/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #c62828;
            --color-primary-dark: #8e0000;
            --color-primary-light: #ff5f52;
            --color-accent: #f9a825;
            --color-accent-dark: #c67c00;
            --color-bg: #0f0f12;
            --color-bg-alt: #1a1a24;
            --color-bg-card: #1f1f2e;
            --color-bg-nav: #0a0a0e;
            --color-text: #f0f0f0;
            --color-text-muted: #9e9eb0;
            --color-text-dim: #6a6a7a;
            --color-border: #2a2a3a;
            --color-border-light: #3a3a4a;
            --color-success: #2e7d32;
            --color-warning: #f57f17;
            --color-info: #1565c0;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.4);
            --shadow-lg: 0 12px 48px rgba(0,0,0,0.5);
            --shadow-glow: 0 0 30px rgba(198,40,40,0.15);
            --font-sans: 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-display: 'Oswald', 'Noto Sans SC', sans-serif;
            --nav-width: 240px;
            --nav-collapsed: 0px;
            --header-height: 0px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --gap: 24px;
            --gap-lg: 48px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            background: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            font-size: 16px;
            display: flex;
            min-height: 100vh;
        }
        a { color: var(--color-accent); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--color-primary-light); }
        a:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 4px; border-radius: 4px; }
        img { max-width: 100%; height: auto; display: block; }
        button, input, select, 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: 1.3; font-weight: 700; color: var(--color-text); }
        h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); font-weight: 900; }
        h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 700; }
        h3 { font-size: clamp(1.2rem, 2vw, 1.6rem); font-weight: 700; }
        h4 { font-size: 1.1rem; font-weight: 600; }
        p { margin-bottom: 1rem; color: var(--color-text-muted); }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--gap);
            width: 100%;
        }

        /* ===== 左侧导航 ===== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background: var(--color-bg-nav);
            border-right: 1px solid var(--color-border);
            display: flex;
            flex-direction: column;
            z-index: 1000;
            padding: 0;
            overflow-y: auto;
            transition: transform var(--transition);
        }
        .site-nav .nav-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 28px 20px 20px;
            border-bottom: 1px solid var(--color-border);
        }
        .site-nav .nav-brand .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 18px;
            color: #fff;
            flex-shrink: 0;
        }
        .site-nav .nav-brand .logo-text {
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 18px;
            color: var(--color-text);
            line-height: 1.2;
            letter-spacing: 0.5px;
        }
        .site-nav .nav-brand .logo-text span { color: var(--color-primary-light); }
        .site-nav .nav-links {
            flex: 1;
            padding: 16px 12px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .site-nav .nav-links a {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: var(--color-text-muted);
            font-weight: 500;
            font-size: 15px;
            transition: all var(--transition);
            position: relative;
        }
        .site-nav .nav-links a i { width: 20px; text-align: center; font-size: 16px; }
        .site-nav .nav-links a:hover {
            background: var(--color-bg-card);
            color: var(--color-text);
        }
        .site-nav .nav-links a.active {
            background: rgba(198,40,40,0.15);
            color: var(--color-primary-light);
            border-left: 3px solid var(--color-primary);
        }
        .site-nav .nav-links a.active::after {
            content: '';
            position: absolute;
            right: 12px;
            top: 50%;
            transform: translateY(-50%);
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-primary-light);
            box-shadow: 0 0 12px rgba(198,40,40,0.5);
        }
        .site-nav .nav-footer {
            padding: 16px 20px;
            border-top: 1px solid var(--color-border);
            font-size: 12px;
            color: var(--color-text-dim);
            text-align: center;
        }

        /* ===== 移动端导航 ===== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: var(--color-bg-nav);
            border-bottom: 1px solid var(--color-border);
            z-index: 999;
            padding: 0 16px;
            align-items: center;
            justify-content: space-between;
        }
        .mobile-header .mobile-logo {
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 16px;
            color: var(--color-text);
        }
        .mobile-header .mobile-logo span { color: var(--color-primary-light); }
        .mobile-header .menu-toggle {
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-text);
            font-size: 22px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .mobile-header .menu-toggle:hover { background: var(--color-bg-card); }
        .nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.7);
            z-index: 998;
            opacity: 0;
            transition: opacity var(--transition);
        }
        .nav-overlay.open { opacity: 1; }

        /* ===== 主内容区 ===== */
        .main-wrapper {
            margin-left: var(--nav-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        .main-content { flex: 1; }

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            background: var(--color-bg);
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.35;
            z-index: 0;
        }
        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,15,18,0.92) 0%, rgba(15,15,18,0.6) 50%, rgba(15,15,18,0.85) 100%);
            z-index: 1;
        }
        .hero .hero-content {
            position: relative;
            z-index: 2;
            width: 100%;
            padding: 80px 0;
        }
        .hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(249,168,37,0.12);
            border: 1px solid rgba(249,168,37,0.25);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 500;
            color: var(--color-accent);
            margin-bottom: 24px;
            letter-spacing: 1px;
        }
        .hero .hero-badge i { font-size: 14px; }
        .hero h1 {
            font-family: var(--font-display);
            font-weight: 900;
            letter-spacing: -0.5px;
            max-width: 800px;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #fff 30%, var(--color-accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero .hero-desc {
            font-size: 1.15rem;
            color: var(--color-text-muted);
            max-width: 600px;
            margin-bottom: 32px;
            line-height: 1.8;
        }
        .hero .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        .hero .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid var(--color-border);
            max-width: 600px;
        }
        .hero .hero-stats .stat-item {
            text-align: left;
        }
        .hero .hero-stats .stat-num {
            font-family: var(--font-display);
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.2;
        }
        .hero .hero-stats .stat-num span { color: var(--color-primary-light); }
        .hero .hero-stats .stat-label {
            font-size: 13px;
            color: var(--color-text-dim);
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition);
            border: 2px solid transparent;
            letter-spacing: 0.5px;
            text-align: center;
            justify-content: center;
        }
        .btn:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 4px; }
        .btn-primary {
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            color: #fff;
            border-color: var(--color-primary);
        }
        .btn-primary:hover {
            background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(198,40,40,0.3);
        }
        .btn-primary:active { transform: translateY(0); }
        .btn-outline {
            background: transparent;
            color: var(--color-text);
            border-color: var(--color-border-light);
        }
        .btn-outline:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(249,168,37,0.1);
        }
        .btn-accent {
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
            color: #1a1a1a;
            border-color: var(--color-accent);
            font-weight: 700;
        }
        .btn-accent:hover {
            background: linear-gradient(135deg, #ffbf40, var(--color-accent));
            color: #1a1a1a;
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(249,168,37,0.3);
        }
        .btn-sm { padding: 10px 20px; font-size: 13px; }

        /* ===== 板块 ===== */
        .section {
            padding: 80px 0;
        }
        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 48px;
        }
        .section-header .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary-light);
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 12px;
            background: rgba(198,40,40,0.1);
            padding: 4px 16px;
            border-radius: 50px;
        }
        .section-header h2 { margin-bottom: 16px; }
        .section-header p { font-size: 1.05rem; color: var(--color-text-muted); }
        .section-alt { background: var(--color-bg-alt); }
        .section-dark { background: var(--color-bg-nav); }

        /* ===== 卡片网格 ===== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--gap);
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--gap);
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--gap);
        }

        .card {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            border: 1px solid var(--color-border);
            transition: all var(--transition);
        }
        .card:hover {
            transform: translateY(-4px);
            border-color: var(--color-border-light);
            box-shadow: var(--shadow-md), var(--shadow-glow);
        }
        .card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: rgba(198,40,40,0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--color-primary-light);
            margin-bottom: 18px;
        }
        .card h3 { margin-bottom: 10px; font-size: 1.1rem; }
        .card p { font-size: 14px; color: var(--color-text-muted); margin-bottom: 0; }

        /* ===== 特色卡片（大图） ===== */
        .feature-card {
            display: flex;
            flex-direction: column;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            transition: all var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md), var(--shadow-glow);
            border-color: var(--color-border-light);
        }
        .feature-card .feature-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .feature-card .feature-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .feature-card:hover .feature-img img { transform: scale(1.05); }
        .feature-card .feature-img .feature-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--color-primary);
            color: #fff;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.5px;
        }
        .feature-card .feature-body {
            padding: 22px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .feature-card .feature-body h3 { font-size: 1.1rem; margin-bottom: 8px; }
        .feature-card .feature-body p {
            font-size: 14px;
            color: var(--color-text-muted);
            flex: 1;
            margin-bottom: 16px;
        }
        .feature-card .feature-body .feature-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--color-text-dim);
        }
        .feature-card .feature-body .feature-meta i { margin-right: 4px; }

        /* ===== 内容列表（CMS） ===== */
        .content-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .content-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 20px 24px;
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            transition: all var(--transition);
        }
        .content-item:hover {
            border-color: var(--color-border-light);
            box-shadow: var(--shadow-sm);
            transform: translateX(4px);
        }
        .content-item .item-thumb {
            width: 80px;
            height: 80px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            background: var(--color-bg-alt);
        }
        .content-item .item-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .content-item .item-body { flex: 1; min-width: 0; }
        .content-item .item-body h4 {
            font-size: 1rem;
            margin-bottom: 6px;
            color: var(--color-text);
            transition: color var(--transition);
        }
        .content-item:hover .item-body h4 { color: var(--color-primary-light); }
        .content-item .item-body p {
            font-size: 14px;
            color: var(--color-text-muted);
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .content-item .item-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 12px;
            color: var(--color-text-dim);
        }
        .content-item .item-meta .item-cat {
            background: rgba(249,168,37,0.1);
            color: var(--color-accent);
            padding: 2px 12px;
            border-radius: 50px;
            font-weight: 500;
        }
        .content-item .item-meta i { margin-right: 4px; font-size: 11px; }

        /* ===== 流程 / 步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--gap);
            counter-reset: step;
        }
        .step-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            border: 1px solid var(--color-border);
            text-align: center;
            position: relative;
            transition: all var(--transition);
        }
        .step-card:hover {
            border-color: var(--color-border-light);
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .step-card .step-num {
            font-family: var(--font-display);
            font-size: 3rem;
            font-weight: 900;
            color: rgba(198,40,40,0.15);
            line-height: 1;
            margin-bottom: 12px;
        }
        .step-card .step-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(198,40,40,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--color-primary-light);
            margin: 0 auto 16px;
        }
        .step-card h4 { margin-bottom: 8px; font-size: 1rem; }
        .step-card p { font-size: 14px; color: var(--color-text-muted); margin-bottom: 0; }

        /* ===== 数据面板 ===== */
        .data-panel {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--gap);
        }
        .data-item {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            border: 1px solid var(--color-border);
            text-align: center;
            transition: all var(--transition);
        }
        .data-item:hover {
            border-color: var(--color-border-light);
            box-shadow: var(--shadow-sm);
        }
        .data-item .data-num {
            font-family: var(--font-display);
            font-size: 2.8rem;
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.2;
        }
        .data-item .data-num span { color: var(--color-primary-light); }
        .data-item .data-label {
            font-size: 14px;
            color: var(--color-text-dim);
            margin-top: 6px;
            letter-spacing: 1px;
        }
        .data-item .data-icon {
            font-size: 28px;
            color: var(--color-accent);
            margin-bottom: 12px;
            opacity: 0.6;
        }

        /* ===== FAQ ===== */
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--color-bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover { border-color: var(--color-border-light); }
        .faq-item .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-weight: 600;
            font-size: 15px;
            color: var(--color-text);
            cursor: pointer;
            transition: background var(--transition);
            user-select: none;
        }
        .faq-item .faq-q:hover { background: rgba(255,255,255,0.02); }
        .faq-item .faq-q i {
            color: var(--color-primary-light);
            transition: transform var(--transition);
            font-size: 14px;
        }
        .faq-item .faq-q.open i { transform: rotate(180deg); }
        .faq-item .faq-a {
            padding: 0 22px 18px;
            font-size: 14px;
            color: var(--color-text-muted);
            display: none;
            line-height: 1.8;
        }
        .faq-item .faq-a.open { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-bg-alt), var(--color-bg-card));
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }
        .cta-box {
            text-align: center;
            padding: 60px 0;
        }
        .cta-box h2 { margin-bottom: 16px; }
        .cta-box p { max-width: 560px; margin: 0 auto 32px; font-size: 1.05rem; }
        .cta-box .cta-actions { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--color-bg-nav);
            border-top: 1px solid var(--color-border);
            padding: 48px 0 28px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .site-footer .footer-brand .logo-text {
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 20px;
            color: var(--color-text);
            display: block;
            margin-bottom: 12px;
        }
        .site-footer .footer-brand .logo-text span { color: var(--color-primary-light); }
        .site-footer .footer-brand p { font-size: 14px; color: var(--color-text-dim); max-width: 300px; }
        .site-footer h4 {
            font-size: 14px;
            color: var(--color-text);
            margin-bottom: 16px;
            letter-spacing: 1px;
            text-transform: uppercase;
        }
        .site-footer .footer-links a {
            display: block;
            font-size: 14px;
            color: var(--color-text-dim);
            padding: 4px 0;
            transition: color var(--transition);
        }
        .site-footer .footer-links a:hover { color: var(--color-primary-light); }
        .site-footer .footer-bottom {
            border-top: 1px solid var(--color-border);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--color-text-dim);
        }
        .site-footer .footer-bottom a { color: var(--color-text-dim); }
        .site-footer .footer-bottom a:hover { color: var(--color-primary-light); }

        /* ===== 标签 ===== */
        .tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 500;
            background: rgba(249,168,37,0.1);
            color: var(--color-accent);
            transition: all var(--transition);
        }
        .tag:hover { background: rgba(249,168,37,0.2); }
        .tag-red {
            background: rgba(198,40,40,0.12);
            color: var(--color-primary-light);
        }
        .tag-red:hover { background: rgba(198,40,40,0.2); }

        /* ===== 分隔线 ===== */
        .divider {
            height: 1px;
            background: var(--color-border);
            width: 100%;
            margin: 0;
        }

        /* ===== 空状态 ===== */
        .empty-state {
            text-align: center;
            padding: 40px 20px;
            color: var(--color-text-dim);
        }
        .empty-state i { font-size: 48px; margin-bottom: 16px; opacity: 0.4; }
        .empty-state p { font-size: 15px; }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
            .steps-grid { grid-template-columns: repeat(2, 1fr); }
            .data-panel { grid-template-columns: repeat(2, 1fr); }
            .site-footer .footer-grid { grid-template-columns: 1fr 1fr; }
        }

        @media (max-width: 768px) {
            .site-nav { transform: translateX(-100%); }
            .site-nav.open { transform: translateX(0); }
            .mobile-header { display: flex; }
            .nav-overlay.open { display: block; }
            .main-wrapper { margin-left: 0; padding-top: 60px; }
            .hero { min-height: 70vh; }
            .hero .hero-stats { gap: 20px; }
            .hero .hero-stats .stat-num { font-size: 1.8rem; }
            .grid-3 { grid-template-columns: repeat(2, 1fr); }
            .grid-2 { grid-template-columns: 1fr; }
            .content-item { flex-direction: column; }
            .content-item .item-thumb { width: 100%; height: 160px; }
            .section { padding: 56px 0; }
            .site-footer .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .site-footer .footer-bottom { flex-direction: column; text-align: center; }
            .hero .hero-actions .btn { width: 100%; }
            .cta-box .cta-actions .btn { width: 100%; }
        }

        @media (max-width: 520px) {
            .grid-3 { grid-template-columns: 1fr; }
            .grid-4 { grid-template-columns: 1fr; }
            .steps-grid { grid-template-columns: 1fr; }
            .data-panel { grid-template-columns: 1fr; }
            .hero { min-height: 60vh; }
            .hero .hero-content { padding: 40px 0; }
            .hero .hero-stats { flex-direction: column; gap: 16px; }
            .section-header { margin-bottom: 32px; }
            .feature-card .feature-img { height: 160px; }
        }

        /* ===== 滚动条 ===== */
        .site-nav::-webkit-scrollbar { width: 4px; }
        .site-nav::-webkit-scrollbar-track { background: transparent; }
        .site-nav::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 4px; }
        .site-nav::-webkit-scrollbar-thumb:hover { background: var(--color-border-light); }

        /* ===== 工具类 ===== */
        .text-center { text-align: center; }
        .mt-16 { margin-top: 16px; }
        .mt-24 { margin-top: 24px; }
        .mb-16 { margin-bottom: 16px; }
        .mb-24 { margin-bottom: 24px; }
        .gap-8 { gap: 8px; }
        .gap-16 { gap: 16px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #2a4a7f;
            --accent: #f4a261;
            --bg-dark: #0b0f1a;
            --bg-card: #151f2e;
            --bg-section: #0d1321;
            --bg-body: #080b14;
            --text-primary: #f1f5f9;
            --text-secondary: #94a3b8;
            --text-muted: #64748b;
            --border-color: #1e2d45;
            --border-light: #2a3f5a;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.4);
            --shadow-lg: 0 16px 50px rgba(0,0,0,0.5);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --container-max: 1280px;
            --sidebar-width: 220px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
            display: flex;
            min-height: 100vh;
        }
        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }
        h1 { font-size: 2.2rem; }
        h2 { font-size: 1.8rem; }
        h3 { font-size: 1.4rem; }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 1rem; color: var(--text-secondary); }
        .container { width: 100%; max-width: var(--container-max); margin: 0 auto; padding: 0 1.5rem; }
        ul { list-style: none; }

        /* ===== 左侧导航 ===== */
        .site-nav {
            position: fixed;
            left: 0; top: 0; bottom: 0;
            width: var(--sidebar-width);
            background: var(--bg-card);
            border-right: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            padding: 1.5rem 1rem;
            z-index: 1000;
            overflow-y: auto;
            transition: var(--transition);
        }
        .nav-brand {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding-bottom: 1.5rem;
            border-bottom: 1px solid var(--border-color);
            margin-bottom: 1.5rem;
        }
        .logo-icon {
            width: 40px; height: 40px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex; align-items: center; justify-content: center;
            font-weight: 800; font-size: 1.1rem; color: #fff;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 1.2rem; font-weight: 800; color: var(--text-primary);
            letter-spacing: -0.5px;
        }
        .logo-text span { color: var(--primary); }
        .nav-links { display: flex; flex-direction: column; gap: 0.3rem; flex: 1; }
        .nav-links a {
            display: flex; align-items: center; gap: 0.7rem;
            padding: 0.7rem 0.9rem;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-size: 0.92rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .nav-links a i { width: 18px; text-align: center; font-size: 0.95rem; }
        .nav-links a:hover { background: rgba(230, 57, 70, 0.08); color: var(--text-primary); }
        .nav-links a.active { background: rgba(230, 57, 70, 0.15); color: var(--primary-light); font-weight: 600; }
        .nav-footer {
            padding-top: 1.2rem;
            border-top: 1px solid var(--border-color);
            font-size: 0.75rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== 主内容区 ===== */
        .main-wrapper {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ===== 文章 Banner ===== */
        .article-banner {
            position: relative;
            padding: 4rem 0 3rem;
            background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-card) 100%);
            border-bottom: 1px solid var(--border-color);
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }
        .article-banner .container { position: relative; z-index: 1; }
        .article-breadcrumb {
            display: flex; align-items: center; gap: 0.5rem;
            font-size: 0.85rem; color: var(--text-muted); margin-bottom: 1.2rem;
            flex-wrap: wrap;
        }
        .article-breadcrumb a { color: var(--text-muted); }
        .article-breadcrumb a:hover { color: var(--primary-light); }
        .article-breadcrumb .sep { color: var(--border-light); }
        .article-breadcrumb .current { color: var(--text-secondary); }
        .article-category-badge {
            display: inline-block;
            background: rgba(230, 57, 70, 0.18);
            color: var(--primary-light);
            padding: 0.25rem 0.9rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 1rem;
            border: 1px solid rgba(230, 57, 70, 0.25);
        }
        .article-banner h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.25;
            max-width: 900px;
            margin-bottom: 1rem;
            background: linear-gradient(135deg, #fff 60%, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .article-meta {
            display: flex; align-items: center; gap: 1.5rem;
            flex-wrap: wrap;
            color: var(--text-muted);
            font-size: 0.88rem;
        }
        .article-meta i { margin-right: 0.3rem; font-size: 0.8rem; }
        .article-meta .meta-item { display: flex; align-items: center; gap: 0.3rem; }

        /* ===== 文章正文 ===== */
        .article-content-section {
            padding: 3rem 0 4rem;
            background: var(--bg-body);
        }
        .article-content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 2.5rem;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }
        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-secondary);
        }
        .article-body .content p { margin-bottom: 1.3rem; }
        .article-body .content h2,
        .article-body .content h3,
        .article-body .content h4 {
            margin-top: 2rem;
            margin-bottom: 0.8rem;
            color: var(--text-primary);
        }
        .article-body .content ul,
        .article-body .content ol {
            margin-bottom: 1.3rem;
            padding-left: 1.5rem;
        }
        .article-body .content li {
            margin-bottom: 0.4rem;
            color: var(--text-secondary);
            list-style: disc;
        }
        .article-body .content blockquote {
            border-left: 4px solid var(--primary);
            padding: 0.8rem 1.2rem;
            margin: 1.5rem 0;
            background: rgba(230, 57, 70, 0.06);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
        }
        .article-body .content img { margin: 1.5rem 0; border-radius: var(--radius-md); }
        .article-body .content a { color: var(--primary-light); text-decoration: underline; }

        .article-not-found {
            text-align: center;
            padding: 4rem 2rem;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
        }
        .article-not-found i { font-size: 3rem; color: var(--text-muted); margin-bottom: 1rem; }
        .article-not-found h2 { font-size: 1.8rem; margin-bottom: 0.8rem; }
        .article-not-found p { color: var(--text-muted); margin-bottom: 1.5rem; }
        .article-not-found .btn-back {
            display: inline-flex; align-items: center; gap: 0.5rem;
            padding: 0.7rem 1.8rem;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 600;
        }
        .article-not-found .btn-back:hover { background: var(--primary-dark); transform: translateY(-1px); }

        /* ===== 侧边栏 ===== */
        .article-sidebar { display: flex; flex-direction: column; gap: 1.5rem; }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }
        .sidebar-card h3 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 1rem;
            padding-bottom: 0.6rem;
            border-bottom: 2px solid var(--primary);
            display: inline-block;
        }
        .sidebar-list { display: flex; flex-direction: column; gap: 0.8rem; }
        .sidebar-list-item {
            display: flex; gap: 0.8rem;
            padding: 0.6rem 0;
            border-bottom: 1px solid var(--border-color);
        }
        .sidebar-list-item:last-child { border-bottom: none; }
        .sidebar-list-item .thumb {
            width: 60px; height: 60px;
            border-radius: var(--radius-sm);
            background: var(--bg-dark);
            flex-shrink: 0;
            overflow: hidden;
        }
        .sidebar-list-item .thumb img { width: 100%; height: 100%; object-fit: cover; }
        .sidebar-list-item .info { flex: 1; min-width: 0; }
        .sidebar-list-item .info a {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-primary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.4;
        }
        .sidebar-list-item .info a:hover { color: var(--primary-light); }
        .sidebar-list-item .info .s-date { font-size: 0.75rem; color: var(--text-muted); margin-top: 0.2rem; }

        .sidebar-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }
        .sidebar-tags a {
            padding: 0.3rem 0.8rem;
            background: rgba(230, 57, 70, 0.08);
            border: 1px solid var(--border-color);
            border-radius: 20px;
            font-size: 0.78rem;
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .sidebar-tags a:hover {
            background: rgba(230, 57, 70, 0.18);
            border-color: var(--primary);
            color: var(--primary-light);
        }

        /* ===== 相关文章 ===== */
        .related-section {
            padding: 3rem 0 4rem;
            background: var(--bg-section);
            border-top: 1px solid var(--border-color);
        }
        .related-section h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 2rem;
            display: flex; align-items: center; gap: 0.6rem;
        }
        .related-section h2 i { color: var(--primary); font-size: 1.3rem; }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--border-light); }
        .related-card .r-img {
            width: 100%; height: 180px;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .related-card .r-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .related-card:hover .r-img img { transform: scale(1.05); }
        .related-card .r-body { padding: 1.2rem 1.2rem 1.5rem; }
        .related-card .r-body .r-cat {
            font-size: 0.75rem; color: var(--primary-light);
            font-weight: 600; text-transform: uppercase;
            margin-bottom: 0.4rem;
        }
        .related-card .r-body h3 { font-size: 1rem; margin-bottom: 0.5rem; }
        .related-card .r-body h3 a { color: var(--text-primary); }
        .related-card .r-body h3 a:hover { color: var(--primary-light); }
        .related-card .r-body p { font-size: 0.85rem; color: var(--text-muted); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
            padding: 3rem 0 1.5rem;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-brand .logo-text { font-size: 1.4rem; display: inline-block; margin-bottom: 0.8rem; }
        .footer-brand p { font-size: 0.88rem; color: var(--text-muted); line-height: 1.7; max-width: 320px; }
        .footer-links h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 1rem; color: var(--text-primary); }
        .footer-links a {
            display: block;
            font-size: 0.85rem;
            color: var(--text-muted);
            padding: 0.3rem 0;
            transition: var(--transition);
        }
        .footer-links a:hover { color: var(--primary-light); padding-left: 4px; }
        .footer-links a i { width: 18px; margin-right: 0.3rem; }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.8rem;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .article-content-grid {
                grid-template-columns: 1fr;
            }
            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }

        @media (max-width: 768px) {
            :root { --sidebar-width: 0px; }
            .site-nav {
                transform: translateX(-100%);
                width: 240px;
            }
            .site-nav.open { transform: translateX(0); }
            .main-wrapper { margin-left: 0; }
            .mobile-nav-toggle {
                display: flex !important;
            }
            .article-banner h1 { font-size: 1.8rem; }
            .article-body { padding: 1.5rem; }
            .article-body .content { font-size: 0.98rem; }
            .article-sidebar { grid-template-columns: 1fr; }
            .related-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .article-banner { padding: 3rem 0 2rem; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 1rem; }
            .article-banner h1 { font-size: 1.5rem; }
            .article-meta { gap: 0.8rem; font-size: 0.8rem; }
            .article-body { padding: 1rem; }
            .related-card .r-img { height: 140px; }
            .article-breadcrumb { font-size: 0.78rem; }
        }

        /* ===== 移动端菜单按钮 ===== */
        .mobile-nav-toggle {
            display: none;
            position: fixed;
            top: 1rem; left: 1rem;
            z-index: 1100;
            width: 42px; height: 42px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            font-size: 1.2rem;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .mobile-nav-toggle:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.6);
            z-index: 999;
            backdrop-filter: blur(4px);
        }
        .mobile-nav-overlay.show { display: block; }

        /* ===== 辅助 ===== */
        .text-center { text-align: center; }
        .mt-2 { margin-top: 1rem; }
        .mb-2 { margin-bottom: 1rem; }
        .gap-1 { gap: 0.5rem; }
        .flex { display: flex; }
        .flex-wrap { flex-wrap: wrap; }
        .items-center { align-items: center; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #c8a050;
            --primary-dark: #a88430;
            --primary-light: #e8c878;
            --accent: #d43f3f;
            --accent-hover: #b83030;
            --bg-dark: #0a0c10;
            --bg-panel: #12151c;
            --bg-card: #1a1e28;
            --bg-card-hover: #222736;
            --text-main: #e8e6e3;
            --text-secondary: #9a9894;
            --text-muted: #6a6864;
            --border-color: #2a2e3a;
            --border-light: #3a3e4a;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --nav-width: 240px;
        }

        /* ===== 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);
            background: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.6;
            display: flex;
            min-height: 100vh;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-light);
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 4px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: 1rem;
            border: none;
            outline: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 600;
            line-height: 1.25;
            color: var(--text-main);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 左侧导航 ===== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background: var(--bg-panel);
            border-right: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            padding: 28px 0 20px;
            z-index: 1000;
            overflow-y: auto;
            transition: transform var(--transition);
        }
        .nav-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 0 20px 28px;
            border-bottom: 1px solid var(--border-color);
            margin-bottom: 16px;
        }
        .logo-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            color: #0a0c10;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: -0.5px;
        }
        .logo-text span {
            color: var(--primary);
        }
        .nav-links {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 4px;
            padding: 0 12px;
        }
        .nav-links a {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            position: relative;
        }
        .nav-links a i {
            width: 20px;
            text-align: center;
            font-size: 1.05rem;
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .nav-links a:hover {
            background: var(--bg-card);
            color: var(--text-main);
        }
        .nav-links a:hover i {
            color: var(--primary);
        }
        .nav-links a.active {
            background: rgba(200, 160, 80, 0.12);
            color: var(--primary);
        }
        .nav-links a.active i {
            color: var(--primary);
        }
        .nav-links a.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 24px;
            background: var(--primary);
            border-radius: 0 4px 4px 0;
        }
        .nav-footer {
            padding: 20px 20px 0;
            border-top: 1px solid var(--border-color);
            margin-top: 16px;
            font-size: 0.75rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== 移动端导航切换 ===== */
        .nav-toggle {
            display: none;
            position: fixed;
            top: 16px;
            left: 16px;
            z-index: 1100;
            width: 44px;
            height: 44px;
            background: var(--bg-panel);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            color: var(--text-main);
            font-size: 1.3rem;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-sm);
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: var(--bg-card);
        }
        .nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 999;
            backdrop-filter: blur(4px);
        }

        /* ===== 主内容区 ===== */
        .main-content {
            margin-left: var(--nav-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ===== Hero / Banner ===== */
        .category-hero {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(135deg, #0a0c10 0%, #1a1e28 100%);
            overflow: hidden;
            min-height: 380px;
            display: flex;
            align-items: center;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.25;
            transform: scale(1.05);
        }
        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(10, 12, 16, 0.92) 0%, rgba(10, 12, 16, 0.6) 60%, transparent 100%);
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
            width: 100%;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(200, 160, 80, 0.15);
            border: 1px solid rgba(200, 160, 80, 0.3);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            color: var(--primary);
            font-weight: 500;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }
        .hero-badge i {
            font-size: 0.75rem;
        }
        .category-hero h1 {
            font-size: 3rem;
            font-weight: 700;
            letter-spacing: -1px;
            max-width: 700px;
            margin-bottom: 16px;
            background: linear-gradient(135deg, var(--text-main) 60%, var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .category-hero p {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 600px;
            line-height: 1.7;
            margin-bottom: 28px;
        }
        .hero-stats {
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
        }
        .hero-stat {
            display: flex;
            flex-direction: column;
        }
        .hero-stat-number {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 72px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            letter-spacing: -0.5px;
            margin-bottom: 12px;
        }
        .section-header p {
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
            font-size: 1.05rem;
        }
        .section-header .section-line {
            width: 60px;
            height: 3px;
            background: var(--primary);
            margin: 16px auto 0;
            border-radius: 4px;
        }
        .section-bg-alt {
            background: var(--bg-panel);
        }
        .section-bg-dark {
            background: var(--bg-dark);
        }

        /* ===== 赛事分类卡片网格 ===== */
        .sports-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .sport-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
            cursor: pointer;
        }
        .sport-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-light);
            box-shadow: var(--shadow-md);
            background: var(--bg-card-hover);
        }
        .sport-card-image {
            height: 180px;
            background: var(--bg-panel);
            position: relative;
            overflow: hidden;
        }
        .sport-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .sport-card:hover .sport-card-image img {
            transform: scale(1.05);
        }
        .sport-card-image .sport-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--accent);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 50px;
            letter-spacing: 0.3px;
        }
        .sport-card-body {
            padding: 20px;
        }
        .sport-card-body h3 {
            font-size: 1.15rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .sport-card-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 14px;
        }
        .sport-card-body .sport-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .sport-card-body .sport-meta i {
            margin-right: 4px;
            color: var(--primary);
        }

        /* ===== 热门赛事推荐 ===== */
        .hot-events-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .hot-event-card {
            display: flex;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
        }
        .hot-event-card:hover {
            border-color: var(--border-light);
            box-shadow: var(--shadow-sm);
            background: var(--bg-card-hover);
        }
        .hot-event-thumb {
            width: 160px;
            min-height: 140px;
            flex-shrink: 0;
            background: var(--bg-panel);
            overflow: hidden;
        }
        .hot-event-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .hot-event-card:hover .hot-event-thumb img {
            transform: scale(1.05);
        }
        .hot-event-info {
            padding: 18px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .hot-event-info .event-badge {
            display: inline-block;
            font-size: 0.7rem;
            font-weight: 600;
            color: var(--primary);
            background: rgba(200, 160, 80, 0.12);
            padding: 2px 10px;
            border-radius: 50px;
            margin-bottom: 8px;
            width: fit-content;
        }
        .hot-event-info h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .hot-event-info p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.5;
            margin-bottom: 10px;
        }
        .hot-event-info .event-time {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .hot-event-info .event-time i {
            color: var(--accent);
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 20px;
            text-align: center;
            transition: all var(--transition);
        }
        .stat-item:hover {
            border-color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(200, 160, 80, 0.08);
        }
        .stat-icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .stat-number {
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        /* ===== 赛事资讯列表 ===== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-item {
            display: flex;
            align-items: flex-start;
            gap: 18px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            transition: all var(--transition);
        }
        .news-item:hover {
            border-color: var(--border-light);
            background: var(--bg-card-hover);
            transform: translateX(4px);
        }
        .news-item .news-icon {
            width: 40px;
            height: 40px;
            background: rgba(200, 160, 80, 0.12);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .news-item .news-content {
            flex: 1;
        }
        .news-item .news-content h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .news-item .news-content p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }
        .news-item .news-meta {
            font-size: 0.78rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 6px;
        }
        .news-item .news-meta i {
            color: var(--primary);
            margin-right: 4px;
        }

        /* ===== FAQ ===== */
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-light);
        }
        .faq-question {
            padding: 18px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 500;
            font-size: 1rem;
            color: var(--text-main);
            transition: color var(--transition);
            user-select: none;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            color: var(--primary);
            transition: transform var(--transition);
            font-size: 0.85rem;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 0.93rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 200px;
            padding: 0 24px 18px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-panel) 0%, #1a1e28 100%);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            text-align: center;
            padding: 64px 0;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: var(--text-secondary);
            max-width: 520px;
            margin: 0 auto 28px;
            font-size: 1.05rem;
        }
        .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            border: 1px solid transparent;
        }
        .btn-primary {
            background: var(--primary);
            color: #0a0c10;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #0a0c10;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(200, 160, 80, 0.25);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-main);
            border-color: var(--border-light);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-panel);
            border-top: 1px solid var(--border-color);
            padding: 56px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .logo-text {
            font-size: 1.3rem;
            display: inline-block;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-links h4 {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--text-main);
        }
        .footer-links a {
            display: block;
            font-size: 0.88rem;
            color: var(--text-secondary);
            padding: 4px 0;
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary);
        }
        .footer-links a i {
            margin-right: 8px;
            color: var(--primary);
            width: 16px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .sports-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-hero h1 {
                font-size: 2.4rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-width: 0px;
            }
            .site-nav {
                transform: translateX(-100%);
                width: 280px;
            }
            .site-nav.open {
                transform: translateX(0);
            }
            .nav-toggle {
                display: flex;
            }
            .nav-overlay.show {
                display: block;
            }
            .main-content {
                margin-left: 0;
            }
            .category-hero {
                padding: 80px 0 60px;
                min-height: 300px;
            }
            .category-hero h1 {
                font-size: 2rem;
            }
            .category-hero p {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 24px;
            }
            .section {
                padding: 48px 0;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .sports-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .hot-events-grid {
                grid-template-columns: 1fr;
            }
            .hot-event-card {
                flex-direction: column;
            }
            .hot-event-thumb {
                width: 100%;
                height: 160px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item {
                padding: 24px 16px;
            }
            .stat-number {
                font-size: 1.8rem;
            }
            .news-item {
                flex-direction: column;
                padding: 16px;
            }
            .news-item .news-icon {
                width: 36px;
                height: 36px;
                font-size: 0.95rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .btn-group {
                flex-direction: column;
                align-items: center;
            }
            .btn {
                width: 100%;
                max-width: 300px;
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 1.6rem;
            }
            .hero-stats {
                flex-direction: column;
                gap: 12px;
            }
            .hero-stat-number {
                font-size: 1.4rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-number {
                font-size: 1.5rem;
            }
            .section-header h2 {
                font-size: 1.35rem;
            }
            .sport-card-image {
                height: 140px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.93rem;
            }
            .faq-answer {
                font-size: 0.88rem;
            }
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 工具类 ===== */
        .text-primary {
            color: var(--primary);
        }
        .mt-8 {
            margin-top: 8px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }