/* roulang page: index */
/* ============ 设计变量 ============ */
        :root {
            --bg-primary: #0D0F14;
            --bg-card: #161A22;
            --bg-card-alt: #1C2230;
            --bg-nav: #0A0C10;
            --bg-input: #0D0F14;
            --text-primary: #F2F5F9;
            --text-secondary: #A7B0BE;
            --text-on-accent: #0A0C10;
            --accent-cyan: #22D3EE;
            --accent-cyan-bright: #3EE0F5;
            --accent-green: #A3E635;
            --accent-orange: #FB923C;
            --alert-red: #FF5C5C;
            --border-color: #2B3240;
            --border-hover: #22D3EE;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 10px;
            --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 6px 20px rgba(34, 211, 238, 0.18);
            --shadow-cta: 0 8px 30px rgba(163, 230, 53, 0.15);
            --transition-base: 0.25s ease;
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", system-ui, sans-serif;
            --font-num: "DIN Alternate", "Bebas Neue", "Arial Black", "Arial", sans-serif;
            --nav-width: 240px;
            --header-height-mobile: 60px;
            --section-padding: 88px;
            --section-padding-mobile: 56px;
        }

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

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

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color var(--transition-base);
        }

        a:hover,
        a:focus {
            color: var(--accent-cyan-bright);
            outline: none;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
        }

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

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

        h1 {
            font-size: 38px;
            letter-spacing: -0.01em;
        }

        h2 {
            font-size: 28px;
            letter-spacing: -0.005em;
        }

        h3 {
            font-size: 19px;
            font-weight: 600;
            letter-spacing: 0;
        }

        p {
            margin: 0;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ============ 容器 ============ */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .main-content {
            margin-left: var(--nav-width);
            min-height: 100vh;
            background-color: var(--bg-primary);
        }

        /* ============ 左侧导航 ============ */
        .app-shell {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background-color: var(--bg-nav);
            border-right: 1px solid var(--border-color);
            z-index: 100;
            display: flex;
            flex-direction: column;
            transition: transform var(--transition-smooth);
        }

        .app-shell .nav-logo {
            padding: 24px 20px;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--accent-cyan);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-on-accent);
            font-weight: 800;
            font-size: 18px;
            flex-shrink: 0;
        }

        .nav-logo .logo-text {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .nav-logo .logo-text span {
            color: var(--accent-cyan);
        }

        .nav-menu {
            flex: 1;
            padding: 16px 10px;
            overflow-y: auto;
        }

        .nav-menu .nav-label {
            font-size: 12px;
            color: var(--text-secondary);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            padding: 0 10px 10px;
            opacity: 0.6;
        }

        .nav-menu a.nav-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 14px;
            margin-bottom: 4px;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            position: relative;
            transition: all var(--transition-base);
            font-size: 15px;
            font-weight: 500;
            letter-spacing: 0.01em;
        }

        .nav-menu a.nav-link i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            flex-shrink: 0;
        }

        .nav-menu a.nav-link::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 0;
            background-color: var(--accent-cyan);
            border-radius: 0 3px 3px 0;
            transition: height var(--transition-base);
        }

        .nav-menu a.nav-link:hover {
            color: var(--text-primary);
            background-color: rgba(34, 211, 238, 0.06);
        }

        .nav-menu a.nav-link.active {
            color: var(--accent-cyan);
            background-color: rgba(34, 211, 238, 0.08);
        }

        .nav-menu a.nav-link.active::before {
            height: 60%;
        }

        .nav-footer {
            padding: 16px 20px;
            border-top: 1px solid var(--border-color);
            flex-shrink: 0;
        }

        .nav-footer p {
            font-size: 12px;
            color: var(--text-secondary);
            opacity: 0.7;
            line-height: 1.6;
        }

        .nav-footer a {
            font-size: 12px;
            color: var(--accent-cyan);
        }

        /* ============ 移动端顶部栏 ============ */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-height-mobile);
            background-color: var(--bg-nav);
            border-bottom: 1px solid var(--border-color);
            z-index: 99;
            align-items: center;
            padding: 0 16px;
            justify-content: space-between;
        }

        .mobile-header .hamburger {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-primary);
            font-size: 22px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-base);
        }

        .mobile-header .hamburger:hover {
            background-color: rgba(34, 211, 238, 0.1);
            color: var(--accent-cyan);
        }

        .mobile-header .mobile-logo {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .mobile-header .mobile-logo span {
            color: var(--accent-cyan);
        }

        .mobile-header .mobile-logo .logo-icon-sm {
            width: 28px;
            height: 28px;
            background: var(--accent-cyan);
            border-radius: 4px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-on-accent);
            font-weight: 800;
            font-size: 14px;
        }

        .drawer-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 98;
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }

        .drawer-overlay.show {
            opacity: 1;
        }

        /* ============ Section 通用 ============ */
        .section {
            padding-top: var(--section-padding);
            padding-bottom: var(--section-padding);
            border-bottom: 1px solid rgba(43, 50, 64, 0.5);
        }

        .section:last-child {
            border-bottom: none;
        }

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

        .section-header .section-tag {
            display: inline-block;
            padding: 5px 14px;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent-cyan);
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.25);
            border-radius: 20px;
            letter-spacing: 0.04em;
            margin-bottom: 12px;
            text-transform: uppercase;
        }

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

        .section-header .section-sub {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 720px;
        }

        /* ============ Hero + 数据看板 ============ */
        .hero-area {
            position: relative;
            min-height: 440px;
            display: flex;
            align-items: flex-end;
            padding: 60px 0 40px;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
        }

        .hero-area::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(13, 15, 20, 0.55) 0%, rgba(13, 15, 20, 0.75) 60%, rgba(13, 15, 20, 0.95) 100%);
            z-index: 1;
        }

        .hero-area .hero-content {
            position: relative;
            z-index: 2;
            width: 100%;
        }

        .hero-content .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 500;
            color: var(--accent-green);
            background: rgba(163, 230, 53, 0.12);
            border: 1px solid rgba(163, 230, 53, 0.3);
            border-radius: 20px;
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }

        .hero-content h1 {
            font-size: 42px;
            margin-bottom: 14px;
            letter-spacing: -0.015em;
        }

        .hero-content h1 .highlight {
            color: var(--accent-cyan);
            position: relative;
        }

        .hero-content .hero-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 28px;
        }

        /* 数据看板卡片 */
        .dashboard-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 14px;
        }

        .metric-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 18px 16px;
            position: relative;
            transition: all var(--transition-base);
        }

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

        .metric-card .metric-value {
            font-family: var(--font-num);
            font-size: 34px;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.2;
            letter-spacing: -0.01em;
            display: flex;
            align-items: baseline;
            gap: 6px;
        }

        .metric-card .metric-value .unit {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-secondary);
            letter-spacing: 0;
        }

        .metric-card .metric-name {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 6px;
            letter-spacing: 0.02em;
        }

        .metric-card .trend {
            position: absolute;
            top: 16px;
            right: 14px;
            font-size: 12px;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 3px;
        }

        .trend.up {
            color: var(--accent-green);
        }

        .trend.down {
            color: var(--alert-red);
        }

        /* ============ 卡片网格 ============ */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }

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

        .card-grid.three-col {
            grid-template-columns: repeat(3, 1fr);
        }

        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .service-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .service-card .card-image {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            background-color: var(--bg-card-alt);
        }

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

        .service-card .card-body h3 {
            margin-bottom: 8px;
            font-size: 18px;
        }

        .service-card .card-body p {
            font-size: 14px;
            line-height: 1.7;
            flex: 1;
            margin-bottom: 14px;
        }

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

        .service-card .card-link:hover {
            color: var(--accent-cyan-bright);
            gap: 10px;
        }

        /* ============ 按钮 ============ */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            transition: all var(--transition-base);
            letter-spacing: 0.02em;
            text-align: center;
            justify-content: center;
            cursor: pointer;
        }

        .btn-primary {
            background: var(--accent-cyan);
            color: var(--text-on-accent);
            box-shadow: 0 2px 10px rgba(34, 211, 238, 0.25);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--accent-cyan-bright);
            color: var(--text-on-accent);
            box-shadow: 0 4px 20px rgba(34, 211, 238, 0.4);
            transform: translateY(-1px);
        }

        .btn-secondary {
            background: transparent;
            color: var(--accent-cyan);
            border: 1.5px solid var(--accent-cyan);
        }

        .btn-secondary:hover,
        .btn-secondary:focus {
            background: rgba(34, 211, 238, 0.1);
            color: var(--accent-cyan-bright);
            border-color: var(--accent-cyan-bright);
        }

        .btn-cta {
            background: var(--accent-green);
            color: #0A0C10;
            box-shadow: var(--shadow-cta);
            font-size: 16px;
            padding: 14px 34px;
        }

        .btn-cta:hover,
        .btn-cta:focus {
            background: #B8F052;
            color: #0A0C10;
            box-shadow: 0 6px 26px rgba(163, 230, 53, 0.3);
            transform: translateY(-1px);
        }

        /* ============ 对比模块 ============ */
        .compare-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .compare-col {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: border-color var(--transition-base);
        }

        .compare-col:hover {
            border-color: var(--border-hover);
        }

        .compare-col h3 {
            font-size: 17px;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border-color);
        }

        .compare-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 0;
            border-bottom: 1px solid rgba(43, 50, 64, 0.5);
        }

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

        .compare-row .compare-label {
            font-size: 14px;
            color: var(--text-secondary);
        }

        .compare-row .compare-bar-wrap {
            flex: 1;
            margin: 0 14px;
            height: 6px;
            background: rgba(43, 50, 64, 0.6);
            border-radius: 3px;
            overflow: hidden;
        }

        .compare-row .compare-bar {
            height: 100%;
            border-radius: 3px;
            transition: width 1s ease;
        }

        .compare-row .compare-bar.cyan {
            background: var(--accent-cyan);
        }

        .compare-row .compare-bar.green {
            background: var(--accent-green);
        }

        .compare-row .compare-bar.orange {
            background: var(--accent-orange);
        }

        .compare-row .compare-value {
            font-family: var(--font-num);
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            min-width: 56px;
            text-align: right;
        }

        /* ============ 里程碑时间线 ============ */
        .milestone-timeline {
            display: flex;
            position: relative;
            gap: 0;
            padding: 10px 0 6px;
            overflow-x: auto;
        }

        .milestone-timeline::before {
            content: '';
            position: absolute;
            top: 26px;
            left: 24px;
            right: 24px;
            height: 2px;
            background: rgba(34, 211, 238, 0.3);
            z-index: 0;
        }

        .milestone-item {
            flex: 1;
            min-width: 160px;
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 0 12px;
        }

        .milestone-item .node {
            width: 16px;
            height: 16px;
            background: var(--accent-cyan);
            border: 3px solid var(--bg-primary);
            border-radius: 50%;
            margin: 0 auto 12px;
            box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.25);
            position: relative;
            z-index: 1;
        }

        .milestone-item .milestone-date {
            font-family: var(--font-num);
            font-size: 14px;
            font-weight: 700;
            color: var(--accent-cyan);
            letter-spacing: 0.04em;
            margin-bottom: 4px;
        }

        .milestone-item .milestone-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .milestone-item .milestone-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ============ 资讯列表 ============ */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .news-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 18px 0;
            border-bottom: 1px solid var(--border-color);
            transition: background var(--transition-base);
            border-radius: 0;
        }

        .news-item:last-child {
            border-bottom: none;
        }

        .news-item:hover {
            background: rgba(22, 26, 34, 0.5);
        }

        .news-item .news-date {
            font-family: var(--font-num);
            font-size: 13px;
            font-weight: 600;
            color: var(--accent-cyan);
            min-width: 72px;
            padding-top: 2px;
            letter-spacing: 0.03em;
        }

        .news-item .news-content {
            flex: 1;
        }

        .news-item .news-content h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 4px;
        }

        .news-item .news-content h3 a {
            color: var(--text-primary);
            transition: color var(--transition-base);
        }

        .news-item .news-content h3 a:hover {
            color: var(--accent-cyan);
        }

        .news-item .news-content p {
            font-size: 14px;
            line-height: 1.7;
        }

        /* ============ 保障卡片 ============ */
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .guarantee-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 22px;
            text-align: center;
            transition: all var(--transition-base);
        }

        .guarantee-item:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
        }

        .guarantee-item .guarantee-icon {
            width: 52px;
            height: 52px;
            margin: 0 auto 14px;
            background: rgba(34, 211, 238, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--accent-cyan);
        }

        .guarantee-item h3 {
            font-size: 16px;
            margin-bottom: 6px;
        }

        .guarantee-item p {
            font-size: 13px;
            line-height: 1.7;
        }

        /* ============ 快速解答 ============ */
        .quick-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 14px;
        }

        .quick-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            transition: all var(--transition-base);
        }

        .quick-item:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card);
        }

        .quick-item .quick-q {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .quick-item .quick-q::before {
            content: 'Q';
            font-family: var(--font-num);
            font-size: 14px;
            font-weight: 800;
            color: var(--accent-cyan);
            background: rgba(34, 211, 238, 0.1);
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 4px;
            flex-shrink: 0;
        }

        .quick-item p {
            font-size: 14px;
            line-height: 1.7;
            padding-left: 32px;
        }

        /* ============ FAQ 手风琴 ============ */
        .faq-accordion {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
        }

        .faq-accordion .accordion-item {
            border-bottom: 1px solid var(--border-color);
        }

        .faq-accordion .accordion-item:last-child {
            border-bottom: none;
        }

        .faq-accordion .accordion-title {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            transition: all var(--transition-base);
            cursor: pointer;
            width: 100%;
            text-align: left;
        }

        .faq-accordion .accordion-title:hover {
            background: rgba(34, 211, 238, 0.05);
            color: var(--accent-cyan);
        }

        .faq-accordion .accordion-title .faq-icon {
            font-size: 14px;
            color: var(--accent-cyan);
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }

        .faq-accordion .accordion-item.is-active .accordion-title .faq-icon {
            transform: rotate(45deg);
        }

        .faq-accordion .accordion-content {
            padding: 0 22px 18px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ============ 表单 ============ */
        .subscribe-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 32px;
            display: flex;
            align-items: center;
            gap: 28px;
            flex-wrap: wrap;
        }

        .subscribe-card .subscribe-info {
            flex: 1;
            min-width: 260px;
        }

        .subscribe-card .subscribe-info h3 {
            font-size: 20px;
            margin-bottom: 6px;
        }

        .subscribe-card .subscribe-info p {
            font-size: 14px;
        }

        .subscribe-form {
            flex: 1;
            min-width: 260px;
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .subscribe-form input {
            flex: 1;
            min-width: 180px;
            padding: 12px 16px;
            font-size: 14px;
            color: var(--text-primary);
            background: var(--bg-input);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            transition: all var(--transition-base);
        }

        .subscribe-form input::placeholder {
            color: rgba(167, 176, 190, 0.6);
        }

        .subscribe-form input:focus {
            outline: none;
            border-color: var(--accent-cyan);
            box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.12);
        }

        .subscribe-form .form-hint {
            font-size: 12px;
            color: var(--text-secondary);
            opacity: 0.7;
            padding-top: 4px;
            width: 100%;
        }

        /* ============ 品牌介绍 ============ */
        .brand-intro {
            display: flex;
            gap: 36px;
            align-items: center;
            flex-wrap: wrap;
        }

        .brand-intro .brand-text {
            flex: 1;
            min-width: 280px;
        }

        .brand-intro .brand-text p {
            font-size: 15px;
            line-height: 1.85;
            margin-bottom: 14px;
        }

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

        .brand-intro .brand-image {
            flex: 0 0 340px;
            max-width: 340px;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
        }

        .brand-intro .brand-image img {
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
        }

        /* ============ 热门项目横滑轨 ============ */
        .game-track {
            display: flex;
            gap: 14px;
            overflow-x: auto;
            padding-bottom: 12px;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
        }

        .game-track::-webkit-scrollbar {
            height: 4px;
        }

        .game-track::-webkit-scrollbar-track {
            background: var(--border-color);
            border-radius: 2px;
        }

        .game-track::-webkit-scrollbar-thumb {
            background: rgba(34, 211, 238, 0.4);
            border-radius: 2px;
        }

        .game-card {
            flex: 0 0 220px;
            scroll-snap-align: start;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .game-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .game-card .game-image {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            background-color: var(--bg-card-alt);
        }

        .game-card .game-body {
            padding: 14px 16px 16px;
        }

        .game-card .game-body h3 {
            font-size: 15px;
            margin-bottom: 4px;
        }

        .game-card .game-body .game-tag {
            display: inline-block;
            padding: 3px 10px;
            font-size: 11px;
            font-weight: 600;
            color: var(--accent-green);
            background: rgba(163, 230, 53, 0.1);
            border-radius: 12px;
            margin-bottom: 6px;
        }

        .game-card .game-body p {
            font-size: 13px;
            line-height: 1.6;
        }

        /* ============ 赛事日历 ============ */
        .calendar-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            border-left: 2px solid rgba(34, 211, 238, 0.3);
            padding-left: 0;
        }

        .calendar-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 16px 0 16px 20px;
            position: relative;
            border-bottom: 1px solid var(--border-color);
        }

        .calendar-item:last-child {
            border-bottom: none;
        }

        .calendar-item::before {
            content: '';
            position: absolute;
            left: -7px;
            top: 22px;
            width: 12px;
            height: 12px;
            background: var(--accent-cyan);
            border-radius: 50%;
            border: 2px solid var(--bg-primary);
        }

        .calendar-item .cal-date {
            font-family: var(--font-num);
            font-size: 14px;
            font-weight: 700;
            color: var(--accent-cyan);
            min-width: 76px;
            letter-spacing: 0.03em;
        }

        .calendar-item .cal-info h3 {
            font-size: 15px;
            margin-bottom: 4px;
        }

        .calendar-item .cal-info p {
            font-size: 13px;
        }

        .calendar-item .cal-status {
            margin-left: auto;
            flex-shrink: 0;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 12px;
            letter-spacing: 0.03em;
        }

        .cal-status.upcoming {
            color: var(--accent-orange);
            background: rgba(251, 146, 60, 0.1);
            border: 1px solid rgba(251, 146, 60, 0.25);
        }

        .cal-status.ongoing {
            color: var(--accent-green);
            background: rgba(163, 230, 53, 0.1);
            border: 1px solid rgba(163, 230, 53, 0.25);
        }

        /* ============ 合作方 ============ */
        .partner-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 14px;
        }

        .partner-item {
            aspect-ratio: 16/8;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            letter-spacing: 0.04em;
            transition: all var(--transition-base);
        }

        .partner-item:hover {
            border-color: var(--border-hover);
            background: rgba(34, 211, 238, 0.06);
            color: var(--accent-cyan);
        }

        /* ============ CTA 横幅 ============ */
        .cta-banner {
            background: linear-gradient(135deg, rgba(34, 211, 238, 0.14) 0%, rgba(163, 230, 53, 0.08) 100%);
            border: 1px solid rgba(34, 211, 238, 0.3);
            border-radius: var(--radius-lg);
            padding: 40px 32px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -20%;
            width: 200px;
            height: 200px;
            background: rgba(34, 211, 238, 0.08);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-banner::after {
            content: '';
            position: absolute;
            bottom: -40%;
            right: -10%;
            width: 240px;
            height: 240px;
            background: rgba(163, 230, 53, 0.06);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-banner h2 {
            font-size: 28px;
            margin-bottom: 10px;
            position: relative;
            z-index: 1;
        }

        .cta-banner p {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto 22px;
            position: relative;
            z-index: 1;
        }

        .cta-banner .btn-cta {
            position: relative;
            z-index: 1;
        }

        /* ============ 页脚 ============ */
        .site-footer {
            background: var(--bg-nav);
            border-top: 1px solid var(--border-color);
            padding: 48px 0 0;
            margin-left: var(--nav-width);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid var(--border-color);
        }

        .footer-brand .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-brand .footer-logo span {
            color: var(--accent-cyan);
        }

        .footer-brand .footer-logo .logo-icon-sm {
            width: 28px;
            height: 28px;
            background: var(--accent-cyan);
            border-radius: 4px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--text-on-accent);
            font-weight: 800;
            font-size: 14px;
        }

        .footer-brand p {
            font-size: 13px;
            line-height: 1.8;
            max-width: 420px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 14px;
        }

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

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

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

        .footer-col p {
            font-size: 13px;
            line-height: 1.7;
        }

        .footer-col .footer-rss {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            color: var(--accent-cyan);
            margin-top: 8px;
        }

        .footer-bottom {
            padding: 18px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 12px;
            color: var(--text-secondary);
        }

        .footer-bottom .copyright {
            opacity: 0.8;
        }

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

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

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

        /* ============ 响应式 ============ */
        @media (max-width: 1100px) {
            .dashboard-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .partner-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 1024px) {
            .app-shell {
                transform: translateX(-100%);
                box-shadow: none;
            }
            .app-shell.open {
                transform: translateX(0);
                box-shadow: 4px 0 30px rgba(0, 0, 0, 0.5);
            }
            .mobile-header {
                display: flex;
            }
            .main-content {
                margin-left: 0;
                padding-top: var(--header-height-mobile);
            }
            .site-footer {
                margin-left: 0;
            }
            .drawer-overlay {
                display: block;
                pointer-events: none;
            }
            .drawer-overlay.show {
                pointer-events: auto;
            }
            .hero-area {
                min-height: 380px;
                padding-top: 52px;
            }
            .hero-content h1 {
                font-size: 34px;
            }
            .section {
                padding-top: var(--section-padding-mobile);
                padding-bottom: var(--section-padding-mobile);
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-padding-mobile: 44px;
            }
            h1 {
                font-size: 30px;
            }
            h2 {
                font-size: 23px;
            }
            .hero-content h1 {
                font-size: 28px;
            }
            .hero-content .hero-desc {
                font-size: 14px;
            }
            .dashboard-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .metric-card .metric-value {
                font-size: 26px;
            }
            .card-grid,
            .card-grid.two-col,
            .card-grid.three-col {
                grid-template-columns: 1fr;
            }
            .compare-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .milestone-timeline {
                flex-direction: column;
                gap: 0;
                padding: 0;
            }
            .milestone-timeline::before {
                top: 8px;
                bottom: 8px;
                left: 7px;
                right: auto;
                width: 2px;
                height: auto;
            }
            .milestone-item {
                text-align: left;
                padding: 10px 0 10px 24px;
                min-width: 0;
                flex: none;
            }
            .milestone-item .node {
                position: absolute;
                left: 0;
                top: 16px;
                margin: 0;
            }
            .milestone-item .milestone-date {
                margin-bottom: 2px;
            }
            .news-item {
                flex-direction: column;
                gap: 6px;
                padding: 14px 0;
            }
            .news-item .news-date {
                min-width: auto;
            }
            .guarantee-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .quick-list {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .subscribe-card {
                flex-direction: column;
                align-items: stretch;
                padding: 22px;
                gap: 18px;
            }
            .subscribe-form {
                flex-direction: column;
                gap: 10px;
            }
            .subscribe-form input {
                min-width: 0;
                width: 100%;
            }
            .brand-intro {
                flex-direction: column;
                gap: 20px;
            }
            .brand-intro .brand-image {
                flex: none;
                width: 100%;
                max-width: 100%;
            }
            .game-card {
                flex: 0 0 180px;
            }
            .calendar-item {
                flex-wrap: wrap;
                gap: 6px;
            }
            .calendar-item .cal-date {
                min-width: auto;
            }
            .calendar-item .cal-status {
                margin-left: 0;
            }
            .partner-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .cta-banner {
                padding: 28px 18px;
            }
            .cta-banner h2 {
                font-size: 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 22px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

        @media (max-width: 520px) {
            .dashboard-grid {
                grid-template-columns: 1fr 1fr;
            }
            .metric-card {
                padding: 12px 12px;
            }
            .metric-card .metric-value {
                font-size: 22px;
            }
            .metric-card .metric-name {
                font-size: 11px;
            }
            .metric-card .trend {
                top: 10px;
                right: 10px;
                font-size: 10px;
            }
            .hero-area {
                min-height: 340px;
            }
            .hero-content h1 {
                font-size: 24px;
            }
            .section-header h2 {
                font-size: 20px;
            }
            .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
            .btn-cta {
                font-size: 15px;
                padding: 12px 26px;
            }
            .cta-banner h2 {
                font-size: 20px;
            }
            .partner-item {
                font-size: 12px;
                aspect-ratio: 16/7;
            }
        }

/* roulang page: category1 */
:root {
        --bg-primary: #0D0F14;
        --bg-card: #161A22;
        --bg-card-alt: #1C2230;
        --bg-nav: #0A0C10;
        --bg-input: #0D0F14;
        --text-primary: #F2F5F9;
        --text-secondary: #A7B0BE;
        --text-on-accent: #0A0C10;
        --accent-cyan: #22D3EE;
        --accent-cyan-bright: #3EE0F5;
        --accent-green: #A3E635;
        --accent-orange: #FB923C;
        --alert-red: #FF5C5C;
        --border-color: #2B3240;
        --border-hover: #22D3EE;
        --radius-sm: 6px;
        --radius-md: 8px;
        --radius-lg: 10px;
        --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.35);
        --shadow-card-hover: 0 6px 20px rgba(34, 211, 238, 0.18);
        --shadow-cta: 0 8px 30px rgba(163, 230, 53, 0.15);
        --transition-base: 0.25s ease;
        --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", system-ui, sans-serif;
        --font-num: "DIN Alternate", "Bebas Neue", "Arial Black", "Arial", sans-serif;
        --nav-width: 240px;
        --header-height-mobile: 60px;
        --section-padding: 88px;
        --section-padding-mobile: 44px;
    }

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

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

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

    img {
        max-width: 100%;
        height: auto;
        display: block;
        border: 0;
    }

    a {
        color: var(--accent-cyan);
        text-decoration: none;
        transition: color var(--transition-base);
    }

    a:hover,
    a:focus {
        color: var(--accent-cyan-bright);
        outline: none;
    }

    a:focus-visible,
    button:focus-visible,
    input:focus-visible {
        outline: 2px solid var(--accent-cyan);
        outline-offset: 2px;
    }

    button,
    input {
        font-family: inherit;
        font-size: inherit;
        line-height: inherit;
    }

    button {
        cursor: pointer;
        border: none;
        background: none;
    }

    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding-left: 20px;
        padding-right: 20px;
    }

    /* ============ App Shell 导航 ============ */
    .app-shell {
        display: flex;
        min-height: 100vh;
    }

    .nav-sidebar {
        position: fixed;
        top: 0;
        left: 0;
        width: var(--nav-width);
        height: 100vh;
        background-color: var(--bg-nav);
        border-right: 1px solid var(--border-color);
        display: flex;
        flex-direction: column;
        z-index: 100;
        flex-shrink: 0;
    }

    .nav-logo {
        padding: 24px 20px;
        border-bottom: 1px solid var(--border-color);
        display: flex;
        align-items: center;
        gap: 10px;
        flex-shrink: 0;
    }

    .nav-logo .logo-icon {
        width: 36px;
        height: 36px;
        background: var(--accent-cyan);
        border-radius: var(--radius-sm);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--text-on-accent);
        font-weight: 800;
        font-size: 18px;
        flex-shrink: 0;
    }

    .nav-logo .logo-text {
        font-size: 19px;
        font-weight: 700;
        color: var(--text-primary);
        letter-spacing: 0.02em;
        white-space: nowrap;
    }

    .nav-logo .logo-text span {
        color: var(--accent-cyan);
    }

    .nav-menu {
        flex: 1;
        padding: 16px 10px;
        overflow-y: auto;
    }

    .nav-menu .nav-label {
        font-size: 12px;
        color: var(--text-secondary);
        text-transform: uppercase;
        letter-spacing: 0.08em;
        padding: 0 10px 10px;
        opacity: 0.6;
    }

    .nav-menu a.nav-link {
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 12px 14px;
        margin-bottom: 4px;
        color: var(--text-secondary);
        border-radius: var(--radius-sm);
        position: relative;
        transition: all var(--transition-base);
        font-size: 15px;
        font-weight: 500;
        letter-spacing: 0.01em;
    }

    .nav-menu a.nav-link i {
        width: 20px;
        text-align: center;
        font-size: 16px;
        flex-shrink: 0;
    }

    .nav-menu a.nav-link::before {
        content: '';
        position: absolute;
        left: 0;
        top: 50%;
        transform: translateY(-50%);
        width: 3px;
        height: 0;
        background-color: var(--accent-cyan);
        border-radius: 0 3px 3px 0;
        transition: height var(--transition-base);
    }

    .nav-menu a.nav-link:hover {
        color: var(--text-primary);
        background-color: rgba(34, 211, 238, 0.06);
    }

    .nav-menu a.nav-link.active {
        color: var(--accent-cyan);
        background-color: rgba(34, 211, 238, 0.08);
    }

    .nav-menu a.nav-link.active::before {
        height: 60%;
    }

    .nav-footer {
        padding: 16px 20px;
        border-top: 1px solid var(--border-color);
        flex-shrink: 0;
    }

    .nav-footer .nav-footer-text {
        font-size: 12px;
        color: var(--text-secondary);
        opacity: 0.6;
        display: flex;
        align-items: center;
        gap: 6px;
    }

    .nav-footer .nav-footer-text i {
        font-size: 13px;
    }

    .main-content {
        margin-left: var(--nav-width);
        flex: 1;
        min-height: 100vh;
        background-color: var(--bg-primary);
    }

    /* ============ 移动端顶部栏 ============ */
    .mobile-header {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        height: var(--header-height-mobile);
        background-color: var(--bg-nav);
        border-bottom: 1px solid var(--border-color);
        z-index: 99;
        align-items: center;
        padding: 0 16px;
        justify-content: space-between;
    }

    .mobile-header .mobile-logo {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 17px;
        font-weight: 700;
        color: var(--text-primary);
    }

    .mobile-header .mobile-logo .logo-icon-sm {
        width: 28px;
        height: 28px;
        background: var(--accent-cyan);
        border-radius: var(--radius-sm);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--text-on-accent);
        font-weight: 800;
        font-size: 14px;
    }

    .mobile-header .mobile-logo span {
        color: var(--accent-cyan);
    }

    .hamburger-btn {
        width: 40px;
        height: 40px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--text-primary);
        font-size: 20px;
        border-radius: var(--radius-sm);
        transition: background var(--transition-base);
    }

    .hamburger-btn:hover {
        background: rgba(34, 211, 238, 0.08);
        color: var(--accent-cyan);
    }

    .drawer-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.65);
        z-index: 98;
        opacity: 0;
        transition: opacity var(--transition-smooth);
    }

    .drawer-overlay.open {
        opacity: 1;
    }

    /* ============ 通用板块样式 ============ */
    .section {
        padding: var(--section-padding) 0;
    }

    .section-alt {
        background-color: var(--bg-card);
        border-top: 1px solid var(--border-color);
        border-bottom: 1px solid var(--border-color);
    }

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

    .section-header h2 {
        font-size: 28px;
        font-weight: 700;
        line-height: 1.35;
        color: var(--text-primary);
        margin-bottom: 10px;
        letter-spacing: -0.01em;
    }

    .section-header p {
        font-size: 16px;
        color: var(--text-secondary);
        max-width: 720px;
        line-height: 1.75;
    }

    .section-header .section-tag {
        display: inline-block;
        font-size: 12px;
        font-weight: 600;
        color: var(--accent-cyan);
        letter-spacing: 0.06em;
        text-transform: uppercase;
        margin-bottom: 8px;
    }

    /* ============ 面包屑 ============ */
    .breadcrumb-section {
        padding: 28px 0 0;
    }

    .breadcrumb {
        font-size: 14px;
        color: var(--text-secondary);
        display: flex;
        align-items: center;
        gap: 8px;
        flex-wrap: wrap;
    }

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

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

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

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

    /* ============ 分类页头部 ============ */
    .category-header {
        padding: 40px 0 24px;
    }

    .category-header h1 {
        font-size: 38px;
        font-weight: 700;
        line-height: 1.25;
        color: var(--text-primary);
        margin-bottom: 14px;
        letter-spacing: -0.02em;
    }

    .category-header .category-desc {
        font-size: 17px;
        color: var(--text-secondary);
        max-width: 760px;
        line-height: 1.8;
    }

    /* ============ 筛选标签 ============ */
    .filter-row {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        margin-bottom: 28px;
        align-items: center;
    }

    .filter-label {
        font-size: 14px;
        color: var(--text-secondary);
        margin-right: 6px;
        font-weight: 500;
    }

    .filter-tag {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 8px 16px;
        border: 1px solid var(--border-color);
        border-radius: var(--radius-sm);
        font-size: 14px;
        font-weight: 500;
        color: var(--text-secondary);
        background: transparent;
        cursor: pointer;
        transition: all var(--transition-base);
        white-space: nowrap;
    }

    .filter-tag:hover {
        border-color: var(--border-hover);
        color: var(--accent-cyan);
        background: rgba(34, 211, 238, 0.06);
    }

    .filter-tag.active {
        background: var(--accent-cyan);
        color: var(--text-on-accent);
        border-color: var(--accent-cyan);
        font-weight: 600;
    }

    .filter-tag .filter-count {
        font-size: 12px;
        opacity: 0.7;
        font-weight: 400;
    }

    /* ============ 列表卡片 ============ */
    .tournament-list {
        display: flex;
        flex-direction: column;
        gap: 16px;
    }

    .tournament-item {
        display: flex;
        background: var(--bg-card);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        overflow: hidden;
        transition: all var(--transition-base);
        box-shadow: var(--shadow-card);
    }

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

    .tournament-item .item-thumb {
        width: 180px;
        min-height: 120px;
        flex-shrink: 0;
        overflow: hidden;
        position: relative;
    }

    .tournament-item .item-thumb img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .tournament-item .item-body {
        padding: 18px 22px;
        flex: 1;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }

    .tournament-item .item-date {
        font-size: 13px;
        color: var(--accent-orange);
        font-weight: 500;
        letter-spacing: 0.03em;
        margin-bottom: 6px;
    }

    .tournament-item .item-title {
        font-size: 18px;
        font-weight: 600;
        color: var(--text-primary);
        line-height: 1.45;
        margin-bottom: 8px;
    }

    .tournament-item .item-title a {
        color: var(--text-primary);
        transition: color var(--transition-base);
    }

    .tournament-item .item-title a:hover {
        color: var(--accent-cyan);
    }

    .tournament-item .item-summary {
        font-size: 14px;
        color: var(--text-secondary);
        line-height: 1.7;
        margin-bottom: 10px;
    }

    .tournament-item .item-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 6px;
    }

    .tag-badge {
        display: inline-block;
        padding: 3px 10px;
        border-radius: 4px;
        font-size: 12px;
        font-weight: 500;
        letter-spacing: 0.02em;
        background: rgba(34, 211, 238, 0.1);
        color: var(--accent-cyan);
    }

    .tag-badge.green {
        background: rgba(163, 230, 53, 0.1);
        color: var(--accent-green);
    }

    .tag-badge.orange {
        background: rgba(251, 146, 60, 0.12);
        color: var(--accent-orange);
    }

    .tag-badge.red {
        background: rgba(255, 92, 92, 0.12);
        color: var(--alert-red);
    }

    /* ============ 查看更多按钮 ============ */
    .view-more-wrap {
        text-align: center;
        margin-top: 28px;
    }

    .btn-view-more {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 12px 28px;
        border: 1px solid var(--border-color);
        border-radius: var(--radius-sm);
        font-size: 15px;
        font-weight: 600;
        color: var(--text-primary);
        background: transparent;
        transition: all var(--transition-base);
    }

    .btn-view-more:hover {
        border-color: var(--accent-cyan);
        color: var(--accent-cyan);
        background: rgba(34, 211, 238, 0.05);
    }

    /* ============ 热门赛事数据卡片 ============ */
    .hot-data-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }

    .hot-data-card {
        background: var(--bg-card);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        padding: 22px;
        transition: all var(--transition-base);
        box-shadow: var(--shadow-card);
    }

    .hot-data-card:hover {
        border-color: var(--border-hover);
        box-shadow: var(--shadow-card-hover);
        transform: translateY(-2px);
    }

    .hot-data-card .hot-data-label {
        font-size: 13px;
        color: var(--text-secondary);
        margin-bottom: 8px;
        letter-spacing: 0.03em;
    }

    .hot-data-card .hot-data-value {
        font-family: var(--font-num);
        font-size: 34px;
        font-weight: 700;
        color: var(--accent-cyan);
        line-height: 1.2;
        margin-bottom: 6px;
    }

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

    .hot-data-card .hot-data-change.up {
        color: var(--accent-green);
    }

    .hot-data-card .hot-data-change.down {
        color: var(--alert-red);
    }

    /* ============ 专题入口卡片 ============ */
    .topics-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .topic-card {
        background: var(--bg-card-alt);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        padding: 28px;
        transition: all var(--transition-base);
        box-shadow: var(--shadow-card);
        position: relative;
        overflow: hidden;
    }

    .topic-card::after {
        content: '';
        position: absolute;
        top: 0;
        right: 0;
        width: 120px;
        height: 120px;
        background: radial-gradient(circle, rgba(34, 211, 238, 0.08) 0%, transparent 70%);
        border-radius: 50%;
        pointer-events: none;
    }

    .topic-card:hover {
        border-color: var(--border-hover);
        box-shadow: var(--shadow-card-hover);
        transform: translateY(-2px);
    }

    .topic-card .topic-icon {
        width: 44px;
        height: 44px;
        background: rgba(34, 211, 238, 0.12);
        border-radius: var(--radius-sm);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--accent-cyan);
        font-size: 20px;
        margin-bottom: 16px;
    }

    .topic-card h3 {
        font-size: 20px;
        font-weight: 600;
        color: var(--text-primary);
        margin-bottom: 10px;
        line-height: 1.4;
    }

    .topic-card p {
        font-size: 14px;
        color: var(--text-secondary);
        line-height: 1.7;
        margin-bottom: 16px;
    }

    .topic-card .topic-link {
        font-size: 14px;
        font-weight: 500;
        color: var(--accent-cyan);
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }

    /* ============ CTA 订阅区 ============ */
    .cta-inline-card {
        background: var(--bg-card-alt);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-lg);
        padding: 36px 32px;
        display: flex;
        align-items: center;
        gap: 28px;
        flex-wrap: wrap;
        box-shadow: var(--shadow-card);
    }

    .cta-inline-card .cta-text {
        flex: 1;
        min-width: 240px;
    }

    .cta-inline-card .cta-text h3 {
        font-size: 22px;
        font-weight: 700;
        color: var(--text-primary);
        margin-bottom: 8px;
    }

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

    .btn-primary {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 13px 30px;
        background: var(--accent-cyan);
        color: var(--text-on-accent);
        border-radius: var(--radius-sm);
        font-size: 15px;
        font-weight: 600;
        transition: all var(--transition-base);
        white-space: nowrap;
    }

    .btn-primary:hover {
        background: var(--accent-cyan-bright);
        box-shadow: 0 4px 20px rgba(34, 211, 238, 0.3);
        color: var(--text-on-accent);
    }

    /* ============ FAQ ============ */
    .faq-list {
        max-width: 820px;
        margin: 0 auto;
    }

    .faq-item {
        background: var(--bg-card);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        margin-bottom: 12px;
        overflow: hidden;
        transition: all var(--transition-base);
    }

    .faq-item:hover {
        border-color: var(--border-hover);
    }

    .faq-question {
        width: 100%;
        padding: 18px 22px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        text-align: left;
        font-size: 16px;
        font-weight: 600;
        color: var(--text-primary);
        background: transparent;
        transition: color var(--transition-base);
        cursor: pointer;
    }

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

    .faq-question .faq-icon {
        flex-shrink: 0;
        width: 24px;
        height: 24px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 50%;
        background: rgba(34, 211, 238, 0.1);
        color: var(--accent-cyan);
        font-size: 14px;
        transition: transform var(--transition-base);
    }

    .faq-item.open .faq-icon {
        transform: rotate(45deg);
    }

    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-smooth), padding var(--transition-base);
        padding: 0 22px;
        font-size: 15px;
        color: var(--text-secondary);
        line-height: 1.75;
    }

    .faq-item.open .faq-answer {
        max-height: 300px;
        padding: 0 22px 20px;
    }

    /* ============ 相关分类入口 ============ */
    .related-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 16px;
    }

    .related-card {
        background: var(--bg-card);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        padding: 22px 18px;
        text-align: center;
        transition: all var(--transition-base);
        display: block;
        box-shadow: var(--shadow-card);
    }

    .related-card:hover {
        border-color: var(--border-hover);
        box-shadow: var(--shadow-card-hover);
        transform: translateY(-2px);
        color: var(--text-primary);
    }

    .related-card .related-icon {
        width: 44px;
        height: 44px;
        margin: 0 auto 12px;
        background: rgba(34, 211, 238, 0.1);
        border-radius: var(--radius-sm);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--accent-cyan);
        font-size: 20px;
    }

    .related-card .related-name {
        font-size: 16px;
        font-weight: 600;
        color: var(--text-primary);
    }

    .related-card .related-desc {
        font-size: 13px;
        color: var(--text-secondary);
        margin-top: 6px;
    }

    /* ============ 页脚 ============ */
    .site-footer {
        background-color: var(--bg-nav);
        border-top: 1px solid var(--border-color);
        padding: 48px 0 28px;
        margin-top: 0;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr;
        gap: 40px;
        margin-bottom: 36px;
    }

    .footer-brand .footer-logo {
        font-size: 18px;
        font-weight: 700;
        color: var(--text-primary);
        display: flex;
        align-items: center;
        gap: 8px;
        margin-bottom: 14px;
    }

    .footer-logo .logo-icon-sm {
        width: 28px;
        height: 28px;
        background: var(--accent-cyan);
        border-radius: var(--radius-sm);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--text-on-accent);
        font-weight: 800;
        font-size: 14px;
    }

    .footer-brand p {
        font-size: 14px;
        color: var(--text-secondary);
        line-height: 1.7;
        max-width: 340px;
    }

    .footer-col h4 {
        font-size: 15px;
        font-weight: 600;
        color: var(--text-primary);
        margin-bottom: 14px;
    }

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

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

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

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

    .footer-col p {
        font-size: 14px;
        color: var(--text-secondary);
        line-height: 1.7;
        margin-bottom: 12px;
    }

    .footer-rss {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-size: 14px;
        font-weight: 500;
        color: var(--accent-cyan);
    }

    .footer-rss:hover {
        color: var(--accent-cyan-bright);
    }

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

    .footer-bottom .copyright {
        font-size: 13px;
        color: var(--text-secondary);
        line-height: 1.6;
    }

    .footer-bottom .footer-links {
        font-size: 13px;
        color: var(--text-secondary);
        display: flex;
        align-items: center;
        gap: 10px;
    }

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

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

    /* ============ 响应式断点 ============ */
    @media (max-width: 1024px) {
        :root {
            --section-padding: 60px;
            --section-padding-mobile: 44px;
        }

        .app-shell {
            display: block;
        }

        .nav-sidebar {
            transform: translateX(-100%);
            transition: transform var(--transition-smooth);
            width: 260px;
        }

        .nav-sidebar.open {
            transform: translateX(0);
        }

        .drawer-overlay {
            display: block;
            pointer-events: none;
        }

        .drawer-overlay.open {
            pointer-events: auto;
        }

        .mobile-header {
            display: flex;
        }

        .main-content {
            margin-left: 0;
            padding-top: var(--header-height-mobile);
        }

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

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

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

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

    @media (max-width: 640px) {
        .section {
            padding: var(--section-padding-mobile) 0;
        }

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

        .category-header .category-desc {
            font-size: 15px;
        }

        .tournament-item {
            flex-direction: column;
        }

        .tournament-item .item-thumb {
            width: 100%;
            min-height: 180px;
            max-height: 200px;
        }

        .tournament-item .item-body {
            padding: 16px 18px;
        }

        .tournament-item .item-title {
            font-size: 16px;
        }

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

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

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

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

        .cta-inline-card {
            flex-direction: column;
            align-items: flex-start;
            padding: 24px 20px;
        }

        .filter-row {
            gap: 8px;
        }

        .filter-tag {
            padding: 6px 12px;
            font-size: 13px;
        }
    }

/* roulang page: category2 */
:root {
            --bg-primary: #0D0F14;
            --bg-card: #161A22;
            --bg-card-alt: #1C2230;
            --bg-nav: #0A0C10;
            --bg-input: #0D0F14;
            --text-primary: #F2F5F9;
            --text-secondary: #A7B0BE;
            --text-on-accent: #0A0C10;
            --accent-cyan: #22D3EE;
            --accent-cyan-bright: #3EE0F5;
            --accent-green: #A3E635;
            --accent-orange: #FB923C;
            --alert-red: #FF5C5C;
            --border-color: #2B3240;
            --border-hover: #22D3EE;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 10px;
            --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 6px 20px rgba(34, 211, 238, 0.18);
            --shadow-cta: 0 8px 30px rgba(163, 230, 53, 0.15);
            --transition-base: 0.25s ease;
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", system-ui, sans-serif;
            --font-num: "DIN Alternate", "Bebas Neue", "Arial Black", "Arial", sans-serif;
            --nav-width: 240px;
            --header-height-mobile: 60px;
            --section-padding: 88px;
            --section-padding-mobile: 44px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            -webkit-text-size-adjust: 100%;
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }
        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color var(--transition-base);
        }
        a:hover,
        a:focus {
            color: var(--accent-cyan-bright);
            outline: none;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .main-content {
            margin-left: var(--nav-width);
            min-height: 100vh;
            background-color: var(--bg-primary);
        }
        /* App Shell 侧栏 */
        .app-shell .app-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background-color: var(--bg-nav);
            border-right: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            z-index: 100;
        }
        .app-shell .nav-logo {
            padding: 24px 20px;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .nav-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--accent-cyan);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-on-accent);
            font-weight: 800;
            font-size: 18px;
            flex-shrink: 0;
        }
        .nav-logo .logo-text {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .nav-logo .logo-text span {
            color: var(--accent-cyan);
        }
        .nav-menu {
            flex: 1;
            padding: 16px 10px;
            overflow-y: auto;
        }
        .nav-menu .nav-label {
            font-size: 12px;
            color: var(--text-secondary);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            padding: 0 10px 10px;
            opacity: 0.6;
            margin: 0;
        }
        .nav-menu a.nav-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 14px;
            margin-bottom: 4px;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            position: relative;
            transition: all var(--transition-base);
            font-size: 15px;
            font-weight: 500;
            letter-spacing: 0.01em;
        }
        .nav-menu a.nav-link i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            flex-shrink: 0;
        }
        .nav-menu a.nav-link::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 0;
            background-color: var(--accent-cyan);
            border-radius: 0 3px 3px 0;
            transition: height var(--transition-base);
        }
        .nav-menu a.nav-link:hover {
            color: var(--text-primary);
            background-color: rgba(34, 211, 238, 0.06);
        }
        .nav-menu a.nav-link.active {
            color: var(--accent-cyan);
            background-color: rgba(34, 211, 238, 0.08);
        }
        .nav-menu a.nav-link.active::before {
            height: 60%;
        }
        .nav-footer {
            padding: 16px 20px;
            border-top: 1px solid var(--border-color);
            font-size: 12px;
            color: var(--text-secondary);
            flex-shrink: 0;
        }
        .nav-footer a {
            color: var(--text-secondary);
            font-size: 12px;
        }
        .nav-footer a:hover {
            color: var(--accent-cyan);
        }
        /* 移动端头部 */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-height-mobile);
            background-color: var(--bg-nav);
            border-bottom: 1px solid var(--border-color);
            z-index: 200;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
        }
        .mobile-header .mobile-logo {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
        }
        .mobile-header .mobile-logo span {
            color: var(--accent-cyan);
        }
        .mobile-header .hamburger {
            color: var(--text-primary);
            font-size: 24px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
        }
        .mobile-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 190;
            opacity: 0;
            transition: opacity var(--transition-base);
        }
        .mobile-overlay.show {
            opacity: 1;
        }
        .mobile-drawer {
            position: fixed;
            top: 0;
            left: 0;
            width: 260px;
            height: 100vh;
            background-color: var(--bg-nav);
            border-right: 1px solid var(--border-color);
            z-index: 210;
            transform: translateX(-100%);
            transition: transform var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }
        .mobile-drawer.open {
            transform: translateX(0);
        }
        .mobile-drawer .nav-logo {
            padding: 20px;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .mobile-drawer .nav-menu {
            flex: 1;
            padding: 16px 10px;
            overflow-y: auto;
        }
        .mobile-drawer .nav-footer {
            padding: 16px 20px;
        }
        /* 面包屑 */
        .breadcrumb {
            padding: 24px 0 0;
            font-size: 14px;
            color: var(--text-secondary);
        }
        .breadcrumb a {
            color: var(--text-secondary);
        }
        .breadcrumb a:hover {
            color: var(--accent-cyan);
        }
        .breadcrumb .separator {
            margin: 0 8px;
            color: var(--border-color);
        }
        .breadcrumb .current {
            color: var(--accent-cyan);
        }
        /* 分类页首屏 */
        .category-header {
            padding: 40px 0 32px;
            border-bottom: 1px solid var(--border-color);
        }
        .category-header h1 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.25;
            margin: 0 0 12px;
            color: var(--text-primary);
            letter-spacing: 0.01em;
        }
        .category-header .category-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.8;
            margin: 0;
        }
        /* 板块通用 */
        .section-block {
            padding: 48px 0;
        }
        .section-block .section-title {
            font-size: 24px;
            font-weight: 700;
            line-height: 1.35;
            margin: 0 0 20px;
            color: var(--text-primary);
        }
        .section-block .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0 0 28px;
            line-height: 1.7;
        }
        /* 筛选标签 */
        .filter-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 28px;
        }
        .filter-tag {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--transition-base);
            background: transparent;
            color: var(--text-secondary);
            border: 1px solid var(--border-color);
            letter-spacing: 0.01em;
        }
        .filter-tag:hover {
            color: var(--text-primary);
            border-color: var(--text-secondary);
        }
        .filter-tag.active {
            background: var(--accent-cyan);
            color: var(--text-on-accent);
            border-color: var(--accent-cyan);
            font-weight: 600;
        }
        /* 攻略卡片网格 */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .guide-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: all var(--transition-base);
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .guide-card .card-image {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--bg-card-alt);
            position: relative;
        }
        .guide-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }
        .guide-card:hover .card-image img {
            transform: scale(1.03);
        }
        .guide-card .card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .guide-card .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 10px;
        }
        .guide-card .card-tag {
            font-size: 12px;
            padding: 4px 10px;
            border-radius: 4px;
            background: rgba(34, 211, 238, 0.1);
            color: var(--accent-cyan);
            font-weight: 500;
            letter-spacing: 0.03em;
        }
        .guide-card .card-tag.orange {
            background: rgba(251, 146, 60, 0.12);
            color: var(--accent-orange);
        }
        .guide-card .card-tag.green {
            background: rgba(163, 230, 53, 0.1);
            color: var(--accent-green);
        }
        .guide-card .card-title {
            font-size: 17px;
            font-weight: 600;
            line-height: 1.45;
            margin: 0 0 8px;
            color: var(--text-primary);
        }
        .guide-card .card-title a {
            color: var(--text-primary);
        }
        .guide-card .card-title a:hover {
            color: var(--accent-cyan);
        }
        .guide-card .card-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0 0 14px;
            flex: 1;
        }
        .guide-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-secondary);
            border-top: 1px solid var(--border-color);
            padding-top: 12px;
        }
        .guide-card .card-date {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .guide-card .card-date i {
            font-size: 13px;
            color: var(--text-secondary);
        }
        .guide-card .card-link {
            font-size: 13px;
            font-weight: 500;
            color: var(--accent-cyan);
        }
        .guide-card .card-link:hover {
            color: var(--accent-cyan-bright);
        }
        /* 热门攻略 */
        .hot-guide-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }
        .hot-guide-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            padding: 18px;
            border: 1px solid var(--border-color);
            transition: all var(--transition-base);
            display: flex;
            gap: 14px;
            align-items: center;
        }
        .hot-guide-item:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card);
        }
        .hot-guide-item .hot-cover {
            width: 72px;
            height: 56px;
            border-radius: 4px;
            overflow: hidden;
            flex-shrink: 0;
            background: var(--bg-card-alt);
        }
        .hot-guide-item .hot-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .hot-guide-item .hot-info {
            flex: 1;
            min-width: 0;
        }
        .hot-guide-item .hot-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            margin: 0 0 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .hot-guide-item .hot-meta {
            font-size: 12px;
            color: var(--text-secondary);
            display: flex;
            gap: 8px;
        }
        /* 专题入口 */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .topic-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: all var(--transition-base);
        }
        .topic-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .topic-card .topic-image {
            aspect-ratio: 16/7;
            overflow: hidden;
            background: var(--bg-card-alt);
        }
        .topic-card .topic-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .topic-card .topic-body {
            padding: 20px;
        }
        .topic-card .topic-label {
            font-size: 12px;
            color: var(--accent-orange);
            font-weight: 600;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            margin: 0 0 6px;
        }
        .topic-card .topic-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-primary);
            margin: 0 0 8px;
            line-height: 1.4;
        }
        .topic-card .topic-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin: 0;
        }
        /* CTA 轻量 */
        .light-cta {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }
        .light-cta .cta-text {
            flex: 1;
            min-width: 260px;
        }
        .light-cta .cta-text h3 {
            font-size: 20px;
            font-weight: 700;
            margin: 0 0 6px;
            color: var(--text-primary);
        }
        .light-cta .cta-text p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.02em;
            transition: all var(--transition-base);
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--accent-cyan);
            color: var(--text-on-accent);
            border: none;
        }
        .btn-primary:hover {
            background: var(--accent-cyan-bright);
            box-shadow: 0 4px 16px rgba(34, 211, 238, 0.35);
            color: var(--text-on-accent);
        }
        .btn-outline {
            background: transparent;
            color: var(--accent-cyan);
            border: 1px solid var(--accent-cyan);
        }
        .btn-outline:hover {
            background: rgba(34, 211, 238, 0.1);
            color: var(--accent-cyan-bright);
            border-color: var(--accent-cyan-bright);
        }
        /* FAQ */
        .faq-list {
            max-width: 820px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--border-hover);
        }
        .faq-question {
            width: 100%;
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            background: none;
            border: none;
            cursor: pointer;
            color: var(--text-primary);
            font-size: 16px;
            font-weight: 600;
            text-align: left;
            letter-spacing: 0.01em;
            transition: color var(--transition-base);
        }
        .faq-question:hover {
            color: var(--accent-cyan);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            font-size: 18px;
            color: var(--accent-cyan);
            transition: transform var(--transition-base);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-base);
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }
        /* 相关分类入口 */
        .related-cats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }
        .related-cat {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            padding: 20px;
            border: 1px solid var(--border-color);
            transition: all var(--transition-base);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .related-cat:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card);
            transform: translateY(-1px);
        }
        .related-cat .cat-icon {
            width: 40px;
            height: 40px;
            background: rgba(34, 211, 238, 0.1);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 18px;
            flex-shrink: 0;
        }
        .related-cat .cat-info h4 {
            font-size: 15px;
            font-weight: 600;
            margin: 0 0 2px;
            color: var(--text-primary);
        }
        .related-cat .cat-info p {
            font-size: 13px;
            color: var(--text-secondary);
            margin: 0;
        }
        .related-cat a {
            display: flex;
            align-items: center;
            gap: 12px;
            color: inherit;
            width: 100%;
        }
        .related-cat a:hover {
            color: inherit;
        }
        /* 页脚 */
        .site-footer {
            background-color: var(--bg-nav);
            border-top: 1px solid var(--border-color);
            padding: 48px 0 24px;
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-brand .logo-icon-sm {
            width: 28px;
            height: 28px;
            background: var(--accent-cyan);
            border-radius: var(--radius-sm);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--text-on-accent);
            font-weight: 800;
            font-size: 14px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin: 0;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin: 0 0 14px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: color var(--transition-base);
        }
        .footer-col ul li a:hover {
            color: var(--accent-cyan);
        }
        .footer-col p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0 0 12px;
        }
        .footer-rss {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 500;
            color: var(--accent-cyan);
        }
        .footer-rss:hover {
            color: var(--accent-cyan-bright);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            border-top: 1px solid var(--border-color);
            padding-top: 20px;
            font-size: 13px;
            color: var(--text-secondary);
        }
        .footer-links {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-links a {
            color: var(--text-secondary);
            font-size: 13px;
        }
        .footer-links a:hover {
            color: var(--accent-cyan);
        }
        /* 响应式 */
        @media (max-width: 1024px) {
            :root {
                --section-padding: 56px;
                --section-padding-mobile: 44px;
            }
            .app-shell .app-sidebar {
                display: none;
            }
            .main-content {
                margin-left: 0;
                padding-top: var(--header-height-mobile);
            }
            .mobile-header {
                display: flex;
            }
            .mobile-overlay.show {
                display: block;
            }
            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .hot-guide-list {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .topic-grid {
                grid-template-columns: 1fr;
            }
            .related-cats {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .section-block {
                padding: 36px 0;
            }
            .category-header h1 {
                font-size: 30px;
            }
        }
        @media (max-width: 640px) {
            .guide-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .hot-guide-list {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .related-cats {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .filter-tags {
                gap: 8px;
                flex-wrap: nowrap;
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
                padding-bottom: 4px;
            }
            .filter-tag {
                flex-shrink: 0;
                padding: 7px 14px;
                font-size: 13px;
            }
            .light-cta {
                padding: 20px;
                flex-direction: column;
                align-items: stretch;
            }
            .light-cta .btn {
                width: 100%;
                justify-content: center;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .category-header h1 {
                font-size: 26px;
            }
            .section-block .section-title {
                font-size: 20px;
            }
            .breadcrumb {
                padding-top: 16px;
                font-size: 13px;
            }
        }

/* roulang page: category4 */
:root {
            --bg-primary: #0D0F14;
            --bg-card: #161A22;
            --bg-card-alt: #1C2230;
            --bg-nav: #0A0C10;
            --bg-input: #0D0F14;
            --text-primary: #F2F5F9;
            --text-secondary: #A7B0BE;
            --text-on-accent: #0A0C10;
            --accent-cyan: #22D3EE;
            --accent-cyan-bright: #3EE0F5;
            --accent-green: #A3E635;
            --accent-orange: #FB923C;
            --alert-red: #FF5C5C;
            --border-color: #2B3240;
            --border-hover: #22D3EE;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 10px;
            --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 6px 20px rgba(34, 211, 238, 0.18);
            --shadow-cta: 0 8px 30px rgba(163, 230, 53, 0.15);
            --transition-base: 0.25s ease;
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", system-ui, sans-serif;
            --font-num: "DIN Alternate", "Bebas Neue", "Arial Black", "Arial", sans-serif;
            --nav-width: 240px;
            --header-height-mobile: 60px;
            --section-padding: 72px;
            --section-padding-mobile: 44px;
        }

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

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

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color var(--transition-base);
        }

        a:hover,
        a:focus {
            color: var(--accent-cyan-bright);
            outline: none;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
        }

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .app-shell {
            display: flex;
            min-height: 100vh;
        }

        .side-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background-color: var(--bg-nav);
            border-right: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            z-index: 100;
            overflow-y: auto;
            transition: transform var(--transition-smooth);
        }

        .side-nav .nav-logo {
            padding: 24px 20px;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--accent-cyan);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-on-accent);
            font-weight: 800;
            font-size: 18px;
            flex-shrink: 0;
        }

        .nav-logo .logo-text {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .nav-logo .logo-text span {
            color: var(--accent-cyan);
        }

        .nav-menu {
            flex: 1;
            padding: 16px 10px;
            overflow-y: auto;
        }

        .nav-menu .nav-label {
            font-size: 12px;
            color: var(--text-secondary);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            padding: 0 10px 10px;
            opacity: 0.6;
        }

        .nav-menu a.nav-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 14px;
            margin-bottom: 4px;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            position: relative;
            transition: all var(--transition-base);
            font-size: 15px;
            font-weight: 500;
            letter-spacing: 0.01em;
        }

        .nav-menu a.nav-link i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            flex-shrink: 0;
        }

        .nav-menu a.nav-link::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 0;
            background-color: var(--accent-cyan);
            border-radius: 0 3px 3px 0;
            transition: height var(--transition-base);
        }

        .nav-menu a.nav-link:hover {
            color: var(--text-primary);
            background-color: rgba(34, 211, 238, 0.06);
        }

        .nav-menu a.nav-link.active {
            color: var(--accent-cyan);
            background-color: rgba(34, 211, 238, 0.08);
        }

        .nav-menu a.nav-link.active::before {
            height: 60%;
        }

        .nav-footer {
            padding: 16px 20px;
            border-top: 1px solid var(--border-color);
            flex-shrink: 0;
        }

        .nav-footer p {
            font-size: 12px;
            color: var(--text-secondary);
            margin: 0 0 8px;
            line-height: 1.5;
        }

        .nav-footer a {
            font-size: 13px;
            color: var(--text-secondary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .nav-footer a:hover {
            color: var(--accent-cyan);
        }

        .mobile-header {
            display: none;
        }

        .main-content {
            margin-left: var(--nav-width);
            flex: 1;
            min-height: 100vh;
            background-color: var(--bg-primary);
        }

        .page-body {
            padding: 48px 0 0;
        }

        .breadcrumb-wrap {
            padding: 24px 0 16px;
            border-bottom: 1px solid var(--border-color);
            background-color: var(--bg-card);
        }

        .breadcrumb {
            font-size: 14px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

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

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

        .breadcrumb .current {
            color: var(--accent-cyan);
            font-weight: 600;
        }

        .category-header {
            padding: 40px 0 24px;
            background-color: var(--bg-card);
            border-bottom: 1px solid var(--border-color);
        }

        .category-header h1 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.25;
            margin: 0 0 12px;
            color: var(--text-primary);
            letter-spacing: 0.01em;
        }

        .category-header .category-desc {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 860px;
            margin: 0;
        }

        .filter-bar {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            padding: 20px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .filter-label {
            font-size: 14px;
            color: var(--text-secondary);
            margin-right: 4px;
            font-weight: 500;
        }

        .filter-tag {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            background: transparent;
            border: 1px solid var(--border-color);
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .filter-tag:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
        }

        .filter-tag.active {
            background-color: var(--accent-cyan);
            border-color: var(--accent-cyan);
            color: var(--text-on-accent);
        }

        .article-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 28px;
            padding: 32px 0 0;
        }

        .article-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .article-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .article-card .card-image {
            aspect-ratio: 16/9;
            overflow: hidden;
            background-color: var(--bg-card-alt);
            position: relative;
        }

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

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

        .card-image .heat-badge {
            position: absolute;
            top: 12px;
            right: 12px;
            background: rgba(10, 12, 16, 0.8);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 4px 12px;
            font-size: 12px;
            color: var(--accent-orange);
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .card-image .heat-badge i {
            font-size: 11px;
        }

        .article-card .card-content {
            padding: 20px 22px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .article-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 10px;
            flex-wrap: wrap;
        }

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

        .article-card .card-meta .tag {
            background: rgba(34, 211, 238, 0.1);
            color: var(--accent-cyan);
            padding: 2px 10px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
        }

        .article-card h3 {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.45;
            margin: 0 0 10px;
            color: var(--text-primary);
        }

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

        .article-card h3 a:hover {
            color: var(--accent-cyan);
        }

        .article-card .card-excerpt {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0 0 16px;
            flex: 1;
        }

        .article-card .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-cyan);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition-base);
        }

        .article-card .card-link:hover {
            color: var(--accent-cyan-bright);
            gap: 10px;
        }

        .hot-topic-section {
            padding: var(--section-padding) 0;
            border-bottom: 1px solid var(--border-color);
        }

        .section-header {
            margin-bottom: 28px;
        }

        .section-header h2 {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.35;
            color: var(--text-primary);
            margin: 0 0 8px;
        }

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

        .hot-topic-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .hot-topic-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 22px;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            align-items: flex-start;
        }

        .hot-topic-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .hot-topic-card .topic-icon {
            width: 44px;
            height: 44px;
            background: rgba(34, 211, 238, 0.1);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 20px;
            margin-bottom: 12px;
        }

        .hot-topic-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin: 0 0 8px;
        }

        .hot-topic-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin: 0;
        }

        .feature-topic-section {
            padding: var(--section-padding) 0;
            border-bottom: 1px solid var(--border-color);
        }

        .feature-topic-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .feature-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .feature-card .feature-image {
            aspect-ratio: 16/7;
            overflow: hidden;
            background-color: var(--bg-card-alt);
        }

        .feature-card .feature-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

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

        .feature-card .feature-content {
            padding: 24px 26px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .feature-card .feature-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent-green);
            margin-bottom: 8px;
        }

        .feature-card h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-primary);
            margin: 0 0 10px;
            line-height: 1.45;
        }

        .feature-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        .cta-section {
            padding: var(--section-padding) 0;
        }

        .cta-card {
            background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-card-alt) 100%);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 40px 36px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
            flex-wrap: wrap;
        }

        .cta-card .cta-text h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 8px;
        }

        .cta-card .cta-text p {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent-cyan);
            color: var(--text-on-accent);
            border-radius: var(--radius-sm);
            padding: 14px 28px;
            font-size: 15px;
            font-weight: 600;
            border: none;
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--accent-cyan-bright);
            color: var(--text-on-accent);
            box-shadow: 0 4px 16px rgba(34, 211, 238, 0.3);
        }

        .related-nav-section {
            padding: var(--section-padding) 0 0;
        }

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

        .related-nav-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 20px;
            text-align: center;
            transition: all var(--transition-base);
            display: block;
        }

        .related-nav-item:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .related-nav-item i {
            font-size: 26px;
            color: var(--accent-cyan);
            margin-bottom: 10px;
            display: block;
        }

        .related-nav-item .rel-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
        }

        .related-nav-item .rel-desc {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 4px;
        }

        .site-footer {
            background-color: var(--bg-nav);
            border-top: 1px solid var(--border-color);
            padding: 48px 0 24px;
            margin-top: 64px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }

        .footer-logo {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-logo .logo-icon-sm {
            width: 30px;
            height: 30px;
            background: var(--accent-cyan);
            border-radius: var(--radius-sm);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--text-on-accent);
            font-weight: 800;
            font-size: 15px;
            flex-shrink: 0;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin: 0 0 14px;
        }

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

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

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

        .footer-rss {
            font-size: 14px;
            color: var(--text-secondary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 8px;
        }

        .footer-rss:hover {
            color: var(--accent-cyan);
        }

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

        .footer-bottom .copyright {
            font-size: 13px;
        }

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

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

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

        .section-divider {
            height: 1px;
            background: var(--border-color);
            margin: 0;
        }

        .nav-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.6);
            z-index: 99;
            opacity: 0;
            transition: opacity var(--transition-base);
        }

        .nav-overlay.show {
            display: block;
            opacity: 1;
        }

        @media (max-width: 1024px) {
            .side-nav {
                transform: translateX(-100%);
                box-shadow: none;
            }

            .side-nav.open {
                transform: translateX(0);
                box-shadow: 4px 0 24px rgba(0, 0, 0, 0.4);
            }

            .mobile-header {
                display: flex;
                align-items: center;
                justify-content: space-between;
                height: var(--header-height-mobile);
                background-color: var(--bg-nav);
                border-bottom: 1px solid var(--border-color);
                padding: 0 16px;
                position: sticky;
                top: 0;
                z-index: 50;
            }

            .mobile-header .mobile-logo {
                font-size: 17px;
                font-weight: 700;
                color: var(--text-primary);
                display: flex;
                align-items: center;
                gap: 8px;
            }

            .mobile-header .mobile-logo .logo-icon-sm {
                width: 28px;
                height: 28px;
                background: var(--accent-cyan);
                border-radius: var(--radius-sm);
                display: inline-flex;
                align-items: center;
                justify-content: center;
                color: var(--text-on-accent);
                font-weight: 800;
                font-size: 13px;
            }

            .mobile-header .hamburger {
                font-size: 22px;
                color: var(--text-primary);
                padding: 8px;
                border-radius: var(--radius-sm);
                transition: all var(--transition-base);
                display: flex;
                align-items: center;
                justify-content: center;
            }

            .mobile-header .hamburger:hover {
                background: rgba(34, 211, 238, 0.08);
                color: var(--accent-cyan);
            }

            .main-content {
                margin-left: 0;
            }

            .page-body {
                padding-top: 0;
            }

            .article-grid {
                grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
                gap: 20px;
            }

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

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

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

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

        @media (max-width: 640px) {
            :root {
                --section-padding: var(--section-padding-mobile);
            }

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

            .category-header .category-desc {
                font-size: 15px;
            }

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

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

            .related-nav-grid {
                grid-template-columns: 1fr;
            }

            .cta-card {
                padding: 28px 22px;
                flex-direction: column;
                text-align: center;
                align-items: stretch;
            }

            .cta-card .btn-primary {
                justify-content: center;
            }

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

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

            .filter-bar {
                gap: 8px;
            }

            .filter-tag {
                padding: 6px 14px;
                font-size: 13px;
            }

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

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

        @media (max-width: 420px) {
            .category-header h1 {
                font-size: 24px;
            }

            .article-card .card-content {
                padding: 16px 18px 20px;
            }

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

/* roulang page: category3 */
:root {
            --bg-primary: #0D0F14;
            --bg-card: #161A22;
            --bg-card-alt: #1C2230;
            --bg-nav: #0A0C10;
            --bg-input: #0D0F14;
            --text-primary: #F2F5F9;
            --text-secondary: #A7B0BE;
            --text-on-accent: #0A0C10;
            --accent-cyan: #22D3EE;
            --accent-cyan-bright: #3EE0F5;
            --accent-green: #A3E635;
            --accent-orange: #FB923C;
            --alert-red: #FF5C5C;
            --border-color: #2B3240;
            --border-hover: #22D3EE;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 10px;
            --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 6px 20px rgba(34, 211, 238, 0.18);
            --shadow-cta: 0 8px 30px rgba(163, 230, 53, 0.15);
            --transition-base: 0.25s ease;
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", system-ui, sans-serif;
            --font-num: "DIN Alternate", "Bebas Neue", "Arial Black", "Arial", sans-serif;
            --nav-width: 240px;
            --header-height-mobile: 60px;
            --section-padding: 80px;
            --section-padding-mobile: 48px;
        }

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

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

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color var(--transition-base);
        }

        a:hover,
        a:focus {
            color: var(--accent-cyan-bright);
            outline: none;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
        }

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0 0 0.5em;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-primary);
        }

        h1 {
            font-size: 36px;
            letter-spacing: -0.01em;
        }

        h2 {
            font-size: 28px;
            letter-spacing: -0.005em;
        }

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

        p {
            margin: 0 0 1em;
            color: var(--text-secondary);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ============ App Shell 导航 ============ */
        .app-shell {
            display: flex;
            min-height: 100vh;
        }

        .side-nav {
            position: fixed;
            left: 0;
            top: 0;
            width: var(--nav-width);
            height: 100vh;
            background-color: var(--bg-nav);
            border-right: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            z-index: 100;
            transition: transform var(--transition-smooth);
        }

        .nav-logo {
            padding: 24px 20px;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--accent-cyan);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-on-accent);
            font-weight: 800;
            font-size: 18px;
            flex-shrink: 0;
        }

        .nav-logo .logo-text {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .nav-logo .logo-text span {
            color: var(--accent-cyan);
        }

        .nav-menu {
            flex: 1;
            padding: 16px 10px;
            overflow-y: auto;
        }

        .nav-menu .nav-label {
            font-size: 12px;
            color: var(--text-secondary);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            padding: 0 10px 10px;
            opacity: 0.6;
        }

        .nav-menu a.nav-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 14px;
            margin-bottom: 4px;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            position: relative;
            transition: all var(--transition-base);
            font-size: 15px;
            font-weight: 500;
            letter-spacing: 0.01em;
        }

        .nav-menu a.nav-link i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            flex-shrink: 0;
        }

        .nav-menu a.nav-link::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 0;
            background-color: var(--accent-cyan);
            border-radius: 0 3px 3px 0;
            transition: height var(--transition-base);
        }

        .nav-menu a.nav-link:hover {
            color: var(--text-primary);
            background-color: rgba(34, 211, 238, 0.06);
        }

        .nav-menu a.nav-link.active {
            color: var(--accent-cyan);
            background-color: rgba(34, 211, 238, 0.08);
        }

        .nav-menu a.nav-link.active::before {
            height: 60%;
        }

        .nav-footer {
            padding: 16px 20px;
            border-top: 1px solid var(--border-color);
            flex-shrink: 0;
            font-size: 12px;
            color: var(--text-secondary);
            opacity: 0.7;
        }

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

        .nav-footer a:hover {
            color: var(--accent-cyan);
        }

        .main-content {
            flex: 1;
            margin-left: var(--nav-width);
            min-height: 100vh;
            background-color: var(--bg-primary);
        }

        /* ============ 移动端顶部栏 ============ */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-height-mobile);
            background-color: var(--bg-nav);
            border-bottom: 1px solid var(--border-color);
            z-index: 99;
            align-items: center;
            padding: 0 16px;
            gap: 12px;
        }

        .mobile-topbar .hamburger {
            font-size: 22px;
            color: var(--text-primary);
            background: none;
            border: none;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            transition: background var(--transition-base);
        }

        .mobile-topbar .hamburger:hover {
            background: rgba(34, 211, 238, 0.1);
        }

        .mobile-topbar .mobile-logo {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.02em;
        }

        .mobile-topbar .mobile-logo span {
            color: var(--accent-cyan);
        }

        .drawer-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 98;
            opacity: 0;
            transition: opacity var(--transition-base);
        }

        .drawer-overlay.show {
            opacity: 1;
        }

        /* ============ 通用板块样式 ============ */
        .section {
            padding: var(--section-padding) 0;
        }

        .section-alt {
            background-color: var(--bg-card);
        }

        .section-heading {
            margin-bottom: 32px;
        }

        .section-heading h2 {
            margin-bottom: 8px;
            font-size: 28px;
        }

        .section-heading .section-sub {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.7;
        }

        /* ============ 面包屑 ============ */
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            padding: 16px 0;
            margin-bottom: 8px;
        }

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

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

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

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

        /* ============ 分类页头部 ============ */
        .category-header {
            padding: 20px 0 36px;
        }

        .category-header h1 {
            font-size: 36px;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .category-header .category-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 760px;
            line-height: 1.8;
        }

        /* ============ 筛选标签 ============ */
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 28px;
            padding: 4px 0;
        }

        .filter-tag {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            background: transparent;
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .filter-tag:hover {
            border-color: var(--border-hover);
            color: var(--text-primary);
            background: rgba(34, 211, 238, 0.06);
        }

        .filter-tag.active {
            background: var(--accent-cyan);
            border-color: var(--accent-cyan);
            color: var(--text-on-accent);
            font-weight: 600;
        }

        .filter-tag:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
        }

        /* ============ 战队排名列表 ============ */
        .rank-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .rank-row {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 18px 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            transition: all var(--transition-base);
            flex-wrap: wrap;
        }

        .rank-row:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .rank-number {
            font-family: var(--font-num);
            font-size: 40px;
            font-weight: 700;
            color: var(--accent-cyan);
            min-width: 56px;
            text-align: center;
            line-height: 1;
            flex-shrink: 0;
        }

        .rank-number.rank-top {
            color: var(--accent-green);
        }

        .rank-number.rank-high {
            color: var(--accent-orange);
        }

        .rank-info {
            flex: 1;
            min-width: 200px;
        }

        .rank-info .rank-name {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .rank-info .rank-name .badge {
            font-size: 12px;
            padding: 2px 10px;
            border-radius: 999px;
            background: rgba(34, 211, 238, 0.12);
            color: var(--accent-cyan);
            font-weight: 500;
            letter-spacing: 0.02em;
        }

        .rank-info .rank-detail {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        .rank-stats {
            display: flex;
            gap: 24px;
            align-items: center;
            flex-wrap: wrap;
            flex-shrink: 0;
        }

        .rank-stat-item {
            text-align: center;
            min-width: 70px;
        }

        .rank-stat-item .stat-label {
            font-size: 12px;
            color: var(--text-secondary);
            margin-bottom: 2px;
        }

        .rank-stat-item .stat-value {
            font-family: var(--font-num);
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.2;
        }

        .rank-stat-item .stat-value.trend-up {
            color: var(--accent-green);
        }

        .rank-stat-item .stat-value.trend-down {
            color: var(--alert-red);
        }

        .trend-arrow {
            font-size: 14px;
            margin-left: 4px;
        }

        .trend-arrow.up {
            color: var(--accent-green);
        }

        .trend-arrow.down {
            color: var(--alert-red);
        }

        /* ============ 按钮 ============ */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.01em;
            transition: all var(--transition-base);
            cursor: pointer;
            text-decoration: none;
            line-height: 1.4;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--accent-cyan);
            color: var(--text-on-accent);
            border: none;
        }

        .btn-primary:hover {
            background: var(--accent-cyan-bright);
            color: var(--text-on-accent);
            box-shadow: 0 4px 18px rgba(34, 211, 238, 0.35);
        }

        .btn-secondary {
            background: transparent;
            color: var(--accent-cyan);
            border: 1px solid var(--accent-cyan);
        }

        .btn-secondary:hover {
            background: rgba(34, 211, 238, 0.1);
            color: var(--accent-cyan-bright);
            border-color: var(--accent-cyan-bright);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
        }

        /* ============ 卡片 ============ */
        .card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-card);
        }

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

        .card-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            background-color: var(--bg-card-alt);
        }

        .card-body {
            padding: 20px;
        }

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

        .card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 12px;
            line-height: 1.65;
        }

        .card-tag {
            display: inline-block;
            font-size: 12px;
            padding: 3px 10px;
            border-radius: 999px;
            background: rgba(163, 230, 53, 0.1);
            color: var(--accent-green);
            font-weight: 500;
            margin-bottom: 8px;
        }

        .card-date {
            font-size: 13px;
            color: var(--text-secondary);
            opacity: 0.8;
        }

        /* ============ 热门战队数据卡片 ============ */
        .hot-team-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 20px;
        }

        .hot-team-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 22px;
            transition: all var(--transition-base);
        }

        .hot-team-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
        }

        .hot-team-card .team-name {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .hot-team-card .team-name .team-icon {
            width: 28px;
            height: 28px;
            background: var(--accent-cyan);
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            color: var(--text-on-accent);
            font-weight: 700;
            flex-shrink: 0;
        }

        .hot-team-card .team-metrics {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .hot-team-card .team-metric {
            text-align: center;
        }

        .hot-team-card .team-metric .metric-value {
            font-family: var(--font-num);
            font-size: 24px;
            font-weight: 700;
            color: var(--accent-cyan);
            line-height: 1.2;
        }

        .hot-team-card .team-metric .metric-label {
            font-size: 12px;
            color: var(--text-secondary);
        }

        /* ============ 专题卡片 ============ */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
        }

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .feature-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .feature-card .feature-img {
            width: 100%;
            aspect-ratio: 21/9;
            object-fit: cover;
            background: var(--bg-card-alt);
        }

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

        .feature-card .feature-body h3 {
            font-size: 18px;
            margin-bottom: 8px;
        }

        .feature-card .feature-body p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 16px;
            line-height: 1.7;
            flex: 1;
        }

        /* ============ CTA 板块 ============ */
        .cta-banner {
            background: linear-gradient(135deg, rgba(34, 211, 238, 0.12) 0%, rgba(163, 230, 53, 0.08) 100%);
            border: 1px solid rgba(34, 211, 238, 0.25);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .cta-banner .cta-text h3 {
            font-size: 22px;
            margin-bottom: 6px;
            color: var(--text-primary);
        }

        .cta-banner .cta-text p {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* ============ FAQ ============ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color var(--transition-base);
        }

        .faq-item:hover {
            border-color: var(--border-hover);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: color var(--transition-base);
            font-family: var(--font-sans);
        }

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

        .faq-icon {
            font-size: 18px;
            color: var(--accent-cyan);
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-base);
            padding: 0 22px;
        }

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

        .faq-answer p {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.75;
        }

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

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

        .footer-brand .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
            letter-spacing: 0.02em;
        }

        .footer-brand .footer-logo .logo-icon-sm {
            width: 30px;
            height: 30px;
            background: var(--accent-cyan);
            border-radius: var(--radius-sm);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--text-on-accent);
            font-weight: 800;
            font-size: 15px;
            flex-shrink: 0;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            max-width: 360px;
            line-height: 1.7;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

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

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

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

        .footer-col p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
        }

        .footer-rss {
            font-size: 14px;
            color: var(--accent-cyan);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-rss:hover {
            color: var(--accent-cyan-bright);
        }

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

        .copyright {
            font-size: 13px;
            color: var(--text-secondary);
            opacity: 0.8;
        }

        .footer-links {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
        }

        .footer-links a {
            color: var(--text-secondary);
            font-size: 13px;
            transition: color var(--transition-base);
        }

        .footer-links a:hover {
            color: var(--accent-cyan);
        }

        /* ============ 移动端响应式 ============ */
        @media (max-width: 1024px) {
            :root {
                --section-padding: 56px;
                --section-padding-mobile: 40px;
            }

            .side-nav {
                transform: translateX(-100%);
                box-shadow: 4px 0 24px rgba(0, 0, 0, 0.5);
            }

            .side-nav.open {
                transform: translateX(0);
            }

            .drawer-overlay {
                display: block;
                pointer-events: none;
            }

            .drawer-overlay.show {
                pointer-events: auto;
            }

            .main-content {
                margin-left: 0;
                padding-top: var(--header-height-mobile);
            }

            .mobile-topbar {
                display: flex;
            }

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

            .section {
                padding: var(--section-padding-mobile) 0;
            }

            .rank-row {
                padding: 14px 16px;
                gap: 12px;
            }

            .rank-number {
                font-size: 32px;
                min-width: 44px;
            }

            .rank-stats {
                gap: 16px;
                width: 100%;
                justify-content: flex-start;
                padding-left: 56px;
            }

            .cta-banner {
                padding: 24px 20px;
                flex-direction: column;
                text-align: center;
            }

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

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }

        @media (max-width: 640px) {
            :root {
                --section-padding-mobile: 36px;
            }

            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

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

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

            .filter-bar {
                gap: 6px;
            }

            .filter-tag {
                padding: 6px 14px;
                font-size: 13px;
            }

            .rank-row {
                padding: 12px 14px;
                gap: 8px;
            }

            .rank-number {
                font-size: 28px;
                min-width: 36px;
            }

            .rank-info .rank-name {
                font-size: 16px;
            }

            .rank-stat-item .stat-value {
                font-size: 17px;
            }

            .rank-stats {
                padding-left: 44px;
                gap: 12px;
            }

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

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

            .faq-question {
                padding: 14px 16px;
                font-size: 14px;
            }

            .faq-answer {
                padding: 0 16px;
            }

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

            .cta-banner {
                padding: 20px 16px;
            }

            .cta-banner .cta-text h3 {
                font-size: 18px;
            }

            .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
        }