/* roulang page: index */
/* ===== :root 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --bg-light: #f8f9fa;
            --bg-dark: #0d1b2a;
            --bg-section: #ffffff;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-light: #8a8aaa;
            --text-white: #ffffff;
            --border-color: #e8e8f0;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.10);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.15);
            --shadow-hover: 0 16px 48px rgba(0,0,0,0.12);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --nav-height: 72px;
            --max-width: 1200px;
            --section-spacing: 100px;
        }

        /* ===== 基础 Reset ===== */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font-sans);
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover, a:focus {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, textarea, select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }
        ul, ol {
            list-style: none;
        }
        h1, h2, h3, h4, h5, h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-primary);
        }
        p {
            margin-bottom: 1rem;
            color: var(--text-secondary);
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-wide {
            max-width: 1360px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航 - 悬浮胶囊风格 ===== */
        .site-header {
            position: fixed;
            top: 20px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            width: calc(100% - 48px);
            max-width: 1100px;
            background: rgba(255,255,255,0.85);
            backdrop-filter: blur(20px) saturate(180%);
            -webkit-backdrop-filter: blur(20px) saturate(180%);
            border-radius: 60px;
            box-shadow: 0 4px 30px rgba(0,0,0,0.08);
            border: 1px solid rgba(255,255,255,0.5);
            padding: 0 28px;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            transition: var(--transition);
        }
        .site-header.scrolled {
            top: 12px;
            background: rgba(255,255,255,0.96);
            box-shadow: 0 8px 40px rgba(0,0,0,0.12);
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
        }
        .site-logo i {
            font-size: 1.6rem;
            color: var(--primary);
        }
        .site-logo span {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links a {
            padding: 8px 20px;
            border-radius: 40px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }
        .nav-links a:hover {
            color: var(--primary);
            background: rgba(230,57,70,0.08);
        }
        .nav-links a.active {
            color: var(--text-white);
            background: var(--primary);
            box-shadow: 0 4px 12px rgba(230,57,70,0.35);
        }
        .nav-links a.active:hover {
            color: var(--text-white);
            background: var(--primary-dark);
        }
        .nav-cta {
            padding: 8px 24px !important;
            background: var(--primary) !important;
            color: var(--text-white) !important;
            border-radius: 40px !important;
            font-weight: 600 !important;
            box-shadow: 0 4px 16px rgba(230,57,70,0.30);
        }
        .nav-cta:hover {
            background: var(--primary-dark) !important;
            box-shadow: 0 6px 24px rgba(230,57,70,0.40) !important;
            transform: translateY(-1px);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--text-primary);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(0,0,0,0.05);
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center center;
            background-attachment: fixed;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13,27,42,0.82) 0%, rgba(13,27,42,0.45) 100%);
            z-index: 1;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 200px;
            background: linear-gradient(to top, var(--bg-light) 0%, transparent 100%);
            z-index: 2;
        }
        .hero-content {
            position: relative;
            z-index: 3;
            text-align: center;
            max-width: 820px;
            padding: 0 24px;
            margin-top: -40px;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(230,57,70,0.20);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(230,57,70,0.30);
            padding: 8px 24px;
            border-radius: 60px;
            color: var(--primary-light);
            font-size: 0.88rem;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 28px;
            text-transform: uppercase;
        }
        .hero-title {
            font-size: clamp(2.6rem, 7vw, 4.8rem);
            font-weight: 900;
            color: var(--text-white);
            line-height: 1.1;
            margin-bottom: 24px;
            letter-spacing: -1px;
        }
        .hero-title span {
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc {
            font-size: 1.2rem;
            color: rgba(255,255,255,0.80);
            max-width: 640px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .btn-primary, .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 36px;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--primary);
            color: var(--text-white);
            box-shadow: 0 8px 30px rgba(230,57,70,0.35);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 12px 40px rgba(230,57,70,0.45);
            transform: translateY(-2px);
            color: var(--text-white);
        }
        .btn-secondary {
            background: rgba(255,255,255,0.12);
            backdrop-filter: blur(8px);
            color: var(--text-white);
            border: 1px solid rgba(255,255,255,0.25);
        }
        .btn-secondary:hover {
            background: rgba(255,255,255,0.22);
            transform: translateY(-2px);
            color: var(--text-white);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            justify-content: center;
            margin-top: 60px;
            padding-top: 40px;
            border-top: 1px solid rgba(255,255,255,0.12);
        }
        .hero-stat-item {
            text-align: center;
        }
        .hero-stat-number {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--text-white);
            line-height: 1.2;
        }
        .hero-stat-number span {
            color: var(--primary-light);
        }
        .hero-stat-label {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.60);
            margin-top: 4px;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: var(--section-spacing) 0;
            position: relative;
        }
        .section-alt {
            background: var(--bg-section);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-title {
            font-size: clamp(1.8rem, 3.5vw, 2.8rem);
            font-weight: 800;
            text-align: center;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            text-align: center;
            max-width: 600px;
            margin: 0 auto 50px;
            line-height: 1.7;
        }
        .section-dark .section-title {
            color: var(--text-white);
        }
        .section-dark .section-subtitle {
            color: rgba(255,255,255,0.65);
        }

        /* ===== 核心介绍板块 ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .intro-image img {
            width: 100%;
            height: 420px;
            object-fit: cover;
            transition: var(--transition);
        }
        .intro-image:hover img {
            transform: scale(1.03);
        }
        .intro-content h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 20px;
        }
        .intro-content p {
            font-size: 1.05rem;
            margin-bottom: 20px;
        }
        .intro-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 24px;
        }
        .tag {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 500;
            background: rgba(230,57,70,0.08);
            color: var(--primary);
            border: 1px solid rgba(230,57,70,0.15);
            transition: var(--transition);
        }
        .tag:hover {
            background: var(--primary);
            color: var(--text-white);
            border-color: var(--primary);
        }

        /* ===== 分类入口板块 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 28px;
        }
        .category-card {
            background: var(--bg-section);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            cursor: pointer;
            position: relative;
        }
        .category-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-6px);
        }
        .category-card-image {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .category-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .category-card:hover .category-card-image img {
            transform: scale(1.06);
        }
        .category-card-image::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60%;
            background: linear-gradient(to top, rgba(0,0,0,0.5), transparent);
        }
        .category-card-body {
            padding: 22px 24px 26px;
        }
        .category-card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .category-card-body p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }
        .category-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            color: var(--primary);
            font-size: 0.92rem;
        }
        .category-card-link i {
            transition: var(--transition);
        }
        .category-card:hover .category-card-link i {
            transform: translateX(4px);
        }

        /* ===== 最新资讯列表 ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 28px;
        }
        .news-card {
            background: var(--bg-section);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .news-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .news-card-image {
            height: 210px;
            overflow: hidden;
            position: relative;
        }
        .news-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .news-card:hover .news-card-image img {
            transform: scale(1.05);
        }
        .news-card-category {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--primary);
            color: var(--text-white);
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 0.78rem;
            font-weight: 600;
            z-index: 2;
        }
        .news-card-body {
            padding: 22px 24px 26px;
        }
        .news-card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .news-card-body h3 a {
            color: var(--text-primary);
        }
        .news-card-body h3 a:hover {
            color: var(--primary);
        }
        .news-card-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.82rem;
            color: var(--text-light);
        }
        .news-card-meta i {
            margin-right: 4px;
        }

        /* ===== 数据统计板块 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }
        .stat-card {
            padding: 40px 20px;
            border-radius: var(--radius-md);
            background: rgba(255,255,255,0.06);
            border: 1px solid rgba(255,255,255,0.10);
            transition: var(--transition);
        }
        .stat-card:hover {
            background: rgba(255,255,255,0.10);
            transform: translateY(-4px);
            border-color: rgba(230,57,70,0.30);
        }
        .stat-card i {
            font-size: 2.4rem;
            color: var(--primary-light);
            margin-bottom: 16px;
        }
        .stat-card .number {
            font-size: 2.6rem;
            font-weight: 900;
            color: var(--text-white);
            line-height: 1.2;
        }
        .stat-card .label {
            font-size: 0.95rem;
            color: rgba(255,255,255,0.65);
            margin-top: 6px;
        }

        /* ===== 服务流程板块 ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            counter-reset: step;
        }
        .process-card {
            background: var(--bg-section);
            border-radius: var(--radius-md);
            padding: 36px 28px 40px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            position: relative;
            transition: var(--transition);
            text-align: center;
        }
        .process-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .process-card::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: -18px;
            left: 50%;
            transform: translateX(-50%);
            width: 44px;
            height: 44px;
            background: var(--primary);
            color: var(--text-white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 800;
            box-shadow: 0 4px 16px rgba(230,57,70,0.30);
        }
        .process-card i {
            font-size: 2.4rem;
            color: var(--primary);
            margin-bottom: 18px;
            margin-top: 8px;
        }
        .process-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .process-card p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* ===== FAQ 板块 ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item {
            background: var(--bg-section);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            padding: 20px 28px;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
            gap: 16px;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            font-size: 1.1rem;
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-question.open i {
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 28px 20px;
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-answer.open {
            display: block;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* ===== CTA 板块 ===== */
        .cta-section {
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            position: relative;
            padding: 100px 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13,27,42,0.85) 0%, rgba(13,27,42,0.65) 100%);
        }
        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: clamp(1.8rem, 3vw, 2.6rem);
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .cta-content p {
            color: rgba(255,255,255,0.75);
            font-size: 1.1rem;
            margin-bottom: 32px;
        }
        .cta-content .btn-primary {
            font-size: 1.05rem;
            padding: 18px 44px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            padding: 60px 0 30px;
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .site-logo {
            font-size: 1.4rem;
            margin-bottom: 16px;
        }
        .footer-brand p {
            color: rgba(255,255,255,0.55);
            font-size: 0.92rem;
            max-width: 320px;
            line-height: 1.7;
        }
        .footer-col h4 {
            color: var(--text-white);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
        }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.55);
            font-size: 0.9rem;
            padding: 6px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }
        .footer-bottom p {
            color: rgba(255,255,255,0.40);
            font-size: 0.85rem;
            margin: 0;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            color: rgba(255,255,255,0.55);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: var(--text-white);
            transform: translateY(-2px);
        }

        /* ===== 空状态 ===== */
        .empty-state {
            text-align: center;
            padding: 40px 20px;
            color: var(--text-light);
            font-size: 1rem;
            background: rgba(0,0,0,0.02);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-color);
        }

        /* ===== 响应式设计 ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-grid {
                grid-template-columns: 1fr;
                max-width: 500px;
                margin: 0 auto;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-spacing: 60px;
            }
            .site-header {
                top: 12px;
                width: calc(100% - 24px);
                padding: 0 18px;
                height: 56px;
                border-radius: 40px;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: calc(100% + 12px);
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(20px);
                border-radius: 24px;
                padding: 16px;
                flex-direction: column;
                gap: 4px;
                box-shadow: 0 20px 60px rgba(0,0,0,0.20);
                border: 1px solid var(--border-color);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 12px 20px;
                width: 100%;
                border-radius: 12px;
            }
            .nav-links a.active {
                background: var(--primary);
                color: var(--text-white);
            }
            .nav-cta {
                text-align: center;
            }
            .nav-toggle {
                display: block;
            }
            .hero {
                background-attachment: scroll;
                min-height: 90vh;
            }
            .hero-title {
                font-size: clamp(2rem, 8vw, 3.2rem);
            }
            .hero-stats {
                gap: 24px;
            }
            .hero-stat-number {
                font-size: 1.6rem;
            }
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .intro-image img {
                height: 280px;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-card {
                padding: 28px 16px;
            }
            .stat-card .number {
                font-size: 2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .faq-question {
                padding: 16px 20px;
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 0 20px 16px;
            }
            .cta-section {
                padding: 60px 0;
                background-attachment: scroll;
            }
        }

        @media (max-width: 520px) {
            .hero-stats {
                flex-direction: column;
                gap: 16px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .btn-primary, .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .container {
                padding: 0 16px;
            }
            .hero-badge {
                font-size: 0.75rem;
                padding: 6px 16px;
            }
        }

        /* ===== 辅助类 ===== */
        .text-center { text-align: center; }
        .mt-20 { margin-top: 20px; }
        .mb-20 { margin-bottom: 20px; }
        .gap-16 { gap: 16px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #b71c1c;
            --primary-light: #ff6b6b;
            --primary-bg: rgba(230, 57, 70, 0.08);
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --bg-dark: #0a1628;
            --bg-darker: #060e1c;
            --bg-card: #ffffff;
            --bg-light: #f8f9fa;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-muted: #7a7a9a;
            --text-inverse: #ffffff;
            --border-color: rgba(29, 53, 87, 0.12);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 8px 28px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.14);
            --transition: 0.28s cubic-bezier(0.22, 0.61, 0.36, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text-primary);
            background: var(--bg-light);
            padding-top: var(--header-height);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--primary);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            color: var(--text-primary);
            font-weight: 700;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 640px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ===== 导航（悬浮胶囊风格） ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(10, 22, 40, 0.88);
            backdrop-filter: blur(16px) saturate(180%);
            -webkit-backdrop-filter: blur(16px) saturate(180%);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--container-max);
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-inverse);
            letter-spacing: -0.3px;
        }
        .site-logo i {
            color: var(--primary-light);
            font-size: 26px;
        }
        .site-logo span {
            background: linear-gradient(135deg, #ffffff 60%, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .site-logo:hover {
            opacity: 0.9;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.75);
            transition: var(--transition);
            letter-spacing: 0.2px;
        }
        .nav-links a:hover,
        .nav-links a:focus-visible {
            color: #fff;
            background: rgba(255, 255, 255, 0.10);
        }
        .nav-links a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.35);
        }
        .nav-links a.nav-cta {
            background: var(--primary);
            color: #fff;
            padding: 8px 22px;
            border-radius: 50px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 6px;
            box-shadow: 0 4px 20px rgba(230, 57, 70, 0.30);
        }
        .nav-links a.nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 8px 28px rgba(230, 57, 70, 0.40);
        }
        .nav-toggle {
            display: none;
            color: #fff;
            font-size: 24px;
            padding: 8px;
            border-radius: var(--radius-sm);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-links {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(10, 22, 40, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px 28px;
                gap: 8px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
                box-shadow: var(--shadow-lg);
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links a {
                width: 100%;
                text-align: center;
                padding: 12px 18px;
                font-size: 16px;
            }
            .nav-links a.nav-cta {
                justify-content: center;
                margin-top: 4px;
            }
        }

        /* ===== Banner 内页横幅 ===== */
        .page-banner {
            position: relative;
            padding: 80px 0 60px;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center 30%;
            background-blend-mode: overlay;
            min-height: 320px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 22, 40, 0.92) 40%, rgba(230, 57, 70, 0.30) 100%);
            z-index: 1;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-banner h1 {
            font-size: 48px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.30);
        }
        .page-banner p {
            font-size: 20px;
            color: rgba(255, 255, 255, 0.80);
            max-width: 640px;
            margin: 0 auto 20px;
            line-height: 1.5;
        }
        .page-banner .banner-tags {
            display: flex;
            justify-content: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .page-banner .tag {
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.18);
            color: #fff;
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 500;
            backdrop-filter: blur(4px);
        }

        @media (max-width: 768px) {
            .page-banner {
                padding: 60px 0 40px;
                min-height: 240px;
            }
            .page-banner h1 {
                font-size: 32px;
            }
            .page-banner p {
                font-size: 16px;
            }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 72px 0;
        }
        .section-title {
            font-size: 34px;
            font-weight: 800;
            text-align: center;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            text-align: center;
            color: var(--text-secondary);
            font-size: 17px;
            max-width: 580px;
            margin: 0 auto 48px;
            line-height: 1.6;
        }
        .section-divider {
            width: 56px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 0 auto 36px;
        }

        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 26px;
            }
            .section-subtitle {
                font-size: 15px;
                margin-bottom: 32px;
            }
        }

        /* ===== 赛事分类卡片 ===== */
        .sport-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .sport-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 20px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            cursor: default;
        }
        .sport-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary);
        }
        .sport-card .icon-wrap {
            width: 64px;
            height: 64px;
            margin: 0 auto 16px;
            background: var(--primary-bg);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            color: var(--primary);
            transition: var(--transition);
        }
        .sport-card:hover .icon-wrap {
            background: var(--primary);
            color: #fff;
        }
        .sport-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .sport-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 14px;
        }
        .sport-card .badge {
            display: inline-block;
            background: var(--primary-bg);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 2px 14px;
            border-radius: 50px;
        }

        @media (max-width: 1024px) {
            .sport-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .sport-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 赛事列表（图文混合） ===== */
        .event-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .event-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .event-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .event-card .event-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
        }
        .event-card .event-body {
            padding: 20px 20px 24px;
        }
        .event-card .event-tag {
            display: inline-block;
            background: var(--primary-bg);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 50px;
            margin-bottom: 8px;
        }
        .event-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.35;
        }
        .event-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .event-card .event-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .event-card .event-meta i {
            margin-right: 4px;
        }
        .event-card .event-meta .live {
            color: var(--primary);
            font-weight: 600;
        }

        @media (max-width: 1024px) {
            .event-list {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .event-list {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 数据统计条 ===== */
        .stats-bar {
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: 60px 0;
            position: relative;
        }
        .stats-bar::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(10, 22, 40, 0.85);
            z-index: 1;
        }
        .stats-bar .container {
            position: relative;
            z-index: 2;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stats-item .stat-number {
            font-size: 44px;
            font-weight: 800;
            color: #fff;
            line-height: 1.1;
            letter-spacing: -0.5px;
        }
        .stats-item .stat-number span {
            color: var(--primary-light);
        }
        .stats-item .stat-label {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 6px;
            font-weight: 500;
        }

        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px 16px;
            }
            .stats-item .stat-number {
                font-size: 34px;
            }
        }
        @media (max-width: 420px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        /* ===== 赛事流程 ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .process-step {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 20px 28px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            position: relative;
            transition: var(--transition);
        }
        .process-step:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .process-step::before {
            counter-increment: step;
            content: "0" counter(step);
            position: absolute;
            top: 12px;
            left: 16px;
            font-size: 32px;
            font-weight: 800;
            color: rgba(230, 57, 70, 0.10);
            line-height: 1;
        }
        .process-step .step-icon {
            font-size: 36px;
            color: var(--primary);
            margin-bottom: 14px;
        }
        .process-step h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .process-step p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        @media (max-width: 1024px) {
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .process-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-grid {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary);
        }
        .faq-question {
            width: 100%;
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            text-align: left;
            gap: 12px;
        }
        .faq-question i {
            color: var(--primary);
            font-size: 18px;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.40s ease, padding 0.30s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 320px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: 72px 0;
            text-align: center;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(10, 22, 40, 0.82);
            z-index: 1;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 38px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.75);
            max-width: 520px;
            margin: 0 auto 28px;
        }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--primary);
            color: #fff;
            padding: 16px 40px;
            border-radius: 60px;
            font-size: 18px;
            font-weight: 700;
            transition: var(--transition);
            box-shadow: 0 8px 28px rgba(230, 57, 70, 0.35);
        }
        .cta-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-3px) scale(1.02);
            box-shadow: 0 12px 36px rgba(230, 57, 70, 0.45);
            color: #fff;
        }

        @media (max-width: 640px) {
            .cta-section h2 {
                font-size: 28px;
            }
            .cta-section p {
                font-size: 16px;
            }
            .cta-btn {
                padding: 14px 32px;
                font-size: 16px;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-darker);
            color: rgba(255, 255, 255, 0.70);
            padding: 56px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.4fr;
            gap: 36px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-brand .site-logo {
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 24px;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.40);
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.50);
            font-size: 16px;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 工具类 ===== */
        .text-center {
            text-align: center;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .gap-12 {
            gap: 12px;
        }

        /* ===== Foundation 覆盖 ===== */
        .grid-container {
            max-width: var(--container-max);
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 640px) {
            .grid-container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 768px) {
            body {
                padding-top: 64px;
            }
            :root {
                --header-height: 64px;
            }
            .site-logo {
                font-size: 18px;
            }
            .site-logo i {
                font-size: 20px;
            }
        }

/* roulang page: article */
:root {
            --primary: #E63946;
            --primary-dark: #C1121F;
            --primary-light: #F1FAEE;
            --secondary: #1D3557;
            --secondary-light: #457B9D;
            --accent: #A8DADC;
            --bg-dark: #0B1A2C;
            --bg-card: #ffffff;
            --bg-light: #F8F9FA;
            --text-dark: #1A1A2E;
            --text-body: #2D3436;
            --text-muted: #636E72;
            --text-light: #DFE6E9;
            --border-color: #E8E8E8;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.10);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.15);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
            --max-width: 1200px;
            --nav-height: 72px;
        }
        *,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
        html{scroll-behavior:smooth;}
        body{
            font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
            background:var(--bg-light);color:var(--text-body);line-height:1.7;font-size:16px;
            -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
        }
        a{color:var(--secondary);text-decoration:none;transition:color var(--transition);}
        a:hover{color:var(--primary);}
        a:focus-visible{outline:3px solid var(--primary);outline-offset:2px;border-radius:4px;}
        img{max-width:100%;height:auto;display:block;}
        ul,ol{padding-left:0;list-style:none;}
        h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.25;color:var(--text-dark);}
        .container{max-width:var(--max-width);margin:0 auto;padding:0 24px;}
        .container-fluid{width:100%;padding:0 24px;}

        /* ===== 导航 ===== */
        .site-header{
            position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--nav-height);
            background:rgba(255,255,255,0.85);backdrop-filter:blur(20px) saturate(180%);
            -webkit-backdrop-filter:blur(20px) saturate(180%);
            border-bottom:1px solid rgba(0,0,0,0.05);transition:background var(--transition);
        }
        .site-header .container{
            display:flex;align-items:center;justify-content:space-between;height:100%;
        }
        .site-logo{
            display:flex;align-items:center;gap:10px;font-size:22px;font-weight:800;
            color:var(--text-dark);letter-spacing:-0.5px;
        }
        .site-logo i{color:var(--primary);font-size:24px;}
        .site-logo span{background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;}
        .nav-toggle{display:none;background:none;border:none;font-size:26px;color:var(--text-dark);cursor:pointer;padding:4px 8px;border-radius:var(--radius-sm);}
        .nav-toggle:focus-visible{outline:3px solid var(--primary);outline-offset:2px;}
        .nav-links{display:flex;align-items:center;gap:6px;}
        .nav-links a{
            padding:8px 18px;border-radius:40px;font-size:15px;font-weight:500;
            color:var(--text-body);transition:all var(--transition);position:relative;
        }
        .nav-links a:hover{color:var(--primary);background:rgba(230,57,70,0.08);}
        .nav-links a.active{color:#fff;background:var(--primary);box-shadow:0 4px 16px rgba(230,57,70,0.30);}
        .nav-links a.active:hover{background:var(--primary-dark);color:#fff;}
        .nav-links a.nav-cta{
            background:var(--secondary);color:#fff;padding:8px 22px;border-radius:40px;
            box-shadow:0 4px 14px rgba(29,53,87,0.25);font-weight:600;display:flex;align-items:center;gap:6px;
        }
        .nav-links a.nav-cta:hover{background:var(--primary);transform:translateY(-1px);box-shadow:0 6px 20px rgba(230,57,70,0.35);}
        .nav-links a.nav-cta i{font-size:14px;}

        @media (max-width:768px){
            .nav-toggle{display:block;}
            .nav-links{
                display:none;position:absolute;top:var(--nav-height);left:0;right:0;
                background:rgba(255,255,255,0.98);backdrop-filter:blur(20px);
                flex-direction:column;padding:16px 24px 24px;gap:8px;
                border-bottom:1px solid var(--border-color);box-shadow:var(--shadow-md);
            }
            .nav-links.open{display:flex;}
            .nav-links a{width:100%;padding:12px 18px;font-size:16px;}
            .nav-links a.nav-cta{justify-content:center;}
        }

        /* ===== 文章 Banner ===== */
        .article-banner{
            margin-top:var(--nav-height);padding:80px 0 60px;
            background:linear-gradient(135deg,var(--bg-dark) 0%,#0F2A44 50%,var(--secondary) 100%);
            position:relative;overflow:hidden;
        }
        .article-banner::before{
            content:'';position:absolute;inset:0;
            background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity:0.12;mix-blend-mode:overlay;
        }
        .article-banner .container{position:relative;z-index:2;}
        .article-breadcrumb{
            display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:20px;
            font-size:14px;color:rgba(255,255,255,0.65);
        }
        .article-breadcrumb a{color:rgba(255,255,255,0.8);}
        .article-breadcrumb a:hover{color:#fff;}
        .article-breadcrumb .sep{color:rgba(255,255,255,0.4);}
        .article-banner h1{
            font-size:clamp(28px,4vw,48px);color:#fff;max-width:860px;
            margin-bottom:16px;letter-spacing:-0.5px;
        }
        .article-meta{
            display:flex;flex-wrap:wrap;gap:16px 28px;align-items:center;
            color:rgba(255,255,255,0.75);font-size:15px;
        }
        .article-meta .tag{
            display:inline-block;padding:4px 16px;border-radius:40px;
            background:rgba(230,57,70,0.20);color:var(--primary-light);
            font-size:13px;font-weight:500;border:1px solid rgba(230,57,70,0.30);
        }
        .article-meta i{margin-right:6px;color:var(--accent);}

        /* ===== 文章主体 ===== */
        .article-main{padding:60px 0 80px;}
        .article-layout{
            display:grid;grid-template-columns:1fr 320px;gap:48px;
        }
        .article-content{
            background:var(--bg-card);border-radius:var(--radius-lg);padding:40px 44px;
            box-shadow:var(--shadow-sm);border:1px solid var(--border-color);
        }
        .article-content h2{
            font-size:26px;margin-top:40px;margin-bottom:16px;color:var(--text-dark);
            padding-left:16px;border-left:4px solid var(--primary);
        }
        .article-content h3{font-size:20px;margin-top:32px;margin-bottom:12px;color:var(--secondary);}
        .article-content p{font-size:16px;line-height:1.9;margin-bottom:20px;color:var(--text-body);}
        .article-content ul,.article-content ol{padding-left:24px;margin-bottom:20px;list-style:disc;}
        .article-content ul li,.article-content ol li{margin-bottom:8px;color:var(--text-body);}
        .article-content blockquote{
            margin:28px 0;padding:20px 28px;background:var(--bg-light);
            border-left:5px solid var(--primary);border-radius:var(--radius-sm);
            font-style:italic;color:var(--text-muted);font-size:17px;
        }
        .article-content .content-img{
            border-radius:var(--radius-md);margin:28px 0;overflow:hidden;
            box-shadow:var(--shadow-sm);
        }
        .article-content .content-img img{width:100%;}
        .article-content .content-img figcaption{text-align:center;padding:12px;font-size:14px;color:var(--text-muted);background:var(--bg-light);}
        .article-content .highlight-card{
            background:linear-gradient(135deg,var(--bg-light),#fff);border-radius:var(--radius-md);
            padding:24px 28px;margin:28px 0;border:1px solid var(--border-color);
            box-shadow:var(--shadow-sm);
        }
        .article-content .highlight-card .num{font-size:36px;font-weight:800;color:var(--primary);display:block;margin-bottom:4px;}

        .article-sidebar{position:sticky;top:calc(var(--nav-height) + 24px);align-self:start;}
        .sidebar-card{
            background:var(--bg-card);border-radius:var(--radius-md);padding:24px;
            box-shadow:var(--shadow-sm);border:1px solid var(--border-color);margin-bottom:24px;
        }
        .sidebar-card h4{font-size:17px;margin-bottom:16px;padding-bottom:12px;border-bottom:2px solid var(--primary);display:inline-block;}
        .sidebar-card .side-link{
            display:flex;align-items:center;gap:12px;padding:12px 0;
            border-bottom:1px solid var(--border-color);font-size:15px;color:var(--text-body);transition:all var(--transition);
        }
        .sidebar-card .side-link:last-child{border-bottom:none;}
        .sidebar-card .side-link:hover{color:var(--primary);padding-left:8px;}
        .sidebar-card .side-link i{color:var(--primary);font-size:14px;width:20px;text-align:center;}
        .sidebar-card .side-link .badge{
            margin-left:auto;background:var(--primary);color:#fff;font-size:12px;
            padding:2px 12px;border-radius:40px;font-weight:600;
        }
        .sidebar-cta{
            background:linear-gradient(135deg,var(--secondary),var(--bg-dark));
            border-radius:var(--radius-md);padding:28px 24px;text-align:center;color:#fff;
        }
        .sidebar-cta h4{color:#fff;font-size:18px;margin-bottom:8px;border-bottom:none;display:block;padding-bottom:0;}
        .sidebar-cta p{color:rgba(255,255,255,0.75);font-size:14px;margin-bottom:18px;}
        .sidebar-cta .btn{
            display:inline-flex;align-items:center;gap:8px;background:var(--primary);
            color:#fff;padding:12px 32px;border-radius:40px;font-weight:600;
            box-shadow:0 4px 16px rgba(230,57,70,0.35);transition:all var(--transition);
        }
        .sidebar-cta .btn:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 8px 28px rgba(230,57,70,0.45);}

        /* ===== 相关文章 ===== */
        .related-section{padding:60px 0 80px;background:var(--bg-light);}
        .related-section .section-title{font-size:28px;margin-bottom:8px;}
        .related-section .section-sub{color:var(--text-muted);margin-bottom:36px;font-size:16px;}
        .related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
        .related-card{
            background:var(--bg-card);border-radius:var(--radius-md);overflow:hidden;
            box-shadow:var(--shadow-sm);border:1px solid var(--border-color);
            transition:all var(--transition);display:flex;flex-direction:column;
        }
        .related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
        .related-card .card-img{height:180px;overflow:hidden;position:relative;}
        .related-card .card-img img{width:100%;height:100%;object-fit:cover;transition:transform 0.5s;}
        .related-card:hover .card-img img{transform:scale(1.05);}
        .related-card .card-img .tag-overlay{
            position:absolute;top:12px;left:12px;background:var(--primary);color:#fff;
            font-size:12px;font-weight:600;padding:4px 14px;border-radius:40px;
        }
        .related-card .card-body{padding:20px 22px 24px;flex:1;display:flex;flex-direction:column;}
        .related-card .card-body h3{font-size:17px;margin-bottom:8px;flex:1;}
        .related-card .card-body h3 a{color:var(--text-dark);}
        .related-card .card-body h3 a:hover{color:var(--primary);}
        .related-card .card-body .meta{font-size:13px;color:var(--text-muted);display:flex;gap:16px;margin-top:12px;}
        .related-card .card-body .meta i{margin-right:4px;}

        /* ===== 页脚 ===== */
        .site-footer{
            background:var(--bg-dark);color:rgba(255,255,255,0.85);padding:60px 0 0;
        }
        .site-footer .container{max-width:var(--max-width);margin:0 auto;padding:0 24px;}
        .footer-grid{
            display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:40px;
            padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,0.08);
        }
        .footer-brand .site-logo{color:#fff;margin-bottom:12px;font-size:24px;}
        .footer-brand .site-logo i{color:var(--primary);}
        .footer-brand .site-logo span{-webkit-text-fill-color:#fff;background:none;}
        .footer-brand p{font-size:14px;color:rgba(255,255,255,0.6);max-width:320px;line-height:1.8;}
        .footer-col h4{color:#fff;font-size:16px;margin-bottom:18px;font-weight:600;}
        .footer-col a{
            display:block;color:rgba(255,255,255,0.6);font-size:14px;padding:6px 0;
            transition:all var(--transition);
        }
        .footer-col a:hover{color:var(--primary);padding-left:6px;}
        .footer-col .tag{display:inline-block;padding:4px 14px;border-radius:40px;font-size:12px;font-weight:500;}
        .footer-bottom{
            display:flex;justify-content:space-between;align-items:center;
            padding:24px 0;flex-wrap:wrap;gap:12px;
        }
        .footer-bottom p{font-size:13px;color:rgba(255,255,255,0.45);}
        .footer-social{display:flex;gap:12px;}
        .footer-social a{
            display:flex;align-items:center;justify-content:center;
            width:40px;height:40px;border-radius:50%;
            background:rgba(255,255,255,0.06);color:rgba(255,255,255,0.6);
            font-size:18px;transition:all var(--transition);
        }
        .footer-social a:hover{background:var(--primary);color:#fff;transform:translateY(-2px);}

        /* ===== 响应式 ===== */
        @media (max-width:1024px){
            .article-layout{grid-template-columns:1fr;}
            .article-sidebar{position:static;}
            .related-grid{grid-template-columns:1fr 1fr;}
            .footer-grid{grid-template-columns:1fr 1fr;}
        }
        @media (max-width:768px){
            .article-banner{padding:60px 0 40px;}
            .article-banner h1{font-size:26px;}
            .article-content{padding:24px 20px;}
            .article-content h2{font-size:22px;margin-top:28px;}
            .related-grid{grid-template-columns:1fr;}
            .footer-grid{grid-template-columns:1fr;gap:28px;}
            .footer-bottom{flex-direction:column;text-align:center;}
        }
        @media (max-width:520px){
            .article-meta{flex-direction:column;gap:8px;align-items:flex-start;}
            .article-content{padding:18px 16px;border-radius:var(--radius-md);}
            .sidebar-card{padding:18px;}
        }

        /* ===== 通用工具 ===== */
        .btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:40px;font-weight:600;font-size:15px;border:none;cursor:pointer;transition:all var(--transition);}
        .btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 16px rgba(230,57,70,0.30);}
        .btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 8px 28px rgba(230,57,70,0.40);}
        .btn-secondary{background:var(--secondary);color:#fff;box-shadow:0 4px 16px rgba(29,53,87,0.25);}
        .btn-secondary:hover{background:var(--primary);transform:translateY(-2px);box-shadow:0 8px 28px rgba(230,57,70,0.35);}
        .btn-outline{background:transparent;color:var(--secondary);border:2px solid var(--secondary);}
        .btn-outline:hover{background:var(--secondary);color:#fff;transform:translateY(-2px);}
        .tag{display:inline-block;padding:4px 16px;border-radius:40px;font-size:13px;font-weight:500;background:rgba(230,57,70,0.08);color:var(--primary);border:1px solid rgba(230,57,70,0.15);}
        .text-center{text-align:center;}
        .mt-12{margin-top:12px;}
        .mb-12{margin-bottom:12px;}
        .gap-8{gap:8px;}
        .flex-center{display:flex;align-items:center;justify-content:center;}

        .article-not-found{
            text-align:center;padding:80px 24px;background:var(--bg-card);
            border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);
        }
        .article-not-found i{font-size:56px;color:var(--primary);margin-bottom:20px;display:block;}
        .article-not-found h2{font-size:28px;margin-bottom:12px;}
        .article-not-found p{color:var(--text-muted);margin-bottom:24px;}