/* roulang page: index */
:root {
            --primary: #1a6fb5;
            --primary-dark: #145a94;
            --primary-light: #e8f1f9;
            --secondary: #f0a35e;
            --secondary-light: #fef4ec;
            --accent: #2ecc8f;
            --dark: #1a2540;
            --text: #334155;
            --text-light: #64748b;
            --text-muted: #94a3b8;
            --bg: #f6f9fc;
            --white: #ffffff;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(26, 111, 181, 0.06);
            --shadow: 0 4px 24px rgba(26, 111, 181, 0.08);
            --shadow-lg: 0 10px 44px rgba(26, 111, 181, 0.14);
            --transition: all .3s ease;
            --header-height: 72px;
            --section-gap: 84px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            letter-spacing: .01em;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select {
            font-family: inherit;
            font-size: inherit;
        }
        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-padding {
            padding: 84px 0;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 12px;
            line-height: 1.3;
            letter-spacing: -.02em;
        }
        .section-desc {
            color: var(--text-light);
            font-size: 1rem;
            max-width: 720px;
            margin-bottom: 36px;
            line-height: 1.7;
        }
        .section-head {
            margin-bottom: 44px;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: .82rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 30px;
            margin-bottom: 12px;
            letter-spacing: .02em;
        }

        /* 按钮 */
        .btn-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 600;
            font-size: .95rem;
            border: 2px solid transparent;
            transition: var(--transition);
            cursor: pointer;
            outline: none;
        }
        .btn-custom-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-custom-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(26, 111, 181, .25);
        }
        .btn-custom-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(26, 111, 181, .15);
        }
        .btn-custom-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-custom-outline:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .btn-custom-light {
            background: var(--white);
            color: var(--primary);
            border-color: transparent;
            box-shadow: var(--shadow);
        }
        .btn-custom-light:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }
        .btn-custom-large {
            padding: 14px 36px;
            font-size: 1.05rem;
        }
        .btn-custom:focus-visible {
            outline: 3px solid rgba(26, 111, 181, .35);
            outline-offset: 2px;
        }

        /* 导航 */
        .site-header {
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-height);
        }
        .site-header .navbar {
            padding: 0;
            min-height: var(--header-height);
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.2rem;
            color: var(--dark);
            letter-spacing: -.01em;
            line-height: 1.2;
        }
        .brand-logo i {
            color: var(--primary);
            font-size: 1.5rem;
            background: var(--primary-light);
            width: 42px;
            height: 42px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
        }
        .site-header .nav-link {
            font-weight: 500;
            color: var(--text);
            padding: 8px 18px !important;
            border-radius: 30px;
            transition: var(--transition);
            font-size: .95rem;
        }
        .site-header .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .site-header .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .header-search {
            position: relative;
            max-width: 220px;
        }
        .header-search input {
            border: 1px solid var(--border);
            border-radius: 30px;
            padding: 7px 38px 7px 16px;
            font-size: .88rem;
            background: var(--bg);
            transition: var(--transition);
            outline: none;
            width: 100%;
        }
        .header-search input:focus {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(26, 111, 181, .12);
        }
        .header-search i {
            position: absolute;
            right: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-light);
            font-size: .85rem;
            pointer-events: none;
        }
        .header-cta .btn-custom {
            padding: 8px 18px;
            font-size: .9rem;
        }
        .navbar-toggler-custom {
            background: none;
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 6px 10px;
            font-size: 1.1rem;
            color: var(--text);
        }
        .navbar-toggler-custom:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        /* Hero 白皮书获客 */
        .hero-section {
            padding: 80px 0 64px;
            position: relative;
            background: linear-gradient(135deg, var(--primary-light) 0%, #f0f6fc 50%, var(--bg) 100%);
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(26, 111, 181, .08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 120px;
            background: linear-gradient(to bottom, transparent, var(--bg));
            pointer-events: none;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--white);
            color: var(--primary);
            font-size: .82rem;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 30px;
            box-shadow: var(--shadow-sm);
            margin-bottom: 16px;
            border: 1px solid rgba(26, 111, 181, .1);
        }
        .hero-title {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--dark);
            line-height: 1.25;
            letter-spacing: -.02em;
            margin-bottom: 18px;
        }
        .hero-title .highlight {
            color: var(--primary);
        }
        .hero-desc {
            font-size: 1.05rem;
            color: var(--text);
            max-width: 580px;
            line-height: 1.75;
            margin-bottom: 30px;
        }
        .hero-cta-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 36px;
        }
        .hero-stats {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
            border-top: 1px solid rgba(26, 111, 181, .12);
            padding-top: 22px;
            max-width: 520px;
        }
        .hero-stat-item {
            text-align: left;
        }
        .hero-stat-item .num {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .hero-stat-item .label {
            font-size: .84rem;
            color: var(--text-light);
            margin-top: 2px;
        }

        /* Hero白皮书卡片 */
        .whitepaper-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            overflow: hidden;
            max-width: 420px;
            margin-left: auto;
            position: relative;
            border: 1px solid rgba(255, 255, 255, .6);
        }
        .whitepaper-cover {
            position: relative;
            height: 180px;
            background: url('/assets/images/coverpic/cover-1.jpg') center/cover no-repeat;
            display: flex;
            align-items: flex-end;
            padding: 20px;
        }
        .whitepaper-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(26, 111, 181, .65), transparent 60%);
        }
        .whitepaper-cover .wp-title {
            position: relative;
            z-index: 1;
            color: #fff;
            font-size: 1.3rem;
            font-weight: 700;
            text-shadow: 0 2px 8px rgba(0, 0, 0, .3);
        }
        .whitepaper-body {
            padding: 24px;
        }
        .whitepaper-body .wp-subtitle {
            font-size: .82rem;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: .08em;
            margin-bottom: 12px;
        }
        .wp-toc {
            list-style: none;
            margin: 0 0 20px;
            padding: 0;
        }
        .wp-toc li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: .92rem;
            color: var(--text);
            margin-bottom: 10px;
            line-height: 1.5;
        }
        .wp-toc li i {
            color: var(--accent);
            margin-top: 3px;
            font-size: .82rem;
            flex-shrink: 0;
        }
        .wp-form .form-control-custom {
            width: 100%;
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 10px 14px;
            font-size: .92rem;
            margin-bottom: 10px;
            transition: var(--transition);
            outline: none;
            background: var(--bg);
        }
        .wp-form .form-control-custom:focus {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(26, 111, 181, .1);
        }
        .wp-form .btn-custom {
            width: 100%;
            justify-content: center;
        }
        .wp-form-note {
            font-size: .78rem;
            color: var(--text-muted);
            text-align: center;
            margin-top: 8px;
        }

        /* 合集目录 / 卖点三连 */
        .directory-section {
            background: var(--white);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .directory-card {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 28px;
            height: 100%;
            transition: var(--transition);
            border: 1px solid transparent;
            position: relative;
            overflow: hidden;
        }
        .directory-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            background: #fff;
            border-color: rgba(26, 111, 181, .1);
        }
        .directory-card .icon-wrap {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 18px;
            background: var(--primary-light);
            color: var(--primary);
        }
        .directory-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 10px;
        }
        .directory-card p {
            color: var(--text-light);
            font-size: .92rem;
            line-height: 1.65;
            margin-bottom: 14px;
        }
        .directory-card .tag-list {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }
        .directory-card .tag-item {
            background: rgba(26, 111, 181, .08);
            color: var(--primary);
            font-size: .78rem;
            padding: 3px 10px;
            border-radius: 20px;
            font-weight: 500;
        }

        /* 相关推荐 */
        .recommend-section {
            background: var(--bg);
        }
        .recommend-card {
            border-radius: var(--radius);
            overflow: hidden;
            background: var(--white);
            box-shadow: var(--shadow);
            transition: var(--transition);
            height: 100%;
            border: 1px solid var(--border);
        }
        .recommend-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(26, 111, 181, .15);
        }
        .recommend-card .rc-img {
            height: 180px;
            position: relative;
            overflow: hidden;
        }
        .recommend-card .rc-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .recommend-card:hover .rc-img img {
            transform: scale(1.04);
        }
        .recommend-card .rc-img .badge-hot {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(240, 163, 94, .92);
            color: #fff;
            font-size: .75rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 20px;
            backdrop-filter: blur(4px);
        }
        .recommend-card .rc-img .badge-star {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(46, 204, 143, .9);
            color: #fff;
            font-size: .75rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 20px;
        }
        .recommend-card .rc-body {
            padding: 20px;
        }
        .recommend-card .rc-body h3 {
            font-size: 1.02rem;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .recommend-card .rc-body p {
            font-size: .86rem;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 14px;
        }
        .recommend-card .rc-meta {
            display: flex;
            gap: 12px;
            align-items: center;
            font-size: .8rem;
            color: var(--text-muted);
        }
        .recommend-card .rc-meta i {
            margin-right: 4px;
        }

        /* 资讯区 */
        .news-section {
            background: var(--white);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .news-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .news-list li {
            padding: 16px 4px;
            border-bottom: 1px solid #f1f5f9;
            transition: var(--transition);
        }
        .news-list li:last-child {
            border-bottom: none;
        }
        .news-list li:hover {
            background: rgba(26, 111, 181, .02);
            padding-left: 10px;
        }
        .news-list .news-item {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .news-list .news-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: .85rem;
            flex-shrink: 0;
        }
        .news-list .news-content {
            flex: 1;
        }
        .news-list .news-title {
            font-weight: 500;
            color: var(--text);
            font-size: .95rem;
            line-height: 1.45;
            display: block;
            transition: var(--transition);
        }
        .news-list .news-title:hover {
            color: var(--primary);
        }
        .news-list .news-meta {
            font-size: .78rem;
            color: var(--text-muted);
            margin-top: 2px;
        }
        .news-sidebar {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 24px;
            border: 1px solid var(--border);
        }
        .news-sidebar h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--primary);
            display: inline-block;
        }
        .news-sidebar .topic-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .news-sidebar .topic-list li {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 0;
            border-bottom: 1px dashed var(--border);
            transition: var(--transition);
        }
        .news-sidebar .topic-list li:last-child {
            border-bottom: none;
        }
        .news-sidebar .topic-list a {
            color: var(--text);
            font-size: .9rem;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
        }
        .news-sidebar .topic-list a:hover {
            color: var(--primary);
        }
        .news-sidebar .topic-list .count {
            font-size: .78rem;
            color: var(--text-muted);
            background: var(--white);
            padding: 2px 10px;
            border-radius: 20px;
            border: 1px solid var(--border);
        }

        /* 使用指南 */
        .guide-section {
            background: var(--bg);
        }
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
            gap: 24px;
        }
        .guide-item {
            background: var(--white);
            border-radius: var(--radius);
            padding: 28px 24px;
            border: 1px solid var(--border);
            transition: var(--transition);
            position: relative;
        }
        .guide-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .guide-item .step-num {
            position: absolute;
            top: 20px;
            right: 20px;
            font-size: 2rem;
            font-weight: 800;
            color: rgba(26, 111, 181, .08);
            line-height: 1;
        }
        .guide-item .icon-wrap {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            margin-bottom: 16px;
        }
        .guide-item h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }
        .guide-item p {
            font-size: .86rem;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* 热门排行 */
        .rank-section {
            background: var(--white);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .rank-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            background: var(--white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }
        .rank-table thead th {
            background: var(--primary-light);
            color: var(--primary-dark);
            font-weight: 600;
            font-size: .88rem;
            padding: 14px 18px;
            text-align: left;
            border-bottom: 1px solid rgba(26, 111, 181, .1);
        }
        .rank-table tbody td {
            padding: 14px 18px;
            font-size: .92rem;
            color: var(--text);
            border-bottom: 1px solid #f1f5f9;
        }
        .rank-table tbody tr:last-child td {
            border-bottom: none;
        }
        .rank-table tbody tr {
            transition: var(--transition);
        }
        .rank-table tbody tr:hover {
            background: rgba(26, 111, 181, .02);
        }
        .rank-num {
            font-weight: 800;
            font-size: 1rem;
            color: var(--primary);
            width: 48px;
        }
        .rank-hot {
            display: inline-block;
            background: var(--secondary-light);
            color: var(--secondary);
            font-size: .8rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 20px;
        }
        .rank-read {
            color: var(--text-light);
            font-size: .86rem;
        }

        /* 收藏分享 */
        .share-section {
            background: linear-gradient(135deg, var(--primary-light), #f0f6fc);
            padding: 70px 0;
        }
        .share-content {
            display: flex;
            align-items: center;
            gap: 48px;
            flex-wrap: wrap;
        }
        .share-text {
            flex: 1;
            min-width: 280px;
        }
        .share-text .section-title {
            margin-bottom: 16px;
        }
        .share-text .section-desc {
            margin-bottom: 24px;
        }
        .share-features {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            margin-top: 20px;
        }
        .share-feature {
            background: var(--white);
            border-radius: var(--radius-sm);
            padding: 16px 20px;
            box-shadow: var(--shadow-sm);
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: .9rem;
            font-weight: 500;
            color: var(--text);
            border: 1px solid rgba(26, 111, 181, .06);
            transition: var(--transition);
        }
        .share-feature:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow);
        }
        .share-feature i {
            color: var(--primary);
            font-size: 1.2rem;
        }
        .share-visual {
            flex: 1;
            min-width: 280px;
        }
        .share-visual-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-lg);
            border: 1px solid rgba(26, 111, 181, .06);
            text-align: center;
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .share-visual-card::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(255, 255, 255, .88);
            border-radius: var(--radius-lg);
        }
        .share-visual-inner {
            position: relative;
            z-index: 1;
        }
        .share-visual-inner .big-icon {
            font-size: 3rem;
            color: var(--primary);
            margin-bottom: 14px;
            background: var(--primary-light);
            width: 80px;
            height: 80px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-left: auto;
            margin-right: auto;
        }
        .share-visual-inner h4 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }
        .share-visual-inner p {
            color: var(--text-light);
            font-size: .9rem;
            margin-bottom: 0;
        }

        /* FAQ */
        .faq-section {
            background: var(--bg);
        }
        .faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(26, 111, 181, .2);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-weight: 600;
            color: var(--dark);
            cursor: pointer;
            font-size: .98rem;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question i {
            color: var(--primary);
            font-size: .95rem;
            transition: var(--transition);
            flex-shrink: 0;
            margin-left: 12px;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-light);
            font-size: .92rem;
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }

        /* CTA */
        .cta-section {
            background: url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
            position: relative;
            padding: 90px 0;
            text-align: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 111, 181, .92), rgba(20, 90, 148, .85));
        }
        .cta-inner {
            position: relative;
            z-index: 1;
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-inner h2 {
            color: #fff;
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 14px;
            letter-spacing: -.02em;
        }
        .cta-inner p {
            color: rgba(255, 255, 255, .9);
            font-size: 1.05rem;
            margin-bottom: 30px;
            line-height: 1.7;
        }
        .cta-inner .btn-custom-primary {
            background: #fff;
            border-color: #fff;
            color: var(--primary-dark);
        }
        .cta-inner .btn-custom-primary:hover {
            background: var(--primary-light);
            border-color: var(--primary-light);
            transform: translateY(-2px);
        }
        .cta-inner .btn-custom-outline {
            border-color: rgba(255, 255, 255, .8);
            color: #fff;
        }
        .cta-inner .btn-custom-outline:hover {
            background: rgba(255, 255, 255, .1);
            border-color: #fff;
            color: #fff;
        }

        /* Footer */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, .7);
            padding: 60px 0 30px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-brand i {
            color: var(--primary);
            background: rgba(255, 255, 255, .1);
            width: 36px;
            height: 36px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .footer-desc {
            font-size: .9rem;
            line-height: 1.7;
            margin-bottom: 20px;
            max-width: 360px;
            color: rgba(255, 255, 255, .6);
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, .6);
            font-size: .9rem;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding-top: 24px;
            margin-top: 40px;
            text-align: center;
            font-size: .84rem;
            color: rgba(255, 255, 255, .45);
        }
        .footer-copy {
            color: rgba(255, 255, 255, .5);
        }

        /* 底部固定转化条 */
        .sticky-cta {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, .96);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-top: 1px solid var(--border);
            z-index: 999;
            padding: 10px 0;
            box-shadow: 0 -4px 20px rgba(0, 0, 0, .06);
            transform: translateY(0);
            transition: transform .3s ease;
        }
        .sticky-cta.hidden {
            transform: translateY(100%);
        }
        .sticky-cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }
        .sticky-cta-text {
            font-size: .95rem;
            font-weight: 600;
            color: var(--dark);
        }
        .sticky-cta-text i {
            color: var(--secondary);
            margin-right: 6px;
        }
        .sticky-cta .btn-custom {
            padding: 8px 20px;
            font-size: .88rem;
        }
        .sticky-cta .btn-close-custom {
            background: none;
            border: none;
            color: var(--text-muted);
            font-size: 1rem;
            cursor: pointer;
            padding: 4px;
            transition: var(--transition);
        }
        .sticky-cta .btn-close-custom:hover {
            color: var(--text);
        }

        body {
            padding-bottom: 64px;
        }

        /* 响应式 */
        @media (max-width: 992px) {
            .hero-section {
                padding: 60px 0 50px;
            }
            .hero-title {
                font-size: 2rem;
            }
            .whitepaper-card {
                margin: 32px auto 0;
            }
            .section-padding {
                padding: 64px 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .header-search {
                display: none;
            }
            .navbar-collapse {
                background: var(--white);
                border-radius: 16px;
                padding: 16px;
                box-shadow: var(--shadow-lg);
                border: 1px solid var(--border);
                margin-top: 12px;
            }
            .navbar-collapse .nav-link {
                padding: 10px 16px !important;
            }
            .header-cta {
                margin-top: 12px;
                display: flex;
                gap: 8px;
            }
        }
        @media (max-width: 768px) {
            .hero-stats {
                gap: 20px;
            }
            .hero-stat-item .num {
                font-size: 1.2rem;
            }
            .hero-cta-group .btn-custom {
                width: 100%;
                justify-content: center;
            }
            .guide-grid {
                grid-template-columns: 1fr 1fr;
            }
            .share-content {
                flex-direction: column;
                gap: 28px;
            }
            .share-text {
                flex: none;
                width: 100%;
            }
            .share-visual {
                flex: none;
                width: 100%;
            }
            .rank-table {
                font-size: .85rem;
            }
            .rank-table thead th,
            .rank-table tbody td {
                padding: 10px 12px;
            }
            .sticky-cta-text {
                font-size: .82rem;
            }
        }
        @media (max-width: 520px) {
            .container-custom {
                padding: 0 16px;
            }
            .hero-title {
                font-size: 1.55rem;
            }
            .hero-desc {
                font-size: .95rem;
            }
            .section-padding {
                padding: 50px 0;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .guide-grid {
                grid-template-columns: 1fr;
            }
            .directory-card {
                padding: 20px;
            }
            .footer-brand {
                font-size: 1rem;
            }
            .sticky-cta-inner {
                justify-content: center;
                text-align: center;
            }
            .sticky-cta .btn-custom {
                width: 100%;
                justify-content: center;
            }
            .news-list .news-icon {
                display: none;
            }
            .news-list .news-title {
                font-size: .9rem;
            }
        }