/* roulang page: index */
:root {
            --leyu-primary: #1F5E8C;
            --leyu-primary-dark: #174A70;
            --leyu-primary-light: #EAF2F8;
            --leyu-accent: #F2994A;
            --leyu-accent-green: #6FCF97;
            --leyu-bg: #F5F9FC;
            --leyu-bg-soft: #EEF4F9;
            --leyu-white: #ffffff;
            --leyu-text: #1A2B3C;
            --leyu-text-muted: #5A6F80;
            --leyu-border: #DCE5EC;
            --leyu-border-light: #E8EEF4;
            --leyu-shadow-sm: 0 2px 8px rgba(31, 94, 140, 0.06);
            --leyu-shadow: 0 4px 16px rgba(31, 94, 140, 0.08);
            --leyu-shadow-hover: 0 8px 24px rgba(31, 94, 140, 0.15);
            --leyu-radius: 12px;
            --leyu-radius-sm: 8px;
            --leyu-radius-lg: 16px;
            --leyu-font: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --leyu-font-num: "Arial", "Helvetica Neue", sans-serif;
            --leyu-spacing-section: 88px;
            --leyu-spacing-card: 28px;
            --leyu-transition: all 0.28s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--leyu-font);
            font-size: 16px;
            line-height: 1.75;
            color: var(--leyu-text);
            background-color: var(--leyu-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--leyu-primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ===== 杂志刊头导航 ===== */
        .masthead {
            background: var(--leyu-white);
            border-bottom: 1px solid var(--leyu-border-light);
            position: sticky;
            top: 0;
            z-index: 1030;
            box-shadow: 0 2px 12px rgba(31, 94, 140, 0.05);
        }

        .masthead-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 14px 0;
            gap: 14px 20px;
        }

        .masthead-brand {
            font-size: 30px;
            font-weight: 700;
            color: var(--leyu-primary);
            letter-spacing: 1px;
            line-height: 1.2;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .masthead-brand .brand-icon {
            width: 40px;
            height: 40px;
            background: var(--leyu-primary);
            color: var(--leyu-white);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
        }

        .masthead-brand:hover {
            color: var(--leyu-primary-dark);
        }

        .masthead-nav-wrap {
            display: flex;
            align-items: center;
            gap: 22px;
            flex-wrap: wrap;
        }

        .masthead-divider {
            width: 1px;
            height: 30px;
            background: var(--leyu-border);
            margin: 0 4px;
        }

        .masthead-nav {
            display: flex;
            align-items: center;
            gap: 18px;
            flex-wrap: wrap;
        }

        .masthead-nav a {
            font-size: 15px;
            font-weight: 500;
            color: var(--leyu-text);
            padding: 6px 2px;
            position: relative;
            white-space: nowrap;
            border-bottom: 2px solid transparent;
        }

        .masthead-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background: var(--leyu-primary);
            transition: var(--leyu-transition);
        }

        .masthead-nav a:hover::after,
        .masthead-nav a.active::after {
            width: 100%;
        }

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

        .masthead-nav a:hover {
            color: var(--leyu-primary-dark);
        }

        .masthead-cta {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .masthead-cta .btn-subscribe {
            background: var(--leyu-primary);
            color: var(--leyu-white);
            border: none;
            border-radius: var(--leyu-radius-sm);
            padding: 9px 18px;
            font-size: 14px;
            font-weight: 600;
            transition: var(--leyu-transition);
            white-space: nowrap;
        }

        .masthead-cta .btn-subscribe:hover {
            background: var(--leyu-primary-dark);
            color: var(--leyu-white);
            transform: scale(1.03);
        }

        .masthead-toggler {
            display: none;
            background: none;
            border: 1px solid var(--leyu-border);
            border-radius: 8px;
            padding: 8px 12px;
            font-size: 20px;
            color: var(--leyu-primary);
            cursor: pointer;
            transition: var(--leyu-transition);
        }

        .masthead-toggler:hover {
            background: var(--leyu-bg-soft);
        }

        /* ===== Hero 指标看板 ===== */
        .hero-metrics {
            position: relative;
            background: linear-gradient(135deg, #EEF4F9 0%, #E3EEF6 40%, #F5F9FC 100%);
            padding: 72px 0 88px;
            overflow: hidden;
        }

        .hero-metrics::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(31, 94, 140, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-metrics::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -8%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(242, 153, 74, 0.07) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

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

        .hero-brand-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.7);
            border: 1px solid var(--leyu-border);
            border-radius: 50px;
            padding: 6px 16px;
            font-size: 14px;
            font-weight: 600;
            color: var(--leyu-primary);
            margin-bottom: 18px;
        }

        .hero-brand-tag .tag-dot {
            width: 8px;
            height: 8px;
            background: var(--leyu-accent);
            border-radius: 50%;
        }

        .hero-metrics h1 {
            font-size: 38px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--leyu-text);
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }

        .hero-metrics .hero-subtitle {
            font-size: 17px;
            line-height: 1.85;
            color: var(--leyu-text-muted);
            max-width: 760px;
            margin-bottom: 30px;
        }

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

        .hero-metrics .hero-actions .btn-main {
            background: var(--leyu-primary);
            color: var(--leyu-white);
            border: none;
            border-radius: 10px;
            padding: 13px 28px;
            font-size: 16px;
            font-weight: 600;
            transition: var(--leyu-transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .hero-metrics .hero-actions .btn-main:hover {
            background: var(--leyu-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(31, 94, 140, 0.25);
            color: var(--leyu-white);
        }

        .hero-metrics .hero-actions .btn-outline {
            background: transparent;
            color: var(--leyu-primary);
            border: 1.5px solid var(--leyu-primary);
            border-radius: 10px;
            padding: 12px 26px;
            font-size: 16px;
            font-weight: 600;
            transition: var(--leyu-transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .hero-metrics .hero-actions .btn-outline:hover {
            background: var(--leyu-primary-light);
            color: var(--leyu-primary-dark);
        }

        .metrics-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }

        .metric-card {
            background: var(--leyu-white);
            border-radius: var(--leyu-radius);
            box-shadow: var(--leyu-shadow);
            padding: 24px 22px;
            text-align: left;
            border: 1px solid var(--leyu-border-light);
            transition: var(--leyu-transition);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

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

        .metric-card .metric-icon {
            width: 42px;
            height: 42px;
            background: var(--leyu-primary-light);
            color: var(--leyu-primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            margin-bottom: 4px;
        }

        .metric-card .metric-number {
            font-family: var(--leyu-font-num);
            font-size: 34px;
            font-weight: 700;
            color: var(--leyu-primary);
            line-height: 1.1;
        }

        .metric-card .metric-number .metric-unit {
            font-size: 16px;
            font-weight: 600;
            color: var(--leyu-text-muted);
            margin-left: 2px;
        }

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

        /* ===== Section 通用 ===== */
        .section-block {
            padding: var(--leyu-spacing-section) 0;
        }

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

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

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

        .section-header {
            margin-bottom: 44px;
            max-width: 780px;
        }

        .section-header.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 700;
            color: var(--leyu-primary);
            text-transform: uppercase;
            letter-spacing: 1.2px;
            margin-bottom: 12px;
        }

        .section-label::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--leyu-accent);
            border-radius: 2px;
        }

        .section-header.center .section-label::before {
            display: none;
        }

        .section-header.center .section-label::after {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--leyu-accent);
            border-radius: 2px;
        }

        .section-title {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.35;
            color: var(--leyu-text);
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        .section-desc {
            font-size: 16px;
            line-height: 1.85;
            color: var(--leyu-text-muted);
            margin-bottom: 0;
        }

        /* ===== 品牌介绍 ===== */
        .brand-intro-card {
            background: var(--leyu-white);
            border-radius: var(--leyu-radius-lg);
            box-shadow: var(--leyu-shadow);
            padding: 40px 44px;
            border: 1px solid var(--leyu-border-light);
            position: relative;
            overflow: hidden;
        }

        .brand-intro-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: linear-gradient(180deg, var(--leyu-primary) 0%, var(--leyu-accent) 100%);
        }

        .brand-intro-card .intro-title {
            font-size: 22px;
            font-weight: 700;
            color: var(--leyu-text);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .brand-intro-card .intro-title i {
            color: var(--leyu-accent);
        }

        .brand-intro-card p {
            font-size: 15.5px;
            line-height: 1.9;
            color: var(--leyu-text-muted);
            margin-bottom: 14px;
        }

        .brand-intro-card p:last-child {
            margin-bottom: 0;
        }

        .brand-intro-card .intro-highlight {
            color: var(--leyu-primary);
            font-weight: 600;
            background: var(--leyu-primary-light);
            padding: 2px 8px;
            border-radius: 4px;
        }

        /* ===== 服务矩阵 ===== */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 20px;
        }

        .service-card {
            background: var(--leyu-white);
            border-radius: var(--leyu-radius);
            box-shadow: var(--leyu-shadow-sm);
            padding: 28px 26px;
            border: 1px solid var(--leyu-border-light);
            transition: var(--leyu-transition);
            display: flex;
            flex-direction: column;
            gap: 14px;
            position: relative;
            overflow: hidden;
        }

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

        .service-card.card-large {
            grid-column: span 7;
            flex-direction: row;
            align-items: center;
            gap: 24px;
            padding: 32px;
        }

        .service-card.card-medium {
            grid-column: span 5;
            padding: 32px;
        }

        .service-card.card-small {
            grid-column: span 4;
        }

        .service-card .service-icon-lg {
            width: 72px;
            height: 72px;
            background: var(--leyu-primary-light);
            color: var(--leyu-primary);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 32px;
            flex-shrink: 0;
        }

        .service-card .service-icon {
            width: 48px;
            height: 48px;
            background: var(--leyu-primary-light);
            color: var(--leyu-primary);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            flex-shrink: 0;
        }

        .service-card .service-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--leyu-text);
            margin-bottom: 0;
        }

        .service-card .service-desc {
            font-size: 14.5px;
            line-height: 1.8;
            color: var(--leyu-text-muted);
            margin-bottom: 0;
        }

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

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

        /* ===== 结果对比 ===== */
        .compare-wrapper {
            background: var(--leyu-white);
            border-radius: var(--leyu-radius-lg);
            box-shadow: var(--leyu-shadow);
            padding: 36px 32px;
            border: 1px solid var(--leyu-border-light);
            overflow-x: auto;
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 640px;
        }

        .compare-table th {
            font-size: 15px;
            font-weight: 700;
            color: var(--leyu-text);
            padding: 14px 16px;
            border-bottom: 2px solid var(--leyu-border);
            text-align: left;
        }

        .compare-table th.highlight-col {
            color: var(--leyu-primary);
            background: var(--leyu-primary-light);
            border-radius: 8px 8px 0 0;
        }

        .compare-table td {
            font-size: 14.5px;
            padding: 14px 16px;
            border-bottom: 1px solid var(--leyu-border-light);
            color: var(--leyu-text-muted);
            vertical-align: top;
            line-height: 1.7;
        }

        .compare-table td.highlight-col {
            color: var(--leyu-text);
            background: rgba(234, 242, 248, 0.45);
            font-weight: 500;
        }

        .compare-table .compare-check {
            color: var(--leyu-accent-green);
            font-weight: 600;
        }

        .compare-table .compare-dash {
            color: #C0CCD4;
        }

        /* ===== 里程碑时间线 ===== */
        .timeline {
            position: relative;
            padding-left: 36px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 12px;
            top: 0;
            bottom: 0;
            width: 3px;
            background: linear-gradient(180deg, var(--leyu-primary) 0%, var(--leyu-accent) 100%);
            border-radius: 3px;
        }

        .timeline-item {
            position: relative;
            margin-bottom: 36px;
            padding-left: 20px;
        }

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

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -30px;
            top: 5px;
            width: 16px;
            height: 16px;
            background: var(--leyu-white);
            border: 3px solid var(--leyu-primary);
            border-radius: 50%;
            box-shadow: 0 0 0 4px rgba(31, 94, 140, 0.15);
        }

        .timeline-item .timeline-date {
            font-family: var(--leyu-font-num);
            font-size: 14px;
            font-weight: 700;
            color: var(--leyu-accent);
            letter-spacing: 0.5px;
        }

        .timeline-item .timeline-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--leyu-text);
            margin: 6px 0;
        }

        .timeline-item .timeline-desc {
            font-size: 14.5px;
            line-height: 1.75;
            color: var(--leyu-text-muted);
        }

        /* ===== 资讯列表 ===== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .news-item {
            background: var(--leyu-white);
            border-radius: var(--leyu-radius);
            box-shadow: var(--leyu-shadow-sm);
            padding: 20px 22px;
            border: 1px solid var(--leyu-border-light);
            display: flex;
            align-items: center;
            gap: 20px;
            transition: var(--leyu-transition);
            cursor: pointer;
        }

        .news-item:hover {
            box-shadow: var(--leyu-shadow-hover);
            transform: translateX(4px);
            border-color: var(--leyu-primary);
        }

        .news-item .news-thumb {
            width: 120px;
            height: 80px;
            border-radius: 8px;
            object-fit: cover;
            flex-shrink: 0;
            background: var(--leyu-bg-soft);
        }

        .news-item .news-body {
            flex: 1;
            min-width: 0;
        }

        .news-item .news-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--leyu-text);
            margin-bottom: 6px;
            line-height: 1.45;
        }

        .news-item .news-summary {
            font-size: 14px;
            line-height: 1.6;
            color: var(--leyu-text-muted);
            margin-bottom: 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-item .news-meta {
            font-size: 13px;
            color: var(--leyu-text-muted);
            display: flex;
            align-items: center;
            gap: 14px;
        }

        /* ===== 平台保障 ===== */
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 18px;
        }

        .guarantee-item {
            background: var(--leyu-white);
            border-radius: var(--leyu-radius);
            box-shadow: var(--leyu-shadow-sm);
            padding: 22px 24px;
            border: 1px solid var(--leyu-border-light);
            display: flex;
            align-items: flex-start;
            gap: 16px;
            transition: var(--leyu-transition);
        }

        .guarantee-item:hover {
            box-shadow: var(--leyu-shadow-hover);
            transform: translateY(-3px);
        }

        .guarantee-item .guarantee-icon {
            width: 44px;
            height: 44px;
            background: var(--leyu-primary-light);
            color: var(--leyu-primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }

        .guarantee-item .guarantee-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--leyu-text);
            margin-bottom: 6px;
        }

        .guarantee-item .guarantee-desc {
            font-size: 14px;
            line-height: 1.7;
            color: var(--leyu-text-muted);
            margin-bottom: 0;
        }

        /* ===== 快速解答 ===== */
        .quick-qa-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .quick-qa-item {
            background: var(--leyu-white);
            border-radius: var(--leyu-radius);
            box-shadow: var(--leyu-shadow-sm);
            padding: 20px 24px;
            border: 1px solid var(--leyu-border-light);
            border-left: 3px solid var(--leyu-accent);
        }

        .quick-qa-item .qa-question {
            font-size: 16px;
            font-weight: 700;
            color: var(--leyu-text);
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .quick-qa-item .qa-question i {
            color: var(--leyu-accent);
            font-size: 14px;
        }

        .quick-qa-item .qa-answer {
            font-size: 14.5px;
            line-height: 1.75;
            color: var(--leyu-text-muted);
            margin-bottom: 0;
            padding-left: 26px;
        }

        /* ===== FAQ 手风琴 ===== */
        .faq-wrapper {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-accordion .accordion-item {
            background: var(--leyu-white);
            border: 1px solid var(--leyu-border-light);
            border-radius: var(--leyu-radius) !important;
            margin-bottom: 12px;
            box-shadow: var(--leyu-shadow-sm);
            overflow: hidden;
            transition: var(--leyu-transition);
        }

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

        .faq-accordion .accordion-button {
            font-size: 16px;
            font-weight: 600;
            color: var(--leyu-text);
            background: var(--leyu-bg-soft);
            padding: 18px 24px;
            border: none;
            box-shadow: none;
            transition: var(--leyu-transition);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--leyu-primary);
            background: var(--leyu-primary-light);
            box-shadow: none;
        }

        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            border-color: var(--leyu-primary);
        }

        .faq-accordion .accordion-button::after {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            background-size: 20px;
            transition: var(--leyu-transition);
        }

        .faq-accordion .accordion-body {
            font-size: 15px;
            line-height: 1.85;
            color: var(--leyu-text-muted);
            padding: 18px 24px 20px;
            background: var(--leyu-white);
        }

        /* ===== 转化表单 ===== */
        .cta-form-wrapper {
            background: linear-gradient(135deg, var(--leyu-primary) 0%, #174A70 100%);
            border-radius: var(--leyu-radius-lg);
            padding: 48px 44px;
            color: var(--leyu-white);
            position: relative;
            overflow: hidden;
            box-shadow: 0 8px 32px rgba(31, 94, 140, 0.25);
        }

        .cta-form-wrapper::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(242, 153, 74, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-form-wrapper::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -15%;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(111, 207, 151, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-form-wrapper .container {
            position: relative;
            z-index: 2;
        }

        .cta-form-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .cta-form-info .cta-title {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 14px;
            line-height: 1.35;
        }

        .cta-form-info .cta-desc {
            font-size: 15.5px;
            line-height: 1.8;
            opacity: 0.88;
            margin-bottom: 0;
        }

        .cta-form-card {
            background: var(--leyu-white);
            border-radius: var(--leyu-radius);
            padding: 28px 26px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }

        .cta-form-card .form-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--leyu-text);
        }

        .cta-form-card .form-control {
            border: 1.5px solid var(--leyu-border);
            border-radius: 8px;
            padding: 10px 14px;
            font-size: 15px;
            transition: var(--leyu-transition);
            background: var(--leyu-white);
            color: var(--leyu-text);
        }

        .cta-form-card .form-control:focus {
            border-color: var(--leyu-primary);
            box-shadow: 0 0 0 3px rgba(31, 94, 140, 0.15);
        }

        .cta-form-card .btn-submit {
            background: var(--leyu-primary);
            color: var(--leyu-white);
            border: none;
            border-radius: 8px;
            padding: 12px 20px;
            font-size: 16px;
            font-weight: 600;
            transition: var(--leyu-transition);
            width: 100%;
        }

        .cta-form-card .btn-submit:hover {
            background: var(--leyu-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(31, 94, 140, 0.3);
        }

        .cta-form-card .form-trust {
            font-size: 13px;
            color: var(--leyu-text-muted);
            text-align: center;
            margin-top: 10px;
            margin-bottom: 0;
        }

        /* ===== 赛程模块 ===== */
        .schedule-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }

        .schedule-card {
            background: var(--leyu-white);
            border-radius: var(--leyu-radius);
            box-shadow: var(--leyu-shadow-sm);
            padding: 20px 22px;
            border: 1px solid var(--leyu-border-light);
            display: flex;
            align-items: center;
            gap: 16px;
            transition: var(--leyu-transition);
        }

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

        .schedule-card .schedule-date {
            text-align: center;
            flex-shrink: 0;
            background: var(--leyu-primary-light);
            border-radius: 10px;
            padding: 10px 14px;
            min-width: 60px;
        }

        .schedule-card .schedule-date .day {
            font-family: var(--leyu-font-num);
            font-size: 24px;
            font-weight: 700;
            color: var(--leyu-primary);
            line-height: 1.1;
        }

        .schedule-card .schedule-date .month {
            font-size: 12px;
            color: var(--leyu-text-muted);
            font-weight: 500;
        }

        .schedule-card .schedule-body {
            flex: 1;
            min-width: 0;
        }

        .schedule-card .schedule-match {
            font-size: 15px;
            font-weight: 700;
            color: var(--leyu-text);
            margin-bottom: 4px;
        }

        .schedule-card .schedule-league {
            font-size: 13px;
            color: var(--leyu-text-muted);
        }

        .schedule-card .schedule-status {
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 50px;
            flex-shrink: 0;
        }

        .schedule-card .schedule-status.status-live {
            background: #FDE8E8;
            color: #D9534F;
        }

        .schedule-card .schedule-status.status-upcoming {
            background: #E8F5ED;
            color: #4CAF50;
        }

        /* ===== 数据伙伴 ===== */
        .partner-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 20px 36px;
            align-items: center;
            justify-content: space-between;
        }

        .partner-logo-item {
            text-align: center;
            flex-shrink: 0;
        }

        .partner-logo-item .partner-img {
            width: 120px;
            height: 70px;
            background: var(--leyu-white);
            border-radius: 10px;
            box-shadow: var(--leyu-shadow-sm);
            border: 1px solid var(--leyu-border-light);
            display: flex;
            align-items: center;
            justify-content: center;
            object-fit: contain;
            padding: 12px;
            transition: var(--leyu-transition);
        }

        .partner-logo-item .partner-img:hover {
            box-shadow: var(--leyu-shadow);
            transform: translateY(-3px);
        }

        .partner-logo-item .partner-name {
            font-size: 13px;
            color: var(--leyu-text-muted);
            margin-top: 8px;
        }

        /* ===== 深度专题 ===== */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .topic-card {
            background: var(--leyu-white);
            border-radius: var(--leyu-radius);
            overflow: hidden;
            box-shadow: var(--leyu-shadow-sm);
            border: 1px solid var(--leyu-border-light);
            transition: var(--leyu-transition);
            cursor: pointer;
        }

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

        .topic-card .topic-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            background: var(--leyu-bg-soft);
        }

        .topic-card .topic-body {
            padding: 22px 24px;
        }

        .topic-card .topic-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--leyu-text);
            margin-bottom: 8px;
        }

        .topic-card .topic-desc {
            font-size: 14.5px;
            line-height: 1.75;
            color: var(--leyu-text-muted);
            margin-bottom: 12px;
        }

        .topic-card .topic-tag {
            font-size: 13px;
            color: var(--leyu-primary);
            font-weight: 600;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #203A4D;
            color: rgba(255, 255, 255, 0.85);
            padding: 48px 0 28px;
            margin-top: 0;
        }

        .site-footer a {
            color: rgba(255, 255, 255, 0.75);
            transition: var(--leyu-transition);
        }

        .site-footer a:hover {
            color: #ffffff;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.15);
            margin-bottom: 24px;
        }

        .footer-brand .footer-logo {
            font-size: 24px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-brand .footer-logo i {
            color: var(--leyu-accent);
        }

        .footer-brand .footer-desc {
            font-size: 14px;
            line-height: 1.75;
            opacity: 0.75;
            margin-bottom: 0;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 14px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li {
            font-size: 14px;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px 20px;
            font-size: 13px;
            opacity: 0.75;
        }

        .footer-bottom .footer-legal {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            :root {
                --leyu-spacing-section: 64px;
            }

            .masthead-brand {
                font-size: 24px;
            }

            .masthead-nav {
                gap: 14px;
            }

            .masthead-nav a {
                font-size: 14px;
            }

            .masthead-divider {
                display: none;
            }

            .hero-metrics h1 {
                font-size: 30px;
            }

            .metrics-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }

            .service-card.card-large {
                grid-column: span 12;
                flex-direction: column;
                align-items: flex-start;
            }

            .service-card.card-medium {
                grid-column: span 6;
            }

            .service-card.card-small {
                grid-column: span 6;
            }

            .cta-form-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }

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

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

            .footer-top {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 767.98px) {
            :root {
                --leyu-spacing-section: 48px;
                --leyu-spacing-card: 20px;
            }

            .masthead-inner {
                flex-wrap: nowrap;
            }

            .masthead-toggler {
                display: flex;
                align-items: center;
                justify-content: center;
            }

            .masthead-nav-wrap {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--leyu-white);
                flex-direction: column;
                align-items: flex-start;
                padding: 16px 20px;
                box-shadow: 0 8px 20px rgba(31, 94, 140, 0.12);
                border-bottom: 1px solid var(--leyu-border-light);
                gap: 0;
            }

            .masthead-nav-wrap.open {
                display: flex;
            }

            .masthead-nav {
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
                width: 100%;
            }

            .masthead-nav a {
                padding: 10px 0;
                width: 100%;
                border-bottom: 1px solid var(--leyu-border-light);
            }

            .masthead-nav a:last-child {
                border-bottom: none;
            }

            .masthead-cta {
                width: 100%;
                padding-top: 10px;
            }

            .masthead-cta .btn-subscribe {
                width: 100%;
                text-align: center;
            }

            .hero-metrics {
                padding: 48px 0 56px;
            }

            .hero-metrics h1 {
                font-size: 26px;
            }

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

            .metrics-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }

            .metric-card {
                padding: 16px 14px;
            }

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

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

            .brand-intro-card {
                padding: 24px 20px;
            }

            .service-card.card-medium,
            .service-card.card-small {
                grid-column: span 12;
            }

            .service-card.card-large {
                padding: 22px 20px;
            }

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

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

            .news-item {
                flex-direction: column;
                align-items: flex-start;
                padding: 16px;
            }

            .news-item .news-thumb {
                width: 100%;
                height: 160px;
            }

            .compare-wrapper {
                padding: 20px 16px;
            }

            .cta-form-wrapper {
                padding: 28px 22px;
            }

            .cta-form-inner {
                gap: 20px;
            }

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

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

        @media (max-width: 519.98px) {
            .masthead-brand {
                font-size: 20px;
            }

            .masthead-brand .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 16px;
            }

            .hero-metrics h1 {
                font-size: 22px;
                line-height: 1.4;
            }

            .metrics-row {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }

            .metric-card {
                padding: 14px 12px;
                gap: 4px;
            }

            .metric-card .metric-number {
                font-size: 22px;
            }

            .metric-card .metric-icon {
                width: 34px;
                height: 34px;
                font-size: 15px;
            }

            .section-title {
                font-size: 20px;
            }

            .service-grid {
                gap: 14px;
            }

            .compare-table {
                min-width: 500px;
            }

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

/* roulang page: category2 */
:root {
            --leyu-primary: #1F5E8C;
            --leyu-primary-dark: #174A70;
            --leyu-primary-light: #EAF2F8;
            --leyu-accent: #F2994A;
            --leyu-accent-green: #6FCF97;
            --leyu-bg: #F5F9FC;
            --leyu-bg-soft: #EEF4F9;
            --leyu-white: #ffffff;
            --leyu-text: #1A2B3C;
            --leyu-text-muted: #5A6F80;
            --leyu-border: #DCE5EC;
            --leyu-border-light: #E8EEF4;
            --leyu-shadow-sm: 0 2px 8px rgba(31, 94, 140, 0.06);
            --leyu-shadow: 0 4px 16px rgba(31, 94, 140, 0.08);
            --leyu-shadow-hover: 0 8px 24px rgba(31, 94, 140, 0.15);
            --leyu-radius: 12px;
            --leyu-radius-sm: 8px;
            --leyu-radius-lg: 16px;
            --leyu-font: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --leyu-font-num: "Arial", "Helvetica Neue", sans-serif;
            --leyu-spacing-section: 72px;
            --leyu-spacing-card: 28px;
            --leyu-transition: all 0.28s ease;
        }
        @media (max-width: 991.98px) {
            :root {
                --leyu-spacing-section: 56px;
                --leyu-spacing-card: 22px;
            }
        }
        @media (max-width: 575.98px) {
            :root {
                --leyu-spacing-section: 40px;
                --leyu-spacing-card: 18px;
            }
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--leyu-font);
            font-size: 16px;
            line-height: 1.75;
            color: var(--leyu-text);
            background-color: var(--leyu-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: var(--leyu-primary);
            text-decoration: none;
            transition: var(--leyu-transition);
        }
        a:hover {
            color: var(--leyu-primary-dark);
            text-decoration: none;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--leyu-primary);
            outline-offset: 3px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }
        /* ===== 导航（杂志刊头） ===== */
        .masthead {
            background: var(--leyu-white);
            border-bottom: 1px solid var(--leyu-border-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 1px 6px rgba(31, 94, 140, 0.04);
        }
        .masthead-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 14px 0;
            flex-wrap: wrap;
        }
        .masthead-brand {
            font-size: 28px;
            font-weight: 700;
            color: var(--leyu-primary);
            letter-spacing: 1px;
            line-height: 1.2;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .masthead-brand .brand-icon {
            width: 40px;
            height: 40px;
            background: var(--leyu-primary);
            color: var(--leyu-white);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
        }
        .masthead-brand:hover {
            color: var(--leyu-primary-dark);
        }
        .masthead-toggler {
            display: none;
            background: none;
            border: 1px solid var(--leyu-border);
            border-radius: var(--leyu-radius-sm);
            padding: 8px 12px;
            font-size: 18px;
            color: var(--leyu-primary);
            cursor: pointer;
            transition: var(--leyu-transition);
        }
        .masthead-toggler:hover {
            background: var(--leyu-primary-light);
            border-color: var(--leyu-primary);
        }
        .masthead-nav-wrap {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
        }
        .masthead-divider {
            width: 1px;
            height: 30px;
            background: var(--leyu-border);
            margin: 0 2px;
        }
        .masthead-nav {
            display: flex;
            align-items: center;
            gap: 18px;
            flex-wrap: wrap;
        }
        .masthead-nav a {
            font-size: 15px;
            font-weight: 500;
            color: var(--leyu-text);
            padding: 6px 2px;
            position: relative;
            white-space: nowrap;
            border-bottom: 2px solid transparent;
        }
        .masthead-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background: var(--leyu-primary);
            transition: var(--leyu-transition);
        }
        .masthead-nav a:hover::after,
        .masthead-nav a.active::after {
            width: 100%;
        }
        .masthead-nav a.active {
            color: var(--leyu-primary);
            font-weight: 600;
        }
        .masthead-nav a:hover {
            color: var(--leyu-primary-dark);
        }
        .masthead-cta {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .masthead-cta .btn-subscribe {
            background: var(--leyu-primary);
            color: var(--leyu-white);
            border: none;
            border-radius: var(--leyu-radius-sm);
            padding: 9px 18px;
            font-size: 14px;
            font-weight: 600;
            transition: var(--leyu-transition);
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
        }
        .masthead-cta .btn-subscribe:hover {
            background: var(--leyu-primary-dark);
            color: var(--leyu-white);
            transform: scale(1.03);
        }
        @media (max-width: 991.98px) {
            .masthead-toggler {
                display: block;
            }
            .masthead-nav-wrap {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding-top: 12px;
                border-top: 1px solid var(--leyu-border-light);
            }
            .masthead-nav-wrap.open {
                display: flex;
            }
            .masthead-nav {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
                width: 100%;
            }
            .masthead-nav a {
                width: 100%;
                padding: 8px 4px;
                border-bottom: 1px solid var(--leyu-border-light);
            }
            .masthead-divider {
                display: none;
            }
            .masthead-cta {
                width: 100%;
                padding-bottom: 8px;
            }
            .masthead-cta .btn-subscribe {
                width: 100%;
                justify-content: center;
            }
        }
        /* ===== 分类页 Hero ===== */
        .category-hero {
            background: linear-gradient(135deg, #EDF4F9 0%, #E1EDF5 45%, #F7FBFD 100%);
            padding: 56px 0 52px;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--leyu-border-light);
        }
        .category-hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -5%;
            width: 520px;
            height: 520px;
            background: radial-gradient(circle, rgba(31, 94, 140, 0.07) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -8%;
            width: 480px;
            height: 480px;
            background: radial-gradient(circle, rgba(242, 153, 74, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-hero .breadcrumb-custom {
            position: relative;
            z-index: 2;
            font-size: 14px;
            color: var(--leyu-text-muted);
            margin-bottom: 18px;
        }
        .category-hero .breadcrumb-custom a {
            color: var(--leyu-primary);
        }
        .category-hero .breadcrumb-custom .separator {
            margin: 0 8px;
            color: var(--leyu-border);
        }
        .category-hero h1 {
            position: relative;
            z-index: 2;
            font-size: 34px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--leyu-text);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .category-hero .hero-sub {
            position: relative;
            z-index: 2;
            font-size: 17px;
            color: var(--leyu-text-muted);
            max-width: 780px;
            line-height: 1.85;
            margin-bottom: 0;
        }
        .category-hero .hero-badge {
            position: relative;
            z-index: 2;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--leyu-white);
            border: 1px solid var(--leyu-border);
            border-radius: 50px;
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 500;
            color: var(--leyu-primary);
            margin-bottom: 18px;
            box-shadow: var(--leyu-shadow-sm);
        }
        .category-hero .hero-badge i {
            color: var(--leyu-accent);
        }
        @media (max-width: 575.98px) {
            .category-hero {
                padding: 36px 0 32px;
            }
            .category-hero h1 {
                font-size: 26px;
            }
            .category-hero .hero-sub {
                font-size: 15px;
            }
        }
        /* ===== 通用 Section ===== */
        .section-block {
            padding: var(--leyu-spacing-section) 0;
        }
        .section-block.alt-bg {
            background: var(--leyu-bg-soft);
        }
        .section-block.no-top-padding {
            padding-top: 0;
        }
        .section-heading {
            margin-bottom: 32px;
        }
        .section-heading h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--leyu-text);
            margin-bottom: 8px;
            letter-spacing: 0.3px;
        }
        .section-heading p {
            font-size: 16px;
            color: var(--leyu-text-muted);
            margin-bottom: 0;
            max-width: 720px;
        }
        .section-heading .heading-line {
            display: inline-block;
            width: 40px;
            height: 3px;
            background: var(--leyu-accent);
            border-radius: 2px;
            margin-bottom: 12px;
        }
        @media (max-width: 575.98px) {
            .section-heading h2 {
                font-size: 22px;
            }
        }
        /* ===== 数据报告列表卡片 ===== */
        .data-list-card {
            display: flex;
            gap: 20px;
            background: var(--leyu-white);
            border-radius: var(--leyu-radius);
            box-shadow: var(--leyu-shadow);
            padding: 20px;
            transition: var(--leyu-transition);
            border: 1px solid var(--leyu-border-light);
            height: 100%;
        }
        .data-list-card:hover {
            box-shadow: var(--leyu-shadow-hover);
            transform: translateY(-3px);
            border-color: var(--leyu-border);
        }
        .data-list-card .card-img-wrap {
            flex-shrink: 0;
            width: 180px;
            height: 130px;
            border-radius: var(--leyu-radius-sm);
            overflow: hidden;
            background: var(--leyu-bg-soft);
        }
        .data-list-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--leyu-transition);
        }
        .data-list-card:hover .card-img-wrap img {
            transform: scale(1.04);
        }
        .data-list-card .card-body {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            padding: 0;
        }
        .data-list-card .card-category {
            font-size: 12px;
            font-weight: 600;
            color: var(--leyu-primary);
            background: var(--leyu-primary-light);
            border-radius: 50px;
            padding: 2px 10px;
            display: inline-block;
            margin-bottom: 8px;
            align-self: flex-start;
        }
        .data-list-card .card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--leyu-text);
            margin-bottom: 6px;
            line-height: 1.45;
        }
        .data-list-card .card-title a {
            color: var(--leyu-text);
        }
        .data-list-card .card-title a:hover {
            color: var(--leyu-primary);
        }
        .data-list-card .card-summary {
            font-size: 14px;
            color: var(--leyu-text-muted);
            line-height: 1.7;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .data-list-card .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 13px;
            color: var(--leyu-text-muted);
        }
        .data-list-card .card-meta i {
            margin-right: 4px;
            color: var(--leyu-primary);
        }
        @media (max-width: 767.98px) {
            .data-list-card {
                flex-direction: column;
            }
            .data-list-card .card-img-wrap {
                width: 100%;
                height: 180px;
            }
        }
        /* ===== 排行样式 ===== */
        .rank-list {
            background: var(--leyu-white);
            border-radius: var(--leyu-radius);
            box-shadow: var(--leyu-shadow);
            border: 1px solid var(--leyu-border-light);
            overflow: hidden;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 20px;
            border-bottom: 1px solid var(--leyu-border-light);
            transition: var(--leyu-transition);
        }
        .rank-item:last-child {
            border-bottom: none;
        }
        .rank-item:hover {
            background: var(--leyu-bg-soft);
        }
        .rank-number {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--leyu-primary-light);
            color: var(--leyu-primary);
            font-weight: 700;
            font-size: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-family: var(--leyu-font-num);
        }
        .rank-item:nth-child(1) .rank-number {
            background: var(--leyu-accent);
            color: var(--leyu-white);
        }
        .rank-item:nth-child(2) .rank-number {
            background: #F2C94C;
            color: var(--leyu-white);
        }
        .rank-item:nth-child(3) .rank-number {
            background: #B8C4CE;
            color: var(--leyu-white);
        }
        .rank-item .rank-info {
            flex: 1;
            min-width: 0;
        }
        .rank-item .rank-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--leyu-text);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .rank-item .rank-meta {
            font-size: 12px;
            color: var(--leyu-text-muted);
            margin-top: 2px;
        }
        .rank-item .rank-hot {
            font-size: 13px;
            color: var(--leyu-accent);
            font-weight: 600;
            white-space: nowrap;
            font-family: var(--leyu-font-num);
        }
        .rank-item .rank-hot i {
            margin-right: 4px;
        }
        /* ===== 专题推荐大卡片 ===== */
        .topic-card {
            background: var(--leyu-white);
            border-radius: var(--leyu-radius-lg);
            overflow: hidden;
            box-shadow: var(--leyu-shadow);
            border: 1px solid var(--leyu-border-light);
            transition: var(--leyu-transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .topic-card:hover {
            box-shadow: var(--leyu-shadow-hover);
            transform: translateY(-3px);
        }
        .topic-card .topic-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: var(--leyu-transition);
        }
        .topic-card:hover .topic-img {
            transform: scale(1.03);
        }
        .topic-card .topic-body {
            padding: 22px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .topic-card .topic-tag {
            font-size: 12px;
            font-weight: 600;
            color: var(--leyu-accent);
            background: rgba(242, 153, 74, 0.1);
            border-radius: 50px;
            padding: 3px 12px;
            display: inline-block;
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .topic-card .topic-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--leyu-text);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .topic-card .topic-desc {
            font-size: 14px;
            color: var(--leyu-text-muted);
            line-height: 1.75;
            flex: 1;
            margin-bottom: 12px;
        }
        .topic-card .topic-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--leyu-primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .topic-card .topic-link i {
            transition: var(--leyu-transition);
        }
        .topic-card .topic-link:hover i {
            transform: translateX(4px);
        }
        @media (max-width: 575.98px) {
            .topic-card .topic-img {
                height: 160px;
            }
        }
        /* ===== 数据来源/方法论 ===== */
        .method-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 20px;
        }
        .method-item {
            background: var(--leyu-white);
            border-radius: var(--leyu-radius);
            padding: 24px;
            box-shadow: var(--leyu-shadow);
            border: 1px solid var(--leyu-border-light);
            transition: var(--leyu-transition);
        }
        .method-item:hover {
            box-shadow: var(--leyu-shadow-hover);
            transform: translateY(-2px);
        }
        .method-item .method-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: var(--leyu-primary-light);
            color: var(--leyu-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            margin-bottom: 14px;
        }
        .method-item h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--leyu-text);
            margin-bottom: 8px;
        }
        .method-item p {
            font-size: 14px;
            color: var(--leyu-text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }
        /* ===== FAQ 手风琴 ===== */
        .faq-accordion .accordion-item {
            border: 1px solid var(--leyu-border-light);
            border-radius: var(--leyu-radius-sm) !important;
            margin-bottom: 10px;
            overflow: hidden;
            box-shadow: var(--leyu-shadow-sm);
            background: var(--leyu-white);
        }
        .faq-accordion .accordion-button {
            background: var(--leyu-bg-soft);
            color: var(--leyu-text);
            font-weight: 600;
            font-size: 16px;
            padding: 18px 22px;
            border: none;
            box-shadow: none;
            transition: var(--leyu-transition);
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            background: var(--leyu-primary-light);
            color: var(--leyu-primary);
            box-shadow: none;
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            outline: 2px solid var(--leyu-primary);
            outline-offset: -2px;
        }
        .faq-accordion .accordion-button::after {
            filter: brightness(0.6);
        }
        .faq-accordion .accordion-body {
            padding: 18px 22px;
            font-size: 15px;
            line-height: 1.8;
            color: var(--leyu-text-muted);
            background: var(--leyu-white);
        }
        /* ===== 订阅表单 ===== */
        .subscribe-card {
            background: var(--leyu-primary-light);
            border-radius: var(--leyu-radius-lg);
            padding: 40px;
            border: 1px solid var(--leyu-border);
            box-shadow: var(--leyu-shadow);
            position: relative;
            overflow: hidden;
        }
        .subscribe-card::before {
            content: '';
            position: absolute;
            top: -20%;
            right: -5%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(31, 94, 140, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .subscribe-card h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--leyu-text);
            margin-bottom: 8px;
            position: relative;
            z-index: 2;
        }
        .subscribe-card p {
            font-size: 15px;
            color: var(--leyu-text-muted);
            margin-bottom: 24px;
            position: relative;
            z-index: 2;
            max-width: 560px;
        }
        .subscribe-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            position: relative;
            z-index: 2;
        }
        .subscribe-form .form-control {
            flex: 1;
            min-width: 200px;
            border: 1px solid var(--leyu-border);
            border-radius: var(--leyu-radius-sm);
            padding: 12px 16px;
            font-size: 15px;
            background: var(--leyu-white);
            color: var(--leyu-text);
            transition: var(--leyu-transition);
        }
        .subscribe-form .form-control:focus {
            border-color: var(--leyu-primary);
            box-shadow: 0 0 0 3px rgba(31, 94, 140, 0.1);
        }
        .subscribe-form .btn-submit {
            background: var(--leyu-primary);
            color: var(--leyu-white);
            border: none;
            border-radius: var(--leyu-radius-sm);
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--leyu-transition);
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .subscribe-form .btn-submit:hover {
            background: var(--leyu-primary-dark);
            color: var(--leyu-white);
            transform: scale(1.02);
        }
        .subscribe-trust {
            font-size: 13px;
            color: var(--leyu-text-muted);
            margin-top: 12px;
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .subscribe-trust i {
            color: var(--leyu-accent-green);
        }
        @media (max-width: 575.98px) {
            .subscribe-card {
                padding: 28px 20px;
            }
            .subscribe-form {
                flex-direction: column;
            }
            .subscribe-form .btn-submit {
                width: 100%;
                justify-content: center;
            }
        }
        /* ===== 数据来源标签 ===== */
        .partner-row {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            justify-content: flex-start;
        }
        .partner-tag {
            background: var(--leyu-white);
            border: 1px solid var(--leyu-border);
            border-radius: 50px;
            padding: 8px 18px;
            font-size: 14px;
            font-weight: 500;
            color: var(--leyu-text-muted);
            transition: var(--leyu-transition);
        }
        .partner-tag:hover {
            border-color: var(--leyu-primary);
            color: var(--leyu-primary);
            box-shadow: var(--leyu-shadow-sm);
        }
        /* ===== 分类入口矩阵 ===== */
        .category-matrix {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 16px;
        }
        .category-matrix .matrix-item {
            background: var(--leyu-white);
            border: 1px solid var(--leyu-border-light);
            border-radius: var(--leyu-radius);
            padding: 18px 20px;
            display: flex;
            align-items: center;
            gap: 12px;
            transition: var(--leyu-transition);
            box-shadow: var(--leyu-shadow-sm);
        }
        .category-matrix .matrix-item:hover {
            box-shadow: var(--leyu-shadow-hover);
            border-color: var(--leyu-border);
            transform: translateY(-2px);
        }
        .category-matrix .matrix-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--leyu-primary-light);
            color: var(--leyu-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            flex-shrink: 0;
        }
        .category-matrix .matrix-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--leyu-text);
        }
        .category-matrix .matrix-arrow {
            margin-left: auto;
            color: var(--leyu-text-muted);
            font-size: 14px;
        }
        /* ===== 页脚 ===== */
        .site-footer {
            background: #203A4D;
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 0;
            font-size: 14px;
        }
        .site-footer a {
            color: rgba(255, 255, 255, 0.75);
            transition: var(--leyu-transition);
        }
        .site-footer a:hover {
            color: var(--leyu-white);
            text-decoration: none;
        }
        .site-footer .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .site-footer .footer-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--leyu-white);
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .site-footer .footer-logo i {
            color: var(--leyu-accent);
        }
        .site-footer .footer-desc {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            line-height: 1.8;
            max-width: 320px;
        }
        .site-footer .footer-col h4 {
            color: var(--leyu-white);
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .site-footer .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 10px;
        }
        .site-footer .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            padding: 20px 0 24px;
        }
        .site-footer .footer-legal {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
        }
        @media (max-width: 991.98px) {
            .site-footer .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 575.98px) {
            .site-footer .footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        /* ===== 辅助工具类 ===== */
        .text-primary-leyu {
            color: var(--leyu-primary) !important;
        }
        .bg-primary-leyu {
            background-color: var(--leyu-primary) !important;
        }
        .fw-bold {
            font-weight: 700 !important;
        }
        .shadow-leyu {
            box-shadow: var(--leyu-shadow) !important;
        }
        .rounded-leyu {
            border-radius: var(--leyu-radius) !important;
        }
        .mb-4-custom {
            margin-bottom: 1.5rem !important;
        }
        .gap-2-5 {
            gap: 10px !important;
        }

/* roulang page: category1 */
:root {
            --leyu-primary: #1F5E8C;
            --leyu-primary-dark: #174A70;
            --leyu-primary-light: #EAF2F8;
            --leyu-accent: #F2994A;
            --leyu-accent-green: #6FCF97;
            --leyu-bg: #F5F9FC;
            --leyu-bg-soft: #EEF4F9;
            --leyu-white: #ffffff;
            --leyu-text: #1A2B3C;
            --leyu-text-muted: #5A6F80;
            --leyu-border: #DCE5EC;
            --leyu-border-light: #E8EEF4;
            --leyu-shadow-sm: 0 2px 8px rgba(31, 94, 140, 0.06);
            --leyu-shadow: 0 4px 16px rgba(31, 94, 140, 0.08);
            --leyu-shadow-hover: 0 8px 24px rgba(31, 94, 140, 0.15);
            --leyu-radius: 12px;
            --leyu-radius-sm: 8px;
            --leyu-radius-lg: 16px;
            --leyu-font: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --leyu-font-num: "Arial", "Helvetica Neue", sans-serif;
            --leyu-spacing-section: 88px;
            --leyu-spacing-card: 28px;
            --leyu-transition: all 0.28s ease;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--leyu-font);
            font-size: 16px;
            line-height: 1.75;
            color: var(--leyu-text);
            background-color: var(--leyu-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--leyu-primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ===== Header / Masthead ===== */
        .masthead {
            background: var(--leyu-white);
            border-bottom: 1px solid var(--leyu-border);
            padding: 18px 0;
            position: sticky;
            top: 0;
            z-index: 1030;
            box-shadow: 0 2px 12px rgba(31, 94, 140, 0.06);
        }

        .masthead-inner {
            display: flex;
            align-items: center;
            gap: 24px;
            flex-wrap: wrap;
        }

        .masthead-brand {
            font-size: 30px;
            font-weight: 700;
            color: var(--leyu-primary);
            letter-spacing: 1px;
            line-height: 1.2;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .masthead-brand .brand-icon {
            width: 40px;
            height: 40px;
            background: var(--leyu-primary);
            color: var(--leyu-white);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
        }

        .masthead-brand:hover {
            color: var(--leyu-primary-dark);
        }

        .masthead-nav-wrap {
            display: flex;
            align-items: center;
            gap: 22px;
            flex-wrap: wrap;
            flex: 1;
            justify-content: flex-end;
        }

        .masthead-divider {
            width: 1px;
            height: 30px;
            background: var(--leyu-border);
            margin: 0 4px;
        }

        .masthead-nav {
            display: flex;
            align-items: center;
            gap: 18px;
            flex-wrap: wrap;
        }

        .masthead-nav a {
            font-size: 15px;
            font-weight: 500;
            color: var(--leyu-text);
            padding: 6px 2px;
            position: relative;
            white-space: nowrap;
            border-bottom: 2px solid transparent;
        }

        .masthead-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background: var(--leyu-primary);
            transition: var(--leyu-transition);
        }

        .masthead-nav a:hover::after,
        .masthead-nav a.active::after {
            width: 100%;
        }

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

        .masthead-nav a:hover {
            color: var(--leyu-primary-dark);
        }

        .masthead-cta {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .masthead-cta .btn-subscribe {
            background: var(--leyu-primary);
            color: var(--leyu-white);
            border: none;
            border-radius: var(--leyu-radius-sm);
            padding: 9px 18px;
            font-size: 14px;
            font-weight: 600;
            transition: var(--leyu-transition);
            white-space: nowrap;
        }

        .masthead-cta .btn-subscribe:hover {
            background: var(--leyu-primary-dark);
            color: var(--leyu-white);
            transform: scale(1.03);
        }

        .masthead-toggler {
            display: none;
            background: var(--leyu-primary-light);
            color: var(--leyu-primary);
            border: 1px solid var(--leyu-border);
            border-radius: var(--leyu-radius-sm);
            font-size: 20px;
            padding: 8px 14px;
            cursor: pointer;
            transition: var(--leyu-transition);
        }

        .masthead-toggler:hover {
            background: var(--leyu-primary);
            color: var(--leyu-white);
        }

        /* ===== Hero Category ===== */
        .hero-category {
            position: relative;
            background: linear-gradient(135deg, #EEF4F9 0%, #E0ECF4 45%, #F5F9FC 100%);
            padding: 64px 0 72px;
            overflow: hidden;
        }

        .hero-category::before {
            content: '';
            position: absolute;
            top: -35%;
            right: -8%;
            width: 550px;
            height: 550px;
            background: radial-gradient(circle, rgba(31, 94, 140, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-category::after {
            content: '';
            position: absolute;
            bottom: -25%;
            left: -6%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(242, 153, 74, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-category-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            align-items: center;
        }

        .hero-category-breadcrumb {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.72);
            border: 1px solid var(--leyu-border);
            border-radius: 30px;
            padding: 6px 16px;
            font-size: 13px;
            color: var(--leyu-text-muted);
            margin-bottom: 20px;
        }

        .hero-category-breadcrumb a {
            color: var(--leyu-primary);
            font-weight: 500;
        }

        .hero-category-breadcrumb .sep {
            color: var(--leyu-border);
        }

        .hero-category h1 {
            font-size: 38px;
            font-weight: 700;
            color: var(--leyu-text);
            line-height: 1.3;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }

        .hero-category .lead {
            font-size: 17px;
            color: var(--leyu-text-muted);
            line-height: 1.8;
            margin-bottom: 24px;
            max-width: 620px;
        }

        .hero-category-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-primary-leyu {
            background: var(--leyu-primary);
            color: var(--leyu-white);
            border: none;
            border-radius: var(--leyu-radius-sm);
            padding: 12px 26px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--leyu-transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary-leyu:hover {
            background: var(--leyu-primary-dark);
            color: var(--leyu-white);
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(31, 94, 140, 0.25);
        }

        .btn-outline-leyu {
            background: transparent;
            color: var(--leyu-primary);
            border: 1.5px solid var(--leyu-primary);
            border-radius: var(--leyu-radius-sm);
            padding: 11px 24px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--leyu-transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

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

        .hero-category-visual {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .hero-cat-stat-card {
            background: var(--leyu-white);
            border-radius: var(--leyu-radius);
            box-shadow: var(--leyu-shadow);
            padding: 20px 22px;
            transition: var(--leyu-transition);
        }

        .hero-cat-stat-card:hover {
            box-shadow: var(--leyu-shadow-hover);
            transform: translateY(-3px);
        }

        .hero-cat-stat-card .stat-icon {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            margin-bottom: 12px;
        }

        .hero-cat-stat-card .stat-icon.blue {
            background: var(--leyu-primary-light);
            color: var(--leyu-primary);
        }

        .hero-cat-stat-card .stat-icon.orange {
            background: rgba(242, 153, 74, 0.12);
            color: var(--leyu-accent);
        }

        .hero-cat-stat-card .stat-icon.green {
            background: rgba(111, 207, 151, 0.14);
            color: #2E9E5B;
        }

        .hero-cat-stat-card .stat-icon.purple {
            background: rgba(120, 100, 180, 0.12);
            color: #6B5CA0;
        }

        .hero-cat-stat-card .stat-number {
            font-family: var(--leyu-font-num);
            font-size: 28px;
            font-weight: 700;
            color: var(--leyu-text);
            line-height: 1.2;
        }

        .hero-cat-stat-card .stat-label {
            font-size: 13px;
            color: var(--leyu-text-muted);
            margin-top: 4px;
        }

        /* ===== Section Base ===== */
        .section-block {
            padding: var(--leyu-spacing-section) 0;
        }

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

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

        .section-header {
            margin-bottom: 36px;
        }

        .section-header h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--leyu-text);
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }

        .section-header p {
            font-size: 16px;
            color: var(--leyu-text-muted);
            margin-bottom: 0;
        }

        .section-header .section-tag {
            display: inline-block;
            background: var(--leyu-primary-light);
            color: var(--leyu-primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }

        /* ===== Article List Cards ===== */
        .article-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .article-card {
            background: var(--leyu-white);
            border-radius: var(--leyu-radius);
            box-shadow: var(--leyu-shadow);
            overflow: hidden;
            transition: var(--leyu-transition);
            display: flex;
            flex-direction: column;
        }

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

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

        .article-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--leyu-transition);
        }

        .article-card:hover .article-card-img img {
            transform: scale(1.06);
        }

        .article-card-img .article-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--leyu-primary);
            color: var(--leyu-white);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            z-index: 2;
        }

        .article-card-img .article-tag.accent {
            background: var(--leyu-accent);
        }

        .article-card-img .article-tag.green {
            background: #4CAF7D;
        }

        .article-card-body {
            padding: 22px 24px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .article-card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--leyu-text);
            line-height: 1.45;
            margin-bottom: 10px;
        }

        .article-card-body h3 a {
            color: var(--leyu-text);
        }

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

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

        .article-card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 13px;
            color: var(--leyu-text-muted);
            padding-top: 12px;
            border-top: 1px solid var(--leyu-border-light);
        }

        .article-card-meta .read-link {
            margin-left: auto;
            color: var(--leyu-primary);
            font-weight: 600;
            font-size: 13px;
            white-space: nowrap;
        }

        .article-card-meta .read-link:hover {
            color: var(--leyu-primary-dark);
        }

        /* ===== Hot Ranking ===== */
        .hot-ranking {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            align-items: start;
        }

        .ranking-panel {
            background: var(--leyu-white);
            border-radius: var(--leyu-radius);
            box-shadow: var(--leyu-shadow);
            padding: 28px 24px;
            transition: var(--leyu-transition);
        }

        .ranking-panel:hover {
            box-shadow: var(--leyu-shadow-hover);
        }

        .ranking-panel .ranking-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--leyu-text);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .ranking-panel .ranking-title i {
            color: var(--leyu-accent);
        }

        .ranking-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .ranking-list li {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 10px 12px;
            border-radius: var(--leyu-radius-sm);
            transition: var(--leyu-transition);
            cursor: default;
        }

        .ranking-list li:hover {
            background: var(--leyu-bg-soft);
        }

        .ranking-list .rank-num {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: var(--leyu-bg-soft);
            color: var(--leyu-primary);
            font-weight: 700;
            font-family: var(--leyu-font-num);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex-shrink: 0;
        }

        .ranking-list li:nth-child(1) .rank-num {
            background: var(--leyu-accent);
            color: var(--leyu-white);
        }

        .ranking-list li:nth-child(2) .rank-num {
            background: #C9D8E8;
            color: var(--leyu-text);
        }

        .ranking-list li:nth-child(3) .rank-num {
            background: #E8C9A8;
            color: #8B6B4A;
        }

        .ranking-list .rank-info {
            flex: 1;
        }

        .ranking-list .rank-info .rank-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--leyu-text);
            line-height: 1.4;
        }

        .ranking-list .rank-info .rank-detail {
            font-size: 13px;
            color: var(--leyu-text-muted);
        }

        .ranking-list .rank-tag {
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 14px;
            white-space: nowrap;
        }

        .ranking-list .rank-tag.hot {
            background: rgba(242, 153, 74, 0.14);
            color: #D9791E;
        }

        .ranking-list .rank-tag.live {
            background: rgba(111, 207, 151, 0.16);
            color: #2E9E5B;
        }

        .ranking-list .rank-tag.soon {
            background: var(--leyu-primary-light);
            color: var(--leyu-primary);
        }

        /* ===== Special Topics ===== */
        .special-topics {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .special-topic-card {
            background: var(--leyu-white);
            border-radius: var(--leyu-radius);
            box-shadow: var(--leyu-shadow);
            overflow: hidden;
            transition: var(--leyu-transition);
            display: flex;
            flex-direction: column;
        }

        .special-topic-card:hover {
            box-shadow: var(--leyu-shadow-hover);
            transform: translateY(-4px);
        }

        .special-topic-img {
            aspect-ratio: 21 / 9;
            overflow: hidden;
            background: var(--leyu-bg-soft);
        }

        .special-topic-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--leyu-transition);
        }

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

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

        .special-topic-body h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--leyu-text);
            margin-bottom: 8px;
        }

        .special-topic-body p {
            font-size: 14px;
            color: var(--leyu-text-muted);
            line-height: 1.7;
            margin-bottom: 14px;
            flex: 1;
        }

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

        .special-topic-body .topic-link:hover {
            color: var(--leyu-primary-dark);
        }

        /* ===== Data Snapshot ===== */
        .data-snapshot {
            background: var(--leyu-white);
            border-radius: var(--leyu-radius);
            box-shadow: var(--leyu-shadow);
            padding: 32px 28px;
        }

        .data-snapshot .snapshot-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
            flex-wrap: wrap;
            gap: 12px;
        }

        .data-snapshot .snapshot-header h2 {
            font-size: 20px;
            font-weight: 700;
            color: var(--leyu-text);
            margin: 0;
        }

        .data-snapshot .snapshot-badge {
            background: var(--leyu-primary-light);
            color: var(--leyu-primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 18px;
        }

        .data-bars {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .data-bar-item {
            text-align: center;
            padding: 14px 10px;
            border-radius: var(--leyu-radius-sm);
            background: var(--leyu-bg-soft);
            transition: var(--leyu-transition);
        }

        .data-bar-item:hover {
            background: var(--leyu-primary-light);
        }

        .data-bar-item .bar-value {
            font-family: var(--leyu-font-num);
            font-size: 24px;
            font-weight: 700;
            color: var(--leyu-primary);
            line-height: 1.3;
        }

        .data-bar-item .bar-label {
            font-size: 13px;
            color: var(--leyu-text-muted);
            margin-top: 4px;
        }

        /* ===== Channel Matrix ===== */
        .channel-matrix {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 18px;
        }

        .channel-card {
            background: var(--leyu-white);
            border-radius: var(--leyu-radius);
            box-shadow: var(--leyu-shadow);
            padding: 24px 18px;
            text-align: center;
            transition: var(--leyu-transition);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
        }

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

        .channel-card .channel-icon {
            width: 46px;
            height: 46px;
            border-radius: 12px;
            background: var(--leyu-primary-light);
            color: var(--leyu-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
        }

        .channel-card .channel-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--leyu-text);
        }

        .channel-card .channel-desc {
            font-size: 12px;
            color: var(--leyu-text-muted);
            line-height: 1.5;
        }

        /* ===== FAQ ===== */
        .faq-section .accordion-item {
            border: none;
            border-radius: var(--leyu-radius-sm) !important;
            margin-bottom: 10px;
            overflow: hidden;
            box-shadow: var(--leyu-shadow-sm);
            background: var(--leyu-white);
        }

        .faq-section .accordion-button {
            background: var(--leyu-primary-light);
            color: var(--leyu-text);
            font-weight: 600;
            font-size: 15px;
            padding: 16px 22px;
            border-radius: var(--leyu-radius-sm) !important;
            transition: var(--leyu-transition);
        }

        .faq-section .accordion-button:not(.collapsed) {
            background: var(--leyu-primary);
            color: var(--leyu-white);
            border-radius: var(--leyu-radius-sm) var(--leyu-radius-sm) 0 0 !important;
        }

        .faq-section .accordion-button:focus {
            box-shadow: none;
            outline: 2px solid var(--leyu-primary);
            outline-offset: -2px;
        }

        .faq-section .accordion-button::after {
            filter: brightness(0) invert(0.3);
        }

        .faq-section .accordion-button:not(.collapsed)::after {
            filter: brightness(0) invert(1);
        }

        .faq-section .accordion-body {
            background: var(--leyu-white);
            padding: 18px 22px;
            font-size: 14px;
            color: var(--leyu-text-muted);
            line-height: 1.8;
        }

        /* ===== CTA Form ===== */
        .cta-form-section {
            background: linear-gradient(135deg, var(--leyu-primary) 0%, #174A70 100%);
            border-radius: var(--leyu-radius-lg);
            padding: 44px 40px;
            position: relative;
            overflow: hidden;
        }

        .cta-form-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-form-section::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -15%;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(242, 153, 74, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-form-section .cta-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: center;
        }

        .cta-form-section .cta-text h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--leyu-white);
            margin-bottom: 12px;
            line-height: 1.35;
        }

        .cta-form-section .cta-text p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.78);
            line-height: 1.75;
            margin-bottom: 0;
        }

        .cta-form-card {
            background: var(--leyu-white);
            border-radius: var(--leyu-radius);
            padding: 28px 26px;
            box-shadow: 0 10px 28px rgba(0, 0, 0, 0.18);
        }

        .cta-form-card .form-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--leyu-text);
            margin-bottom: 6px;
        }

        .cta-form-card .form-control {
            border: 1.5px solid var(--leyu-border);
            border-radius: var(--leyu-radius-sm);
            padding: 11px 14px;
            font-size: 14px;
            transition: var(--leyu-transition);
            background: var(--leyu-bg-soft);
            color: var(--leyu-text);
        }

        .cta-form-card .form-control:focus {
            border-color: var(--leyu-primary);
            box-shadow: 0 0 0 3px rgba(31, 94, 140, 0.12);
            background: var(--leyu-white);
        }

        .cta-form-card .btn-submit-leyu {
            background: var(--leyu-accent);
            color: var(--leyu-white);
            border: none;
            border-radius: var(--leyu-radius-sm);
            padding: 12px 26px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--leyu-transition);
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .cta-form-card .btn-submit-leyu:hover {
            background: #E0802A;
            color: var(--leyu-white);
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(242, 153, 74, 0.35);
        }

        .cta-form-card .trust-note {
            font-size: 12px;
            color: var(--leyu-text-muted);
            text-align: center;
            margin-top: 12px;
            margin-bottom: 0;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #203A4D;
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 0;
            margin-top: 64px;
        }

        .site-footer .footer-top {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .site-footer .footer-brand .footer-logo {
            font-size: 24px;
            font-weight: 700;
            color: var(--leyu-white);
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }

        .site-footer .footer-brand .footer-logo i {
            color: var(--leyu-accent);
        }

        .site-footer .footer-desc {
            font-size: 14px;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 0;
            max-width: 320px;
        }

        .site-footer .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--leyu-white);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .site-footer .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .site-footer .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            transition: var(--leyu-transition);
        }

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

        .site-footer .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            padding: 20px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
        }

        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 13px;
        }

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

        .site-footer .footer-legal {
            display: flex;
            align-items: center;
            gap: 18px;
            flex-wrap: wrap;
        }

        /* ===== Responsive ===== */
        @media (max-width: 991px) {
            .masthead-nav-wrap {
                gap: 16px;
            }

            .masthead-nav {
                gap: 12px;
            }

            .masthead-nav a {
                font-size: 14px;
            }

            .masthead-brand {
                font-size: 24px;
            }

            .hero-category-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .hero-category h1 {
                font-size: 30px;
            }

            .article-list {
                grid-template-columns: 1fr;
            }

            .hot-ranking {
                grid-template-columns: 1fr;
            }

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

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

            .channel-matrix {
                grid-template-columns: repeat(3, 1fr);
            }

            .cta-form-section .cta-inner {
                grid-template-columns: 1fr;
            }

            .site-footer .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }

            :root {
                --leyu-spacing-section: 64px;
            }
        }

        @media (max-width: 767px) {
            .masthead-brand {
                font-size: 22px;
            }

            .masthead-brand .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 16px;
            }

            .masthead-toggler {
                display: flex;
                align-items: center;
                justify-content: center;
                margin-left: auto;
            }

            .masthead-nav-wrap {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding-top: 14px;
                border-top: 1px solid var(--leyu-border);
                margin-top: 12px;
            }

            .masthead-nav-wrap.show {
                display: flex;
            }

            .masthead-divider {
                display: none;
            }

            .masthead-nav {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
                width: 100%;
            }

            .masthead-nav a {
                padding: 8px 0;
                width: 100%;
                border-bottom: 1px solid var(--leyu-border-light);
            }

            .masthead-nav a::after {
                display: none;
            }

            .masthead-cta {
                width: 100%;
                margin-top: 6px;
            }

            .masthead-cta .btn-subscribe {
                width: 100%;
                text-align: center;
                justify-content: center;
            }

            .hero-category {
                padding: 40px 0 48px;
            }

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

            .hero-category .lead {
                font-size: 15px;
            }

            .hero-category-visual {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .hero-cat-stat-card {
                padding: 16px 14px;
            }

            .hero-cat-stat-card .stat-number {
                font-size: 22px;
            }

            .section-header h2 {
                font-size: 22px;
            }

            .data-bars {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }

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

            .cta-form-section {
                padding: 28px 20px;
            }

            .cta-form-section .cta-text h2 {
                font-size: 22px;
            }

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

            .site-footer .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }

            .site-footer .footer-legal {
                gap: 10px;
            }

            :root {
                --leyu-spacing-section: 48px;
                --leyu-spacing-card: 20px;
            }
        }

        @media (max-width: 520px) {
            .hero-category h1 {
                font-size: 22px;
            }

            .hero-category-visual {
                grid-template-columns: 1fr;
            }

            .hero-category-actions {
                flex-direction: column;
                width: 100%;
            }

            .hero-category-actions .btn-primary-leyu,
            .hero-category-actions .btn-outline-leyu {
                width: 100%;
                justify-content: center;
            }

            .article-card-body {
                padding: 16px 16px 20px;
            }

            .article-card-body h3 {
                font-size: 16px;
            }

            .ranking-panel {
                padding: 20px 16px;
            }

            .data-bars {
                grid-template-columns: 1fr;
            }

            .channel-matrix {
                grid-template-columns: 1fr;
            }

            .special-topic-body {
                padding: 16px 16px 20px;
            }

            .cta-form-card {
                padding: 20px 16px;
            }
        }

/* roulang page: category3 */
:root {
            --leyu-primary: #1F5E8C;
            --leyu-primary-dark: #174A70;
            --leyu-primary-light: #EAF2F8;
            --leyu-accent: #F2994A;
            --leyu-accent-green: #6FCF97;
            --leyu-bg: #F5F9FC;
            --leyu-bg-soft: #EEF4F9;
            --leyu-white: #ffffff;
            --leyu-text: #1A2B3C;
            --leyu-text-muted: #5A6F80;
            --leyu-border: #DCE5EC;
            --leyu-border-light: #E8EEF4;
            --leyu-shadow-sm: 0 2px 8px rgba(31, 94, 140, 0.06);
            --leyu-shadow: 0 4px 16px rgba(31, 94, 140, 0.08);
            --leyu-shadow-hover: 0 8px 24px rgba(31, 94, 140, 0.15);
            --leyu-radius: 12px;
            --leyu-radius-sm: 8px;
            --leyu-radius-lg: 16px;
            --leyu-font: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --leyu-font-num: "Arial", "Helvetica Neue", sans-serif;
            --leyu-spacing-section: 72px;
            --leyu-spacing-card: 28px;
            --leyu-transition: all 0.28s ease;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--leyu-font);
            font-size: 16px;
            line-height: 1.75;
            color: var(--leyu-text);
            background-color: var(--leyu-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--leyu-primary);
            text-decoration: none;
            transition: var(--leyu-transition);
        }
        a:hover {
            color: var(--leyu-primary-dark);
            text-decoration: none;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--leyu-primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ===== 杂志刊头导航 ===== */
        .masthead {
            background: var(--leyu-white);
            border-bottom: 1px solid var(--leyu-border-light);
            padding: 14px 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: var(--leyu-shadow-sm);
        }
        .masthead-inner {
            display: flex;
            align-items: center;
            gap: 18px;
            flex-wrap: wrap;
        }
        .masthead-brand {
            font-size: 28px;
            font-weight: 700;
            color: var(--leyu-primary);
            letter-spacing: 1px;
            line-height: 1.2;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .masthead-brand .brand-icon {
            width: 40px;
            height: 40px;
            background: var(--leyu-primary);
            color: var(--leyu-white);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
        }
        .masthead-brand:hover {
            color: var(--leyu-primary-dark);
        }
        .masthead-toggler {
            display: none;
            background: none;
            border: 1px solid var(--leyu-border);
            border-radius: var(--leyu-radius-sm);
            padding: 8px 12px;
            font-size: 18px;
            color: var(--leyu-primary);
        }
        .masthead-nav-wrap {
            display: flex;
            align-items: center;
            gap: 18px;
            flex-wrap: wrap;
            flex: 1;
            justify-content: flex-start;
        }
        .masthead-divider {
            width: 1px;
            height: 30px;
            background: var(--leyu-border);
            margin: 0 4px;
        }
        .masthead-nav {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .masthead-nav a {
            font-size: 15px;
            font-weight: 500;
            color: var(--leyu-text);
            padding: 6px 2px;
            position: relative;
            white-space: nowrap;
            border-bottom: 2px solid transparent;
        }
        .masthead-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background: var(--leyu-primary);
            transition: var(--leyu-transition);
        }
        .masthead-nav a:hover::after,
        .masthead-nav a.active::after {
            width: 100%;
        }
        .masthead-nav a.active {
            color: var(--leyu-primary);
            font-weight: 600;
        }
        .masthead-nav a:hover {
            color: var(--leyu-primary-dark);
        }
        .masthead-cta {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-left: auto;
        }
        .masthead-cta .btn-subscribe {
            background: var(--leyu-primary);
            color: var(--leyu-white);
            border: none;
            border-radius: var(--leyu-radius-sm);
            padding: 9px 18px;
            font-size: 14px;
            font-weight: 600;
            transition: var(--leyu-transition);
            white-space: nowrap;
        }
        .masthead-cta .btn-subscribe:hover {
            background: var(--leyu-primary-dark);
            color: var(--leyu-white);
            transform: scale(1.03);
        }

        /* ===== 分类页 Hero ===== */
        .category-hero {
            background: linear-gradient(135deg, #EDF4F9 0%, #DDE9F2 45%, #F5F9FC 100%);
            padding: 56px 0 64px;
            position: relative;
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -12%;
            width: 480px;
            height: 480px;
            background: radial-gradient(circle, rgba(31, 94, 140, 0.07) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-hero .breadcrumb-wrap {
            font-size: 14px;
            color: var(--leyu-text-muted);
            margin-bottom: 18px;
        }
        .category-hero .breadcrumb-wrap a {
            color: var(--leyu-text-muted);
        }
        .category-hero .breadcrumb-wrap a:hover {
            color: var(--leyu-primary);
        }
        .category-hero h1 {
            font-size: 36px;
            font-weight: 700;
            color: var(--leyu-text);
            letter-spacing: 0.5px;
            line-height: 1.35;
            margin-bottom: 16px;
            position: relative;
            z-index: 2;
        }
        .category-hero .lead-text {
            font-size: 17px;
            color: var(--leyu-text-muted);
            max-width: 720px;
            line-height: 1.8;
            position: relative;
            z-index: 2;
        }
        .category-hero .hero-badge {
            display: inline-block;
            background: var(--leyu-primary);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        /* ===== 通用 Section ===== */
        .section-block {
            padding: var(--leyu-spacing-section) 0;
        }
        .section-block .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--leyu-text);
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }
        .section-block .section-desc {
            font-size: 16px;
            color: var(--leyu-text-muted);
            line-height: 1.8;
            margin-bottom: 28px;
            max-width: 720px;
        }
        .section-block .section-header {
            margin-bottom: 32px;
        }

        /* ===== 卡片通用 ===== */
        .leyu-card {
            background: var(--leyu-white);
            border-radius: var(--leyu-radius);
            box-shadow: var(--leyu-shadow);
            transition: var(--leyu-transition);
            border: 1px solid var(--leyu-border-light);
            overflow: hidden;
        }
        .leyu-card:hover {
            box-shadow: var(--leyu-shadow-hover);
            transform: translateY(-3px);
        }
        .leyu-card .card-img-wrap {
            overflow: hidden;
            border-radius: var(--leyu-radius) var(--leyu-radius) 0 0;
            aspect-ratio: 16/9;
            background: var(--leyu-bg-soft);
        }
        .leyu-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s ease;
        }
        .leyu-card:hover .card-img-wrap img {
            transform: scale(1.04);
        }
        .leyu-card .card-body {
            padding: 22px 24px;
        }
        .leyu-card .card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--leyu-primary);
            background: var(--leyu-primary-light);
            padding: 3px 10px;
            border-radius: 16px;
            margin-bottom: 10px;
        }
        .leyu-card .card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--leyu-text);
            line-height: 1.5;
            margin-bottom: 8px;
        }
        .leyu-card .card-desc {
            font-size: 15px;
            color: var(--leyu-text-muted);
            line-height: 1.7;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .leyu-card .card-meta {
            font-size: 13px;
            color: var(--leyu-text-muted);
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .leyu-card .card-meta i {
            color: var(--leyu-primary);
            margin-right: 4px;
        }

        /* ===== 文章列表 ===== */
        .article-list-item {
            display: flex;
            gap: 20px;
            background: var(--leyu-white);
            border-radius: var(--leyu-radius);
            box-shadow: var(--leyu-shadow-sm);
            border: 1px solid var(--leyu-border-light);
            padding: 18px;
            margin-bottom: 16px;
            transition: var(--leyu-transition);
        }
        .article-list-item:hover {
            box-shadow: var(--leyu-shadow-hover);
            transform: translateY(-2px);
        }
        .article-list-item .article-thumb {
            width: 220px;
            min-width: 220px;
            border-radius: var(--leyu-radius-sm);
            overflow: hidden;
            aspect-ratio: 16/10;
            background: var(--leyu-bg-soft);
        }
        .article-list-item .article-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .article-list-item:hover .article-thumb img {
            transform: scale(1.05);
        }
        .article-list-item .article-content {
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .article-list-item .article-date {
            font-size: 13px;
            color: var(--leyu-text-muted);
            margin-bottom: 6px;
        }
        .article-list-item .article-title {
            font-size: 19px;
            font-weight: 700;
            color: var(--leyu-text);
            line-height: 1.45;
            margin-bottom: 8px;
        }
        .article-list-item .article-title a {
            color: var(--leyu-text);
        }
        .article-list-item .article-title a:hover {
            color: var(--leyu-primary);
        }
        .article-list-item .article-excerpt {
            font-size: 15px;
            color: var(--leyu-text-muted);
            line-height: 1.7;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-list-item .article-actions {
            margin-top: auto;
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .article-list-item .article-actions a {
            font-size: 14px;
            font-weight: 600;
        }

        /* ===== 排行样式 ===== */
        .rank-list {
            list-style: none;
            padding: 0;
            margin: 0;
            counter-reset: rank;
        }
        .rank-list li {
            counter-increment: rank;
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 14px 0;
            border-bottom: 1px solid var(--leyu-border-light);
            transition: var(--leyu-transition);
        }
        .rank-list li:last-child {
            border-bottom: none;
        }
        .rank-list li:hover {
            padding-left: 6px;
        }
        .rank-list .rank-number {
            width: 36px;
            height: 36px;
            min-width: 36px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
            font-family: var(--leyu-font-num);
            color: var(--leyu-white);
            background: var(--leyu-primary);
        }
        .rank-list li:nth-child(1) .rank-number {
            background: var(--leyu-accent);
        }
        .rank-list li:nth-child(2) .rank-number {
            background: #e8894a;
        }
        .rank-list li:nth-child(3) .rank-number {
            background: #d97b3e;
        }
        .rank-list .rank-info {
            flex: 1;
        }
        .rank-list .rank-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--leyu-text);
            line-height: 1.4;
            margin-bottom: 2px;
        }
        .rank-list .rank-meta {
            font-size: 13px;
            color: var(--leyu-text-muted);
        }
        .rank-list .rank-tag {
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 14px;
            white-space: nowrap;
        }
        .rank-list .rank-tag.hot {
            background: #fde8d7;
            color: #c25e1a;
        }
        .rank-list .rank-tag.new {
            background: #e3f5eb;
            color: #1a7a4a;
        }

        /* ===== 专题推荐 ===== */
        .feature-card {
            position: relative;
            border-radius: var(--leyu-radius-lg);
            overflow: hidden;
            aspect-ratio: 16/7;
            display: flex;
            align-items: flex-end;
            box-shadow: var(--leyu-shadow);
            transition: var(--leyu-transition);
        }
        .feature-card:hover {
            box-shadow: var(--leyu-shadow-hover);
            transform: translateY(-4px);
        }
        .feature-card .feature-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            z-index: 0;
        }
        .feature-card .feature-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 20%, rgba(15, 35, 50, 0.75) 100%);
            z-index: 1;
        }
        .feature-card .feature-content {
            position: relative;
            z-index: 2;
            padding: 28px 30px;
            color: #fff;
        }
        .feature-card .feature-tag {
            display: inline-block;
            background: var(--leyu-accent);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 16px;
            margin-bottom: 10px;
        }
        .feature-card .feature-title {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            line-height: 1.45;
            margin-bottom: 6px;
        }
        .feature-card .feature-link {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            opacity: 0.85;
        }
        .feature-card .feature-link:hover {
            opacity: 1;
            color: #fff;
        }

        /* ===== 快速问答 ===== */
        .qa-mini {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .qa-mini .qa-item {
            background: var(--leyu-white);
            border-radius: var(--leyu-radius);
            border: 1px solid var(--leyu-border-light);
            box-shadow: var(--leyu-shadow-sm);
            padding: 18px 22px;
            transition: var(--leyu-transition);
        }
        .qa-mini .qa-item:hover {
            box-shadow: var(--leyu-shadow);
        }
        .qa-mini .qa-question {
            font-size: 16px;
            font-weight: 700;
            color: var(--leyu-text);
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .qa-mini .qa-question i {
            color: var(--leyu-accent);
            font-size: 16px;
        }
        .qa-mini .qa-answer {
            font-size: 15px;
            color: var(--leyu-text-muted);
            line-height: 1.7;
            padding-left: 24px;
        }

        /* ===== 转化表单 ===== */
        .cta-form-section {
            background: #EDF3F8;
            border-radius: var(--leyu-radius-lg);
            padding: 40px 36px;
            border: 1px solid var(--leyu-border-light);
            box-shadow: var(--leyu-shadow-sm);
        }
        .cta-form-section .cta-form-title {
            font-size: 22px;
            font-weight: 700;
            color: var(--leyu-text);
            margin-bottom: 8px;
        }
        .cta-form-section .cta-form-desc {
            font-size: 15px;
            color: var(--leyu-text-muted);
            margin-bottom: 20px;
        }
        .cta-form-section .form-control {
            border-radius: var(--leyu-radius-sm);
            border: 1px solid var(--leyu-border);
            padding: 12px 16px;
            font-size: 15px;
            transition: var(--leyu-transition);
            background: var(--leyu-white);
        }
        .cta-form-section .form-control:focus {
            border-color: var(--leyu-primary);
            box-shadow: 0 0 0 3px rgba(31, 94, 140, 0.12);
        }
        .cta-form-section .btn-submit {
            background: var(--leyu-primary);
            color: #fff;
            border: none;
            border-radius: var(--leyu-radius-sm);
            padding: 12px 28px;
            font-size: 16px;
            font-weight: 600;
            transition: var(--leyu-transition);
        }
        .cta-form-section .btn-submit:hover {
            background: var(--leyu-primary-dark);
            transform: scale(1.03);
            color: #fff;
        }
        .cta-form-section .trust-tip {
            font-size: 13px;
            color: var(--leyu-text-muted);
            margin-top: 10px;
        }
        .cta-form-section .trust-tip i {
            color: var(--leyu-accent-green);
            margin-right: 4px;
        }

        /* ===== 本月焦点 / 支撑板 ===== */
        .focus-card {
            background: var(--leyu-white);
            border-radius: var(--leyu-radius);
            border: 1px solid var(--leyu-border-light);
            box-shadow: var(--leyu-shadow-sm);
            padding: 26px 28px;
            transition: var(--leyu-transition);
            height: 100%;
        }
        .focus-card:hover {
            box-shadow: var(--leyu-shadow);
        }
        .focus-card .focus-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--leyu-primary-light);
            color: var(--leyu-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 14px;
        }
        .focus-card .focus-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--leyu-text);
            margin-bottom: 8px;
        }
        .focus-card .focus-desc {
            font-size: 14px;
            color: var(--leyu-text-muted);
            line-height: 1.7;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #203A4D;
            color: #d0dde6;
            padding: 48px 0 24px;
            margin-top: 0;
        }
        .site-footer .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .site-footer .footer-brand .footer-logo {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .site-footer .footer-brand .footer-logo i {
            color: var(--leyu-accent);
        }
        .site-footer .footer-desc {
            font-size: 14px;
            color: #a5b8c5;
            line-height: 1.7;
            max-width: 360px;
        }
        .site-footer .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }
        .site-footer .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 8px;
        }
        .site-footer .footer-col ul li a {
            font-size: 14px;
            color: #b8c9d4;
            transition: var(--leyu-transition);
        }
        .site-footer .footer-col ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .site-footer .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 22px;
            font-size: 13px;
            color: #a5b8c5;
        }
        .site-footer .footer-legal {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .site-footer .footer-bottom a {
            color: #b8c9d4;
            font-size: 13px;
        }
        .site-footer .footer-bottom a:hover {
            color: #fff;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991px) {
            .masthead-toggler {
                display: block;
            }
            .masthead-nav-wrap {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding-top: 14px;
                border-top: 1px solid var(--leyu-border-light);
                margin-top: 6px;
            }
            .masthead-nav-wrap.show {
                display: flex;
            }
            .masthead-divider {
                display: none;
            }
            .masthead-nav {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
                width: 100%;
            }
            .masthead-nav a {
                display: block;
                width: 100%;
                padding: 8px 4px;
                border-bottom: 1px solid var(--leyu-border-light);
            }
            .masthead-nav a::after {
                display: none;
            }
            .masthead-cta {
                margin-left: 0;
                width: 100%;
                padding-top: 6px;
            }
            .masthead-cta .btn-subscribe {
                width: 100%;
                text-align: center;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .article-list-item {
                flex-direction: column;
                padding: 14px;
                gap: 12px;
            }
            .article-list-item .article-thumb {
                width: 100%;
                min-width: 100%;
                aspect-ratio: 16/8;
            }
            .site-footer .footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .section-block {
                padding: 48px 0;
            }
            .feature-card {
                aspect-ratio: 16/9;
            }
            .cta-form-section {
                padding: 28px 22px;
            }
        }

        @media (max-width: 576px) {
            .masthead-brand {
                font-size: 22px;
            }
            .masthead-brand .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 16px;
                border-radius: 8px;
            }
            .category-hero {
                padding: 36px 0 44px;
            }
            .category-hero h1 {
                font-size: 24px;
            }
            .category-hero .lead-text {
                font-size: 15px;
            }
            .section-block {
                padding: 36px 0;
            }
            .section-block .section-title {
                font-size: 22px;
            }
            .leyu-card .card-body {
                padding: 16px 18px;
            }
            .article-list-item .article-title {
                font-size: 16px;
            }
            .feature-card .feature-title {
                font-size: 18px;
            }
            .feature-card .feature-content {
                padding: 18px 20px;
            }
            .cta-form-section {
                padding: 22px 16px;
            }
            .cta-form-section .cta-form-title {
                font-size: 19px;
            }
            .site-footer {
                padding: 32px 0 18px;
            }
            .site-footer .footer-legal {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
        }

/* roulang page: category4 */
:root {
            --leyu-primary: #1F5E8C;
            --leyu-primary-dark: #174A70;
            --leyu-primary-light: #EAF2F8;
            --leyu-accent: #F2994A;
            --leyu-accent-green: #6FCF97;
            --leyu-bg: #F5F9FC;
            --leyu-bg-soft: #EEF4F9;
            --leyu-white: #ffffff;
            --leyu-text: #1A2B3C;
            --leyu-text-muted: #5A6F80;
            --leyu-border: #DCE5EC;
            --leyu-border-light: #E8EEF4;
            --leyu-shadow-sm: 0 2px 8px rgba(31, 94, 140, 0.06);
            --leyu-shadow: 0 4px 16px rgba(31, 94, 140, 0.08);
            --leyu-shadow-hover: 0 8px 24px rgba(31, 94, 140, 0.15);
            --leyu-radius: 12px;
            --leyu-radius-sm: 8px;
            --leyu-radius-lg: 16px;
            --leyu-font: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --leyu-font-num: "Arial", "Helvetica Neue", sans-serif;
            --leyu-spacing-section: 88px;
            --leyu-spacing-card: 28px;
            --leyu-transition: all 0.28s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--leyu-font);
            font-size: 16px;
            line-height: 1.75;
            color: var(--leyu-text);
            background-color: var(--leyu-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

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

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--leyu-primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ========== 导航 ========== */
        .masthead {
            background: var(--leyu-white);
            border-bottom: 1px solid var(--leyu-border-light);
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 12px rgba(31, 94, 140, 0.04);
        }

        .masthead-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }

        .masthead-brand {
            font-size: 30px;
            font-weight: 700;
            color: var(--leyu-primary);
            letter-spacing: 1px;
            line-height: 1.2;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .masthead-brand .brand-icon {
            width: 40px;
            height: 40px;
            background: var(--leyu-primary);
            color: var(--leyu-white);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
        }

        .masthead-brand:hover {
            color: var(--leyu-primary-dark);
        }

        .masthead-toggler {
            display: none;
            background: none;
            border: 1px solid var(--leyu-border);
            border-radius: var(--leyu-radius-sm);
            width: 42px;
            height: 42px;
            font-size: 18px;
            color: var(--leyu-primary);
            cursor: pointer;
            transition: var(--leyu-transition);
            align-items: center;
            justify-content: center;
        }

        .masthead-toggler:hover {
            background: var(--leyu-primary-light);
            border-color: var(--leyu-primary);
        }

        .masthead-nav-wrap {
            display: flex;
            align-items: center;
            gap: 22px;
            flex-wrap: wrap;
        }

        .masthead-divider {
            width: 1px;
            height: 30px;
            background: var(--leyu-border);
            margin: 0 4px;
        }

        .masthead-nav {
            display: flex;
            align-items: center;
            gap: 18px;
            flex-wrap: wrap;
        }

        .masthead-nav a {
            font-size: 15px;
            font-weight: 500;
            color: var(--leyu-text);
            padding: 6px 2px;
            position: relative;
            white-space: nowrap;
            border-bottom: 2px solid transparent;
        }

        .masthead-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background: var(--leyu-primary);
            transition: var(--leyu-transition);
        }

        .masthead-nav a:hover::after,
        .masthead-nav a.active::after {
            width: 100%;
        }

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

        .masthead-nav a:hover {
            color: var(--leyu-primary-dark);
        }

        .masthead-cta {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .masthead-cta .btn-subscribe {
            background: var(--leyu-primary);
            color: var(--leyu-white);
            border: none;
            border-radius: var(--leyu-radius-sm);
            padding: 9px 18px;
            font-size: 14px;
            font-weight: 600;
            transition: var(--leyu-transition);
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .masthead-cta .btn-subscribe:hover {
            background: var(--leyu-primary-dark);
            color: var(--leyu-white);
            transform: scale(1.03);
        }

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

        .breadcrumb-bar .breadcrumb {
            margin: 0;
            padding: 0;
            list-style: none;
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--leyu-text-muted);
            background: none;
        }

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

        .breadcrumb-bar .breadcrumb li:not(:last-child)::after {
            content: '/';
            color: var(--leyu-border);
            font-size: 13px;
        }

        .breadcrumb-bar .breadcrumb a {
            color: var(--leyu-primary);
            font-weight: 500;
        }

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

        .breadcrumb-bar .breadcrumb .current {
            color: var(--leyu-text);
            font-weight: 600;
        }

        /* ========== 分类头部 ========== */
        .category-hero {
            background: linear-gradient(135deg, #EEF4F9 0%, #E3EEF6 45%, #F5F9FC 100%);
            padding: 64px 0 80px;
            position: relative;
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 550px;
            height: 550px;
            background: radial-gradient(circle, rgba(31, 94, 140, 0.07) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -25%;
            left: -5%;
            width: 450px;
            height: 450px;
            background: radial-gradient(circle, rgba(242, 153, 74, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-hero .hero-content {
            position: relative;
            z-index: 1;
        }

        .category-hero .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--leyu-white);
            color: var(--leyu-primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 20px;
            border: 1px solid var(--leyu-border);
            margin-bottom: 18px;
        }

        .category-hero h1 {
            font-size: 38px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--leyu-text);
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }

        .category-hero .hero-lead {
            font-size: 17px;
            color: var(--leyu-text-muted);
            max-width: 780px;
            margin-bottom: 12px;
            line-height: 1.8;
        }

        .category-hero .hero-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-top: 20px;
        }

        .category-hero .hero-meta span {
            font-size: 14px;
            color: var(--leyu-text-muted);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .category-hero .hero-meta i {
            color: var(--leyu-accent);
            font-size: 14px;
        }

        /* ========== 通用板块 ========== */
        .section-block {
            padding: 72px 0;
        }

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

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

        .section-heading {
            margin-bottom: 36px;
        }

        .section-heading .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--leyu-accent);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 10px;
        }

        .section-heading .eyebrow::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--leyu-accent);
            border-radius: 2px;
        }

        .section-heading h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--leyu-text);
            margin-bottom: 12px;
            line-height: 1.35;
        }

        .section-heading p {
            font-size: 16px;
            color: var(--leyu-text-muted);
            margin-bottom: 0;
            max-width: 680px;
            line-height: 1.8;
        }

        /* ========== 卡片样式 ========== */
        .content-card {
            background: var(--leyu-white);
            border-radius: var(--leyu-radius);
            box-shadow: var(--leyu-shadow);
            transition: var(--leyu-transition);
            overflow: hidden;
            height: 100%;
            border: 1px solid var(--leyu-border-light);
        }

        .content-card:hover {
            box-shadow: var(--leyu-shadow-hover);
            transform: translateY(-3px);
            border-color: rgba(31, 94, 140, 0.15);
        }

        .content-card .card-img {
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background: var(--leyu-bg-soft);
        }

        .content-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .content-card .card-body {
            padding: 24px 26px 26px;
        }

        .content-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--leyu-text-muted);
            margin-bottom: 12px;
            flex-wrap: wrap;
        }

        .content-card .card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .content-card .card-meta i {
            color: var(--leyu-primary);
            font-size: 12px;
        }

        .content-card .card-title {
            font-size: 19px;
            font-weight: 700;
            line-height: 1.45;
            margin-bottom: 12px;
        }

        .content-card .card-title a {
            color: var(--leyu-text);
        }

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

        .content-card .card-excerpt {
            font-size: 15px;
            color: var(--leyu-text-muted);
            line-height: 1.75;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

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

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

        /* ========== 排行样式 ========== */
        .rank-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .rank-list .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 18px;
            background: var(--leyu-white);
            border-radius: var(--leyu-radius-sm);
            margin-bottom: 10px;
            border: 1px solid var(--leyu-border-light);
            transition: var(--leyu-transition);
        }

        .rank-list .rank-item:hover {
            box-shadow: var(--leyu-shadow-sm);
            border-color: rgba(31, 94, 140, 0.15);
            transform: translateX(4px);
        }

        .rank-list .rank-number {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--leyu-bg-soft);
            color: var(--leyu-primary);
            font-weight: 700;
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-family: var(--leyu-font-num);
        }

        .rank-list .rank-item:nth-child(1) .rank-number {
            background: var(--leyu-accent);
            color: var(--leyu-white);
        }

        .rank-list .rank-item:nth-child(2) .rank-number {
            background: #D9A86C;
            color: var(--leyu-white);
        }

        .rank-list .rank-item:nth-child(3) .rank-number {
            background: #B87C5E;
            color: var(--leyu-white);
        }

        .rank-list .rank-content {
            flex: 1;
        }

        .rank-list .rank-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--leyu-text);
            margin-bottom: 2px;
            line-height: 1.5;
        }

        .rank-list .rank-meta {
            font-size: 13px;
            color: var(--leyu-text-muted);
        }

        .rank-list .rank-count {
            font-size: 14px;
            font-weight: 600;
            color: var(--leyu-primary);
            font-family: var(--leyu-font-num);
            white-space: nowrap;
        }

        /* ========== 专题样式 ========== */
        .feature-card {
            position: relative;
            border-radius: var(--leyu-radius-lg);
            overflow: hidden;
            box-shadow: var(--leyu-shadow);
            transition: var(--leyu-transition);
            height: 100%;
            min-height: 280px;
            display: flex;
            align-items: flex-end;
        }

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

        .feature-card .feature-img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: 0;
        }

        .feature-card .feature-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(180deg, transparent 30%, rgba(26, 43, 60, 0.75) 80%, rgba(26, 43, 60, 0.9) 100%);
            z-index: 1;
        }

        .feature-card .feature-content {
            position: relative;
            z-index: 2;
            padding: 28px;
            color: var(--leyu-white);
        }

        .feature-card .feature-tag {
            display: inline-block;
            background: var(--leyu-accent);
            color: var(--leyu-white);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 16px;
            margin-bottom: 12px;
        }

        .feature-card .feature-title {
            font-size: 22px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 8px;
            color: var(--leyu-white);
        }

        .feature-card .feature-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ========== 数据区样式 ========== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-item {
            text-align: center;
            padding: 30px 20px;
            background: var(--leyu-white);
            border-radius: var(--leyu-radius);
            box-shadow: var(--leyu-shadow-sm);
            border: 1px solid var(--leyu-border-light);
            transition: var(--leyu-transition);
        }

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

        .stat-item .stat-icon {
            width: 52px;
            height: 52px;
            margin: 0 auto 14px;
            background: var(--leyu-primary-light);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--leyu-primary);
        }

        .stat-item .stat-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--leyu-primary);
            font-family: var(--leyu-font-num);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .stat-item .stat-label {
            font-size: 14px;
            color: var(--leyu-text-muted);
            font-weight: 500;
        }

        /* ========== 表单样式 ========== */
        .cta-form-card {
            background: var(--leyu-bg-soft);
            border-radius: var(--leyu-radius-lg);
            padding: 40px 36px;
            border: 1px solid var(--leyu-border-light);
            position: relative;
            overflow: hidden;
        }

        .cta-form-card::before {
            content: '';
            position: absolute;
            top: -20%;
            right: -10%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(31, 94, 140, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-form-card .form-title {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--leyu-text);
        }

        .cta-form-card .form-desc {
            font-size: 15px;
            color: var(--leyu-text-muted);
            margin-bottom: 22px;
            line-height: 1.7;
        }

        .cta-form-card .form-control {
            background: var(--leyu-white);
            border: 1px solid var(--leyu-border);
            border-radius: var(--leyu-radius-sm);
            padding: 12px 16px;
            font-size: 15px;
            transition: var(--leyu-transition);
            color: var(--leyu-text);
        }

        .cta-form-card .form-control:focus {
            border-color: var(--leyu-primary);
            box-shadow: 0 0 0 3px rgba(31, 94, 140, 0.1);
        }

        .cta-form-card .btn-submit {
            background: var(--leyu-primary);
            border: none;
            border-radius: var(--leyu-radius-sm);
            padding: 12px 24px;
            font-size: 15px;
            font-weight: 600;
            color: var(--leyu-white);
            transition: var(--leyu-transition);
            white-space: nowrap;
        }

        .cta-form-card .btn-submit:hover {
            background: var(--leyu-primary-dark);
            transform: scale(1.02);
            box-shadow: 0 4px 12px rgba(31, 94, 140, 0.2);
        }

        .cta-form-card .form-trust {
            font-size: 13px;
            color: var(--leyu-text-muted);
            margin-top: 12px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .cta-form-card .form-trust i {
            color: var(--leyu-accent-green);
        }

        /* ========== FAQ样式 ========== */
        .faq-section .accordion-item {
            background: var(--leyu-white);
            border: 1px solid var(--leyu-border-light);
            border-radius: var(--leyu-radius-sm) !important;
            margin-bottom: 10px;
            overflow: hidden;
            box-shadow: var(--leyu-shadow-sm);
        }

        .faq-section .accordion-button {
            background: var(--leyu-bg-soft);
            color: var(--leyu-text);
            font-weight: 600;
            font-size: 16px;
            padding: 18px 22px;
            border: none;
            box-shadow: none;
            border-radius: var(--leyu-radius-sm) !important;
            transition: var(--leyu-transition);
        }

        .faq-section .accordion-button:not(.collapsed) {
            background: var(--leyu-primary-light);
            color: var(--leyu-primary);
            box-shadow: none;
        }

        .faq-section .accordion-button:focus {
            box-shadow: none;
            outline: none;
            border-color: var(--leyu-primary);
        }

        .faq-section .accordion-button::after {
            background-size: 16px;
            transition: var(--leyu-transition);
        }

        .faq-section .accordion-body {
            padding: 18px 22px;
            font-size: 15px;
            color: var(--leyu-text-muted);
            line-height: 1.8;
            background: var(--leyu-white);
        }

        /* ========== 标签样式 ========== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-cloud .tag-pill {
            display: inline-block;
            background: var(--leyu-white);
            border: 1px solid var(--leyu-border);
            color: var(--leyu-primary);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 18px;
            border-radius: 24px;
            transition: var(--leyu-transition);
        }

        .tag-cloud .tag-pill:hover {
            background: var(--leyu-primary);
            color: var(--leyu-white);
            border-color: var(--leyu-primary);
            box-shadow: var(--leyu-shadow-sm);
        }

        /* ========== 浏览其他分类样式 ========== */
        .channel-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .channel-card {
            background: var(--leyu-white);
            border: 1px solid var(--leyu-border-light);
            border-radius: var(--leyu-radius);
            padding: 22px 20px;
            text-align: center;
            transition: var(--leyu-transition);
            display: block;
        }

        .channel-card:hover {
            box-shadow: var(--leyu-shadow);
            transform: translateY(-3px);
            border-color: rgba(31, 94, 140, 0.15);
        }

        .channel-card .channel-icon {
            width: 46px;
            height: 46px;
            margin: 0 auto 12px;
            background: var(--leyu-primary-light);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--leyu-primary);
        }

        .channel-card .channel-name {
            font-size: 16px;
            font-weight: 600;
            color: var(--leyu-text);
            margin-bottom: 4px;
        }

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

        /* ========== 页脚 ========== */
        .site-footer {
            background: #203A4D;
            color: rgba(255, 255, 255, 0.85);
            padding: 60px 0 28px;
            margin-top: 0;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand .footer-logo {
            font-size: 22px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-brand .footer-logo i {
            color: var(--leyu-accent);
            font-size: 20px;
        }

        .footer-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.8;
            max-width: 360px;
            margin-bottom: 0;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

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

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

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            transition: var(--leyu-transition);
        }

        .footer-col ul li a:hover {
            color: var(--leyu-accent);
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 24px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
        }

        .footer-legal {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 13px;
            transition: var(--leyu-transition);
        }

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

        /* ========== 响应式 ========== */
        @media (max-width: 991.98px) {
            .masthead-toggler {
                display: flex;
            }

            .masthead-nav-wrap {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding-top: 14px;
            }

            .masthead-nav-wrap.open {
                display: flex;
            }

            .masthead-divider {
                display: none;
            }

            .masthead-nav {
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
                width: 100%;
            }

            .masthead-nav a {
                padding: 8px 4px;
                width: 100%;
                border-bottom: 1px solid var(--leyu-border-light);
            }

            .masthead-nav a::after {
                display: none;
            }

            .masthead-cta {
                width: 100%;
                padding-top: 8px;
            }

            .masthead-cta .btn-subscribe {
                width: 100%;
                justify-content: center;
            }

            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }

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

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

            .category-hero h1 {
                font-size: 30px;
            }
        }

        @media (max-width: 575.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .masthead-brand {
                font-size: 24px;
            }

            .masthead-brand .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 17px;
                border-radius: 8px;
            }

            .category-hero {
                padding: 44px 0 56px;
            }

            .category-hero h1 {
                font-size: 24px;
            }

            .category-hero .hero-lead {
                font-size: 15px;
            }

            .section-block {
                padding: 48px 0;
            }

            .section-heading h2 {
                font-size: 24px;
            }

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

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 16px;
            }

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

            .stat-item {
                padding: 20px 14px;
            }

            .stat-item .stat-number {
                font-size: 26px;
            }

            .channel-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }

            .cta-form-card {
                padding: 28px 22px;
            }

            .content-card .card-body {
                padding: 18px 18px 20px;
            }

            .content-card .card-title {
                font-size: 17px;
            }
        }

/* roulang page: category5 */
:root {
            --leyu-primary: #1F5E8C;
            --leyu-primary-dark: #174A70;
            --leyu-primary-light: #EAF2F8;
            --leyu-accent: #F2994A;
            --leyu-accent-green: #6FCF97;
            --leyu-bg: #F5F9FC;
            --leyu-bg-soft: #EEF4F9;
            --leyu-white: #ffffff;
            --leyu-text: #1A2B3C;
            --leyu-text-muted: #5A6F80;
            --leyu-border: #DCE5EC;
            --leyu-border-light: #E8EEF4;
            --leyu-shadow-sm: 0 2px 8px rgba(31, 94, 140, 0.06);
            --leyu-shadow: 0 4px 16px rgba(31, 94, 140, 0.08);
            --leyu-shadow-hover: 0 8px 24px rgba(31, 94, 140, 0.15);
            --leyu-radius: 12px;
            --leyu-radius-sm: 8px;
            --leyu-radius-lg: 16px;
            --leyu-font: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --leyu-font-num: "Arial", "Helvetica Neue", sans-serif;
            --leyu-spacing-section: 64px;
            --leyu-spacing-card: 24px;
            --leyu-transition: all 0.28s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--leyu-font);
            font-size: 16px;
            line-height: 1.75;
            color: var(--leyu-text);
            background-color: var(--leyu-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: var(--leyu-primary);
            text-decoration: none;
            transition: var(--leyu-transition);
        }
        a:hover {
            color: var(--leyu-primary-dark);
            text-decoration: none;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--leyu-primary);
            outline-offset: 3px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }
        /* ===== 杂志刊头导航 ===== */
        .masthead {
            background: var(--leyu-white);
            border-bottom: 1px solid var(--leyu-border);
            padding: 18px 0;
            position: relative;
            z-index: 100;
        }
        .masthead-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }
        .masthead-brand {
            font-size: 30px;
            font-weight: 700;
            color: var(--leyu-primary);
            letter-spacing: 1px;
            line-height: 1.2;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .masthead-brand .brand-icon {
            width: 40px;
            height: 40px;
            background: var(--leyu-primary);
            color: var(--leyu-white);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
        }
        .masthead-brand:hover {
            color: var(--leyu-primary-dark);
        }
        .masthead-toggler {
            display: none;
            background: none;
            border: 1px solid var(--leyu-border);
            border-radius: var(--leyu-radius-sm);
            padding: 8px 12px;
            font-size: 20px;
            color: var(--leyu-primary);
            cursor: pointer;
            transition: var(--leyu-transition);
        }
        .masthead-toggler:hover {
            background: var(--leyu-primary-light);
        }
        .masthead-nav-wrap {
            display: flex;
            align-items: center;
            gap: 18px;
            flex-wrap: wrap;
        }
        .masthead-divider {
            width: 1px;
            height: 32px;
            background: var(--leyu-border);
            margin: 0 2px;
        }
        .masthead-nav {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .masthead-nav a {
            font-size: 15px;
            font-weight: 500;
            color: var(--leyu-text);
            padding: 6px 2px;
            position: relative;
            white-space: nowrap;
            border-bottom: 2px solid transparent;
        }
        .masthead-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background: var(--leyu-primary);
            transition: var(--leyu-transition);
        }
        .masthead-nav a:hover::after,
        .masthead-nav a.active::after {
            width: 100%;
        }
        .masthead-nav a.active {
            color: var(--leyu-primary);
            font-weight: 600;
        }
        .masthead-nav a:hover {
            color: var(--leyu-primary-dark);
        }
        .masthead-cta .btn-subscribe {
            background: var(--leyu-primary);
            color: var(--leyu-white);
            border: none;
            border-radius: var(--leyu-radius-sm);
            padding: 9px 18px;
            font-size: 14px;
            font-weight: 600;
            transition: var(--leyu-transition);
            white-space: nowrap;
            display: inline-block;
        }
        .masthead-cta .btn-subscribe:hover {
            background: var(--leyu-primary-dark);
            color: var(--leyu-white);
            transform: scale(1.03);
        }
        @media (max-width: 991px) {
            .masthead-toggler {
                display: block;
            }
            .masthead-nav-wrap {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                gap: 14px;
                padding-top: 16px;
                border-top: 1px solid var(--leyu-border);
                margin-top: 12px;
            }
            .masthead-nav-wrap.show {
                display: flex;
            }
            .masthead-divider {
                display: none;
            }
            .masthead-nav {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
                width: 100%;
            }
            .masthead-nav a {
                display: block;
                width: 100%;
                padding: 8px 0;
            }
            .masthead-cta {
                width: 100%;
            }
            .masthead-cta .btn-subscribe {
                display: block;
                text-align: center;
                width: 100%;
            }
            .masthead-brand {
                font-size: 24px;
            }
            .masthead-brand .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 16px;
            }
        }
        @media (max-width: 576px) {
            .masthead {
                padding: 12px 0;
            }
            .masthead-brand {
                font-size: 20px;
                gap: 6px;
            }
            .masthead-brand .brand-icon {
                width: 28px;
                height: 28px;
                font-size: 13px;
                border-radius: 8px;
            }
            .masthead-toggler {
                padding: 6px 10px;
                font-size: 16px;
            }
        }
        /* ===== 分类 Hero ===== */
        .category-hero {
            background: linear-gradient(135deg, #EEF4F9 0%, #E3EEF6 45%, #F5F9FC 100%);
            padding: 64px 0 72px;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--leyu-border-light);
        }
        .category-hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -8%;
            width: 480px;
            height: 480px;
            background: radial-gradient(circle, rgba(31, 94, 140, 0.07) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -25%;
            left: -5%;
            width: 380px;
            height: 380px;
            background: radial-gradient(circle, rgba(242, 153, 74, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-hero .hero-bg-image {
            position: absolute;
            right: -80px;
            bottom: -60px;
            width: 420px;
            height: 320px;
            object-fit: cover;
            border-radius: var(--leyu-radius-lg);
            box-shadow: var(--leyu-shadow);
            opacity: 0.9;
            z-index: 0;
        }
        .category-hero .container {
            position: relative;
            z-index: 1;
        }
        .category-breadcrumb {
            font-size: 14px;
            color: var(--leyu-text-muted);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .category-breadcrumb a {
            color: var(--leyu-text-muted);
        }
        .category-breadcrumb a:hover {
            color: var(--leyu-primary);
        }
        .category-breadcrumb .sep {
            opacity: 0.5;
        }
        .category-hero h1 {
            font-size: 36px;
            font-weight: 700;
            color: var(--leyu-text);
            margin-bottom: 16px;
            line-height: 1.35;
            letter-spacing: 0.5px;
        }
        .category-hero .hero-desc {
            font-size: 17px;
            color: var(--leyu-text-muted);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 0;
        }
        @media (max-width: 992px) {
            .category-hero .hero-bg-image {
                width: 280px;
                height: 220px;
                right: -40px;
                bottom: -30px;
                opacity: 0.5;
            }
        }
        @media (max-width: 768px) {
            .category-hero {
                padding: 40px 0 48px;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .category-hero .hero-desc {
                font-size: 15px;
            }
            .category-hero .hero-bg-image {
                display: none;
            }
        }
        @media (max-width: 576px) {
            .category-hero h1 {
                font-size: 24px;
            }
            .category-breadcrumb {
                font-size: 12px;
            }
        }
        /* ===== 通用板块 ===== */
        .section-block {
            padding: var(--leyu-spacing-section) 0;
        }
        .section-block.alt-bg {
            background: var(--leyu-bg-soft);
            border-top: 1px solid var(--leyu-border-light);
            border-bottom: 1px solid var(--leyu-border-light);
        }
        .section-header {
            margin-bottom: 36px;
        }
        .section-header h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--leyu-text);
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }
        .section-header .section-sub {
            font-size: 16px;
            color: var(--leyu-text-muted);
            max-width: 600px;
        }
        /* ===== 文章卡片列表 ===== */
        .article-card {
            background: var(--leyu-white);
            border-radius: var(--leyu-radius);
            box-shadow: var(--leyu-shadow);
            overflow: hidden;
            transition: var(--leyu-transition);
            height: 100%;
            display: flex;
            flex-direction: column;
            border: 1px solid var(--leyu-border-light);
        }
        .article-card:hover {
            box-shadow: var(--leyu-shadow-hover);
            transform: translateY(-3px);
        }
        .article-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/9;
            background: var(--leyu-bg-soft);
        }
        .article-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--leyu-transition);
        }
        .article-card:hover .card-img-wrap img {
            transform: scale(1.05);
        }
        .article-card .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(31, 94, 140, 0.9);
            color: var(--leyu-white);
            font-size: 12px;
            font-weight: 500;
            padding: 4px 10px;
            border-radius: 20px;
            letter-spacing: 0.5px;
        }
        .article-card .card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .article-card .card-date {
            font-size: 13px;
            color: var(--leyu-text-muted);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-card .card-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--leyu-text);
            margin-bottom: 10px;
            line-height: 1.5;
            transition: var(--leyu-transition);
        }
        .article-card .card-title a {
            color: var(--leyu-text);
        }
        .article-card .card-title a:hover {
            color: var(--leyu-primary);
        }
        .article-card .card-excerpt {
            font-size: 14px;
            color: var(--leyu-text-muted);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 14px;
        }
        .article-card .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--leyu-primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-card .card-link:hover {
            color: var(--leyu-primary-dark);
        }
        .article-card .card-link i {
            font-size: 12px;
            transition: var(--leyu-transition);
        }
        .article-card .card-link:hover i {
            transform: translateX(4px);
        }
        /* ===== 热门排行 ===== */
        .rank-list {
            background: var(--leyu-white);
            border-radius: var(--leyu-radius);
            box-shadow: var(--leyu-shadow);
            border: 1px solid var(--leyu-border-light);
            overflow: hidden;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 20px;
            border-bottom: 1px solid var(--leyu-border-light);
            transition: var(--leyu-transition);
        }
        .rank-item:last-child {
            border-bottom: none;
        }
        .rank-item:hover {
            background: var(--leyu-primary-light);
        }
        .rank-num {
            font-family: var(--leyu-font-num);
            font-size: 28px;
            font-weight: 700;
            color: var(--leyu-accent);
            min-width: 44px;
            text-align: center;
            line-height: 1;
        }
        .rank-item:nth-child(1) .rank-num {
            color: #E67E22;
        }
        .rank-item:nth-child(2) .rank-num {
            color: #7F8C8D;
        }
        .rank-item:nth-child(3) .rank-num {
            color: #A97142;
        }
        .rank-info {
            flex: 1;
        }
        .rank-info .rank-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--leyu-text);
            margin-bottom: 4px;
            line-height: 1.5;
        }
        .rank-info .rank-title a {
            color: var(--leyu-text);
        }
        .rank-info .rank-title a:hover {
            color: var(--leyu-primary);
        }
        .rank-info .rank-meta {
            font-size: 13px;
            color: var(--leyu-text-muted);
            display: flex;
            gap: 14px;
            align-items: center;
        }
        /* ===== 专题推荐 ===== */
        .feature-card {
            background: var(--leyu-white);
            border-radius: var(--leyu-radius-lg);
            overflow: hidden;
            box-shadow: var(--leyu-shadow);
            transition: var(--leyu-transition);
            height: 100%;
            border: 1px solid var(--leyu-border-light);
            display: flex;
            flex-direction: column;
        }
        .feature-card:hover {
            box-shadow: var(--leyu-shadow-hover);
            transform: translateY(-3px);
        }
        .feature-card .feature-img {
            aspect-ratio: 16/9;
            overflow: hidden;
            position: relative;
        }
        .feature-card .feature-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--leyu-transition);
        }
        .feature-card:hover .feature-img img {
            transform: scale(1.05);
        }
        .feature-card .feature-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--leyu-accent);
            color: var(--leyu-white);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            letter-spacing: 0.5px;
        }
        .feature-card .feature-body {
            padding: 24px 26px 26px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .feature-card .feature-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--leyu-text);
            margin-bottom: 10px;
            line-height: 1.45;
        }
        .feature-card .feature-desc {
            font-size: 15px;
            color: var(--leyu-text-muted);
            flex: 1;
            margin-bottom: 14px;
            line-height: 1.75;
        }
        /* ===== 编辑观察 ===== */
        .insight-item {
            background: var(--leyu-white);
            border-radius: var(--leyu-radius);
            padding: 26px 28px;
            box-shadow: var(--leyu-shadow);
            border: 1px solid var(--leyu-border-light);
            height: 100%;
            transition: var(--leyu-transition);
        }
        .insight-item:hover {
            box-shadow: var(--leyu-shadow-hover);
        }
        .insight-item .insight-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background: var(--leyu-primary-light);
            color: var(--leyu-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 16px;
        }
        .insight-item h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--leyu-text);
            margin-bottom: 10px;
        }
        .insight-item p {
            font-size: 14px;
            color: var(--leyu-text-muted);
            line-height: 1.75;
            margin-bottom: 0;
        }
        /* ===== 数据标签 ===== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag-cloud .tag-item {
            background: var(--leyu-white);
            border: 1px solid var(--leyu-border);
            color: var(--leyu-text-muted);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 500;
            transition: var(--leyu-transition);
            cursor: default;
        }
        .tag-cloud .tag-item:hover {
            background: var(--leyu-primary-light);
            color: var(--leyu-primary);
            border-color: var(--leyu-primary);
        }
        /* ===== 分类入口 ===== */
        .category-entry-card {
            background: var(--leyu-white);
            border-radius: var(--leyu-radius);
            padding: 22px 24px;
            box-shadow: var(--leyu-shadow);
            border: 1px solid var(--leyu-border-light);
            height: 100%;
            text-align: center;
            transition: var(--leyu-transition);
            display: block;
        }
        .category-entry-card:hover {
            box-shadow: var(--leyu-shadow-hover);
            transform: translateY(-4px);
        }
        .category-entry-card .entry-icon {
            width: 46px;
            height: 46px;
            margin: 0 auto 12px;
            background: var(--leyu-primary-light);
            color: var(--leyu-primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
        }
        .category-entry-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--leyu-text);
            margin-bottom: 6px;
        }
        .category-entry-card p {
            font-size: 13px;
            color: var(--leyu-text-muted);
            margin-bottom: 0;
            line-height: 1.6;
        }
        /* ===== FAQ ===== */
        .faq-accordion .accordion-item {
            background: var(--leyu-white);
            border: 1px solid var(--leyu-border-light);
            border-radius: var(--leyu-radius-sm) !important;
            margin-bottom: 10px;
            box-shadow: var(--leyu-shadow-sm);
            overflow: hidden;
        }
        .faq-accordion .accordion-button {
            background: var(--leyu-bg-soft);
            color: var(--leyu-text);
            font-size: 16px;
            font-weight: 600;
            padding: 18px 22px;
            border: none;
            box-shadow: none;
            border-radius: var(--leyu-radius-sm) !important;
            transition: var(--leyu-transition);
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            background: var(--leyu-primary-light);
            color: var(--leyu-primary);
            box-shadow: none;
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            outline: 2px solid var(--leyu-primary);
            outline-offset: -2px;
        }
        .faq-accordion .accordion-button::after {
            filter: brightness(0) saturate(100%) invert(30%) sepia(65%) saturate(1400%) hue-rotate(190deg);
        }
        .faq-accordion .accordion-body {
            background: var(--leyu-white);
            color: var(--leyu-text-muted);
            font-size: 15px;
            line-height: 1.8;
            padding: 18px 22px;
        }
        /* ===== 转化表单 ===== */
        .cta-card {
            background: var(--leyu-primary);
            border-radius: var(--leyu-radius-lg);
            padding: 44px 48px;
            position: relative;
            overflow: hidden;
            box-shadow: 0 12px 32px rgba(31, 94, 140, 0.25);
        }
        .cta-card::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-card h2 {
            color: var(--leyu-white);
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 10px;
            position: relative;
            z-index: 1;
        }
        .cta-card p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 15px;
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
        }
        .cta-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }
        .cta-form .form-control {
            background: var(--leyu-white);
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: var(--leyu-radius-sm);
            padding: 12px 16px;
            font-size: 15px;
            color: var(--leyu-text);
            min-width: 200px;
            flex: 1;
            transition: var(--leyu-transition);
        }
        .cta-form .form-control::placeholder {
            color: #9AA8B5;
        }
        .cta-form .form-control:focus {
            border-color: var(--leyu-accent);
            box-shadow: 0 0 0 3px rgba(242, 153, 74, 0.3);
            outline: none;
        }
        .cta-form .btn-cta {
            background: var(--leyu-accent);
            color: var(--leyu-white);
            border: none;
            border-radius: var(--leyu-radius-sm);
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 700;
            transition: var(--leyu-transition);
            white-space: nowrap;
        }
        .cta-form .btn-cta:hover {
            background: #E08A3A;
            color: var(--leyu-white);
            transform: scale(1.03);
        }
        .cta-trust {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 14px;
            position: relative;
            z-index: 1;
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .cta-trust i {
            margin-right: 4px;
        }
        @media (max-width: 768px) {
            .cta-card {
                padding: 28px 24px;
            }
            .cta-card h2 {
                font-size: 21px;
            }
            .cta-form {
                flex-direction: column;
            }
            .cta-form .form-control {
                min-width: auto;
                width: 100%;
            }
            .cta-form .btn-cta {
                width: 100%;
            }
        }
        /* ===== 页脚 ===== */
        .site-footer {
            background: #203A4D;
            color: rgba(255, 255, 255, 0.8);
            padding: 52px 0 24px;
            font-size: 14px;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }
        .footer-brand .footer-logo {
            font-size: 24px;
            font-weight: 700;
            color: var(--leyu-white);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-brand .footer-desc {
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.7;
            font-size: 14px;
            max-width: 320px;
        }
        .footer-col h4 {
            color: var(--leyu-white);
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            transition: var(--leyu-transition);
        }
        .footer-col ul li a:hover {
            color: var(--leyu-accent);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
        }
        .footer-legal {
            display: flex;
            gap: 18px;
            flex-wrap: wrap;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 13px;
            transition: var(--leyu-transition);
        }
        .footer-bottom a:hover {
            color: var(--leyu-accent);
        }
        @media (max-width: 992px) {
            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 576px) {
            .footer-top {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .footer-legal {
                flex-direction: column;
                gap: 6px;
            }
            .site-footer {
                padding: 36px 0 18px;
            }
        }
        /* ===== 列表区查看更多按钮 ===== */
        .btn-view-more {
            background: transparent;
            border: 1px solid var(--leyu-primary);
            color: var(--leyu-primary);
            border-radius: 6px;
            padding: 10px 24px;
            font-size: 14px;
            font-weight: 600;
            transition: var(--leyu-transition);
            display: inline-block;
        }
        .btn-view-more:hover {
            background: var(--leyu-primary);
            color: var(--leyu-white);
        }
        /* ===== 响应式微调 ===== */
        @media (max-width: 768px) {
            :root {
                --leyu-spacing-section: 44px;
                --leyu-spacing-card: 18px;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .article-card .card-title {
                font-size: 15px;
            }
            .rank-num {
                font-size: 22px;
                min-width: 32px;
            }
            .rank-item {
                padding: 12px 14px;
                gap: 10px;
            }
            .feature-card .feature-title {
                font-size: 17px;
            }
        }
        @media (max-width: 576px) {
            :root {
                --leyu-spacing-section: 32px;
            }
            .section-header h2 {
                font-size: 19px;
            }
            .article-card .card-body {
                padding: 14px 16px 16px;
            }
            .rank-info .rank-title {
                font-size: 13px;
            }
            .rank-info .rank-meta {
                font-size: 11px;
                gap: 8px;
            }
            .feature-card .feature-body {
                padding: 16px 18px 18px;
            }
            .insight-item {
                padding: 18px 20px;
            }
            .tag-cloud .tag-item {
                font-size: 12px;
                padding: 4px 12px;
            }
        }

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