/* roulang page: index */
:root {
            --bg-primary: #0B0F14;
            --bg-secondary: #131A22;
            --bg-card: #131A22;
            --bg-card-hover: #18222E;
            --brand-green: #00E676;
            --brand-cyan: #00BCD4;
            --brand-gradient: linear-gradient(135deg, #00E676 0%, #00BCD4 100%);
            --accent-orange: #FF5722;
            --aux-cyan: #4DD0E1;
            --text-primary: #F2F4F8;
            --text-secondary: #AAB3C0;
            --text-muted: #677586;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-medium: rgba(255, 255, 255, 0.14);
            --border-cyan: rgba(0, 188, 212, 0.5);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 16px 40px rgba(0, 0, 0, 0.5);
            --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-bounce: 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
        }

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

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

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            font-size: 15px;
            overflow-x: hidden;
            min-height: 100vh;
        }

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

        a:hover {
            color: var(--brand-green);
        }

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

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

        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 640px) {
            .container-custom {
                padding: 0 16px;
            }
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(11, 15, 20, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            background: rgba(11, 15, 20, 0.98);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 20px;
            color: var(--text-primary);
            white-space: nowrap;
            letter-spacing: -0.5px;
        }
        .nav-logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--brand-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--bg-primary);
            font-size: 18px;
            font-weight: 900;
            flex-shrink: 0;
        }
        .nav-logo:hover {
            color: var(--text-primary);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }
        .nav-links a {
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 14px;
            padding: 8px 2px;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition-base);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--brand-gradient);
            border-radius: 2px;
            transition: width var(--transition-base);
        }
        .nav-links a:hover {
            color: var(--text-primary);
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .nav-links a.active {
            color: var(--brand-green);
        }
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 22px;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
            transition: background var(--transition-base);
        }
        .nav-toggle:hover {
            background: var(--border-subtle);
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 12px 16px 20px;
            border-top: 1px solid var(--border-subtle);
            background: var(--bg-primary);
        }
        .mobile-menu a {
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 15px;
            padding: 12px 12px;
            border-radius: 10px;
            transition: all var(--transition-base);
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: var(--bg-secondary);
            color: var(--brand-green);
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-toggle {
                display: block;
            }
            .mobile-menu.open {
                display: flex;
            }
            .nav-wrapper {
                height: 60px;
            }
        }

        /* ===== Hero 斜切 ===== */
        .hero-section {
            position: relative;
            min-height: 68vh;
            display: flex;
            align-items: center;
            overflow: hidden;
            background: var(--bg-primary);
            padding: 80px 0 60px;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
        }
        .hero-bg img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.45;
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 15, 20, 0.7) 0%, rgba(11, 15, 20, 0.85) 50%, var(--bg-primary) 100%);
        }
        .hero-slash {
            position: absolute;
            top: -10%;
            right: -15%;
            width: 65%;
            height: 120%;
            background: var(--brand-gradient);
            opacity: 0.08;
            transform: skewX(-12deg);
            z-index: 1;
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 230, 118, 0.1);
            border: 1px solid rgba(0, 230, 118, 0.3);
            color: var(--brand-green);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 20px;
            margin-bottom: 20px;
            letter-spacing: 0.3px;
        }
        .hero-tag i {
            font-size: 12px;
        }
        .hero-title {
            font-size: 48px;
            font-weight: 900;
            line-height: 1.2;
            color: var(--text-primary);
            letter-spacing: -1px;
            margin-bottom: 20px;
        }
        .hero-title .gradient-text {
            background: var(--brand-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            white-space: nowrap;
        }
        .hero-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 32px;
            max-width: 640px;
        }
        .hero-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-data-points {
            display: flex;
            gap: 32px;
            margin-top: 36px;
            flex-wrap: wrap;
        }
        .hero-data-item {
            text-align: left;
        }
        .hero-data-item .number {
            font-size: 28px;
            font-weight: 800;
            background: var(--brand-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            line-height: 1.2;
        }
        .hero-data-item .label {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        @media (max-width: 1024px) {
            .hero-title {
                font-size: 38px;
            }
            .hero-slash {
                right: -25%;
                width: 80%;
            }
        }
        @media (max-width: 768px) {
            .hero-section {
                min-height: auto;
                padding: 56px 0 44px;
            }
            .hero-title {
                font-size: 30px;
                letter-spacing: -0.5px;
            }
            .hero-title .gradient-text {
                white-space: normal;
            }
            .hero-desc {
                font-size: 15px;
                line-height: 1.75;
            }
            .hero-slash {
                right: -40%;
                width: 100%;
                opacity: 0.06;
            }
            .hero-data-points {
                gap: 20px;
            }
            .hero-data-item .number {
                font-size: 22px;
            }
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 12px;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            border: none;
            transition: all var(--transition-base);
            text-decoration: none;
            white-space: nowrap;
            letter-spacing: 0.2px;
        }
        .btn:focus-visible {
            outline: 3px solid rgba(0, 230, 118, 0.6);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--brand-gradient);
            color: var(--bg-primary);
            box-shadow: 0 4px 20px rgba(0, 230, 118, 0.25);
        }
        .btn-primary:hover {
            filter: brightness(1.1);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 230, 118, 0.35);
            color: var(--bg-primary);
        }
        .btn-primary:active {
            filter: brightness(0.95);
            transform: translateY(0);
        }
        .btn-secondary {
            background: transparent;
            border: 1px solid var(--brand-cyan);
            color: var(--brand-cyan);
        }
        .btn-secondary:hover {
            border-color: var(--brand-green);
            color: var(--brand-green);
            background: rgba(0, 188, 212, 0.06);
            transform: translateY(-2px);
        }
        .btn-secondary:active {
            transform: translateY(0);
        }
        .btn-arrow {
            background: transparent;
            border: none;
            color: var(--brand-cyan);
            font-weight: 600;
            font-size: 14px;
            padding: 4px 0;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition-base);
            text-decoration: none;
        }
        .btn-arrow:hover {
            color: var(--brand-green);
            gap: 10px;
        }
        .btn-arrow i {
            font-size: 13px;
            transition: transform var(--transition-base);
        }
        .btn-arrow:hover i {
            transform: translateX(3px);
        }
        .btn-sm {
            padding: 9px 18px;
            font-size: 13px;
            border-radius: 10px;
        }

        @media (max-width: 640px) {
            .btn {
                padding: 10px 18px;
                font-size: 14px;
            }
            .hero-actions .btn {
                flex: 1;
                min-width: 140px;
            }
        }

        /* ===== 板块 ===== */
        .section {
            padding: 80px 0;
            position: relative;
        }
        .section-alt {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }
        .section-header {
            margin-bottom: 44px;
        }
        .section-header .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--brand-green);
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 10px;
        }
        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            margin-bottom: 12px;
        }
        .section-header p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 680px;
        }
        @media (max-width: 768px) {
            .section {
                padding: 52px 0;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .section-header {
                margin-bottom: 28px;
            }
            .section-header p {
                font-size: 14px;
            }
        }

        /* ===== 数据徽章 ===== */
        .kpi-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .kpi-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            position: relative;
            overflow: hidden;
            transition: all var(--transition-base);
            text-align: center;
        }
        .kpi-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--brand-gradient);
            border-radius: 0 0 4px 4px;
        }
        .kpi-card:hover {
            border-color: rgba(0, 188, 212, 0.35);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .kpi-number {
            font-size: 36px;
            font-weight: 800;
            background: var(--brand-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            line-height: 1.2;
            letter-spacing: -1px;
        }
        .kpi-label {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 8px;
            font-weight: 500;
        }
        .kpi-note {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 6px;
        }
        @media (max-width: 1024px) {
            .kpi-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 640px) {
            .kpi-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .kpi-card {
                padding: 20px 16px;
            }
            .kpi-number {
                font-size: 28px;
            }
        }

        /* ===== 服务矩阵卡片 ===== */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .service-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-card);
        }
        .service-card:hover {
            border-color: rgba(0, 188, 212, 0.35);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-6px);
        }
        .service-card .card-img {
            height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
            overflow: hidden;
        }
        .service-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .service-card:hover .card-img img {
            transform: scale(1.05);
        }
        .service-card .card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(11, 15, 20, 0.85) 100%);
        }
        .service-card .card-body {
            padding: 20px 22px 24px;
        }
        .service-card .card-body h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
            letter-spacing: -0.3px;
        }
        .service-card .card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        @media (max-width: 1024px) {
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .service-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 结果对比 ===== */
        .compare-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            align-items: stretch;
        }
        .compare-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px 26px;
            transition: all var(--transition-base);
        }
        .compare-card.highlight {
            border: 1px solid rgba(0, 230, 118, 0.35);
            box-shadow: 0 0 30px rgba(0, 230, 118, 0.08);
            background: rgba(0, 230, 118, 0.03);
            position: relative;
        }
        .compare-card.highlight::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--brand-gradient);
            border-radius: 4px 4px 0 0;
        }
        .compare-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 18px;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .compare-card.highlight h3 {
            color: var(--brand-green);
        }
        .compare-card ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .compare-card ul li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
        }
        .compare-card ul li i {
            font-size: 14px;
            margin-top: 4px;
            flex-shrink: 0;
        }
        .compare-card ul li i.fa-times-circle {
            color: var(--accent-orange);
        }
        .compare-card ul li i.fa-check-circle {
            color: var(--brand-green);
        }
        @media (max-width: 768px) {
            .compare-wrapper {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 里程碑 ===== */
        .timeline {
            position: relative;
            padding-left: 28px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, var(--brand-green) 0%, var(--brand-cyan) 100%);
            border-radius: 2px;
        }
        .timeline-item {
            position: relative;
            padding: 0 0 32px 16px;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -24px;
            top: 6px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--brand-gradient);
            box-shadow: 0 0 12px rgba(0, 230, 118, 0.5);
        }
        .timeline-item .date {
            font-size: 13px;
            font-weight: 600;
            color: var(--brand-cyan);
            letter-spacing: 0.5px;
            margin-bottom: 4px;
        }
        .timeline-item .event {
            font-size: 15px;
            color: var(--text-primary);
            font-weight: 500;
            line-height: 1.6;
        }
        .timeline-item .event-desc {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 4px;
            line-height: 1.65;
        }
        @media (max-width: 640px) {
            .timeline {
                padding-left: 20px;
            }
            .timeline-item::before {
                left: -16px;
                width: 8px;
                height: 8px;
            }
            .timeline-item .date {
                font-size: 12px;
            }
            .timeline-item .event {
                font-size: 14px;
            }
        }

        /* ===== 新闻列表 ===== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-item {
            display: flex;
            gap: 20px;
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            transition: all var(--transition-base);
            align-items: flex-start;
        }
        .news-item:hover {
            border-color: rgba(0, 188, 212, 0.3);
            box-shadow: var(--shadow-card);
            transform: translateX(4px);
        }
        .news-date {
            font-size: 13px;
            color: var(--brand-cyan);
            font-weight: 600;
            white-space: nowrap;
            min-width: 90px;
            padding-top: 2px;
        }
        .news-content h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
            line-height: 1.45;
        }
        .news-content p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 10px;
        }
        @media (max-width: 640px) {
            .news-item {
                flex-direction: column;
                gap: 8px;
                padding: 16px 18px;
            }
            .news-date {
                min-width: auto;
            }
        }

        /* ===== 品牌介绍 ===== */
        .brand-intro-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px 36px;
            display: grid;
            grid-template-columns: 1fr 280px;
            gap: 32px;
            align-items: center;
            transition: all var(--transition-base);
        }
        .brand-intro-card:hover {
            border-color: rgba(0, 188, 212, 0.25);
        }
        .brand-intro-card .brand-text h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
            letter-spacing: -0.3px;
        }
        .brand-intro-card .brand-text p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 12px;
        }
        .brand-intro-card .brand-text p:last-child {
            margin-bottom: 0;
        }
        .brand-intro-card .brand-img {
            height: 200px;
            border-radius: var(--radius-md);
            overflow: hidden;
            position: relative;
        }
        .brand-intro-card .brand-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        @media (max-width: 768px) {
            .brand-intro-card {
                grid-template-columns: 1fr;
                padding: 22px 20px;
                gap: 20px;
            }
            .brand-intro-card .brand-img {
                height: 160px;
            }
            .brand-intro-card .brand-text h2 {
                font-size: 20px;
            }
            .brand-intro-card .brand-text p {
                font-size: 14px;
            }
        }

        /* ===== 平台保障 ===== */
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .guarantee-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 24px 22px;
            transition: all var(--transition-base);
            text-align: center;
        }
        .guarantee-card:hover {
            border-color: rgba(0, 188, 212, 0.3);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .guarantee-card .guarantee-icon {
            width: 52px;
            height: 52px;
            margin: 0 auto 14px;
            border-radius: 50%;
            background: rgba(0, 230, 118, 0.1);
            border: 1px solid rgba(0, 230, 118, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--brand-green);
        }
        .guarantee-card h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .guarantee-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        @media (max-width: 1024px) {
            .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 640px) {
            .guarantee-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 快速解答 ===== */
        .quick-answers {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }
        .quick-answer-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 20px 22px;
            transition: all var(--transition-base);
            cursor: pointer;
        }
        .quick-answer-card:hover {
            border-color: rgba(0, 188, 212, 0.3);
            background: var(--bg-card-hover);
            transform: translateY(-3px);
        }
        .quick-answer-card .qa-scene {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .quick-answer-card .qa-answer {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .quick-answers {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 专题/场景卡 ===== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .scenario-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .scenario-card:hover {
            border-color: rgba(0, 188, 212, 0.3);
            box-shadow: var(--shadow-card);
            transform: translateY(-4px);
        }
        .scenario-card .scenario-img {
            height: 120px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .scenario-card .scenario-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .scenario-card .scenario-body {
            padding: 14px 16px;
        }
        .scenario-card .scenario-body h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
        }
        .scenario-card .scenario-body p {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.55;
        }
        @media (max-width: 1024px) {
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .scenario-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 榜单 ===== */
        .rank-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 14px 20px;
            transition: all var(--transition-base);
        }
        .rank-item:hover {
            border-color: rgba(0, 188, 212, 0.3);
            transform: translateX(4px);
        }
        .rank-item .rank-number {
            font-size: 20px;
            font-weight: 800;
            background: var(--brand-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            min-width: 32px;
            text-align: center;
        }
        .rank-item .rank-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            flex: 1;
        }
        .rank-item .rank-value {
            font-size: 14px;
            font-weight: 600;
            color: var(--brand-cyan);
        }
        @media (max-width: 640px) {
            .rank-item {
                padding: 12px 14px;
                gap: 10px;
            }
            .rank-item .rank-number {
                font-size: 16px;
                min-width: 24px;
            }
            .rank-item .rank-name {
                font-size: 14px;
            }
            .rank-item .rank-value {
                font-size: 12px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item.active {
            border-color: rgba(0, 188, 212, 0.35);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 18px 22px;
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            transition: all var(--transition-base);
        }
        .faq-question:hover {
            color: var(--brand-green);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            font-size: 16px;
            color: var(--brand-cyan);
            transition: transform var(--transition-base);
        }
        .faq-item.active .faq-question .faq-icon {
            transform: rotate(45deg);
            color: var(--brand-green);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 22px;
        }
        .faq-item.active .faq-answer {
            max-height: 240px;
            padding: 0 22px 20px;
        }
        .faq-answer p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
        }
        @media (max-width: 640px) {
            .faq-question {
                padding: 14px 16px;
                font-size: 14px;
            }
            .faq-answer {
                padding: 0 16px;
            }
            .faq-item.active .faq-answer {
                padding: 0 16px 16px;
            }
        }

        /* ===== 表单 ===== */
        .form-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .form-card .form-top {
            height: 4px;
            background: var(--brand-gradient);
        }
        .form-card .form-body {
            padding: 32px 36px;
        }
        .form-card .form-body h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            letter-spacing: -0.3px;
        }
        .form-card .form-body .form-desc {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 24px;
            line-height: 1.7;
        }
        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .form-group.full {
            grid-column: span 2;
        }
        .form-group label {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-primary);
        }
        .form-group input,
        .form-group select,
        .form-group textarea {
            background: var(--bg-primary);
            border: 1px solid var(--border-medium);
            border-radius: 10px;
            padding: 11px 14px;
            color: var(--text-primary);
            font-size: 14px;
            transition: all var(--transition-base);
            outline: none;
        }
        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: var(--text-muted);
        }
        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            border-color: var(--brand-cyan);
            box-shadow: 0 0 0 3px rgba(0, 188, 212, 0.15);
        }
        .form-group select {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23677586' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 12px center;
            padding-right: 36px;
        }
        .form-privacy {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 16px;
            line-height: 1.6;
        }
        @media (max-width: 640px) {
            .form-card .form-body {
                padding: 20px 18px;
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
            .form-group.full {
                grid-column: span 1;
            }
            .form-card .form-body h3 {
                font-size: 18px;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #080B0F;
            border-top: 1px solid var(--border-subtle);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        .footer-brand .footer-logo {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }
        .footer-brand .footer-logo .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--brand-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--bg-primary);
            font-size: 16px;
            font-weight: 900;
        }
        .footer-brand p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a {
            font-size: 13px;
            color: var(--text-secondary);
            transition: color var(--transition-base);
        }
        .footer-col ul li a:hover {
            color: var(--brand-green);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding: 18px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
        }
        .footer-bottom .copyright {
            font-size: 12px;
            color: var(--text-muted);
        }
        .footer-bottom .footer-links {
            display: flex;
            gap: 16px;
            font-size: 12px;
        }
        .footer-bottom .footer-links a {
            color: var(--text-muted);
            transition: color var(--transition-base);
        }
        .footer-bottom .footer-links a:hover {
            color: var(--brand-green);
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
                padding-bottom: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .site-footer {
                padding: 36px 0 0;
            }
        }

        /* ===== 斜切装饰带 ===== */
        .slash-band {
            position: relative;
            overflow: hidden;
        }
        .slash-band::before {
            content: '';
            position: absolute;
            top: 0;
            left: -5%;
            width: 110%;
            height: 100%;
            background: var(--brand-gradient);
            opacity: 0.05;
            transform: skewY(-2deg);
            pointer-events: none;
        }

        /* ===== 游戏接入卡 ===== */
        .game-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .game-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 20px 18px;
            text-align: center;
            transition: all var(--transition-base);
        }
        .game-card:hover {
            border-color: rgba(0, 188, 212, 0.35);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
        }
        .game-card .game-icon {
            font-size: 32px;
            color: var(--brand-cyan);
            margin-bottom: 10px;
        }
        .game-card h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
        }
        .game-card p {
            font-size: 12px;
            color: var(--text-muted);
        }
        @media (max-width: 1024px) {
            .game-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .game-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .game-card {
                padding: 14px 12px;
            }
            .game-card .game-icon {
                font-size: 26px;
            }
        }

        /* 通用图片占位 */
        .img-slot {
            background: var(--bg-secondary);
            position: relative;
            overflow: hidden;
        }
        .img-slot::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(0, 230, 118, 0.06), rgba(0, 188, 212, 0.06));
            z-index: 1;
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0B0F14;
            --bg-secondary: #131A22;
            --bg-card: #131A22;
            --bg-card-hover: #18222E;
            --brand-green: #00E676;
            --brand-cyan: #00BCD4;
            --brand-gradient: linear-gradient(135deg, #00E676 0%, #00BCD4 100%);
            --accent-orange: #FF5722;
            --aux-cyan: #4DD0E1;
            --text-primary: #F2F4F8;
            --text-secondary: #AAB3C0;
            --text-muted: #677586;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-medium: rgba(255, 255, 255, 0.14);
            --border-cyan: rgba(0, 188, 212, 0.5);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 16px 40px rgba(0, 0, 0, 0.5);
            --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-bounce: 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
        }

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

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            font-size: 15px;
            overflow-x: hidden;
            min-height: 100vh;
        }

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

        a:hover {
            color: var(--brand-green);
        }

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

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

        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .container-custom {
            padding: 0 16px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(11, 15, 20, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            background: rgba(11, 15, 20, 0.98);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 20px;
            color: var(--text-primary);
            white-space: nowrap;
            letter-spacing: -0.5px;
        }

        .nav-logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--brand-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--bg-primary);
            font-size: 18px;
            font-weight: 900;
            flex-shrink: 0;
        }

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

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 14px;
            padding: 8px 2px;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition-base);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--brand-gradient);
            border-radius: 2px;
            transition: width var(--transition-base);
        }

        .nav-links a:hover {
            color: var(--text-primary);
        }

        .nav-links a:hover::after {
            width: 100%;
        }

        .nav-links a.active {
            color: var(--brand-green);
        }

        .nav-links a.active::after {
            width: 100%;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 22px;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
            transition: background var(--transition-base);
        }

        .nav-toggle:hover {
            background: var(--border-subtle);
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 12px 16px 20px;
            border-top: 1px solid var(--border-subtle);
            background: var(--bg-primary);
        }

        .mobile-menu a {
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 15px;
            padding: 12px 12px;
            border-radius: 10px;
            transition: all var(--transition-base);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: var(--bg-secondary);
            color: var(--brand-green);
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-bar {
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border-subtle);
            padding: 10px 0;
        }

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

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

        .breadcrumb-content a:hover {
            color: var(--brand-green);
        }

        .breadcrumb-content .sep {
            color: var(--text-muted);
            font-size: 11px;
        }

        .breadcrumb-content .current {
            color: var(--brand-green);
            font-weight: 600;
        }

        .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-secondary);
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 6px;
            transition: all var(--transition-base);
            font-weight: 500;
        }

        .btn-back:hover {
            color: var(--brand-cyan);
            background: var(--border-subtle);
        }

        /* ===== 分类首屏 ===== */
        .category-hero {
            padding: 40px 0 32px;
            background: var(--bg-primary);
            border-bottom: 1px solid var(--border-subtle);
            position: relative;
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--brand-gradient);
            z-index: 1;
        }

        .category-hero-grid {
            display: flex;
            align-items: center;
            gap: 32px;
            position: relative;
            z-index: 2;
        }

        .category-hero-text {
            flex: 1;
            min-width: 0;
        }

        .category-hero-text h1 {
            font-size: 36px;
            font-weight: 900;
            line-height: 1.25;
            letter-spacing: -1px;
            margin: 0 0 12px;
            color: var(--text-primary);
        }

        .category-hero-text h1 .highlight {
            background: var(--brand-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .category-hero-text .subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.75;
            max-width: 560px;
            margin: 0;
        }

        .category-hero-image {
            flex-shrink: 0;
            width: 260px;
            height: 180px;
            border-radius: var(--radius-md);
            overflow: hidden;
            position: relative;
            background: var(--bg-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-subtle);
        }

        .category-hero-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .category-hero-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(0, 230, 118, 0.12) 0%, rgba(0, 188, 212, 0.08) 100%);
            pointer-events: none;
        }

        /* ===== 板块样式 ===== */
        .section-block {
            padding: 56px 0;
        }

        .section-block.alt-bg {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

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

        .section-header h2 {
            font-size: 28px;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin: 0 0 8px;
            color: var(--text-primary);
            line-height: 1.3;
        }

        .section-header h2 .highlight {
            background: var(--brand-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .section-header p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
            max-width: 680px;
        }

        /* ===== 分类说明 ===== */
        .category-desc {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 24px 28px;
            position: relative;
            overflow: hidden;
        }

        .category-desc::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--brand-gradient);
        }

        .category-desc p {
            font-size: 15px;
            line-height: 1.85;
            color: var(--text-secondary);
            margin: 0;
        }

        /* ===== 攻略列表卡片 ===== */
        .guide-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .guide-card {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 20px;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .guide-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 3px;
            height: 100%;
            background: var(--brand-gradient);
            opacity: 0;
            transition: opacity var(--transition-base);
        }

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

        .guide-card:hover::before {
            opacity: 1;
        }

        .guide-thumb {
            width: 140px;
            height: 100px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
        }

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

        .guide-content {
            flex: 1;
            min-width: 0;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .guide-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 8px;
            flex-wrap: wrap;
        }

        .guide-tag {
            display: inline-block;
            padding: 2px 10px;
            border-radius: 6px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(0, 230, 118, 0.1);
            color: var(--brand-green);
            border: 1px solid rgba(0, 230, 118, 0.25);
        }

        .guide-tag.orange {
            background: rgba(255, 87, 34, 0.1);
            color: var(--accent-orange);
            border-color: rgba(255, 87, 34, 0.25);
        }

        .guide-tag.cyan {
            background: rgba(0, 188, 212, 0.1);
            color: var(--brand-cyan);
            border-color: rgba(0, 188, 212, 0.25);
        }

        .guide-date {
            font-size: 12px;
            color: var(--text-muted);
        }

        .guide-title {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.45;
            margin: 0 0 6px;
            color: var(--text-primary);
        }

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

        .guide-title a:hover {
            color: var(--brand-green);
        }

        .guide-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0 0 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .btn-read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--brand-cyan);
            transition: all var(--transition-base);
            align-self: flex-start;
        }

        .btn-read-more:hover {
            color: var(--brand-green);
            gap: 10px;
        }

        .btn-view-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 600;
            color: var(--brand-cyan);
            border: 1px solid var(--border-cyan);
            background: transparent;
            transition: all var(--transition-base);
            cursor: pointer;
        }

        .btn-view-more:hover {
            background: rgba(0, 188, 212, 0.08);
            border-color: var(--brand-cyan);
            color: var(--brand-green);
        }

        /* ===== 热门话题卡片 ===== */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .topic-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 20px;
            transition: all var(--transition-base);
            cursor: pointer;
        }

        .topic-card:hover {
            border-color: var(--border-cyan);
            box-shadow: var(--shadow-card);
            transform: translateY(-3px);
        }

        .topic-card .topic-number {
            font-size: 28px;
            font-weight: 900;
            background: var(--brand-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            margin-bottom: 8px;
            display: block;
        }

        .topic-card h3 {
            font-size: 15px;
            font-weight: 700;
            margin: 0 0 6px;
            color: var(--text-primary);
            line-height: 1.4;
        }

        .topic-card p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

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

        .stat-badge {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            text-align: center;
            position: relative;
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .stat-badge::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--brand-gradient);
            opacity: 0.7;
        }

        .stat-badge:hover {
            border-color: var(--border-cyan);
            box-shadow: var(--shadow-card);
        }

        .stat-value {
            font-size: 32px;
            font-weight: 900;
            background: var(--brand-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            display: block;
            line-height: 1.2;
        }

        .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 6px;
            font-weight: 500;
        }

        .stat-note {
            font-size: 11px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ===== 操作指南步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            position: relative;
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .step-card:hover {
            border-color: var(--border-cyan);
            box-shadow: var(--shadow-card);
        }

        .step-card .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--brand-gradient);
            color: var(--bg-primary);
            font-weight: 900;
            font-size: 16px;
            margin-bottom: 12px;
        }

        .step-card h3 {
            font-size: 16px;
            font-weight: 700;
            margin: 0 0 8px;
            color: var(--text-primary);
            line-height: 1.4;
        }

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

        /* ===== FAQ ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

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

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 16px 20px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: all var(--transition-base);
        }

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

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 6px;
            background: var(--border-subtle);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            transition: all var(--transition-base);
            font-size: 12px;
        }

        .faq-item.open .faq-icon {
            background: var(--brand-gradient);
            color: var(--bg-primary);
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        .faq-answer-inner {
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        /* ===== CTA小条 ===== */
        .cta-strip {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            position: relative;
            overflow: hidden;
        }

        .cta-strip::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--brand-gradient);
        }

        .cta-strip-text h3 {
            font-size: 20px;
            font-weight: 800;
            margin: 0 0 6px;
            color: var(--text-primary);
        }

        .cta-strip-text p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        .btn-primary-grad {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 12px;
            background: var(--brand-gradient);
            color: var(--bg-primary);
            font-weight: 700;
            font-size: 14px;
            border: none;
            cursor: pointer;
            transition: all var(--transition-base);
        }

        .btn-primary-grad:hover {
            filter: brightness(1.08);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 230, 118, 0.25);
            color: var(--bg-primary);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #080C12;
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 24px;
            margin-top: 0;
        }

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

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 18px;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .footer-logo .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--brand-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--bg-primary);
            font-size: 16px;
            font-weight: 900;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 12px;
            letter-spacing: 0.3px;
        }

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

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

        .footer-col ul a:hover {
            color: var(--brand-green);
        }

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

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

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

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

        .footer-links a:hover {
            color: var(--brand-green);
        }

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

        @media (max-width: 768px) {
            .nav-wrapper {
                height: 60px;
            }
            .nav-links {
                display: none;
            }
            .nav-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .mobile-menu.open {
                display: flex;
            }
            .category-hero {
                padding: 24px 0 20px;
            }
            .category-hero-grid {
                flex-direction: column;
                gap: 16px;
            }
            .category-hero-text h1 {
                font-size: 26px;
            }
            .category-hero-image {
                width: 100%;
                height: 140px;
            }
            .section-block {
                padding: 36px 0;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .guide-card {
                flex-direction: column;
                gap: 12px;
                padding: 16px;
            }
            .guide-thumb {
                width: 100%;
                height: 140px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .cta-strip {
                padding: 20px;
                flex-direction: column;
                text-align: center;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .breadcrumb-content {
                font-size: 12px;
                gap: 6px;
            }
            .btn-back {
                font-size: 12px;
            }
        }

        @media (max-width: 520px) {
            .topic-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .category-hero-text h1 {
                font-size: 22px;
            }
            .guide-summary {
                -webkit-line-clamp: 3;
            }
        }

        @media (min-width: 641px) {
            .container-custom {
                padding: 0 24px;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #0B0F14;
            --bg-secondary: #131A22;
            --bg-card: #131A22;
            --bg-card-hover: #18222E;
            --brand-green: #00E676;
            --brand-cyan: #00BCD4;
            --brand-gradient: linear-gradient(135deg, #00E676 0%, #00BCD4 100%);
            --accent-orange: #FF5722;
            --aux-cyan: #4DD0E1;
            --text-primary: #F2F4F8;
            --text-secondary: #AAB3C0;
            --text-muted: #677586;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-medium: rgba(255, 255, 255, 0.14);
            --border-cyan: rgba(0, 188, 212, 0.5);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 16px 40px rgba(0, 0, 0, 0.5);
            --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-bounce: 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
        }

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

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            font-size: 15px;
            overflow-x: hidden;
            min-height: 100vh;
            margin: 0;
        }

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

        a:hover {
            color: var(--brand-green);
        }

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

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

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

        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 640px) {
            .container-custom {
                padding: 0 16px;
            }
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(11, 15, 20, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            background: rgba(11, 15, 20, 0.98);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 20px;
            color: var(--text-primary);
            white-space: nowrap;
            letter-spacing: -0.5px;
        }

        .nav-logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--brand-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--bg-primary);
            font-size: 18px;
            font-weight: 900;
            flex-shrink: 0;
        }

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

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links li {
            list-style: none;
        }

        .nav-links a {
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 14px;
            padding: 8px 2px;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition-base);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--brand-gradient);
            border-radius: 2px;
            transition: width var(--transition-base);
        }

        .nav-links a:hover {
            color: var(--text-primary);
        }

        .nav-links a:hover::after {
            width: 100%;
        }

        .nav-links a.active {
            color: var(--brand-green);
        }

        .nav-links a.active::after {
            width: 100%;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 22px;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
            transition: background var(--transition-base);
        }

        .nav-toggle:hover {
            background: var(--border-subtle);
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 12px 16px 20px;
            border-top: 1px solid var(--border-subtle);
            background: var(--bg-primary);
        }

        .mobile-menu a {
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 15px;
            padding: 12px 12px;
            border-radius: 10px;
            transition: all var(--transition-base);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: var(--bg-secondary);
            color: var(--brand-green);
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-bar {
            background: var(--bg-primary);
            border-bottom: 1px solid var(--border-subtle);
            padding: 14px 0;
            position: relative;
        }

        .breadcrumb-inner {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 13px;
        }

        .breadcrumb-back {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--text-muted);
            font-size: 13px;
            font-weight: 500;
            margin-right: 12px;
            padding: 4px 10px;
            border-radius: 6px;
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-base);
            background: transparent;
            cursor: pointer;
        }

        .breadcrumb-back:hover {
            color: var(--brand-cyan);
            border-color: var(--border-cyan);
            background: rgba(0, 188, 212, 0.05);
        }

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

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

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

        .breadcrumb-current {
            color: var(--text-primary);
            font-weight: 600;
            pointer-events: none;
        }

        /* ===== 分类首屏 ===== */
        .category-hero {
            padding: 40px 0 32px;
            background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
            border-bottom: 1px solid var(--border-subtle);
            position: relative;
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--brand-gradient);
            z-index: 2;
        }

        .category-hero-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 32px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .category-hero-tag {
            display: inline-block;
            background: rgba(0, 230, 118, 0.1);
            color: var(--brand-green);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 6px;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }

        .category-hero h1 {
            font-size: clamp(28px, 4vw, 40px);
            font-weight: 900;
            line-height: 1.25;
            margin: 0 0 12px;
            letter-spacing: -0.5px;
            color: var(--text-primary);
        }

        .category-hero h1 .gradient-text {
            background: var(--brand-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .category-hero-desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 560px;
            margin: 0;
        }

        .category-hero-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-subtle);
            aspect-ratio: 16/10;
            background: var(--bg-secondary);
            min-height: 220px;
        }

        .category-hero-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* ===== 板块通用 ===== */
        .section-block {
            padding: 56px 0;
        }

        .section-block.alt-bg {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

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

        .section-header h2 {
            font-size: clamp(24px, 3vw, 30px);
            font-weight: 800;
            line-height: 1.3;
            margin: 0 0 8px;
            color: var(--text-primary);
            letter-spacing: -0.3px;
        }

        .section-header p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin: 0;
            max-width: 640px;
        }

        .section-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 1px;
            text-transform: uppercase;
            color: var(--brand-cyan);
            margin-bottom: 8px;
        }

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

        .content-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(0, 188, 212, 0.3);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .content-card-img {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: #1a232d;
            position: relative;
        }

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

        .content-card:hover .content-card-img img {
            transform: scale(1.04);
        }

        .content-card-body {
            padding: 20px 22px;
        }

        .content-card-date {
            font-size: 12px;
            color: var(--text-muted);
            font-weight: 500;
            letter-spacing: 0.3px;
        }

        .content-card-title {
            font-size: 16px;
            font-weight: 700;
            line-height: 1.45;
            margin: 6px 0 8px;
            color: var(--text-primary);
        }

        .content-card-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0 0 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .content-card-tag {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 6px;
            background: rgba(0, 188, 212, 0.1);
            color: var(--brand-cyan);
            margin-right: 8px;
        }

        /* ===== 列表卡片 ===== */
        .list-item-card {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 20px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            margin-bottom: 16px;
        }

        .list-item-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(0, 188, 212, 0.25);
            box-shadow: var(--shadow-card-hover);
        }

        .list-item-thumb {
            width: 180px;
            min-width: 180px;
            border-radius: var(--radius-md);
            overflow: hidden;
            aspect-ratio: 16/10;
            background: #1a232d;
        }

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

        .list-item-content {
            flex: 1;
            min-width: 0;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .list-item-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            margin-bottom: 6px;
        }

        .list-item-title {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.4;
            margin: 0 0 8px;
            color: var(--text-primary);
        }

        .list-item-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
            flex: 1;
        }

        /* ===== 按钮 ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--brand-gradient);
            color: var(--bg-primary);
            font-weight: 700;
            font-size: 14px;
            padding: 12px 24px;
            border-radius: 12px;
            border: none;
            cursor: pointer;
            transition: all var(--transition-base);
            text-decoration: none;
        }

        .btn-primary:hover {
            filter: brightness(1.1);
            transform: translateY(-2px);
            color: var(--bg-primary);
            box-shadow: 0 8px 24px rgba(0, 230, 118, 0.3);
        }

        .btn-primary:focus-visible {
            outline: 3px solid rgba(0, 230, 118, 0.6);
            outline-offset: 2px;
        }

        .btn-primary:active {
            transform: translateY(0);
            filter: brightness(0.95);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: transparent;
            color: var(--brand-cyan);
            font-weight: 600;
            font-size: 13px;
            padding: 8px 16px;
            border-radius: 10px;
            border: 1px solid rgba(0, 188, 212, 0.4);
            cursor: pointer;
            transition: all var(--transition-base);
            text-decoration: none;
        }

        .btn-secondary:hover {
            border-color: var(--brand-cyan);
            background: rgba(0, 188, 212, 0.08);
            color: var(--brand-green);
        }

        .btn-secondary:focus-visible {
            outline: 3px solid rgba(0, 230, 118, 0.5);
            outline-offset: 2px;
        }

        .btn-link-arrow {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            color: var(--brand-cyan);
            font-size: 13px;
            font-weight: 600;
            cursor: pointer;
            background: none;
            border: none;
            padding: 0;
            transition: color var(--transition-base);
            text-decoration: none;
        }

        .btn-link-arrow:hover {
            color: var(--brand-green);
            text-decoration: underline;
        }

        /* ===== 数据徽章 ===== */
        .stat-badge-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 24px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .stat-badge-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--brand-gradient);
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        }

        .stat-badge-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(0, 188, 212, 0.3);
            transform: translateY(-3px);
        }

        .stat-badge-number {
            font-size: clamp(28px, 3vw, 36px);
            font-weight: 900;
            background: var(--brand-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }

        .stat-badge-label {
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 500;
            margin-top: 6px;
        }

        .stat-badge-note {
            font-size: 11px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ===== 焦点卡 ===== */
        .focus-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 20px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            cursor: pointer;
        }

        .focus-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(0, 188, 212, 0.3);
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
        }

        .focus-card-img {
            border-radius: var(--radius-md);
            overflow: hidden;
            aspect-ratio: 16/9;
            background: #1a232d;
            margin-bottom: 14px;
        }

        .focus-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .focus-card-title {
            font-size: 15px;
            font-weight: 700;
            line-height: 1.45;
            margin: 0 0 6px;
            color: var(--text-primary);
        }

        .focus-card-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin: 0;
        }

        /* ===== 指南卡 ===== */
        .guide-step-card {
            display: flex;
            gap: 16px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 22px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
        }

        .guide-step-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(0, 188, 212, 0.25);
        }

        .guide-step-num {
            width: 44px;
            height: 44px;
            min-width: 44px;
            border-radius: 12px;
            background: var(--brand-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--bg-primary);
            font-weight: 900;
            font-size: 18px;
        }

        .guide-step-title {
            font-size: 15px;
            font-weight: 700;
            margin: 0 0 6px;
            color: var(--text-primary);
        }

        .guide-step-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 720px;
            margin: 0 auto;
        }

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

        .faq-item:hover {
            border-color: rgba(0, 188, 212, 0.25);
        }

        .faq-item.open {
            border-color: rgba(0, 188, 212, 0.5);
            box-shadow: var(--shadow-card);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 18px 20px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: color var(--transition-base);
        }

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

        .faq-icon {
            width: 22px;
            height: 22px;
            min-width: 22px;
            border-radius: 6px;
            background: var(--brand-gradient);
            color: var(--bg-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 900;
            transition: transform var(--transition-base);
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease;
            padding: 0 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 20px 18px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin: 0;
        }

        /* ===== CTA 横幅 ===== */
        .cta-mini-banner {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .cta-mini-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--brand-gradient);
        }

        .cta-mini-banner h3 {
            font-size: 18px;
            font-weight: 700;
            margin: 0 0 6px;
            color: var(--text-primary);
        }

        .cta-mini-banner p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #080b0f;
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 24px;
            margin-top: 48px;
        }

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

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 20px;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .footer-logo .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--brand-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--bg-primary);
            font-size: 15px;
            flex-shrink: 0;
        }

        .footer-brand p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 14px;
            letter-spacing: 0.3px;
        }

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

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

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

        .footer-col a:hover {
            color: var(--brand-cyan);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding-top: 20px;
            border-top: 1px solid var(--border-subtle);
            font-size: 13px;
            color: var(--text-muted);
        }

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

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

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

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .category-hero-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .category-hero-img {
                min-height: 200px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .list-item-card {
                flex-direction: column;
            }
            .list-item-thumb {
                width: 100%;
                min-width: auto;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-toggle {
                display: block;
            }
            .mobile-menu.show {
                display: flex;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .cta-mini-banner {
                flex-direction: column;
                text-align: center;
                align-items: center;
            }
            .section-block {
                padding: 40px 0;
            }
            .category-hero {
                padding: 28px 0 24px;
            }
            .breadcrumb-inner {
                font-size: 12px;
            }
        }

        @media (max-width: 640px) {
            .nav-wrapper {
                height: 60px;
            }
            .nav-logo {
                font-size: 17px;
            }
            .nav-logo .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 15px;
            }
            .category-hero h1 {
                font-size: 26px;
            }
            .stat-badge-number {
                font-size: 26px;
            }
            .content-card-body {
                padding: 16px 18px;
            }
            .list-item-card {
                padding: 16px;
            }
            .guide-step-card {
                flex-direction: column;
                align-items: flex-start;
            }
            .breadcrumb-back {
                font-size: 12px;
                padding: 3px 8px;
            }
        }

        /* ===== 高亮对比卡 ===== */
        .highlight-card {
            border-color: rgba(0, 230, 118, 0.4);
            background: rgba(0, 230, 118, 0.03);
        }

        .highlight-card::before {
            background: var(--brand-gradient);
        }

        /* ===== 查看更多区块 ===== */
        .view-more-row {
            text-align: center;
            margin-top: 20px;
        }

/* roulang page: category3 */
:root {
            --bg-primary: #0B0F14;
            --bg-secondary: #131A22;
            --bg-card: #131A22;
            --bg-card-hover: #18222E;
            --brand-green: #00E676;
            --brand-cyan: #00BCD4;
            --brand-gradient: linear-gradient(135deg, #00E676 0%, #00BCD4 100%);
            --accent-orange: #FF5722;
            --aux-cyan: #4DD0E1;
            --text-primary: #F2F4F8;
            --text-secondary: #AAB3C0;
            --text-muted: #677586;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-medium: rgba(255, 255, 255, 0.14);
            --border-cyan: rgba(0, 188, 212, 0.5);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 16px 40px rgba(0, 0, 0, 0.5);
            --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-bounce: 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
        }

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

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            font-size: 15px;
            overflow-x: hidden;
            min-height: 100vh;
        }

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

        a:hover {
            color: var(--brand-green);
        }

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

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

        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 640px) {
            .container-custom {
                padding: 0 16px;
            }
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(11, 15, 20, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            background: rgba(11, 15, 20, 0.98);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 20px;
            color: var(--text-primary);
            white-space: nowrap;
            letter-spacing: -0.5px;
        }

        .nav-logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--brand-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--bg-primary);
            font-size: 18px;
            font-weight: 900;
            flex-shrink: 0;
        }

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

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 14px;
            padding: 8px 2px;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition-base);
            border-bottom: 2px solid transparent;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--brand-gradient);
            border-radius: 2px;
            transition: width var(--transition-base);
        }

        .nav-links a:hover {
            color: var(--text-primary);
        }

        .nav-links a:hover::after {
            width: 100%;
        }

        .nav-links a.active {
            color: var(--brand-green);
        }

        .nav-links a.active::after {
            width: 100%;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 22px;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
            transition: background var(--transition-base);
        }

        .nav-toggle:hover {
            background: var(--border-subtle);
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 12px 16px 20px;
            border-top: 1px solid var(--border-subtle);
            background: var(--bg-primary);
        }

        .mobile-menu a {
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 15px;
            padding: 12px 12px;
            border-radius: 10px;
            transition: all var(--transition-base);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: var(--bg-secondary);
            color: var(--brand-green);
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }

            .nav-toggle {
                display: block;
            }

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

        /* ===== 面包屑 ===== */
        .breadcrumb-section {
            background: var(--bg-primary);
            border-bottom: 1px solid var(--border-subtle);
            padding: 12px 0;
        }

        .breadcrumb-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }

        .breadcrumb-back {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--text-secondary);
            font-size: 13px;
            font-weight: 500;
            padding: 6px 12px;
            border-radius: 8px;
            border: 1px solid var(--border-subtle);
            background: transparent;
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .breadcrumb-back:hover {
            color: var(--brand-cyan);
            border-color: var(--border-cyan);
            background: rgba(0, 188, 212, 0.06);
        }

        .breadcrumb-path {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

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

        .breadcrumb-path a:hover {
            color: var(--brand-green);
        }

        .breadcrumb-path .separator {
            color: var(--text-muted);
            flex-shrink: 0;
        }

        .breadcrumb-path .current {
            color: var(--brand-green);
            font-weight: 500;
        }

        @media (max-width: 520px) {
            .breadcrumb-back span {
                display: none;
            }

            .breadcrumb-back::after {
                content: '返回';
            }

            .breadcrumb-path {
                font-size: 12px;
            }
        }

        /* ===== 分类首屏 ===== */
        .category-hero {
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border-subtle);
            padding: 40px 0;
            position: relative;
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--brand-gradient);
            z-index: 1;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 360px;
            height: 360px;
            background: radial-gradient(circle, rgba(0, 188, 212, 0.12) 0%, transparent 70%);
            pointer-events: none;
            z-index: 0;
        }

        .category-hero-content {
            display: flex;
            align-items: center;
            gap: 32px;
            position: relative;
            z-index: 1;
        }

        .category-hero-text {
            flex: 1 1 auto;
            min-width: 0;
        }

        .category-hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            color: var(--brand-green);
            background: rgba(0, 230, 118, 0.1);
            border: 1px solid rgba(0, 230, 118, 0.3);
            border-radius: 999px;
            padding: 4px 12px;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }

        .category-hero h1 {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
            margin: 0 0 10px;
            color: var(--text-primary);
            letter-spacing: -0.5px;
        }

        .category-hero h1 .highlight {
            background: var(--brand-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
        }

        .category-hero-sub {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 560px;
            line-height: 1.8;
            margin: 0;
        }

        .category-hero-visual {
            flex-shrink: 0;
            width: 280px;
            height: 200px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-medium);
            box-shadow: var(--shadow-card);
            position: relative;
            display: none;
        }

        .category-hero-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: relative;
            z-index: 1;
        }

        .category-hero-visual::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60%;
            background: linear-gradient(180deg, transparent 0%, rgba(11, 15, 20, 0.7) 100%);
            z-index: 2;
            pointer-events: none;
        }

        .category-hero-visual .hero-visual-label {
            position: absolute;
            bottom: 12px;
            left: 14px;
            z-index: 3;
            color: var(--text-primary);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.6);
        }

        @media (min-width: 900px) {
            .category-hero-visual {
                display: block;
            }
        }

        @media (max-width: 640px) {
            .category-hero {
                padding: 28px 0;
            }

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

            .category-hero-sub {
                font-size: 14px;
            }
        }

        /* ===== 板块标题通用 ===== */
        .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.4px;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .section-sub {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 28px;
            max-width: 680px;
        }

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

        @media (max-width: 640px) {
            .section-title {
                font-size: 22px;
            }

            .section-sub {
                font-size: 14px;
            }
        }

        /* ===== 分类说明块 ===== */
        .category-intro {
            padding: 48px 0 0;
        }

        .intro-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px 32px;
            box-shadow: var(--shadow-card);
            border-left: 3px solid transparent;
            background-image: linear-gradient(var(--bg-card), var(--bg-card)), var(--brand-gradient);
            background-origin: padding-box, border-box;
            background-clip: padding-box, border-box;
            border-left: 3px solid;
            border-image: var(--brand-gradient) 1;
            border-image-slice: 1;
        }

        .intro-card p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.9;
            margin: 0;
        }

        .intro-card p strong {
            color: var(--text-primary);
            font-weight: 600;
        }

        .intro-card p .accent {
            color: var(--brand-green);
            font-weight: 500;
        }

        @media (max-width: 640px) {
            .intro-card {
                padding: 20px 18px;
            }

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

        /* ===== 列表卡片主体 ===== */
        .team-list {
            padding: 48px 0 0;
        }

        .team-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .team-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            position: relative;
            display: flex;
            flex-direction: column;
        }

        .team-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-cyan);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .team-card-media {
            height: 180px;
            overflow: hidden;
            position: relative;
            flex-shrink: 0;
            background: var(--bg-secondary);
        }

        .team-card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-base);
        }

        .team-card:hover .team-card-media img {
            transform: scale(1.04);
        }

        .team-card-media::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 50%;
            background: linear-gradient(180deg, transparent 0%, rgba(11, 15, 20, 0.6) 100%);
            pointer-events: none;
        }

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

        .team-card-tags {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 10px;
            flex-wrap: wrap;
        }

        .team-tag {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 999px;
            color: var(--brand-cyan);
            background: rgba(0, 188, 212, 0.1);
            border: 1px solid rgba(0, 188, 212, 0.25);
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        .team-tag.hot {
            color: var(--accent-orange);
            background: rgba(255, 87, 34, 0.1);
            border-color: rgba(255, 87, 34, 0.35);
        }

        .team-card-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.45;
            margin: 0 0 8px;
            letter-spacing: -0.2px;
            transition: color var(--transition-base);
        }

        .team-card:hover .team-card-title {
            color: var(--brand-green);
        }

        .team-card-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .team-card-date i {
            font-size: 11px;
            color: var(--aux-cyan);
        }

        .team-card-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin: 0 0 16px;
            flex-grow: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .team-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding-top: 14px;
            border-top: 1px solid var(--border-subtle);
        }

        .team-card-footer .btn-read {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--brand-cyan);
            padding: 6px 0;
            transition: all var(--transition-base);
        }

        .team-card-footer .btn-read i {
            font-size: 11px;
            transition: transform var(--transition-base);
        }

        .team-card-footer .btn-read:hover {
            color: var(--brand-green);
        }

        .team-card-footer .btn-read:hover i {
            transform: translateX(4px);
        }

        .team-card-footer .team-meta {
            font-size: 12px;
            color: var(--text-muted);
        }

        .list-more {
            margin-top: 28px;
            text-align: center;
        }

        .btn-outline-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-cyan);
            color: var(--brand-cyan);
            font-weight: 600;
            font-size: 14px;
            background: transparent;
            cursor: pointer;
            transition: all var(--transition-base);
        }

        .btn-outline-more:hover {
            background: rgba(0, 188, 212, 0.08);
            border-color: var(--brand-green);
            color: var(--brand-green);
            transform: translateY(-2px);
        }

        @media (max-width: 900px) {
            .team-grid {
                grid-template-columns: 1fr;
            }

            .team-card-media {
                height: 200px;
            }
        }

        @media (max-width: 520px) {
            .team-card-media {
                height: 160px;
            }

            .team-card-body {
                padding: 16px 16px 18px;
            }
        }

        /* ===== 热门话题/本周焦点 ===== */
        .hot-topics {
            padding: 48px 0 0;
        }

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

        .topic-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 22px 20px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .topic-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--brand-gradient);
            opacity: 0;
            transition: opacity var(--transition-base);
        }

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

        .topic-card:hover::before {
            opacity: 1;
        }

        .topic-card-index {
            font-size: 12px;
            font-weight: 700;
            color: var(--brand-green);
            letter-spacing: 0.5px;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .topic-card-index i {
            font-size: 10px;
        }

        .topic-card h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.5;
            margin: 0 0 8px;
        }

        .topic-card p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        @media (max-width: 900px) {
            .topic-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 560px) {
            .topic-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 数据榜单 ===== */
        .data-board {
            padding: 48px 0 0;
        }

        .data-board-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .data-metric-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .data-metric-card::after {
            content: '';
            position: absolute;
            bottom: -30px;
            left: 50%;
            transform: translateX(-50%);
            width: 140px;
            height: 80px;
            background: radial-gradient(ellipse, rgba(0, 230, 118, 0.08) 0%, transparent 70%);
            pointer-events: none;
            border-radius: 50%;
        }

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

        .data-metric-value {
            font-size: 30px;
            font-weight: 800;
            background: var(--brand-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
            line-height: 1.3;
            letter-spacing: -1px;
            position: relative;
            z-index: 1;
        }

        .data-metric-label {
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 500;
            margin-top: 6px;
            position: relative;
            z-index: 1;
        }

        .data-metric-note {
            font-size: 11px;
            color: var(--text-muted);
            margin-top: 4px;
            position: relative;
            z-index: 1;
        }

        @media (max-width: 900px) {
            .data-board-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 520px) {
            .data-board-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }

        /* ===== 观赛入门要点 ===== */
        .guide-section {
            padding: 48px 0 0;
        }

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

        .guide-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 26px 22px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            position: relative;
        }

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

        .guide-step {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--brand-gradient);
            color: var(--bg-primary);
            font-weight: 800;
            font-size: 16px;
            margin-bottom: 14px;
            flex-shrink: 0;
        }

        .guide-card h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin: 0 0 8px;
            line-height: 1.45;
        }

        .guide-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin: 0;
        }

        @media (max-width: 900px) {
            .guide-list {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 560px) {
            .guide-list {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 48px 0 0;
        }

        .faq-list {
            max-width: 780px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
        }

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

        .faq-item.open {
            border-color: var(--border-cyan);
            box-shadow: var(--shadow-card);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            cursor: pointer;
            user-select: none;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            transition: color var(--transition-base);
        }

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

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: var(--border-subtle);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--aux-cyan);
            transition: all var(--transition-base);
        }

        .faq-item.open .faq-icon {
            background: var(--brand-gradient);
            color: var(--bg-primary);
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease;
            padding: 0 22px;
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.8;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 22px 20px;
        }

        @media (max-width: 640px) {
            .faq-question {
                padding: 14px 16px;
                font-size: 14px;
            }

            .faq-answer {
                padding: 0 16px;
                font-size: 13px;
            }

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

        /* ===== CTA小条 ===== */
        .cta-bar {
            padding: 48px 0 28px;
        }

        .cta-bar-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-top: 3px solid;
            border-image: var(--brand-gradient) 1;
            border-image-slice: 1;
            border-radius: var(--radius-lg);
            padding: 32px 30px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }

        .cta-bar-card::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 240px;
            height: 240px;
            background: radial-gradient(circle, rgba(0, 230, 118, 0.08) 0%, transparent 65%);
            pointer-events: none;
            border-radius: 50%;
        }

        .cta-bar-text h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 6px;
            letter-spacing: -0.3px;
        }

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

        .cta-bar-form {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            position: relative;
            z-index: 1;
        }

        .cta-bar-form input {
            width: 240px;
            padding: 11px 16px;
            border-radius: var(--radius-md);
            background: var(--bg-primary);
            border: 1px solid var(--border-medium);
            color: var(--text-primary);
            font-size: 14px;
            outline: none;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .cta-bar-form input::placeholder {
            color: var(--text-muted);
        }

        .cta-bar-form input:focus {
            border-color: var(--brand-cyan);
            box-shadow: 0 0 0 3px rgba(0, 188, 212, 0.2);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 11px 22px;
            border-radius: var(--radius-md);
            background: var(--brand-gradient);
            color: var(--bg-primary);
            font-weight: 700;
            font-size: 14px;
            border: none;
            cursor: pointer;
            transition: all var(--transition-base);
            white-space: nowrap;
            letter-spacing: 0.2px;
        }

        .btn-primary:hover {
            filter: brightness(1.12);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 230, 118, 0.35);
        }

        .btn-primary:focus-visible {
            outline: 3px solid rgba(0, 230, 118, 0.6);
            outline-offset: 2px;
        }

        .btn-primary:active {
            transform: translateY(0);
            filter: brightness(0.95);
        }

        @media (max-width: 700px) {
            .cta-bar-form {
                flex-direction: column;
                width: 100%;
                align-items: stretch;
            }

            .cta-bar-form input {
                width: 100%;
            }

            .cta-bar-card {
                padding: 24px 18px;
            }
        }

        /* ===== 板块间距 ===== */
        .section-spacing {
            padding: 48px 0 0;
        }

        @media (min-width: 900px) {
            .section-spacing {
                padding: 64px 0 0;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            margin-top: 72px;
            background: #080C11;
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 24px;
        }

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

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 18px;
            color: var(--text-primary);
            margin-bottom: 14px;
        }

        .footer-logo .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--brand-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--bg-primary);
            font-size: 16px;
            font-weight: 900;
            flex-shrink: 0;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0;
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            margin: 0 0 14px;
            letter-spacing: 0.3px;
        }

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

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

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

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding-top: 20px;
            border-top: 1px solid var(--border-subtle);
        }

        .footer-bottom .copyright {
            font-size: 13px;
            color: var(--text-muted);
        }

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

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

        .footer-links a:hover {
            color: var(--brand-green);
        }

        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 560px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

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

        .text-gradient {
            background: var(--brand-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
        }

/* roulang page: category4 */
:root {
            --bg-primary: #0B0F14;
            --bg-secondary: #131A22;
            --bg-card: #131A22;
            --bg-card-hover: #18222E;
            --brand-green: #00E676;
            --brand-cyan: #00BCD4;
            --brand-gradient: linear-gradient(135deg, #00E676 0%, #00BCD4 100%);
            --accent-orange: #FF5722;
            --aux-cyan: #4DD0E1;
            --text-primary: #F2F4F8;
            --text-secondary: #AAB3C0;
            --text-muted: #677586;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-medium: rgba(255, 255, 255, 0.14);
            --border-cyan: rgba(0, 188, 212, 0.5);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 16px 40px rgba(0, 0, 0, 0.5);
            --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-bounce: 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
        }

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

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            font-size: 15px;
            overflow-x: hidden;
            min-height: 100vh;
        }

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

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

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

        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(11, 15, 20, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            background: rgba(11, 15, 20, 0.98);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 20px;
            color: var(--text-primary);
            white-space: nowrap;
            letter-spacing: -0.5px;
        }
        .nav-logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--brand-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--bg-primary);
            font-size: 18px;
            font-weight: 900;
            flex-shrink: 0;
        }
        .nav-logo:hover {
            color: var(--text-primary);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 14px;
            padding: 8px 2px;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition-base);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--brand-gradient);
            border-radius: 2px;
            transition: width var(--transition-base);
        }
        .nav-links a:hover {
            color: var(--text-primary);
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .nav-links a.active {
            color: var(--brand-green);
        }
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 22px;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
            transition: background var(--transition-base);
        }
        .nav-toggle:hover {
            background: var(--border-subtle);
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 12px 16px 20px;
            border-top: 1px solid var(--border-subtle);
            background: var(--bg-primary);
        }
        .mobile-menu a {
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 15px;
            padding: 12px 12px;
            border-radius: 10px;
            transition: all var(--transition-base);
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: var(--bg-secondary);
            color: var(--brand-green);
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-bar {
            background: var(--bg-primary);
            border-bottom: 1px solid var(--border-subtle);
            padding: 12px 0;
        }
        .breadcrumb-wrapper {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .breadcrumb-back {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--text-secondary);
            font-size: 13px;
            font-weight: 500;
            padding: 6px 12px;
            border-radius: 8px;
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-base);
            flex-shrink: 0;
        }
        .breadcrumb-back:hover {
            color: var(--brand-cyan);
            border-color: var(--border-cyan);
            background: rgba(0, 188, 212, 0.06);
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .breadcrumb-nav a {
            color: var(--text-secondary);
            transition: color var(--transition-base);
        }
        .breadcrumb-nav a:hover {
            color: var(--brand-cyan);
        }
        .breadcrumb-nav .separator {
            color: var(--text-muted);
            user-select: none;
        }
        .breadcrumb-nav .current {
            color: var(--brand-green);
            font-weight: 600;
            pointer-events: none;
        }

        /* ===== 分类首屏（紧凑横幅） ===== */
        .category-hero {
            padding: 40px 0 32px;
            background: var(--bg-primary);
            border-bottom: 1px solid var(--border-subtle);
        }
        .category-hero-inner {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .category-hero-text {
            flex: 1;
            min-width: 0;
        }
        .category-hero-text .tag-line {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 12px;
            font-weight: 600;
            color: var(--brand-cyan);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 12px;
        }
        .category-hero-text h1 {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            margin: 0 0 12px 0;
        }
        .category-hero-text h1 .gradient-text {
            background: var(--brand-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .category-hero-text p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            max-width: 600px;
            margin: 0;
        }
        .category-hero-image {
            flex-shrink: 0;
            width: 320px;
            height: 200px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-medium);
            box-shadow: var(--shadow-card);
        }
        .category-hero-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 56px 0;
        }
        .section-alt {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }
        .section-header {
            margin-bottom: 32px;
        }
        .section-header .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            color: var(--brand-cyan);
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 8px;
        }
        .section-header h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.3px;
            margin: 0 0 8px 0;
            line-height: 1.35;
        }
        .section-header p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 720px;
            margin: 0;
        }

        /* ===== 说明块 ===== */
        .category-intro-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px 32px;
            display: flex;
            gap: 24px;
            align-items: flex-start;
            box-shadow: var(--shadow-card);
        }
        .category-intro-card .intro-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--brand-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--bg-primary);
            font-size: 20px;
            flex-shrink: 0;
        }
        .category-intro-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.85;
            margin: 0;
        }

        /* ===== 列表卡片 ===== */
        .review-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .review-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .review-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(0, 188, 212, 0.35);
        }
        .review-card .card-thumb {
            width: 100%;
            height: 180px;
            overflow: hidden;
            border-bottom: 1px solid var(--border-subtle);
            position: relative;
        }
        .review-card .card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .review-card:hover .card-thumb img {
            transform: scale(1.04);
        }
        .review-card .card-thumb .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(11, 15, 20, 0.85);
            backdrop-filter: blur(8px);
            color: var(--brand-cyan);
            font-size: 11px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 6px;
            letter-spacing: 0.04em;
            border: 1px solid rgba(0, 188, 212, 0.4);
        }
        .review-card .card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .review-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .review-card .card-meta .date {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .review-card .card-title {
            font-size: 17px;
            font-weight: 650;
            color: var(--text-primary);
            line-height: 1.45;
            margin: 0 0 8px 0;
            letter-spacing: -0.2px;
        }
        .review-card .card-excerpt {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin: 0 0 16px 0;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .review-card .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }
        .btn-read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--brand-cyan);
            padding: 6px 0;
            border-bottom: 1px solid transparent;
            transition: all var(--transition-base);
        }
        .btn-read-more:hover {
            color: var(--brand-green);
            border-bottom-color: var(--brand-green);
        }
        .btn-read-more i {
            font-size: 12px;
            transition: transform var(--transition-base);
        }
        .btn-read-more:hover i {
            transform: translateX(4px);
        }

        /* ===== 支撑板块卡片 ===== */
        .support-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .support-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 22px 24px;
            box-shadow: var(--shadow-card);
            transition: border-color var(--transition-base), transform var(--transition-base);
        }
        .support-card:hover {
            border-color: var(--border-cyan);
            transform: translateY(-2px);
        }
        .support-card .support-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(0, 188, 212, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--aux-cyan);
            font-size: 18px;
            margin-bottom: 14px;
        }
        .support-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin: 0 0 8px 0;
            line-height: 1.4;
        }
        .support-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin: 0;
        }

        /* ===== 数据榜单 ===== */
        .ranking-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        .ranking-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            transition: border-color var(--transition-base);
        }
        .ranking-item:hover {
            border-color: var(--border-cyan);
        }
        .ranking-num {
            font-size: 28px;
            font-weight: 800;
            background: var(--brand-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            min-width: 40px;
            text-align: center;
            flex-shrink: 0;
        }
        .ranking-info h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin: 0 0 4px 0;
        }
        .ranking-info p {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0;
        }

        /* ===== 步骤指南 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px 24px 20px;
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }
        .step-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--brand-gradient);
        }
        .step-card .step-num {
            font-size: 13px;
            font-weight: 700;
            color: var(--brand-cyan);
            letter-spacing: 0.06em;
            margin-bottom: 10px;
            display: block;
        }
        .step-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin: 0 0 8px 0;
            line-height: 1.4;
        }
        .step-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin: 0;
        }

        /* ===== FAQ ===== */
        .faq-container {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .faq-item.active {
            border-color: var(--border-cyan);
            box-shadow: 0 4px 20px rgba(0, 188, 212, 0.08);
        }
        .faq-item .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            text-align: left;
            letter-spacing: -0.2px;
            transition: color var(--transition-base);
        }
        .faq-item .faq-question:hover {
            color: var(--brand-cyan);
        }
        .faq-item .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: var(--border-subtle);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--text-secondary);
            transition: all var(--transition-base);
        }
        .faq-item.active .faq-question .faq-icon {
            background: var(--brand-gradient);
            color: var(--bg-primary);
            transform: rotate(45deg);
        }
        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 22px;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }
        .faq-item .faq-answer p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0;
        }

        /* ===== CTA 条 ===== */
        .cta-strip {
            background: var(--bg-card);
            border: 1px solid var(--border-medium);
            border-radius: var(--radius-lg);
            padding: 32px 36px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }
        .cta-strip::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--brand-gradient);
        }
        .cta-strip-text h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 6px 0;
        }
        .cta-strip-text p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.7;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--brand-gradient);
            color: var(--bg-primary);
            font-weight: 700;
            font-size: 14px;
            padding: 12px 26px;
            border-radius: var(--radius-md);
            border: none;
            cursor: pointer;
            white-space: nowrap;
            transition: all var(--transition-base);
            letter-spacing: 0.02em;
            box-shadow: 0 4px 16px rgba(0, 230, 118, 0.3);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 230, 118, 0.4);
            filter: brightness(1.05);
            color: var(--bg-primary);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(0, 230, 118, 0.6);
            outline-offset: 2px;
        }
        .btn-primary:active {
            transform: translateY(0);
            filter: brightness(0.95);
            box-shadow: 0 2px 8px rgba(0, 230, 118, 0.25);
        }

        /* ===== 查看更多 ===== */
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--brand-cyan);
            font-weight: 600;
            font-size: 14px;
            padding: 10px 22px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-cyan);
            cursor: pointer;
            white-space: nowrap;
            transition: all var(--transition-base);
        }
        .btn-outline:hover {
            background: rgba(0, 188, 212, 0.08);
            border-color: var(--brand-cyan);
            color: var(--brand-green);
            transform: translateY(-2px);
        }
        .btn-outline:focus-visible {
            outline: 3px solid rgba(0, 230, 118, 0.5);
            outline-offset: 2px;
        }
        .btn-outline:active {
            transform: translateY(0);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #080c10;
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 0;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 32px;
        }
        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 19px;
            color: var(--text-primary);
            margin-bottom: 14px;
        }
        .footer-brand .footer-logo .logo-icon {
            width: 34px;
            height: 34px;
            border-radius: 9px;
            background: var(--brand-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--bg-primary);
            font-size: 17px;
            font-weight: 900;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            margin: 0;
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 14px 0;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: color var(--transition-base);
        }
        .footer-col ul a:hover {
            color: var(--brand-green);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding: 18px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom .copyright {
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom .footer-links {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
        }
        .footer-bottom .footer-links a {
            color: var(--text-muted);
            transition: color var(--transition-base);
        }
        .footer-bottom .footer-links a:hover {
            color: var(--brand-cyan);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .review-list {
                grid-template-columns: 1fr 1fr;
            }
            .support-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-hero-inner {
                gap: 20px;
            }
            .category-hero-image {
                width: 260px;
                height: 170px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-toggle {
                display: block;
            }
            .mobile-menu.open {
                display: flex;
            }
            .container-custom {
                padding: 0 16px;
            }
            .category-hero {
                padding: 28px 0 24px;
            }
            .category-hero-inner {
                flex-direction: column;
                gap: 16px;
            }
            .category-hero-text h1 {
                font-size: 26px;
            }
            .category-hero-image {
                width: 100%;
                height: 180px;
            }
            .review-list {
                grid-template-columns: 1fr;
            }
            .support-grid {
                grid-template-columns: 1fr;
            }
            .ranking-list {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-strip {
                flex-direction: column;
                align-items: flex-start;
                padding: 24px 20px;
            }
            .section {
                padding: 40px 0;
            }
            .category-intro-card {
                flex-direction: column;
                padding: 20px 22px;
                gap: 16px;
            }
            .breadcrumb-bar {
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
            }
            .breadcrumb-wrapper {
                flex-wrap: nowrap;
                overflow-x: auto;
                gap: 8px;
                padding-bottom: 4px;
            }
        }

        @media (max-width: 520px) {
            .review-card .card-thumb {
                height: 160px;
            }
            .review-card .card-body {
                padding: 16px 18px 18px;
            }
            .review-card .card-title {
                font-size: 15px;
            }
            .category-hero-text h1 {
                font-size: 22px;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .section-header p {
                font-size: 14px;
            }
        }