/* roulang page: index */
:root {
            --primary: #2563eb;
            --primary-dark: #1e40af;
            --primary-light: #dbeafe;
            --secondary: #f97316;
            --secondary-light: #fff7ed;
            --dark: #0f172a;
            --dark-soft: #1e293b;
            --bg: #f8fafc;
            --surface: #ffffff;
            --text: #1e293b;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 4px 24px rgba(15, 23, 42, 0.07);
            --shadow-lg: 0 16px 48px rgba(15, 23, 42, 0.12);
            --transition: all 0.3s ease;
            --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

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

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

        input {
            font-family: inherit;
        }

        ul, ol {
            list-style: none;
        }

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

        .section {
            padding: 96px 0;
        }

        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 56px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 999px;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }

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

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.25);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(37, 99, 235, 0.35);
        }

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

        .btn-ghost {
            background: rgba(255, 255, 255, 0.14);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.35);
            backdrop-filter: blur(4px);
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.25);
            border-color: rgba(255, 255, 255, 0.5);
        }

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

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }

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

        .btn:focus-visible,
        a:focus-visible {
            outline: 3px solid rgba(37, 99, 235, 0.4);
            outline-offset: 2px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            background: var(--primary-light);
            color: var(--primary);
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.8);
            transition: box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }

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

        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 2px;
            margin-left: 16px;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 18px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
        }

        .nav-link:hover {
            color: var(--text);
            background: rgba(37, 99, 235, 0.06);
        }

        .nav-link.active {
            color: var(--primary);
            background: rgba(37, 99, 235, 0.1);
            font-weight: 600;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-left: auto;
        }

        .search-box {
            display: flex;
            align-items: center;
            gap: 8px;
            background: #f1f5f9;
            border-radius: 999px;
            padding: 8px 16px;
            border: 1px solid transparent;
            transition: var(--transition);
        }

        .search-box:focus-within {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
        }

        .search-box i {
            color: var(--text-muted);
            font-size: 14px;
        }

        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 14px;
            color: var(--text);
            width: 140px;
        }

        .search-box input::placeholder {
            color: var(--text-muted);
        }

        .nav-cta {
            padding: 10px 20px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }

        .nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(37, 99, 235, 0.3);
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: transparent;
            border: 1px solid var(--border);
            align-items: center;
            justify-content: center;
            color: var(--text);
            font-size: 18px;
            transition: var(--transition);
        }

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

        .mobile-menu {
            display: none;
            border-top: 1px solid var(--border);
            background: #fff;
            padding: 16px 24px;
            flex-direction: column;
            gap: 8px;
        }

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

        .mobile-menu a {
            padding: 12px 16px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: rgba(37, 99, 235, 0.08);
            color: var(--primary);
        }

        .mobile-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: #f1f5f9;
            border-radius: 10px;
            padding: 10px 14px;
            margin-top: 4px;
        }

        .mobile-search input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 14px;
            flex: 1;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            min-height: 620px;
            display: flex;
            align-items: center;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.82) 0%, rgba(15, 23, 42, 0.55) 60%, rgba(15, 23, 42, 0.35) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 760px;
            padding: 80px 0;
        }

        .hero-brand {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.22);
            backdrop-filter: blur(8px);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            letter-spacing: 1px;
            margin-bottom: 22px;
        }

        .hero-title {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.2;
            color: #fff;
            letter-spacing: -1px;
            margin-bottom: 18px;
        }

        .hero-title span {
            color: #93c5fd;
        }

        .hero-subtitle {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 32px;
            max-width: 620px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 48px;
        }

        .hero-stats {
            display: flex;
            gap: 36px;
            flex-wrap: wrap;
        }

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

        .hero-stat-number {
            font-size: 30px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }

        .hero-stat-number small {
            font-size: 16px;
            font-weight: 600;
            color: #93c5fd;
            margin-left: 2px;
        }

        .hero-stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
        }

        /* ===== About ===== */
        .about-section {
            padding: 96px 0;
            background: var(--surface);
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

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

        .about-image img {
            width: 100%;
            height: 420px;
            object-fit: cover;
        }

        .about-image::after {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: var(--radius-lg);
            box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.1);
        }

        .about-badge {
            position: absolute;
            top: 20px;
            right: 20px;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(8px);
            padding: 8px 14px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
        }

        .about-content {
            padding: 20px 0;
        }

        .about-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 16px;
        }

        .about-title {
            font-size: 30px;
            font-weight: 800;
            line-height: 1.35;
            color: var(--dark);
            margin-bottom: 14px;
            letter-spacing: -0.4px;
        }

        .about-text {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 24px;
        }

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

        .about-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text);
        }

        .about-list li i {
            color: var(--primary);
            margin-top: 4px;
            font-size: 14px;
            flex-shrink: 0;
        }

        /* ===== Category ===== */
        .category-section {
            padding: 96px 0;
            background: var(--bg);
        }

        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background-image: url('/assets/images/coverpic/cover-2.png');
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: center;
            min-height: 360px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

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

        .category-card::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to right, rgba(15, 23, 42, 0.85) 0%, rgba(15, 23, 42, 0.55) 60%, rgba(15, 23, 42, 0.2) 100%);
        }

        .category-content {
            position: relative;
            z-index: 2;
            padding: 48px;
            max-width: 560px;
        }

        .category-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 16px;
            backdrop-filter: blur(4px);
        }

        .category-title {
            font-size: 30px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: -0.4px;
        }

        .category-text {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .category-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 22px;
            background: var(--primary);
            border-radius: 10px;
            transition: var(--transition);
        }

        .category-link:hover {
            background: var(--primary-dark);
            transform: translateX(4px);
        }

        /* ===== News ===== */
        .news-section {
            padding: 96px 0;
            background: var(--surface);
        }

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

        .post-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }

        .post-card:hover {
            border-color: transparent;
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }

        .post-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            margin-bottom: 14px;
        }

        .post-meta span {
            font-size: 12px;
            color: var(--text-muted);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .post-cat {
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 12px;
            border-radius: 999px;
            font-weight: 600;
        }

        .post-title {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.5;
            color: var(--dark);
            margin-bottom: 8px;
        }

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

        .post-excerpt {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 20px;
            flex-grow: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

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

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

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

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

        /* ===== Stats ===== */
        .stats-section {
            padding: 96px 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(30, 58, 138, 0.85) 100%);
        }

        .stats-grid {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            text-align: center;
        }

        .stat-item {
            padding: 32px 20px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius);
            backdrop-filter: blur(6px);
            transition: var(--transition);
        }

        .stat-item:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
        }

        .stat-icon {
            font-size: 28px;
            color: #60a5fa;
            margin-bottom: 12px;
        }

        .stat-number {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }

        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 6px;
        }

        /* ===== Features ===== */
        .features-section {
            padding: 96px 0;
            background: var(--bg);
        }

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

        .feature-card {
            background: var(--surface);
            border-radius: var(--radius);
            padding: 36px 32px;
            border: 1px solid var(--border);
            transition: var(--transition);
        }

        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }

        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 18px;
        }

        .feature-card:nth-child(2) .feature-icon {
            background: var(--secondary-light);
            color: var(--secondary);
        }

        .feature-card:nth-child(3) .feature-icon {
            background: #f0fdf4;
            color: #16a34a;
        }

        .feature-card:nth-child(4) .feature-icon {
            background: #fdf4ff;
            color: #a855f7;
        }

        .feature-title {
            font-size: 19px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .feature-text {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
        }

        /* ===== Steps ===== */
        .steps-section {
            padding: 96px 0;
            background: var(--surface);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            counter-reset: step;
        }

        .step-item {
            text-align: center;
            padding: 40px 28px;
            background: var(--bg);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            position: relative;
            transition: var(--transition);
        }

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

        .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
        }

        .step-item:nth-child(2) .step-number {
            background: var(--secondary);
            box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
        }

        .step-item:nth-child(3) .step-number {
            background: #16a34a;
            box-shadow: 0 4px 12px rgba(22, 163, 74, 0.3);
        }

        .step-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .step-text {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 96px 0;
            background: var(--bg);
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: var(--primary);
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.08);
        }

        .faq-item summary {
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--dark);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            list-style: none;
        }

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

        .faq-item summary::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            color: var(--text-muted);
            transition: var(--transition);
            font-size: 16px;
            flex-shrink: 0;
        }

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

        .faq-item[open] summary {
            border-bottom: 1px solid var(--border);
            color: var(--primary);
        }

        .faq-item p {
            padding: 16px 24px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.75;
            background: rgba(241, 245, 249, 0.4);
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 96px 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            position: relative;
            text-align: center;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.9), rgba(30, 64, 175, 0.85));
        }

        .cta-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
            margin: 0 auto;
            padding: 20px 0;
        }

        .cta-title {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 14px;
            letter-spacing: -0.5px;
        }

        .cta-subtitle {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.8;
            margin-bottom: 32px;
        }

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

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 64px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 60px;
            padding-bottom: 48px;
        }

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

        .footer-brand .logo-icon {
            background: linear-gradient(135deg, var(--primary), #3b82f6);
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            margin-top: 16px;
            max-width: 380px;
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-links h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-links ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .container {
                padding: 0 24px;
            }

            .section {
                padding: 72px 0;
            }

            .hero-title {
                font-size: 38px;
            }

            .section-title {
                font-size: 28px;
            }

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

            .about-grid {
                gap: 40px;
            }

            .about-image img {
                height: 360px;
            }

            .stats-grid {
                gap: 20px;
            }

            .stat-number {
                font-size: 28px;
            }

            .search-box input {
                width: 110px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }

            .nav-links {
                display: none;
            }

            .nav-actions .search-box,
            .nav-actions .nav-cta {
                display: none;
            }

            .nav-toggle {
                display: inline-flex;
            }

            .mobile-menu {
                display: none;
                flex-direction: column;
            }

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

            .hero {
                min-height: 520px;
            }

            .hero-content {
                padding: 60px 0;
            }

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

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

            .hero-stats {
                gap: 24px;
            }

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

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

            .about-image img {
                height: 300px;
            }

            .category-content {
                padding: 36px 24px;
            }

            .category-card {
                min-height: 300px;
            }

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

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

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

            .steps-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

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

            .cta-title {
                font-size: 28px;
            }

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

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

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

            .section {
                padding: 48px 0;
            }

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

            .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 16px;
            }

            .hero {
                min-height: 480px;
            }

            .hero-content {
                padding: 48px 0;
            }

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

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

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

            .hero-actions .btn {
                width: 100%;
            }

            .hero-stats {
                gap: 16px;
            }

            .hero-stat-number {
                font-size: 20px;
            }

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

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

            .category-card {
                min-height: 260px;
            }

            .category-title {
                font-size: 22px;
            }

            .category-text {
                font-size: 14px;
            }

            .category-content {
                padding: 28px 20px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .stat-item {
                padding: 20px 12px;
            }

            .stat-number {
                font-size: 24px;
            }

            .stat-icon {
                font-size: 22px;
            }

            .feature-card {
                padding: 24px 20px;
            }

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

            .faq-item p {
                padding: 14px 18px;
                font-size: 14px;
            }

            .cta-title {
                font-size: 24px;
            }

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

            .cta-actions .btn {
                width: 100%;
            }

            .footer-grid {
                gap: 32px;
                padding-bottom: 32px;
            }
        }

/* roulang page: article */
:root {
    --primary: #0a2540;
    --primary-light: #1a3a5c;
    --primary-soft: #e8eef5;
    --accent: #ff6b35;
    --accent-hover: #e85a26;
    --accent-soft: #fff0ea;
    --bg: #f4f6fa;
    --bg-white: #ffffff;
    --text: #1e2a3a;
    --text-light: #5b6b80;
    --text-weak: #8a99ac;
    --border: #e2e8f0;
    --radius: 18px;
    --radius-sm: 12px;
    --radius-xs: 8px;
    --shadow: 0 4px 24px rgba(10, 37, 64, 0.08);
    --shadow-lg: 0 12px 40px rgba(10, 37, 64, 0.12);
    --transition: all 0.3s ease;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

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

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

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

button,
input {
    font-family: inherit;
    font-size: 14px;
    border: none;
    outline: none;
}

input:focus {
    outline: 2px solid var(--accent);
    outline-offset: 1px;
}

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

.container-narrow {
    max-width: 860px;
}

i {
    font-style: normal;
}

/* ===== 导航 ===== */
.site-header {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    height: 70px;
}

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

.logo-icon {
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, var(--primary), #194a75);
    color: #fff;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 17px;
    box-shadow: 0 4px 12px rgba(10, 37, 64, 0.2);
}

.logo-text {
    font-size: 19px;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 18px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-light);
    transition: var(--transition);
    white-space: nowrap;
}

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

.nav-link.active {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 14px rgba(10, 37, 64, 0.22);
}

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

.search-box {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 8px 16px;
    width: 200px;
    transition: var(--transition);
}

.search-box:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.15);
}

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

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

.search-box input::placeholder {
    color: var(--text-weak);
}

.menu-toggle {
    display: none;
    background: var(--primary);
    color: #fff;
    border-radius: 10px;
    padding: 8px 13px;
    font-size: 16px;
    cursor: pointer;
    transition: var(--transition);
}

.menu-toggle:hover {
    background: var(--primary-light);
    transform: scale(1.03);
}

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    line-height: 1.4;
    text-align: center;
}

.btn-sm {
    padding: 8px 18px;
    font-size: 13px;
}

.btn-lg {
    padding: 16px 34px;
    font-size: 16px;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 6px 18px rgba(255, 107, 53, 0.35);
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(255, 107, 53, 0.4);
}

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

.btn-outline {
    background: transparent;
    border-color: var(--border);
    color: var(--text);
}

.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-soft);
}

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

.btn-light:hover {
    background: var(--primary);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.18);
}

/* ===== 面包屑 & 文章 Hero ===== */
.article-hero {
    position: relative;
    padding: 84px 0 72px;
    background-size: cover;
    background-position: center;
    color: #fff;
}

.article-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(10, 37, 64, 0.96) 0%, rgba(18, 52, 84, 0.88) 45%, rgba(35, 75, 110, 0.72) 100%);
}

.article-hero .container {
    position: relative;
    z-index: 1;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 18px;
    flex-wrap: wrap;
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.8);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.breadcrumb a:hover {
    color: #ffb59a;
}

.breadcrumb i {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.5);
}

.badge-accent {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--accent);
    color: #fff;
    padding: 6px 16px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 14px;
}

.article-title {
    font-size: 38px;
    line-height: 1.25;
    font-weight: 800;
    max-width: 820px;
    margin-bottom: 22px;
    text-shadow: 0 2px 16px rgba(0, 0, 0, 0.2);
    letter-spacing: 0.5px;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 20px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.85);
    flex-wrap: wrap;
}

.article-meta span {
    display: inline-flex;
    align-items: center;
    gap: 7px;
}

.article-meta i {
    color: rgba(255, 255, 255, 0.6);
}

/* ===== 文章主体 ===== */
.article-body-section {
    position: relative;
    z-index: 2;
    padding: 0 0 60px;
    margin-top: -36px;
}

.article-card {
    background: var(--bg-white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 48px 52px;
    border: 1px solid rgba(255, 255, 255, 0.6);
}

.article-content {
    font-size: 17px;
    line-height: 2;
    color: #34455a;
}

.article-content h2 {
    font-size: 26px;
    font-weight: 800;
    color: var(--primary);
    margin: 34px 0 16px;
    padding-left: 16px;
    border-left: 4px solid var(--accent);
    line-height: 1.4;
}

.article-content h3 {
    font-size: 21px;
    font-weight: 700;
    color: var(--primary);
    margin: 28px 0 12px;
}

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

.article-content ul,
.article-content ol {
    margin: 0 0 20px 22px;
    padding: 0;
}

.article-content li {
    margin-bottom: 8px;
}

.article-content img {
    border-radius: var(--radius);
    margin: 24px 0;
    box-shadow: var(--shadow);
}

.article-content blockquote {
    background: var(--primary-soft);
    border-radius: var(--radius-sm);
    padding: 20px 24px;
    margin: 24px 0;
    font-size: 16px;
    color: var(--primary);
    border-left: 4px solid var(--accent);
    font-weight: 500;
}

/* ===== 标签 & 分享 ===== */
.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 36px;
    padding-top: 28px;
    border-top: 1px solid var(--border);
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--bg);
    color: var(--text-light);
    padding: 7px 16px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 500;
    border: 1px solid var(--border);
    transition: var(--transition);
    cursor: default;
}

.tag:hover {
    background: var(--primary-soft);
    color: var(--primary);
}

.article-share {
    display: flex;
    gap: 12px;
    margin-top: 24px;
    flex-wrap: wrap;
}

/* ===== 未找到 ===== */
.not-found-section {
    padding: 140px 0 180px;
}

.not-found-card {
    background: var(--bg-white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    text-align: center;
    padding: 80px 40px;
    max-width: 620px;
    margin: 0 auto;
}

.not-found-card > i {
    font-size: 52px;
    color: var(--accent);
    margin-bottom: 18px;
}

.not-found-card h1 {
    font-size: 30px;
    color: var(--primary);
    margin-bottom: 10px;
}

.not-found-card p {
    color: var(--text-light);
    margin-bottom: 26px;
    font-size: 16px;
}

/* ===== 板块标题 ===== */
.section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 30px;
    gap: 16px;
}

.section-head h2 {
    font-size: 28px;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: 0.5px;
    position: relative;
}

.section-head h2::after {
    content: "";
    display: block;
    width: 44px;
    height: 3px;
    border-radius: 4px;
    background: var(--accent);
    margin-top: 7px;
}

.link-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 700;
    color: var(--accent);
    padding: 8px 16px;
    border-radius: 999px;
    background: var(--accent-soft);
    transition: var(--transition);
}

.link-more:hover {
    background: var(--accent);
    color: #fff;
    transform: translateX(3px);
}

/* ===== 相关推荐 ===== */
.related-section {
    padding: 60px 0 20px;
}

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

.related-card {
    background: var(--bg-white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px;
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 12px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.related-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(255, 107, 53, 0.4);
}

.related-card .thumb {
    width: 100%;
    height: 140px;
    border-radius: var(--radius-sm);
    object-fit: cover;
    position: relative;
}

.related-card .badge {
    position: absolute;
    top: 16px;
    left: 16px;
    background: var(--accent);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    padding: 4px 14px;
    border-radius: 999px;
    z-index: 2;
}

.related-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary);
    transition: var(--transition);
}

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

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

.related-card .card-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: var(--text-weak);
    margin-top: auto;
}

/* ===== 横向滚动 ===== */
.scroll-section {
    padding: 50px 0;
}

.scroll-group {
    display: flex;
    gap: 16px;
    overflow-x: auto;
    padding-bottom: 14px;
    scroll-snap-type: x mandatory;
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}

.scroll-group::-webkit-scrollbar {
    height: 6px;
}

.scroll-group::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 6px;
}

.scroll-group::-webkit-scrollbar-track {
    background: transparent;
}

.sc-card {
    flex: 0 0 290px;
    scroll-snap-align: start;
    background: var(--bg-white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
}

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

.sc-card img {
    width: 100%;
    height: 150px;
    object-fit: cover;
}

.sc-card .badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background: rgba(10, 37, 64, 0.85);
    backdrop-filter: blur(4px);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 999px;
    z-index: 2;
}

.sc-card .sc-body {
    padding: 16px 18px;
}

.sc-card h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 6px;
    line-height: 1.5;
}

.sc-card p {
    font-size: 13px;
    color: var(--text-light);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ===== 频道入口 ===== */
.channel-section {
    padding: 60px 0;
}

.channel-card {
    background: linear-gradient(135deg, #0d2e52, #1b4a7a);
    border-radius: var(--radius);
    padding: 40px 36px;
    color: #fff;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 28px;
    flex-wrap: wrap;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
}

.channel-card::after {
    content: "";
    position: absolute;
    right: -60px;
    top: -60px;
    width: 220px;
    height: 220px;
    background: rgba(255, 107, 53, 0.2);
    border-radius: 50%;
}

.channel-info {
    max-width: 480px;
    position: relative;
    z-index: 1;
}

.channel-info .badge {
    display: inline-block;
    background: var(--accent);
    padding: 4px 14px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
    margin-bottom: 12px;
}

.channel-info h2 {
    font-size: 26px;
    font-weight: 800;
    margin-bottom: 10px;
}

.channel-info p {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.7;
}

.channel-thumb {
    flex-shrink: 0;
    width: 220px;
    height: 150px;
    border-radius: var(--radius);
    object-fit: cover;
    border: 3px solid rgba(255, 255, 255, 0.25);
    position: relative;
    z-index: 1;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
}

/* ===== CTA ===== */
.cta-section {
    padding: 50px 0 70px;
}

.cta-card {
    background: linear-gradient(135deg, #ff7847, #ff6b35 55%, #f04a1d);
    border-radius: var(--radius);
    padding: 56px 48px;
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: 0 16px 48px rgba(255, 107, 53, 0.3);
}

.cta-card::before {
    content: "\f1e3";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    position: absolute;
    right: -20px;
    bottom: -30px;
    font-size: 180px;
    color: rgba(255, 255, 255, 0.08);
}

.cta-card h2 {
    font-size: 30px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 10px;
    position: relative;
    z-index: 1;
}

.cta-card p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.92);
    margin-bottom: 28px;
    position: relative;
    z-index: 1;
}

.cta-card .btn {
    position: relative;
    z-index: 1;
}

/* ===== 页脚 ===== */
.site-footer {
    background: #0b1f35;
    color: rgba(255, 255, 255, 0.75);
    padding: 64px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 60px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 28px;
}

.footer-brand .logo .logo-icon {
    background: var(--accent);
}

.footer-brand .logo .logo-text {
    color: #fff;
    font-size: 20px;
}

.footer-desc {
    margin-top: 16px;
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.6);
    max-width: 420px;
}

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

.footer-links ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 4px 0;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--accent);
    padding-left: 6px;
}

.footer-links a i {
    font-size: 12px;
    color: var(--accent);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.45);
    flex-wrap: wrap;
    gap: 10px;
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.6);
}

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

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .search-box {
        width: 150px;
    }
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .article-title {
        font-size: 32px;
    }
    .article-card {
        padding: 36px;
    }
    .channel-card {
        flex-direction: column;
        align-items: flex-start;
    }
    .channel-thumb {
        width: 100%;
        height: 180px;
    }
}

@media (max-width: 900px) {
    .menu-toggle {
        display: block;
    }
    .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 20px 24px;
        box-shadow: 0 16px 40px rgba(10, 37, 64, 0.12);
        border-bottom: 1px solid var(--border);
        gap: 6px;
    }
    .nav-links.open {
        display: flex;
    }
    .nav-link {
        width: 100%;
        padding: 12px 16px;
        border-radius: var(--radius-sm);
    }
    .header-actions {
        display: none;
        position: absolute;
        top: 220px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 0 24px 24px;
        box-shadow: 0 16px 40px rgba(10, 37, 64, 0.12);
        border-bottom: 1px solid var(--border);
    }
    .header-actions.open {
        display: flex;
    }
    .header-actions .search-box {
        width: 100%;
    }
    .header-actions .btn {
        width: 100%;
        justify-content: center;
    }
    .article-hero {
        padding: 70px 0 60px;
    }
    .article-title {
        font-size: 28px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }
    .article-body-section {
        margin-top: -24px;
    }
    .article-card {
        padding: 28px 22px;
        border-radius: 14px;
    }
    .article-content {
        font-size: 16px;
    }
    .article-content h2 {
        font-size: 22px;
    }
    .article-content h3 {
        font-size: 18px;
    }
    .article-meta {
        gap: 12px;
        font-size: 13px;
    }
    .related-grid {
        grid-template-columns: 1fr;
    }
    .section-head h2 {
        font-size: 24px;
    }
    .cta-card {
        padding: 40px 28px;
    }
    .cta-card h2 {
        font-size: 24px;
    }
    .not-found-section {
        padding: 90px 0 130px;
    }
    .not-found-card {
        padding: 60px 30px;
    }
}

@media (max-width: 520px) {
    .header-inner {
        height: 62px;
    }
    .logo-text {
        font-size: 16px;
    }
    .logo-icon {
        width: 32px;
        height: 32px;
        font-size: 14px;
        border-radius: 10px;
    }
    .article-hero {
        padding: 56px 0 50px;
    }
    .article-title {
        font-size: 24px;
    }
    .breadcrumb {
        font-size: 13px;
    }
    .article-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    .article-share {
        flex-direction: column;
    }
    .article-share .btn {
        width: 100%;
        justify-content: center;
    }
    .scroll-group .sc-card {
        flex: 0 0 240px;
    }
    .channel-card {
        padding: 28px 22px;
    }
    .channel-info h2 {
        font-size: 22px;
    }
    .cta-card {
        padding: 36px 22px;
        border-radius: 14px;
    }
    .cta-card h2 {
        font-size: 22px;
    }
    .footer-bottom {
        justify-content: center;
        text-align: center;
    }
}

/* roulang page: category1 */
/* ========== 设计变量与基础 Reset ========== */
    :root {
        --primary: #2563eb;
        --primary-dark: #1d4ed8;
        --primary-light: #dbeafe;
        --accent: #f97316;
        --accent-dark: #ea580c;
        --accent-light: #ffedd5;
        --dark: #0f172a;
        --dark-2: #1e293b;
        --bg: #f8fafc;
        --white: #ffffff;
        --text: #1e293b;
        --text-weak: #64748b;
        --border: #e2e8f0;
        --radius: 16px;
        --radius-sm: 10px;
        --radius-lg: 24px;
        --shadow-sm: 0 2px 8px rgba(15, 23, 42, .06);
        --shadow: 0 8px 24px rgba(15, 23, 42, .08);
        --shadow-lg: 0 16px 40px rgba(15, 23, 42, .12);
        --transition: .25s ease;
        --container: 1200px;
    }
    *,
    *::before,
    *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }
    html {
        scroll-behavior: smooth;
        -webkit-text-size-adjust: 100%;
    }
    body {
        font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
        background: var(--bg);
        color: var(--text);
        line-height: 1.7;
        font-size: 16px;
        -webkit-font-smoothing: antialiased;
    }
    img {
        max-width: 100%;
        display: block;
    }
    a {
        text-decoration: none;
        color: inherit;
        transition: color var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
    }
    ul,
    ol {
        list-style: none;
    }
    button,
    input,
    textarea {
        font-family: inherit;
        font-size: inherit;
        border: none;
        background: none;
        outline: none;
    }
    :focus-visible {
        outline: 3px solid rgba(37, 99, 235, .35);
        outline-offset: 2px;
    }
    .container {
        width: 100%;
        max-width: var(--container);
        margin: 0 auto;
        padding: 0 24px;
    }

    /* ========== 按钮 ========== */
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 12px 24px;
        border-radius: 12px;
        font-weight: 700;
        font-size: .95rem;
        line-height: 1.3;
        cursor: pointer;
        transition: all var(--transition);
        border: 1px solid transparent;
        white-space: nowrap;
    }
    .btn i {
        font-size: .9em;
    }
    .btn-primary {
        background: var(--primary);
        color: #fff;
        box-shadow: 0 4px 14px rgba(37, 99, 235, .28);
    }
    .btn-primary:hover {
        background: var(--primary-dark);
        transform: translateY(-2px);
        box-shadow: 0 8px 22px rgba(37, 99, 235, .36);
    }
    .btn-primary:active {
        transform: translateY(0);
    }
    .btn-accent {
        background: var(--accent);
        color: #fff;
        box-shadow: 0 4px 14px rgba(249, 115, 22, .28);
    }
    .btn-accent:hover {
        background: var(--accent-dark);
        transform: translateY(-2px);
        box-shadow: 0 8px 22px rgba(249, 115, 22, .36);
    }
    .btn-ghost {
        background: rgba(255, 255, 255, .65);
        color: var(--text);
        border-color: var(--border);
        backdrop-filter: blur(6px);
    }
    .btn-ghost:hover {
        border-color: var(--primary);
        color: var(--primary);
        background: #fff;
        transform: translateY(-2px);
        box-shadow: var(--shadow-sm);
    }
    .btn-light {
        background: #fff;
        color: var(--dark);
        border-color: rgba(255, 255, 255, .5);
    }
    .btn-light:hover {
        background: rgba(255, 255, 255, .9);
        transform: translateY(-2px);
        box-shadow: 0 8px 24px rgba(0, 0, 0, .18);
    }
    .btn-dark {
        background: var(--dark-2);
        color: #fff;
    }
    .btn-dark:hover {
        background: var(--dark);
        transform: translateY(-2px);
    }
    .btn-lg {
        padding: 15px 32px;
        font-size: 1.02rem;
        border-radius: 14px;
    }
    .btn-sm {
        padding: 9px 16px;
        font-size: .88rem;
        border-radius: 10px;
    }
    .btn:focus-visible {
        outline: 3px solid rgba(37, 99, 235, .4);
        outline-offset: 2px;
    }

    /* ========== 徽章与标签 ========== */
    .badge,
    .section-tag,
    .card-tag,
    .hero-badge {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-weight: 700;
        font-size: .8rem;
        letter-spacing: .02em;
        border-radius: 999px;
    }
    .section-tag {
        color: var(--primary);
        background: var(--primary-light);
        padding: 6px 16px;
        margin-bottom: 14px;
    }
    .section-tag i {
        font-size: .85em;
    }
    .hero-badge {
        background: rgba(255, 255, 255, .16);
        border: 1px solid rgba(255, 255, 255, .28);
        color: #fff;
        padding: 8px 18px;
        backdrop-filter: blur(8px);
        font-size: .85rem;
        margin-bottom: 20px;
    }
    .card-tag {
        position: absolute;
        top: 14px;
        left: 14px;
        background: rgba(15, 23, 42, .72);
        color: #fff;
        padding: 4px 12px;
        font-size: .75rem;
        backdrop-filter: blur(6px);
        border: 1px solid rgba(255, 255, 255, .16);
    }

    /* ========== Header / 导航 ========== */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 100;
        background: rgba(255, 255, 255, .85);
        backdrop-filter: blur(14px);
        -webkit-backdrop-filter: blur(14px);
        border-bottom: 1px solid var(--border);
        transition: box-shadow var(--transition);
    }
    .site-header:hover {
        box-shadow: var(--shadow-sm);
    }
    .header-container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 18px;
        height: 74px;
    }
    .logo {
        display: flex;
        align-items: center;
        gap: 12px;
        flex-shrink: 0;
        color: var(--dark);
        font-weight: 800;
        font-size: 1.32rem;
        letter-spacing: -.01em;
    }
    .logo-icon {
        width: 42px;
        height: 42px;
        border-radius: 13px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: linear-gradient(135deg, var(--primary), #4f46e5);
        color: #fff;
        font-size: 1.1rem;
        box-shadow: 0 4px 12px rgba(37, 99, 235, .32);
    }
    .logo-text {
        white-space: nowrap;
    }
    .nav-links {
        display: flex;
        align-items: center;
        gap: 4px;
        flex: 1;
        justify-content: center;
    }
    .nav-link {
        display: inline-flex;
        align-items: center;
        gap: 7px;
        padding: 10px 16px;
        border-radius: 11px;
        font-weight: 600;
        font-size: .95rem;
        color: var(--text);
        transition: all var(--transition);
    }
    .nav-link i {
        font-size: .9em;
        opacity: .75;
    }
    .nav-link:hover {
        background: var(--bg);
        color: var(--primary);
    }
    .nav-link.active {
        background: var(--primary-light);
        color: var(--primary);
        font-weight: 700;
    }
    .nav-link.active i {
        opacity: 1;
    }
    .header-actions {
        display: flex;
        align-items: center;
        gap: 10px;
        flex-shrink: 0;
    }
    .search-box {
        position: relative;
        display: flex;
        align-items: center;
    }
    .search-box > i {
        position: absolute;
        left: 13px;
        color: var(--text-weak);
        font-size: .9rem;
        pointer-events: none;
    }
    .search-box input {
        width: 170px;
        height: 40px;
        border: 1px solid var(--border);
        background: var(--bg);
        border-radius: 11px;
        padding: 0 12px 0 38px;
        font-size: .9rem;
        color: var(--text);
        transition: all var(--transition);
    }
    .search-box input::placeholder {
        color: var(--text-weak);
    }
    .search-box input:focus {
        border-color: var(--primary);
        background: #fff;
        box-shadow: 0 0 0 3px rgba(37, 99, 235, .14);
        width: 210px;
    }
    .nav-toggle {
        display: none;
        width: 42px;
        height: 42px;
        border-radius: 11px;
        align-items: center;
        justify-content: center;
        color: var(--text);
        font-size: 1.2rem;
        background: var(--bg);
        border: 1px solid var(--border);
        cursor: pointer;
        transition: all var(--transition);
    }
    .nav-toggle:hover {
        background: var(--primary-light);
        color: var(--primary);
    }

    /* 移动端菜单 */
    .mobile-menu {
        display: none;
        background: #fff;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow);
        padding: 16px 0 22px;
    }
    .mobile-menu.open {
        display: block;
    }
    .mobile-menu-inner {
        max-width: var(--container);
        margin: 0 auto;
        padding: 0 24px;
        display: flex;
        flex-direction: column;
        gap: 6px;
    }
    .mobile-link {
        display: flex;
        align-items: center;
        gap: 10px;
        font-weight: 600;
        font-size: 1rem;
        padding: 12px 14px;
        border-radius: 12px;
        color: var(--text);
        transition: all var(--transition);
    }
    .mobile-link:hover {
        background: var(--bg);
        color: var(--primary);
    }
    .mobile-link.active {
        background: var(--primary-light);
        color: var(--primary);
    }
    .mobile-search {
        position: relative;
        margin-top: 10px;
    }
    .mobile-search i {
        position: absolute;
        left: 14px;
        top: 50%;
        transform: translateY(-50%);
        color: var(--text-weak);
        font-size: .9rem;
    }
    .mobile-search input {
        width: 100%;
        height: 44px;
        border: 1px solid var(--border);
        border-radius: 12px;
        padding: 0 14px 0 40px;
        background: var(--bg);
        font-size: .95rem;
    }
    .mobile-actions {
        display: flex;
        gap: 10px;
        margin-top: 8px;
    }
    .mobile-actions .btn {
        flex: 1;
    }

    /* ========== 分类 Hero ========== */
    .category-hero {
        position: relative;
        background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
        color: #fff;
        padding: 100px 0 92px;
    }
    .category-hero::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(100deg, rgba(2, 6, 23, .88) 0%, rgba(15, 23, 42, .72) 48%, rgba(37, 99, 235, .32) 100%);
    }
    .category-hero .container {
        position: relative;
        z-index: 1;
    }
    .breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: .88rem;
        color: rgba(255, 255, 255, .75);
        margin-bottom: 28px;
        flex-wrap: wrap;
    }
    .breadcrumb a {
        color: rgba(255, 255, 255, .85);
        transition: color var(--transition);
    }
    .breadcrumb a:hover {
        color: #fff;
    }
    .breadcrumb i {
        font-size: .7rem;
        opacity: .6;
    }
    .hero-content {
        max-width: 760px;
    }
    .hero-content h1 {
        font-size: clamp(2.4rem, 5vw, 3.8rem);
        font-weight: 900;
        line-height: 1.15;
        letter-spacing: -.02em;
        margin-bottom: 18px;
        text-shadow: 0 4px 20px rgba(0, 0, 0, .2);
    }
    .hero-content > p {
        font-size: 1.15rem;
        line-height: 1.8;
        color: rgba(255, 255, 255, .88);
        margin-bottom: 30px;
        max-width: 660px;
    }
    .hero-stats {
        display: flex;
        flex-wrap: wrap;
        gap: 28px;
        margin-bottom: 32px;
        padding: 20px 0;
        border-top: 1px solid rgba(255, 255, 255, .14);
        border-bottom: 1px solid rgba(255, 255, 255, .14);
    }
    .hero-stat {
        display: flex;
        flex-direction: column;
    }
    .hero-stat strong {
        font-size: 1.8rem;
        font-weight: 900;
        line-height: 1.2;
        color: #fff;
    }
    .hero-stat span {
        font-size: .85rem;
        color: rgba(255, 255, 255, .7);
    }
    .hero-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 12px;
    }

    /* ========== 通用 Section ========== */
    .section {
        padding: 90px 0;
    }
    .section-alt {
        background: var(--white);
    }
    .section-head {
        max-width: 680px;
        margin-bottom: 48px;
    }
    .section-head.center {
        margin-left: auto;
        margin-right: auto;
        text-align: center;
    }
    .section-head h2 {
        font-size: clamp(1.8rem, 3.4vw, 2.6rem);
        font-weight: 800;
        line-height: 1.25;
        letter-spacing: -.02em;
        color: var(--dark);
        margin-bottom: 14px;
    }
    .section-head p {
        font-size: 1.05rem;
        color: var(--text-weak);
        line-height: 1.75;
    }

    /* ========== 核心说明 ========== */
    .feature-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
    .feature-card {
        background: var(--white);
        border: 1px solid var(--border);
        border-radius: var(--radius-lg);
        padding: 36px 28px;
        transition: all var(--transition);
        position: relative;
        overflow: hidden;
    }
    .feature-card::after {
        content: '';
        position: absolute;
        right: -40px;
        bottom: -40px;
        width: 120px;
        height: 120px;
        border-radius: 50%;
        background: radial-gradient(circle, var(--primary-light), transparent 70%);
        opacity: 0;
        transition: opacity var(--transition);
    }
    .feature-card:hover {
        border-color: rgba(37, 99, 235, .3);
        box-shadow: var(--shadow);
        transform: translateY(-6px);
    }
    .feature-card:hover::after {
        opacity: 1;
    }
    .feature-icon {
        width: 58px;
        height: 58px;
        border-radius: 16px;
        background: var(--primary-light);
        color: var(--primary);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.4rem;
        margin-bottom: 20px;
        transition: all var(--transition);
    }
    .feature-card:nth-child(2) .feature-icon {
        background: var(--accent-light);
        color: var(--accent);
    }
    .feature-card:nth-child(3) .feature-icon {
        background: #dcfce7;
        color: #16a34a;
    }
    .feature-card:hover .feature-icon {
        transform: scale(1.08) rotate(-4deg);
    }
    .feature-card h3 {
        font-size: 1.18rem;
        font-weight: 800;
        margin-bottom: 10px;
        color: var(--dark);
    }
    .feature-card p {
        color: var(--text-weak);
        font-size: .95rem;
        line-height: 1.7;
    }

    /* ========== 分类卡片 ========== */
    .card-section {
        background: var(--bg);
    }
    .card-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
    .topic-card {
        background: var(--white);
        border-radius: var(--radius-lg);
        border: 1px solid var(--border);
        overflow: hidden;
        transition: all var(--transition);
    }
    .topic-card:hover {
        transform: translateY(-8px);
        box-shadow: var(--shadow-lg);
        border-color: rgba(37, 99, 235, .2);
    }
    .card-cover {
        position: relative;
        overflow: hidden;
        aspect-ratio: 16 / 10;
    }
    .card-cover img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform .5s ease;
    }
    .topic-card:hover .card-cover img {
        transform: scale(1.06);
    }
    .card-cover::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(to top, rgba(15, 23, 42, .28), transparent 60%);
    }
    .card-body {
        padding: 24px 24px 26px;
    }
    .card-body h3 {
        font-size: 1.2rem;
        font-weight: 800;
        color: var(--dark);
        margin-bottom: 8px;
        transition: color var(--transition);
    }
    .topic-card:hover .card-body h3 {
        color: var(--primary);
    }
    .card-body p {
        color: var(--text-weak);
        font-size: .93rem;
        line-height: 1.65;
        margin-bottom: 16px;
    }
    .card-link {
        display: inline-flex;
        align-items: center;
        gap: 7px;
        font-weight: 700;
        font-size: .9rem;
        color: var(--primary);
        transition: gap var(--transition), color var(--transition);
    }
    .card-link:hover {
        color: var(--primary-dark);
        gap: 11px;
    }

    /* ========== 编辑精选 + 热门排行 ========== */
    .featured-section {
        background: var(--white);
    }
    .featured-layout {
        display: grid;
        grid-template-columns: 1.5fr 1fr;
        gap: 32px;
        align-items: stretch;
    }
    .featured-main {
        position: relative;
        border-radius: var(--radius-lg);
        overflow: hidden;
        box-shadow: var(--shadow);
        min-height: 420px;
        display: flex;
        align-items: flex-end;
        cursor: pointer;
    }
    .featured-main img {
        position: absolute;
        inset: 0;
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform .6s ease;
    }
    .featured-main:hover img {
        transform: scale(1.04);
    }
    .featured-main::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(to top, rgba(2, 6, 23, .85) 0%, rgba(2, 6, 23, .25) 55%, transparent 100%);
    }
    .featured-main-body {
        position: relative;
        z-index: 1;
        padding: 32px;
        color: #fff;
    }
    .featured-main-body .badge {
        background: var(--accent);
        color: #fff;
        padding: 5px 14px;
        border-radius: 999px;
        font-size: .78rem;
        margin-bottom: 12px;
    }
    .featured-main-body h3 {
        font-size: 1.6rem;
        font-weight: 800;
        line-height: 1.35;
        margin-bottom: 10px;
        max-width: 420px;
    }
    .featured-main-body p {
        color: rgba(255, 255, 255, .82);
        font-size: .95rem;
        line-height: 1.7;
        margin-bottom: 16px;
        max-width: 460px;
    }
    .featured-meta {
        display: flex;
        flex-wrap: wrap;
        gap: 16px;
        font-size: .85rem;
        color: rgba(255, 255, 255, .7);
    }
    .featured-meta i {
        margin-right: 5px;
    }
    .hot-list-wrap {
        background: var(--bg);
        border: 1px solid var(--border);
        border-radius: var(--radius-lg);
        padding: 28px;
        display: flex;
        flex-direction: column;
    }
    .hot-list-head {
        display: flex;
        align-items: center;
        gap: 10px;
        margin-bottom: 22px;
        font-size: 1.15rem;
        font-weight: 800;
        color: var(--dark);
    }
    .hot-list-head i {
        color: var(--accent);
    }
    .hot-list {
        display: flex;
        flex-direction: column;
        gap: 2px;
        flex: 1;
    }
    .hot-item {
        display: flex;
        align-items: center;
        gap: 14px;
        padding: 13px 10px;
        border-radius: 12px;
        transition: all var(--transition);
        border-bottom: 1px solid var(--border);
    }
    .hot-item:last-child {
        border-bottom: none;
    }
    .hot-item:hover {
        background: var(--white);
        box-shadow: var(--shadow-sm);
        transform: translateX(4px);
    }
    .hot-num {
        font-size: 1.35rem;
        font-weight: 900;
        color: var(--primary-light);
        line-height: 1;
        width: 34px;
        text-align: center;
        font-style: italic;
    }
    .hot-item:nth-child(1) .hot-num {
        color: var(--accent);
    }
    .hot-item:nth-child(2) .hot-num {
        color: #f59e0b;
    }
    .hot-item:nth-child(3) .hot-num {
        color: #10b981;
    }
    .hot-item:nth-child(n+4) .hot-num {
        color: #94a3b8;
    }
    .hot-item-text {
        flex: 1;
    }
    .hot-item-text h4 {
        font-size: .95rem;
        font-weight: 700;
        color: var(--dark);
        line-height: 1.45;
        transition: color var(--transition);
    }
    .hot-item:hover .hot-item-text h4 {
        color: var(--primary);
    }
    .hot-item-text span {
        font-size: .78rem;
        color: var(--text-weak);
        display: block;
        margin-top: 2px;
    }
    .hot-item i {
        color: var(--border);
        font-size: .8rem;
        transition: all var(--transition);
    }
    .hot-item:hover i {
        color: var(--primary);
        transform: translateX(3px);
    }

    /* ========== 数据统计 ========== */
    .stats-section {
        position: relative;
        background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
        padding: 90px 0;
        color: #fff;
    }
    .stats-section::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(120deg, rgba(15, 23, 42, .92), rgba(37, 99, 235, .78));
    }
    .stats-section .container {
        position: relative;
        z-index: 1;
    }
    .stats-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 28px;
    }
    .stat-block {
        text-align: center;
        padding: 32px 16px;
        border-radius: var(--radius-lg);
        background: rgba(255, 255, 255, .1);
        border: 1px solid rgba(255, 255, 255, .16);
        backdrop-filter: blur(8px);
        transition: all var(--transition);
    }
    .stat-block:hover {
        background: rgba(255, 255, 255, .18);
        transform: translateY(-4px);
    }
    .stat-block strong {
        display: block;
        font-size: 2.6rem;
        font-weight: 900;
        line-height: 1.2;
        color: #fff;
    }
    .stat-block span {
        font-size: .95rem;
        color: rgba(255, 255, 255, .78);
        margin-top: 6px;
        display: block;
    }

    /* ========== FAQ ========== */
    .faq-section {
        background: var(--bg);
    }
    .faq-list {
        max-width: 840px;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        gap: 14px;
    }
    .faq-item {
        background: var(--white);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        overflow: hidden;
        transition: all var(--transition);
    }
    .faq-item:hover {
        border-color: rgba(37, 99, 235, .25);
    }
    .faq-item.open {
        border-color: var(--primary);
        box-shadow: var(--shadow-sm);
    }
    .faq-question {
        width: 100%;
        display: flex;
        align-items: center;
        gap: 14px;
        padding: 18px 22px;
        font-weight: 700;
        font-size: 1rem;
        color: var(--dark);
        cursor: pointer;
        text-align: left;
        transition: all var(--transition);
        background: transparent;
    }
    .faq-question:hover {
        color: var(--primary);
    }
    .faq-icon {
        width: 30px;
        height: 30px;
        flex-shrink: 0;
        border-radius: 9px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: var(--primary-light);
        color: var(--primary);
        font-size: .8rem;
        transition: all var(--transition);
    }
    .faq-item.open .faq-icon {
        background: var(--primary);
        color: #fff;
        transform: rotate(45deg);
    }
    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height .35s ease;
    }
    .faq-item.open .faq-answer {
        max-height: 320px;
    }
    .faq-answer p {
        padding: 0 22px 20px 66px;
        color: var(--text-weak);
        font-size: .95rem;
        line-height: 1.75;
    }

    /* ========== CTA ========== */
    .cta-section {
        position: relative;
        background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
        padding: 96px 0;
        color: #fff;
        text-align: center;
    }
    .cta-section::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(2, 6, 23, .92), rgba(37, 99, 235, .72));
    }
    .cta-section .container {
        position: relative;
        z-index: 1;
    }
    .cta-section h2 {
        font-size: clamp(1.8rem, 3.6vw, 2.8rem);
        font-weight: 900;
        line-height: 1.3;
        margin-bottom: 16px;
    }
    .cta-section p {
        font-size: 1.1rem;
        color: rgba(255, 255, 255, .84);
        max-width: 560px;
        margin: 0 auto 32px;
        line-height: 1.75;
    }
    .cta-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 14px;
        justify-content: center;
    }

    /* ========== 页脚 ========== */
    .site-footer {
        background: var(--dark);
        color: rgba(255, 255, 255, .72);
        padding: 60px 0 0;
    }
    .site-footer .logo {
        color: #fff;
        margin-bottom: 18px;
    }
    .site-footer .logo-icon {
        background: linear-gradient(135deg, var(--primary), #4f46e5);
        box-shadow: 0 4px 14px rgba(37, 99, 235, .4);
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 1.4fr 1fr;
        gap: 40px;
        padding-bottom: 36px;
        border-bottom: 1px solid rgba(255, 255, 255, .12);
    }
    .footer-brand {
        max-width: 420px;
    }
    .footer-desc {
        font-size: .95rem;
        line-height: 1.7;
        color: rgba(255, 255, 255, .6);
        margin-top: 6px;
    }
    .footer-links h4 {
        color: #fff;
        font-size: 1.05rem;
        font-weight: 700;
        margin-bottom: 16px;
    }
    .footer-links ul {
        display: flex;
        flex-direction: column;
        gap: 8px;
    }
    .footer-links ul a {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-size: .93rem;
        color: rgba(255, 255, 255, .64);
        transition: all var(--transition);
    }
    .footer-links ul a:hover {
        color: #fff;
        padding-left: 4px;
    }
    .footer-links ul a i {
        font-size: .75rem;
        color: var(--primary);
    }
    .footer-bottom {
        padding: 22px 0;
        text-align: center;
        font-size: .88rem;
        color: rgba(255, 255, 255, .45);
    }

    /* ========== 响应式断点 ========== */
    @media (max-width: 1024px) {
        .nav-links {
            display: none;
        }
        .header-actions .search-box {
            display: none;
        }
        .nav-toggle {
            display: flex;
        }
        .header-actions .btn-ghost {
            display: none;
        }
        .featured-layout {
            grid-template-columns: 1fr;
        }
        .card-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .section {
            padding: 72px 0;
        }
        .category-hero {
            padding: 80px 0 72px;
        }
        .stats-grid {
            grid-template-columns: repeat(2, 1fr);
        }
    }
    @media (max-width: 768px) {
        .container {
            padding: 0 18px;
        }
        .header-container {
            height: 68px;
        }
        .logo-text {
            font-size: 1.1rem;
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            font-size: 1rem;
            border-radius: 11px;
        }
        .header-actions .btn-sm {
            padding: 8px 12px;
            font-size: .82rem;
        }
        .category-hero {
            padding: 64px 0 60px;
        }
        .hero-content h1 {
            font-size: 2.2rem;
        }
        .hero-content > p {
            font-size: 1rem;
        }
        .hero-stats {
            gap: 18px;
            padding: 16px 0;
        }
        .hero-stat strong {
            font-size: 1.5rem;
        }
        .hero-stat span {
            font-size: .78rem;
        }
        .feature-grid {
            grid-template-columns: 1fr;
        }
        .card-grid {
            grid-template-columns: 1fr;
            gap: 20px;
        }
        .featured-main {
            min-height: 340px;
        }
        .featured-main-body {
            padding: 24px;
        }
        .featured-main-body h3 {
            font-size: 1.35rem;
        }
        .hot-list-wrap {
            padding: 22px;
        }
        .section-head {
            margin-bottom: 36px;
        }
        .section-head h2 {
            font-size: 1.7rem;
        }
        .stats-grid {
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .stat-block {
            padding: 24px 12px;
        }
        .stat-block strong {
            font-size: 2rem;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 28px;
        }
        .cta-section {
            padding: 72px 0;
        }
        .faq-answer p {
            padding-left: 22px;
        }
    }
    @media (max-width: 520px) {
        .container {
            padding: 0 14px;
        }
        .header-actions .btn {
            display: none;
        }
        .logo-text {
            font-size: 1rem;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
        }
        .hero-content h1 {
            font-size: 1.9rem;
        }
        .hero-content > p {
            font-size: .95rem;
        }
        .hero-actions .btn {
            width: 100%;
        }
        .hero-stats {
            flex-direction: row;
            flex-wrap: wrap;
        }
        .hero-stat {
            min-width: 45%;
        }
        .card-body {
            padding: 20px;
        }
        .featured-main {
            min-height: 280px;
        }
        .featured-main-body h3 {
            font-size: 1.2rem;
        }
        .featured-meta {
            gap: 10px;
            font-size: .8rem;
        }
        .stats-grid {
            grid-template-columns: 1fr;
        }
        .stat-block {
            display: flex;
            align-items: center;
            justify-content: space-between;
            text-align: left;
            padding: 18px 20px;
        }
        .stat-block strong {
            font-size: 1.9rem;
        }
        .stat-block span {
            margin-top: 0;
        }
        .cta-actions .btn {
            width: 100%;
        }
    }