/* roulang page: index */
:root {
            --color-primary: #1B3A5C;
            --color-primary-dark: #0F2440;
            --color-primary-light: #2C5A8A;
            --color-accent: #D4A017;
            --color-accent-hover: #E8B830;
            --color-accent-light: #F5E6C8;
            --color-bg: #FFFFFF;
            --color-bg-alt: #F7F9FC;
            --color-bg-dark: #0F2440;
            --color-bg-dark-secondary: #162D4A;
            --color-text: #1a1a1a;
            --color-text-secondary: #4a5568;
            --color-text-muted: #7b8794;
            --color-text-light: #a0aec0;
            --color-text-on-dark: #e2e8f0;
            --color-border: #e2e8f0;
            --color-border-light: #edf2f7;
            --color-success: #22c55e;
            --color-warning: #f59e0b;
            --color-danger: #ef4444;
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow: 0 4px 16px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.10), 0 3px 10px rgba(0,0,0,0.05);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.12), 0 6px 16px rgba(0,0,0,0.06);
            --shadow-accent: 0 4px 20px rgba(212,160,23,0.25);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --transition-fast: 0.18s ease;
            --transition: 0.28s ease;
            --transition-slow: 0.4s ease;
            --max-width: 1200px;
            --nav-height: 72px;
            --section-gap: 80px;
            --section-gap-sm: 56px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover { color: var(--color-accent); }
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 3px;
        }

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

        button, .btn {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
            transition: all var(--transition);
        }
        button:focus-visible, .btn:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
        }

        input {
            font-family: inherit;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        input:focus {
            outline: none;
            border-color: var(--color-accent) !important;
            box-shadow: 0 0 0 3px rgba(212,160,23,0.12) !important;
        }

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

        /* ===== HEADER & NAVIGATION ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading);
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .header-logo .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        .header-logo:hover {
            color: var(--color-primary);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
        }
        .nav-links li { margin: 0; }
        .nav-links a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .nav-links a:hover {
            color: var(--color-primary);
            background: var(--color-bg-alt);
        }
        .nav-links a.active {
            color: var(--color-primary);
            background: var(--color-accent-light);
            font-weight: 600;
        }
        .nav-links a .nav-badge {
            font-size: 0.7rem;
            background: var(--color-accent);
            color: #fff;
            padding: 2px 7px;
            border-radius: 20px;
            font-weight: 600;
            letter-spacing: 0.3px;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 600;
            background: var(--color-accent);
            color: #fff !important;
            white-space: nowrap;
            transition: all var(--transition);
            box-shadow: var(--shadow-accent);
        }
        .nav-cta:hover {
            background: var(--color-accent-hover);
            box-shadow: 0 6px 24px rgba(212,160,23,0.35);
            transform: translateY(-1px);
            color: #fff !important;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--color-text);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }
        .nav-toggle:hover {
            background: var(--color-bg-alt);
        }

        /* ===== HERO ===== */
        .hero-section {
            position: relative;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            background-color: var(--color-primary-dark);
            min-height: 580px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,36,64,0.88) 0%, rgba(27,58,92,0.78) 40%, rgba(15,36,64,0.85) 100%);
            z-index: 1;
        }
        .hero-section .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            width: 100%;
        }
        .hero-content {
            color: #fff;
            padding: 20px 0;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(212,160,23,0.2);
            border: 1px solid rgba(212,160,23,0.4);
            color: var(--color-accent-hover);
            padding: 7px 16px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.4px;
            margin-bottom: 20px;
        }
        .hero-badge .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-accent);
            animation: pulse-dot 1.8s ease-in-out infinite;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.5); }
        }
        .hero-content h1 {
            font-family: var(--font-heading);
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: 1px;
            color: #fff;
        }
        .hero-content h1 .highlight {
            color: var(--color-accent-hover);
            position: relative;
        }
        .hero-content .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.82);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 480px;
        }
        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: var(--radius);
            font-size: 1rem;
            font-weight: 600;
            background: var(--color-accent);
            color: #fff;
            box-shadow: var(--shadow-accent);
            transition: all var(--transition);
            letter-spacing: 0.3px;
        }
        .btn-primary:hover {
            background: var(--color-accent-hover);
            box-shadow: 0 8px 30px rgba(212,160,23,0.4);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: var(--radius);
            font-size: 1rem;
            font-weight: 600;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.35);
            transition: all var(--transition);
            letter-spacing: 0.3px;
        }
        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255,255,255,0.08);
            color: #fff;
            transform: translateY(-2px);
        }
        .hero-visual {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .hero-card-stack {
            position: relative;
            width: 100%;
            max-width: 420px;
        }
        .hero-card-stack .stack-card {
            background: rgba(255,255,255,0.06);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255,255,255,0.15);
            border-radius: var(--radius-lg);
            padding: 28px;
            color: #fff;
            position: relative;
            z-index: 2;
        }
        .hero-card-stack .stack-card .stat-row {
            display: flex;
            gap: 24px;
            margin-top: 16px;
        }
        .hero-card-stack .stack-card .stat-item {
            text-align: center;
        }
        .hero-card-stack .stack-card .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-accent-hover);
            line-height: 1;
        }
        .hero-card-stack .stack-card .stat-label {
            font-size: 0.8rem;
            color: rgba(255,255,255,0.7);
            margin-top: 4px;
        }
        .hero-card-stack .stack-shadow {
            position: absolute;
            top: 16px;
            left: 16px;
            right: -16px;
            bottom: -16px;
            background: rgba(255,255,255,0.03);
            border-radius: var(--radius-lg);
            z-index: 1;
        }

        /* ===== SECTION COMMONS ===== */
        .section {
            padding: var(--section-gap) 0;
        }
        .section-alt {
            background: var(--color-bg-alt);
        }
        .section-dark {
            background: var(--color-bg-dark);
            color: var(--color-text-on-dark);
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header .section-tag {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-accent);
            letter-spacing: 0.5px;
            text-transform: uppercase;
            margin-bottom: 10px;
        }
        .section-header h2 {
            font-family: var(--font-heading);
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }
        .section-dark .section-header h2 {
            color: #fff;
        }
        .section-header .section-desc {
            font-size: 1.05rem;
            color: var(--color-text-muted);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-dark .section-header .section-desc {
            color: var(--color-text-light);
        }

        /* ===== FEATURE CARDS ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
            opacity: 0;
            transition: opacity var(--transition);
        }
        .feature-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: var(--color-border);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-card .feature-icon {
            width: 60px;
            height: 60px;
            border-radius: var(--radius);
            background: var(--color-accent-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.5rem;
            color: var(--color-primary);
            transition: all var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: var(--color-primary);
            color: #fff;
            transform: scale(1.05);
        }
        .feature-card h3 {
            font-family: var(--font-heading);
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-text);
        }
        .feature-card p {
            font-size: 0.93rem;
            color: var(--color-text-muted);
            line-height: 1.65;
        }

        /* ===== CATEGORY CARDS ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .category-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .category-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: var(--color-border);
        }
        .category-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/10;
            background: var(--color-bg-alt);
        }
        .category-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .category-card:hover .card-img-wrap img {
            transform: scale(1.06);
        }
        .category-card .card-img-wrap .card-img-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15,36,64,0.5) 0%, transparent 50%);
            z-index: 1;
        }
        .category-card .card-body {
            padding: 22px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .category-card .card-body h3 {
            font-family: var(--font-heading);
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--color-text);
        }
        .category-card .card-body p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 14px;
        }
        .category-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-primary);
            transition: gap var(--transition-fast);
        }
        .category-card:hover .card-link {
            gap: 10px;
            color: var(--color-accent);
        }

        /* ===== CMS LIST ===== */
        .cms-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
        }
        .cms-list-item {
            display: flex;
            align-items: center;
            gap: 20px;
            background: #fff;
            border-radius: var(--radius);
            padding: 18px 22px;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .cms-list-item:hover {
            box-shadow: var(--shadow);
            border-color: var(--color-border);
            transform: translateX(3px);
        }
        .cms-list-item .cms-meta {
            flex-shrink: 0;
            text-align: center;
            min-width: 60px;
        }
        .cms-list-item .cms-date {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1;
        }
        .cms-list-item .cms-month {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            margin-top: 2px;
        }
        .cms-list-item .cms-info {
            flex: 1;
            min-width: 0;
        }
        .cms-list-item .cms-info h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--color-text);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .cms-list-item .cms-info .cms-excerpt {
            font-size: 0.88rem;
            color: var(--color-text-muted);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .cms-list-item .cms-tag {
            flex-shrink: 0;
            display: inline-block;
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
            background: var(--color-accent-light);
            color: var(--color-primary);
        }
        .cms-empty {
            text-align: center;
            padding: 40px;
            color: var(--color-text-muted);
            font-size: 1rem;
        }

        /* ===== STATS ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-card {
            text-align: center;
            padding: 28px 16px;
            background: rgba(255,255,255,0.05);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255,255,255,0.1);
            transition: all var(--transition);
        }
        .stat-card:hover {
            background: rgba(255,255,255,0.1);
            transform: translateY(-3px);
        }
        .stat-card .stat-icon {
            font-size: 2rem;
            color: var(--color-accent-hover);
            margin-bottom: 10px;
        }
        .stat-card .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: #fff;
            line-height: 1;
            margin-bottom: 4px;
        }
        .stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-light);
        }

        /* ===== STEPS ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            position: relative;
        }
        .step-card {
            text-align: center;
            position: relative;
            z-index: 2;
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .step-number {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            color: #fff;
            font-size: 1.3rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 4px 16px rgba(27,58,92,0.3);
        }
        .step-card h3 {
            font-family: var(--font-heading);
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--color-text);
        }
        .step-card p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.6;
        }
        .steps-connector {
            display: none;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--color-border);
            box-shadow: var(--shadow-sm);
        }
        .faq-item summary {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--color-text);
            user-select: none;
        }
        .faq-item summary::-webkit-details-marker { display: none; }
        .faq-item summary::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 1rem;
            color: var(--color-text-muted);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
            margin-left: 12px;
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
            color: var(--color-accent);
        }
        .faq-item .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.93rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ===== CTA SECTION ===== */
        .cta-section {
            position: relative;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            background-color: var(--color-primary-dark);
            padding: 80px 0;
            text-align: center;
            overflow: hidden;
        }
        .cta-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,36,64,0.9) 0%, rgba(27,58,92,0.82) 100%);
            z-index: 1;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-family: var(--font-heading);
            font-size: 2.3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.78);
            margin-bottom: 28px;
            max-width: 550px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-section .btn-primary {
            font-size: 1.1rem;
            padding: 16px 36px;
            border-radius: var(--radius);
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: var(--color-bg-dark);
            color: var(--color-text-on-dark);
            padding: 48px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand .footer-logo {
            font-family: var(--font-heading);
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 0.88rem;
            color: var(--color-text-light);
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--color-accent-hover);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: var(--color-text-light);
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .hero-section .container {
                grid-template-columns: 1fr;
                gap: 32px;
                text-align: center;
            }
            .hero-content h1 { font-size: 2.4rem; }
            .hero-content .hero-subtitle { margin: 0 auto 28px; }
            .hero-buttons { justify-content: center; }
            .hero-visual { display: none; }
            .feature-grid { grid-template-columns: repeat(2, 1fr); }
            .category-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            :root { --section-gap: 60px; }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 60px;
                --section-gap: 48px;
            }
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                bottom: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 20px;
                gap: 4px;
                transform: translateX(100%);
                transition: transform var(--transition);
                z-index: 999;
                overflow-y: auto;
                box-shadow: var(--shadow-lg);
            }
            .nav-links.open {
                transform: translateX(0);
            }
            .nav-links a {
                padding: 14px 16px;
                font-size: 1rem;
                border-radius: var(--radius-sm);
            }
            .nav-cta {
                margin-top: 8px;
                justify-content: center;
            }
            .nav-toggle { display: block; }
            .hero-section { min-height: 420px; }
            .hero-content h1 { font-size: 1.9rem; }
            .hero-content .hero-subtitle { font-size: 1rem; }
            .feature-grid { grid-template-columns: 1fr; }
            .category-grid { grid-template-columns: 1fr; }
            .cms-list-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .cms-list-item .cms-meta {
                display: flex;
                align-items: baseline;
                gap: 8px;
            }
            .cms-list-item .cms-date { font-size: 1.2rem; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
            .stat-card .stat-number { font-size: 1.8rem; }
            .steps-grid { grid-template-columns: 1fr; }
            .section-header h2 { font-size: 1.7rem; }
            .cta-section h2 { font-size: 1.7rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .btn-primary, .btn-outline { padding: 12px 22px; font-size: 0.9rem; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .hero-content h1 { font-size: 1.55rem; }
            .hero-section { min-height: 360px; }
            .hero-buttons { flex-direction: column; align-items: center; }
            .hero-buttons .btn-primary,
            .hero-buttons .btn-outline { width: 100%; justify-content: center; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
            .stat-card { padding: 18px 10px; }
            .stat-card .stat-number { font-size: 1.5rem; }
            .section-header h2 { font-size: 1.45rem; }
            .cta-section h2 { font-size: 1.45rem; }
            .cta-section p { font-size: 0.95rem; }
        }

/* roulang page: article */
:root {
            --primary: #0d2b4e;
            --primary-light: #1a4068;
            --primary-dark: #091f38;
            --accent: #c8963e;
            --accent-hover: #b88735;
            --accent-light: #f5e6d0;
            --bg: #f8f9fb;
            --white: #ffffff;
            --text: #1e293b;
            --text-light: #64748b;
            --text-lighter: #94a3b8;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
            --shadow: 0 2px 12px rgba(0,0,0,0.06);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.09);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-heading: 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-body: 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-body);
            color: var(--text);
            background: var(--bg);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-light);
        }
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        button {
            cursor: pointer;
            font-family: var(--font-body);
        }
        button:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        input {
            font-family: var(--font-body);
        }

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

        /* ===== HEADER ===== */
        .site-header {
            background: var(--white);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-sm);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary);
            white-space: nowrap;
            letter-spacing: 0.5px;
            font-family: var(--font-heading);
        }
        .header-logo:hover {
            color: var(--primary-light);
        }
        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: var(--radius-sm);
            color: #fff;
            font-size: 1.05rem;
            flex-shrink: 0;
            box-shadow: 0 2px 8px rgba(13,43,78,0.25);
        }
        #mainNav {
            display: flex;
            align-items: center;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--primary);
            padding: 8px;
            line-height: 1;
            border-radius: var(--radius-sm);
        }
        .nav-links {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-links li {
            margin: 0;
        }
        .nav-links a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text);
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }
        .nav-links a:hover {
            background: var(--border-light);
            color: var(--primary);
        }
        .nav-links a.active {
            color: var(--primary);
            background: rgba(13,43,78,0.06);
            font-weight: 600;
        }
        .nav-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 0.7rem;
            background: #e53e3e;
            color: #fff;
            padding: 2px 7px;
            border-radius: 20px;
            font-weight: 700;
            line-height: 1.3;
            animation: badgePulse 2s ease-in-out infinite;
        }
        @keyframes badgePulse {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.7; }
        }
        .nav-cta {
            background: linear-gradient(135deg, var(--accent) 0%, #d4a843 100%) !important;
            color: #fff !important;
            font-weight: 600 !important;
            padding: 9px 20px !important;
            border-radius: 25px !important;
            box-shadow: 0 3px 12px rgba(200,150,62,0.35);
            transition: all var(--transition) !important;
        }
        .nav-cta:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(200,150,62,0.45) !important;
            background: linear-gradient(135deg, var(--accent-hover) 0%, #c8963e 100%) !important;
            color: #fff !important;
        }

        /* ===== ARTICLE BANNER ===== */
        .article-banner {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 40%, var(--primary-light) 100%);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: 60px 0 50px;
            position: relative;
            color: #fff;
            min-height: 220px;
            display: flex;
            align-items: center;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(13,43,78,0.82) 0%, rgba(13,43,78,0.9) 100%);
            z-index: 1;
        }
        .article-banner .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 0.875rem;
            color: rgba(255,255,255,0.75);
            margin-bottom: 20px;
        }
        .breadcrumb a {
            color: rgba(255,255,255,0.85);
            transition: color var(--transition);
        }
        .breadcrumb a:hover {
            color: #fff;
            text-decoration: underline;
        }
        .breadcrumb .sep {
            color: rgba(255,255,255,0.45);
            font-size: 0.7rem;
        }
        .breadcrumb .current {
            color: rgba(255,255,255,0.95);
            font-weight: 500;
        }
        .article-banner-title {
            font-size: 2rem;
            font-weight: 700;
            margin: 0 0 14px 0;
            line-height: 1.35;
            font-family: var(--font-heading);
            letter-spacing: 0.3px;
        }
        .article-meta-row {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.8);
        }
        .article-meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta-item i {
            font-size: 0.85rem;
            opacity: 0.75;
        }
        .article-cat-tag {
            display: inline-flex;
            align-items: center;
            padding: 5px 14px;
            background: rgba(255,255,255,0.18);
            border: 1px solid rgba(255,255,255,0.3);
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            color: #fff;
            backdrop-filter: blur(4px);
            -webkit-backdrop-filter: blur(4px);
        }

        /* ===== MAIN CONTENT AREA ===== */
        .article-main-section {
            padding: 50px 0 60px;
        }
        .article-content-wrapper {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 40px 44px;
            margin-bottom: 30px;
        }
        .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text);
        }
        .article-body h2 {
            font-size: 1.55rem;
            font-weight: 700;
            margin: 32px 0 14px;
            color: var(--primary);
            font-family: var(--font-heading);
        }
        .article-body h3 {
            font-size: 1.3rem;
            font-weight: 600;
            margin: 26px 0 10px;
            color: var(--text);
            font-family: var(--font-heading);
        }
        .article-body p {
            margin: 0 0 16px 0;
        }
        .article-body ul, .article-body ol {
            margin: 0 0 16px 0;
            padding-left: 22px;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body img {
            border-radius: var(--radius);
            margin: 20px 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body blockquote {
            border-left: 4px solid var(--accent);
            background: var(--accent-light);
            padding: 16px 22px;
            margin: 20px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: #5c3d1a;
            font-style: italic;
        }
        .article-body code {
            background: #f1f5f9;
            padding: 2px 7px;
            border-radius: 4px;
            font-size: 0.9em;
            color: #c7254e;
        }
        .article-body pre {
            background: #1e293b;
            color: #e2e8f0;
            padding: 20px 24px;
            border-radius: var(--radius);
            overflow-x: auto;
            margin: 20px 0;
            font-size: 0.9rem;
            line-height: 1.6;
        }
        .article-body pre code {
            background: none;
            color: inherit;
            padding: 0;
        }

        /* ===== SIDEBAR ===== */
        .article-sidebar {
            position: sticky;
            top: 84px;
        }
        .sidebar-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 28px 24px;
            margin-bottom: 24px;
        }
        .sidebar-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin: 0 0 16px 0;
            color: var(--primary);
            font-family: var(--font-heading);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h4::before {
            content: '';
            width: 4px;
            height: 20px;
            background: var(--accent);
            border-radius: 2px;
            flex-shrink: 0;
        }
        .sidebar-related-item {
            display: flex;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .sidebar-related-item:last-child {
            border-bottom: none;
        }
        .sidebar-related-item:hover {
            padding-left: 6px;
        }
        .sidebar-related-thumb {
            width: 64px;
            height: 48px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--border-light);
        }
        .sidebar-related-info {
            flex: 1;
            min-width: 0;
        }
        .sidebar-related-info a {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition);
        }
        .sidebar-related-info a:hover {
            color: var(--primary);
        }
        .sidebar-related-date {
            font-size: 0.78rem;
            color: var(--text-lighter);
            margin-top: 3px;
        }
        .sidebar-cta-box {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            text-align: center;
            color: #fff;
            box-shadow: var(--shadow-md);
        }
        .sidebar-cta-box h4 {
            color: #fff;
            margin-bottom: 10px;
            font-size: 1.1rem;
        }
        .sidebar-cta-box h4::before {
            display: none;
        }
        .sidebar-cta-box p {
            font-size: 0.9rem;
            opacity: 0.85;
            margin-bottom: 18px;
        }
        .sidebar-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 11px 26px;
            background: var(--accent);
            color: #fff;
            border-radius: 25px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            box-shadow: 0 4px 14px rgba(200,150,62,0.4);
        }
        .sidebar-cta-btn:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(200,150,62,0.5);
        }

        /* ===== RELATED POSTS SECTION ===== */
        .related-posts-section {
            padding: 50px 0 60px;
            background: var(--white);
            border-top: 1px solid var(--border);
        }
        .section-heading {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--primary);
            margin: 0 0 30px 0;
            font-family: var(--font-heading);
            text-align: center;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
        }
        .section-heading::before,
        .section-heading::after {
            content: '';
            width: 40px;
            height: 2px;
            background: var(--accent);
            border-radius: 1px;
        }
        .related-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: all var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
            border: 1px solid var(--border-light);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--border);
        }
        .related-card-img {
            width: 100%;
            height: 170px;
            object-fit: cover;
            background: var(--border-light);
            flex-shrink: 0;
        }
        .related-card-body {
            padding: 18px 18px 14px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card-body h5 {
            font-size: 0.98rem;
            font-weight: 600;
            margin: 0 0 8px 0;
            line-height: 1.45;
            flex: 1;
        }
        .related-card-body h5 a {
            color: var(--text);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition);
        }
        .related-card-body h5 a:hover {
            color: var(--primary);
        }
        .related-card-meta {
            font-size: 0.8rem;
            color: var(--text-lighter);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        /* ===== CTA SECTION ===== */
        .cta-section {
            padding: 60px 0;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            text-align: center;
            color: #fff;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(13,43,78,0.78);
            z-index: 1;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            font-family: var(--font-heading);
        }
        .cta-section p {
            font-size: 1.1rem;
            opacity: 0.9;
            margin-bottom: 28px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-btn-large {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 38px;
            background: var(--accent);
            color: #fff;
            border-radius: 30px;
            font-size: 1.1rem;
            font-weight: 600;
            transition: all var(--transition);
            box-shadow: 0 6px 22px rgba(200,150,62,0.45);
            letter-spacing: 0.5px;
        }
        .cta-btn-large:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(200,150,62,0.55);
        }
        .cta-btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 34px;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.5);
            border-radius: 30px;
            font-size: 1.05rem;
            font-weight: 500;
            transition: all var(--transition);
            margin-left: 14px;
        }
        .cta-btn-outline:hover {
            background: rgba(255,255,255,0.12);
            border-color: #fff;
            color: #fff;
        }

        /* ===== NOT FOUND ===== */
        .not-found-section {
            padding: 80px 0;
            text-align: center;
        }
        .not-found-icon {
            font-size: 5rem;
            color: var(--text-lighter);
            margin-bottom: 20px;
        }
        .not-found-section h2 {
            font-size: 1.8rem;
            color: var(--primary);
            margin-bottom: 10px;
            font-weight: 700;
        }
        .not-found-section p {
            color: var(--text-light);
            margin-bottom: 24px;
            font-size: 1.05rem;
        }
        .btn-back-home {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 12px 28px;
            background: var(--primary);
            color: #fff;
            border-radius: 25px;
            font-weight: 600;
            transition: all var(--transition);
            box-shadow: var(--shadow);
        }
        .btn-back-home:hover {
            background: var(--primary-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.8);
            padding: 50px 0 0;
        }
        .site-footer a {
            color: rgba(255,255,255,0.7);
        }
        .site-footer a:hover {
            color: #fff;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 30px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255,255,255,0.12);
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            opacity: 0.7;
            margin-top: 10px;
        }
        .footer-logo {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            font-family: var(--font-heading);
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 14px;
            font-family: var(--font-heading);
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 0.88rem;
            transition: all var(--transition);
        }
        .footer-bottom {
            text-align: center;
            padding: 20px 0;
            font-size: 0.85rem;
            opacity: 0.6;
        }
        .footer-bottom p {
            margin: 0;
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .article-content-wrapper {
                padding: 28px 24px;
            }
            .article-banner-title {
                font-size: 1.6rem;
            }
            .article-body {
                font-size: 1rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .sidebar-related-thumb {
                width: 52px;
                height: 40px;
            }
        }
        @media (max-width: 768px) {
            .site-header .container {
                height: 56px;
            }
            .nav-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 56px;
                left: 0;
                right: 0;
                background: var(--white);
                border-bottom: 2px solid var(--border);
                box-shadow: var(--shadow-md);
                padding: 8px 16px;
                gap: 2px;
                z-index: 99;
            }
            .nav-links.show {
                display: flex;
            }
            .nav-links a {
                padding: 12px 14px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-cta {
                justify-content: center;
                margin-top: 4px;
            }
            .article-banner {
                padding: 36px 0 30px;
                min-height: auto;
            }
            .article-banner-title {
                font-size: 1.35rem;
            }
            .article-meta-row {
                gap: 12px;
                font-size: 0.82rem;
            }
            .article-content-wrapper {
                padding: 20px 16px;
                border-radius: var(--radius);
            }
            .article-body {
                font-size: 0.96rem;
                line-height: 1.75;
            }
            .article-body h2 {
                font-size: 1.3rem;
            }
            .article-body h3 {
                font-size: 1.15rem;
            }
            .article-sidebar {
                position: static;
                margin-top: 24px;
            }
            .related-card-img {
                height: 140px;
            }
            .section-heading {
                font-size: 1.3rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
            .cta-btn-large {
                padding: 12px 26px;
                font-size: 1rem;
            }
            .cta-btn-outline {
                display: flex;
                margin-left: 0;
                margin-top: 12px;
                justify-content: center;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .breadcrumb {
                font-size: 0.8rem;
            }
        }
        @media (max-width: 520px) {
            .article-banner-title {
                font-size: 1.2rem;
            }
            .article-content-wrapper {
                padding: 16px 12px;
            }
            .article-body {
                font-size: 0.92rem;
            }
            .article-body h2 {
                font-size: 1.2rem;
                margin: 22px 0 10px;
            }
            .article-body h3 {
                font-size: 1.05rem;
                margin: 18px 0 8px;
            }
            .related-card-img {
                height: 120px;
            }
            .related-card-body {
                padding: 12px 12px 10px;
            }
            .related-card-body h5 {
                font-size: 0.88rem;
            }
            .sidebar-card {
                padding: 18px 14px;
            }
            .section-heading {
                font-size: 1.15rem;
            }
            .section-heading::before,
            .section-heading::after {
                width: 24px;
            }
            .cta-section h2 {
                font-size: 1.3rem;
            }
            .header-logo {
                font-size: 1rem;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.9rem;
            }
        }

/* roulang page: category1 */
/* ========== 设计变量 ========== */
        :root {
            --color-primary: #1a3a5c;
            --color-primary-light: #2c5f8a;
            --color-primary-dark: #0f2640;
            --color-accent: #e8a817;
            --color-accent-light: #f0c04a;
            --color-accent-dark: #c48a0f;
            --color-highlight: #3b82c4;
            --color-bg: #f5f6f8;
            --color-bg-alt: #eef1f5;
            --color-bg-dark: #1a2b3c;
            --color-white: #ffffff;
            --color-text: #2c3e50;
            --color-text-light: #5a6c7d;
            --color-text-muted: #8899aa;
            --color-border: #dce3ea;
            --color-border-light: #e8ecf1;
            --color-success: #10b981;
            --color-warning: #f59e0b;
            --color-danger: #ef4444;
            --color-tag-bg: #e8f0f8;
            --color-tag-text: #3b6fa0;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 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 16px 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(0,0,0,0.05);
            --shadow-hover: 0 8px 24px rgba(0,0,0,0.12), 0 3px 8px rgba(0,0,0,0.06);
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --max-width: 1200px;
            --header-height: 68px;
        }
        
        /* ========== 基础 Reset ========== */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }
        
        a {
            color: var(--color-primary-light);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-primary);
            text-decoration: none;
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        button, input, textarea {
            font-family: inherit;
            font-size: inherit;
        }
        
        ul, ol {
            list-style: none;
        }
        
        /* ========== 容器 ========== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        
        .container-narrow {
            max-width: 900px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* ========== Header / 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }
        
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        
        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-primary);
            white-space: nowrap;
            text-decoration: none;
            letter-spacing: 0.02em;
            transition: color var(--transition-fast);
        }
        .header-logo:hover {
            color: var(--color-primary-light);
        }
        
        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            border-radius: var(--radius-sm);
            color: #fff;
            font-size: 1.1rem;
        }
        
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
        }
        
        .nav-links li a {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-light);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .nav-links li a:hover {
            color: var(--color-primary);
            background: var(--color-bg-alt);
        }
        .nav-links li a.active {
            color: var(--color-primary);
            background: #e8f0f8;
            font-weight: 600;
        }
        .nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 1px;
        }
        
        .nav-cta {
            background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%) !important;
            color: #fff !important;
            font-weight: 600 !important;
            padding: 9px 20px !important;
            border-radius: var(--radius-md) !important;
            box-shadow: 0 2px 8px rgba(232,168,23,0.3);
            transition: all var(--transition-fast) !important;
        }
        .nav-cta:hover {
            box-shadow: 0 4px 16px rgba(232,168,23,0.45) !important;
            transform: translateY(-1px);
            background: linear-gradient(135deg, var(--color-accent-dark) 0%, var(--color-accent) 100%) !important;
            color: #fff !important;
        }
        
        .nav-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 0.68rem;
            font-weight: 700;
            padding: 2px 7px;
            border-radius: 20px;
            background: #ef4444;
            color: #fff;
            line-height: 1;
            animation: badgePulse 2s infinite;
        }
        
        @keyframes badgePulse {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.7; }
        }
        
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--color-text);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }
        .nav-toggle:hover {
            background: var(--color-bg-alt);
        }
        
        /* ========== 分类 Banner ========== */
        .category-banner {
            position: relative;
            background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 40%, var(--color-primary-light) 100%);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: 60px 0 50px;
            color: #fff;
            overflow: hidden;
        }
        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15,38,64,0.75) 0%, rgba(26,58,92,0.8) 100%);
            z-index: 1;
        }
        .category-banner .container {
            position: relative;
            z-index: 2;
        }
        
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: rgba(255,255,255,0.8);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: #fff;
        }
        .breadcrumb .separator {
            color: rgba(255,255,255,0.5);
            font-size: 0.7rem;
        }
        .breadcrumb .current {
            color: var(--color-accent-light);
            font-weight: 500;
        }
        
        .category-banner h1 {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
            line-height: 1.3;
        }
        .category-banner .banner-desc {
            font-size: 1.05rem;
            color: rgba(255,255,255,0.85);
            max-width: 600px;
            line-height: 1.6;
        }
        .category-banner .banner-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-top: 16px;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.7);
            flex-wrap: wrap;
        }
        .category-banner .banner-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        
        /* ========== 板块通用 ========== */
        .section {
            padding: 50px 0;
        }
        .section-alt {
            background: var(--color-white);
        }
        .section-dark {
            background: var(--color-bg-dark);
            color: #fff;
        }
        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
            letter-spacing: 0.02em;
        }
        .section-subtitle {
            font-size: 0.98rem;
            color: var(--color-text-muted);
            margin-bottom: 30px;
        }
        .section-dark .section-title {
            color: #fff;
        }
        .section-dark .section-subtitle {
            color: rgba(255,255,255,0.7);
        }
        
        /* ========== 文章列表 ========== */
        .content-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 36px;
            align-items: start;
        }
        
        .articles-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        
        .article-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            height: 100%;
            border: 1px solid var(--color-border-light);
        }
        .article-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: var(--color-border);
        }
        .article-card .card-image {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--color-bg-alt);
        }
        .article-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .article-card:hover .card-image img {
            transform: scale(1.04);
        }
        .article-card .card-tags {
            position: absolute;
            top: 12px;
            left: 12px;
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
            z-index: 2;
        }
        .article-card .card-tag {
            font-size: 0.75rem;
            padding: 4px 10px;
            border-radius: 20px;
            background: rgba(255,255,255,0.92);
            color: var(--color-primary-light);
            font-weight: 500;
            backdrop-filter: blur(4px);
        }
        .article-card .card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .article-card .card-title {
            font-size: 1.08rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 8px;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-card .card-title a {
            color: inherit;
            transition: color var(--transition-fast);
        }
        .article-card .card-title a:hover {
            color: var(--color-primary-light);
        }
        .article-card .card-excerpt {
            font-size: 0.88rem;
            color: var(--color-text-muted);
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .article-card .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--color-text-muted);
            padding-top: 12px;
            border-top: 1px solid var(--color-border-light);
        }
        .article-card .card-footer .read-time {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        
        /* ========== 侧边栏 ========== */
        .sidebar {
            position: sticky;
            top: calc(var(--header-height) + 20px);
        }
        .sidebar-widget {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            padding: 22px 20px;
            margin-bottom: 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
        }
        .sidebar-widget h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 14px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--color-bg-alt);
            letter-spacing: 0.02em;
        }
        .sidebar-widget .popular-item {
            display: flex;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
        }
        .sidebar-widget .popular-item:last-child {
            border-bottom: none;
        }
        .sidebar-widget .popular-item:hover {
            padding-left: 4px;
        }
        .sidebar-widget .popular-item .popular-thumb {
            width: 60px;
            height: 45px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            background: var(--color-bg-alt);
        }
        .sidebar-widget .popular-item .popular-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .sidebar-widget .popular-item .popular-info {
            flex: 1;
            min-width: 0;
        }
        .sidebar-widget .popular-item .popular-title {
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--color-text);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .sidebar-widget .popular-item .popular-title a {
            color: inherit;
        }
        .sidebar-widget .popular-item .popular-title a:hover {
            color: var(--color-primary-light);
        }
        .sidebar-widget .popular-item .popular-date {
            font-size: 0.75rem;
            color: var(--color-text-muted);
            margin-top: 4px;
        }
        
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag-cloud .tag-item {
            font-size: 0.8rem;
            padding: 5px 12px;
            border-radius: 20px;
            background: var(--color-tag-bg);
            color: var(--color-tag-text);
            font-weight: 500;
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        .tag-cloud .tag-item:hover {
            background: var(--color-primary-light);
            color: #fff;
        }
        
        /* ========== 分页 ========== */
        .pagination-wrapper {
            display: flex;
            justify-content: center;
            padding: 10px 0;
        }
        .custom-pagination {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .custom-pagination a,
        .custom-pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 38px;
            height: 38px;
            padding: 0 10px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            border: 1px solid var(--color-border);
            background: var(--color-white);
            color: var(--color-text-light);
        }
        .custom-pagination a:hover {
            background: var(--color-bg-alt);
            color: var(--color-primary);
            border-color: var(--color-primary-light);
        }
        .custom-pagination .current {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            font-weight: 600;
            box-shadow: var(--shadow-sm);
        }
        .custom-pagination .disabled {
            opacity: 0.4;
            pointer-events: none;
        }
        
        /* ========== 精选推荐 ========== */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .featured-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            border: 1px solid var(--color-border-light);
        }
        .featured-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .featured-card .featured-image {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--color-bg-alt);
        }
        .featured-card .featured-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .featured-card:hover .featured-image img {
            transform: scale(1.05);
        }
        .featured-card .featured-body {
            padding: 18px 20px 20px;
            text-align: center;
        }
        .featured-card .featured-body h5 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--color-text);
        }
        .featured-card .featured-body h5 a {
            color: inherit;
        }
        .featured-card .featured-body h5 a:hover {
            color: var(--color-primary-light);
        }
        .featured-card .featured-body p {
            font-size: 0.84rem;
            color: var(--color-text-muted);
            margin-bottom: 0;
        }
        .featured-badge {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 20px;
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
            color: #fff;
            margin-bottom: 8px;
        }
        
        /* ========== CTA 区域 ========== */
        .cta-section {
            background: linear-gradient(160deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-primary-light) 100%);
            position: relative;
            overflow: hidden;
            padding: 60px 0;
            text-align: center;
            color: #fff;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255,255,255,0.04);
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(255,255,255,0.03);
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255,255,255,0.8);
            margin-bottom: 28px;
            max-width: 550px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            font-size: 1.05rem;
            font-weight: 600;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
            color: #fff;
            border: none;
            cursor: pointer;
            transition: all var(--transition-base);
            box-shadow: 0 6px 20px rgba(232,168,23,0.4);
            text-decoration: none;
        }
        .btn-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(232,168,23,0.55);
            color: #fff;
        }
        
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 12px 28px;
            font-size: 0.95rem;
            font-weight: 500;
            border-radius: var(--radius-md);
            border: 2px solid rgba(255,255,255,0.5);
            color: #fff;
            background: transparent;
            cursor: pointer;
            transition: all var(--transition-base);
            text-decoration: none;
            margin-left: 12px;
        }
        .btn-outline-light:hover {
            background: rgba(255,255,255,0.1);
            border-color: #fff;
            color: #fff;
        }
        
        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--color-white);
            border-radius: var(--radius-md);
            margin-bottom: 10px;
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-sm);
        }
        .faq-item:hover {
            border-color: var(--color-border);
        }
        .faq-question {
            padding: 16px 22px;
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--color-text);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: color var(--transition-fast);
            user-select: none;
        }
        .faq-question:hover {
            color: var(--color-primary-light);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            transition: transform var(--transition-base);
            font-size: 0.85rem;
            color: var(--color-text-muted);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
            color: var(--color-accent);
        }
        .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open {
            border-color: var(--color-border);
            box-shadow: var(--shadow-md);
        }
        
        /* ========== Footer ========== */
        .site-footer {
            background: var(--color-primary-dark);
            color: rgba(255,255,255,0.8);
            padding: 50px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255,255,255,0.12);
        }
        .footer-logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }
        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.7;
            color: rgba(255,255,255,0.6);
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 0.86rem;
            color: rgba(255,255,255,0.6);
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--color-accent-light);
        }
        .footer-bottom {
            text-align: center;
            padding: 20px 0;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.5);
        }
        
        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .content-layout {
                grid-template-columns: 1fr 280px;
                gap: 24px;
            }
            .articles-grid {
                gap: 18px;
            }
            .featured-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }
            .category-banner h1 {
                font-size: 2rem;
            }
        }
        
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--color-white);
                flex-direction: column;
                padding: 16px 20px;
                gap: 4px;
                box-shadow: var(--shadow-lg);
                border-bottom: 1px solid var(--color-border);
                z-index: 999;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li a {
                width: 100%;
                padding: 12px 16px;
                font-size: 0.95rem;
            }
            .nav-links li a.active::after {
                display: none;
            }
            .nav-links li a.active {
                border-left: 3px solid var(--color-accent);
            }
            .nav-cta {
                text-align: center;
                justify-content: center;
                margin-top: 4px;
            }
            
            .content-layout {
                grid-template-columns: 1fr;
            }
            .articles-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .sidebar {
                position: static;
                margin-top: 24px;
            }
            .featured-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .category-banner {
                padding: 40px 0 36px;
            }
            .category-banner h1 {
                font-size: 1.6rem;
            }
            .category-banner .banner-desc {
                font-size: 0.9rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .section {
                padding: 36px 0;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section .btn-outline-light {
                margin-left: 0;
                margin-top: 10px;
            }
            .btn-cta {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
        }
        
        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .category-banner h1 {
                font-size: 1.35rem;
            }
            .breadcrumb {
                font-size: 0.78rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 22px;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .article-card .card-body {
                padding: 14px 16px 16px;
            }
            .article-card .card-title {
                font-size: 0.95rem;
            }
            .featured-card .featured-body {
                padding: 14px 16px;
            }
            .custom-pagination a,
            .custom-pagination span {
                min-width: 32px;
                height: 32px;
                font-size: 0.8rem;
                padding: 0 8px;
            }
            .sidebar-widget {
                padding: 16px 14px;
            }
        }

/* roulang page: category2 */
/* ==================== 设计变量 ==================== */
    :root {
        /* 主色系 - 深蓝安全色调 */
        --primary: #1a3a5c;
        --primary-light: #2c5282;
        --primary-dark: #0f2440;
        --accent: #e8a817;
        --accent-light: #f0c040;
        --accent-dark: #c48a10;
        --secondary: #10b981;
        --secondary-light: #34d399;
        --danger: #ef4444;
        --danger-light: #f87171;
        --warning: #f59e0b;
        --info: #3b82f6;

        /* 背景色 */
        --bg-white: #ffffff;
        --bg-light: #f8fafb;
        --bg-lighter: #f1f5f8;
        --bg-gray: #e8edf2;
        --bg-dark: #0f2440;
        --bg-dark-secondary: #1a3555;

        /* 文字色 */
        --text-primary: #1a1a2e;
        --text-secondary: #4a5568;
        --text-muted: #8899aa;
        --text-light: #a0b0c0;
        --text-white: #ffffff;
        --text-white-muted: #c8d6e0;

        /* 边框 */
        --border-light: #e2e8f0;
        --border-medium: #d0d8e0;
        --border-dark: #b0bcc8;

        /* 圆角 */
        --radius-sm: 6px;
        --radius-md: 10px;
        --radius-lg: 16px;
        --radius-xl: 20px;
        --radius-full: 50%;

        /* 阴影 */
        --shadow-sm: 0 1px 3px rgba(15, 36, 64, 0.06);
        --shadow-md: 0 4px 16px rgba(15, 36, 64, 0.10);
        --shadow-lg: 0 8px 32px rgba(15, 36, 64, 0.14);
        --shadow-xl: 0 16px 48px rgba(15, 36, 64, 0.18);
        --shadow-glow: 0 0 24px rgba(44, 130, 82, 0.20);

        /* 间距 */
        --space-xs: 8px;
        --space-sm: 14px;
        --space-md: 22px;
        --space-lg: 36px;
        --space-xl: 52px;
        --space-2xl: 72px;
        --space-3xl: 96px;

        /* 字体 */
        --font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
        --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Segoe UI', system-ui, sans-serif;

        /* 过渡 */
        --transition-fast: 0.18s ease;
        --transition-normal: 0.28s ease;
        --transition-slow: 0.40s ease;

        /* 容器 */
        --container-max: 1200px;
        --container-narrow: 900px;
    }

    /* ==================== 基础 Reset ==================== */
    *,
    *::before,
    *::after {
        box-sizing: border-box;
    }

    html {
        scroll-behavior: smooth;
        -webkit-text-size-adjust: 100%;
    }

    body {
        font-family: var(--font-family);
        font-size: 16px;
        line-height: 1.7;
        color: var(--text-primary);
        background-color: var(--bg-white);
        margin: 0;
        padding: 0;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        overflow-x: hidden;
    }

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

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

    a:hover {
        text-decoration: none;
    }

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

    button:focus-visible,
    a:focus-visible,
    input:focus-visible {
        outline: 3px solid var(--accent);
        outline-offset: 3px;
        border-radius: var(--radius-sm);
    }

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

    h1, h2, h3, h4, h5, h6 {
        font-family: var(--font-heading);
        margin: 0;
        line-height: 1.3;
    }

    /* ==================== 容器 ==================== */
    .container {
        max-width: var(--container-max);
        margin: 0 auto;
        padding: 0 24px;
        width: 100%;
    }

    .container-narrow {
        max-width: var(--container-narrow);
        margin: 0 auto;
        padding: 0 24px;
        width: 100%;
    }

    /* ==================== 站点 Header & 导航 ==================== */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 1000;
        background: rgba(255, 255, 255, 0.97);
        backdrop-filter: blur(18px);
        -webkit-backdrop-filter: blur(18px);
        border-bottom: 1px solid var(--border-light);
        box-shadow: var(--shadow-sm);
        transition: all var(--transition-normal);
        padding: 0;
        height: 68px;
        display: flex;
        align-items: center;
    }

    .site-header .container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        width: 100%;
        height: 100%;
    }

    .header-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 1.3rem;
        font-weight: 700;
        color: var(--primary);
        letter-spacing: 0.3px;
        white-space: nowrap;
        transition: opacity var(--transition-fast);
        flex-shrink: 0;
    }

    .header-logo:hover {
        opacity: 0.82;
        color: var(--primary-light);
    }

    .logo-icon {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        background: linear-gradient(135deg, var(--primary), var(--primary-light));
        border-radius: var(--radius-md);
        color: #fff;
        font-size: 1.15rem;
        box-shadow: 0 2px 8px rgba(26, 58, 92, 0.25);
    }

    #mainNav {
        display: flex;
        align-items: center;
        height: 100%;
    }

    .nav-links {
        display: flex;
        align-items: center;
        gap: 4px;
        height: 100%;
        margin: 0;
    }

    .nav-links li {
        margin: 0;
        height: 100%;
        display: flex;
        align-items: center;
    }

    .nav-links a {
        display: flex;
        align-items: center;
        gap: 6px;
        padding: 10px 16px;
        font-size: 0.95rem;
        font-weight: 500;
        color: var(--text-secondary);
        border-radius: var(--radius-sm);
        transition: all var(--transition-fast);
        white-space: nowrap;
        position: relative;
        height: auto;
    }

    .nav-links a:hover {
        color: var(--primary);
        background: var(--bg-lighter);
    }

    .nav-links a.active {
        color: var(--primary);
        font-weight: 600;
        background: rgba(26, 58, 92, 0.06);
    }

    .nav-links a.active::after {
        content: '';
        position: absolute;
        bottom: -1px;
        left: 50%;
        transform: translateX(-50%);
        width: 28px;
        height: 3px;
        background: var(--primary);
        border-radius: 3px 3px 0 0;
    }

    .nav-cta {
        background: var(--accent) !important;
        color: #1a1a2e !important;
        font-weight: 600 !important;
        padding: 10px 20px !important;
        border-radius: var(--radius-md) !important;
        transition: all var(--transition-fast) !important;
        box-shadow: 0 2px 10px rgba(232, 168, 23, 0.30);
    }

    .nav-cta:hover {
        background: var(--accent-light) !important;
        box-shadow: 0 4px 18px rgba(232, 168, 23, 0.45) !important;
        transform: translateY(-1px);
    }

    .nav-badge {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        background: var(--danger);
        color: #fff;
        font-size: 0.68rem;
        font-weight: 700;
        padding: 2px 7px;
        border-radius: 20px;
        line-height: 1.2;
        letter-spacing: 0.3px;
        animation: badgePulse 2.2s ease-in-out infinite;
    }

    @keyframes badgePulse {
        0%, 100% { transform: scale(1); }
        50% { transform: scale(1.10); }
    }

    .nav-toggle {
        display: none;
        background: none;
        border: none;
        font-size: 1.5rem;
        color: var(--text-primary);
        padding: 8px;
        cursor: pointer;
        border-radius: var(--radius-sm);
    }

    /* ==================== 分类 Banner ==================== */
    .category-banner {
        position: relative;
        padding: var(--space-3xl) 0 var(--space-2xl);
        background: linear-gradient(160deg, #0f2440 0%, #1a3a5c 40%, #1e456e 100%);
        overflow: hidden;
        min-height: 380px;
        display: flex;
        align-items: center;
    }

    .category-banner::before {
        content: '';
        position: absolute;
        inset: 0;
        background-image: url('/assets/images/backpic/back-2.png');
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
        opacity: 0.25;
        z-index: 0;
    }

    .category-banner::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        height: 140px;
        background: linear-gradient(to top, rgba(15, 36, 64, 0.85), transparent);
        z-index: 1;
    }

    .category-banner .container {
        position: relative;
        z-index: 2;
    }

    .breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 0.88rem;
        color: var(--text-white-muted);
        margin-bottom: var(--space-md);
        flex-wrap: wrap;
    }

    .breadcrumb a {
        color: var(--accent-light);
        transition: color var(--transition-fast);
    }

    .breadcrumb a:hover {
        color: #fff;
    }

    .breadcrumb .separator {
        color: var(--text-light);
        font-size: 0.7rem;
    }

    .breadcrumb .current {
        color: #fff;
        font-weight: 500;
    }

    .banner-content {
        max-width: 680px;
    }

    .banner-content .banner-icon {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 56px;
        height: 56px;
        background: rgba(255, 255, 255, 0.10);
        border: 2px solid rgba(255, 255, 255, 0.25);
        border-radius: var(--radius-lg);
        font-size: 1.6rem;
        color: var(--accent-light);
        margin-bottom: var(--space-md);
        backdrop-filter: blur(6px);
    }

    .banner-content h1 {
        font-size: 2.6rem;
        font-weight: 800;
        color: #fff;
        margin-bottom: var(--space-sm);
        letter-spacing: 0.5px;
        line-height: 1.25;
    }

    .banner-content .banner-desc {
        font-size: 1.12rem;
        color: var(--text-white-muted);
        line-height: 1.7;
        margin-bottom: var(--space-md);
    }

    .banner-stats {
        display: flex;
        gap: var(--space-lg);
        flex-wrap: wrap;
        margin-top: var(--space-md);
    }

    .banner-stat {
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .banner-stat .stat-icon {
        width: 40px;
        height: 40px;
        border-radius: var(--radius-full);
        background: rgba(255, 255, 255, 0.12);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--accent-light);
        font-size: 0.9rem;
    }

    .banner-stat .stat-num {
        font-size: 1.6rem;
        font-weight: 700;
        color: #fff;
        line-height: 1;
    }

    .banner-stat .stat-label {
        font-size: 0.82rem;
        color: var(--text-white-muted);
    }

    /* ==================== 板块通用样式 ==================== */
    .section {
        padding: var(--space-3xl) 0;
    }

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

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

    .section-dark {
        background: var(--bg-dark);
        color: #fff;
    }

    .section-header {
        text-align: center;
        margin-bottom: var(--space-2xl);
    }

    .section-header .section-tag {
        display: inline-block;
        font-size: 0.82rem;
        font-weight: 700;
        color: var(--primary);
        background: rgba(26, 58, 92, 0.08);
        padding: 6px 16px;
        border-radius: 30px;
        letter-spacing: 0.6px;
        text-transform: uppercase;
        margin-bottom: var(--space-sm);
    }

    .section-header h2 {
        font-size: 2rem;
        font-weight: 700;
        color: var(--text-primary);
        margin-bottom: var(--space-xs);
        letter-spacing: 0.2px;
    }

    .section-dark .section-header h2 {
        color: #fff;
    }

    .section-header .section-subtitle {
        font-size: 1.02rem;
        color: var(--text-muted);
        max-width: 560px;
        margin: 0 auto;
    }

    .section-dark .section-header .section-subtitle {
        color: var(--text-white-muted);
    }

    /* ==================== 安全功能卡片 ==================== */
    .security-cards-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 22px;
    }

    .security-card {
        background: var(--bg-white);
        border: 1px solid var(--border-light);
        border-radius: var(--radius-lg);
        padding: var(--space-lg) var(--space-md);
        transition: all var(--transition-normal);
        box-shadow: var(--shadow-sm);
        text-align: center;
        position: relative;
        overflow: hidden;
    }

    .security-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 4px;
        background: linear-gradient(90deg, var(--primary), var(--primary-light));
        opacity: 0;
        transition: opacity var(--transition-normal);
    }

    .security-card:hover {
        transform: translateY(-5px);
        box-shadow: var(--shadow-lg);
        border-color: var(--border-medium);
    }

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

    .security-card .card-icon-wrap {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 64px;
        height: 64px;
        border-radius: var(--radius-lg);
        margin-bottom: var(--space-md);
        font-size: 1.5rem;
        transition: all var(--transition-normal);
    }

    .security-card .card-icon-wrap.icon-blue {
        background: #eff6ff;
        color: #2563eb;
    }

    .security-card .card-icon-wrap.icon-green {
        background: #ecfdf5;
        color: #10b981;
    }

    .security-card .card-icon-wrap.icon-orange {
        background: #fff7ed;
        color: #f97316;
    }

    .security-card .card-icon-wrap.icon-purple {
        background: #f5f3ff;
        color: #7c3aed;
    }

    .security-card:hover .card-icon-wrap {
        transform: scale(1.06);
    }

    .security-card h3 {
        font-size: 1.15rem;
        font-weight: 700;
        color: var(--text-primary);
        margin-bottom: 8px;
    }

    .security-card p {
        font-size: 0.9rem;
        color: var(--text-muted);
        line-height: 1.6;
        margin: 0;
    }

    /* ==================== 安全设置步骤 ==================== */
    .steps-list {
        display: flex;
        flex-direction: column;
        gap: 0;
        max-width: 800px;
        margin: 0 auto;
    }

    .step-item {
        display: flex;
        gap: var(--space-md);
        padding: var(--space-md) 0;
        border-bottom: 1px solid var(--border-light);
        transition: all var(--transition-fast);
    }

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

    .step-number {
        flex-shrink: 0;
        width: 48px;
        height: 48px;
        border-radius: var(--radius-full);
        background: linear-gradient(135deg, var(--primary), var(--primary-light));
        color: #fff;
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: 700;
        font-size: 1.1rem;
        box-shadow: 0 3px 12px rgba(26, 58, 92, 0.25);
    }

    .step-content h4 {
        font-size: 1.08rem;
        font-weight: 700;
        color: var(--text-primary);
        margin-bottom: 4px;
    }

    .step-content p {
        font-size: 0.92rem;
        color: var(--text-muted);
        margin: 0;
        line-height: 1.6;
    }

    .step-content .step-tag {
        display: inline-block;
        font-size: 0.75rem;
        font-weight: 600;
        padding: 3px 10px;
        border-radius: 14px;
        margin-top: 6px;
    }

    .step-tag.recommended {
        background: #ecfdf5;
        color: #059669;
    }

    .step-tag.important {
        background: #fef3c7;
        color: #b45309;
    }

    /* ==================== 安全等级对比 ==================== */
    .compare-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 22px;
    }

    .compare-card {
        background: var(--bg-white);
        border: 2px solid var(--border-light);
        border-radius: var(--radius-lg);
        padding: var(--space-xl) var(--space-lg);
        text-align: center;
        transition: all var(--transition-normal);
        position: relative;
    }

    .compare-card.featured {
        border-color: var(--accent);
        box-shadow: var(--shadow-lg);
        transform: scale(1.03);
        z-index: 1;
    }

    .compare-card.featured .compare-badge {
        position: absolute;
        top: -14px;
        left: 50%;
        transform: translateX(-50%);
        background: var(--accent);
        color: #1a1a2e;
        font-weight: 700;
        font-size: 0.78rem;
        padding: 5px 16px;
        border-radius: 20px;
        white-space: nowrap;
        box-shadow: 0 3px 12px rgba(232, 168, 23, 0.35);
    }

    .compare-card:hover {
        border-color: var(--primary-light);
        box-shadow: var(--shadow-md);
    }

    .compare-card.featured:hover {
        border-color: var(--accent);
        box-shadow: var(--shadow-xl);
    }

    .compare-level {
        font-size: 0.85rem;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 0.8px;
        color: var(--text-muted);
        margin-bottom: 0;
    }

    .compare-card h3 {
        font-size: 1.4rem;
        font-weight: 700;
        color: var(--text-primary);
        margin-bottom: var(--space-sm);
    }

    .compare-features {
        list-style: none;
        padding: 0;
        margin: 0 0 var(--space-md);
        text-align: left;
    }

    .compare-features li {
        padding: 7px 0;
        font-size: 0.9rem;
        color: var(--text-secondary);
        display: flex;
        align-items: center;
        gap: 8px;
        border-bottom: 1px dashed var(--border-light);
    }

    .compare-features li:last-child {
        border-bottom: none;
    }

    .compare-features li i {
        font-size: 0.8rem;
        color: var(--secondary);
    }

    .compare-features li i.fa-xmark {
        color: var(--text-muted);
    }

    .compare-card .btn-compare {
        display: inline-block;
        padding: 10px 24px;
        border-radius: var(--radius-md);
        font-weight: 600;
        font-size: 0.92rem;
        transition: all var(--transition-fast);
    }

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

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

    .btn-solid {
        background: var(--accent);
        color: #1a1a2e;
        box-shadow: 0 3px 12px rgba(232, 168, 23, 0.30);
    }

    .btn-solid:hover {
        background: var(--accent-light);
        box-shadow: 0 6px 20px rgba(232, 168, 23, 0.45);
        transform: translateY(-2px);
    }

    /* ==================== 安全提示区块 ==================== */
    .alert-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .alert-card {
        display: flex;
        gap: var(--space-md);
        padding: var(--space-md) var(--space-lg);
        border-radius: var(--radius-lg);
        border-left: 4px solid;
        background: var(--bg-white);
        box-shadow: var(--shadow-sm);
        transition: all var(--transition-normal);
    }

    .alert-card:hover {
        box-shadow: var(--shadow-md);
        transform: translateX(3px);
    }

    .alert-card.alert-warning {
        border-left-color: var(--warning);
        background: #fffbeb;
    }

    .alert-card.alert-danger {
        border-left-color: var(--danger);
        background: #fef2f2;
    }

    .alert-card.alert-info {
        border-left-color: var(--info);
        background: #eff6ff;
    }

    .alert-card.alert-success {
        border-left-color: var(--secondary);
        background: #ecfdf5;
    }

    .alert-icon-wrap {
        flex-shrink: 0;
        width: 40px;
        height: 40px;
        border-radius: var(--radius-full);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1rem;
    }

    .alert-warning .alert-icon-wrap {
        background: #fef3c7;
        color: #b45309;
    }

    .alert-danger .alert-icon-wrap {
        background: #fee2e2;
        color: #dc2626;
    }

    .alert-info .alert-icon-wrap {
        background: #dbeafe;
        color: #2563eb;
    }

    .alert-success .alert-icon-wrap {
        background: #d1fae5;
        color: #059669;
    }

    .alert-body h4 {
        font-size: 1rem;
        font-weight: 700;
        color: var(--text-primary);
        margin-bottom: 3px;
    }

    .alert-body p {
        font-size: 0.88rem;
        color: var(--text-muted);
        margin: 0;
        line-height: 1.5;
    }

    /* ==================== FAQ ==================== */
    .faq-list {
        max-width: 780px;
        margin: 0 auto;
    }

    .faq-item {
        border: 1px solid var(--border-light);
        border-radius: var(--radius-md);
        margin-bottom: 12px;
        overflow: hidden;
        transition: all var(--transition-fast);
        background: var(--bg-white);
    }

    .faq-item:hover {
        border-color: var(--border-medium);
        box-shadow: var(--shadow-sm);
    }

    .faq-question {
        width: 100%;
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 18px 22px;
        background: none;
        font-size: 1.02rem;
        font-weight: 600;
        color: var(--text-primary);
        text-align: left;
        cursor: pointer;
        border: none;
        gap: 14px;
        transition: background var(--transition-fast);
    }

    .faq-question:hover {
        background: var(--bg-lighter);
    }

    .faq-question i {
        flex-shrink: 0;
        font-size: 0.85rem;
        color: var(--text-muted);
        transition: transform var(--transition-normal);
    }

    .faq-item.active .faq-question i {
        transform: rotate(180deg);
        color: var(--primary);
    }

    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-slow), padding var(--transition-slow);
    }

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

    .faq-answer-inner {
        padding: 0 22px 20px;
        font-size: 0.93rem;
        color: var(--text-secondary);
        line-height: 1.7;
    }

    /* ==================== CTA 板块 ==================== */
    .cta-section {
        background: linear-gradient(145deg, #1a3a5c 0%, #0f2440 60%, #0a1a2e 100%);
        padding: var(--space-3xl) 0;
        text-align: center;
        position: relative;
        overflow: hidden;
    }

    .cta-section::before {
        content: '';
        position: absolute;
        inset: 0;
        background-image: url('/assets/images/backpic/back-3.png');
        background-size: cover;
        background-position: center;
        opacity: 0.15;
        z-index: 0;
    }

    .cta-section .container {
        position: relative;
        z-index: 1;
    }

    .cta-section h2 {
        font-size: 2.1rem;
        font-weight: 800;
        color: #fff;
        margin-bottom: var(--space-sm);
    }

    .cta-section p {
        font-size: 1.05rem;
        color: var(--text-white-muted);
        margin-bottom: var(--space-lg);
        max-width: 540px;
        margin-left: auto;
        margin-right: auto;
    }

    .btn-cta-large {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 15px 36px;
        font-size: 1.05rem;
        font-weight: 700;
        background: var(--accent);
        color: #1a1a2e;
        border-radius: var(--radius-md);
        box-shadow: 0 6px 24px rgba(232, 168, 23, 0.40);
        transition: all var(--transition-normal);
        letter-spacing: 0.4px;
    }

    .btn-cta-large:hover {
        background: var(--accent-light);
        box-shadow: 0 10px 36px rgba(232, 168, 23, 0.55);
        transform: translateY(-3px);
        color: #1a1a2e;
    }

    /* ==================== 页脚 ==================== */
    .site-footer {
        background: var(--bg-dark);
        color: #fff;
        padding: var(--space-2xl) 0 var(--space-md);
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: var(--space-xl);
        margin-bottom: var(--space-xl);
    }

    .footer-brand .footer-logo {
        font-size: 1.3rem;
        font-weight: 700;
        color: #fff;
        margin-bottom: var(--space-sm);
        letter-spacing: 0.3px;
    }

    .footer-brand p {
        font-size: 0.9rem;
        color: var(--text-white-muted);
        line-height: 1.6;
        margin: 0;
    }

    .footer-col h4 {
        font-size: 0.95rem;
        font-weight: 700;
        color: #fff;
        margin-bottom: var(--space-sm);
        letter-spacing: 0.4px;
    }

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

    .footer-col ul li {
        margin-bottom: 7px;
    }

    .footer-col ul li a {
        font-size: 0.88rem;
        color: var(--text-white-muted);
        transition: color var(--transition-fast);
    }

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

    .footer-bottom {
        text-align: center;
        padding-top: var(--space-md);
        border-top: 1px solid rgba(255, 255, 255, 0.12);
    }

    .footer-bottom p {
        font-size: 0.82rem;
        color: var(--text-light);
        margin: 0;
    }

    /* ==================== 响应式 ==================== */
    @media (max-width: 1024px) {
        .security-cards-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .compare-grid {
            grid-template-columns: repeat(3, 1fr);
            gap: 14px;
        }
        .compare-card.featured {
            transform: scale(1.01);
        }
        .compare-card {
            padding: var(--space-md) var(--space-sm);
        }
        .banner-content h1 {
            font-size: 2.1rem;
        }
        .footer-grid {
            grid-template-columns: 1fr 1fr;
            gap: var(--space-lg);
        }
        .alert-grid {
            grid-template-columns: 1fr;
        }
    }

    @media (max-width: 768px) {
        .site-header {
            height: 60px;
        }

        .nav-toggle {
            display: block;
        }

        .nav-links {
            display: none;
            position: absolute;
            top: 60px;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.99);
            flex-direction: column;
            padding: var(--space-md);
            gap: 2px;
            border-bottom: 2px solid var(--border-light);
            box-shadow: var(--shadow-lg);
            z-index: 999;
            backdrop-filter: blur(16px);
        }

        .nav-links.show {
            display: flex;
        }

        .nav-links a {
            width: 100%;
            padding: 14px 18px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
        }

        .nav-links a.active::after {
            display: none;
        }

        .nav-links a.active {
            border-left: 3px solid var(--primary);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        }

        .nav-cta {
            text-align: center;
            justify-content: center;
            margin-top: 4px;
        }

        .category-banner {
            padding: var(--space-2xl) 0 var(--space-xl);
            min-height: 300px;
        }

        .banner-content h1 {
            font-size: 1.7rem;
        }

        .banner-content .banner-desc {
            font-size: 0.95rem;
        }

        .banner-stats {
            gap: var(--space-md);
        }

        .banner-stat .stat-num {
            font-size: 1.3rem;
        }

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

        .compare-grid {
            grid-template-columns: 1fr;
            gap: 18px;
        }

        .compare-card.featured {
            transform: none;
        }

        .section-header h2 {
            font-size: 1.55rem;
        }

        .section {
            padding: var(--space-2xl) 0;
        }

        .footer-grid {
            grid-template-columns: 1fr;
            gap: var(--space-md);
        }

        .step-item {
            flex-direction: column;
            gap: var(--space-sm);
        }

        .alert-card {
            flex-direction: column;
            gap: var(--space-sm);
        }

        .cta-section h2 {
            font-size: 1.6rem;
        }
    }

    @media (max-width: 520px) {
        .container {
            padding: 0 16px;
        }

        .banner-content h1 {
            font-size: 1.45rem;
        }

        .banner-stats {
            flex-direction: column;
            gap: 10px;
        }

        .section-header h2 {
            font-size: 1.35rem;
        }

        .security-card {
            padding: var(--space-md);
        }

        .compare-card {
            padding: var(--space-md);
        }

        .btn-cta-large {
            padding: 13px 26px;
            font-size: 0.95rem;
        }

        .faq-question {
            font-size: 0.93rem;
            padding: 14px 16px;
        }
    }

    /* ==================== Foundation 覆盖 ==================== */
    .grid-container {
        max-width: var(--container-max);
        padding: 0 24px;
    }

    @media (max-width: 520px) {
        .grid-container {
            padding: 0 16px;
        }
    }

    /* 辅助工具类 */
    .text-center { text-align: center; }
    .mt-sm { margin-top: var(--space-sm); }
    .mt-md { margin-top: var(--space-md); }
    .mt-lg { margin-top: var(--space-lg); }
    .mb-sm { margin-bottom: var(--space-sm); }
    .mb-md { margin-bottom: var(--space-md); }
    .mb-lg { margin-bottom: var(--space-lg); }

/* roulang page: category3 */
/* ========== 设计变量 ========== */
        :root {
            --color-primary: #1a6df5;
            --color-primary-dark: #1254c4;
            --color-primary-light: #e8f1fe;
            --color-accent: #f59e0b;
            --color-accent-dark: #d97706;
            --color-bg: #f8fafc;
            --color-bg-white: #ffffff;
            --color-bg-dark: #0f172a;
            --color-bg-section: #f1f5f9;
            --color-text: #1e293b;
            --color-text-secondary: #64748b;
            --color-text-muted: #94a3b8;
            --color-text-inverse: #ffffff;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-success: #10b981;
            --color-danger: #ef4444;
            --color-info: #3b82f6;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 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 16px 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, 0.05);
            --shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.12), 0 8px 20px rgba(0, 0, 0, 0.06);
            --transition-fast: 0.15s ease;
            --transition-normal: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --max-width: 1200px;
            --header-height: 68px;
        }

        /* ========== 基础 Reset 覆盖 ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

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

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

        a:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 3px;
            border-radius: 3px;
        }

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

        button {
            cursor: pointer;
            font-family: inherit;
        }

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

        h1, h2, h3, h4, h5, h6 {
            line-height: 1.3;
            margin-top: 0;
            color: var(--color-text);
        }

        /* ========== 容器 ========== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }

        .container-narrow {
            max-width: 900px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ========== 站点 Header ========== */
        .site-header {
            background: var(--color-bg-white);
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-height);
            display: flex;
            align-items: center;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-normal);
        }

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

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-text);
            white-space: nowrap;
            text-decoration: none;
            transition: opacity var(--transition-fast);
        }

        .header-logo:hover {
            opacity: 0.85;
            color: var(--color-text);
        }

        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--color-primary), #3b82f6);
            color: #fff;
            border-radius: var(--radius-md);
            font-size: 1.1rem;
        }

        #mainNav {
            display: flex;
            align-items: center;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .nav-links li {
            position: relative;
        }

        .nav-links a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            font-size: 0.925rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
        }

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

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

        .nav-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--color-accent);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 2px 7px;
            border-radius: 20px;
            line-height: 1;
            animation: badgePulse 2s infinite;
        }

        @keyframes badgePulse {
            0%, 100% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.1);
            }
        }

        .nav-cta {
            background: var(--color-primary) !important;
            color: #fff !important;
            padding: 9px 20px !important;
            border-radius: 25px !important;
            font-weight: 600 !important;
            transition: all var(--transition-normal) !important;
            box-shadow: 0 2px 8px rgba(26, 109, 245, 0.3);
        }

        .nav-cta:hover {
            background: var(--color-primary-dark) !important;
            color: #fff !important;
            box-shadow: 0 4px 16px rgba(26, 109, 245, 0.45) !important;
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--color-text);
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }

        .nav-toggle:hover {
            background: var(--color-bg-section);
        }

        /* ========== 页面 Banner ========== */
        .page-banner {
            position: relative;
            background: linear-gradient(160deg, #0f1d3a 0%, #162d5a 30%, #1a3d78 60%, #0f172a 100%);
            padding: 60px 0 50px;
            overflow: hidden;
            min-height: 240px;
            display: flex;
            align-items: center;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.2;
            z-index: 1;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(to top, var(--color-bg), transparent);
            z-index: 2;
        }

        .page-banner .container {
            position: relative;
            z-index: 3;
        }

        .page-banner-content {
            text-align: center;
            color: #fff;
        }

        .page-banner-content .banner-label {
            display: inline-block;
            background: rgba(255, 255, 255, 0.15);
            color: #e2e8f0;
            font-size: 0.85rem;
            font-weight: 500;
            padding: 6px 16px;
            border-radius: 25px;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .page-banner-content h1 {
            color: #fff;
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }

        .page-banner-content .banner-desc {
            color: #cbd5e1;
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.6;
        }

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

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.875rem;
            color: var(--color-text-muted);
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--color-text-secondary);
            text-decoration: none;
        }

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

        .breadcrumb .separator {
            color: var(--color-border);
            font-size: 0.7rem;
        }

        .breadcrumb .current {
            color: var(--color-primary);
            font-weight: 500;
        }

        /* ========== 板块间距 ========== */
        .section {
            padding: 56px 0;
        }

        .section-sm {
            padding: 36px 0;
        }

        .section-lg {
            padding: 72px 0;
        }

        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-text);
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-secondary);
            margin-bottom: 32px;
            max-width: 600px;
        }

        /* ========== 内容布局 ========== */
        .content-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 36px;
            align-items: start;
        }

        .content-main {
            min-width: 0;
        }

        .content-sidebar {
            position: sticky;
            top: calc(var(--header-height) + 24px);
        }

        /* ========== 筛选标签栏 ========== */
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 28px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--color-border-light);
        }

        .filter-tag {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 7px 16px;
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            background: var(--color-bg-white);
            border: 1px solid var(--color-border);
            border-radius: 25px;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
        }

        .filter-tag:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: var(--color-primary-light);
        }

        .filter-tag.active {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            font-weight: 600;
        }

        .filter-tag .tag-count {
            font-size: 0.75rem;
            opacity: 0.8;
        }

        /* ========== 文章卡片 ========== */
        .article-card {
            background: var(--color-bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            display: flex;
            flex-direction: column;
            border: 1px solid var(--color-border-light);
            margin-bottom: 24px;
        }

        .article-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: transparent;
        }

        .article-card-image {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/9;
            background: var(--color-bg-section);
        }

        .article-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

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

        .article-card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--color-accent);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 4px;
            z-index: 2;
        }

        .article-card-badge.featured {
            background: var(--color-primary);
        }

        .article-card-body {
            padding: 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .article-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--color-text-muted);
            margin-bottom: 8px;
            flex-wrap: wrap;
        }

        .article-card-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .article-card-title {
            font-size: 1.15rem;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.4;
            color: var(--color-text);
        }

        .article-card-title a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .article-card-title a:hover {
            color: var(--color-primary);
        }

        .article-card-excerpt {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 12px;
            border-top: 1px solid var(--color-border-light);
            font-size: 0.8rem;
        }

        .article-card-tags {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }

        .article-card-tag {
            font-size: 0.75rem;
            padding: 3px 10px;
            background: var(--color-bg-section);
            color: var(--color-text-secondary);
            border-radius: 15px;
            transition: all var(--transition-fast);
            text-decoration: none;
        }

        .article-card-tag:hover {
            background: var(--color-primary-light);
            color: var(--color-primary);
        }

        .article-card-readmore {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--color-primary);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition-fast);
        }

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

        /* ========== 侧边栏 ========== */
        .sidebar-card {
            background: var(--color-bg-white);
            border-radius: var(--radius-lg);
            padding: 22px;
            margin-bottom: 24px;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
        }

        .sidebar-card h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--color-primary);
            display: inline-block;
        }

        .sidebar-list li {
            padding: 8px 0;
            border-bottom: 1px solid var(--color-border-light);
        }

        .sidebar-list li:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .sidebar-list a {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            text-decoration: none;
            display: flex;
            align-items: flex-start;
            gap: 8px;
            transition: all var(--transition-fast);
            line-height: 1.4;
        }

        .sidebar-list a:hover {
            color: var(--color-primary);
            padding-left: 4px;
        }

        .sidebar-list a::before {
            content: '\f054';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.6rem;
            color: var(--color-primary);
            margin-top: 3px;
            flex-shrink: 0;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag-cloud a {
            font-size: 0.8rem;
            padding: 5px 13px;
            background: var(--color-bg-section);
            color: var(--color-text-secondary);
            border-radius: 20px;
            text-decoration: none;
            transition: all var(--transition-fast);
        }

        .tag-cloud a:hover {
            background: var(--color-primary);
            color: #fff;
        }

        .sidebar-subscribe {
            background: linear-gradient(135deg, var(--color-primary), #3b82f6);
            color: #fff;
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            text-align: center;
            border: none;
        }

        .sidebar-subscribe h4 {
            color: #fff;
            border-bottom-color: rgba(255, 255, 255, 0.4);
        }

        .sidebar-subscribe p {
            font-size: 0.85rem;
            opacity: 0.9;
            margin-bottom: 14px;
        }

        .sidebar-subscribe .sub-input {
            width: 100%;
            padding: 10px 14px;
            border-radius: 25px;
            border: none;
            font-size: 0.9rem;
            margin-bottom: 10px;
            outline: none;
        }

        .sidebar-subscribe .sub-btn {
            width: 100%;
            padding: 10px;
            border-radius: 25px;
            border: none;
            background: #fff;
            color: var(--color-primary);
            font-weight: 700;
            font-size: 0.9rem;
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .sidebar-subscribe .sub-btn:hover {
            background: #e8f1fe;
            transform: translateY(-1px);
        }

        /* ========== 分页 ========== */
        .pagination-wrap {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 6px;
            padding: 20px 0 0;
        }

        .pagination-wrap a,
        .pagination-wrap span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            text-decoration: none;
            border: 1px solid var(--color-border);
            color: var(--color-text-secondary);
            background: var(--color-bg-white);
        }

        .pagination-wrap a:hover {
            background: var(--color-primary-light);
            border-color: var(--color-primary);
            color: var(--color-primary);
        }

        .pagination-wrap .current {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            font-weight: 700;
        }

        .pagination-wrap .dots {
            border: none;
            background: transparent;
            color: var(--color-text-muted);
            width: auto;
            padding: 0 4px;
        }

        /* ========== 突出卡片（大图叙事） ========== */
        .featured-post-card {
            background: var(--color-bg-white);
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            display: grid;
            grid-template-columns: 1fr 1fr;
            margin-bottom: 28px;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-normal);
        }

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

        .featured-post-image {
            position: relative;
            overflow: hidden;
            min-height: 260px;
        }

        .featured-post-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

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

        .featured-post-body {
            padding: 28px 26px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .featured-post-body .featured-label {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--color-accent-dark);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 8px;
        }

        .featured-post-body h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .featured-post-body h3 a {
            color: inherit;
            text-decoration: none;
        }

        .featured-post-body h3 a:hover {
            color: var(--color-primary);
        }

        .featured-post-body p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin-bottom: 14px;
        }

        /* ========== CTA 板块 ========== */
        .cta-section {
            background: linear-gradient(160deg, #0f1d3a 0%, #162d5a 50%, #1a3d78 100%);
            position: relative;
            overflow: hidden;
            padding: 60px 0;
            text-align: center;
            color: #fff;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.15;
            z-index: 1;
        }

        .cta-section .container {
            position: relative;
            z-index: 3;
        }

        .cta-section h2 {
            color: #fff;
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .cta-section p {
            color: #cbd5e1;
            font-size: 1rem;
            max-width: 500px;
            margin: 0 auto 28px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: 28px;
            border: none;
            cursor: pointer;
            transition: all var(--transition-normal);
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(26, 109, 245, 0.35);
        }

        .btn-primary:hover {
            background: var(--color-primary-dark);
            box-shadow: 0 6px 22px rgba(26, 109, 245, 0.5);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.5);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
            border-radius: 30px;
        }

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

        .faq-item {
            border-bottom: 1px solid var(--color-border-light);
            padding: 16px 0;
        }

        .faq-question {
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: color var(--transition-fast);
            user-select: none;
        }

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

        .faq-question .faq-icon {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            transition: transform var(--transition-normal);
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-top: 10px;
        }

        /* ========== 统计条 ========== */
        .stats-strip {
            background: var(--color-bg-white);
            border-top: 1px solid var(--color-border-light);
            border-bottom: 1px solid var(--color-border-light);
            padding: 32px 0;
        }

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

        .stat-item .stat-number {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1;
        }

        .stat-item .stat-label {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin-top: 6px;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--color-bg-dark);
            color: #cbd5e1;
            padding: 48px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-logo {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .footer-brand p {
            font-size: 0.85rem;
            line-height: 1.6;
            opacity: 0.8;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 14px;
        }

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

        .footer-col ul li a {
            color: #94a3b8;
            font-size: 0.85rem;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            padding: 18px 0;
            text-align: center;
            font-size: 0.8rem;
            color: #64748b;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .content-layout {
                grid-template-columns: 1fr 280px;
                gap: 24px;
            }
            .featured-post-card {
                grid-template-columns: 1fr 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .page-banner-content h1 {
                font-size: 2rem;
            }
        }

        @media (max-width: 768px) {
            .content-layout {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .content-sidebar {
                position: static;
                top: auto;
            }
            .featured-post-card {
                grid-template-columns: 1fr;
            }
            .featured-post-image {
                min-height: 200px;
                aspect-ratio: 16/9;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--color-bg-white);
                flex-direction: column;
                padding: 12px 20px;
                gap: 2px;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-lg);
                z-index: 999;
            }
            .nav-links.show {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 11px 14px;
                border-radius: var(--radius-sm);
                font-size: 0.95rem;
            }
            .nav-cta {
                text-align: center;
                justify-content: center;
                margin-top: 6px;
            }
            .nav-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .page-banner {
                padding: 40px 0 36px;
                min-height: 180px;
            }
            .page-banner-content h1 {
                font-size: 1.6rem;
            }
            .page-banner-content .banner-desc {
                font-size: 0.9rem;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-item .stat-number {
                font-size: 1.5rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .section {
                padding: 36px 0;
            }
            .section-lg {
                padding: 48px 0;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .btn-lg {
                padding: 13px 26px;
                font-size: 0.95rem;
            }
        }

        @media (max-width: 520px) {
            .page-banner-content h1 {
                font-size: 1.35rem;
            }
            .filter-bar {
                gap: 5px;
            }
            .filter-tag {
                padding: 5px 11px;
                font-size: 0.78rem;
            }
            .article-card-body {
                padding: 14px 16px;
            }
            .article-card-title {
                font-size: 1rem;
            }
            .pagination-wrap a,
            .pagination-wrap span {
                width: 32px;
                height: 32px;
                font-size: 0.8rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .container {
                padding: 0 14px;
            }
            .header-logo {
                font-size: 1rem;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 0.9rem;
            }
        }

        /* ========== 动画 ========== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-in {
            animation: fadeInUp 0.5s ease forwards;
        }