/* roulang page: index */
:root {
            --primary: #2563EB;
            --primary-dark: #1D4ED8;
            --primary-light: #EFF6FF;
            --accent: #F59E0B;
            --accent-dark: #D97706;
            --accent-light: #FFF7E6;
            --bg: #F8FAFC;
            --white: #FFFFFF;
            --text: #0F172A;
            --text-secondary: #475569;
            --text-muted: #64748B;
            --text-light: #94A3B8;
            --border: #E5E7EB;
            --border-light: #F1F5F9;
            --footer-bg: #1E293B;
            --footer-text: #CBD5E1;
            --footer-muted: #94A3B8;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 20px;
            --radius-full: 999px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 24px rgba(37, 99, 235, 0.12);
            --shadow-accent: 0 8px 24px rgba(245, 158, 11, 0.18);
            --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --container-max: 1200px;
            --section-pad: 80px;
            --section-pad-mobile: 48px;
            --gap: 24px;
            --gap-sm: 16px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            padding-bottom: 80px;
            min-height: 100vh;
        }

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

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

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

        button {
            font-family: var(--font-family);
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
        }

        input,
        select {
            font-family: var(--font-family);
            font-size: 14px;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ===== 顶部导航 ===== */
        .site-header {
            position: fixed;
            top: 16px;
            left: 50%;
            transform: translateX(-50%);
            width: calc(100% - 40px);
            max-width: 1180px;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-radius: var(--radius-full);
            border: 1px solid rgba(229, 231, 235, 0.8);
            transition: box-shadow var(--transition), background var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
            background: rgba(255, 255, 255, 0.96);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 8px 20px;
            gap: 16px;
        }

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

        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

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

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
        }

        .main-nav li a {
            display: inline-block;
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-full);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .main-nav li a:hover {
            color: var(--primary);
            background: rgba(37, 99, 235, 0.08);
        }

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

        .nav-cta {
            display: inline-block;
            padding: 8px 20px;
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            background: var(--primary);
            border-radius: var(--radius-full);
            transition: all var(--transition);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .nav-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
            background: transparent;
            border: none;
            cursor: pointer;
            flex-shrink: 0;
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all var(--transition);
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== 移动端导航 ===== */
        .mobile-nav {
            display: none;
            flex-direction: column;
            padding: 12px 16px 16px;
            background: #fff;
            border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            border-top: 1px solid var(--border-light);
        }

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

        .mobile-nav a {
            display: block;
            padding: 12px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-full);
            transition: all var(--transition);
        }

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

        /* ===== Hero ===== */
        .hero {
            position: relative;
            padding: 140px 0 80px;
            background: linear-gradient(135deg, rgba(30, 41, 59, 0.82) 0%, rgba(37, 99, 235, 0.55) 100%), url('/assets/images/569d4467803cb853.webp') center/cover no-repeat;
            min-height: 680px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

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

        .hero-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 48px;
            align-items: center;
        }

        .hero-badge {
            position: absolute;
            top: 110px;
            right: 30px;
            z-index: 3;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-radius: var(--radius-full);
            padding: 10px 20px;
            font-size: 13px;
            font-weight: 600;
            color: var(--text);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .hero-badge .dot {
            width: 8px;
            height: 8px;
            background: #22C55E;
            border-radius: 50%;
            animation: pulse-dot 2s infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.6; transform: scale(1.4); }
        }

        .hero h1 {
            font-size: 40px;
            font-weight: 700;
            color: #ffffff;
            line-height: 1.3;
            margin-bottom: 20px;
            letter-spacing: 1px;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
        }

        .hero-subtitle {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.9);
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 560px;
            text-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 28px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-md);
            transition: all var(--transition);
            border: none;
            cursor: pointer;
            text-decoration: none;
            line-height: 1.4;
        }

        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .btn:active {
            transform: scale(0.98);
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
        }

        .btn-secondary {
            background: #fff;
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        .btn-secondary:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.15);
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            color: #fff;
            box-shadow: var(--shadow-accent);
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 16px;
            border-radius: var(--radius-lg);
        }

        .hero-visual {
            background: rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-radius: var(--radius-xl);
            border: 1px solid rgba(255, 255, 255, 0.18);
            padding: 24px;
            aspect-ratio: 3 / 4.2;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            max-width: 360px;
            margin: 0 auto;
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.25);
        }

        .hero-visual-label {
            font-size: 12px;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.7);
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 8px;
        }

        .hero-visual h3 {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 4px;
        }

        .hero-visual p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 16px;
        }

        .hero-match-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
            gap: 8px;
        }

        .hero-match-row:last-child {
            border-bottom: none;
        }

        .hero-match-teams {
            font-size: 13px;
            font-weight: 600;
            color: #fff;
            flex: 1;
        }

        .hero-match-odds {
            font-size: 13px;
            font-weight: 700;
            color: var(--accent);
            background: rgba(245, 158, 11, 0.2);
            padding: 4px 10px;
            border-radius: var(--radius-sm);
            white-space: nowrap;
        }

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

        section:nth-child(even):not(.hero):not(.cta-section) {
            background: var(--white);
        }

        section:nth-child(odd):not(.hero):not(.cta-section) {
            background: var(--bg);
        }

        .section-header {
            margin-bottom: 48px;
        }

        .section-tag {
            display: inline-block;
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            border-radius: var(--radius-full);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .section-header h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.35;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .section-header p {
            font-size: 15px;
            color: var(--text-muted);
            max-width: 720px;
            line-height: 1.8;
        }

        /* ===== 数据速览条 ===== */
        .data-strip {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 16px;
            overflow-x: auto;
            padding-bottom: 8px;
            -webkit-overflow-scrolling: touch;
        }

        .data-strip-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 20px 18px;
            min-width: 180px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            text-align: center;
        }

        .data-strip-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }

        .data-strip-card .match-name {
            font-size: 13px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .data-strip-card .odds {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 6px;
        }

        .data-strip-card .time {
            font-size: 12px;
            color: var(--text-muted);
        }

        .data-strip-card .live-tag {
            display: inline-block;
            padding: 2px 8px;
            font-size: 11px;
            font-weight: 600;
            color: #fff;
            background: #22C55E;
            border-radius: var(--radius-sm);
            margin-bottom: 6px;
        }

        /* ===== 卖点三连 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--gap);
        }

        .feature-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            text-align: left;
        }

        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: rgba(37, 99, 235, 0.25);
        }

        .feature-icon {
            width: 48px;
            height: 48px;
            background: var(--primary-light);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            margin-bottom: 16px;
        }

        .feature-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 10px;
        }

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

        /* ===== 场景演示 ===== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--gap);
        }

        .scenario-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

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

        .scenario-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }

        .scenario-body {
            padding: 22px 24px;
        }

        .scenario-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
        }

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

        /* ===== 数据服务板块 ===== */
        .service-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .service-text h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
        }

        .service-text p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .service-list {
            list-style: none;
            margin-top: 16px;
        }

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

        .service-list li::before {
            content: "✓";
            color: var(--primary);
            font-weight: 700;
            font-size: 14px;
            flex-shrink: 0;
        }

        .service-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }

        .service-image img {
            width: 100%;
            height: 380px;
            object-fit: cover;
            display: block;
        }

        /* ===== 赛事覆盖 ===== */
        .tournament-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--gap);
        }

        .tournament-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

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

        .tournament-card img {
            width: 100%;
            height: 160px;
            object-fit: cover;
            display: block;
        }

        .tournament-body {
            padding: 18px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
        }

        .tournament-body h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
        }

        .badge {
            display: inline-block;
            padding: 4px 10px;
            font-size: 12px;
            font-weight: 500;
            border-radius: var(--radius-sm);
            white-space: nowrap;
        }

        .badge-blue {
            background: var(--primary-light);
            color: var(--primary);
        }

        .badge-orange {
            background: var(--accent-light);
            color: var(--accent-dark);
        }

        /* ===== 社会认同 ===== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--gap);
        }

        .testimonial-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            position: relative;
            transition: all var(--transition);
        }

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

        .testimonial-card::before {
            content: "\201C";
            font-size: 48px;
            color: rgba(37, 99, 235, 0.2);
            position: absolute;
            top: 16px;
            left: 20px;
            line-height: 1;
            font-family: Georgia, serif;
        }

        .testimonial-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
            padding-top: 16px;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
        }

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

        .rating {
            color: var(--accent);
            font-size: 14px;
            letter-spacing: 2px;
        }

        /* ===== 对比差异 ===== */
        .comparison-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
        }

        .comparison-table th,
        .comparison-table td {
            padding: 16px 20px;
            text-align: center;
            border-bottom: 1px solid var(--border-light);
        }

        .comparison-table th {
            background: var(--bg);
            font-weight: 600;
            color: var(--text);
            font-size: 14px;
        }

        .comparison-table td:first-child,
        .comparison-table th:first-child {
            text-align: left;
            font-weight: 500;
            color: var(--text-secondary);
        }

        .comparison-table .highlight-col {
            background: var(--primary-light);
            position: relative;
        }

        .comparison-table .highlight-col::before {
            content: "推荐";
            position: absolute;
            top: -12px;
            right: 12px;
            background: var(--accent);
            color: #fff;
            font-size: 11px;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: var(--radius-sm);
        }

        .comparison-table .check {
            color: #22C55E;
            font-weight: 700;
        }

        .comparison-table .cross {
            color: #EF4444;
            font-weight: 700;
        }

        .comparison-table .partial {
            color: var(--accent);
            font-weight: 600;
        }

        /* ===== 资讯证据 ===== */
        .evidence-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--gap);
        }

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

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

        .evidence-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        .evidence-body {
            padding: 20px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .evidence-date {
            font-size: 12px;
            color: var(--text-muted);
            font-weight: 500;
            margin-bottom: 6px;
        }

        .evidence-body h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
        }

        .evidence-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 12px;
            flex: 1;
        }

        .evidence-source {
            font-size: 12px;
            color: var(--text-light);
        }

        /* ===== FAQ ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 820px;
            margin: 0 auto;
        }

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

        .faq-item.open {
            border-color: rgba(37, 99, 235, 0.3);
            box-shadow: var(--shadow-lg);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 500;
            color: var(--text);
            transition: all var(--transition);
            width: 100%;
            text-align: left;
            background: none;
            border: none;
            font-family: var(--font-family);
        }

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

        .faq-question .arrow {
            font-size: 18px;
            color: var(--text-muted);
            transition: transform var(--transition);
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.25s ease;
            padding: 0 24px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
            background: var(--primary-light);
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ===== 品牌介绍 ===== */
        .brand-intro {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 48px;
            box-shadow: var(--shadow-md);
            max-width: 900px;
            margin: 0 auto;
            text-align: center;
            border: 1px solid var(--border);
        }

        .brand-intro h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 20px;
        }

        .brand-intro p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.9;
            text-align: left;
        }

        /* ===== 新闻中心 ===== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .news-card {
            display: flex;
            gap: 24px;
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 20px 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            align-items: flex-start;
        }

        .news-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: rgba(37, 99, 235, 0.25);
        }

        .news-card img {
            width: 160px;
            height: 100px;
            object-fit: cover;
            border-radius: var(--radius-md);
            flex-shrink: 0;
        }

        .news-content {
            flex: 1;
        }

        .news-date {
            font-size: 12px;
            color: var(--text-muted);
            font-weight: 500;
            margin-bottom: 4px;
        }

        .news-content h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
        }

        .news-content p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 8px;
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            background: var(--primary-light);
            color: var(--primary);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            display: inline-block;
            text-decoration: none;
        }

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

        /* ===== 保障条 ===== */
        .safety-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--gap);
        }

        .safety-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

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

        .safety-icon {
            width: 52px;
            height: 52px;
            background: var(--primary-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--primary);
            margin: 0 auto 14px;
        }

        .safety-card h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
        }

        .safety-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== CTA 转化区 ===== */
        .cta-section {
            background: linear-gradient(135deg, #2563EB 0%, #1D4ED8 50%, #1E40AF 100%);
            padding: 72px 0;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 30px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .cta-section p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 640px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }

        /* ===== 底部固定转化条 ===== */
        .bottom-bar {
            position: fixed;
            bottom: 16px;
            left: 50%;
            transform: translateX(-50%);
            width: calc(100% - 40px);
            max-width: 1100px;
            z-index: 900;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-radius: var(--radius-xl);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 24px;
            gap: 16px;
            border: 1px solid rgba(229, 231, 235, 0.8);
        }

        .bottom-bar-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
        }

        .bottom-bar-title strong {
            color: var(--primary);
        }

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

        .btn-bar {
            padding: 10px 22px;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-full);
            background: var(--accent);
            color: #fff;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
            text-decoration: none;
        }

        .btn-bar:hover {
            background: var(--accent-dark);
            color: #fff;
            box-shadow: var(--shadow-accent);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--footer-bg);
            color: var(--footer-text);
            padding: 64px 0 32px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.4fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand h3 {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 13px;
            color: var(--footer-muted);
            line-height: 1.7;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

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

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

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

        .footer-col ul li a:hover {
            color: #fff;
            text-decoration: underline dashed;
            text-underline-offset: 4px;
        }

        .footer-subscribe p {
            font-size: 13px;
            color: var(--footer-muted);
            margin-bottom: 12px;
            line-height: 1.6;
        }

        .footer-subscribe-form {
            display: flex;
            gap: 8px;
        }

        .footer-subscribe-form input {
            flex: 1;
            padding: 10px 16px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-md);
            color: #fff;
            font-size: 13px;
            outline: none;
            transition: all var(--transition);
        }

        .footer-subscribe-form input::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-subscribe-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.3);
        }

        .footer-subscribe-form button {
            padding: 10px 18px;
            background: var(--primary);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            border-radius: var(--radius-md);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
        }

        .footer-subscribe-form button:hover {
            background: var(--primary-dark);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: var(--footer-muted);
        }

        .footer-bottom a {
            color: var(--footer-muted);
            transition: all var(--transition);
            text-decoration: none;
        }

        .footer-bottom a:hover {
            color: #fff;
            text-decoration: underline dashed;
            text-underline-offset: 4px;
        }

        .footer-bottom-links {
            display: flex;
            gap: 16px;
            align-items: center;
            flex-wrap: wrap;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero {
                min-height: 560px;
                padding: 120px 0 60px;
            }
            .hero h1 {
                font-size: 32px;
            }
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-visual {
                max-width: 300px;
                aspect-ratio: 3 / 4;
                margin: 0 auto;
            }
            .hero-badge {
                position: static;
                margin-bottom: 16px;
                display: inline-flex;
            }
            .features-grid,
            .scenario-grid,
            .tournament-grid,
            .safety-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .data-strip {
                grid-template-columns: repeat(3, 1fr);
            }
            .service-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .service-image img {
                height: 280px;
            }
            .testimonial-grid,
            .evidence-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-pad: 48px;
            }
            body {
                padding-bottom: 72px;
            }
            .site-header {
                top: 10px;
                width: calc(100% - 24px);
            }
            .header-inner {
                padding: 6px 14px;
            }
            .main-nav {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-nav {
                display: none;
            }
            .mobile-nav.open {
                display: flex;
            }
            .hero {
                padding: 110px 0 48px;
                min-height: auto;
            }
            .hero h1 {
                font-size: 26px;
                letter-spacing: 0;
            }
            .hero-subtitle {
                font-size: 14px;
            }
            .hero-actions {
                flex-direction: column;
                gap: 12px;
            }
            .hero-actions .btn {
                width: 100%;
                text-align: center;
            }
            .hero-visual {
                max-width: 260px;
                padding: 16px;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .data-strip {
                grid-template-columns: repeat(2, 1fr);
            }
            .features-grid,
            .scenario-grid,
            .tournament-grid,
            .safety-grid {
                grid-template-columns: 1fr;
            }
            .comparison-table {
                font-size: 12px;
            }
            .comparison-table th,
            .comparison-table td {
                padding: 12px 10px;
            }
            .news-card {
                flex-direction: column;
                gap: 12px;
                padding: 16px;
            }
            .news-card img {
                width: 100%;
                height: 160px;
            }
            .brand-intro {
                padding: 24px 20px;
            }
            .brand-intro p {
                font-size: 14px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .bottom-bar {
                bottom: 10px;
                width: calc(100% - 24px);
                padding: 12px 16px;
                border-radius: var(--radius-lg);
                flex-direction: row;
            }
            .bottom-bar-title {
                font-size: 12px;
                flex: 1;
            }
            .btn-bar {
                padding: 8px 14px;
                font-size: 12px;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 22px;
            }
            .section-header h2 {
                font-size: 20px;
            }
            .data-strip {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .data-strip-card {
                min-width: 0;
                padding: 14px 12px;
            }
            .data-strip-card .odds {
                font-size: 16px;
            }
            .comparison-table {
                font-size: 11px;
            }
            .comparison-table th,
            .comparison-table td {
                padding: 8px 6px;
            }
            .faq-question {
                font-size: 14px;
                padding: 14px 16px;
            }
            .faq-answer p {
                font-size: 13px;
            }
            .bottom-bar {
                flex-direction: column;
                align-items: stretch;
                text-align: center;
                gap: 8px;
                border-radius: var(--radius-lg);
            }
            .bottom-bar-title {
                font-size: 13px;
                text-align: center;
            }
            .bottom-bar-actions {
                justify-content: center;
            }
            .btn-bar {
                width: 100%;
                text-align: center;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-bottom-links {
                justify-content: center;
            }
            .hero-visual {
                max-width: 220px;
                padding: 12px;
            }
            .hero-visual h3 {
                font-size: 15px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #2563EB;
            --primary-dark: #1D4ED8;
            --primary-light: #EFF6FF;
            --accent: #F59E0B;
            --accent-dark: #D97706;
            --accent-light: #FFF7E6;
            --bg: #F8FAFC;
            --white: #FFFFFF;
            --text: #0F172A;
            --text-secondary: #475569;
            --text-muted: #64748B;
            --text-light: #94A3B8;
            --border: #E5E7EB;
            --border-light: #F1F5F9;
            --footer-bg: #1E293B;
            --footer-text: #CBD5E1;
            --footer-muted: #94A3B8;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 20px;
            --radius-full: 999px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 24px rgba(37, 99, 235, 0.12);
            --shadow-accent: 0 8px 24px rgba(245, 158, 11, 0.18);
            --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --container-max: 1200px;
            --section-pad: 72px;
            --section-pad-mobile: 48px;
            --gap: 24px;
            --gap-sm: 16px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            min-height: 100vh;
            padding-bottom: 20px;
        }

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

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

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

        button {
            font-family: var(--font-family);
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
            transition: all var(--transition);
        }

        input,
        select {
            font-family: var(--font-family);
            font-size: 14px;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ===== 顶部导航 ===== */
        .site-header {
            position: fixed;
            top: 16px;
            left: 50%;
            transform: translateX(-50%);
            width: calc(100% - 40px);
            max-width: 1180px;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-radius: var(--radius-full);
            border: 1px solid rgba(229, 231, 235, 0.8);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
            transition: box-shadow var(--transition), background var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
            background: rgba(255, 255, 255, 0.97);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 8px 20px;
            gap: 16px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            text-decoration: none;
            color: var(--text);
        }

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

        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

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

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
        }

        .main-nav li a {
            display: inline-block;
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-full);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .main-nav li a:hover {
            color: var(--primary);
            background: rgba(37, 99, 235, 0.08);
        }

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

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
            background: transparent;
            border: none;
            cursor: pointer;
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all var(--transition);
        }

        /* ===== 面包屑 + 标题区 ===== */
        .page-header {
            padding: 140px 0 48px;
            background: var(--white);
            border-bottom: 1px solid var(--border-light);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

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

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

        .breadcrumb .separator {
            color: var(--text-light);
            font-size: 12px;
        }

        .breadcrumb .current {
            color: var(--text-secondary);
            font-weight: 500;
        }

        .page-header h1 {
            font-size: 34px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.3;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .page-header .page-desc {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 800px;
        }

        /* ===== 筛选工具条 ===== */
        .filter-toolbar {
            padding: 24px 0 8px;
            background: var(--bg);
        }

        .filter-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 14px 18px;
            box-shadow: var(--shadow-sm);
        }

        .filter-select-group {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

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

        .filter-select-group select {
            padding: 8px 32px 8px 14px;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            background: var(--white);
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748B' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 12px center;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .filter-select-group select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
        }

        .sort-buttons {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }

        .sort-btn {
            padding: 8px 18px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-muted);
            background: var(--bg);
            border-radius: var(--radius-full);
            border: 1px solid transparent;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .sort-btn:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

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

        .sort-btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* ===== 列表卡片主体 ===== */
        .content-list-section {
            padding: 32px 0 40px;
            background: var(--bg);
        }

        .content-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--gap);
        }

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

        .content-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: rgba(37, 99, 235, 0.3);
        }

        .content-card .card-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            background: var(--border-light);
        }

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

        .content-card .card-tag {
            display: inline-block;
            padding: 3px 10px;
            font-size: 12px;
            font-weight: 500;
            color: var(--primary);
            background: var(--primary-light);
            border-radius: var(--radius-sm);
            margin-bottom: 10px;
            align-self: flex-start;
        }

        .content-card .card-tag.accent {
            color: var(--accent-dark);
            background: var(--accent-light);
        }

        .content-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
            margin-bottom: 8px;
        }

        .content-card .card-summary {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 12px;
        }

        .content-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: var(--text-light);
            font-weight: 500;
            border-top: 1px solid var(--border-light);
            padding-top: 12px;
        }

        .content-card .card-meta .date {
            color: var(--text-muted);
        }

        .content-card .card-meta .badge {
            padding: 3px 10px;
            border-radius: var(--radius-sm);
            font-size: 12px;
            font-weight: 500;
            background: var(--accent-light);
            color: var(--accent-dark);
        }

        /* ===== 热点专题支撑板块 ===== */
        .topics-section {
            padding: 48px 0;
            background: var(--white);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .section-title {
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
            letter-spacing: 0.3px;
        }

        .section-subtitle {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .topics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--gap-sm);
        }

        .topic-card {
            background: var(--bg);
            border-radius: var(--radius-md);
            padding: 18px 16px;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .topic-card:hover {
            border-color: var(--primary);
            background: var(--primary-light);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .topic-card .topic-icon {
            font-size: 22px;
        }

        .topic-card .topic-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.4;
        }

        .topic-card .topic-count {
            font-size: 12px;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ===== 数据速览支撑板块 ===== */
        .stats-support-section {
            padding: 48px 0;
            background: var(--bg);
        }

        .stats-support-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--gap-sm);
        }

        .stat-support-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 20px 18px;
            text-align: center;
            transition: all var(--transition);
        }

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

        .stat-support-card .stat-num {
            font-size: 30px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .stat-support-card .stat-num.accent {
            color: var(--accent);
        }

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

        /* ===== 订阅CTA支撑板块 ===== */
        .subscribe-section {
            padding: 56px 0;
            background: var(--white);
            border-top: 1px solid var(--border-light);
        }

        .subscribe-wrap {
            background: var(--primary);
            border-radius: var(--radius-xl);
            padding: 44px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            position: relative;
            overflow: hidden;
        }

        .subscribe-wrap::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
            pointer-events: none;
        }

        .subscribe-wrap::after {
            content: '';
            position: absolute;
            bottom: -50%;
            left: 10%;
            width: 300px;
            height: 300px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 50%;
            pointer-events: none;
        }

        .subscribe-info {
            flex: 1;
            min-width: 280px;
            position: relative;
            z-index: 1;
        }

        .subscribe-info h2 {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .subscribe-info p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
            max-width: 480px;
        }

        .subscribe-form {
            display: flex;
            gap: 10px;
            flex-shrink: 0;
            position: relative;
            z-index: 1;
            flex-wrap: wrap;
        }

        .subscribe-form input {
            padding: 12px 18px;
            border: 1px solid rgba(255, 255, 255, 0.4);
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            font-size: 14px;
            width: 260px;
            transition: all var(--transition);
        }

        .subscribe-form input::placeholder {
            color: rgba(255, 255, 255, 0.7);
        }

        .subscribe-form input:focus {
            outline: none;
            border-color: #fff;
            background: rgba(255, 255, 255, 0.25);
            box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.3);
        }

        .subscribe-form button {
            padding: 12px 28px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            background: #fff;
            border-radius: var(--radius-md);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .subscribe-form button:hover {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.4);
        }

        .subscribe-form button:focus-visible {
            outline: 2px solid #fff;
            outline-offset: 2px;
        }

        /* ===== 查看更多按钮 ===== */
        .load-more-section {
            padding: 32px 0 48px;
            background: var(--bg);
            text-align: center;
        }

        .load-more-btn {
            display: inline-block;
            padding: 14px 40px;
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
            background: var(--white);
            border: 2px solid var(--primary);
            border-radius: var(--radius-full);
            transition: all var(--transition);
        }

        .load-more-btn:hover {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-lg);
            transform: translateY(-1px);
        }

        .load-more-btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        .load-more-btn:active {
            transform: scale(0.98);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--footer-bg);
            color: var(--footer-text);
            padding: 56px 0 28px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.4fr;
            gap: 32px;
            margin-bottom: 36px;
        }

        .footer-brand h3 {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 13px;
            color: var(--footer-muted);
            line-height: 1.7;
            max-width: 260px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
        }

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

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

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

        .footer-subscribe h4 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 8px;
        }

        .footer-subscribe p {
            font-size: 13px;
            color: var(--footer-muted);
            margin-bottom: 12px;
            line-height: 1.6;
        }

        .footer-subscribe-form {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .footer-subscribe-form input {
            padding: 10px 14px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            font-size: 13px;
            flex: 1;
            min-width: 160px;
            transition: all var(--transition);
        }

        .footer-subscribe-form input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-subscribe-form input:focus {
            outline: none;
            border-color: var(--primary);
            background: rgba(255, 255, 255, 0.15);
        }

        .footer-subscribe-form button {
            padding: 10px 20px;
            font-size: 13px;
            font-weight: 600;
            color: #fff;
            background: var(--primary);
            border-radius: var(--radius-md);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .footer-subscribe-form button:hover {
            background: var(--primary-dark);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            font-size: 12px;
            color: var(--footer-muted);
        }

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

        .footer-bottom-links a {
            color: var(--footer-muted);
            transition: color var(--transition);
            text-decoration: none;
        }

        .footer-bottom-links a:hover {
            color: #fff;
            text-decoration: underline dotted;
        }

        .footer-bottom-links span {
            color: rgba(255, 255, 255, 0.3);
        }

        /* ===== 响应式断点 ===== */
        @media (max-width: 1024px) {
            .content-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .topics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-support-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                top: 10px;
                width: calc(100% - 20px);
                border-radius: var(--radius-lg);
            }
            .header-inner {
                padding: 10px 16px;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: calc(100% + 8px);
                left: 0;
                right: 0;
                background: var(--white);
                border-radius: var(--radius-lg);
                border: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                padding: 12px;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav li a {
                display: block;
                padding: 12px 16px;
                text-align: center;
                border-radius: var(--radius-md);
            }
            .hamburger {
                display: flex;
            }
            .page-header {
                padding: 120px 0 36px;
            }
            .page-header h1 {
                font-size: 26px;
            }
            .content-grid {
                grid-template-columns: 1fr;
                gap: var(--gap-sm);
            }
            .topics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-support-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .subscribe-wrap {
                padding: 32px 24px;
                flex-direction: column;
                text-align: center;
            }
            .subscribe-info p {
                margin: 0 auto;
            }
            .subscribe-form {
                width: 100%;
                justify-content: center;
            }
            .subscribe-form input {
                width: 100%;
                max-width: 360px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-bottom-links {
                justify-content: center;
            }
            .filter-inner {
                flex-direction: column;
                align-items: stretch;
            }
            .sort-buttons {
                justify-content: flex-start;
            }
            :root {
                --section-pad: 48px;
            }
        }

        @media (max-width: 520px) {
            .logo-text {
                font-size: 15px;
            }
            .topics-grid {
                grid-template-columns: 1fr;
            }
            .stats-support-grid {
                grid-template-columns: 1fr;
            }
            .content-card .card-body {
                padding: 14px 16px 16px;
            }
            .subscribe-form {
                flex-direction: column;
                align-items: center;
            }
            .subscribe-form button {
                width: 100%;
                max-width: 360px;
            }
            .load-more-btn {
                padding: 12px 28px;
                font-size: 14px;
                width: 100%;
                text-align: center;
            }
        }

/* roulang page: category2 */
:root {
      --primary: #2563EB;
      --primary-dark: #1D4ED8;
      --primary-light: #EFF6FF;
      --accent: #F59E0B;
      --accent-dark: #D97706;
      --accent-light: #FFF7E6;
      --bg: #F8FAFC;
      --white: #FFFFFF;
      --text: #0F172A;
      --text-secondary: #475569;
      --text-muted: #64748B;
      --text-light: #94A3B8;
      --border: #E5E7EB;
      --border-light: #F1F5F9;
      --footer-bg: #1E293B;
      --footer-text: #CBD5E1;
      --footer-muted: #94A3B8;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 14px;
      --radius-xl: 20px;
      --radius-full: 999px;
      --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
      --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
      --shadow-lg: 0 8px 24px rgba(37, 99, 235, 0.12);
      --shadow-accent: 0 8px 24px rgba(245, 158, 11, 0.18);
      --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
      --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      --container-max: 1200px;
      --section-pad: 72px;
      --section-pad-mobile: 48px;
      --gap: 24px;
      --gap-sm: 16px;
    }

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

    html {
      scroll-behavior: smooth;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

    body {
      font-family: var(--font-family);
      font-size: 16px;
      line-height: 1.7;
      color: var(--text);
      background-color: var(--bg);
      padding-bottom: 0;
      min-height: 100vh;
    }

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

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

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

    button {
      font-family: var(--font-family);
      cursor: pointer;
      border: none;
      background: none;
      font-size: inherit;
    }

    input,
    select {
      font-family: var(--font-family);
      font-size: 14px;
    }

    .container {
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 20px;
    }

    /* ===== 顶部导航 ===== */
    .site-header {
      position: fixed;
      top: 16px;
      left: 50%;
      transform: translateX(-50%);
      width: calc(100% - 40px);
      max-width: 1180px;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-radius: var(--radius-full);
      border: 1px solid rgba(229, 231, 235, 0.8);
      transition: box-shadow var(--transition), background var(--transition);
    }

    .site-header.scrolled {
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
      background: rgba(255, 255, 255, 0.96);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 8px 20px;
      gap: 16px;
    }

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

    .logo-icon {
      width: 36px;
      height: 36px;
      background: var(--primary);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 18px;
      font-weight: 700;
      letter-spacing: 0;
      flex-shrink: 0;
    }

    .logo-text {
      font-size: 17px;
      font-weight: 700;
      color: var(--text);
      letter-spacing: 0.5px;
      white-space: nowrap;
    }

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

    .main-nav {
      display: flex;
      align-items: center;
      gap: 4px;
      list-style: none;
    }

    .main-nav li a {
      display: inline-block;
      padding: 8px 16px;
      font-size: 14px;
      font-weight: 500;
      color: var(--text-secondary);
      border-radius: var(--radius-full);
      transition: all var(--transition);
      white-space: nowrap;
    }

    .main-nav li a:hover {
      color: var(--primary);
      background: rgba(37, 99, 235, 0.08);
    }

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

    .nav-cta {
      display: inline-block;
      padding: 8px 20px;
      font-size: 14px;
      font-weight: 600;
      color: #fff;
      background: var(--primary);
      border-radius: var(--radius-full);
      transition: all var(--transition);
      white-space: nowrap;
      flex-shrink: 0;
    }

    .nav-cta:hover {
      background: var(--primary-dark);
      color: #fff;
      box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    }

    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      padding: 8px;
      border-radius: var(--radius-sm);
      background: transparent;
      border: none;
      cursor: pointer;
    }

    .hamburger span {
      display: block;
      width: 22px;
      height: 2px;
      background: var(--text);
      border-radius: 2px;
      transition: all var(--transition);
    }

    .hamburger.open span:nth-child(1) {
      transform: translateY(7px) rotate(45deg);
    }

    .hamburger.open span:nth-child(2) {
      opacity: 0;
    }

    .hamburger.open span:nth-child(3) {
      transform: translateY(-7px) rotate(-45deg);
    }

    /* ===== 面包屑 ===== */
    .breadcrumb-section {
      padding-top: 120px;
      padding-bottom: 24px;
      background: var(--white);
      border-bottom: 1px solid var(--border-light);
    }

    .breadcrumb {
      font-size: 13px;
      color: var(--text-muted);
      display: flex;
      align-items: center;
      gap: 8px;
    }

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

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

    .breadcrumb .sep {
      color: var(--text-light);
      user-select: none;
    }

    .breadcrumb .current {
      color: var(--text);
      font-weight: 500;
    }

    /* ===== 分类页头部 ===== */
    .category-header {
      padding: 32px 0 40px;
      background: var(--white);
    }

    .category-header-inner {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .category-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 12px;
      background: var(--primary-light);
      color: var(--primary);
      border-radius: var(--radius-full);
      font-size: 13px;
      font-weight: 500;
      align-self: flex-start;
    }

    .category-header h1 {
      font-size: 32px;
      font-weight: 700;
      line-height: 1.3;
      color: var(--text);
    }

    .category-header .category-desc {
      font-size: 15px;
      color: var(--text-secondary);
      line-height: 1.8;
      max-width: 760px;
    }

    .category-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 13px;
      color: var(--text-muted);
    }

    .category-meta span {
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* ===== 筛选/排序工具条 ===== */
    .filter-section {
      padding: 24px 0;
      background: var(--bg);
    }

    .filter-bar {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      background: var(--white);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 16px 20px;
      box-shadow: var(--shadow-sm);
    }

    .filter-left {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 12px;
    }

    .filter-select {
      padding: 8px 32px 8px 12px;
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      background: var(--white);
      color: var(--text-secondary);
      font-size: 14px;
      cursor: pointer;
      appearance: none;
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748B' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
      background-repeat: no-repeat;
      background-position: right 12px center;
      transition: border-color var(--transition), box-shadow var(--transition);
    }

    .filter-select:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
    }

    .sort-buttons {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .sort-btn {
      padding: 8px 18px;
      border-radius: var(--radius-full);
      font-size: 13px;
      font-weight: 500;
      color: var(--text-secondary);
      background: var(--bg);
      border: 1px solid var(--border);
      transition: all var(--transition);
      cursor: pointer;
    }

    .sort-btn:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: var(--primary-light);
    }

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

    .sort-btn:focus-visible,
    .filter-select:focus-visible {
      outline: 2px solid var(--primary);
      outline-offset: 2px;
    }

    /* ===== 列表卡片主体 ===== */
    .strategy-list-section {
      padding: 40px 0 64px;
      background: var(--bg);
    }

    .strategy-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: var(--gap);
    }

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

    .strategy-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-2px);
      border-color: rgba(37, 99, 235, 0.25);
    }

    .strategy-card-img {
      width: 100%;
      aspect-ratio: 16/9;
      overflow: hidden;
      position: relative;
      background: var(--border-light);
    }

    .strategy-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 300ms ease;
    }

    .strategy-card:hover .strategy-card-img img {
      transform: scale(1.03);
    }

    .strategy-card-body {
      padding: 20px 20px 18px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      flex: 1;
    }

    .strategy-card-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }

    .badge {
      display: inline-block;
      padding: 3px 10px;
      border-radius: var(--radius-sm);
      font-size: 12px;
      font-weight: 500;
      line-height: 1.5;
    }

    .badge-blue {
      background: var(--primary-light);
      color: var(--primary);
    }

    .badge-amber {
      background: var(--accent-light);
      color: var(--accent-dark);
    }

    .badge-gray {
      background: #F1F5F9;
      color: var(--text-muted);
    }

    .strategy-card-title {
      font-size: 16px;
      font-weight: 600;
      line-height: 1.5;
      color: var(--text);
      margin-top: 2px;
    }

    .strategy-card-title a {
      color: var(--text);
      transition: color var(--transition);
    }

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

    .strategy-card-summary {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      flex: 1;
    }

    .strategy-card-footer {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 13px;
      color: var(--text-light);
      padding-top: 12px;
      border-top: 1px solid var(--border-light);
    }

    .strategy-card-date {
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    .strategy-card-link {
      font-size: 13px;
      font-weight: 500;
      color: var(--primary);
      transition: color var(--transition);
    }

    .strategy-card-link:hover {
      color: var(--primary-dark);
    }

    /* ===== 热点专题支撑板块 ===== */
    .topics-section {
      padding: var(--section-pad) 0;
      background: var(--white);
    }

    .topics-header {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      margin-bottom: 28px;
      flex-wrap: wrap;
      gap: 16px;
    }

    .topics-header h2,
    .overview-section h2,
    .subscribe-section h2,
    .faq-section h2 {
      font-size: 26px;
      font-weight: 700;
      color: var(--text);
      line-height: 1.4;
    }

    .topics-header .subtitle {
      font-size: 14px;
      color: var(--text-muted);
    }

    .topics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: var(--gap-sm);
    }

    .topic-card {
      display: flex;
      flex-direction: column;
      gap: 10px;
      padding: 20px;
      background: var(--bg);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-light);
      transition: all var(--transition);
      text-decoration: none;
    }

    .topic-card:hover {
      border-color: rgba(37, 99, 235, 0.25);
      box-shadow: var(--shadow-sm);
      transform: translateY(-2px);
      background: var(--primary-light);
    }

    .topic-card-icon {
      width: 40px;
      height: 40px;
      border-radius: 10px;
      background: var(--primary);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      font-weight: 700;
    }

    .topic-card h3 {
      font-size: 15px;
      font-weight: 600;
      color: var(--text);
      line-height: 1.4;
    }

    .topic-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      flex: 1;
    }

    .topic-card .topic-link-text {
      font-size: 13px;
      font-weight: 500;
      color: var(--primary);
    }

    /* ===== 数据速览支撑板块 ===== */
    .overview-section {
      padding: var(--section-pad) 0;
      background: var(--bg);
    }

    .overview-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 24px;
      flex-wrap: wrap;
      gap: 16px;
    }

    .overview-header .badge-group {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
    }

    .overview-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: var(--gap-sm);
    }

    .data-metric-card {
      background: var(--white);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border);
      padding: 20px;
      transition: all var(--transition);
      box-shadow: var(--shadow-sm);
    }

    .data-metric-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-2px);
    }

    .data-metric-label {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 8px;
    }

    .data-metric-value {
      font-size: 28px;
      font-weight: 700;
      color: var(--text);
      line-height: 1.2;
      margin-bottom: 4px;
    }

    .data-metric-value.blue {
      color: var(--primary);
    }

    .data-metric-value.amber {
      color: var(--accent-dark);
    }

    .data-metric-change {
      font-size: 13px;
      font-weight: 500;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    .data-metric-change.up {
      color: #16A34A;
    }

    .data-metric-change.down {
      color: #DC2626;
    }

    /* ===== 订阅CTA支撑板块 ===== */
    .subscribe-section {
      padding: var(--section-pad) 0;
      background: var(--white);
    }

    .subscribe-card {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 32px;
      align-items: center;
      background: var(--primary-light);
      border-radius: var(--radius-xl);
      padding: 40px;
      border: 1px solid rgba(37, 99, 235, 0.12);
    }

    .subscribe-left h2 {
      margin-bottom: 12px;
    }

    .subscribe-left p {
      font-size: 15px;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    .subscribe-form {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .subscribe-form input {
      padding: 12px 16px;
      border: 1px solid #CBD5E1;
      border-radius: var(--radius-md);
      font-size: 14px;
      background: var(--white);
      transition: border-color var(--transition), box-shadow var(--transition);
      width: 100%;
    }

    .subscribe-form input:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
    }

    .subscribe-form button {
      padding: 12px 24px;
      background: var(--primary);
      color: #fff;
      font-weight: 600;
      font-size: 15px;
      border-radius: var(--radius-md);
      transition: all var(--transition);
      cursor: pointer;
      border: none;
    }

    .subscribe-form button:hover {
      background: var(--primary-dark);
      box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    }

    .subscribe-form button:focus-visible {
      outline: 2px solid var(--primary-dark);
      outline-offset: 2px;
    }

    .subscribe-form button:active {
      transform: scale(0.98);
    }

    .subscribe-form .form-note {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* ===== 查看更多按钮 ===== */
    .load-more-section {
      padding: 24px 0 48px;
      background: var(--bg);
      text-align: center;
    }

    .load-more-btn {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 14px 36px;
      font-size: 15px;
      font-weight: 600;
      color: var(--primary);
      background: var(--white);
      border: 2px solid var(--primary);
      border-radius: var(--radius-full);
      transition: all var(--transition);
      cursor: pointer;
    }

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

    .load-more-btn:focus-visible {
      outline: 2px solid var(--primary-dark);
      outline-offset: 2px;
    }

    .load-more-btn:active {
      transform: scale(0.98);
    }

    /* ===== FAQ板块 ===== */
    .faq-section {
      padding: var(--section-pad) 0;
      background: var(--white);
    }

    .faq-header {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      margin-bottom: 24px;
      flex-wrap: wrap;
      gap: 16px;
    }

    .faq-header .faq-note {
      font-size: 14px;
      color: var(--text-muted);
    }

    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
      max-width: 800px;
    }

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

    .faq-item.active {
      background: var(--primary-light);
      border-color: rgba(37, 99, 235, 0.25);
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 16px 20px;
      cursor: pointer;
      font-size: 16px;
      font-weight: 500;
      color: var(--text);
      transition: color var(--transition);
      width: 100%;
      text-align: left;
      background: transparent;
      border: none;
      gap: 12px;
    }

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

    .faq-question .faq-arrow {
      width: 20px;
      height: 20px;
      flex-shrink: 0;
      transition: transform var(--transition);
      color: var(--text-muted);
    }

    .faq-item.active .faq-arrow {
      transform: rotate(180deg);
      color: var(--primary);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 300ms ease-out;
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.7;
      padding: 0 20px;
    }

    .faq-item.active .faq-answer {
      max-height: 200px;
      padding-bottom: 16px;
    }

    /* ===== 页脚 ===== */
    .site-footer {
      background: var(--footer-bg);
      color: var(--footer-text);
      padding: 56px 0 24px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 32px;
      margin-bottom: 32px;
    }

    .footer-brand h3 {
      font-size: 18px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 12px;
    }

    .footer-brand p {
      font-size: 14px;
      color: var(--footer-muted);
      line-height: 1.7;
    }

    .footer-col h4 {
      font-size: 14px;
      font-weight: 600;
      color: #fff;
      margin-bottom: 12px;
    }

    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .footer-col a,
    .footer-subscribe p {
      font-size: 14px;
      color: var(--footer-muted);
      transition: color var(--transition);
    }

    .footer-col a:hover {
      color: #fff;
      text-decoration: underline dotted;
    }

    .footer-subscribe h4 {
      font-size: 14px;
      font-weight: 600;
      color: #fff;
      margin-bottom: 8px;
    }

    .footer-subscribe p {
      margin-bottom: 12px;
      line-height: 1.6;
    }

    .footer-subscribe-form {
      display: flex;
      gap: 8px;
    }

    .footer-subscribe-form input {
      flex: 1;
      padding: 10px 14px;
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-md);
      background: rgba(255, 255, 255, 0.1);
      color: #fff;
      font-size: 14px;
      transition: border-color var(--transition);
    }

    .footer-subscribe-form input::placeholder {
      color: var(--footer-muted);
    }

    .footer-subscribe-form input:focus {
      outline: none;
      border-color: var(--primary);
    }

    .footer-subscribe-form button {
      padding: 10px 18px;
      background: var(--primary);
      color: #fff;
      font-weight: 600;
      border-radius: var(--radius-md);
      transition: all var(--transition);
      cursor: pointer;
      white-space: nowrap;
    }

    .footer-subscribe-form button:hover {
      background: var(--primary-dark);
    }

    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding-top: 20px;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      flex-wrap: wrap;
      gap: 12px;
      font-size: 13px;
      color: var(--footer-muted);
    }

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

    .footer-bottom-links a {
      color: var(--footer-muted);
      transition: color var(--transition);
    }

    .footer-bottom-links a:hover {
      color: #fff;
      text-decoration: underline dotted;
    }

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

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

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

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

      :root {
        --section-pad: 56px;
      }
    }

    @media (max-width: 768px) {
      .site-header {
        top: 8px;
        width: calc(100% - 24px);
      }

      .header-inner {
        padding: 8px 14px;
        gap: 8px;
      }

      .main-nav {
        display: none;
        position: absolute;
        top: 58px;
        left: 0;
        right: 0;
        background: var(--white);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-md);
        padding: 8px;
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        border: 1px solid var(--border);
      }

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

      .main-nav li a {
        display: block;
        text-align: center;
        padding: 12px 16px;
      }

      .hamburger {
        display: flex;
      }

      .nav-cta {
        padding: 8px 14px;
        font-size: 13px;
      }

      .breadcrumb-section {
        padding-top: 90px;
        padding-bottom: 16px;
      }

      .category-header h1 {
        font-size: 26px;
      }

      .category-header .category-desc {
        font-size: 14px;
      }

      .filter-bar {
        flex-direction: column;
        align-items: stretch;
      }

      .filter-left {
        flex-direction: column;
        align-items: stretch;
      }

      .sort-buttons {
        justify-content: center;
      }

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

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

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

      .subscribe-card {
        grid-template-columns: 1fr;
        padding: 24px;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
      }

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

      :root {
        --section-pad: 40px;
      }
    }

    @media (max-width: 520px) {
      .overview-grid {
        grid-template-columns: 1fr;
      }

      .filter-select {
        width: 100%;
      }

      .sort-btn {
        padding: 6px 12px;
        font-size: 12px;
      }

      .category-header h1 {
        font-size: 22px;
      }

      .subscribe-form button {
        width: 100%;
      }

      .breadcrumb {
        font-size: 12px;
        flex-wrap: wrap;
      }
    }

/* roulang page: category3 */
:root {
            --primary: #2563EB;
            --primary-dark: #1D4ED8;
            --primary-light: #EFF6FF;
            --accent: #F59E0B;
            --accent-dark: #D97706;
            --accent-light: #FFF7E6;
            --bg: #F8FAFC;
            --white: #FFFFFF;
            --text: #0F172A;
            --text-secondary: #475569;
            --text-muted: #64748B;
            --text-light: #94A3B8;
            --border: #E5E7EB;
            --border-light: #F1F5F9;
            --footer-bg: #1E293B;
            --footer-text: #CBD5E1;
            --footer-muted: #94A3B8;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 20px;
            --radius-full: 999px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 24px rgba(37, 99, 235, 0.12);
            --shadow-accent: 0 8px 24px rgba(245, 158, 11, 0.18);
            --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --container-max: 1200px;
            --section-pad: 80px;
            --section-pad-mobile: 48px;
            --gap: 24px;
            --gap-sm: 16px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            padding-bottom: 0;
            min-height: 100vh;
        }

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

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

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

        button {
            font-family: var(--font-family);
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
        }

        input,
        select {
            font-family: var(--font-family);
            font-size: 14px;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ===== 顶部导航 ===== */
        .site-header {
            position: fixed;
            top: 16px;
            left: 50%;
            transform: translateX(-50%);
            width: calc(100% - 40px);
            max-width: 1180px;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-radius: var(--radius-full);
            border: 1px solid rgba(229, 231, 235, 0.8);
            transition: box-shadow var(--transition), background var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
            background: rgba(255, 255, 255, 0.96);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 8px 20px;
            gap: 16px;
        }

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

        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

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

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
        }

        .main-nav li a {
            display: inline-block;
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-full);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .main-nav li a:hover {
            color: var(--primary);
            background: rgba(37, 99, 235, 0.08);
        }

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

        .nav-cta {
            display: inline-block;
            padding: 8px 20px;
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            background: var(--primary);
            border-radius: var(--radius-full);
            transition: all var(--transition);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .nav-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
            background: transparent;
            border: none;
            cursor: pointer;
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all var(--transition);
        }

        .hamburger span:nth-child(1).open {
            transform: translateY(7px) rotate(45deg);
        }

        .hamburger span:nth-child(2).open {
            opacity: 0;
        }

        .hamburger span:nth-child(3).open {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== 面包屑与分类标题区 ===== */
        .page-header {
            padding-top: 120px;
            padding-bottom: 32px;
            background: linear-gradient(180deg, #EFF6FF 0%, #F8FAFC 100%);
            border-bottom: 1px solid var(--border-light);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 400;
            color: var(--text-muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

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

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

        .breadcrumb .separator {
            color: var(--text-light);
            font-size: 12px;
        }

        .breadcrumb .current {
            color: var(--text-secondary);
            font-weight: 500;
        }

        .page-header h1 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .page-header .page-desc {
            font-size: 15px;
            color: var(--text-muted);
            max-width: 720px;
            line-height: 1.8;
        }

        /* ===== 筛选/排序工具条 ===== */
        .filter-bar {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 16px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            box-shadow: var(--shadow-sm);
            margin-top: 24px;
            margin-bottom: 8px;
        }

        .filter-group {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

        .filter-group label {
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
        }

        .filter-select {
            padding: 8px 12px;
            border: 1px solid #CBD5E1;
            border-radius: var(--radius-md);
            font-size: 14px;
            color: var(--text);
            background: var(--white);
            cursor: pointer;
            transition: border-color var(--transition), box-shadow var(--transition);
            min-width: 130px;
        }

        .filter-select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
        }

        .sort-buttons {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }

        .sort-btn {
            padding: 8px 16px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-full);
            border: 1px solid var(--border);
            background: var(--white);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .sort-btn:hover {
            color: var(--primary);
            background: var(--primary-light);
            border-color: rgba(37, 99, 235, 0.3);
        }

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

        /* ===== 列表卡片主体 ===== */
        .content-section {
            padding: var(--section-pad) 0;
        }

        .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            letter-spacing: 0.3px;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--text-muted);
            margin-bottom: 32px;
            line-height: 1.7;
        }

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

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

        .data-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: rgba(37, 99, 235, 0.25);
        }

        .data-card .card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            background: var(--border-light);
            flex-shrink: 0;
        }

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

        .data-card .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 10px;
        }

        .badge {
            display: inline-block;
            padding: 3px 10px;
            font-size: 12px;
            font-weight: 500;
            border-radius: var(--radius-sm);
            line-height: 1.5;
            white-space: nowrap;
        }

        .badge-blue {
            background: var(--primary-light);
            color: var(--primary);
        }

        .badge-orange {
            background: var(--accent-light);
            color: var(--accent-dark);
        }

        .badge-green {
            background: #ECFDF5;
            color: #059669;
        }

        .data-card .card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.5;
        }

        .data-card .card-summary {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 12px;
        }

        .data-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            font-weight: 500;
            color: var(--text-light);
            padding-top: 12px;
            border-top: 1px solid var(--border-light);
        }

        .data-card .card-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        /* ===== 热点专题支撑板块 ===== */
        .topic-section {
            background: var(--white);
            padding: var(--section-pad) 0;
            border-top: 1px solid var(--border-light);
        }

        .topic-scroll {
            display: flex;
            gap: 16px;
            overflow-x: auto;
            padding-bottom: 12px;
            scrollbar-width: thin;
            scrollbar-color: var(--border) transparent;
            -webkit-overflow-scrolling: touch;
        }

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

        .topic-scroll::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 3px;
        }

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

        .topic-tag-card {
            min-width: 220px;
            max-width: 260px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 16px 18px;
            flex-shrink: 0;
            transition: all var(--transition);
            cursor: pointer;
        }

        .topic-tag-card:hover {
            border-color: rgba(37, 99, 235, 0.3);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            background: var(--white);
        }

        .topic-tag-card .topic-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
        }

        .topic-tag-card .topic-count {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .topic-tag-card .topic-icon {
            font-size: 20px;
            margin-bottom: 8px;
            display: block;
        }

        /* ===== 数据速览支撑板块 ===== */
        .metrics-section {
            background: var(--bg);
            padding: var(--section-pad) 0;
        }

        .metric-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--gap);
        }

        .metric-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 20px 22px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

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

        .metric-card .metric-label {
            font-size: 13px;
            font-weight: 500;
            color: var(--text-muted);
            margin-bottom: 6px;
        }

        .metric-card .metric-value {
            font-size: 30px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .metric-card .metric-change {
            font-size: 13px;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .metric-up {
            color: #059669;
        }

        .metric-down {
            color: #DC2626;
        }

        /* ===== 订阅CTA支撑板块 ===== */
        .subscribe-section {
            background: var(--white);
            padding: var(--section-pad) 0;
            border-top: 1px solid var(--border-light);
        }

        .subscribe-panel {
            background: linear-gradient(135deg, #EFF6FF 0%, #F8FAFC 100%);
            border: 1px solid rgba(37, 99, 235, 0.15);
            border-radius: var(--radius-xl);
            padding: 36px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .subscribe-panel .subscribe-text h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }

        .subscribe-panel .subscribe-text p {
            font-size: 14px;
            color: var(--text-muted);
            max-width: 480px;
            line-height: 1.7;
        }

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

        .subscribe-form input {
            padding: 12px 16px;
            border: 1px solid #CBD5E1;
            border-radius: var(--radius-md);
            font-size: 14px;
            color: var(--text);
            background: var(--white);
            min-width: 240px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .subscribe-form input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
        }

        .subscribe-form button {
            padding: 12px 24px;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-md);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .subscribe-form button:hover {
            background: var(--primary-dark);
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
        }

        .subscribe-form button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* ===== 查看更多按钮 ===== */
        .view-more-wrapper {
            text-align: center;
            margin-top: 32px;
        }

        .view-more-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            background: var(--primary);
            border-radius: var(--radius-full);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .view-more-btn:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 6px 20px rgba(37, 99, 235, 0.35);
            transform: translateY(-1px);
        }

        .view-more-btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* ===== FAQ组件 ===== */
        .faq-section {
            background: var(--bg);
            padding: var(--section-pad) 0;
            border-top: 1px solid var(--border-light);
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

        .faq-item:focus-within {
            border-color: rgba(37, 99, 235, 0.3);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.08);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text);
            cursor: pointer;
            transition: background var(--transition);
            gap: 12px;
            text-align: left;
            width: 100%;
        }

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

        .faq-question .faq-arrow {
            font-size: 14px;
            color: var(--text-muted);
            transition: transform var(--transition);
            flex-shrink: 0;
            display: inline-block;
        }

        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition), padding var(--transition);
            padding: 0 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--footer-bg);
            color: var(--footer-text);
            padding: 60px 0 32px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--footer-muted);
            line-height: 1.8;
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

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

        .footer-col ul li a:hover {
            color: #fff;
            text-decoration: underline dotted;
        }

        .footer-subscribe h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 8px;
        }

        .footer-subscribe p {
            font-size: 14px;
            color: var(--footer-muted);
            margin-bottom: 14px;
            line-height: 1.6;
        }

        .footer-subscribe-form {
            display: flex;
            gap: 8px;
        }

        .footer-subscribe-form input {
            flex: 1;
            padding: 10px 14px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-md);
            font-size: 14px;
            color: var(--text);
            background: rgba(255, 255, 255, 0.95);
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .footer-subscribe-form input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
        }

        .footer-subscribe-form button {
            padding: 10px 18px;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-md);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .footer-subscribe-form button:hover {
            background: var(--primary-dark);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 13px;
            color: var(--footer-muted);
        }

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

        .footer-bottom-links a {
            font-size: 13px;
            color: var(--footer-muted);
            transition: color var(--transition);
        }

        .footer-bottom-links a:hover {
            color: #fff;
            text-decoration: underline dotted;
        }

        .footer-bottom-links span {
            color: rgba(255, 255, 255, 0.3);
        }

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

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

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

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

            .page-header h1 {
                font-size: 32px;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                width: calc(100% - 24px);
                top: 8px;
            }

            .header-inner {
                padding: 6px 14px;
            }

            .main-nav {
                display: none;
                position: absolute;
                top: calc(100% + 8px);
                left: 0;
                right: 0;
                background: var(--white);
                border-radius: var(--radius-lg);
                box-shadow: var(--shadow-lg);
                flex-direction: column;
                align-items: stretch;
                padding: 12px;
                gap: 4px;
                border: 1px solid var(--border);
            }

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

            .main-nav li a {
                padding: 12px 16px;
                font-size: 15px;
                text-align: center;
                border-radius: var(--radius-md);
            }

            .nav-cta {
                display: none;
            }

            .hamburger {
                display: flex;
            }

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

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

            .filter-bar {
                flex-direction: column;
                align-items: stretch;
                gap: 12px;
            }

            .filter-group {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .filter-select {
                width: 100%;
                min-width: unset;
            }

            .sort-buttons {
                width: 100%;
                justify-content: space-between;
            }

            .sort-btn {
                flex: 1;
                text-align: center;
                padding: 8px 12px;
                font-size: 12px;
            }

            .subscribe-panel {
                flex-direction: column;
                align-items: flex-start;
                padding: 24px 20px;
            }

            .subscribe-form {
                width: 100%;
                flex-direction: column;
            }

            .subscribe-form input {
                width: 100%;
                min-width: unset;
            }

            .subscribe-form button {
                width: 100%;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

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

            .page-header {
                padding-top: 100px;
                padding-bottom: 24px;
            }

            .page-header h1 {
                font-size: 28px;
            }

            .content-section,
            .topic-section,
            .metrics-section,
            .subscribe-section,
            .faq-section {
                padding: 48px 0;
            }

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

        @media (max-width: 520px) {
            .metric-grid {
                grid-template-columns: 1fr;
            }

            .metric-card .metric-value {
                font-size: 26px;
            }

            .page-header h1 {
                font-size: 24px;
            }

            .card-grid {
                gap: 16px;
            }

            .container {
                padding: 0 16px;
            }

            .topic-tag-card {
                min-width: 180px;
                max-width: 220px;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #2563EB;
            --primary-dark: #1D4ED8;
            --primary-light: #EFF6FF;
            --accent: #F59E0B;
            --accent-dark: #D97706;
            --accent-light: #FFF7E6;
            --bg: #F8FAFC;
            --white: #FFFFFF;
            --text: #0F172A;
            --text-secondary: #475569;
            --text-muted: #64748B;
            --text-light: #94A3B8;
            --border: #E5E7EB;
            --border-light: #F1F5F9;
            --footer-bg: #1E293B;
            --footer-text: #CBD5E1;
            --footer-muted: #94A3B8;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 20px;
            --radius-full: 999px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 24px rgba(37, 99, 235, 0.12);
            --shadow-accent: 0 8px 24px rgba(245, 158, 11, 0.18);
            --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --container-max: 1200px;
            --section-pad: 80px;
            --section-pad-mobile: 48px;
            --gap: 24px;
            --gap-sm: 16px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            padding-bottom: 0;
            min-height: 100vh;
            margin: 0;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        button {
            font-family: var(--font-family);
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
        }
        input,
        select {
            font-family: var(--font-family);
            font-size: 14px;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0;
            line-height: 1.4;
            font-weight: 700;
        }
        p {
            margin: 0;
        }
        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ===== 顶部导航 ===== */
        .site-header {
            position: fixed;
            top: 16px;
            left: 50%;
            transform: translateX(-50%);
            width: calc(100% - 40px);
            max-width: 1180px;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-radius: var(--radius-full);
            border: 1px solid rgba(229, 231, 235, 0.8);
            transition: box-shadow var(--transition), background var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
            background: rgba(255, 255, 255, 0.96);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 8px 20px;
            gap: 16px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .logo-text span {
            color: var(--primary);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
        }
        .main-nav li a {
            display: inline-block;
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-full);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .main-nav li a:hover {
            color: var(--primary);
            background: rgba(37, 99, 235, 0.08);
        }
        .main-nav li a.active {
            color: var(--primary);
            background: rgba(37, 99, 235, 0.1);
            font-weight: 600;
        }
        .nav-cta {
            display: inline-block;
            padding: 8px 20px;
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            background: var(--primary);
            border-radius: var(--radius-full);
            transition: all var(--transition);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .nav-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
            background: transparent;
            border: none;
            cursor: pointer;
            align-items: center;
            justify-content: center;
        }
        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== 面包屑 + 分类标题区 ===== */
        .page-header {
            padding: 140px 0 40px;
            background: linear-gradient(180deg, var(--primary-light) 0%, var(--bg) 100%);
            border-bottom: 1px solid var(--border-light);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .separator {
            color: var(--text-light);
            font-size: 12px;
        }
        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }
        .page-header h1 {
            font-size: 36px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .page-header .page-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.8;
        }

        /* ===== 筛选/排序工具条 ===== */
        .filter-section {
            padding: 32px 0 24px;
        }
        .filter-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 16px 20px;
            box-shadow: var(--shadow-sm);
        }
        .filter-left {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .filter-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            white-space: nowrap;
        }
        .filter-select {
            padding: 8px 16px;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            background: var(--white);
            color: var(--text);
            font-size: 14px;
            cursor: pointer;
            transition: border-color var(--transition), box-shadow var(--transition);
            min-width: 140px;
            outline: none;
            appearance: auto;
            -webkit-appearance: auto;
        }
        .filter-select:hover {
            border-color: var(--primary);
        }
        .filter-select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
        }
        .sort-btns {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .sort-btn {
            padding: 8px 16px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-full);
            transition: all var(--transition);
            cursor: pointer;
            white-space: nowrap;
        }
        .sort-btn:hover {
            color: var(--primary);
            border-color: var(--primary);
            background: var(--primary-light);
        }
        .sort-btn.active {
            color: #fff;
            background: var(--primary);
            border-color: var(--primary);
            font-weight: 600;
        }
        .sort-btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* ===== 资讯卡片列表 ===== */
        .articles-section {
            padding: 24px 0 48px;
        }
        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .article-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .article-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: rgba(37, 99, 235, 0.3);
        }
        .article-card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            background: var(--border-light);
            display: block;
        }
        .article-card-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
            gap: 8px;
        }
        .article-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 8px;
            font-size: 12px;
            color: var(--text-muted);
        }
        .article-card-date {
            font-weight: 500;
            color: var(--text-light);
        }
        .article-card-tag {
            display: inline-block;
            padding: 2px 10px;
            font-size: 12px;
            font-weight: 500;
            color: var(--primary);
            background: var(--primary-light);
            border-radius: var(--radius-sm);
            white-space: nowrap;
        }
        .article-card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.6;
            margin: 4px 0;
        }
        .article-card-excerpt {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
        }
        .article-card-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            margin-top: 8px;
            transition: all var(--transition);
        }
        .article-card-link:hover {
            color: var(--primary-dark);
            gap: 8px;
        }

        /* ===== 热点专题支撑板块 ===== */
        .topics-section {
            padding: 48px 0;
            background: var(--white);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }
        .section-heading {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 24px;
        }
        .section-heading h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.3px;
        }
        .section-heading .heading-extra {
            font-size: 14px;
            color: var(--text-muted);
        }
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 16px;
        }
        .topic-card {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
            padding: 24px 16px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            text-align: center;
            transition: all var(--transition);
            cursor: pointer;
        }
        .topic-card:hover {
            background: var(--primary-light);
            border-color: rgba(37, 99, 235, 0.3);
            box-shadow: var(--shadow-sm);
            transform: translateY(-2px);
        }
        .topic-card-icon {
            width: 44px;
            height: 44px;
            background: var(--primary-light);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 20px;
            font-weight: 700;
        }
        .topic-card-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
        }
        .topic-card-count {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* ===== 数据速览支撑板块 ===== */
        .metrics-section {
            padding: 48px 0;
        }
        .metric-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .metric-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .metric-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .metric-value {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 8px;
        }
        .metric-label {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
        }
        .metric-note {
            font-size: 12px;
            color: var(--text-light);
            margin-top: 4px;
        }

        /* ===== 订阅CTA板块 ===== */
        .subscribe-section {
            padding: 48px 0;
            background: var(--white);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }
        .subscribe-card {
            background: linear-gradient(135deg, var(--primary-light) 0%, #F0F7FF 100%);
            border: 1px solid rgba(37, 99, 235, 0.2);
            border-radius: var(--radius-xl);
            padding: 40px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 24px;
        }
        .subscribe-info h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }
        .subscribe-info p {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 480px;
        }
        .subscribe-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            flex-shrink: 0;
        }
        .subscribe-form input {
            padding: 12px 20px;
            border: 1px solid #CBD5E1;
            border-radius: var(--radius-md);
            font-size: 14px;
            color: var(--text);
            background: var(--white);
            min-width: 260px;
            outline: none;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .subscribe-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
        }
        .subscribe-form input::placeholder {
            color: var(--text-light);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            background: var(--primary);
            border-radius: var(--radius-md);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
            color: #fff;
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .btn-primary:active {
            transform: scale(0.98);
        }

        /* ===== 查看更多按钮 ===== */
        .more-section {
            padding: 32px 0 64px;
            text-align: center;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 32px;
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
            background: var(--white);
            border: 1px solid var(--primary);
            border-radius: var(--radius-full);
            cursor: pointer;
            transition: all var(--transition);
        }
        .btn-secondary:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
        }
        .btn-secondary:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .btn-secondary:active {
            transform: scale(0.98);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--footer-bg);
            color: var(--footer-text);
            padding: 56px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 32px;
            margin-bottom: 40px;
        }
        .footer-brand h3 {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--footer-muted);
            line-height: 1.7;
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--footer-muted);
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary);
        }
        .footer-subscribe h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-subscribe p {
            font-size: 14px;
            color: var(--footer-muted);
            margin-bottom: 16px;
            line-height: 1.7;
        }
        .footer-subscribe-form {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .footer-subscribe-form input {
            flex: 1;
            min-width: 180px;
            padding: 10px 16px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            font-size: 14px;
            outline: none;
            transition: all var(--transition);
        }
        .footer-subscribe-form input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-subscribe-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.3);
        }
        .footer-subscribe-form button {
            padding: 10px 20px;
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            background: var(--primary);
            border-radius: var(--radius-md);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .footer-subscribe-form button:hover {
            background: var(--primary-dark);
        }
        .footer-bottom {
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom span {
            font-size: 13px;
            color: var(--footer-muted);
        }
        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .footer-bottom-links a {
            font-size: 13px;
            color: var(--footer-text);
            transition: color var(--transition);
            text-decoration: none;
        }
        .footer-bottom-links a:hover {
            color: #fff;
            text-decoration: underline dashed;
            text-underline-offset: 4px;
        }
        .footer-bottom-links span {
            color: rgba(255, 255, 255, 0.3);
            font-size: 12px;
        }

        /* ===== 响应式断点 ===== */
        @media (max-width: 1024px) {
            .article-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .topic-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .metric-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .page-header h1 {
                font-size: 30px;
            }
        }
        @media (max-width: 768px) {
            .site-header {
                top: 8px;
                width: calc(100% - 20px);
                border-radius: var(--radius-lg);
            }
            .header-inner {
                padding: 8px 12px;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: calc(100% + 8px);
                left: 0;
                right: 0;
                flex-direction: column;
                align-items: stretch;
                background: var(--white);
                border-radius: var(--radius-lg);
                border: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                padding: 12px;
                gap: 4px;
                z-index: 999;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav li a {
                display: block;
                padding: 12px 16px;
                text-align: center;
                width: 100%;
            }
            .hamburger {
                display: flex;
            }
            .nav-cta {
                display: none;
            }
            .page-header {
                padding: 110px 0 32px;
            }
            .page-header h1 {
                font-size: 26px;
            }
            .page-header .page-desc {
                font-size: 15px;
            }
            .article-grid {
                grid-template-columns: 1fr;
            }
            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .metric-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .metric-value {
                font-size: 26px;
            }
            .subscribe-card {
                padding: 28px 20px;
                flex-direction: column;
                align-items: flex-start;
            }
            .subscribe-form input {
                min-width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .filter-bar {
                flex-direction: column;
                align-items: flex-start;
            }
            .filter-left {
                width: 100%;
                flex-wrap: wrap;
            }
            .sort-btns {
                width: 100%;
                overflow-x: auto;
                flex-wrap: nowrap;
                padding-bottom: 4px;
            }
            .sort-btn {
                flex-shrink: 0;
            }
        }
        @media (max-width: 520px) {
            .topic-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .topic-card {
                padding: 16px 12px;
            }
            .metric-grid {
                grid-template-columns: 1fr;
            }
            .page-header h1 {
                font-size: 22px;
            }
            .article-card-title {
                font-size: 15px;
            }
            .section-heading h2 {
                font-size: 20px;
            }
        }