/* roulang page: index */
:root {
            --primary: #1A6DF5;
            --primary-dark: #1358C9;
            --primary-light: #4A90F5;
            --primary-soft: #EEF4FD;
            --accent: #0FA958;
            --accent-light: #E8F7EE;
            --text-main: #1A2233;
            --text-secondary: #5B6472;
            --text-body: #3A4453;
            --border-color: #DCE3EE;
            --bg-soft: #F4F8FC;
            --bg-white: #FFFFFF;
            --shadow-sm: 0 2px 8px rgba(26, 35, 50, 0.06);
            --shadow-md: 0 6px 20px rgba(26, 35, 50, 0.08);
            --shadow-lg: 0 12px 32px rgba(26, 109, 245, 0.10);
            --radius-card: 14px;
            --radius-btn: 7px;
            --radius-tag: 20px;
            --radius-input: 6px;
            --font-cn: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-num: "Inter", "Roboto", sans-serif;
            --section-padding: 84px 0;
            --section-padding-mobile: 52px 0;
            --transition: all 0.2s ease;
        }

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

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

        body {
            font-family: var(--font-cn);
            font-size: 15px;
            line-height: 1.85;
            color: var(--text-body);
            background-color: var(--bg-white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        button,
        input,
        select,
        textarea {
            font-family: var(--font-cn);
            font-size: 15px;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-main);
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 12px;
        }

        h1 {
            font-size: 36px;
            letter-spacing: 0.5px;
            line-height: 1.25;
        }

        h2 {
            font-size: 29px;
            line-height: 1.3;
        }

        h3 {
            font-size: 21px;
            font-weight: 600;
            line-height: 1.4;
        }

        p {
            margin-bottom: 12px;
        }

        .container {
            max-width: 1180px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* 导航 */
        .top-nav {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: #FFFFFF;
            height: 62px;
            display: flex;
            align-items: center;
            box-shadow: 0 1px 0 rgba(0, 0, 0, 0.04);
            transition: box-shadow 0.25s ease;
        }

        .top-nav.scrolled {
            box-shadow: 0 6px 20px rgba(26, 35, 50, 0.08);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: 1180px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .nav-brand {
            display: flex;
            align-items: center;
            gap: 9px;
            font-weight: 700;
            font-size: 18px;
            color: var(--text-main);
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        .nav-brand .brand-icon {
            width: 30px;
            height: 30px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 7px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 15px;
            font-weight: 800;
            flex-shrink: 0;
        }

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

        .nav-links li a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 6px;
            transition: var(--transition);
            white-space: nowrap;
            position: relative;
        }

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

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

        .nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--primary);
            border-radius: 1px;
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .nav-search {
            position: relative;
            display: flex;
            align-items: center;
        }

        .nav-search input {
            width: 175px;
            padding: 9px 16px 9px 36px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-input);
            font-size: 13px;
            outline: none;
            transition: var(--transition);
            background: #FAFBFD;
            color: var(--text-main);
        }

        .nav-search input:focus {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(26, 109, 245, 0.10);
            width: 210px;
        }

        .nav-search .search-icon {
            position: absolute;
            left: 12px;
            color: var(--text-secondary);
            font-size: 13px;
            pointer-events: none;
        }

        .nav-search .kbd-hint {
            position: absolute;
            right: 10px;
            font-size: 11px;
            color: var(--text-secondary);
            background: #F0F3F8;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            padding: 1px 6px;
            pointer-events: none;
            font-weight: 500;
        }

        .nav-btn {
            padding: 9px 20px;
            background: var(--primary);
            color: #fff !important;
            border: none;
            border-radius: var(--radius-btn);
            font-size: 13px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
            letter-spacing: 0.2px;
        }

        .nav-btn:hover {
            background: var(--primary-dark);
            box-shadow: 0 4px 12px rgba(26, 109, 245, 0.25);
            transform: translateY(-1px);
        }

        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text-main);
            cursor: pointer;
            padding: 6px;
            border-radius: 6px;
        }

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

        .mobile-menu {
            display: none;
            position: fixed;
            top: 62px;
            left: 0;
            right: 0;
            bottom: 0;
            background: #fff;
            z-index: 999;
            padding: 24px;
            overflow-y: auto;
            box-shadow: 0 12px 32px rgba(26, 35, 50, 0.10);
        }

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

        .mobile-menu .search-mobile {
            margin-bottom: 18px;
        }

        .mobile-menu .search-mobile input {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-input);
            font-size: 14px;
            outline: none;
        }

        .mobile-menu ul {
            list-style: none;
            padding: 0;
            margin: 0 0 18px 0;
        }

        .mobile-menu ul li a {
            display: block;
            padding: 14px 8px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-main);
            border-bottom: 1px solid #F0F3F8;
            transition: var(--transition);
        }

        .mobile-menu ul li a:hover,
        .mobile-menu ul li a.active {
            color: var(--primary);
            background: var(--primary-soft);
            border-radius: 6px;
        }

        /* Hero */
        .hero {
            position: relative;
            background: linear-gradient(160deg, #F4F8FC 0%, #EEF4FD 55%, #E3EDFC 100%);
            padding: 64px 0 56px;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(26, 109, 245, 0.07) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -60px;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(15, 169, 88, 0.05) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
        }

        .hero-left {
            flex: 1 1 540px;
            max-width: 620px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-tag);
            padding: 5px 16px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 18px;
            box-shadow: var(--shadow-sm);
        }

        .hero-badge .live-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--accent);
            animation: blink 1.6s ease-in-out infinite;
        }

        @keyframes blink {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.35;
            }
        }

        .hero h1 {
            font-size: 34px;
            margin-bottom: 14px;
            color: var(--text-main);
        }

        .hero-subtitle {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.9;
            margin-bottom: 24px;
            max-width: 560px;
        }

        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 22px;
        }

        .btn-primary-custom {
            padding: 13px 28px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            letter-spacing: 0.2px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 14px rgba(26, 109, 245, 0.22);
        }

        .btn-primary-custom:hover {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            box-shadow: 0 6px 20px rgba(26, 109, 245, 0.32);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-outline-custom {
            padding: 13px 26px;
            background: var(--bg-white);
            color: var(--primary);
            border: 1.5px solid var(--primary);
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            letter-spacing: 0.2px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-outline-custom:hover {
            background: var(--primary-soft);
            border-color: var(--primary-dark);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }

        .hero-countdown {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .countdown-item {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 10px;
            padding: 8px 14px;
            text-align: center;
            min-width: 58px;
            box-shadow: var(--shadow-sm);
        }

        .countdown-num {
            font-family: var(--font-num);
            font-size: 22px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }

        .countdown-label {
            font-size: 11px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        .countdown-sep {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-secondary);
        }

        .hero-right {
            flex: 0 0 330px;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .hero-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            padding: 22px 24px;
            box-shadow: var(--shadow-md);
            border: 1px solid rgba(220, 227, 238, 0.6);
        }

        .hero-card .card-label {
            font-size: 12px;
            font-weight: 600;
            color: var(--text-secondary);
            text-transform: uppercase;
            letter-spacing: 0.6px;
            margin-bottom: 8px;
        }

        .hero-card .match-name {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 4px;
        }

        .hero-card .match-detail {
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 12px;
        }

        .hero-card .match-score {
            font-family: var(--font-num);
            font-size: 30px;
            font-weight: 800;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 12px;
        }

        .hero-card .match-score .vs {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
            font-family: var(--font-cn);
        }

        .hero-card .match-status {
            display: inline-block;
            background: var(--accent-light);
            color: var(--accent);
            font-size: 12px;
            font-weight: 600;
            border-radius: 20px;
            padding: 3px 12px;
        }

        .hero-mini-stats {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .hero-mini-stat {
            background: var(--bg-white);
            border-radius: 10px;
            padding: 12px 18px;
            text-align: center;
            flex: 1;
            min-width: 90px;
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(220, 227, 238, 0.5);
        }

        .hero-mini-stat .stat-num {
            font-family: var(--font-num);
            font-size: 22px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.3;
        }

        .hero-mini-stat .stat-label {
            font-size: 12px;
            color: var(--text-secondary);
        }

        /* 通用 section */
        .section-block {
            padding: var(--section-padding);
            position: relative;
        }

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

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

        .section-header {
            margin-bottom: 38px;
            max-width: 720px;
        }

        .section-header .section-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-soft);
            border-radius: 20px;
            padding: 4px 14px;
            margin-bottom: 10px;
            letter-spacing: 0.4px;
        }

        .section-header h2 {
            margin-bottom: 10px;
            font-size: 28px;
        }

        .section-header p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.9;
            margin-bottom: 0;
        }

        /* 指标看板 */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 12px;
        }

        .metric-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            padding: 26px 24px;
            box-shadow: var(--shadow-sm);
            border-top: 4px solid var(--primary);
            transition: var(--transition);
            text-align: left;
        }

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

        .metric-card .metric-icon {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: var(--primary-soft);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            margin-bottom: 14px;
        }

        .metric-card .metric-num {
            font-family: var(--font-num);
            font-size: 32px;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .metric-card .metric-label {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* 品牌介绍 */
        .brand-about {
            display: flex;
            align-items: center;
            gap: 40px;
            flex-wrap: wrap;
        }

        .brand-about .brand-text {
            flex: 1 1 520px;
        }

        .brand-about .brand-text p {
            font-size: 15px;
            line-height: 2.0;
            color: var(--text-body);
            margin-bottom: 14px;
        }

        .brand-about .brand-image {
            flex: 0 0 340px;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }

        .brand-about .brand-image img {
            width: 100%;
            height: 260px;
            object-fit: cover;
            transition: transform 0.35s ease;
        }

        .brand-about .brand-image:hover img {
            transform: scale(1.03);
        }

        /* 服务矩阵 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }

        .service-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            padding: 26px 22px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid rgba(220, 227, 238, 0.5);
        }

        .service-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: rgba(26, 109, 245, 0.2);
        }

        .service-card .service-icon {
            width: 46px;
            height: 46px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary-soft), #DCE8FB);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 16px;
        }

        .service-card h3 {
            font-size: 18px;
            margin-bottom: 8px;
            color: var(--text-main);
        }

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

        /* 结果对比 */
        .comparison-wrap {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(220, 227, 238, 0.5);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
        }

        .comparison-table th,
        .comparison-table td {
            padding: 16px 22px;
            text-align: left;
            font-size: 14px;
            border-bottom: 1px solid #F0F3F8;
        }

        .comparison-table th {
            background: var(--primary-soft);
            color: var(--text-main);
            font-weight: 700;
            font-size: 15px;
            border-bottom: 2px solid var(--border-color);
        }

        .comparison-table td {
            color: var(--text-body);
        }

        .comparison-table tr:last-child td {
            border-bottom: none;
        }

        .comparison-table .highlight-col {
            color: var(--primary);
            font-weight: 600;
        }

        .comparison-table .improve-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            background: var(--accent-light);
            color: var(--accent);
            border-radius: 20px;
            padding: 2px 10px;
            margin-left: 8px;
        }

        /* 里程碑 */
        .timeline {
            position: relative;
            padding-left: 0;
            list-style: none;
            margin: 0;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 18px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--border-color);
        }

        .timeline-item {
            position: relative;
            padding-left: 52px;
            padding-bottom: 32px;
        }

        .timeline-item:last-child {
            padding-bottom: 0;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: 12px;
            top: 6px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--primary);
            border: 3px solid var(--bg-white);
            box-shadow: 0 0 0 3px var(--primary-soft);
        }

        .timeline-item .timeline-year {
            font-family: var(--font-num);
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 4px;
        }

        .timeline-item h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-main);
        }

        .timeline-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 0;
        }

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

        .news-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid rgba(220, 227, 238, 0.5);
            display: flex;
            flex-direction: column;
        }

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

        .news-card .news-thumb {
            height: 170px;
            overflow: hidden;
            background: var(--primary-soft);
            position: relative;
        }

        .news-card .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s ease;
        }

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

        .news-card .news-date {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(255, 255, 255, 0.95);
            border-radius: 20px;
            padding: 3px 12px;
            font-size: 12px;
            font-weight: 600;
            color: var(--text-main);
            box-shadow: var(--shadow-sm);
        }

        .news-card .news-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .news-card .news-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.5;
        }

        .news-card .news-excerpt {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 12px;
            flex: 1;
        }

        .news-card .news-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

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

        /* 平台保障 */
        .assurance-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .assurance-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid rgba(220, 227, 238, 0.5);
        }

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

        .assurance-card .assurance-icon {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--primary-soft);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin: 0 auto 14px;
        }

        .assurance-card h3 {
            font-size: 16px;
            margin-bottom: 6px;
        }

        .assurance-card p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 0;
        }

        /* FAQ */
        .accordion-custom .accordion-item {
            border: 1px solid var(--border-color);
            border-radius: 10px !important;
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: none;
            background: var(--bg-white);
        }

        .accordion-custom .accordion-button {
            background: var(--bg-white);
            color: var(--text-main);
            font-weight: 600;
            font-size: 15px;
            padding: 16px 20px;
            box-shadow: none;
            border: none;
            border-radius: 0 !important;
            transition: var(--transition);
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            background: var(--primary-soft);
            color: var(--primary);
            box-shadow: none;
        }

        .accordion-custom .accordion-button:focus {
            box-shadow: none;
            border-color: transparent;
            outline: 3px solid rgba(26, 109, 245, 0.15);
        }

        .accordion-custom .accordion-button::after {
            background-image: none;
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 13px;
            color: inherit;
            transition: transform 0.25s ease;
        }

        .accordion-custom .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
        }

        .accordion-custom .accordion-body {
            padding: 16px 20px 18px;
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.9;
            background: var(--bg-white);
        }

        /* 用户评价 */
        .review-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .review-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            padding: 22px 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(220, 227, 238, 0.5);
            transition: var(--transition);
        }

        .review-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }

        .review-card .quote-icon {
            color: var(--primary);
            font-size: 24px;
            margin-bottom: 10px;
            opacity: 0.6;
        }

        .review-card .review-text {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 14px;
        }

        .review-card .review-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .review-card .review-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-soft), #DCE8FB);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 15px;
            flex-shrink: 0;
        }

        .review-card .review-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
        }

        .review-card .review-source {
            font-size: 12px;
            color: var(--text-secondary);
        }

        /* 转化表单 */
        .cta-form-wrap {
            background: linear-gradient(150deg, #F4F8FC 0%, #EEF4FD 100%);
            border-radius: 18px;
            padding: 42px 38px;
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(220, 227, 238, 0.6);
        }

        .cta-form-wrap .form-control-custom {
            width: 100%;
            padding: 11px 16px;
            border: 1px solid #D5DEEB;
            border-radius: var(--radius-input);
            font-size: 14px;
            outline: none;
            transition: var(--transition);
            background: #fff;
            color: var(--text-main);
        }

        .cta-form-wrap .form-control-custom:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 109, 245, 0.10);
            background: #fff;
        }

        .cta-form-wrap .form-label-custom {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 5px;
            display: block;
        }

        .cta-form-wrap .form-group {
            margin-bottom: 16px;
        }

        /* 底部转化横幅 */
        .bottom-cta {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: 16px;
            padding: 38px 36px;
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 20px;
            box-shadow: 0 8px 28px rgba(26, 109, 245, 0.25);
        }

        .bottom-cta h2 {
            color: #fff;
            font-size: 24px;
            margin-bottom: 4px;
        }

        .bottom-cta p {
            color: rgba(255, 255, 255, 0.88);
            margin-bottom: 0;
            font-size: 15px;
        }

        .bottom-cta .btn-white {
            padding: 13px 30px;
            background: #fff;
            color: var(--primary);
            border: none;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }

        .bottom-cta .btn-white:hover {
            background: #F0F3F8;
            box-shadow: 0 6px 18px rgba(0, 0, 0, 0.15);
            transform: translateY(-2px);
        }

        /* 页脚 */
        .site-footer {
            background: #EEF4FD;
            border-top: 1px solid var(--border-color);
            padding: 52px 0 30px;
            font-size: 13px;
            color: var(--text-secondary);
        }

        .footer-top {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            margin-bottom: 30px;
        }

        .footer-brand {
            flex: 1 1 260px;
        }

        .footer-brand .brand-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 17px;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .footer-brand p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 0;
            max-width: 280px;
        }

        .footer-links {
            display: flex;
            gap: 48px;
            flex-wrap: wrap;
            flex: 1 1 480px;
            justify-content: flex-end;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
        }

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

        .footer-col ul li {
            margin-bottom: 6px;
        }

        .footer-col ul li a {
            font-size: 13px;
            color: var(--text-secondary);
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            font-size: 12px;
            color: var(--text-secondary);
        }

        .footer-bottom .footer-info-links {
            display: flex;
            gap: 10px;
            align-items: center;
            flex-wrap: wrap;
        }

        .footer-bottom a {
            color: var(--text-secondary);
            font-size: 12px;
        }

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

        .footer-bottom .sep {
            color: var(--border-color);
        }

        /* 响应式 */
        @media (max-width: 992px) {
            .nav-links {
                display: none;
            }
            .nav-search {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .hero-inner {
                flex-direction: column;
                gap: 28px;
            }
            .hero-right {
                flex: 1 1 100%;
                width: 100%;
            }
            .hero {
                padding: 48px 0 40px;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .assurance-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .review-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .brand-about {
                flex-direction: column;
                gap: 24px;
            }
            .brand-about .brand-image {
                flex: 0 0 auto;
                width: 100%;
            }
            .section-block {
                padding: 56px 0 44px;
            }
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }
            h1 {
                font-size: 28px;
            }
            h2 {
                font-size: 24px;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .hero h1 {
                font-size: 28px;
            }
        }

        @media (max-width: 768px) {
            .metrics-grid {
                gap: 14px;
            }
            .metric-card {
                padding: 18px 16px;
            }
            .metric-card .metric-num {
                font-size: 24px;
            }
            .service-grid {
                gap: 14px;
            }
            .service-card {
                padding: 20px 16px;
            }
            .comparison-table th,
            .comparison-table td {
                padding: 10px 12px;
                font-size: 12px;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .cta-form-wrap {
                padding: 28px 20px;
            }
            .bottom-cta {
                flex-direction: column;
                text-align: center;
                padding: 28px 20px;
            }
            .footer-links {
                flex-direction: column;
                gap: 20px;
                justify-content: flex-start;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .hero-countdown {
                gap: 8px;
            }
            .countdown-item {
                min-width: 48px;
                padding: 6px 10px;
            }
            .countdown-num {
                font-size: 18px;
            }
        }

        @media (max-width: 576px) {
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .metric-card {
                padding: 16px 12px;
                border-top-width: 3px;
            }
            .metric-card .metric-num {
                font-size: 20px;
            }
            .metric-card .metric-label {
                font-size: 12px;
            }
            .service-grid {
                grid-template-columns: 1fr;
            }
            .assurance-grid {
                grid-template-columns: 1fr;
            }
            .review-grid {
                grid-template-columns: 1fr;
            }
            .section-block {
                padding: 44px 0 36px;
            }
            .section-header {
                margin-bottom: 24px;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .hero {
                padding: 36px 0 32px;
            }
            .hero h1 {
                font-size: 24px;
            }
            .hero-subtitle {
                font-size: 14px;
            }
            .hero-cta-group {
                flex-direction: column;
            }
            .btn-primary-custom,
            .btn-outline-custom {
                width: 100%;
                justify-content: center;
            }
            .nav-inner {
                padding: 0 16px;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .timeline-item {
                padding-left: 42px;
            }
            .timeline::before {
                left: 14px;
            }
            .timeline-item::before {
                left: 8px;
                width: 12px;
                height: 12px;
            }
            .nav-btn {
                padding: 8px 14px;
                font-size: 12px;
            }
        }

        @media (max-width: 380px) {
            .metrics-grid {
                grid-template-columns: 1fr;
            }
            .countdown-item {
                min-width: 42px;
                padding: 5px 8px;
            }
            .countdown-num {
                font-size: 16px;
            }
        }

/* roulang page: category2 */
:root {
 --primary: #1A6DF5;
 --primary-dark: #1358C9;
 --primary-light: #4A90F5;
 --primary-soft: #EEF4FD;
 --accent: #0FA958;
 --accent-light: #E8F7EE;
 --text-main: #1A2233;
 --text-secondary: #5B6472;
 --text-body: #3A4453;
 --border-color: #DCE3EE;
 --bg-soft: #F4F8FC;
 --bg-white: #FFFFFF;
 --shadow-sm: 0 2px 8px rgba(26,35,50,0.06);
 --shadow-md: 0 6px 20px rgba(26,35,50,0.08);
 --shadow-lg: 0 12px 32px rgba(26,109,245,0.10);
 --radius-card: 14px;
 --radius-btn: 7px;
 --radius-tag: 20px;
 --radius-input: 6px;
 --font-cn: -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
 --font-num: "Inter","Roboto",sans-serif;
 --section-padding: 84px 0;
 --section-padding-mobile: 52px 0;
 --transition: all 0.2s ease;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font-cn);font-size:15px;line-height:1.85;color:var(--text-body);background:#fff;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
a{color:var(--primary);text-decoration:none;transition:var(--transition)}
a:hover{color:var(--primary-dark);text-decoration:none}
img{max-width:100%;height:auto;display:block}
button,input,select,textarea{font-family:var(--font-cn);font-size:15px}
.container{max-width:1180px;padding-left:24px;padding-right:24px}
.top-nav{position:sticky;top:0;z-index:1000;background:#fff;height:62px;display:flex;align-items:center;box-shadow:0 1px 0 rgba(0,0,0,0.04);transition:box-shadow .25s ease}
.top-nav.scrolled{box-shadow:0 6px 20px rgba(26,35,50,0.08)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;width:100%;max-width:1180px;margin:0 auto;padding:0 24px}
.nav-brand{display:flex;align-items:center;gap:9px;font-weight:700;font-size:18px;color:var(--text-main);letter-spacing:.3px;white-space:nowrap}
.nav-brand .brand-icon{width:30px;height:30px;background:linear-gradient(135deg,var(--primary),var(--primary-light));border-radius:7px;display:inline-flex;align-items:center;justify-content:center;color:#fff;font-size:14px;font-weight:800;flex-shrink:0}
.nav-links{display:flex;align-items:center;gap:4px;list-style:none;margin:0;padding:0}
.nav-links li a{display:inline-block;padding:8px 14px;font-size:14px;font-weight:500;color:var(--text-secondary);border-radius:6px;transition:var(--transition);white-space:nowrap;position:relative}
.nav-links li a:hover{color:var(--primary);background:var(--primary-soft)}
.nav-links li a.active{color:var(--primary);font-weight:600}
.nav-links li a.active::after{content:'';position:absolute;bottom:2px;left:14px;right:14px;height:2px;background:var(--primary);border-radius:1px}
.nav-right{display:flex;align-items:center;gap:10px}
.nav-search{position:relative;display:flex;align-items:center}
.nav-search input{width:175px;padding:9px 16px 9px 36px;border:1px solid var(--border-color);border-radius:var(--radius-input);font-size:13px;outline:none;transition:var(--transition);background:#FAFBFD;color:var(--text-main)}
.nav-search input:focus{border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px rgba(26,109,245,0.10);width:210px}
.nav-search .search-icon{position:absolute;left:12px;color:var(--text-secondary);font-size:13px;pointer-events:none}
.nav-search .kbd-hint{position:absolute;right:10px;font-size:11px;color:var(--text-secondary);background:#F0F3F8;border:1px solid var(--border-color);border-radius:4px;padding:1px 6px;pointer-events:none;font-weight:500}
.nav-btn{padding:9px 20px;background:var(--primary);color:#fff;border:none;border-radius:var(--radius-btn);font-weight:600;font-size:14px;cursor:pointer;transition:var(--transition);white-space:nowrap}
.nav-btn:hover{background:var(--primary-dark);box-shadow:0 6px 16px rgba(26,109,245,0.25);transform:translateY(-1px)}
.hamburger{display:none;background:none;border:none;font-size:20px;color:var(--text-main);cursor:pointer;padding:8px}
.mobile-menu{display:none;position:fixed;top:62px;left:0;right:0;background:#fff;box-shadow:0 12px 28px rgba(26,35,50,0.12);padding:20px 24px;z-index:999;flex-direction:column;gap:12px}
.mobile-menu ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px}
.mobile-menu ul li a{display:block;padding:10px 14px;font-size:15px;color:var(--text-secondary);border-radius:8px}
.mobile-menu ul li a.active{color:var(--primary);background:var(--primary-soft);font-weight:600}
.mobile-menu .search-mobile input{width:100%;padding:11px 16px;border:1px solid var(--border-color);border-radius:var(--radius-input);font-size:14px;outline:none}
.breadcrumb-section{padding:24px 0 0;background:#fff}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-secondary);margin:0;padding:0;list-style:none;background:transparent}
.breadcrumb .breadcrumb-item,.breadcrumb li{color:var(--text-secondary)}
.breadcrumb a{color:var(--text-secondary);transition:var(--transition)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .breadcrumb-item.active,.breadcrumb li.active{color:var(--text-main);font-weight:500}
.breadcrumb .separator{color:#B9C2CF;font-size:12px}
.category-header{padding:28px 0 48px;background:#fff}
.category-header h1{font-size:34px;font-weight:700;color:var(--text-main);margin:0 0 14px;letter-spacing:.5px;line-height:1.3}
.category-header .cat-desc{font-size:16px;color:var(--text-secondary);max-width:760px;line-height:1.8;margin:0}
.list-section{padding:48px 0 72px;background:var(--bg-soft)}
.section-heading{display:flex;align-items:flex-end;justify-content:space-between;flex-wrap:wrap;gap:16px;margin-bottom:36px}
.section-heading h2{font-size:26px;font-weight:700;color:var(--text-main);margin:0;letter-spacing:.3px}
.section-heading .heading-note{font-size:14px;color:var(--text-secondary)}
.team-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.team-card{background:#fff;border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-sm);transition:var(--transition);display:flex;flex-direction:column}
.team-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.team-card .card-img{position:relative;aspect-ratio:16/9;overflow:hidden;background:#E8EDF5}
.team-card .card-img img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.team-card:hover .card-img img{transform:scale(1.04)}
.team-card .card-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.team-card .card-meta{display:flex;align-items:center;gap:10px;font-size:12px;color:#8A94A5}
.team-card .card-meta .tag-badge{background:var(--primary-soft);color:var(--primary);padding:3px 10px;border-radius:var(--radius-tag);font-weight:500;font-size:12px}
.team-card .card-title{font-size:18px;font-weight:600;color:var(--text-main);margin:0;line-height:1.5}
.team-card .card-summary{font-size:14px;color:var(--text-secondary);margin:0;line-height:1.75;flex:1}
.team-card .card-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:var(--primary);transition:var(--transition)}
.team-card .card-link:hover{color:var(--primary-dark);gap:9px}
.more-link{display:inline-flex;align-items:center;gap:8px;padding:10px 22px;border:1px solid var(--primary);border-radius:var(--radius-btn);color:var(--primary);font-weight:600;font-size:14px;transition:var(--transition);background:#fff}
.more-link:hover{background:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(26,109,245,0.2)}
.data-summary-section{padding:72px 0;background:#fff}
.data-summary-card{background:var(--bg-soft);border-radius:var(--radius-card);padding:36px 40px;display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center}
.data-summary-card .summary-text{font-size:15px;color:var(--text-body);line-height:1.9}
.data-summary-card .summary-text strong{color:var(--text-main)}
.mini-stats{display:flex;gap:20px;flex-wrap:wrap}
.mini-stat{background:#fff;border-radius:12px;padding:18px 22px;box-shadow:var(--shadow-sm);flex:1;min-width:120px;text-align:center}
.mini-stat .stat-num{font-family:var(--font-num);font-size:28px;font-weight:800;color:var(--primary)}
.mini-stat .stat-label{font-size:13px;color:var(--text-secondary);margin-top:4px}
.filter-section{padding:48px 0;background:#fff;border-top:1px solid #F0F3F8;border-bottom:1px solid #F0F3F8}
.filter-section h3{font-size:18px;font-weight:600;color:var(--text-main);margin:0 0 16px}
.tag-group{display:flex;flex-wrap:wrap;gap:10px}
.tag-chip{display:inline-flex;align-items:center;padding:8px 18px;border-radius:var(--radius-tag);background:var(--bg-soft);color:var(--text-secondary);font-size:13px;font-weight:500;cursor:pointer;transition:var(--transition);border:1px solid transparent}
.tag-chip:hover{background:var(--primary-soft);color:var(--primary);border-color:#CBDDFB}
.tag-chip.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.recommend-section{padding:72px 0;background:var(--bg-soft)}
.recommend-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.recommend-card{background:#fff;border-radius:12px;padding:22px;box-shadow:var(--shadow-sm);transition:var(--transition);display:block;color:inherit}
.recommend-card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px);color:inherit}
.recommend-card .rec-title{font-size:15px;font-weight:600;color:var(--text-main);margin:0 0 8px;line-height:1.5}
.recommend-card .rec-date{font-size:12px;color:#8A94A5}
.recommend-card .rec-arrow{display:inline-flex;align-items:center;gap:5px;font-size:13px;color:var(--primary);font-weight:500;margin-top:10px}
.subscribe-section{padding:64px 0;background:linear-gradient(135deg,#F4F8FC,#EEF4FD)}
.subscribe-box{background:#fff;border-radius:var(--radius-card);box-shadow:var(--shadow-md);padding:40px 48px;display:flex;align-items:center;gap:32px;flex-wrap:wrap}
.subscribe-box .subscribe-text{flex:1;min-width:260px}
.subscribe-box .subscribe-text h3{font-size:22px;font-weight:700;color:var(--text-main);margin:0 0 8px}
.subscribe-box .subscribe-text p{font-size:14px;color:var(--text-secondary);margin:0}
.subscribe-form{display:flex;gap:10px;flex:1;min-width:280px}
.subscribe-form input{flex:1;padding:12px 18px;border:1px solid var(--border-color);border-radius:var(--radius-input);font-size:14px;outline:none;transition:var(--transition)}
.subscribe-form input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(26,109,245,0.10)}
.subscribe-form button{padding:12px 28px;background:var(--primary);color:#fff;border:none;border-radius:var(--radius-btn);font-weight:600;font-size:14px;cursor:pointer;transition:var(--transition);white-space:nowrap}
.subscribe-form button:hover{background:var(--primary-dark);box-shadow:0 6px 16px rgba(26,109,245,0.2)}
.faq-section{padding:72px 0;background:#fff}
.faq-section .section-heading{margin-bottom:32px}
.faq-section .section-heading h2{font-size:24px}
.accordion{--bs-accordion-bg:transparent;--bs-accordion-border-color:transparent}
.accordion-item{border:1px solid var(--border-color);border-radius:12px;margin-bottom:12px;overflow:hidden;box-shadow:var(--shadow-sm);background:#fff}
.accordion-button{font-size:15px;font-weight:600;color:var(--text-main);padding:18px 22px;background:#fff;border:none;box-shadow:none;display:flex;align-items:center;gap:12px}
.accordion-button:not(.collapsed){background:var(--primary-soft);color:var(--primary);box-shadow:none}
.accordion-button::after{display:none}
.accordion-button .faq-icon{font-size:16px;color:var(--primary);flex-shrink:0;transition:transform .25s ease}
.accordion-button:not(.collapsed) .faq-icon{transform:rotate(45deg)}
.accordion-body{font-size:14px;color:var(--text-body);padding:0 22px 18px 54px;line-height:1.8}
.accordion-button:focus{box-shadow:0 0 0 3px rgba(26,109,245,0.12);border-color:var(--primary)}
.site-footer{background:var(--bg-soft);border-top:1px solid #E4EBF3;padding:56px 0 32px;margin-top:0}
.footer-top{display:flex;gap:56px;flex-wrap:wrap;margin-bottom:36px}
.footer-brand{flex:1.2;min-width:260px}
.footer-brand .brand-logo{display:flex;align-items:center;gap:9px;font-weight:700;font-size:18px;color:var(--text-main);margin-bottom:14px}
.footer-brand .brand-logo .brand-icon{width:30px;height:30px;background:linear-gradient(135deg,var(--primary),var(--primary-light));border-radius:7px;display:inline-flex;align-items:center;justify-content:center;color:#fff;font-size:14px;font-weight:800}
.footer-brand p{font-size:14px;color:var(--text-secondary);line-height:1.8;margin:0}
.footer-links{display:flex;gap:48px;flex-wrap:wrap;flex:2}
.footer-col h4{font-size:15px;font-weight:600;color:var(--text-main);margin:0 0 12px}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col ul li{margin-bottom:6px}
.footer-col ul li a{font-size:14px;color:var(--text-secondary);transition:var(--transition)}
.footer-col ul li a:hover{color:var(--primary)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;padding-top:20px;border-top:1px solid #E4EBF3;font-size:13px;color:#8A94A5}
.footer-bottom .footer-info-links{display:flex;align-items:center;flex-wrap:wrap;gap:8px}
.footer-bottom .footer-info-links a{color:#8A94A5;transition:var(--transition)}
.footer-bottom .footer-info-links a:hover{color:var(--primary)}
.footer-bottom .sep{color:#C5CDD8;margin:0 4px}
@media(max-width:1100px){
 .team-grid{grid-template-columns:repeat(2,1fr)}
 .recommend-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:991px){
 .nav-links{display:none}
 .nav-search{display:none}
 .hamburger{display:block}
 .mobile-menu{display:flex}
 .data-summary-card{grid-template-columns:1fr;padding:28px}
 .subscribe-box{padding:32px}
 .footer-top{gap:30px}
 .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media(max-width:768px){
 .team-grid{grid-template-columns:1fr}
 .recommend-grid{grid-template-columns:1fr}
 .section-heading{flex-direction:column;align-items:flex-start}
 .category-header h1{font-size:26px}
 .data-summary-card{padding:24px}
 .subscribe-box{padding:24px;flex-direction:column;align-items:stretch}
 .subscribe-form{flex-direction:column}
 .subscribe-form button{width:100%}
 .footer-links{flex-direction:column;gap:20px}
}
@media(max-width:520px){
 .nav-inner{padding:0 16px}
 .top-nav{height:56px}
 .mobile-menu{top:56px}
 .breadcrumb-section{padding-top:16px}
 .category-header{padding:20px 0 32px}
 .category-header h1{font-size:22px}
 .category-header .cat-desc{font-size:14px}
 .team-card .card-body{padding:18px}
 .data-summary-card .mini-stats{flex-direction:column;gap:10px}
 .mini-stat{min-width:90px}
 .accordion-button{font-size:14px;padding:16px}
 .accordion-body{padding:0 16px 14px 44px}
}

/* roulang page: category1 */
:root {
            --primary: #1A6DF5;
            --primary-dark: #1358C9;
            --primary-light: #4A90F5;
            --primary-soft: #EEF4FD;
            --accent: #0FA958;
            --accent-light: #E8F7EE;
            --text-main: #1A2233;
            --text-secondary: #5B6472;
            --text-body: #3A4453;
            --border-color: #DCE3EE;
            --bg-soft: #F4F8FC;
            --bg-white: #FFFFFF;
            --shadow-sm: 0 2px 8px rgba(26, 35, 50, 0.06);
            --shadow-md: 0 6px 20px rgba(26, 35, 50, 0.08);
            --shadow-lg: 0 12px 32px rgba(26, 109, 245, 0.10);
            --radius-card: 14px;
            --radius-btn: 7px;
            --radius-tag: 20px;
            --radius-input: 6px;
            --font-cn: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-num: "Inter", "Roboto", sans-serif;
            --section-padding: 84px 0;
            --section-padding-mobile: 52px 0;
            --transition: all 0.2s ease;
        }

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

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

        body {
            font-family: var(--font-cn);
            font-size: 15px;
            line-height: 1.85;
            color: var(--text-body);
            background-color: var(--bg-white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
        }

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

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

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

        button,
        input,
        select,
        textarea {
            font-family: var(--font-cn);
            font-size: 15px;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-main);
            margin: 0 0 12px;
            line-height: 1.35;
        }

        h1 {
            font-size: 36px;
            font-weight: 700;
            letter-spacing: 0.5px;
        }

        h2 {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.3;
        }

        h3 {
            font-size: 20px;
            font-weight: 600;
            line-height: 1.4;
        }

        p {
            margin: 0 0 12px;
            color: var(--text-body);
        }

        .container {
            max-width: 1180px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* 导航 */
        .top-nav {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: #FFFFFF;
            height: 62px;
            display: flex;
            align-items: center;
            box-shadow: 0 1px 0 rgba(0, 0, 0, 0.04);
            transition: box-shadow 0.25s ease;
        }

        .top-nav.scrolled {
            box-shadow: 0 6px 20px rgba(26, 35, 50, 0.08);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: 1180px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .nav-brand {
            display: flex;
            align-items: center;
            gap: 9px;
            font-weight: 700;
            font-size: 18px;
            color: var(--text-main);
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        .nav-brand .brand-icon {
            width: 30px;
            height: 30px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 7px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 15px;
            font-weight: 800;
            flex-shrink: 0;
        }

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

        .nav-links li a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 6px;
            transition: var(--transition);
            white-space: nowrap;
            position: relative;
        }

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

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

        .nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--primary);
            border-radius: 1px;
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .nav-search {
            position: relative;
            display: flex;
            align-items: center;
        }

        .nav-search input {
            width: 175px;
            padding: 9px 16px 9px 36px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-input);
            font-size: 13px;
            outline: none;
            transition: var(--transition);
            background: #FAFBFD;
            color: var(--text-main);
        }

        .nav-search input:focus {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(26, 109, 245, 0.10);
            width: 210px;
        }

        .nav-search .search-icon {
            position: absolute;
            left: 12px;
            color: var(--text-secondary);
            font-size: 13px;
            pointer-events: none;
        }

        .nav-search .kbd-hint {
            position: absolute;
            right: 10px;
            font-size: 11px;
            color: var(--text-secondary);
            background: #F0F3F8;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            padding: 1px 6px;
            pointer-events: none;
            font-weight: 500;
        }

        .nav-btn {
            padding: 9px 20px;
            background: var(--primary);
            color: #fff !important;
            border: none;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
            line-height: 1.5;
        }

        .nav-btn:hover {
            background: var(--primary-dark);
            box-shadow: 0 4px 12px rgba(26, 109, 245, 0.25);
            transform: translateY(-1px);
        }

        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 20px;
            color: var(--text-main);
            cursor: pointer;
            padding: 8px;
            border-radius: 6px;
            transition: var(--transition);
        }

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

        .mobile-menu {
            display: none;
            position: absolute;
            top: 62px;
            left: 0;
            right: 0;
            background: #fff;
            box-shadow: 0 12px 24px rgba(26, 35, 50, 0.12);
            padding: 20px 24px;
            z-index: 999;
            border-top: 1px solid var(--border-color);
        }

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

        .mobile-menu .search-mobile input {
            width: 100%;
            padding: 10px 16px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-input);
            font-size: 14px;
            outline: none;
            margin-bottom: 12px;
            background: #FAFBFD;
            color: var(--text-main);
        }

        .mobile-menu ul {
            list-style: none;
            margin: 0 0 12px;
            padding: 0;
        }

        .mobile-menu ul li a {
            display: block;
            padding: 11px 14px;
            font-size: 15px;
            color: var(--text-secondary);
            border-radius: 6px;
            transition: var(--transition);
        }

        .mobile-menu ul li a:hover,
        .mobile-menu ul li a.active {
            background: var(--primary-soft);
            color: var(--primary);
        }

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

        .custom-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-secondary);
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .custom-breadcrumb li {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .custom-breadcrumb li:not(:last-child)::after {
            content: '/';
            color: #AAB4C5;
            font-size: 12px;
            margin: 0 2px;
        }

        .custom-breadcrumb a {
            color: var(--text-secondary);
            transition: var(--transition);
        }

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

        .custom-breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* 分类页头区 */
        .category-header {
            padding: 40px 0 32px;
            background: #fff;
        }

        .category-header h1 {
            margin-bottom: 8px;
            font-size: 34px;
            letter-spacing: 0.3px;
        }

        .category-header .cat-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* 卡片列表 */
        .content-list-section {
            padding: 32px 0 64px;
            background: #fff;
        }

        .content-list-section .section-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
        }

        .content-list-section .section-head h2 {
            margin-bottom: 0;
            font-size: 22px;
        }

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

        .list-card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
            border: 1px solid #EDF1F7;
            display: flex;
            flex-direction: column;
            cursor: pointer;
        }

        .list-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: #D3E2F8;
        }

        .list-card .card-img {
            width: 100%;
            height: 160px;
            object-fit: cover;
            display: block;
            background: var(--bg-soft);
        }

        .list-card .card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .list-card .card-date {
            font-size: 12px;
            color: #8A94A6;
            margin-bottom: 8px;
            font-weight: 500;
        }

        .list-card .card-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.45;
            transition: var(--transition);
        }

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

        .list-card .card-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
            flex: 1;
        }

        .view-more-wrap {
            margin-top: 32px;
            text-align: center;
        }

        .btn-outline-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 11px 28px;
            background: #fff;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            line-height: 1.5;
        }

        .btn-outline-primary-custom:hover {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 6px 16px rgba(26, 109, 245, 0.24);
            transform: translateY(-2px);
        }

        /* 数据摘要/分类说明 */
        .data-summary-section {
            padding: 56px 0;
            background: var(--bg-soft);
            border-top: 1px solid #E7ECF4;
            border-bottom: 1px solid #E7ECF4;
        }

        .data-summary-section h2 {
            margin-bottom: 24px;
            font-size: 24px;
        }

        .summary-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-bottom: 20px;
        }

        .summary-stat-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 22px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid #EDF1F7;
            transition: var(--transition);
        }

        .summary-stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .stat-number {
            font-family: var(--font-num);
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        .summary-note {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 820px;
            margin: 0 auto;
            text-align: center;
        }

        /* 标签筛选 */
        .tag-filter-section {
            padding: 48px 0;
            background: #fff;
        }

        .tag-filter-section h2 {
            margin-bottom: 20px;
            font-size: 22px;
        }

        .tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-badge {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 8px 18px;
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-tag);
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
            user-select: none;
        }

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

        .tag-badge.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(26, 109, 245, 0.22);
        }

        .tag-badge .tag-count {
            font-size: 11px;
            background: rgba(0, 0, 0, 0.06);
            padding: 1px 7px;
            border-radius: 10px;
            font-weight: 600;
        }

        .tag-badge.active .tag-count {
            background: rgba(255, 255, 255, 0.22);
        }

        /* 推荐阅读 */
        .recommend-section {
            padding: 56px 0;
            background: var(--bg-soft);
            border-top: 1px solid #E7ECF4;
            border-bottom: 1px solid #E7ECF4;
        }

        .recommend-section h2 {
            margin-bottom: 24px;
            font-size: 24px;
        }

        .recommend-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 18px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .recommend-item {
            display: flex;
            align-items: center;
            gap: 14px;
            background: #fff;
            border-radius: 10px;
            padding: 16px 18px;
            border: 1px solid #EDF1F7;
            transition: var(--transition);
            cursor: pointer;
        }

        .recommend-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
            border-color: #D3E2F8;
        }

        .recommend-item .rec-icon {
            width: 38px;
            height: 38px;
            border-radius: 8px;
            background: var(--primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 16px;
            flex-shrink: 0;
        }

        .recommend-item .rec-info {
            flex: 1;
            min-width: 0;
        }

        .recommend-item .rec-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 2px;
            transition: var(--transition);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .recommend-item:hover .rec-title {
            color: var(--primary);
        }

        .recommend-item .rec-date {
            font-size: 12px;
            color: #8A94A6;
        }

        /* 订阅 CTA */
        .subscribe-section {
            padding: 56px 0;
            background: #fff;
        }

        .subscribe-card {
            background: linear-gradient(135deg, #F4F8FC 0%, #EEF4FD 100%);
            border-radius: var(--radius-card);
            padding: 40px 36px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
            border: 1px solid #E0E8F4;
        }

        .subscribe-card h2 {
            margin-bottom: 6px;
            font-size: 22px;
        }

        .subscribe-card p {
            color: var(--text-secondary);
            font-size: 14px;
            margin-bottom: 0;
            line-height: 1.7;
            max-width: 480px;
        }

        .subscribe-form {
            display: flex;
            gap: 10px;
            flex-shrink: 0;
        }

        .subscribe-form input[type="email"] {
            padding: 11px 18px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-input);
            font-size: 14px;
            outline: none;
            width: 260px;
            background: #fff;
            color: var(--text-main);
            transition: var(--transition);
        }

        .subscribe-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 109, 245, 0.10);
        }

        .btn-subscribe {
            padding: 11px 26px;
            background: var(--primary);
            color: #fff !important;
            border: none;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
            line-height: 1.5;
        }

        .btn-subscribe:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 16px rgba(26, 109, 245, 0.24);
            transform: translateY(-2px);
        }

        /* FAQ */
        .faq-section {
            padding: 56px 0 72px;
            background: var(--bg-soft);
            border-top: 1px solid #E7ECF4;
        }

        .faq-section h2 {
            margin-bottom: 28px;
            font-size: 24px;
        }

        .faq-accordion .accordion-item {
            border: 1px solid var(--border-color);
            border-radius: 10px;
            margin-bottom: 12px;
            overflow: hidden;
            background: #fff;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        .faq-accordion .accordion-header {
            margin: 0;
        }

        .faq-accordion .accordion-button {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 16px 20px;
            background: #fff;
            border: none;
            border-radius: 0;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            transition: var(--transition);
            text-align: left;
            position: relative;
            box-shadow: none;
        }

        .faq-accordion .accordion-button::after {
            content: '\f067';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 13px;
            color: var(--text-secondary);
            transition: var(--transition);
            flex-shrink: 0;
            margin-left: 12px;
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: #FAFBFD;
        }

        .faq-accordion .accordion-button:not(.collapsed)::after {
            content: '\f068';
            color: var(--primary);
        }

        .faq-accordion .accordion-button:focus {
            outline: none;
            box-shadow: none;
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            box-shadow: none;
        }

        .faq-accordion .accordion-body {
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            background: #FAFBFD;
        }

        .faq-accordion .accordion-collapse {
            border: none;
        }

        /* 页脚 */
        .site-footer {
            background: #EEF4FD;
            padding: 48px 0 24px;
            margin-top: 0;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-brand .brand-logo {
            display: flex;
            align-items: center;
            gap: 9px;
            font-weight: 700;
            font-size: 18px;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 320px;
            margin-bottom: 0;
        }

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

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 14px;
        }

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

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

        .footer-col ul li a {
            font-size: 13px;
            color: var(--text-secondary);
            transition: var(--transition);
        }

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

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid #D3E2F8;
            font-size: 12px;
            color: var(--text-secondary);
        }

        .footer-info-links {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
        }

        .footer-info-links a {
            color: var(--text-secondary);
            transition: var(--transition);
        }

        .footer-info-links a:hover {
            color: var(--primary);
        }

        .footer-info-links .sep {
            color: #B0BCCD;
            margin: 0 4px;
        }

        /* 响应式 */
        @media (max-width: 991px) {
            .list-card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .summary-stats {
                grid-template-columns: repeat(4, 1fr);
                gap: 14px;
            }
            .recommend-list {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .subscribe-card {
                flex-direction: column;
                text-align: center;
                padding: 32px 24px;
                align-items: stretch;
            }
            .subscribe-form {
                justify-content: center;
                flex-wrap: wrap;
            }
            .subscribe-form input[type="email"] {
                width: 100%;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .nav-search {
                display: none;
            }
            .nav-links {
                display: none;
            }
            .hamburger {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }
        }

        @media (max-width: 767px) {
            .list-card-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .summary-stats {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-number {
                font-size: 26px;
            }
            .category-header h1 {
                font-size: 26px;
            }
            .category-header .cat-desc {
                font-size: 14px;
            }
            .content-list-section {
                padding: 24px 0 48px;
            }
            .content-list-section .section-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .data-summary-section,
            .tag-filter-section,
            .recommend-section,
            .subscribe-section,
            .faq-section {
                padding: 40px 0;
            }
            .subscribe-form {
                flex-direction: column;
                gap: 10px;
            }
            .subscribe-form input[type="email"] {
                width: 100%;
            }
            .btn-subscribe {
                width: 100%;
            }
            .tag-group {
                gap: 8px;
            }
            .tag-badge {
                padding: 7px 14px;
                font-size: 12px;
            }
            .footer-links {
                grid-template-columns: 1fr 1fr;
                gap: 18px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                align-items: center;
            }
            .footer-info-links {
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            h1 {
                font-size: 26px;
            }
            h2 {
                font-size: 22px;
            }
            h3 {
                font-size: 18px;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .nav-inner {
                padding: 0 16px;
            }
            .nav-brand {
                font-size: 16px;
            }
            .nav-btn {
                padding: 8px 14px;
                font-size: 13px;
            }
            .category-header h1 {
                font-size: 24px;
            }
            .list-card .card-img {
                height: 140px;
            }
            .list-card .card-body {
                padding: 14px 16px 16px;
            }
            .list-card .card-title {
                font-size: 15px;
            }
            .summary-stats {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .summary-stat-card {
                padding: 16px 14px;
            }
            .stat-number {
                font-size: 24px;
            }
            .subscribe-card {
                padding: 24px 18px;
                border-radius: 12px;
            }
            .subscribe-card h2 {
                font-size: 19px;
            }
            .faq-accordion .accordion-button {
                font-size: 14px;
                padding: 14px 16px;
            }
            .faq-accordion .accordion-body {
                padding: 0 16px 14px;
                font-size: 13px;
            }
            .footer-top {
                gap: 20px;
            }
            .footer-links {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .footer-col h4 {
                margin-bottom: 8px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #1A6DF5;
            --primary-dark: #1358C9;
            --primary-light: #4A90F5;
            --primary-soft: #EEF4FD;
            --accent: #0FA958;
            --accent-light: #E8F7EE;
            --text-main: #1A2233;
            --text-secondary: #5B6472;
            --text-body: #3A4453;
            --border-color: #DCE3EE;
            --bg-soft: #F4F8FC;
            --bg-white: #FFFFFF;
            --shadow-sm: 0 2px 8px rgba(26, 35, 50, 0.06);
            --shadow-md: 0 6px 20px rgba(26, 35, 50, 0.08);
            --shadow-lg: 0 12px 32px rgba(26, 109, 245, 0.10);
            --radius-card: 14px;
            --radius-btn: 7px;
            --radius-tag: 20px;
            --radius-input: 6px;
            --font-cn: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-num: "Inter", "Roboto", sans-serif;
            --section-padding: 72px 0;
            --section-padding-mobile: 48px 0;
            --transition: all 0.2s ease;
        }

        * {
            box-sizing: border-box;
        }

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

        body {
            font-family: var(--font-cn);
            font-size: 15px;
            line-height: 1.85;
            color: var(--text-body);
            background-color: var(--bg-white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
        }

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

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

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

        button,
        input,
        select,
        textarea {
            font-family: var(--font-cn);
            font-size: 15px;
        }

        h1, h2, h3, h4, h5, h6 {
            color: var(--text-main);
            font-weight: 700;
            line-height: 1.3;
            margin-top: 0;
        }

        h1 {
            font-size: 36px;
            letter-spacing: 0.5px;
            line-height: 1.25;
            font-weight: 700;
        }

        h2 {
            font-size: 28px;
            letter-spacing: 0.3px;
        }

        h3 {
            font-size: 20px;
            font-weight: 600;
            line-height: 1.4;
        }

        p {
            margin-bottom: 1rem;
        }

        .container {
            max-width: 1180px;
            padding-left: 24px;
            padding-right: 24px;
        }

        section {
            padding: var(--section-padding);
        }

        @media (max-width: 576px) {
            section {
                padding: var(--section-padding-mobile);
            }
            h1 {
                font-size: 26px;
            }
            h2 {
                font-size: 22px;
            }
            h3 {
                font-size: 18px;
            }
            body {
                font-size: 14px;
            }
        }

        /* 导航 */
        .top-nav {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: #FFFFFF;
            height: 62px;
            display: flex;
            align-items: center;
            box-shadow: 0 1px 0 rgba(0, 0, 0, 0.04);
            transition: box-shadow 0.25s ease;
        }

        .top-nav.scrolled {
            box-shadow: 0 6px 20px rgba(26, 35, 50, 0.08);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: 1180px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .nav-brand {
            display: flex;
            align-items: center;
            gap: 9px;
            font-weight: 700;
            font-size: 18px;
            color: var(--text-main);
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        .nav-brand .brand-icon {
            width: 30px;
            height: 30px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 7px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 15px;
            font-weight: 800;
            flex-shrink: 0;
        }

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

        .nav-links li a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 6px;
            transition: var(--transition);
            white-space: nowrap;
            position: relative;
        }

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

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

        .nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--primary);
            border-radius: 1px;
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .nav-search {
            position: relative;
            display: flex;
            align-items: center;
        }

        .nav-search input {
            width: 175px;
            padding: 9px 16px 9px 36px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-input);
            font-size: 13px;
            outline: none;
            transition: var(--transition);
            background: #FAFBFD;
            color: var(--text-main);
        }

        .nav-search input:focus {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(26, 109, 245, 0.10);
            width: 210px;
        }

        .nav-search .search-icon {
            position: absolute;
            left: 12px;
            color: var(--text-secondary);
            font-size: 13px;
            pointer-events: none;
        }

        .nav-search .kbd-hint {
            position: absolute;
            right: 10px;
            font-size: 11px;
            color: var(--text-secondary);
            background: #F0F3F8;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            padding: 1px 6px;
            pointer-events: none;
            font-weight: 500;
        }

        .nav-btn {
            padding: 9px 20px;
            background: var(--primary);
            color: #fff !important;
            border: none;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-btn:hover {
            background: var(--primary-dark);
            box-shadow: 0 4px 12px rgba(26, 109, 245, 0.25);
        }

        .nav-btn:focus-visible {
            outline: 3px solid rgba(26, 109, 245, 0.35);
            outline-offset: 2px;
        }

        .hamburger {
            display: none;
            background: transparent;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-btn);
            padding: 8px 12px;
            font-size: 18px;
            color: var(--text-main);
            cursor: pointer;
            transition: var(--transition);
        }

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

        .mobile-menu {
            display: none;
            position: absolute;
            top: 62px;
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-md);
            padding: 16px 24px 24px;
            z-index: 99;
        }

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

        .mobile-menu ul {
            list-style: none;
            padding: 0;
            margin: 0 0 16px;
        }

        .mobile-menu ul li a {
            display: block;
            padding: 12px 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-main);
            border-radius: 6px;
            transition: var(--transition);
        }

        .mobile-menu ul li a:hover,
        .mobile-menu ul li a.active {
            background: var(--primary-soft);
            color: var(--primary);
        }

        .search-mobile {
            margin-bottom: 12px;
        }

        .search-mobile input {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-input);
            font-size: 14px;
            outline: none;
            transition: var(--transition);
            background: #FAFBFD;
            color: var(--text-main);
        }

        .search-mobile input:focus {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(26, 109, 245, 0.10);
        }

        @media (max-width: 991px) {
            .nav-links {
                display: none;
            }
            .hamburger {
                display: inline-flex;
                align-items: center;
                justify-content: center;
                min-width: 44px;
                min-height: 44px;
            }
            .nav-search {
                display: none;
            }
            .nav-right {
                gap: 6px;
            }
            .nav-btn {
                padding: 8px 14px;
                font-size: 13px;
            }
        }

        @media (max-width: 576px) {
            .nav-inner {
                padding: 0 16px;
            }
            .nav-brand span:not(.brand-icon) {
                font-size: 16px;
            }
            .nav-brand .brand-icon {
                width: 26px;
                height: 26px;
                font-size: 13px;
            }
        }

        /* 面包屑 */
        .breadcrumb-wrapper {
            background: var(--bg-soft);
            padding: 14px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .breadcrumb-wrapper .breadcrumb {
            margin: 0;
            padding: 0;
            background: transparent;
            font-size: 13px;
            list-style: none;
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 4px;
        }

        .breadcrumb-wrapper .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .breadcrumb-wrapper .breadcrumb li:not(:last-child)::after {
            content: '/';
            color: var(--text-secondary);
            margin: 0 4px;
            font-size: 12px;
        }

        .breadcrumb-wrapper .breadcrumb li a {
            color: var(--text-secondary);
            font-weight: 500;
            transition: var(--transition);
        }

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

        .breadcrumb-wrapper .breadcrumb li.active {
            color: var(--primary);
            font-weight: 600;
        }

        /* 分类页头区 */
        .category-header {
            background: linear-gradient(180deg, #F0F6FE 0%, #FFFFFF 100%);
            padding: 52px 0 40px;
            border-bottom: 1px solid var(--border-color);
        }

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

        .category-header .category-badge i {
            font-size: 12px;
        }

        .category-header h1 {
            margin-bottom: 12px;
            font-size: 34px;
        }

        .category-header .category-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        @media (max-width: 576px) {
            .category-header {
                padding: 36px 0 28px;
            }
            .category-header h1 {
                font-size: 24px;
            }
            .category-header .category-desc {
                font-size: 14px;
            }
        }

        /* 列表卡片主体 */
        .insight-list-section {
            background: var(--bg-white);
            padding: 56px 0 48px;
        }

        .section-heading {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 28px;
            flex-wrap: wrap;
            gap: 12px;
        }

        .section-heading h2 {
            font-size: 24px;
            margin-bottom: 0;
            position: relative;
            padding-left: 16px;
        }

        .section-heading h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 24px;
            background: var(--primary);
            border-radius: 2px;
        }

        .section-heading .heading-more {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
            padding: 6px 4px;
            min-height: 44px;
            align-items: center;
        }

        .section-heading .heading-more:hover {
            color: var(--primary-dark);
            gap: 10px;
        }

        .insight-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .insight-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: rgba(26, 109, 245, 0.25);
        }

        .insight-card .card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/9;
            background: var(--primary-soft);
        }

        .insight-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .insight-card .card-img .img-badge {
            position: absolute;
            top: 10px;
            left: 10px;
            background: rgba(255, 255, 255, 0.92);
            color: var(--text-main);
            font-size: 11px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: var(--radius-tag);
            backdrop-filter: blur(4px);
            box-shadow: var(--shadow-sm);
        }

        .insight-card .card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .insight-card .card-date {
            font-size: 12px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 6px;
            margin-bottom: 8px;
        }

        .insight-card .card-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.5;
            margin-bottom: 8px;
        }

        .insight-card .card-text {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .insight-card .card-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: var(--transition);
        }

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

        /* 数据摘要 */
        .data-overview-section {
            background: var(--bg-soft);
            padding: 56px 0;
        }

        .overview-stat-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 24px 28px;
            box-shadow: var(--shadow-sm);
            text-align: center;
            transition: var(--transition);
            border: 1px solid var(--border-color);
            height: 100%;
        }

        .overview-stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: rgba(26, 109, 245, 0.2);
        }

        .overview-stat-card .stat-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: var(--primary-soft);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 10px;
        }

        .overview-stat-card .stat-number {
            font-family: var(--font-num);
            font-size: 30px;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .overview-stat-card .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        .overview-desc-block {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 28px 32px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            margin-top: 20px;
        }

        .overview-desc-block p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.9;
            margin-bottom: 0;
        }

        /* 标签筛选 */
        .tag-filter-section {
            background: var(--bg-white);
            padding: 48px 0 40px;
        }

        .tag-filter-group {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 16px;
        }

        .tag-filter-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-tag);
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            background: #fff;
            cursor: pointer;
            transition: var(--transition);
            min-height: 40px;
            white-space: nowrap;
        }

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

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

        .tag-filter-btn:focus-visible {
            outline: 3px solid rgba(26, 109, 245, 0.3);
            outline-offset: 2px;
        }

        /* 推荐阅读 */
        .recommend-section {
            background: var(--bg-soft);
            padding: 56px 0;
        }

        .recommend-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 20px 24px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .recommend-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: rgba(26, 109, 245, 0.2);
        }

        .recommend-card .rec-tag {
            font-size: 11px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-soft);
            padding: 3px 10px;
            border-radius: var(--radius-tag);
            display: inline-block;
            margin-bottom: 10px;
            align-self: flex-start;
        }

        .recommend-card h4 {
            font-size: 15px;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .recommend-card p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .recommend-card .rec-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: var(--transition);
        }

        .recommend-card .rec-link:hover {
            color: var(--primary-dark);
            gap: 8px;
        }

        /* 订阅条 */
        .subscribe-strip {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            padding: 48px 0;
            border-radius: 0;
            position: relative;
            overflow: hidden;
        }

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

        .subscribe-strip::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: 20%;
            width: 300px;
            height: 300px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 50%;
            pointer-events: none;
        }

        .subscribe-strip .container {
            position: relative;
            z-index: 1;
        }

        .subscribe-strip h2 {
            color: #fff;
            font-size: 24px;
            margin-bottom: 8px;
        }

        .subscribe-strip p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 14px;
            margin-bottom: 20px;
            max-width: 480px;
        }

        .subscribe-form {
            display: flex;
            gap: 10px;
            max-width: 480px;
            flex-wrap: wrap;
        }

        .subscribe-form input {
            flex: 1;
            min-width: 200px;
            padding: 12px 16px;
            border: none;
            border-radius: var(--radius-btn);
            font-size: 14px;
            outline: none;
            transition: var(--transition);
            background: rgba(255, 255, 255, 0.95);
            color: var(--text-main);
        }

        .subscribe-form input:focus {
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.35);
            background: #fff;
        }

        .subscribe-form .sub-btn {
            padding: 12px 24px;
            background: #fff;
            color: var(--primary);
            border: none;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
            min-height: 48px;
        }

        .subscribe-form .sub-btn:hover {
            background: #F0F4FA;
            color: var(--primary-dark);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
        }

        .subscribe-form .sub-btn:focus-visible {
            outline: 3px solid rgba(255, 255, 255, 0.5);
            outline-offset: 2px;
        }

        @media (max-width: 576px) {
            .subscribe-strip h2 {
                font-size: 20px;
            }
            .subscribe-form {
                flex-direction: column;
            }
            .subscribe-form input {
                width: 100%;
                min-width: auto;
            }
        }

        /* FAQ */
        .faq-section {
            background: var(--bg-white);
            padding: 56px 0;
        }

        .accordion-item {
            border: 1px solid var(--border-color) !important;
            border-radius: 10px !important;
            margin-bottom: 10px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            background: #fff;
            transition: var(--transition);
        }

        .accordion-item:hover {
            border-color: rgba(26, 109, 245, 0.3) !important;
        }

        .accordion-button {
            background: #fff !important;
            color: var(--text-main) !important;
            font-size: 15px !important;
            font-weight: 600 !important;
            padding: 16px 20px;
            border: none;
            box-shadow: none !important;
            transition: var(--transition);
            min-height: 52px;
            display: flex;
            align-items: center;
        }

        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(26, 109, 245, 0.12) !important;
            border-color: var(--primary) !important;
        }

        .accordion-button:not(.collapsed) {
            color: var(--primary) !important;
            border-left: 3px solid var(--primary);
            background: var(--primary-soft) !important;
        }

        .accordion-button::after {
            transition: var(--transition);
        }

        .accordion-button:not(.collapsed)::after {
            filter: sepia(1) saturate(5) hue-rotate(180deg);
        }

        .accordion-body {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.8;
            padding: 16px 20px 20px;
        }

        /* 页脚 */
        .site-footer {
            background: #EEF4FD;
            padding: 48px 0 24px;
            border-top: 1px solid var(--border-color);
        }

        .footer-top {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-brand {
            flex: 0 0 280px;
            max-width: 280px;
        }

        .footer-brand .brand-logo {
            display: flex;
            align-items: center;
            gap: 9px;
            font-weight: 700;
            font-size: 17px;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .footer-links {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
            flex: 1;
            justify-content: flex-end;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
        }

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

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

        .footer-col ul li a {
            font-size: 13px;
            color: var(--text-secondary);
            transition: var(--transition);
        }

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

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px 16px;
            padding-top: 20px;
            border-top: 1px solid rgba(26, 35, 50, 0.08);
            font-size: 12px;
            color: var(--text-secondary);
        }

        .footer-info-links {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
        }

        .footer-info-links a {
            color: var(--text-secondary);
            font-size: 12px;
            transition: var(--transition);
        }

        .footer-info-links a:hover {
            color: var(--primary);
        }

        .footer-info-links .sep {
            color: rgba(26, 35, 50, 0.25);
            margin: 0 4px;
        }

        @media (max-width: 768px) {
            .footer-top {
                flex-direction: column;
                gap: 28px;
            }
            .footer-brand {
                flex: 1;
                max-width: 100%;
            }
            .footer-links {
                justify-content: flex-start;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 576px) {
            .footer-links {
                flex-direction: column;
                gap: 18px;
            }
            .footer-bottom {
                text-align: left;
            }
        }

        /* 响应式补充 */
        @media (max-width: 768px) {
            .insight-card .card-body {
                padding: 14px 16px 16px;
            }
            .insight-card .card-title {
                font-size: 15px;
            }
            .overview-stat-card .stat-number {
                font-size: 26px;
            }
            .overview-stat-card {
                padding: 18px 16px;
            }
            .overview-desc-block {
                padding: 20px 18px;
            }
            .tag-filter-btn {
                padding: 7px 14px;
                font-size: 12px;
                min-height: 36px;
            }
            .recommend-card {
                padding: 16px 18px;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #1A6DF5;
            --primary-dark: #1358C9;
            --primary-light: #4A90F5;
            --primary-soft: #EEF4FD;
            --accent: #0FA958;
            --accent-light: #E8F7EE;
            --text-main: #1A2233;
            --text-secondary: #5B6472;
            --text-body: #3A4453;
            --border-color: #DCE3EE;
            --bg-soft: #F4F8FC;
            --bg-white: #FFFFFF;
            --shadow-sm: 0 2px 8px rgba(26, 35, 50, 0.06);
            --shadow-md: 0 6px 20px rgba(26, 35, 50, 0.08);
            --shadow-lg: 0 12px 32px rgba(26, 109, 245, 0.10);
            --radius-card: 14px;
            --radius-btn: 7px;
            --radius-tag: 20px;
            --radius-input: 6px;
            --font-cn: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-num: "Inter", "Roboto", sans-serif;
            --section-padding: 84px 0;
            --section-padding-mobile: 52px 0;
            --transition: all 0.2s ease;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-cn);
            font-size: 15px;
            line-height: 1.85;
            color: var(--text-body);
            background-color: var(--bg-white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: var(--font-cn);
            font-size: 15px;
        }
        .container {
            max-width: 1180px;
            padding-left: 24px;
            padding-right: 24px;
        }
        .top-nav {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: #FFFFFF;
            height: 62px;
            display: flex;
            align-items: center;
            box-shadow: 0 1px 0 rgba(0, 0, 0, 0.04);
            transition: box-shadow 0.25s ease;
        }
        .top-nav.scrolled {
            box-shadow: 0 6px 20px rgba(26, 35, 50, 0.08);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: 1180px;
            margin: 0 auto;
            padding: 0 24px;
            gap: 16px;
        }
        .nav-brand {
            display: flex;
            align-items: center;
            gap: 9px;
            font-weight: 700;
            font-size: 18px;
            color: var(--text-main);
            letter-spacing: 0.3px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .nav-brand .brand-icon {
            width: 30px;
            height: 30px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 7px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 15px;
            font-weight: 800;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 2px;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
        }
        .nav-links li a {
            display: inline-block;
            padding: 8px 13px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 6px;
            transition: var(--transition);
            white-space: nowrap;
            position: relative;
        }
        .nav-links li a:hover {
            color: var(--primary);
            background: var(--primary-soft);
        }
        .nav-links li a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 13px;
            right: 13px;
            height: 2px;
            background: var(--primary);
            border-radius: 1px;
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .nav-search {
            position: relative;
            display: flex;
            align-items: center;
        }
        .nav-search input {
            width: 165px;
            padding: 9px 16px 9px 36px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-input);
            font-size: 13px;
            outline: none;
            transition: var(--transition);
            background: #FAFBFD;
            color: var(--text-main);
        }
        .nav-search input:focus {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(26, 109, 245, 0.10);
            width: 200px;
        }
        .nav-search .search-icon {
            position: absolute;
            left: 12px;
            color: var(--text-secondary);
            font-size: 13px;
            pointer-events: none;
        }
        .nav-search .kbd-hint {
            position: absolute;
            right: 10px;
            font-size: 11px;
            color: var(--text-secondary);
            background: #F0F3F8;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            padding: 1px 6px;
            pointer-events: none;
            font-weight: 500;
        }
        .nav-btn {
            padding: 9px 20px;
            background: var(--primary);
            color: #fff !important;
            border: none;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-btn:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 16px rgba(26, 109, 245, 0.25);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: var(--text-main);
            font-size: 22px;
            cursor: pointer;
            padding: 6px;
            border-radius: 6px;
            transition: var(--transition);
        }
        .hamburger:hover {
            background: var(--primary-soft);
            color: var(--primary);
        }
        .mobile-menu {
            display: none;
            position: absolute;
            top: 62px;
            left: 0;
            right: 0;
            background: #fff;
            box-shadow: 0 12px 32px rgba(26, 35, 50, 0.12);
            padding: 20px 24px;
            z-index: 999;
            border-top: 1px solid var(--border-color);
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu .search-mobile {
            margin-bottom: 16px;
        }
        .mobile-menu .search-mobile input {
            width: 100%;
            padding: 11px 16px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-input);
            font-size: 14px;
            outline: none;
        }
        .mobile-menu ul {
            list-style: none;
            margin: 0 0 16px;
            padding: 0;
        }
        .mobile-menu ul li a {
            display: block;
            padding: 12px 4px;
            color: var(--text-main);
            font-size: 15px;
            font-weight: 500;
            border-bottom: 1px solid #F0F3F8;
            transition: var(--transition);
        }
        .mobile-menu ul li a:hover {
            color: var(--primary);
            background: var(--primary-soft);
            padding-left: 12px;
        }
        .mobile-menu ul li a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .breadcrumb-section {
            background: var(--bg-soft);
            padding: 20px 0;
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-secondary);
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .breadcrumb-nav li {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .breadcrumb-nav a {
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .breadcrumb-nav a:hover {
            color: var(--primary);
        }
        .breadcrumb-nav .current {
            color: var(--text-main);
            font-weight: 600;
        }
        .breadcrumb-nav .separator {
            color: #BCC7D9;
            font-size: 11px;
        }
        .category-hero {
            background: #fff;
            padding: 48px 0 40px;
        }
        .category-hero h1 {
            font-size: 34px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.3;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .category-hero .lead-text {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.9;
            margin: 0;
        }
        .category-hero .hero-meta {
            display: flex;
            align-items: center;
            gap: 18px;
            margin-top: 18px;
            font-size: 13px;
            color: var(--text-secondary);
            flex-wrap: wrap;
        }
        .category-hero .hero-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .category-hero .hero-meta i {
            font-size: 13px;
            color: var(--primary);
        }
        .news-list-section {
            padding: 48px 0 72px;
            background: var(--bg-white);
        }
        .section-heading {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 32px;
            gap: 16px;
            flex-wrap: wrap;
        }
        .section-heading h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-main);
            margin: 0;
            line-height: 1.35;
        }
        .section-heading .view-all {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .section-heading .view-all:hover {
            color: var(--primary-dark);
            gap: 10px;
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .news-card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
            border: 1px solid #F0F3F8;
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .news-card .card-image {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--bg-soft);
        }
        .news-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .news-card:hover .card-image img {
            transform: scale(1.04);
        }
        .news-card .card-image .tag-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-tag);
            z-index: 2;
        }
        .news-card .card-body {
            padding: 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card .card-body .date {
            font-size: 12px;
            color: #8A94A6;
            display: flex;
            align-items: center;
            gap: 5px;
            margin-bottom: 8px;
        }
        .news-card .card-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            margin: 0 0 10px;
            line-height: 1.5;
        }
        .news-card .card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0 0 14px;
            flex: 1;
        }
        .news-card .card-body .read-more {
            font-size: 13px;
            font-weight: 500;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 5px;
            align-self: flex-start;
            transition: var(--transition);
        }
        .news-card .card-body .read-more:hover {
            color: var(--primary-dark);
            gap: 8px;
        }
        .data-summary-section {
            padding: 64px 0;
            background: var(--bg-soft);
        }
        .data-summary-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
        }
        .data-summary-text h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 14px;
            line-height: 1.4;
        }
        .data-summary-text p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin: 0;
        }
        .data-summary-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }
        .summary-stat-card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            padding: 22px 16px;
            text-align: center;
            border-top: 3px solid var(--primary);
        }
        .summary-stat-card .stat-number {
            font-family: var(--font-num);
            font-size: 30px;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.2;
        }
        .summary-stat-card .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 6px;
        }
        .filter-section {
            padding: 48px 0;
            background: #fff;
        }
        .filter-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .filter-tag {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: var(--radius-tag);
            font-size: 13px;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid var(--border-color);
            background: #fff;
            color: var(--text-secondary);
            white-space: nowrap;
        }
        .filter-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-soft);
        }
        .filter-tag.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            font-weight: 600;
        }
        .recommend-section {
            padding: 56px 0;
            background: var(--bg-soft);
        }
        .recommend-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .recommend-card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
            border: 1px solid #F0F3F8;
        }
        .recommend-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .recommend-card .img-wrap {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--bg-soft);
        }
        .recommend-card .img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .recommend-card:hover .img-wrap img {
            transform: scale(1.05);
        }
        .recommend-card .body {
            padding: 16px 18px;
        }
        .recommend-card .body .tag {
            font-size: 11px;
            color: var(--primary);
            font-weight: 600;
            background: var(--primary-soft);
            padding: 2px 10px;
            border-radius: var(--radius-tag);
            display: inline-block;
            margin-bottom: 6px;
        }
        .recommend-card .body h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin: 0;
            line-height: 1.5;
        }
        .subscribe-section {
            padding: 56px 0;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
        }
        .subscribe-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }
        .subscribe-text h2 {
            font-size: 22px;
            font-weight: 700;
            margin: 0 0 8px;
            color: #fff;
        }
        .subscribe-text p {
            font-size: 14px;
            margin: 0;
            opacity: 0.9;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.9);
        }
        .subscribe-form {
            display: flex;
            gap: 10px;
            align-items: center;
            flex-wrap: wrap;
        }
        .subscribe-form input {
            padding: 11px 18px;
            border: none;
            border-radius: var(--radius-input);
            font-size: 14px;
            outline: none;
            min-width: 260px;
            background: #fff;
            color: var(--text-main);
        }
        .subscribe-form input:focus {
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.35);
        }
        .subscribe-form .sub-btn {
            padding: 11px 24px;
            background: #fff;
            color: var(--primary) !important;
            border: none;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        .subscribe-form .sub-btn:hover {
            background: #F0F3F8;
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
        }
        .faq-section {
            padding: 64px 0;
            background: #fff;
        }
        .faq-section .accordion-item {
            border: 1px solid var(--border-color);
            border-radius: 10px !important;
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .faq-section .accordion-button {
            background: #fff;
            color: var(--text-main);
            font-weight: 600;
            font-size: 15px;
            padding: 16px 20px;
            border: none;
            box-shadow: none !important;
            outline: none;
            transition: var(--transition);
        }
        .faq-section .accordion-button:not(.collapsed) {
            background: var(--primary-soft);
            color: var(--primary);
            border-left: 3px solid var(--primary);
        }
        .faq-section .accordion-button:focus {
            box-shadow: none;
            border-color: var(--primary);
        }
        .faq-section .accordion-button::after {
            background-size: 14px;
            transition: var(--transition);
        }
        .faq-section .accordion-body {
            padding: 16px 20px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.9;
            background: #fff;
        }
        .site-footer {
            background: var(--bg-soft);
            padding: 48px 0 24px;
            border-top: 1px solid var(--border-color);
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1.2fr 2fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid var(--border-color);
        }
        .footer-brand .brand-logo {
            display: flex;
            align-items: center;
            gap: 9px;
            font-weight: 700;
            font-size: 18px;
            color: var(--text-main);
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0;
            max-width: 360px;
        }
        .footer-links {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            margin: 0 0 14px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 13px;
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 20px;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: var(--text-secondary);
        }
        .footer-info-links {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .footer-info-links .sep {
            color: #C5CFDF;
        }
        .footer-info-links a {
            color: var(--text-secondary);
            font-size: 12px;
        }
        .footer-info-links a:hover {
            color: var(--primary);
        }
        @media (max-width: 991px) {
            .nav-links {
                gap: 0;
            }
            .nav-links li a {
                padding: 8px 10px;
                font-size: 13px;
            }
            .nav-search input {
                width: 130px;
            }
            .news-grid {
                grid-template-columns: 1fr 1fr;
                gap: 18px;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .recommend-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 14px;
            }
            .data-summary-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 767px) {
            .nav-links {
                display: none;
            }
            .nav-search {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .nav-btn {
                display: none;
            }
            .nav-inner {
                justify-content: space-between;
            }
            .category-hero h1 {
                font-size: 26px;
            }
            .news-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .news-card .card-body h3 {
                font-size: 15px;
            }
            .section-heading h2 {
                font-size: 21px;
            }
            .data-summary-stats {
                grid-template-columns: repeat(3, 1fr);
                gap: 10px;
            }
            .summary-stat-card .stat-number {
                font-size: 22px;
            }
            .summary-stat-card .stat-label {
                font-size: 11px;
            }
            .recommend-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .subscribe-inner {
                flex-direction: column;
                align-items: flex-start;
                gap: 18px;
            }
            .subscribe-form input {
                min-width: 100%;
            }
            .footer-links {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .breadcrumb-section {
                padding: 14px 0;
            }
            .category-hero {
                padding: 32px 0 28px;
            }
            .news-list-section {
                padding: 32px 0 52px;
            }
        }
        @media (max-width: 575px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .data-summary-stats {
                grid-template-columns: 1fr 1fr;
            }
            .filter-tag {
                padding: 6px 14px;
                font-size: 12px;
            }
            .footer-links {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .footer-info-links {
                gap: 6px;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #1A6DF5;
            --primary-dark: #1358C9;
            --primary-light: #4A90F5;
            --primary-soft: #EEF4FD;
            --accent: #0FA958;
            --accent-light: #E8F7EE;
            --text-main: #1A2233;
            --text-secondary: #5B6472;
            --text-body: #3A4453;
            --border-color: #DCE3EE;
            --bg-soft: #F4F8FC;
            --bg-white: #FFFFFF;
            --shadow-sm: 0 2px 8px rgba(26, 35, 50, 0.06);
            --shadow-md: 0 6px 20px rgba(26, 35, 50, 0.08);
            --shadow-lg: 0 12px 32px rgba(26, 109, 245, 0.10);
            --radius-card: 14px;
            --radius-btn: 7px;
            --radius-tag: 20px;
            --radius-input: 6px;
            --font-cn: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-num: "Inter", "Roboto", sans-serif;
            --section-padding: 72px 0;
            --section-padding-mobile: 48px 0;
            --transition: all 0.2s ease;
        }

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

        body {
            font-family: var(--font-cn);
            font-size: 15px;
            line-height: 1.85;
            color: var(--text-body);
            background-color: var(--bg-white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        button,
        input,
        select,
        textarea {
            font-family: var(--font-cn);
            font-size: 15px;
        }

        .container {
            max-width: 1180px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* 导航 */
        .top-nav {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: #FFFFFF;
            height: 62px;
            display: flex;
            align-items: center;
            box-shadow: 0 1px 0 rgba(0, 0, 0, 0.04);
            transition: box-shadow 0.25s ease;
        }

        .top-nav.scrolled {
            box-shadow: 0 6px 20px rgba(26, 35, 50, 0.08);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: 1180px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .nav-brand {
            display: flex;
            align-items: center;
            gap: 9px;
            font-weight: 700;
            font-size: 18px;
            color: var(--text-main);
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        .nav-brand .brand-icon {
            width: 30px;
            height: 30px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 7px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 15px;
            font-weight: 800;
            flex-shrink: 0;
        }

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

        .nav-links li a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 6px;
            transition: var(--transition);
            white-space: nowrap;
            position: relative;
        }

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

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

        .nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--primary);
            border-radius: 1px;
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .nav-search {
            position: relative;
            display: flex;
            align-items: center;
        }

        .nav-search input {
            width: 175px;
            padding: 9px 16px 9px 36px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-input);
            font-size: 13px;
            outline: none;
            transition: var(--transition);
            background: #FAFBFD;
            color: var(--text-main);
        }

        .nav-search input:focus {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(26, 109, 245, 0.10);
            width: 210px;
        }

        .nav-search .search-icon {
            position: absolute;
            left: 12px;
            color: var(--text-secondary);
            font-size: 13px;
            pointer-events: none;
        }

        .nav-search .kbd-hint {
            position: absolute;
            right: 10px;
            font-size: 11px;
            color: var(--text-secondary);
            background: #F0F3F8;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            padding: 1px 6px;
            pointer-events: none;
            font-weight: 500;
        }

        .nav-btn {
            padding: 9px 20px;
            background: var(--primary);
            color: #fff !important;
            border: none;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 14px;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-btn:hover {
            background: var(--primary-dark);
            box-shadow: 0 4px 14px rgba(26, 109, 245, 0.25);
        }

        .hamburger {
            display: none;
            background: none;
            border: none;
            color: var(--text-main);
            font-size: 20px;
            cursor: pointer;
            padding: 8px;
            border-radius: 6px;
            transition: var(--transition);
        }

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

        .mobile-menu {
            display: none;
            position: absolute;
            top: 62px;
            left: 0;
            right: 0;
            background: #fff;
            box-shadow: var(--shadow-md);
            padding: 20px 24px;
            z-index: 999;
        }

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

        .search-mobile {
            margin-bottom: 16px;
        }

        .search-mobile input {
            width: 100%;
            padding: 10px 16px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-input);
            font-size: 14px;
            outline: none;
            background: #FAFBFD;
        }

        .search-mobile input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 109, 245, 0.10);
        }

        .mobile-menu ul {
            list-style: none;
            margin: 0 0 16px 0;
            padding: 0;
        }

        .mobile-menu ul li a {
            display: block;
            padding: 12px 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 6px;
            transition: var(--transition);
        }

        .mobile-menu ul li a:hover {
            background: var(--primary-soft);
            color: var(--primary);
        }

        .mobile-menu ul li a.active {
            color: var(--primary);
            font-weight: 600;
            background: var(--primary-soft);
        }

        /* 面包屑 */
        .breadcrumb-section {
            padding: 18px 0 6px;
            background: var(--bg-white);
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-secondary);
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .breadcrumb-nav li {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb-nav li a {
            color: var(--text-secondary);
            transition: var(--transition);
        }

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

        .breadcrumb-nav li.sep {
            color: #B8C4D4;
            font-size: 11px;
        }

        .breadcrumb-nav li.current {
            color: var(--primary);
            font-weight: 600;
        }

        /* 分类页头区 */
        .category-header {
            padding: 32px 0 40px;
            background: var(--bg-soft);
            border-bottom: 1px solid var(--border-color);
        }

        .category-header h1 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: 0.5px;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .category-header .category-desc {
            font-size: 15px;
            line-height: 1.9;
            color: var(--text-secondary);
            max-width: 680px;
            margin-bottom: 0;
        }

        /* 列表/卡片主体 */
        .review-list-section {
            padding: var(--section-padding);
            background: var(--bg-white);
        }

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

        .review-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .review-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: rgba(26, 109, 245, 0.2);
        }

        .review-card .card-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            background: var(--primary-soft);
        }

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

        .review-card .card-date {
            font-size: 12px;
            color: var(--text-secondary);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .review-card .card-date i {
            color: #B8C4D4;
            font-size: 11px;
        }

        .review-card .card-title {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.45;
            color: var(--text-main);
            margin-bottom: 10px;
            transition: var(--transition);
        }

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

        .review-card .card-summary {
            font-size: 14px;
            line-height: 1.75;
            color: var(--text-body);
            flex: 1;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .review-card .card-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 5px;
            transition: var(--transition);
        }

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

        .load-more-wrap {
            text-align: center;
            margin-top: 36px;
        }

        .load-more-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 11px 28px;
            background: transparent;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-btn);
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 14px;
            cursor: pointer;
            transition: var(--transition);
        }

        .load-more-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-soft);
        }

        /* 数据摘要 */
        .data-summary-section {
            padding: var(--section-padding);
            background: var(--bg-soft);
        }

        .data-summary-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .data-summary-text h2 {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-main);
            margin-bottom: 16px;
        }

        .data-summary-text p {
            font-size: 15px;
            line-height: 1.9;
            color: var(--text-body);
            margin-bottom: 0;
        }

        .data-summary-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }

        .stat-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            padding: 22px 18px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .stat-card .stat-num {
            font-family: var(--font-num);
            font-size: 30px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .stat-card .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* 标签筛选 */
        .tag-filter-section {
            padding: var(--section-padding);
            background: var(--bg-white);
        }

        .tag-filter-section h2 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 20px;
        }

        .tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-tag);
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            cursor: pointer;
            transition: var(--transition);
            user-select: none;
        }

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

        .tag-badge.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        /* 推荐阅读 */
        .recommended-section {
            padding: var(--section-padding);
            background: var(--bg-soft);
        }

        .recommended-section h2 {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-main);
            margin-bottom: 24px;
        }

        .recommended-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .recommended-item {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            display: block;
        }

        .recommended-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: rgba(26, 109, 245, 0.18);
        }

        .recommended-item .rec-tag {
            font-size: 11px;
            font-weight: 600;
            color: var(--accent);
            background: var(--accent-light);
            padding: 3px 10px;
            border-radius: 12px;
            display: inline-block;
            margin-bottom: 10px;
        }

        .recommended-item .rec-title {
            font-size: 15px;
            font-weight: 600;
            line-height: 1.5;
            color: var(--text-main);
            margin-bottom: 6px;
        }

        .recommended-item .rec-date {
            font-size: 12px;
            color: var(--text-secondary);
        }

        /* 订阅CTA */
        .newsletter-section {
            padding: var(--section-padding);
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
        }

        .newsletter-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }

        .newsletter-text h2 {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.3;
            color: #fff;
            margin-bottom: 8px;
        }

        .newsletter-text p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 0;
        }

        .newsletter-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .newsletter-form input {
            padding: 11px 18px;
            border: none;
            border-radius: var(--radius-input);
            font-size: 14px;
            outline: none;
            width: 280px;
            background: #fff;
            color: var(--text-main);
        }

        .newsletter-form input:focus {
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.35);
        }

        .newsletter-form button {
            padding: 11px 24px;
            background: #fff;
            color: var(--primary);
            border: none;
            border-radius: var(--radius-input);
            font-weight: 600;
            font-size: 14px;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }

        .newsletter-form button:hover {
            background: var(--primary-soft);
            color: var(--primary-dark);
        }

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

        .faq-section h2 {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-main);
            margin-bottom: 24px;
            text-align: center;
        }

        .accordion-custom {
            max-width: 780px;
            margin: 0 auto;
        }

        .accordion-custom .accordion-item {
            border: 1px solid var(--border-color);
            border-radius: 10px;
            margin-bottom: 12px;
            overflow: hidden;
            background: var(--bg-white);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .accordion-custom .accordion-item:hover {
            box-shadow: var(--shadow-md);
        }

        .accordion-custom .accordion-header {
            margin: 0;
        }

        .accordion-custom .accordion-button {
            padding: 18px 22px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            background: var(--bg-white);
            border: none;
            box-shadow: none;
            cursor: pointer;
            transition: var(--transition);
            width: 100%;
            text-align: left;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            border-radius: 0;
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: var(--primary-soft);
            box-shadow: none;
        }

        .accordion-custom .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(26, 109, 245, 0.12);
            outline: none;
        }

        .accordion-custom .accordion-button::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 13px;
            color: var(--text-secondary);
            transition: transform 0.25s ease;
            flex-shrink: 0;
            background-image: none;
            width: auto;
            height: auto;
        }

        .accordion-custom .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .accordion-custom .accordion-body {
            padding: 16px 22px 20px;
            font-size: 14px;
            line-height: 1.85;
            color: var(--text-body);
            background: var(--bg-white);
            border-top: 1px solid var(--border-color);
        }

        /* 页脚 */
        .site-footer {
            background: #EEF4FD;
            padding: 48px 0 0;
            border-top: 1px solid var(--border-color);
        }

        .footer-top {
            display: flex;
            justify-content: space-between;
            gap: 48px;
            flex-wrap: wrap;
            padding-bottom: 32px;
        }

        .footer-brand {
            max-width: 340px;
        }

        .footer-brand .brand-logo {
            display: flex;
            align-items: center;
            gap: 9px;
            font-weight: 700;
            font-size: 18px;
            color: var(--text-main);
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        .footer-links {
            display: flex;
            gap: 48px;
            flex-wrap: wrap;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 14px;
        }

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

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

        .footer-col ul li a {
            font-size: 13px;
            color: var(--text-secondary);
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding: 18px 0 22px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: var(--text-secondary);
        }

        .footer-info-links {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }

        .footer-info-links .sep {
            color: #B8C4D4;
        }

        .footer-info-links a {
            font-size: 12px;
            color: var(--text-secondary);
        }

        .footer-info-links a:hover {
            color: var(--primary);
        }

        /* 响应式 */
        @media (max-width: 991px) {
            .review-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .recommended-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .data-summary-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .data-summary-stats {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (max-width: 767px) {
            .nav-links {
                display: none;
            }
            .nav-search {
                display: none;
            }
            .hamburger {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }
            .category-header h1 {
                font-size: 28px;
            }
            .review-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .data-summary-stats {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .recommended-list {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .newsletter-inner {
                flex-direction: column;
                align-items: stretch;
            }
            .newsletter-form input {
                width: 100%;
            }
            .newsletter-form {
                flex-direction: column;
            }
            .newsletter-form button {
                width: 100%;
            }
            .footer-top {
                flex-direction: column;
                gap: 28px;
            }
            .footer-links {
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .footer-info-links {
                flex-wrap: wrap;
            }
            .breadcrumb-section {
                padding: 14px 0 4px;
            }
            .category-header {
                padding: 24px 0 32px;
            }
            .category-header h1 {
                font-size: 26px;
            }
            .stat-card .stat-num {
                font-size: 24px;
            }
        }

        @media (max-width: 575px) {
            .container {
                padding-left: 18px;
                padding-right: 18px;
            }
            .nav-inner {
                padding: 0 18px;
            }
            .data-summary-stats {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .tag-badge {
                padding: 6px 14px;
                font-size: 12px;
            }
            .review-card .card-body {
                padding: 16px 18px 18px;
            }
            .review-card .card-title {
                font-size: 16px;
            }
            .accordion-custom .accordion-button {
                font-size: 14px;
                padding: 15px 18px;
            }
            .accordion-custom .accordion-body {
                font-size: 13px;
                padding: 14px 18px 16px;
            }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}