/* roulang page: index */
:root {
            --primary: #1a56db;
            --primary-dark: #10409a;
            --primary-light: #3b82f6;
            --primary-soft: #e8f0fe;
            --secondary: #0ea5e9;
            --accent: #f59e0b;
            --bg: #f5f8fc;
            --card-bg: #ffffff;
            --text: #1a202c;
            --text-muted: #5b6b7c;
            --text-faint: #8a99aa;
            --border: #dfe7f0;
            --border-light: #edf2f8;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(26, 56, 112, 0.06);
            --shadow: 0 4px 16px rgba(26, 56, 112, 0.07);
            --shadow-lg: 0 12px 36px rgba(26, 56, 112, 0.1);
            --shadow-xl: 0 20px 48px rgba(26, 56, 112, 0.14);
            --spacing-xs: 4px;
            --spacing-sm: 8px;
            --spacing: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-2xl: 88px;
            --container: 1200px;
            --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'WenQuanYi Micro Hei', sans-serif;
            --transition: 0.22s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

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

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

        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--text);
            line-height: 1.65;
            font-size: 16px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            padding-bottom: 64px;
        }

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

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

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

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

        button {
            cursor: pointer;
            background: none;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 3px solid rgba(26, 86, 219, 0.35);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
        }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 var(--spacing-md);
            width: 100%;
        }

        /* ===== 头部导航 ===== */
        .site-header {
            background: var(--card-bg);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-sm);
        }

        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: var(--spacing);
            flex-wrap: wrap;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            font-weight: 800;
            font-size: 1.25rem;
            letter-spacing: 0.5px;
            color: var(--primary-dark);
            white-space: nowrap;
            transition: color var(--transition);
        }

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

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 10px;
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .header-search-mini {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 6px 14px;
            width: 220px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .header-search-mini:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(26, 86, 219, 0.1);
        }

        .header-search-mini input {
            background: transparent;
            border: none;
            outline: none;
            flex: 1;
            font-size: 0.9rem;
            color: var(--text);
        }

        .header-search-mini i {
            color: var(--text-faint);
            font-size: 0.9rem;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .btn-header {
            padding: 8px 18px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition);
            white-space: nowrap;
        }

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

        .btn-header-outline:hover {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(26, 86, 219, 0.25);
        }

        .btn-header-solid {
            background: var(--primary);
            color: #fff;
            border: 2px solid var(--primary);
        }

        .btn-header-solid:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            box-shadow: 0 4px 12px rgba(26, 86, 219, 0.3);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: var(--bg);
            border: 1px solid var(--border);
            color: var(--text);
            font-size: 1.2rem;
            align-items: center;
            justify-content: center;
            transition: background var(--transition);
        }

        .mobile-toggle:hover {
            background: var(--border-light);
        }

        /* 分类横滑 Chip 导航 */
        .chip-nav {
            border-top: 1px solid var(--border-light);
            background: var(--card-bg);
            padding: 10px 0;
        }

        .chip-nav .container {
            display: flex;
            align-items: center;
            gap: 10px;
            overflow-x: auto;
            scrollbar-width: thin;
            scrollbar-color: var(--primary-light) transparent;
            -webkit-overflow-scrolling: touch;
            padding-bottom: 2px;
        }

        .chip-nav .container::-webkit-scrollbar {
            height: 4px;
        }

        .chip-nav .container::-webkit-scrollbar-thumb {
            background: var(--primary-light);
            border-radius: 999px;
        }

        .chip-nav .container::-webkit-scrollbar-track {
            background: transparent;
        }

        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 999px;
            font-weight: 500;
            font-size: 0.88rem;
            color: var(--text-muted);
            background: var(--bg);
            border: 1px solid var(--border);
            white-space: nowrap;
            transition: all var(--transition);
            flex-shrink: 0;
        }

        .nav-chip i {
            margin-right: 6px;
            font-size: 0.8rem;
            color: var(--text-faint);
            transition: color var(--transition);
        }

        .nav-chip:hover {
            background: var(--primary-soft);
            color: var(--primary);
            border-color: var(--primary-light);
        }

        .nav-chip:hover i {
            color: var(--primary);
        }

        .nav-chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 12px rgba(26, 86, 219, 0.25);
        }

        .nav-chip.active i {
            color: #fff;
        }

        /* ===== Hero ===== */
        .hero {
            background: linear-gradient(135deg, #0f2847 0%, #1a3e6e 35%, #1a56db 100%);
            position: relative;
            overflow: hidden;
            padding: var(--spacing-2xl) 0 var(--spacing-xl);
            color: #fff;
            text-align: center;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            pointer-events: none;
        }

        .hero::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg, rgba(15, 40, 71, 0.55) 0%, rgba(26, 86, 219, 0.25) 100%);
            pointer-events: none;
        }

        .hero .container {
            position: relative;
            z-index: 2;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: var(--spacing-md);
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.25);
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 0.88rem;
            font-weight: 500;
            color: #e0eaff;
            letter-spacing: 0.5px;
        }

        .hero-badge i {
            color: #fbbf24;
        }

        .hero h1 {
            color: #fff;
            font-size: 2.6rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            max-width: 780px;
            margin: 0 auto;
            line-height: 1.25;
        }

        .hero-desc {
            max-width: 680px;
            font-size: 1.08rem;
            color: #dbe4f5;
            line-height: 1.8;
            margin: 0 auto;
            letter-spacing: 0.2px;
        }

        .hero-search {
            width: 100%;
            max-width: 620px;
            display: flex;
            align-items: center;
            gap: 0;
            background: rgba(255, 255, 255, 0.96);
            border-radius: 999px;
            padding: 5px;
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.18);
            margin-top: var(--spacing);
        }

        .hero-search i {
            color: var(--text-faint);
            font-size: 1.05rem;
            padding-left: 18px;
            flex-shrink: 0;
        }

        .hero-search input {
            flex: 1;
            padding: 14px 16px 14px 12px;
            border: none;
            outline: none;
            background: transparent;
            font-size: 1rem;
            color: var(--text);
            min-width: 0;
        }

        .hero-search input::placeholder {
            color: #a0b0c0;
        }

        .hero-search button {
            background: var(--primary);
            color: #fff;
            border-radius: 999px;
            padding: 12px 28px;
            font-weight: 600;
            font-size: 0.95rem;
            white-space: nowrap;
            transition: all var(--transition);
            flex-shrink: 0;
        }

        .hero-search button:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 16px rgba(16, 64, 154, 0.35);
            transform: translateY(-1px);
        }

        .hero-hot-tags {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            justify-content: center;
            margin-top: var(--spacing-sm);
        }

        .hero-hot-tags span {
            color: #a8bbdf;
            font-size: 0.88rem;
            font-weight: 500;
        }

        .hero-hot-tags .tag-pill {
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.22);
            color: #e8f0ff;
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 500;
            transition: all var(--transition);
            cursor: pointer;
        }

        .hero-hot-tags .tag-pill:hover {
            background: rgba(255, 255, 255, 0.25);
            border-color: rgba(255, 255, 255, 0.4);
            color: #fff;
        }

        .hero-stats {
            display: flex;
            gap: var(--spacing-lg);
            margin-top: var(--spacing-md);
            flex-wrap: wrap;
            justify-content: center;
        }

        .hero-stat {
            text-align: center;
            min-width: 120px;
        }

        .hero-stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
        }

        .hero-stat-label {
            font-size: 0.85rem;
            color: #b8c9e5;
            margin-top: 2px;
        }

        /* ===== 通用板块样式 ===== */
        .section {
            padding: var(--spacing-xl) 0;
        }

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

        .section-header {
            margin-bottom: var(--spacing-lg);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .section-header.center {
            text-align: center;
            align-items: center;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary-soft);
            color: var(--primary);
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            align-self: flex-start;
        }

        .section-header.center .section-tag {
            align-self: center;
        }

        .section-title {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.3px;
            color: var(--text);
        }

        .section-desc {
            color: var(--text-muted);
            font-size: 1rem;
            line-height: 1.7;
            max-width: 720px;
        }

        .section-header.center .section-desc {
            margin: 0 auto;
        }

        /* ===== 卖点三连 ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
            margin-top: var(--spacing-sm);
        }

        .feature-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: linear-gradient(180deg, var(--primary), var(--secondary));
            opacity: 0;
            transition: opacity var(--transition);
        }

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

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

        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: var(--primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--primary);
            margin-bottom: var(--spacing);
            transition: all var(--transition);
        }

        .feature-card:hover .feature-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(-3deg) scale(1.05);
        }

        .feature-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            color: var(--text);
        }

        .feature-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* ===== 最新动态 ===== */
        .news-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .news-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

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

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

        .news-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform 0.4s ease;
        }

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

        .news-card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(8px);
            color: var(--primary);
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 0.78rem;
            font-weight: 600;
        }

        .news-card-body {
            padding: var(--spacing-md);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
            flex: 1;
        }

        .news-card-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            line-height: 1.45;
        }

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

        .news-card-meta {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            color: var(--text-faint);
            font-size: 0.82rem;
            margin-top: auto;
            padding-top: var(--spacing-sm);
            border-top: 1px solid var(--border-light);
        }

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

        /* ===== 快速解答 FAQ ===== */
        .faq-wrapper {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-sm);
            padding: 18px 22px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            transition: color var(--transition);
            user-select: none;
        }

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

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

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

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

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

        .faq-answer-inner {
            padding: 0 22px 20px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.75;
        }

        /* ===== 资讯区 ===== */
        .info-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: var(--spacing-lg);
        }

        .info-main {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .info-list-item {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: var(--spacing-md);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

        .info-list-item:hover {
            box-shadow: var(--shadow);
            border-color: var(--primary-light);
            transform: translateX(2px);
        }

        .info-list-thumb {
            width: 100px;
            height: 70px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
        }

        .info-list-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-sm);
        }

        .info-list-content {
            flex: 1;
            min-width: 0;
        }

        .info-list-content h3 {
            font-size: 0.98rem;
            font-weight: 600;
            line-height: 1.45;
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .info-list-content p {
            color: var(--text-muted);
            font-size: 0.85rem;
            line-height: 1.55;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .info-list-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-faint);
            font-size: 0.78rem;
            flex-shrink: 0;
            text-align: right;
        }

        .info-sidebar {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
        }

        .sidebar-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            box-shadow: var(--shadow-sm);
        }

        .sidebar-card h3 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            color: var(--text);
        }

        .sidebar-picks {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .sidebar-pick {
            display: flex;
            gap: var(--spacing-sm);
            align-items: center;
            padding: var(--spacing-xs) 0;
            border-bottom: 1px solid var(--border-light);
            transition: all var(--transition);
        }

        .sidebar-pick:last-child {
            border-bottom: none;
        }

        .sidebar-pick img {
            width: 56px;
            height: 42px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }

        .sidebar-pick span {
            font-size: 0.85rem;
            color: var(--text);
            line-height: 1.4;
            transition: color var(--transition);
        }

        .sidebar-pick:hover span {
            color: var(--primary);
        }

        /* ===== 安全体系 ===== */
        .safety-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }

        .safety-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            box-shadow: var(--shadow-sm);
            text-align: center;
            transition: all var(--transition);
        }

        .safety-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-2px);
            border-color: var(--primary-light);
        }

        .safety-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-soft), #f0f7ff);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--primary);
            margin: 0 auto var(--spacing);
            transition: all var(--transition);
        }

        .safety-card:hover .safety-icon {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 8px 20px rgba(26, 86, 219, 0.3);
        }

        .safety-card h3 {
            font-size: 0.98rem;
            font-weight: 700;
            margin-bottom: var(--spacing-xs);
        }

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

        /* ===== 口碑短视频墙 ===== */
        .video-wall {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }

        .video-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            aspect-ratio: 3 / 4;
            display: flex;
            flex-direction: column;
            position: relative;
        }

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

        .video-thumb {
            flex: 1;
            position: relative;
            overflow: hidden;
        }

        .video-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }

        .video-play {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.9);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.2rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
            transition: all var(--transition);
        }

        .video-card:hover .video-play {
            background: var(--primary);
            color: #fff;
            transform: translate(-50%, -50%) scale(1.1);
        }

        .video-caption {
            padding: 12px 14px;
            background: var(--card-bg);
            border-top: 1px solid var(--border-light);
        }

        .video-caption span {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text);
            display: block;
            line-height: 1.4;
        }

        .video-caption small {
            font-size: 0.75rem;
            color: var(--text-faint);
            margin-top: 2px;
            display: block;
        }

        /* ===== App/CTA 区 ===== */
        .cta-app {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--secondary) 100%);
            border-radius: var(--radius-xl);
            padding: var(--spacing-xl);
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-app::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            pointer-events: none;
        }

        .cta-app::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -5%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            pointer-events: none;
        }

        .cta-app .container {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-lg);
            flex-wrap: wrap;
        }

        .cta-app-content {
            max-width: 560px;
        }

        .cta-app-content h2 {
            color: #fff;
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: var(--spacing-sm);
        }

        .cta-app-content p {
            color: #d4e2f8;
            font-size: 1rem;
            line-height: 1.7;
            margin-bottom: var(--spacing-md);
        }

        .cta-app-buttons {
            display: flex;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }

        .btn-app {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: #fff;
            color: var(--primary-dark);
            border-radius: 12px;
            padding: 12px 22px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
        }

        .btn-app:hover {
            background: #f0f5ff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.22);
        }

        .btn-app i {
            font-size: 1.4rem;
        }

        .cta-app-visual {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }

        .cta-app-badge {
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.22);
            border-radius: var(--radius);
            padding: 14px 20px;
            text-align: center;
            backdrop-filter: blur(8px);
            min-width: 100px;
        }

        .cta-app-badge i {
            font-size: 1.6rem;
            color: #fbbf24;
            margin-bottom: 6px;
        }

        .cta-app-badge span {
            display: block;
            font-size: 0.8rem;
            color: #d4e2f8;
        }

        .cta-app-badge strong {
            font-size: 1.2rem;
            color: #fff;
            display: block;
            margin-top: 2px;
        }

        /* ===== 底部固定转化条 ===== */
        .fixed-cta-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(16px);
            border-top: 1px solid var(--border);
            box-shadow: 0 -4px 20px rgba(26, 56, 112, 0.1);
            z-index: 999;
            padding: 10px 0;
        }

        .fixed-cta-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing);
        }

        .fixed-cta-info {
            display: flex;
            flex-direction: column;
            gap: 2px;
            min-width: 0;
        }

        .fixed-cta-info strong {
            font-size: 0.92rem;
            font-weight: 700;
            color: var(--text);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .fixed-cta-info span {
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        .fixed-cta-buttons {
            display: flex;
            gap: var(--spacing-sm);
            flex-shrink: 0;
        }

        .btn-fixed {
            padding: 10px 20px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.88rem;
            white-space: nowrap;
            transition: all var(--transition);
        }

        .btn-fixed-light {
            background: var(--bg);
            color: var(--text);
            border: 1px solid var(--border);
        }

        .btn-fixed-light:hover {
            background: var(--border-light);
        }

        .btn-fixed-primary {
            background: var(--primary);
            color: #fff;
            border: 1px solid var(--primary);
        }

        .btn-fixed-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            box-shadow: 0 4px 14px rgba(26, 86, 219, 0.3);
            transform: translateY(-1px);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0f1e3a;
            color: #b0c0d8;
            padding: var(--spacing-xl) 0 var(--spacing-md);
            margin-top: auto;
        }

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

        .footer-brand h3 {
            color: #fff;
            font-size: 1.2rem;
            font-weight: 800;
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.5px;
        }

        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.7;
            color: #8fa5c5;
            max-width: 320px;
        }

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

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul a {
            color: #8fa5c5;
            font-size: 0.88rem;
            transition: color var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: var(--spacing-md);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            font-size: 0.82rem;
            color: #6b80a0;
        }

        .footer-bottom a {
            color: #8fa5c5;
        }

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

        /* ===== 响应式设计 ===== */
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }

            .hero h1 {
                font-size: 2.1rem;
            }

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

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

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

            .info-layout {
                grid-template-columns: 1fr;
            }

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

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

        @media (max-width: 768px) {
            body {
                font-size: 15px;
                padding-bottom: 72px;
            }

            .header-search-mini {
                display: none;
            }

            .mobile-toggle {
                display: flex;
            }

            .header-actions .btn-header {
                display: none;
            }

            .hero {
                padding: var(--spacing-lg) 0;
            }

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

            .hero-desc {
                font-size: 0.95rem;
                line-height: 1.7;
            }

            .hero-search {
                flex-wrap: wrap;
                border-radius: var(--radius);
                padding: 10px;
            }

            .hero-search input {
                padding: 10px 14px;
                font-size: 0.95rem;
            }

            .hero-search button {
                padding: 10px 20px;
                font-size: 0.88rem;
            }

            .hero-stats {
                gap: var(--spacing);
            }

            .hero-stat-number {
                font-size: 1.5rem;
            }

            .section {
                padding: var(--spacing-lg) 0;
            }

            .section-title {
                font-size: 1.5rem;
            }

            .feature-grid,
            .news-list,
            .safety-grid,
            .video-wall,
            .info-sidebar {
                grid-template-columns: 1fr;
            }

            .news-card-img {
                height: 160px;
            }

            .info-list-item {
                flex-wrap: wrap;
                gap: var(--spacing-sm);
            }

            .info-list-thumb {
                width: 80px;
                height: 56px;
            }

            .info-list-meta {
                width: 100%;
                text-align: left;
                justify-content: flex-start;
            }

            .cta-app {
                padding: var(--spacing-lg) var(--spacing-md);
            }

            .cta-app-content h2 {
                font-size: 1.4rem;
            }

            .cta-app .container {
                flex-direction: column;
                align-items: flex-start;
            }

            .cta-app-visual {
                width: 100%;
                justify-content: flex-start;
            }

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

            .fixed-cta-bar {
                padding: 8px 0;
            }

            .fixed-cta-info span {
                display: none;
            }

            .btn-fixed {
                padding: 8px 14px;
                font-size: 0.8rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }

            .hero h1 {
                font-size: 1.4rem;
            }

            .hero-desc {
                font-size: 0.88rem;
                -webkit-line-clamp: 4;
                display: -webkit-box;
                -webkit-box-orient: vertical;
                overflow: hidden;
            }

            .hero-search {
                padding: 8px;
            }

            .hero-search input {
                font-size: 0.88rem;
                padding: 10px 8px;
            }

            .hero-search button {
                padding: 10px 14px;
                font-size: 0.82rem;
            }

            .hero-hot-tags {
                gap: 6px;
            }

            .hero-hot-tags .tag-pill {
                font-size: 0.75rem;
                padding: 5px 10px;
            }

            .hero-stat {
                min-width: 80px;
            }

            .hero-stat-number {
                font-size: 1.2rem;
            }

            .section-title {
                font-size: 1.3rem;
            }

            .feature-card {
                padding: var(--spacing-md);
            }

            .video-card {
                aspect-ratio: 3 / 3.5;
            }

            .fixed-cta-buttons {
                gap: 6px;
            }

            .btn-fixed {
                padding: 8px 10px;
                font-size: 0.75rem;
            }
        }