/* roulang page: index */
:root {
            --primary: #2563eb;
            --primary-dark: #1e40af;
            --accent: #f59e0b;
            --accent-hover: #d97706;
            --bg-dark: #0b1120;
            --bg-section: #0f1a2d;
            --bg-card: rgba(255, 255, 255, 0.03);
            --text-primary: #f0f4fa;
            --text-secondary: #9aa8bd;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.25);
            --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.35);
            --transition: all 0.3s ease;
            --spacing-section: 5rem;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }

        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ==================== Header ==================== */
        .site-header {
            background: rgba(11, 18, 32, 0.95);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1.5rem;
            padding: 0.85rem 0;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: #fff;
            box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
        }

        .logo-text {
            font-size: 1.15rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

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

        .header-search {
            flex: 1;
            max-width: 460px;
            margin: 0 1.5rem;
        }

        .search-form {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 50px;
            padding: 0.55rem 1.3rem;
            transition: var(--transition);
        }

        .search-form:focus-within {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.15);
        }

        .search-form i {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-right: 0.7rem;
        }

        .search-form input {
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-primary);
            width: 100%;
            font-size: 0.9rem;
        }

        .search-form input::placeholder {
            color: var(--text-secondary);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.3rem;
            flex-shrink: 0;
        }

        .main-nav a {
            padding: 0.45rem 1rem;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            white-space: nowrap;
        }

        .main-nav a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }

        .main-nav a.active {
            color: var(--accent);
            background: rgba(245, 158, 11, 0.1);
        }

        .mobile-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border-subtle);
            border-radius: 8px;
            width: 40px;
            height: 40px;
            color: var(--text-primary);
            font-size: 1.1rem;
            cursor: pointer;
            transition: var(--transition);
            flex-shrink: 0;
        }

        .mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        /* 移动端导航抽屉 */
        .mobile-nav {
            display: none;
            background: rgba(11, 18, 32, 0.98);
            border-top: 1px solid var(--border-subtle);
            padding: 1rem 24px;
            flex-wrap: wrap;
            gap: 0.5rem;
        }

        .mobile-nav a {
            display: block;
            padding: 0.6rem 1rem;
            border-radius: 8px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            font-weight: 500;
            white-space: nowrap;
            transition: var(--transition);
        }

        .mobile-nav a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }

        .mobile-nav a.active {
            color: var(--accent);
            background: rgba(245, 158, 11, 0.1);
        }

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

        /* ==================== Hero ==================== */
        .hero {
            position: relative;
            padding: 7rem 0 5rem;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 18, 32, 0.92), rgba(11, 18, 32, 0.65), rgba(37, 99, 235, 0.2));
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 780px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(245, 158, 11, 0.15);
            border: 1px solid rgba(245, 158, 11, 0.3);
            border-radius: 50px;
            padding: 0.3rem 1.2rem;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--accent);
            margin-bottom: 1.5rem;
        }

        .hero-badge i {
            font-size: 0.75rem;
        }

        .hero h1 {
            font-size: 3.2rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 1rem;
        }

        .hero h1 .highlight {
            color: var(--accent);
        }

        .hero-subtitle {
            font-size: 1.25rem;
            color: var(--text-secondary);
            margin-bottom: 1.2rem;
            font-weight: 300;
        }

        .hero-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto 2.2rem;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 1rem;
            flex-wrap: wrap;
            margin-bottom: 3rem;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.7rem 1.8rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 20px rgba(37, 99, 235, 0.35);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(37, 99, 235, 0.45);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-subtle);
        }

        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-3px);
        }

        .btn-lg {
            padding: 0.85rem 2.4rem;
            font-size: 1.05rem;
        }

        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 2.5rem;
            flex-wrap: wrap;
            padding: 2rem 0 0;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

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

        .hero-stat-value {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.2;
        }

        .hero-stat-value span {
            color: var(--accent);
        }

        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-top: 0.2rem;
        }

        /* ==================== Section 通用 ==================== */
        .section {
            padding: var(--spacing-section) 0;
        }

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

        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 3rem;
        }

        .section-header .section-tag {
            display: inline-block;
            background: rgba(37, 99, 235, 0.12);
            border-radius: 50px;
            padding: 0.3rem 1.2rem;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 0.05em;
            margin-bottom: 0.8rem;
        }

        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 0.8rem;
        }

        .section-header p {
            color: var(--text-secondary);
            font-size: 1rem;
        }

        /* ==================== 核心说明 About ==================== */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3.5rem;
            align-items: center;
        }

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

        .about-image img {
            display: block;
            width: 100%;
            height: 400px;
            object-fit: cover;
        }

        .about-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(11, 18, 32, 0.4), transparent);
        }

        .about-content .section-tag {
            display: inline-block;
            background: rgba(37, 99, 235, 0.12);
            border-radius: 50px;
            padding: 0.3rem 1.2rem;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 0.05em;
            margin-bottom: 1rem;
        }

        .about-content h2 {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 1.2rem;
        }

        .about-content p {
            color: var(--text-secondary);
            margin-bottom: 1.2rem;
            line-height: 1.8;
        }

        .about-features-list {
            list-style: none;
            margin-top: 1.5rem;
        }

        .about-features-list li {
            display: flex;
            align-items: flex-start;
            gap: 0.8rem;
            padding: 0.6rem 0;
            font-size: 0.95rem;
            color: var(--text-secondary);
        }

        .about-features-list li i {
            color: var(--accent);
            margin-top: 0.2rem;
            font-size: 1rem;
            flex-shrink: 0;
        }

        /* ==================== 分类入口 Categories ==================== */
        .categories-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
        }

        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 340px;
            display: flex;
            align-items: flex-end;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            border: 1px solid var(--border-subtle);
        }

        .category-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
        }

        .category-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .category-card::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(11, 18, 32, 0.92), rgba(11, 18, 32, 0.3));
        }

        .category-card-content {
            position: relative;
            z-index: 2;
            padding: 2rem;
        }

        .category-card-content .category-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(245, 158, 11, 0.2);
            border: 1px solid rgba(245, 158, 11, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 1.2rem;
            margin-bottom: 1rem;
        }

        .category-card-content h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }

        .category-card-content p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-bottom: 1.2rem;
            line-height: 1.6;
        }

        .category-link {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            color: var(--accent);
            font-weight: 600;
            font-size: 0.9rem;
        }

        .category-link i {
            transition: transform 0.3s ease;
        }

        .category-link:hover i {
            transform: translateX(4px);
        }

        /* ==================== 最新资讯 Latest ==================== */
        .latest-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.8rem;
        }

        .latest-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 1.8rem;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .latest-card:hover {
            transform: translateY(-5px);
            border-color: rgba(245, 158, 11, 0.3);
            box-shadow: var(--shadow-md);
        }

        .card-tag {
            display: inline-block;
            background: rgba(37, 99, 235, 0.12);
            border-radius: 50px;
            padding: 0.25rem 1rem;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 0.8rem;
            align-self: flex-start;
        }

        .latest-card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: 0.6rem;
        }

        .latest-card h3 a {
            color: var(--text-primary);
        }

        .latest-card h3 a:hover {
            color: var(--accent);
        }

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

        .card-meta {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.8rem;
            color: var(--text-secondary);
            border-top: 1px solid var(--border-subtle);
            padding-top: 0.8rem;
        }

        .card-meta i {
            font-size: 0.75rem;
        }

        .empty-tip {
            grid-column: 1 / -1;
            text-align: center;
            padding: 3rem 2rem;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            color: var(--text-secondary);
            font-size: 1rem;
        }

        /* ==================== 功能特点 Features ==================== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 2rem 1.5rem;
            text-align: center;
            transition: var(--transition);
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(37, 99, 235, 0.3);
        }

        .feature-icon {
            width: 60px;
            height: 60px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.15), rgba(37, 99, 235, 0.05));
            border: 1px solid rgba(37, 99, 235, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.2rem;
            font-size: 1.5rem;
            color: var(--primary);
        }

        .feature-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
        }

        .feature-card p {
            color: var(--text-secondary);
            font-size: 0.85rem;
            line-height: 1.6;
        }

        /* ==================== 数据统计 Stats ==================== */
        .stats-section {
            background: linear-gradient(135deg, var(--bg-section), rgba(11, 18, 32, 0.95));
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            position: relative;
            overflow: hidden;
        }

        .stats-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(37, 99, 235, 0.15), transparent 70%);
            border-radius: 50%;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            position: relative;
            z-index: 2;
        }

        .stat-item {
            text-align: center;
            padding: 2rem 1rem;
        }

        .stat-item i {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 0.8rem;
        }

        .stat-item .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 0.3rem;
        }

        .stat-item .stat-label {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        /* ==================== 流程 Process ==================== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.8rem;
        }

        .process-step {
            text-align: center;
            padding: 2rem 1rem;
            position: relative;
        }

        .process-step::after {
            content: '';
            position: absolute;
            top: 50%;
            right: -15px;
            width: 30px;
            height: 2px;
            background: var(--border-subtle);
        }

        .process-step:last-child::after {
            display: none;
        }

        .step-number {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-size: 1.3rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem;
            box-shadow: 0 4px 15px rgba(37, 99, 235, 0.35);
        }

        .process-step h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 0.4rem;
        }

        .process-step p {
            color: var(--text-secondary);
            font-size: 0.85rem;
            line-height: 1.6;
        }

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

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 1rem;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(37, 99, 235, 0.3);
        }

        .faq-item summary {
            padding: 1.2rem 1.5rem;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            list-style: none;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.8rem;
            color: var(--text-secondary);
            transition: var(--transition);
        }

        .faq-item[open] summary::after {
            transform: rotate(180deg);
            color: var(--accent);
        }

        .faq-answer {
            padding: 0 1.5rem 1.2rem;
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.8;
        }

        /* ==================== CTA ==================== */
        .cta-section {
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            padding: 5rem 0;
            position: relative;
            border-radius: var(--radius-lg);
            margin: 0 24px;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 18, 32, 0.95), rgba(37, 99, 235, 0.6));
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        .cta-inner h2 {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }

        .cta-inner p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: 2rem;
        }

        .cta-inner .btn {
            font-size: 1.1rem;
            padding: 0.95rem 2.8rem;
        }

        /* ==================== Footer ==================== */
        .site-footer {
            background: rgba(8, 13, 24, 0.98);
            border-top: 1px solid var(--border-subtle);
            padding: 4rem 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 3rem;
            padding-bottom: 2.5rem;
            border-bottom: 1px solid var(--border-subtle);
        }

        .footer-brand .logo-text {
            font-size: 1.3rem;
        }

        .footer-brand p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-top: 1rem;
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 1.2rem;
            color: var(--text-primary);
        }

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

        .footer-col ul li {
            margin-bottom: 0.6rem;
        }

        .footer-col ul li a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            transition: var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-bottom {
            padding: 1.5rem 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
            font-size: 0.85rem;
            color: var(--text-secondary);
        }

        .footer-bottom a {
            color: var(--text-secondary);
        }

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

        /* ==================== 响应式 ==================== */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

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

            .process-step::after {
                display: none;
            }

            .about-grid {
                grid-template-columns: 1fr;
                gap: 2.5rem;
            }

            .about-image img {
                height: 320px;
            }

            .hero h1 {
                font-size: 2.6rem;
            }

            .header-search {
                max-width: 320px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 3.5rem;
            }

            .header-search {
                display: none;
            }

            .main-nav {
                display: none;
            }

            .mobile-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }

            .hero {
                padding: 5rem 0 3.5rem;
            }

            .hero h1 {
                font-size: 2rem;
            }

            .hero-subtitle {
                font-size: 1.05rem;
            }

            .hero-stats {
                gap: 1.5rem;
            }

            .hero-stat-value {
                font-size: 1.6rem;
            }

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

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

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

            .section-header h2 {
                font-size: 1.8rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .cta-section {
                margin: 0 16px;
                padding: 3.5rem 0;
            }

            .cta-inner h2 {
                font-size: 1.7rem;
            }

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

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

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

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

            .logo-text {
                font-size: 1rem;
            }

            .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 1rem;
            }

            .hero h1 {
                font-size: 1.7rem;
            }

            .hero-desc {
                font-size: 0.9rem;
            }

            .btn-lg {
                padding: 0.75rem 1.8rem;
                font-size: 0.9rem;
            }

            .hero-stats {
                flex-direction: column;
                gap: 1rem;
            }

            .category-card {
                min-height: 280px;
            }

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

            .cta-inner h2 {
                font-size: 1.5rem;
            }

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

/* roulang page: category1 */
/* ========== 设计变量 ========== */
        :root {
            --primary: #1a3a6b;
            --primary-dark: #0f2547;
            --primary-light: #274b8a;
            --accent: #c9a45c;
            --accent-light: #e0c48a;
            --accent-dark: #a8873f;
            --bg-main: #f5f7fb;
            --bg-white: #ffffff;
            --bg-dark: #0b1a33;
            --text-primary: #1a2b4a;
            --text-secondary: #5a6b85;
            --text-light: #8a97ad;
            --border-light: #e2e8f0;
            --border-medium: #cbd5e1;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-full: 50px;
            --shadow-sm: 0 2px 8px rgba(15, 37, 71, 0.06);
            --shadow-md: 0 6px 24px rgba(15, 37, 71, 0.08);
            --shadow-lg: 0 16px 40px rgba(15, 37, 71, 0.12);
            --space-sm: 8px;
            --space-md: 16px;
            --space-lg: 32px;
            --space-xl: 64px;
            --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }

        /* ========== 基础 Reset / Base ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-primary);
            background: var(--bg-main);
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.25s ease;
        }

        ul,
        ol {
            list-style: none;
        }

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

        /* ========== 容器 ========== */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: 80px 0;
            position: relative;
        }

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

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

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

        /* ========== 导航 Search-Dominant Header ========== */
        .site-header {
            background: var(--bg-white);
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 100;
            border-bottom: 1px solid var(--border-light);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            padding: 16px 24px;
            max-width: 1400px;
            margin: 0 auto;
            flex-wrap: wrap;
        }

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

        .logo-icon {
            width: 44px;
            height: 44px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ffffff;
            font-size: 20px;
            box-shadow: 0 4px 12px rgba(26, 58, 107, 0.3);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.5px;
            line-height: 1.4;
        }

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

        .nav-search-wrap {
            flex: 1;
            max-width: 520px;
            min-width: 260px;
            display: flex;
            align-items: center;
            background: var(--bg-main);
            border: 2px solid transparent;
            border-radius: var(--radius-full);
            padding: 4px 8px 4px 20px;
            transition: all 0.3s ease;
        }

        .nav-search-wrap:focus-within {
            border-color: var(--accent);
            background: var(--bg-white);
            box-shadow: 0 0 0 4px rgba(201, 164, 92, 0.15);
        }

        .nav-search-wrap .search-icon {
            color: var(--text-light);
            font-size: 15px;
            margin-right: 12px;
        }

        .nav-search-wrap input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 10px 0;
            font-size: 15px;
            color: var(--text-primary);
            outline: none;
            min-width: 0;
        }

        .nav-search-wrap input::placeholder {
            color: var(--text-light);
        }

        .nav-search-wrap .search-btn {
            background: var(--primary);
            color: #ffffff;
            border: none;
            border-radius: var(--radius-full);
            padding: 8px 22px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s ease;
            flex-shrink: 0;
        }

        .nav-search-wrap .search-btn:hover {
            background: var(--primary-light);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-left: auto;
            flex-wrap: wrap;
        }

        .main-nav a {
            padding: 8px 18px;
            border-radius: var(--radius-full);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all 0.3s ease;
            border: 1px solid transparent;
        }

        .main-nav a:hover {
            color: var(--primary);
            background: rgba(26, 58, 107, 0.06);
            border-color: var(--border-light);
        }

        .main-nav a.active {
            color: #ffffff;
            background: var(--primary);
            border-color: var(--primary);
            box-shadow: 0 4px 12px rgba(26, 58, 107, 0.25);
        }

        /* 移动端菜单按钮 */
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border-light);
            border-radius: 8px;
            width: 44px;
            height: 44px;
            font-size: 20px;
            color: var(--text-primary);
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
        }

        .mobile-menu-toggle:hover {
            background: var(--bg-main);
            border-color: var(--border-medium);
        }

        /* ========== Hero 首屏 ========== */
        .hero-section {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 120px 0;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(120deg, rgba(11, 26, 51, 0.92) 0%, rgba(11, 26, 51, 0.7) 45%, rgba(11, 26, 51, 0.35) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 700px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.22);
            border-radius: var(--radius-full);
            padding: 6px 18px;
            font-size: 13px;
            color: #e0c48a;
            font-weight: 600;
            margin-bottom: 28px;
            letter-spacing: 0.3px;
        }

        .hero-section h1 {
            font-size: 48px;
            font-weight: 900;
            color: #ffffff;
            line-height: 1.25;
            margin-bottom: 20px;
            letter-spacing: 1px;
        }

        .hero-section h1 span {
            color: var(--accent);
        }

        .hero-desc {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.82);
            line-height: 1.8;
            margin-bottom: 36px;
        }

        .hero-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: var(--radius-full);
            font-size: 16px;
            font-weight: 700;
            cursor: pointer;
            border: 2px solid transparent;
            transition: all 0.35s ease;
            letter-spacing: 0.5px;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
            color: #ffffff;
            box-shadow: 0 6px 20px rgba(201, 164, 92, 0.35);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(201, 164, 92, 0.45);
            color: #ffffff;
        }

        .btn-outline {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.5);
            color: #ffffff;
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #ffffff;
            color: #ffffff;
            transform: translateY(-3px);
        }

        .hero-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 60px;
            max-width: 480px;
            position: relative;
            z-index: 2;
        }

        .hero-stat-item {
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(6px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-md);
            padding: 18px 16px;
            text-align: center;
        }

        .hero-stat-num {
            font-size: 30px;
            font-weight: 900;
            color: var(--accent);
            line-height: 1.3;
        }

        .hero-stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.75);
            margin-top: 4px;
        }

        /* ========== 分类入口 Category Cards ========== */
        .category-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 36px 30px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all 0.35s ease;
            height: 100%;
            position: relative;
            overflow: hidden;
        }

        .category-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.4s ease;
        }

        .category-card:hover::before {
            transform: scaleX(1);
        }

        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(201, 164, 92, 0.3);
        }

        .cat-icon {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            margin-bottom: 22px;
        }

        .cat-icon.cat-1 {
            background: rgba(26, 58, 107, 0.1);
            color: var(--primary);
        }

        .cat-icon.cat-2 {
            background: rgba(201, 164, 92, 0.15);
            color: var(--accent-dark);
        }

        .category-card h3 {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .category-card p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .category-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            transition: all 0.3s ease;
        }

        .category-link:hover {
            gap: 12px;
            color: var(--accent-dark);
        }

        /* ========== 内容/资讯列表 ========== */
        .info-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all 0.35s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .info-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }

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

        .info-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

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

        .info-tag {
            display: inline-block;
            background: rgba(26, 58, 107, 0.08);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            margin-bottom: 14px;
            align-self: flex-start;
        }

        .info-body h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.5;
            margin-bottom: 10px;
        }

        .info-body p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.7;
            flex: 1;
        }

        .info-meta {
            margin-top: 16px;
            padding-top: 14px;
            border-top: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-light);
        }

        /* ========== 数据/流程 Section ========== */
        .process-section {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
        }

        .process-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(160deg, rgba(11, 26, 51, 0.95), rgba(15, 37, 71, 0.85));
        }

        .process-content {
            position: relative;
            z-index: 2;
        }

        .section-title {
            font-size: 32px;
            font-weight: 900;
            color: var(--text-primary);
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .section-title-light {
            color: #ffffff;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 640px;
            margin-bottom: 48px;
            line-height: 1.8;
        }

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

        .step-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-top: 60px;
        }

        .step-item {
            text-align: center;
            padding: 32px 20px;
            background: rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(8px);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255, 255, 255, 0.12);
            transition: all 0.35s ease;
            position: relative;
        }

        .step-item:hover {
            transform: translateY(-6px);
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(201, 164, 92, 0.4);
        }

        .step-num {
            font-size: 14px;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: 2px;
            margin-bottom: 16px;
        }

        .step-icon {
            font-size: 40px;
            color: var(--accent);
            margin-bottom: 20px;
            display: block;
        }

        .step-item h4 {
            color: #ffffff;
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .step-item p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            line-height: 1.6;
        }

        /* ========== 特色/亮点 ========== */
        .feature-item {
            display: flex;
            gap: 20px;
            padding: 30px;
            border-radius: var(--radius-lg);
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            transition: all 0.35s ease;
            height: 100%;
        }

        .feature-item:hover {
            box-shadow: var(--shadow-lg);
            border-color: rgba(201, 164, 92, 0.25);
            transform: translateY(-4px);
        }

        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ffffff;
            font-size: 22px;
            flex-shrink: 0;
            box-shadow: 0 4px 14px rgba(26, 58, 107, 0.25);
        }

        .feature-content h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

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

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 860px;
            margin: 0 auto 50px;
        }

        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            transition: box-shadow 0.35s ease;
        }

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

        .faq-item summary {
            padding: 22px 28px;
            cursor: pointer;
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            list-style: none;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: '+';
            font-size: 26px;
            font-weight: 400;
            color: var(--accent);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }

        .faq-item .faq-content {
            padding: 0 28px 22px;
            color: var(--text-secondary);
            line-height: 1.8;
            font-size: 15px;
        }

        /* ========== CTA 区域 ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
            border-radius: var(--radius-lg);
            padding: 64px 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
            position: relative;
            overflow: hidden;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(90deg, rgba(15, 37, 71, 0.95), rgba(39, 75, 138, 0.85));
        }

        .cta-content {
            position: relative;
            z-index: 2;
            flex: 1;
            min-width: 280px;
        }

        .cta-content h3 {
            font-size: 28px;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 10px;
            line-height: 1.3;
        }

        .cta-content p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.75);
        }

        .cta-actions {
            position: relative;
            z-index: 2;
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-cta {
            background: var(--accent);
            color: #ffffff;
            padding: 14px 32px;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 15px;
            cursor: pointer;
            transition: all 0.35s ease;
            border: 2px solid var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-cta:hover {
            background: transparent;
            color: var(--accent);
            transform: translateY(-3px);
            box-shadow: 0 8px 24px rgba(201, 164, 92, 0.3);
        }

        .btn-cta-outline {
            background: transparent;
            color: #ffffff;
            border: 2px solid rgba(255, 255, 255, 0.5);
            padding: 14px 32px;
            border-radius: var(--radius-full);
            font-weight: 600;
            cursor: pointer;
            transition: all 0.35s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-cta-outline:hover {
            border-color: #ffffff;
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-3px);
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 70px 0 0;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 50px;
            padding-bottom: 50px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .logo {
            margin-bottom: 18px;
        }

        .footer-brand .logo-text {
            color: #ffffff;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.9;
            margin-bottom: 24px;
            max-width: 380px;
        }

        .footer-col h4 {
            color: #ffffff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 22px;
            position: relative;
            padding-bottom: 12px;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .footer-col ul li {
            margin-bottom: 12px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .footer-col ul li a:hover {
            color: var(--accent);
            transform: translateX(4px);
        }

        .footer-bottom {
            padding: 24px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.4);
        }

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

        /* ========== 响应式断点 ========== */
        @media screen and (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }

            .section {
                padding: 64px 0;
            }

            .step-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .hero-section {
                padding: 90px 0;
            }

            .hero-section h1 {
                font-size: 38px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }
        }

        @media screen and (max-width: 768px) {
            .header-inner {
                flex-wrap: nowrap;
                padding: 12px 16px;
                gap: 8px;
            }

            .logo-text {
                font-size: 17px;
            }

            .logo-icon {
                width: 38px;
                height: 38px;
                font-size: 17px;
            }

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

            .nav-search-wrap {
                display: none;
            }

            .main-nav {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--bg-white);
                padding: 16px 20px;
                flex-direction: column;
                align-items: flex-start;
                box-shadow: var(--shadow-lg);
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                transform-origin: top;
                animation: navDrop 0.35s ease;
                max-height: calc(100vh - 64px);
                overflow-y: auto;
                display: none;
                z-index: 99;
            }

            .main-nav.open {
                display: flex;
            }

            @keyframes navDrop {
                from {
                    opacity: 0;
                    transform: translateY(-12px);
                }
                to {
                    opacity: 1;
                    transform: translateY(0);
                }
            }

            .main-nav a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-md);
                font-size: 16px;
            }

            .section {
                padding: 56px 0;
            }

            .section-title {
                font-size: 26px;
            }

            .hero-section {
                padding: 70px 0;
                text-align: center;
            }

            .hero-content {
                max-width: 100%;
            }

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

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

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

            .hero-stats {
                grid-template-columns: repeat(3, 1fr);
                gap: 10px;
                margin-top: 40px;
            }

            .hero-stat-num {
                font-size: 24px;
            }

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

            .cta-section {
                padding: 48px 32px;
                flex-direction: column;
                text-align: center;
            }

            .cta-content {
                text-align: center;
            }

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

        @media screen and (max-width: 520px) {
            .logo-text {
                font-size: 15px;
            }

            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 15px;
            }

            .hero-section h1 {
                font-size: 26px;
            }

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

            .hero-stats {
                grid-template-columns: 1fr;
            }

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

            .btn {
                padding: 12px 24px;
                font-size: 14px;
            }

            .feature-item {
                padding: 20px;
            }

            .faq-item summary {
                padding: 18px 20px;
                font-size: 15px;
            }

            .faq-item .faq-content {
                padding: 0 20px 18px;
                font-size: 14px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }

        /* ========== 辅助 Visibility 工具 ========== */
        .show-for-sr {
            position: absolute !important;
            width: 1px;
            height: 1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
            padding: 0;
            margin: -1px;
        }

        .text-accent {
            color: var(--accent) !important;
        }

        .mb-sm {
            margin-bottom: var(--space-sm) !important;
        }

        .mb-md {
            margin-bottom: var(--space-md) !important;
        }

        .mb-lg {
            margin-bottom: var(--space-lg) !important;
        }

/* roulang page: article */
:root {
    --primary: #0f172a;
    --primary-light: #1e293b;
    --accent: #3b82f6;
    --accent-dark: #2563eb;
    --accent-alt: #06b6d4;
    --gold: #f59e0b;
    --success: #10b981;
    --danger: #ef4444;
    --bg: #f1f5f9;
    --bg-dark: #0b1220;
    --card-bg: #ffffff;
    --text: #0f172a;
    --text-light: #334155;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --radius: 14px;
    --radius-lg: 20px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
    --shadow-md: 0 4px 20px rgba(0,0,0,.08);
    --shadow-lg: 0 16px 44px rgba(0,0,0,.12);
    --transition: all .25s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    margin: 0;
    padding: 0;
}

img { max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
ul, ol { list-style: none; margin: 0; padding: 0; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 阅读进度条 */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent-alt), #8b5cf6);
    z-index: 9999;
    width: 0;
    border-radius: 0 4px 4px 0;
    box-shadow: 0 0 12px rgba(59,130,246,.5);
}

/* ===== Header & Nav ===== */
.site-header {
    background: var(--primary);
    background-image: linear-gradient(135deg, #0b1220 0%, #0f172a 60%, #1a2744 100%);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 24px rgba(0,0,0,.25);
    border-bottom: 1px solid rgba(255,255,255,.06);
}

.header-inner {
    display: flex;
    align-items: center;
    gap: 28px;
    padding-top: 16px;
    padding-bottom: 16px;
    flex-wrap: wrap;
}

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

.logo-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--accent), var(--accent-alt));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 20px;
    box-shadow: 0 4px 12px rgba(59,130,246,.35);
}

.logo-text {
    color: #fff;
    font-size: 22px;
    font-weight: 800;
    letter-spacing: .5px;
    line-height: 1.2;
    white-space: nowrap;
}

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

.main-nav {
    display: flex;
    gap: 6px;
    margin-left: 8px;
    flex-wrap: wrap;
}

.main-nav a {
    color: rgba(255,255,255,.75);
    font-size: 15px;
    font-weight: 600;
    padding: 10px 16px;
    border-radius: 999px;
    transition: var(--transition);
    position: relative;
}

.main-nav a:hover {
    color: #fff;
    background: rgba(255,255,255,.08);
}

.main-nav a.active {
    color: #fff;
    background: var(--accent);
    box-shadow: 0 4px 14px rgba(59,130,246,.4);
}

.header-search {
    flex: 1;
    max-width: 380px;
    min-width: 220px;
    margin-left: auto;
    position: relative;
}

.header-search form {
    display: flex;
    align-items: center;
    background: rgba(255,255,255,.1);
    border: 1px solid rgba(255,255,255,.12);
    border-radius: 999px;
    padding: 0 16px;
    transition: var(--transition);
}

.header-search form:focus-within {
    background: #fff;
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(59,130,246,.2);
}

.header-search form:focus-within i {
    color: var(--accent);
}

.header-search i {
    color: rgba(255,255,255,.6);
    font-size: 14px;
    margin-right: 10px;
    transition: var(--transition);
}

.header-search input {
    background: transparent;
    border: none;
    outline: none;
    color: #fff;
    padding: 10px 0;
    width: 100%;
    font-size: 14px;
}

.header-search form:focus-within input {
    color: var(--text);
}

.header-search input::placeholder {
    color: rgba(255,255,255,.5);
}

.header-search form:focus-within input::placeholder {
    color: #94a3b8;
}

.nav-toggle {
    display: none;
    background: rgba(255,255,255,.1);
    border: none;
    border-radius: 10px;
    width: 42px;
    height: 42px;
    font-size: 18px;
    color: #fff;
    cursor: pointer;
    transition: var(--transition);
    align-items: center;
    justify-content: center;
}

.nav-toggle:hover {
    background: rgba(255,255,255,.2);
}

.mobile-menu {
    display: none;
    padding: 16px 24px 20px;
    border-top: 1px solid rgba(255,255,255,.08);
    background: var(--primary-light);
}

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

.mobile-nav {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 16px;
}

.mobile-nav a {
    color: rgba(255,255,255,.85);
    font-size: 16px;
    font-weight: 600;
    padding: 12px 14px;
    border-radius: 10px;
    transition: var(--transition);
}

.mobile-nav a:hover,
.mobile-nav a.active {
    background: rgba(255,255,255,.1);
    color: #fff;
}

.mobile-search form {
    display: flex;
    align-items: center;
    background: rgba(255,255,255,.1);
    border: 1px solid rgba(255,255,255,.12);
    border-radius: 999px;
    padding: 0 16px;
}

.mobile-search i {
    color: rgba(255,255,255,.6);
    margin-right: 10px;
}

.mobile-search input {
    background: transparent;
    border: none;
    outline: none;
    color: #fff;
    padding: 12px 0;
    width: 100%;
    font-size: 14px;
}

/* ===== 文章 Banner ===== */
.article-hero {
    position: relative;
    padding: 72px 0 84px;
    background-image: url('/assets/images/backpic/back-2.png');
    background-size: cover;
    background-position: center top;
    background-color: var(--primary);
}

.article-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(11,18,32,.92) 0%, rgba(15,23,42,.72) 60%, rgba(30,41,59,.55) 100%);
}

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

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    color: rgba(255,255,255,.65);
    font-size: 14px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.breadcrumb a {
    color: rgba(255,255,255,.75);
    transition: var(--transition);
}

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

.breadcrumb i {
    font-size: 12px;
    color: rgba(255,255,255,.4);
}

.article-hero .tag-row {
    display: flex;
    gap: 10px;
    margin-bottom: 18px;
    flex-wrap: wrap;
}

.article-hero .badge {
    background: linear-gradient(135deg, var(--accent), var(--accent-alt));
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    padding: 5px 14px;
    border-radius: 999px;
    box-shadow: 0 4px 12px rgba(59,130,246,.3);
}

.article-hero .badge.ghost {
    background: rgba(255,255,255,.12);
    border: 1px solid rgba(255,255,255,.2);
    box-shadow: none;
}

.article-hero h1 {
    color: #fff;
    font-size: clamp(26px, 4vw, 42px);
    font-weight: 800;
    line-height: 1.3;
    max-width: 860px;
    margin: 0 0 16px;
    text-shadow: 0 4px 20px rgba(0,0,0,.2);
}

.article-hero .article-meta {
    display: flex;
    gap: 20px;
    color: rgba(255,255,255,.7);
    font-size: 14px;
    flex-wrap: wrap;
}

.article-hero .article-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.article-hero .article-meta i {
    color: var(--accent-alt);
    width: 16px;
}

/* ===== 正文区 ===== */
.article-content-section {
    padding: 48px 0 72px;
    background: var(--bg);
}

.article-layout {
    align-items: flex-start;
}

.article-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: 40px 44px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border);
    position: relative;
}

.article-body {
    font-size: 16px;
    line-height: 1.9;
    color: var(--text-light);
    word-wrap: break-word;
}

.article-body h2 {
    font-size: 24px;
    color: var(--text);
    font-weight: 800;
    margin: 36px 0 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border);
    position: relative;
}

.article-body h2::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 56px;
    height: 2px;
    background: var(--accent);
}

.article-body h3 {
    font-size: 19px;
    color: var(--text);
    font-weight: 700;
    margin: 28px 0 12px;
}

.article-body p {
    margin-bottom: 18px;
}

.article-body ul, .article-body ol {
    margin: 0 0 20px 20px;
    padding: 0;
}

.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body li { margin-bottom: 8px; }

.article-body img {
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    margin: 20px 0;
}

.article-body blockquote {
    border-left: 4px solid var(--accent);
    background: #f8fafc;
    padding: 16px 20px;
    border-radius: 0 10px 10px 0;
    color: var(--text-muted);
    margin: 20px 0;
    font-style: normal;
}

.article-body a {
    color: var(--accent-dark);
    border-bottom: 1px solid transparent;
}

.article-body a:hover {
    border-bottom-color: var(--accent-dark);
}

.article-body code {
    background: #f1f5f9;
    padding: 2px 6px;
    border-radius: 6px;
    font-size: 14px;
}

.article-body pre {
    background: var(--primary);
    color: #e2e8f0;
    padding: 18px 20px;
    border-radius: 12px;
    overflow-x: auto;
    margin: 20px 0;
    font-size: 14px;
    line-height: 1.6;
}

.article-body table {
    width: 100%;
    margin: 20px 0;
    border-collapse: collapse;
    font-size: 15px;
}

.article-body th, .article-body td {
    border: 1px solid var(--border);
    padding: 10px 14px;
    text-align: left;
}

.article-body th {
    background: #f8fafc;
    font-weight: 700;
}

.article-body hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 30px 0;
}

.article-not-found {
    text-align: center;
    padding: 60px 0;
}

.article-not-found .icon-wrap {
    width: 90px;
    height: 90px;
    background: linear-gradient(135deg, #fee2e2, #fecaca);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    color: var(--danger);
    margin: 0 auto 24px;
}

.article-not-found h2 {
    font-size: 26px;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 12px;
}

.article-not-found p {
    color: var(--text-muted);
    margin-bottom: 24px;
}

/* 文章标签底部 */
.article-footer-tags {
    background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    border-radius: var(--radius);
    position: relative;
    margin-top: 36px;
    padding: 4px;
}

/* ===== 侧栏 ===== */
.article-sidebar {
    position: sticky;
    top: 84px;
}

.sidebar-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: 26px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    margin-bottom: 20px;
    transition: var(--transition);
}

.sidebar-card:hover {
    box-shadow: var(--shadow-md);
}

.sidebar-card .card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.sidebar-card .card-header i {
    color: var(--accent);
    font-size: 18px;
    width: 20px;
}

.sidebar-card .card-header h3 {
    font-size: 17px;
    font-weight: 800;
    color: var(--text);
    margin: 0;
}

.info-card p {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 0;
}

.info-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 0;
    border-bottom: 1px dashed var(--border);
    color: var(--text-light);
    font-size: 14px;
}

.info-list li:last-child {
    border-bottom: none;
}

.info-list i {
    color: var(--accent-alt);
    width: 16px;
    text-align: center;
    font-size: 13px;
}

.hot-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 0;
    border-bottom: 1px dashed var(--border);
    font-size: 14px;
}

.hot-list li:last-child {
    border-bottom: none;
}

.hot-num {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: #f1f5f9;
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: var(--transition);
}

.hot-list li:first-child .hot-num {
    background: linear-gradient(135deg, #f59e0b, #fbbf24);
    color: #fff;
    box-shadow: 0 4px 10px rgba(245,158,11,.3);
}

.hot-list li:nth-child(2) .hot-num {
    background: linear-gradient(135deg, #94a3b8, #cbd5e1);
    color: #fff;
}

.hot-list li:nth-child(3) .hot-num {
    background: linear-gradient(135deg, #f97316, #fb923c);
    color: #fff;
}

.hot-list a {
    color: var(--text-light);
    font-weight: 500;
    line-height: 1.5;
}

.hot-list a:hover {
    color: var(--accent-dark);
}

.quick-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.quick-links a {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    background: #f8fafc;
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 16px 10px;
    color: var(--text-light);
    font-size: 13px;
    font-weight: 600;
    text-align: center;
    transition: var(--transition);
}

.quick-links a i {
    font-size: 20px;
    color: var(--accent);
}

.quick-links a:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(59,130,246,.3);
}

.quick-links a:hover i {
    color: #fff;
}

/* ===== 相关推荐 ===== */
.related-section {
    padding: 72px 0;
    background: var(--card-bg);
    border-top: 1px solid var(--border);
}

.section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 36px;
    flex-wrap: wrap;
}

.section-head .section-title {
    font-size: 30px;
    font-weight: 800;
    color: var(--text);
    margin: 0;
    position: relative;
    padding-left: 18px;
    line-height: 1.3;
}

.section-head .section-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 5px;
    bottom: 5px;
    width: 4px;
    border-radius: 4px;
    background: linear-gradient(180deg, var(--accent), var(--accent-alt));
}

.section-head .section-sub {
    color: var(--text-muted);
    font-size: 14px;
    margin: 8px 0 0 18px;
}

.section-head .link-more {
    color: var(--accent-dark);
    font-size: 14px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: #fff;
    transition: var(--transition);
    white-space: nowrap;
}

.section-head .link-more:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.related-card {
    display: block;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    height: 100%;
    margin-bottom: 24px;
}

.related-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent);
}

.related-card .related-cover {
    height: 170px;
    background-size: cover;
    background-position: center;
    position: relative;
}

.related-card .related-cover::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(11,18,32,.25));
    transition: var(--transition);
}

.related-card:hover .related-cover::after {
    background: linear-gradient(180deg, transparent 20%, rgba(11,18,32,.5));
}

.related-card .related-cover .badge {
    position: absolute;
    top: 14px;
    left: 14px;
    z-index: 2;
    background: rgba(255,255,255,.92);
    color: var(--primary);
    font-size: 12px;
    font-weight: 800;
    padding: 4px 12px;
    border-radius: 999px;
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(4px);
}

.related-card .related-body {
    padding: 22px;
}

.related-card .related-body h3 {
    font-size: 17px;
    font-weight: 800;
    color: var(--text);
    line-height: 1.5;
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-card .related-body p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 14px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-card .related-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--text-muted);
    font-size: 13px;
}

.related-card .related-foot .num {
    color: var(--gold);
    font-weight: 700;
}

/* ===== FAQ ===== */
.faq-section {
    padding: 72px 0;
    background: var(--bg);
}

.faq-grid {
    max-width: 860px;
    margin: 0 auto;
}

.faq-item {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 14px;
    overflow: hidden;
    transition: var(--transition);
}

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

.faq-question {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 700;
    color: var(--text);
    cursor: pointer;
    transition: var(--transition);
    background: #fff;
    width: 100%;
    text-align: left;
    border: none;
}

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

.faq-question .faq-icon {
    width: 28px;
    height: 28px;
    background: #f1f5f9;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    color: var(--accent);
    flex-shrink: 0;
    transition: var(--transition);
}

.faq-item.active .faq-icon {
    background: var(--accent);
    color: #fff;
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s ease, padding .35s ease;
}

.faq-item.active .faq-answer {
    padding: 0 24px 20px 66px;
    max-height: 400px;
}

.faq-answer p {
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.8;
    margin: 0;
}

/* ===== CTA ===== */
.cta-section {
    padding: 72px 0;
    background-image: url('/assets/images/backpic/back-3.png');
    background-size: cover;
    background-position: center;
    position: relative;
}

.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(11,18,32,.94) 0%, rgba(15,23,42,.82) 50%, rgba(37,99,235,.6) 100%);
}

.cta-section .container {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 720px;
}

.cta-section h2 {
    color: #fff;
    font-size: clamp(24px, 3vw, 36px);
    font-weight: 800;
    margin-bottom: 12px;
    line-height: 1.35;
}

.cta-section p {
    color: rgba(255,255,255,.75);
    font-size: 16px;
    margin-bottom: 32px;
    line-height: 1.8;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 30px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 800;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    line-height: 1.2;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: #fff;
    box-shadow: 0 8px 24px rgba(59,130,246,.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 32px rgba(59,130,246,.5);
}

.btn-ghost {
    background: rgba(255,255,255,.12);
    color: #fff;
    border: 1.5px solid rgba(255,255,255,.4);
    backdrop-filter: blur(4px);
}

.btn-ghost:hover {
    background: rgba(255,255,255,.22);
    border-color: #fff;
    transform: translateY(-3px);
}

/* ===== 返回顶部 ===== */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 18px;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--accent);
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(59,130,246,.4);
}

/* ===== Footer ===== */
.site-footer {
    background: var(--bg-dark);
    color: rgba(255,255,255,.75);
    padding: 64px 0 24px;
    border-top: 1px solid rgba(255,255,255,.06);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 44px;
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255,255,255,.55);
    max-width: 360px;
}

.footer-col h4 {
    color: #fff;
    font-size: 16px;
    font-weight: 800;
    margin-bottom: 18px;
    position: relative;
    padding-bottom: 10px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 28px;
    height: 3px;
    background: var(--accent);
    border-radius: 3px;
}

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

.footer-col ul a {
    color: rgba(255,255,255,.6);
    font-size: 14px;
    transition: var(--transition);
}

.footer-col ul a:hover {
    color: #fff;
    padding-left: 6px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.1);
    padding-top: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 13px;
    color: rgba(255,255,255,.4);
}

.footer-bottom a {
    color: rgba(255,255,255,.5);
}

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

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .header-inner {
        gap: 16px;
    }
    .main-nav {
        order: 3;
        width: 100%;
        margin: 8px 0 0;
        justify-content: center;
    }
    .header-search {
        max-width: none;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 18px;
    }

    .header-inner {
        flex-wrap: nowrap;
        padding: 14px 18px;
    }

    .main-nav {
        display: none;
    }

    .header-search {
        display: none;
    }

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

    .article-hero {
        padding: 48px 0 64px;
    }

    .article-card {
        padding: 26px 22px;
    }

    .article-sidebar {
        margin-top: 28px;
    }

    .related-card {
        margin-bottom: 18px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

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

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 42px;
        height: 42px;
    }
}

@media (max-width: 520px) {
    .section-head {
        flex-direction: column;
        align-items: flex-start;
    }

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

    .cta-actions {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .article-hero .article-meta {
        gap: 12px;
        flex-direction: column;
    }

    .article-footer-tags {
        padding: 0;
    }

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

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

.article-hero .container {
    animation: fadeInUp .6s ease both;
}

.related-card, .faq-item, .sidebar-card {
    animation: fadeInUp .5s ease both;
}

/* roulang page: category2 */
:root {
            --primary: #123c8a;
            --primary-dark: #0d2d68;
            --primary-deep: #081b3c;
            --primary-light: #e8eef9;
            --accent: #06b6d4;
            --accent-light: #e0f7fa;
            --bg: #f4f7fc;
            --bg-soft: #eef1f7;
            --white: #ffffff;
            --text: #1e293b;
            --text-muted: #5b6b82;
            --text-light: #8a98ad;
            --border: #e2e8f0;
            --radius: 18px;
            --radius-sm: 12px;
            --radius-round: 999px;
            --shadow: 0 6px 30px rgba(18, 60, 138, 0.08);
            --shadow-hover: 0 18px 44px rgba(18, 60, 138, 0.16);
            --shadow-brand: 0 8px 24px rgba(18, 60, 138, 0.28);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --header-h: 76px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

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

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

        button, input {
            font-family: inherit;
            font-size: 100%;
            border: none;
            outline: none;
            background: none;
        }

        ul, ol {
            list-style: none;
        }

        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .grid-x.grid-margin-x {
            margin-right: -12px;
            margin-left: -12px;
        }

        .grid-x > .cell {
            padding-left: 12px;
            padding-right: 12px;
        }

        .grid-x > .cell .card-block {
            height: calc(100% - 24px);
            margin-bottom: 24px;
        }

        /* ---------- Header ---------- */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 120;
            background: rgba(255, 255, 255, 0.93);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 16px rgba(16, 42, 90, 0.05);
        }

        .header-inner {
            position: relative;
            display: flex;
            align-items: center;
            gap: 18px;
            min-height: var(--header-h);
            flex-wrap: wrap;
        }

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

        .logo-icon {
            width: 44px;
            height: 44px;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--primary) 0%, #1d6fc4 100%);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            box-shadow: var(--shadow-brand);
            transition: var(--transition);
        }

        .logo:hover .logo-icon {
            transform: translateY(-2px) rotate(-4deg);
        }

        .logo-text {
            font-size: 22px;
            font-weight: 800;
            letter-spacing: 0.4px;
            color: var(--text);
            line-height: 1.2;
            white-space: nowrap;
        }

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

        .header-search {
            flex: 1;
            min-width: 220px;
            max-width: 440px;
            margin: 0 auto;
        }

        .header-search form {
            display: flex;
            align-items: center;
            gap: 4px;
            background: var(--bg-soft);
            border: 1px solid var(--border);
            border-radius: var(--radius-round);
            padding: 5px 5px 5px 20px;
            transition: var(--transition);
        }

        .header-search form:focus-within {
            background: var(--white);
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(18, 60, 138, 0.1);
        }

        .header-search input[type="search"] {
            flex: 1;
            min-width: 0;
            height: 36px;
            border: none;
            background: transparent;
            color: var(--text);
            font-size: 14px;
        }

        .header-search input[type="search"]::-webkit-search-cancel-button {
            -webkit-appearance: none;
        }

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

        .header-search button {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary) 0%, #1d6fc4 100%);
            color: #fff;
            font-size: 14px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
            flex-shrink: 0;
        }

        .header-search button:hover {
            transform: scale(1.05);
            box-shadow: 0 4px 14px rgba(18, 60, 138, 0.3);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-shrink: 0;
        }

        .main-nav a {
            display: block;
            padding: 9px 18px;
            border-radius: var(--radius-round);
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            white-space: nowrap;
            transition: var(--transition);
        }

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

        .main-nav a.active {
            background: linear-gradient(135deg, var(--primary) 0%, #1d6fc4 100%);
            color: #fff;
            box-shadow: 0 6px 18px rgba(18, 60, 138, 0.28);
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: var(--bg-soft);
            color: var(--text);
            font-size: 18px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
            flex-shrink: 0;
        }

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

        /* ---------- Hero ---------- */
        .page-hero {
            position: relative;
            background-size: cover;
            background-position: center;
            padding: 84px 0 96px;
            color: #fff;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(125deg, rgba(8, 22, 54, 0.92) 0%, rgba(13, 45, 104, 0.78) 55%, rgba(6, 182, 212, 0.28) 100%);
            z-index: 1;
        }

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

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 28px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
        }

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

        .breadcrumb i {
            font-size: 10px;
            color: rgba(255, 255, 255, 0.4);
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: var(--radius-round);
            padding: 7px 16px;
            font-size: 13px;
            font-weight: 600;
            backdrop-filter: blur(8px);
            margin-bottom: 22px;
        }

        .hero-badge i {
            color: #35d0e8;
        }

        .page-hero h1 {
            font-size: 46px;
            font-weight: 800;
            line-height: 1.24;
            letter-spacing: 1px;
            margin-bottom: 16px;
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }

        .hero-lead {
            font-size: 17px;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.88);
            max-width: 640px;
            margin-bottom: 32px;
        }

        .hero-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 38px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            padding: 13px 28px;
            border-radius: var(--radius-round);
            font-size: 15px;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent) 0%, #0891b2 100%);
            color: #fff;
            box-shadow: 0 8px 24px rgba(6, 182, 212, 0.35);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 14px 32px rgba(6, 182, 212, 0.45);
        }

        .btn-ghost {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.35);
            color: #fff;
            backdrop-filter: blur(6px);
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.22);
            transform: translateY(-2px);
        }

        .hot-topics {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            padding-top: 26px;
            border-top: 1px solid rgba(255, 255, 255, 0.2);
        }

        .hot-tag-label {
            font-size: 13px;
            font-weight: 700;
            color: #ffd166;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-right: 4px;
        }

        .hot-tag {
            font-size: 13px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.22);
            padding: 5px 14px;
            border-radius: var(--radius-round);
            color: rgba(255, 255, 255, 0.92);
        }

        .hot-tag:hover {
            background: rgba(255, 255, 255, 0.24);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ---------- Stats Strip ---------- */
        .stats-strip-wrap {
            padding: 0 0 20px;
            margin-top: -48px;
            position: relative;
            z-index: 5;
        }

        .stats-strip {
            background: var(--white);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            padding: 30px 20px;
            gap: 16px;
            border: 1px solid var(--border);
        }

        .stat-item {
            text-align: center;
            padding: 10px 8px;
            border-right: 1px solid var(--border);
        }

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

        .stat-num {
            display: block;
            font-size: 34px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            letter-spacing: -0.5px;
        }

        .stat-label {
            display: block;
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* ---------- Section Common ---------- */
        .section-block {
            padding: 88px 0;
        }

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

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

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

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: var(--radius-round);
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 700;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .section-head h2 {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .section-head p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
        }

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

        .section-head.dark p {
            color: rgba(255, 255, 255, 0.7);
        }

        .section-head.dark .section-tag {
            background: rgba(255, 255, 255, 0.12);
            color: #35d0e8;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        /* ---------- Security Measures ---------- */
        .measure-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            height: 100%;
            padding: 34px 30px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .measure-card::after {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }

        .measure-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: transparent;
        }

        .measure-card:hover::after {
            opacity: 1;
        }

        .measure-icon {
            width: 60px;
            height: 60px;
            border-radius: 18px;
            background: linear-gradient(135deg, var(--primary-light) 0%, var(--accent-light) 100%);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 22px;
            transition: var(--transition);
        }

        .measure-card:hover .measure-icon {
            background: linear-gradient(135deg, var(--primary) 0%, #1d6fc4 100%);
            color: #fff;
            transform: scale(1.06) rotate(-4deg);
            box-shadow: 0 8px 20px rgba(18, 60, 138, 0.3);
        }

        .measure-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
        }

        .measure-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.85;
        }

        /* ---------- Process ---------- */
        .security-process {
            padding: 92px 0;
            background: linear-gradient(135deg, var(--primary-deep) 0%, var(--primary-dark) 60%, #134a9a 100%);
            position: relative;
            overflow: hidden;
        }

        .security-process::before {
            content: '';
            position: absolute;
            width: 520px;
            height: 520px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(6, 182, 212, 0.25) 0%, transparent 70%);
            top: -160px;
            right: -140px;
        }

        .security-process .container {
            position: relative;
            z-index: 2;
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
        }

        .process-item {
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: var(--radius);
            padding: 28px 22px;
            position: relative;
            transition: var(--transition);
            backdrop-filter: blur(6px);
        }

        .process-item:hover {
            background: rgba(255, 255, 255, 0.13);
            transform: translateY(-6px);
            border-color: rgba(255, 255, 255, 0.3);
        }

        .process-num {
            font-size: 26px;
            font-weight: 800;
            color: transparent;
            -webkit-text-stroke: 1px rgba(255, 255, 255, 0.5);
            margin-bottom: 6px;
            letter-spacing: 1px;
        }

        .process-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent);
            margin-bottom: 14px;
            box-shadow: 0 0 0 4px rgba(6, 182, 212, 0.25);
        }

        .process-item h3 {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .process-item p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.8;
        }

        .process-arrow {
            position: absolute;
            top: 30%;
            right: -16px;
            width: 28px;
            height: 28px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            color: rgba(255, 255, 255, 0.8);
            z-index: 3;
            backdrop-filter: blur(4px);
        }

        /* ---------- Tips ---------- */
        .security-tips {
            padding: 92px 0;
            background: var(--white);
        }

        .tips-wrap {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            align-items: start;
        }

        .tips-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .tips-card {
            background: var(--bg-soft);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px;
            transition: var(--transition);
        }

        .tips-card:hover {
            background: var(--primary-light);
            border-color: rgba(18, 60, 138, 0.2);
            transform: translateY(-4px);
        }

        .tips-card .tips-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--white);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
            margin-bottom: 14px;
            box-shadow: 0 4px 12px rgba(18, 60, 138, 0.08);
        }

        .tips-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }

        .tips-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.75;
        }

        .security-metrics {
            background: var(--primary-deep);
            border-radius: var(--radius);
            padding: 36px 34px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .security-metrics::before {
            content: '';
            position: absolute;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(6, 182, 212, 0.2);
            top: -80px;
            right: -80px;
        }

        .security-metrics h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .security-metrics .metrics-note {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 28px;
        }

        .metric-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 14px;
            margin-bottom: 14px;
        }

        .metric-item .metric-label {
            color: rgba(255, 255, 255, 0.85);
            flex-shrink: 0;
        }

        .metric-item .metric-value {
            font-weight: 700;
            color: #35d0e8;
        }

        .progress-track {
            height: 8px;
            background: rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-round);
            overflow: hidden;
            margin-top: 4px;
        }

        .progress-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--accent), #22d3ee);
            border-radius: var(--radius-round);
            transition: width 0.8s ease;
        }

        /* ---------- Articles ---------- */
        .article-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            height: 100%;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .article-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: transparent;
        }

        .article-cover {
            position: relative;
            display: block;
            overflow: hidden;
            aspect-ratio: 16 / 11;
        }

        .article-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .article-card:hover .article-cover img {
            transform: scale(1.06);
        }

        .article-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(8, 22, 54, 0.55) 100%);
        }

        .article-tag {
            position: absolute;
            left: 14px;
            top: 14px;
            z-index: 2;
            background: rgba(255, 255, 255, 0.92);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            border-radius: var(--radius-round);
            padding: 5px 12px;
            backdrop-filter: blur(4px);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
        }

        .article-play {
            position: absolute;
            right: 14px;
            top: 14px;
            z-index: 2;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.9);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
            transition: var(--transition);
        }

        .article-card:hover .article-play {
            background: var(--primary);
            color: #fff;
            transform: scale(1.1);
        }

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

        .article-body h3 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.45;
            margin-bottom: 10px;
        }

        .article-body h3 a {
            color: var(--text);
        }

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

        .article-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            flex: 1;
            margin-bottom: 16px;
        }

        .article-meta {
            font-size: 12px;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 6px;
            padding-top: 14px;
            border-top: 1px solid var(--border);
        }

        /* ---------- FAQ ---------- */
        .security-faq {
            padding: 92px 0;
            background: var(--bg);
        }

        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }

        .accordion-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }

        .accordion-item:hover {
            border-color: rgba(18, 60, 138, 0.25);
            box-shadow: 0 6px 20px rgba(18, 60, 138, 0.06);
        }

        .accordion-title {
            display: flex !important;
            align-items: center;
            gap: 14px;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text) !important;
            border: none !important;
            background: transparent;
            transition: var(--transition);
        }

        .accordion-title::before, .accordion-title::after {
            display: none;
        }

        .accordion-title .fa-circle-question {
            color: var(--primary);
            font-size: 18px;
            flex-shrink: 0;
        }

        .accordion-title .fa-chevron-down {
            margin-left: auto;
            font-size: 14px;
            color: var(--text-light);
            transition: var(--transition);
        }

        .accordion-item.is-active .accordion-title {
            color: var(--primary) !important;
        }

        .accordion-item.is-active .accordion-title .fa-chevron-down {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .accordion-content {
            padding: 4px 24px 20px 56px !important;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.85;
            background: var(--white) !important;
            border-top: 1px solid var(--border);
        }

        /* ---------- CTA ---------- */
        .cta-section {
            padding: 84px 0;
            background: linear-gradient(135deg, var(--primary) 0%, #1d6fc4 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            top: -160px;
            right: -100px;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(6, 182, 212, 0.25);
            bottom: -120px;
            left: 60px;
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 34px;
            font-weight: 800;
            color: #fff;
            line-height: 1.35;
            margin-bottom: 14px;
        }

        .cta-inner p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.85;
            margin-bottom: 32px;
        }

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

        .btn-white {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
        }

        .btn-white:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 32px rgba(0, 0, 0, 0.22);
        }

        .btn-outline-white {
            border: 1px solid rgba(255, 255, 255, 0.5);
            color: #fff;
        }

        .btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.12);
            transform: translateY(-3px);
        }

        /* ---------- Footer ---------- */
        .site-footer {
            background: var(--primary-deep);
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 0.8fr;
            gap: 48px;
            padding-bottom: 44px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.18);
        }

        .footer-brand .logo .logo-text {
            color: #fff;
        }

        .footer-brand .logo .logo-text span {
            color: #35d0e8;
        }

        .footer-brand > p {
            font-size: 14px;
            line-height: 1.9;
            margin-top: 18px;
            max-width: 360px;
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }

        .footer-col ul li {
            margin-bottom: 12px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }

        .footer-col ul li a:hover {
            color: #fff;
            padding-left: 6px;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding: 22px 0 24px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }

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

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

        /* ---------- Responsive ---------- */
        @media (max-width: 1024px) {
            .process-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }

            .process-arrow {
                display: none;
            }

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

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

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 900px) {
            .nav-toggle {
                display: flex;
            }

            .main-nav {
                display: none;
                position: absolute;
                top: calc(var(--header-h) - 4px);
                left: 0;
                right: 0;
                background: var(--white);
                border-bottom: 1px solid var(--border);
                box-shadow: 0 16px 32px rgba(16, 42, 90, 0.12);
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                padding: 16px 24px 20px;
                border-radius: 0 0 var(--radius) var(--radius);
            }

            .main-nav.open {
                display: flex;
            }

            .main-nav a {
                padding: 12px 18px;
                border-radius: var(--radius-sm);
            }

            .main-nav a.active {
                background: var(--primary-light);
                color: var(--primary);
                box-shadow: none;
            }

            .header-search {
                order: -1;
                max-width: none;
                flex: 1;
            }

            .page-hero {
                padding: 64px 0 84px;
            }

            .page-hero h1 {
                font-size: 36px;
            }

            .stats-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px 16px;
            }

            .stat-item {
                border-right: none;
            }

            .section-block {
                padding: 68px 0;
            }

            .section-head h2,
            .cta-inner h2 {
                font-size: 28px;
            }
        }

        @media (max-width: 640px) {
            .container {
                padding-left: 18px;
                padding-right: 18px;
            }

            .header-inner {
                gap: 12px;
            }

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

            .logo-icon {
                width: 38px;
                height: 38px;
            }

            .page-hero {
                padding: 52px 0 70px;
            }

            .page-hero h1 {
                font-size: 29px;
            }

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

            .hero-actions .btn {
                font-size: 14px;
                padding: 12px 20px;
            }

            .hot-topics {
                gap: 8px;
            }

            .stats-strip-wrap {
                margin-top: -36px;
            }

            .stats-strip {
                padding: 22px 14px;
            }

            .stat-num {
                font-size: 26px;
            }

            .stat-label {
                font-size: 12px;
            }

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

            .process-item {
                padding: 22px 20px;
            }

            .tips-list {
                grid-template-columns: 1fr;
            }

            .metrics-panel {
                padding: 28px 20px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .footer-brand {
                grid-column: auto;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }

            .accordion-title {
                font-size: 15px;
                padding: 18px 20px;
            }

            .accordion-content {
                padding: 2px 20px 18px 48px !important;
                font-size: 13px;
            }

            .cta-btns .btn {
                width: 100%;
                justify-content: center;
                max-width: 300px;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                padding-top: 10px;
                padding-bottom: 10px;
            }

            .header-search {
                min-width: 100%;
                order: 10;
                margin-top: 4px;
            }

            .main-nav {
                top: auto;
                position: relative;
                box-shadow: none;
                border-radius: 0;
            }

            .stats-strip {
                grid-template-columns: 1fr 1fr;
            }

            .stat-item {
                padding: 8px 4px;
            }

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

            .card-title {
                font-size: 16px;
            }
        }