.2rem;
                font-size: 0.88rem;
            }
            .cta-section .btn-cta {
                padding: 0.6rem 2rem;
                font-size: 1rem;
            }
        }

        /* ===== 工具类 ===== */
        .bg-soft-primary {
            background: rgba(10, 75, 122, 0.04);
        }
        .text-accent {
            color: var(--accent);
        }
        .border-dash {
            border-style: dashed;
        }
        .gap-1 {
            gap: 0.5rem;
        }
        .gap-2 {
            gap: 1rem;
        }
        .gap-3 {
            gap: 1.5rem;
        }
        .mb-lg {
            margin-bottom: 3rem;
        }
        .mt-lg {
            margin-top: 3rem;
        }

/* roulang page: article */
:root {
            --primary: #0a2540;
            --primary-light: #1a3a5c;
            --secondary: #00b4d8;
            --secondary-light: #e6f7fc;
            --accent: #ff6b35;
            --bg: #f4f6f9;
            --bg-card: #ffffff;
            --text: #1a1a2e;
            --text-weak: #6c757d;
            --border: #e9ecef;
            --radius: 0.75rem;
            --radius-sm: 0.5rem;
            --shadow: 0 4px 24px rgba(10,37,64,0.06);
            --shadow-hover: 0 12px 36px rgba(10,37,64,0.12);
            --transition: 0.25s ease;
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
        }

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

        body {
            margin: 0;
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--secondary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        a:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            max-width: 1200px;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        /* ===== 导航 ===== */
        header {
            background: #fff;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(0,0,0,0.03);
            position: sticky;
            top: 0;
            z-index: 1050;
        }

        .navbar {
            padding-top: 0.65rem;
            padding-bottom: 0.65rem;
        }

        .navbar-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary) !important;
            letter-spacing: -0.01em;
        }
        .navbar-brand .brand-highlight {
            color: var(--secondary);
        }
        .navbar-brand:hover {
            color: var(--primary) !important;
        }

        .navbar-nav .nav-link {
            font-weight: 500;
            color: var(--text);
            padding: 0.5rem 1rem;
            border-radius: var(--radius-sm);
            transition: background var(--transition), color var(--transition);
        }
        .navbar-nav .nav-link:hover {
            background: var(--secondary-light);
            color: var(--primary);
        }
        .navbar-nav .nav-link.active {
            background: var(--primary);
            color: #fff !important;
        }

        .navbar-toggler {
            border: none;
            padding: 0.35rem 0.5rem;
            border-radius: var(--radius-sm);
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 2px var(--secondary);
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(10,37,64,0.7)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        .search-box {
            background: var(--bg);
            border-radius: 2rem;
            padding: 0.2rem 0.2rem 0.2rem 1rem;
            border: 1px solid var(--border);
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--secondary);
            box-shadow: 0 0 0 3px rgba(0,180,216,0.15);
        }
        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            padding: 0.35rem 0;
            min-width: 100px;
            font-size: 0.9rem;
            color: var(--text);
        }
        .search-box input::placeholder {
            color: var(--text-weak);
        }
        .search-box button {
            background: var(--primary);
            border: none;
            color: #fff;
            width: 34px;
            height: 34px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background var(--transition), transform var(--transition);
            cursor: pointer;
        }
        .search-box button:hover {
            background: var(--primary-light);
            transform: scale(1.05);
        }
        .search-box button:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 2px;
        }

        .nav-cta {
            background: var(--secondary) !important;
            color: #fff !important;
            padding: 0.4rem 1.2rem !important;
            border-radius: 2rem !important;
            font-weight: 600 !important;
            transition: background var(--transition), transform var(--transition) !important;
        }
        .nav-cta:hover {
            background: var(--primary) !important;
            transform: translateY(-1px);
        }

        /* ===== 文章主体 ===== */
        .article-main {
            padding: 2.5rem 0 3.5rem;
        }

        .article-breadcrumb {
            font-size: 0.85rem;
            color: var(--text-weak);
            margin-bottom: 1.25rem;
        }
        .article-breadcrumb a {
            color: var(--text-weak);
        }
        .article-breadcrumb a:hover {
            color: var(--secondary);
        }
        .article-breadcrumb .separator {
            margin: 0 0.4rem;
            color: #ccc;
        }
        .article-breadcrumb .current {
            color: var(--text);
            font-weight: 500;
        }

        .article-header {
            margin-bottom: 2rem;
        }
        .article-header h1 {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--primary);
            margin-bottom: 0.75rem;
            letter-spacing: -0.01em;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem 1.5rem;
            align-items: center;
            font-size: 0.9rem;
            color: var(--text-weak);
        }
        .article-meta .badge-category {
            background: var(--secondary-light);
            color: var(--secondary);
            font-weight: 600;
            padding: 0.2rem 0.9rem;
            border-radius: 2rem;
            font-size: 0.8rem;
        }
        .article-meta .badge-category i {
            margin-right: 0.25rem;
        }
        .article-meta .meta-date i {
            margin-right: 0.3rem;
        }

        .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: #2d3748;
            background: #fff;
            padding: 2rem 2.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }
        .article-body p {
            margin-bottom: 1.35rem;
        }
        .article-body h2,
        .article-body h3,
        .article-body h4 {
            color: var(--primary);
            margin-top: 2rem;
            margin-bottom: 0.8rem;
            font-weight: 700;
        }
        .article-body h2 {
            font-size: 1.55rem;
            border-bottom: 2px solid var(--secondary-light);
            padding-bottom: 0.45rem;
        }
        .article-body h3 {
            font-size: 1.25rem;
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 1.35rem;
            padding-left: 1.5rem;
        }
        .article-body li {
            margin-bottom: 0.4rem;
        }
        .article-body img {
            margin: 1.5rem auto;
            border-radius: var(--radius-sm);
            box-shadow: 0 2px 12px rgba(0,0,0,0.06);
        }
        .article-body blockquote {
            border-left: 4px solid var(--secondary);
            background: var(--secondary-light);
            padding: 1rem 1.25rem;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 1.5rem 0;
            font-style: italic;
            color: var(--primary-light);
        }
        .article-body a {
            color: var(--secondary);
            font-weight: 500;
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body a:hover {
            color: var(--primary);
        }
        .article-body code {
            background: #f1f3f5;
            padding: 0.15rem 0.5rem;
            border-radius: 4px;
            font-size: 0.9em;
        }
        .article-body pre {
            background: #1e293b;
            color: #e2e8f0;
            padding: 1.25rem;
            border-radius: var(--radius-sm);
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        .article-body pre code {
            background: transparent;
            padding: 0;
            color: inherit;
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
        }
        .article-body th,
        .article-body td {
            border: 1px solid var(--border);
            padding: 0.6rem 1rem;
            text-align: left;
        }
        .article-body th {
            background: var(--bg);
            font-weight: 600;
            color: var(--primary);
        }

        .article-tags {
            margin-top: 2rem;
        }
        .article-tags .tag {
            display: inline-block;
            background: var(--bg);
            color: var(--text-weak);
            padding: 0.25rem 0.9rem;
            border-radius: 2rem;
            font-size: 0.8rem;
            font-weight: 500;
            margin: 0.2rem 0.2rem;
            border: 1px solid var(--border);
            transition: background var(--transition), color var(--transition), border-color var(--transition);
        }
        .article-tags .tag:hover {
            background: var(--secondary-light);
            color: var(--secondary);
            border-color: var(--secondary);
        }
        .article-tags .tag i {
            margin-right: 0.3rem;
            font-size: 0.7rem;
        }

        .article-share {
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.75rem;
        }
        .article-share span {
            font-size: 0.9rem;
            color: var(--text-weak);
            font-weight: 500;
        }
        .article-share .share-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--bg);
            color: var(--text-weak);
            border: 1px solid var(--border);
            transition: background var(--transition), color var(--transition), transform var(--transition);
        }
        .article-share .share-btn:hover {
            background: var(--secondary);
            color: #fff;
            transform: translateY(-2px);
            border-color: var(--secondary);
        }
        .article-share .share-btn:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 2px;
        }

        /* 错误状态 */
        .error-block {
            text-align: center;
            padding: 4rem 1rem;
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .error-block i {
            font-size: 3.5rem;
            color: var(--text-weak);
            margin-bottom: 1rem;
            display: block;
        }
        .error-block h2 {
            font-size: 1.8rem;
            color: var(--primary);
            font-weight: 700;
            margin-bottom: 0.75rem;
        }
        .error-block p {
            color: var(--text-weak);
            font-size: 1.05rem;
            margin-bottom: 1.5rem;
        }
        .error-block .btn-home {
            background: var(--primary);
            color: #fff;
            padding: 0.6rem 2rem;
            border-radius: 2rem;
            font-weight: 600;
            border: none;
            transition: background var(--transition), transform var(--transition);
        }
        .error-block .btn-home:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            color: #fff;
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            padding: 2.5rem 0 3rem;
            background: #fff;
            border-top: 1px solid var(--border);
        }
        .related-section h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 1.5rem;
            position: relative;
            padding-left: 0.75rem;
        }
        .related-section h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0.2rem;
            bottom: 0.2rem;
            width: 4px;
            background: var(--secondary);
            border-radius: 2px;
        }

        .related-card {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 1.25rem 1.5rem;
            height: 100%;
            border: 1px solid var(--border);
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--secondary);
        }
        .related-card .rc-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 0.4rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .rc-title a {
            color: inherit;
        }
        .related-card .rc-title a:hover {
            color: var(--secondary);
        }
        .related-card .rc-meta {
            font-size: 0.8rem;
            color: var(--text-weak);
        }
        .related-card .rc-meta .rc-cat {
            background: var(--secondary-light);
            color: var(--secondary);
            padding: 0.1rem 0.6rem;
            border-radius: 2rem;
            font-weight: 500;
            font-size: 0.75rem;
        }
        .related-card .rc-meta .rc-date {
            margin-left: 0.5rem;
        }
        .related-card .rc-excerpt {
            font-size: 0.9rem;
            color: var(--text-weak);
            margin-top: 0.5rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ===== CTA 区块 ===== */
        .cta-section {
            padding: 3rem 0;
            background: var(--primary);
            color: #fff;
        }
        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        .cta-section p {
            font-size: 1.05rem;
            opacity: 0.85;
            margin-bottom: 1.5rem;
        }
        .cta-section .btn-cta {
            background: var(--accent);
            color: #fff;
            padding: 0.7rem 2.5rem;
            border-radius: 2rem;
            font-weight: 600;
            font-size: 1.05rem;
            border: none;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
        }
        .cta-section .btn-cta:hover {
            background: #e55a2b;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255,107,53,0.3);
            color: #fff;
        }
        .cta-section .btn-cta:focus-visible {
            outline: 2px solid #fff;
            outline-offset: 3px;
        }
        .cta-section .btn-outline-cta {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.4);
            padding: 0.6rem 2rem;
            border-radius: 2rem;
            font-weight: 600;
            transition: background var(--transition), border-color var(--transition), transform var(--transition);
        }
        .cta-section .btn-outline-cta:hover {
            background: rgba(255,255,255,0.1);
            border-color: #fff;
            transform: translateY(-2px);
            color: #fff;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: #0d1b2a;
            color: rgba(255,255,255,0.75);
            padding: 3rem 0 1.5rem;
            font-size: 0.92rem;
        }
        .footer .footer-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.5rem;
        }
        .footer .footer-brand .brand-highlight {
            color: var(--secondary);
        }
        .footer .footer-desc {
            color: rgba(255,255,255,0.6);
            max-width: 300px;
            line-height: 1.6;
        }
        .footer h6 {
            color: #fff;
            font-weight: 600;
            margin-bottom: 0.75rem;
            font-size: 0.95rem;
        }
        .footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer .footer-links li {
            margin-bottom: 0.4rem;
        }
        .footer .footer-links a {
            color: rgba(255,255,255,0.6);
            transition: color var(--transition);
        }
        .footer .footer-links a:hover {
            color: var(--secondary);
        }
        .footer .social-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            color: rgba(255,255,255,0.6);
            margin-right: 0.5rem;
            transition: background var(--transition), color var(--transition), transform var(--transition);
        }
        .footer .social-links a:hover {
            background: var(--secondary);
            color: #fff;
            transform: translateY(-2px);
        }
        .footer .footer-bottom {
            margin-top: 2rem;
            padding-top: 1.25rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            text-align: center;
            color: rgba(255,255,255,0.45);
            font-size: 0.85rem;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 992px) {
            .navbar-nav {
                padding-top: 0.75rem;
            }
            .navbar-nav .nav-link {
                padding: 0.5rem 0.75rem;
            }
            .search-box {
                margin-top: 0.5rem;
                width: 100%;
            }
            .search-box input {
                flex: 1;
                min-width: 0;
            }
            .article-header h1 {
                font-size: 1.7rem;
            }
            .article-body {
                padding: 1.25rem 1.25rem;
                font-size: 1rem;
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
        }

        @media (max-width: 768px) {
            .article-main {
                padding: 1.5rem 0 2rem;
            }
            .article-header h1 {
                font-size: 1.4rem;
            }
            .article-meta {
                font-size: 0.82rem;
                gap: 0.5rem 1rem;
            }
            .article-body {
                padding: 1rem 1rem;
                font-size: 0.95rem;
            }
            .article-body h2 {
                font-size: 1.25rem;
            }
            .article-body h3 {
                font-size: 1.1rem;
            }
            .related-section h2 {
                font-size: 1.25rem;
            }
            .cta-section {
                padding: 2rem 0;
            }
            .cta-section h2 {
                font-size: 1.2rem;
            }
            .cta-section .btn-cta,
            .cta-section .btn-outline-cta {
                font-size: 0.95rem;
                padding: 0.5rem 1.5rem;
            }
            .footer {
                padding: 2rem 0 1rem;
            }
            .footer .footer-desc {
                max-width: 100%;
            }
        }

        @media (max-width: 520px) {
            .article-header h1 {
                font-size: 1.2rem;
            }
            .article-body {
                padding: 0.75rem 0.75rem;
                font-size: 0.9rem;
            }
            .article-body h2 {
                font-size: 1.1rem;
            }
            .article-body h3 {
                font-size: 1rem;
            }
            .related-card .rc-title {
                font-size: 0.95rem;
            }
            .cta-section h2 {
                font-size: 1.05rem;
            }
            .cta-section p {
                font-size: 0.9rem;
            }
            .navbar-brand {
                font-size: 1.2rem;
            }
            .container {
                padding-left: 0.85rem;
                padding-right: 0.85rem;
            }
        }

        @media print {
            header,
            .cta-section,
            .footer {
                display: none;
            }
            .article-body {
                box-shadow: none;
                border: none;
                padding: 0;
            }
            .article-main {
                padding: 0;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #0d6efd;
            --primary-dark: #0a58ca;
            --primary-light: #e8f0fe;
            --secondary: #6c757d;
            --accent: #fd7e14;
            --accent-light: #fff3e0;
            --bg: #f8fafc;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --text: #1e293b;
            --text-light: #64748b;
            --text-muted: #94a3b8;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 4px 16px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.08);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.10);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --nav-bg: rgba(255, 255, 255, 0.96);
            --nav-border: rgba(226, 232, 240, 0.8);
            --hero-overlay: linear-gradient(135deg, rgba(13, 110, 253, 0.08) 0%, rgba(253, 126, 20, 0.06) 100%);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            font-size: 1rem;
            line-height: 1.65;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }
        @media (max-width: 576px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ===== Header / Nav ===== */
        header {
            background: var(--nav-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--nav-border);
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.02);
        }
        .navbar {
            padding-top: 0;
            padding-bottom: 0;
            min-height: 64px;
        }
        .navbar-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.02em;
            padding: 12px 0;
            margin-right: 2rem;
            transition: color var(--transition);
        }
        .navbar-brand:hover {
            color: var(--primary);
        }
        .brand-highlight {
            color: var(--primary);
        }
        .navbar-nav .nav-link {
            padding: 18px 16px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-light);
            border-bottom: 2px solid transparent;
            transition: color var(--transition), border-color var(--transition);
            position: relative;
        }
        .navbar-nav .nav-link:hover {
            color: var(--text);
        }
        .navbar-nav .nav-link.active {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }
        .navbar-toggler {
            border: none;
            padding: 6px 10px;
            border-radius: var(--radius-xs);
            background: var(--border-light);
            transition: background var(--transition);
        }
        .navbar-toggler:hover {
            background: var(--border);
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='%231e293b' stroke-width='2.2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
            width: 24px;
            height: 24px;
        }
        .search-box {
            background: var(--border-light);
            border-radius: 40px;
            padding: 2px 2px 2px 16px;
            border: 1px solid transparent;
            transition: border-color var(--transition), background var(--transition);
            max-width: 220px;
        }
        .search-box:focus-within {
            border-color: var(--primary);
            background: var(--bg-white);
        }
        .search-box input {
            border: none;
            background: transparent;
            padding: 6px 0;
            font-size: 0.88rem;
            color: var(--text);
            outline: none;
            width: 100%;
            min-width: 100px;
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }
        .search-box button {
            background: transparent;
            border: none;
            color: var(--text-light);
            padding: 6px 12px;
            border-radius: 40px;
            transition: color var(--transition), background var(--transition);
            cursor: pointer;
        }
        .search-box button:hover {
            color: var(--primary);
            background: rgba(13, 110, 253, 0.06);
        }
        .nav-cta {
            background: var(--primary);
            color: #fff !important;
            padding: 8px 22px !important;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.88rem;
            border: none;
            transition: background var(--transition), transform var(--transition);
            white-space: nowrap;
        }
        .nav-cta:hover {
            background: var(--primary-dark);
            color: #fff !important;
            transform: translateY(-1px);
        }

        @media (max-width: 991.98px) {
            .navbar {
                min-height: 56px;
            }
            .navbar-brand {
                font-size: 1.3rem;
                padding: 8px 0;
            }
            .navbar-nav .nav-link {
                padding: 12px 16px;
                border-bottom: none;
                border-left: 3px solid transparent;
            }
            .navbar-nav .nav-link.active {
                border-bottom: none;
                border-left-color: var(--primary);
                background: var(--primary-light);
                border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
            }
            .search-box {
                max-width: 100%;
                margin-top: 8px;
            }
            .nav-cta.d-none.d-lg-inline-flex {
                display: none !important;
            }
        }
        @media (max-width: 576px) {
            .navbar-brand {
                font-size: 1.15rem;
            }
            .navbar-nav .nav-link {
                font-size: 0.88rem;
                padding: 10px 14px;
            }
        }

        /* ===== Hero ===== */
        .category-hero {
            background: var(--hero-overlay);
            padding: 60px 0 50px;
            border-bottom: 1px solid var(--border-light);
            position: relative;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent), var(--primary));
            opacity: 0.3;
        }
        .category-hero h1 {
            font-size: 2.4rem;
            font-weight: 800;
            letter-spacing: -0.03em;
            color: var(--text);
            margin-bottom: 12px;
        }
        .category-hero h1 .highlight {
            color: var(--primary);
        }
        .category-hero .lead {
            font-size: 1.1rem;
            color: var(--text-light);
            max-width: 680px;
            line-height: 1.7;
        }
        .category-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 16px;
            border-radius: 40px;
            font-size: 0.82rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .category-hero .hero-stats {
            display: flex;
            gap: 32px;
            margin-top: 24px;
            flex-wrap: wrap;
        }
        .category-hero .hero-stats .stat-item {
            display: flex;
            flex-direction: column;
        }
        .category-hero .hero-stats .stat-number {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text);
            line-height: 1.2;
        }
        .category-hero .hero-stats .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        @media (max-width: 767.98px) {
            .category-hero {
                padding: 40px 0 36px;
            }
            .category-hero h1 {
                font-size: 1.7rem;
            }
            .category-hero .lead {
                font-size: 1rem;
            }
            .category-hero .hero-stats {
                gap: 20px;
            }
            .category-hero .hero-stats .stat-number {
                font-size: 1.3rem;
            }
        }
        @media (max-width: 576px) {
            .category-hero h1 {
                font-size: 1.4rem;
            }
            .category-hero .hero-stats {
                gap: 16px;
            }
        }

        /* ===== Section通用 ===== */
        .section {
            padding: 64px 0;
        }
        .section-alt {
            background: var(--bg-white);
        }
        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 8px;
            color: var(--text);
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--text-light);
            max-width: 640px;
            margin-bottom: 36px;
        }
        .section-divider {
            width: 48px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
            margin-bottom: 16px;
        }
        @media (max-width: 767.98px) {
            .section {
                padding: 44px 0;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .section-subtitle {
                font-size: 0.92rem;
                margin-bottom: 28px;
            }
        }

        /* ===== Cards ===== */
        .card-modern {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            transition: transform var(--transition), box-shadow var(--transition);
            overflow: hidden;
            height: 100%;
        }
        .card-modern:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .card-modern .card-body {
            padding: 24px 28px;
        }
        .card-modern .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 16px;
            color: #fff;
        }
        .card-modern .card-icon.blue {
            background: var(--primary);
        }
        .card-modern .card-icon.orange {
            background: var(--accent);
        }
        .card-modern .card-icon.teal {
            background: #0ea5e9;
        }
        .card-modern .card-icon.green {
            background: #10b981;
        }
        .card-modern .card-icon.purple {
            background: #8b5cf6;
        }
        .card-modern .card-icon.rose {
            background: #f43f5e;
        }
        .card-modern .card-title {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .card-modern .card-text {
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.6;
        }
        .card-modern .card-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 40px;
            background: var(--primary-light);
            color: var(--primary);
            margin-top: 12px;
        }
        .card-modern .card-footer-link {
            padding: 14px 28px;
            border-top: 1px solid var(--border-light);
            background: var(--bg);
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: space-between;
            transition: background var(--transition);
            text-decoration: none;
        }
        .card-modern .card-footer-link:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
        }
        @media (max-width: 576px) {
            .card-modern .card-body {
                padding: 18px 20px;
            }
            .card-modern .card-icon {
                width: 44px;
                height: 44px;
                font-size: 1.1rem;
                border-radius: 12px;
            }
        }

        /* ===== 步骤/流程 ===== */
        .step-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .step-list li {
            display: flex;
            gap: 18px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border-light);
            align-items: flex-start;
        }
        .step-list li:last-child {
            border-bottom: none;
        }
        .step-number {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 700;
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-top: 2px;
        }
        .step-content h5 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .step-content p {
            font-size: 0.9rem;
            color: var(--text-light);
            margin: 0;
        }

        /* ===== 安全检测表 ===== */
        .security-checklist {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .security-checklist li {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 18px;
            background: var(--bg);
            border-radius: var(--radius-sm);
            margin-bottom: 10px;
            border: 1px solid var(--border-light);
            transition: border-color var(--transition), background var(--transition);
        }
        .security-checklist li:hover {
            border-color: var(--primary);
            background: var(--primary-light);
        }
        .security-checklist li .check-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: #10b981;
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            flex-shrink: 0;
        }
        .security-checklist li .check-text {
            font-size: 0.92rem;
            font-weight: 500;
        }
        .security-checklist li .check-status {
            margin-left: auto;
            font-size: 0.8rem;
            color: var(--text-muted);
            background: var(--bg-white);
            padding: 2px 12px;
            border-radius: 40px;
            border: 1px solid var(--border);
            flex-shrink: 0;
        }

        /* ===== FAQ ===== */
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            background: var(--bg-white);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow);
        }
        .faq-question {
            padding: 16px 20px;
            font-weight: 600;
            font-size: 0.96rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            color: var(--text);
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: var(--border-light);
        }
        .faq-question .faq-toggle {
            font-size: 0.85rem;
            color: var(--text-light);
            transition: transform var(--transition);
        }
        .faq-item.active .faq-toggle {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 20px 16px;
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--primary) 0%, #0a58ca 100%);
            border-radius: var(--radius);
            padding: 48px 40px;
            color: #fff;
            text-align: center;
        }
        .cta-block h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-block p {
            font-size: 1rem;
            opacity: 0.9;
            max-width: 600px;
            margin: 0 auto 24px;
        }
        .cta-block .btn-cta {
            background: #fff;
            color: var(--primary);
            padding: 12px 36px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            transition: transform var(--transition), box-shadow var(--transition);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
            text-decoration: none;
            display: inline-block;
        }
        .cta-block .btn-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.18);
            color: var(--primary-dark);
        }
        .cta-block .btn-cta-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.5);
            padding: 10px 32px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: background var(--transition), border-color var(--transition);
            text-decoration: none;
            display: inline-block;
            margin-left: 12px;
        }
        .cta-block .btn-cta-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
        }
        @media (max-width: 576px) {
            .cta-block {
                padding: 32px 20px;
            }
            .cta-block h3 {
                font-size: 1.25rem;
            }
            .cta-block .btn-cta-outline {
                margin-left: 0;
                margin-top: 10px;
            }
        }

        /* ===== 标签/徽章 ===== */
        .badge-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 40px;
            font-size: 0.78rem;
            font-weight: 600;
            background: var(--border-light);
            color: var(--text-light);
            transition: background var(--transition), color var(--transition);
            cursor: default;
        }
        .badge-tag:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .badge-tag.primary {
            background: var(--primary-light);
            color: var(--primary);
        }
        .badge-tag.success {
            background: #d1fae5;
            color: #065f46;
        }
        .badge-tag.warning {
            background: #fef3c7;
            color: #92400e;
        }

        /* ===== 数据面板 ===== */
        .data-panel {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 32px;
            box-shadow: var(--shadow);
        }
        .data-panel .data-row {
            display: flex;
            justify-content: space-between;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-light);
            font-size: 0.92rem;
        }
        .data-panel .data-row:last-child {
            border-bottom: none;
        }
        .data-panel .data-label {
            color: var(--text-light);
        }
        .data-panel .data-value {
            font-weight: 600;
            color: var(--text);
        }
        .data-panel .data-value .trend-up {
            color: #10b981;
            font-size: 0.82rem;
            margin-left: 6px;
        }

        /* ===== Footer ===== */
        .footer {
            background: #1e293b;
            color: rgba(255, 255, 255, 0.85);
            padding: 48px 0 28px;
            margin-top: 16px;
        }
        .footer .footer-brand {
            font-size: 1.35rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .footer .footer-brand .brand-highlight {
            color: var(--primary);
        }
        .footer .footer-desc {
            font-size: 0.88rem;
            opacity: 0.7;
            line-height: 1.6;
            max-width: 320px;
        }
        .footer h6 {
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer .footer-links li {
            margin-bottom: 8px;
        }
        .footer .footer-links a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.88rem;
            transition: color var(--transition);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer .footer-links a:hover {
            color: #fff;
        }
        .footer .social-links {
            display: flex;
            gap: 12px;
        }
        .footer .social-links a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.7);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            transition: background var(--transition), color var(--transition);
            text-decoration: none;
        }
        .footer .social-links a:hover {
            background: var(--primary);
            color: #fff;
        }
        .footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            margin-top: 32px;
            font-size: 0.84rem;
            color: rgba(255, 255, 255, 0.45);
            text-align: center;
        }
        @media (max-width: 767.98px) {
            .footer {
                padding: 36px 0 20px;
            }
            .footer .footer-brand {
                font-size: 1.2rem;
            }
            .footer .footer-desc {
                max-width: 100%;
            }
        }
        @media (max-width: 576px) {
            .footer .social-links {
                justify-content: center;
            }
            .footer .footer-bottom {
                font-size: 0.78rem;
            }
        }

        /* ===== 实用工具 ===== */
        .gap-1 { gap: 0.25rem; }
        .gap-2 { gap: 0.5rem; }
        .gap-3 { gap: 1rem; }
        .gap-4 { gap: 1.5rem; }
        .flex-wrap { flex-wrap: wrap; }
        .align-items-center { align-items: center; }
        .justify-content-between { justify-content: space-between; }
        .text-center { text-align: center; }
        .mt-2 { margin-top: 0.5rem; }
        .mt-3 { margin-top: 1rem; }
        .mt-4 { margin-top: 1.5rem; }
        .mb-2 { margin-bottom: 0.5rem; }
        .mb-3 { margin-bottom: 1rem; }
        .mb-4 { margin-bottom: 1.5rem; }
        .mb-5 { margin-bottom: 2.5rem; }
        .d-flex { display: flex; }
        .d-none { display: none; }
        .d-inline-flex { display: inline-flex; }
        @media (min-width: 992px) {
            .d-lg-inline-flex { display: inline-flex; }
            .d-lg-none { display: none; }
        }

        /* ===== 页面加载动画 ===== */
        .fade-in-up {
            opacity: 0;
            transform: translateY(20px);
            animation: fadeInUp 0.5s ease forwards;
        }
        @keyframes fadeInUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .fade-in-up:nth-child(2) { animation-delay: 0.1s; }
        .fade-in-up:nth-child(3) { animation-delay: 0.2s; }
        .fade-in-up:nth-child(4) { animation-delay: 0.3s; }
        .fade-in-up:nth-child(5) { animation-delay: 0.4s; }

        /* ===== Bootstrap 覆盖 ===== */
        .btn-primary {
            background-color: var(--primary);
            border-color: var(--primary);
            border-radius: 40px;
            padding: 10px 28px;
            font-weight: 600;
            font-size: 0.92rem;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(13, 110, 253, 0.25);
        }
        .btn-outline-primary {
            border-radius: 40px;
            padding: 10px 28px;
            font-weight: 600;
            font-size: 0.92rem;
            border-width: 2px;
            transition: background var(--transition), transform var(--transition);
        }
        .btn-outline-primary:hover {
            transform: translateY(-1px);
        }
        .row.g-4 {
            --bs-gutter-y: 1.5rem;
        }
        @media (max-width: 576px) {
            .row.g-4 {
                --bs-gutter-y: 1rem;
                --bs-gutter-x: 1rem;
            }
        }