/* roulang page: index */
:root {
            --bg-deep: #0a0e1a;
            --bg-elevated: #0f172a;
            --glass-card: rgba(16, 24, 48, 0.68);
            --glass-border: rgba(0, 242, 254, 0.16);
            --neon-cyan: #00f2fe;
            --electric-blue: #4facfe;
            --accent-purple: #7b2cbf;
            --text-pure: #ffffff;
            --text-soft: #94a3b8;
            --text-dark: #64748b;
            --radius-card: 16px;
            --radius-pill: 50px;
            --shadow-glow: 0 0 20px rgba(0, 242, 254, 0.35);
            --transition-smooth: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

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

        body {
            background-color: var(--bg-deep);
            background-image: 
                radial-gradient(circle at 15% 20%, rgba(79, 172, 254, 0.08) 0%, transparent 40%),
                radial-gradient(circle at 85% 80%, rgba(123, 44, 191, 0.08) 0%, transparent 40%);
            color: var(--text-soft);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            line-height: 1.65;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition-smooth);
        }

        /* 导航栏重塑 */
        .site-header {
            background: rgba(10, 14, 26, 0.88);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--glass-border);
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: var(--transition-smooth);
        }

        .navbar-brand-custom {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-pure);
            letter-spacing: 0.5px;
        }

        .logo-icon-sparkle {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--neon-cyan), var(--electric-blue));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #060913;
            box-shadow: var(--shadow-glow);
        }

        .nav-links-wrap .nav-link {
            color: var(--text-soft);
            font-size: 0.98rem;
            padding: 8px 18px;
            border-radius: var(--radius-pill);
            transition: var(--transition-smooth);
        }

        .nav-links-wrap .nav-link:hover,
        .nav-links-wrap .nav-link.active {
            color: var(--neon-cyan);
            background: rgba(0, 242, 254, 0.08);
        }

        /* 双 CTA 按钮规范 */
        .btn-ghost-glow {
            border: 1px solid var(--neon-cyan);
            color: var(--neon-cyan);
            background: transparent;
            padding: 8px 22px;
            border-radius: var(--radius-pill);
            font-size: 0.92rem;
            font-weight: 500;
            box-shadow: 0 0 10px rgba(0, 242, 254, 0.15);
            transition: var(--transition-smooth);
        }

        .btn-ghost-glow:hover {
            background: rgba(0, 242, 254, 0.15);
            color: var(--text-pure);
            box-shadow: var(--shadow-glow);
            transform: scale(1.03);
        }

        .btn-primary-glow {
            background: linear-gradient(135deg, var(--neon-cyan), var(--electric-blue));
            color: #050b14;
            border: none;
            padding: 9px 24px;
            border-radius: var(--radius-pill);
            font-size: 0.92rem;
            font-weight: 600;
            box-shadow: var(--shadow-glow);
            transition: var(--transition-smooth);
        }

        .btn-primary-glow:hover {
            background: linear-gradient(135deg, #2bf6ff, #62b5fe);
            color: #000;
            box-shadow: 0 0 25px rgba(0, 242, 254, 0.6);
            transform: scale(1.03);
        }

        /* 基础通用玻璃拟态卡片 */
        .glass-panel {
            background: var(--glass-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 28px;
            transition: var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .glass-panel:hover {
            border-color: rgba(0, 242, 254, 0.45);
            transform: translateY(-6px);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4), 0 0 15px rgba(0, 242, 254, 0.2);
        }

        /* 板块标题排版系统 */
        .section-header-block {
            margin-bottom: 45px;
            text-align: center;
        }

        .section-tag-pill {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(0, 242, 254, 0.1);
            border: 1px solid rgba(0, 242, 254, 0.25);
            color: var(--neon-cyan);
            font-size: 0.82rem;
            padding: 4px 14px;
            border-radius: var(--radius-pill);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }

        .section-heading-title {
            color: var(--text-pure);
            font-size: 2.1rem;
            font-weight: 700;
            letter-spacing: -0.5px;
            margin-bottom: 14px;
        }

        .section-lead-desc {
            max-width: 780px;
            margin: 0 auto;
            color: var(--text-soft);
            font-size: 1.02rem;
            line-height: 1.7;
        }

        .section-space {
            padding: 85px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        /* 1. Hero 样式定制 */
        .hero-section-box {
            padding: 100px 0 80px;
            position: relative;
            text-align: center;
        }

        .hero-headline {
            font-size: 2.85rem;
            font-weight: 800;
            color: var(--text-pure);
            margin-bottom: 20px;
            line-height: 1.25;
            background: linear-gradient(135deg, #ffffff 40%, var(--neon-cyan) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-search-wrapper {
            max-width: 680px;
            margin: 32px auto 20px;
            position: relative;
        }

        .hero-search-input {
            width: 100%;
            padding: 16px 140px 16px 24px;
            background: rgba(16, 24, 48, 0.85);
            border: 1px solid rgba(0, 242, 254, 0.35);
            border-radius: var(--radius-pill);
            color: var(--text-pure);
            font-size: 1.05rem;
            outline: none;
            box-shadow: 0 0 25px rgba(0, 242, 254, 0.15);
            transition: var(--transition-smooth);
        }

        .hero-search-input:focus {
            border-color: var(--neon-cyan);
            box-shadow: 0 0 35px rgba(0, 242, 254, 0.4);
        }

        .hero-search-btn {
            position: absolute;
            right: 8px;
            top: 8px;
            bottom: 8px;
            background: linear-gradient(135deg, var(--neon-cyan), var(--electric-blue));
            border: none;
            border-radius: var(--radius-pill);
            color: #060913;
            padding: 0 24px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition-smooth);
        }

        .hero-quick-tags {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 18px;
        }

        .tag-capsule-item {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--text-soft);
            padding: 4px 14px;
            border-radius: var(--radius-pill);
            font-size: 0.84rem;
            transition: var(--transition-smooth);
        }

        .tag-capsule-item:hover {
            color: var(--neon-cyan);
            border-color: var(--neon-cyan);
            background: rgba(0, 242, 254, 0.08);
        }

        /* 痛点对比卡片 */
        .pain-card-bad {
            background: rgba(36, 16, 28, 0.65);
            border: 1px solid rgba(255, 75, 75, 0.2);
            border-radius: var(--radius-card);
            padding: 26px;
        }
        .pain-card-good {
            background: rgba(16, 38, 48, 0.65);
            border: 1px solid rgba(0, 242, 254, 0.3);
            border-radius: var(--radius-card);
            padding: 26px;
        }

        /* 步骤连线指示器 */
        .step-tracker-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .step-item-card {
            background: var(--glass-card);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 26px;
            position: relative;
        }

        .step-index-badge {
            width: 42px;
            height: 42px;
            background: rgba(0, 242, 254, 0.12);
            border: 1px solid var(--neon-cyan);
            color: var(--neon-cyan);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 18px;
            box-shadow: 0 0 10px rgba(0, 242, 254, 0.25);
        }

        /* HUD 数据仪表板 */
        .hud-metric-box {
            background: rgba(14, 20, 38, 0.8);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 24px;
        }

        .hud-progress-track {
            height: 8px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 4px;
            overflow: hidden;
            margin-top: 10px;
        }

        .hud-progress-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--electric-blue), var(--neon-cyan));
            border-radius: 4px;
            box-shadow: 0 0 8px var(--neon-cyan);
        }

        /* 手风琴折叠面板覆盖 */
        .accordion-glass .accordion-item {
            background: var(--glass-card);
            border: 1px solid var(--glass-border);
            border-radius: 12px !important;
            margin-bottom: 14px;
            overflow: hidden;
        }

        .accordion-glass .accordion-button {
            background: transparent;
            color: var(--text-pure);
            font-size: 1.05rem;
            font-weight: 600;
            padding: 20px 24px;
            box-shadow: none;
        }

        .accordion-glass .accordion-button:not(.collapsed) {
            color: var(--neon-cyan);
            background: rgba(0, 242, 254, 0.05);
            border-bottom: 1px solid rgba(0, 242, 254, 0.15);
        }

        .accordion-glass .accordion-button::after {
            filter: invert(1);
        }

        .accordion-glass .accordion-body {
            color: var(--text-soft);
            padding: 20px 24px;
            font-size: 0.96rem;
            line-height: 1.7;
        }

        /* 页脚 */
        .site-footer {
            background: #060911;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 65px 0 35px;
            font-size: 0.92rem;
        }

        .footer-col-title {
            color: var(--text-pure);
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .footer-link-item {
            color: var(--text-dark);
            display: block;
            margin-bottom: 10px;
            transition: var(--transition-smooth);
        }

        .footer-link-item:hover {
            color: var(--neon-cyan);
            transform: translateX(4px);
        }

        /* 响应式断点处理 */
        @media (max-width: 991px) {
            .step-tracker-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-headline {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 767px) {
            .step-tracker-grid {
                grid-template-columns: 1fr;
            }
            .hero-headline {
                font-size: 1.85rem;
            }
            .glass-panel {
                backdrop-filter: none;
                background: #0f182c;
            }
            .section-space {
                padding: 55px 0;
            }
            .hero-search-wrapper {
                padding: 0 10px;
            }
            .hero-search-btn {
                position: static;
                width: 100%;
                margin-top: 10px;
                padding: 12px 0;
                justify-content: center;
            }
            .hero-search-input {
                padding: 14px 18px;
            }
        }

/* roulang page: category1 */
:root {
        --bg-deep: #0a0e1a;
        --bg-elevated: #0f172a;
        --glass-card: rgba(16, 24, 48, 0.68);
        --glass-border: rgba(0, 242, 254, 0.16);
        --neon-cyan: #00f2fe;
        --electric-blue: #4facfe;
        --accent-purple: #7b2cbf;
        --text-pure: #ffffff;
        --text-soft: #94a3b8;
        --text-dark: #64748b;
        --radius-card: 16px;
        --radius-pill: 50px;
        --shadow-glow: 0 0 20px rgba(0, 242, 254, 0.35);
        --transition-smooth: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    body {
        background-color: var(--bg-deep);
        background-image: 
            radial-gradient(circle at 15% 20%, rgba(79, 172, 254, 0.08) 0%, transparent 40%),
            radial-gradient(circle at 85% 80%, rgba(123, 44, 191, 0.08) 0%, transparent 40%);
        color: var(--text-soft);
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        line-height: 1.65;
        overflow-x: hidden;
    }
    a {
        text-decoration: none;
        color: inherit;
        transition: var(--transition-smooth);
    }
    /* 导航栏重塑 */
    .site-header {
        background: rgba(10, 14, 26, 0.88);
        backdrop-filter: blur(14px);
        -webkit-backdrop-filter: blur(14px);
        border-bottom: 1px solid var(--glass-border);
        position: sticky;
        top: 0;
        z-index: 1050;
        transition: var(--transition-smooth);
    }
    .navbar-brand-custom {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 1.35rem;
        font-weight: 700;
        color: var(--text-pure);
        letter-spacing: 0.5px;
    }
    .logo-icon-sparkle {
        width: 36px;
        height: 36px;
        background: linear-gradient(135deg, var(--neon-cyan), var(--electric-blue));
        border-radius: 10px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: #060913;
        box-shadow: var(--shadow-glow);
    }
    .nav-links-wrap .nav-link {
        color: var(--text-soft);
        font-size: 0.98rem;
        padding: 8px 18px;
        border-radius: var(--radius-pill);
        transition: var(--transition-smooth);
    }
    .nav-links-wrap .nav-link:hover,
    .nav-links-wrap .nav-link.active {
        color: var(--neon-cyan);
        background: rgba(0, 242, 254, 0.08);
    }
    /* 双 CTA 按钮规范 */
    .btn-ghost-glow {
        border: 1px solid var(--neon-cyan);
        color: var(--neon-cyan);
        background: transparent;
        padding: 8px 22px;
        border-radius: var(--radius-pill);
        font-size: 0.92rem;
        font-weight: 500;
        box-shadow: 0 0 10px rgba(0, 242, 254, 0.15);
        transition: var(--transition-smooth);
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }
    .btn-ghost-glow:hover {
        background: rgba(0, 242, 254, 0.15);
        color: var(--text-pure);
        box-shadow: var(--shadow-glow);
        transform: scale(1.03);
    }
    .btn-primary-glow {
        background: linear-gradient(135deg, var(--neon-cyan), var(--electric-blue));
        color: #050b14;
        border: none;
        padding: 9px 24px;
        border-radius: var(--radius-pill);
        font-size: 0.92rem;
        font-weight: 600;
        box-shadow: var(--shadow-glow);
        transition: var(--transition-smooth);
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }
    .btn-primary-glow:hover {
        background: linear-gradient(135deg, #2bf6ff, #62b5fe);
        color: #000;
        box-shadow: 0 0 25px rgba(0, 242, 254, 0.6);
        transform: scale(1.03);
    }
    /* 玻璃拟态卡片基础 */
    .glass-card {
        background: var(--glass-card);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border: 1px solid var(--glass-border);
        border-radius: var(--radius-card);
        transition: var(--transition-smooth);
    }
    .glass-card:hover {
        border-color: rgba(0, 242, 254, 0.45);
        box-shadow: 0 10px 30px rgba(0, 242, 254, 0.12);
    }
    /* 分类页板块通用间距与标题 */
    .cat-section {
        padding: 55px 0;
        position: relative;
    }
    .cat-section-header {
        margin-bottom: 30px;
    }
    .cat-badge-tag {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 4px 14px;
        border-radius: var(--radius-pill);
        font-size: 0.8rem;
        background: rgba(0, 242, 254, 0.1);
        border: 1px solid rgba(0, 242, 254, 0.25);
        color: var(--neon-cyan);
        margin-bottom: 12px;
    }
    .cat-title-text {
        font-size: 1.85rem;
        font-weight: 700;
        color: var(--text-pure);
        letter-spacing: -0.3px;
        margin-bottom: 10px;
    }
    .cat-desc-text {
        color: var(--text-soft);
        font-size: 0.98rem;
        line-height: 1.6;
    }

    /* 板块 1: 分类专属头部指示区 */
    .category-hero-header {
        padding: 45px 0 25px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    .breadcrumb-custom {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 0.88rem;
        margin-bottom: 18px;
    }
    .breadcrumb-custom a {
        color: var(--text-dark);
    }
    .breadcrumb-custom a:hover {
        color: var(--neon-cyan);
    }
    .breadcrumb-custom span {
        color: var(--neon-cyan);
    }
    .cat-main-h1 {
        font-size: 2.35rem;
        font-weight: 800;
        color: var(--text-pure);
        margin-bottom: 12px;
        letter-spacing: -0.5px;
        background: linear-gradient(135deg, #ffffff 60%, var(--neon-cyan) 100%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
    }
    .cat-header-meta {
        display: flex;
        flex-wrap: wrap;
        gap: 16px;
        margin-top: 18px;
        align-items: center;
    }
    .cat-meta-item {
        font-size: 0.85rem;
        color: var(--text-soft);
        display: inline-flex;
        align-items: center;
        gap: 6px;
        background: rgba(15, 23, 42, 0.6);
        padding: 5px 14px;
        border-radius: var(--radius-pill);
        border: 1px solid rgba(255, 255, 255, 0.05);
    }

    /* 板块 2: 多维条件过滤与筛选工具栏 */
    .filter-panel-box {
        padding: 20px 24px;
        margin-bottom: 35px;
    }
    .filter-row-item {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 10px;
        margin-bottom: 14px;
    }
    .filter-row-item:last-child {
        margin-bottom: 0;
    }
    .filter-label {
        font-size: 0.85rem;
        color: var(--text-dark);
        min-width: 72px;
        font-weight: 600;
    }
    .filter-pill {
        font-size: 0.82rem;
        padding: 4px 14px;
        border-radius: var(--radius-pill);
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid rgba(255, 255, 255, 0.08);
        color: var(--text-soft);
        cursor: pointer;
        transition: var(--transition-smooth);
    }
    .filter-pill:hover,
    .filter-pill.active {
        background: rgba(0, 242, 254, 0.15);
        border-color: var(--neon-cyan);
        color: var(--neon-cyan);
        box-shadow: 0 0 10px rgba(0, 242, 254, 0.2);
    }

    /* 板块 3: 核心内容卡片矩阵 */
    .video-card-item {
        overflow: hidden;
        display: flex;
        flex-direction: column;
        height: 100%;
    }
    .video-card-item:hover {
        transform: translateY(-6px);
    }
    .video-card-thumb {
        position: relative;
        height: 180px;
        background: linear-gradient(145deg, #131c31, #0c1424);
        border-bottom: 1px solid rgba(0, 242, 254, 0.1);
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .thumb-glow-icon {
        width: 52px;
        height: 52px;
        border-radius: 50%;
        background: rgba(0, 242, 254, 0.12);
        border: 1px solid var(--neon-cyan);
        color: var(--neon-cyan);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.25rem;
        box-shadow: var(--shadow-glow);
        transition: var(--transition-smooth);
    }
    .video-card-item:hover .thumb-glow-icon {
        transform: scale(1.12);
        background: var(--neon-cyan);
        color: #060913;
    }
    .thumb-badge-top {
        position: absolute;
        top: 12px;
        left: 12px;
        font-size: 0.75rem;
        background: rgba(10, 14, 26, 0.85);
        color: var(--neon-cyan);
        border: 1px solid var(--glass-border);
        padding: 2px 10px;
        border-radius: var(--radius-pill);
    }
    .thumb-metric-tag {
        position: absolute;
        bottom: 10px;
        right: 12px;
        font-size: 0.72rem;
        background: rgba(6, 9, 19, 0.85);
        color: #38ef7d;
        padding: 2px 8px;
        border-radius: 4px;
        display: flex;
        align-items: center;
        gap: 4px;
    }
    .video-card-body {
        padding: 18px 20px;
        flex: 1;
        display: flex;
        flex-direction: column;
        justify-content: space-between;
    }
    .video-card-title {
        font-size: 1.05rem;
        font-weight: 600;
        color: var(--text-pure);
        margin-bottom: 8px;
        line-height: 1.4;
    }
    .video-card-desc {
        font-size: 0.85rem;
        color: var(--text-soft);
        margin-bottom: 14px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .video-card-footer {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding-top: 12px;
        border-top: 1px solid rgba(255, 255, 255, 0.05);
        font-size: 0.8rem;
        color: var(--text-dark);
    }
    .video-action-link {
        color: var(--neon-cyan);
        display: inline-flex;
        align-items: center;
        gap: 4px;
        font-size: 0.85rem;
        font-weight: 500;
    }
    .video-action-link:hover {
        color: #fff;
    }

    /* 板块 4: 分页控制与加载状态器 */
    .pagination-bar-wrapper {
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 15px;
        padding: 22px 24px;
        margin-top: 30px;
    }
    .pagination-pills {
        display: flex;
        align-items: center;
        gap: 8px;
        margin-bottom: 0;
    }
    .pagination-pills .page-item a {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 38px;
        height: 38px;
        border-radius: var(--radius-pill);
        background: rgba(16, 24, 48, 0.6);
        border: 1px solid rgba(0, 242, 254, 0.15);
        color: var(--text-soft);
        font-size: 0.88rem;
    }
    .pagination-pills .page-item.active a,
    .pagination-pills .page-item a:hover {
        background: rgba(0, 242, 254, 0.18);
        border-color: var(--neon-cyan);
        color: var(--neon-cyan);
        box-shadow: 0 0 12px rgba(0, 242, 254, 0.3);
    }

    /* 板块 5: 排行榜 */
    .rank-board-card {
        padding: 20px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-bottom: 14px;
    }
    .rank-board-card:hover {
        border-color: rgba(0, 242, 254, 0.4);
        transform: translateX(4px);
    }
    .rank-number-box {
        width: 38px;
        height: 38px;
        border-radius: 10px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: 800;
        font-size: 1.1rem;
        flex-shrink: 0;
    }
    .rank-1 {
        background: linear-gradient(135deg, #ffd700, #ffaa00);
        color: #1a0f00;
        box-shadow: 0 0 15px rgba(255, 215, 0, 0.3);
    }
    .rank-2 {
        background: linear-gradient(135deg, #e0e7ff, #a5b4fc);
        color: #1e1b4b;
        box-shadow: 0 0 12px rgba(165, 180, 252, 0.3);
    }
    .rank-3 {
        background: linear-gradient(135deg, #f97316, #ea580c);
        color: #fff;
        box-shadow: 0 0 12px rgba(249, 115, 22, 0.3);
    }
    .rank-other {
        background: rgba(255, 255, 255, 0.05);
        color: var(--text-dark);
        border: 1px solid rgba(255, 255, 255, 0.1);
    }
    .rank-info-main {
        flex: 1;
        padding: 0 18px;
    }
    .rank-title {
        color: var(--text-pure);
        font-size: 1rem;
        font-weight: 600;
        margin-bottom: 4px;
    }
    .rank-tags {
        font-size: 0.78rem;
        color: var(--text-dark);
    }
    .rank-data-val {
        text-align: right;
        flex-shrink: 0;
    }
    .rank-score {
        color: var(--neon-cyan);
        font-weight: 700;
        font-size: 1.15rem;
    }

    /* 板块 6: 深度解析与特性指南 */
    .spec-guide-card {
        padding: 28px;
        height: 100%;
    }
    .spec-icon-badge {
        width: 48px;
        height: 48px;
        border-radius: 12px;
        background: rgba(0, 242, 254, 0.1);
        border: 1px solid rgba(0, 242, 254, 0.25);
        color: var(--neon-cyan);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.25rem;
        margin-bottom: 18px;
    }
    .spec-title {
        font-size: 1.2rem;
        font-weight: 700;
        color: var(--text-pure);
        margin-bottom: 10px;
    }
    .spec-content-p {
        font-size: 0.92rem;
        color: var(--text-soft);
        line-height: 1.65;
        margin-bottom: 0;
    }

    /* 板块 7: 技巧与说明 */
    .tip-item-card {
        padding: 24px;
        height: 100%;
        display: flex;
        gap: 16px;
    }
    .tip-icon-box {
        width: 42px;
        height: 42px;
        border-radius: 50%;
        background: rgba(123, 44, 191, 0.15);
        border: 1px solid rgba(123, 44, 191, 0.4);
        color: #d8b4fe;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.1rem;
        flex-shrink: 0;
    }
    .tip-title {
        font-size: 1.05rem;
        font-weight: 600;
        color: var(--text-pure);
        margin-bottom: 6px;
    }
    .tip-desc {
        font-size: 0.88rem;
        color: var(--text-soft);
        line-height: 1.6;
        margin-bottom: 0;
    }

    /* 板块 8: 底部行动沉淀区 */
    .cta-banner-box {
        padding: 45px 35px;
        background: linear-gradient(135deg, rgba(16, 24, 48, 0.9), rgba(15, 23, 42, 0.95));
        border: 1px solid rgba(0, 242, 254, 0.3);
        box-shadow: 0 0 30px rgba(0, 242, 254, 0.1);
        position: relative;
        overflow: hidden;
    }
    .cta-banner-box::before {
        content: "";
        position: absolute;
        top: -50px;
        right: -50px;
        width: 200px;
        height: 200px;
        background: radial-gradient(circle, rgba(0, 242, 254, 0.2) 0%, transparent 70%);
        pointer-events: none;
    }

    /* 页脚样式复用 */
    .footer-block {
        background: #060913;
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        padding: 60px 0 25px;
    }
    .footer-logo {
        font-size: 1.3rem;
        font-weight: 700;
        color: var(--text-pure);
        display: flex;
        align-items: center;
        gap: 8px;
    }

    @media (max-width: 991.98px) {
        .cat-main-h1 {
            font-size: 1.95rem;
        }
        .section-heading-title {
            font-size: 1.7rem;
        }
        .pagination-bar-wrapper {
            justify-content: center;
        }
    }
    @media (max-width: 767.98px) {
        .cat-section {
            padding: 40px 0;
        }
        .cat-main-h1 {
            font-size: 1.65rem;
        }
        .video-card-thumb {
            height: 150px;
        }
        .cta-banner-box {
            padding: 30px 20px;
            text-align: center;
        }
    }

/* roulang page: category2 */
:root {
      --bg-deep: #0a0e1a;
      --bg-elevated: #0f172a;
      --glass-card: rgba(16, 24, 48, 0.68);
      --glass-border: rgba(0, 242, 254, 0.16);
      --neon-cyan: #00f2fe;
      --electric-blue: #4facfe;
      --accent-purple: #7b2cbf;
      --text-pure: #ffffff;
      --text-soft: #94a3b8;
      --text-dark: #64748b;
      --radius-card: 16px;
      --radius-pill: 50px;
      --shadow-glow: 0 0 20px rgba(0, 242, 254, 0.35);
      --transition-smooth: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    body {
      background-color: var(--bg-deep);
      background-image: 
        radial-gradient(circle at 15% 20%, rgba(79, 172, 254, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 85% 80%, rgba(123, 44, 191, 0.08) 0%, transparent 40%);
      color: var(--text-soft);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.65;
      overflow-x: hidden;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition-smooth);
    }
    /* 导航栏统一视觉 */
    .site-header {
      background: rgba(10, 14, 26, 0.88);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--glass-border);
      position: sticky;
      top: 0;
      z-index: 1050;
      transition: var(--transition-smooth);
    }
    .navbar-brand-custom {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--text-pure);
      letter-spacing: 0.5px;
    }
    .logo-icon-sparkle {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--neon-cyan), var(--electric-blue));
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #060913;
      box-shadow: var(--shadow-glow);
    }
    .nav-links-wrap .nav-link {
      color: var(--text-soft);
      font-size: 0.98rem;
      padding: 8px 18px;
      border-radius: var(--radius-pill);
      transition: var(--transition-smooth);
    }
    .nav-links-wrap .nav-link:hover,
    .nav-links-wrap .nav-link.active {
      color: var(--neon-cyan);
      background: rgba(0, 242, 254, 0.08);
    }
    .btn-ghost-glow {
      border: 1px solid var(--neon-cyan);
      color: var(--neon-cyan);
      background: transparent;
      padding: 8px 22px;
      border-radius: var(--radius-pill);
      font-size: 0.92rem;
      font-weight: 500;
      box-shadow: 0 0 10px rgba(0, 242, 254, 0.15);
      transition: var(--transition-smooth);
    }
    .btn-ghost-glow:hover {
      background: rgba(0, 242, 254, 0.15);
      color: var(--text-pure);
      box-shadow: var(--shadow-glow);
      transform: scale(1.03);
    }
    .btn-primary-glow {
      background: linear-gradient(135deg, var(--neon-cyan), var(--electric-blue));
      color: #050b14;
      border: none;
      padding: 9px 24px;
      border-radius: var(--radius-pill);
      font-size: 0.92rem;
      font-weight: 600;
      box-shadow: var(--shadow-glow);
      transition: var(--transition-smooth);
    }
    .btn-primary-glow:hover {
      background: linear-gradient(135deg, #2bf6ff, #62b5fe);
      color: #000;
      box-shadow: 0 0 25px rgba(0, 242, 254, 0.6);
      transform: scale(1.03);
    }
    /* 分类专属板块通规 */
    .cat-section {
      padding: 60px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    }
    .glass-panel {
      background: var(--glass-card);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius-card);
      transition: var(--transition-smooth);
    }
    .glass-panel:hover {
      border-color: rgba(0, 242, 254, 0.35);
      box-shadow: 0 8px 32px rgba(0, 242, 254, 0.12);
    }
    /* 板块1：分类专属头部指示区 */
    .cat-header-wrap {
      padding: 45px 0 20px;
    }
    .cat-breadcrumb {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.88rem;
      margin-bottom: 18px;
    }
    .cat-breadcrumb a {
      color: var(--text-dark);
    }
    .cat-breadcrumb a:hover {
      color: var(--neon-cyan);
    }
    .cat-breadcrumb .separator {
      color: var(--text-dark);
      font-size: 0.75rem;
    }
    .cat-breadcrumb .current {
      color: var(--neon-cyan);
    }
    .cat-h1-title {
      font-size: 2.35rem;
      font-weight: 800;
      color: var(--text-pure);
      letter-spacing: -0.5px;
      margin-bottom: 14px;
      background: linear-gradient(135deg, #ffffff 50%, var(--neon-cyan) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .cat-subtitle {
      font-size: 1.05rem;
      color: var(--text-soft);
      max-width: 820px;
      line-height: 1.7;
    }
    .stat-pill-group {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 24px;
    }
    .stat-pill {
      background: rgba(16, 24, 48, 0.85);
      border: 1px solid rgba(0, 242, 254, 0.2);
      border-radius: var(--radius-pill);
      padding: 6px 16px;
      font-size: 0.85rem;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .stat-pill i {
      color: var(--neon-cyan);
    }
    .stat-pill .num {
      color: #fff;
      font-weight: 600;
    }
    /* 板块2：多维条件过滤工具栏 */
    .filter-box {
      padding: 24px 28px;
    }
    .filter-row {
      display: flex;
      align-items: center;
      gap: 16px;
      padding: 10px 0;
      border-bottom: 1px dashed rgba(255, 255, 255, 0.06);
    }
    .filter-row:last-child {
      border-bottom: none;
      padding-bottom: 0;
    }
    .filter-row:first-child {
      padding-top: 0;
    }
    .filter-label {
      font-size: 0.88rem;
      color: var(--text-dark);
      min-width: 85px;
      font-weight: 500;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .filter-options {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .filter-btn {
      padding: 4px 14px;
      border-radius: var(--radius-pill);
      font-size: 0.84rem;
      color: var(--text-soft);
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.08);
      cursor: pointer;
      transition: var(--transition-smooth);
    }
    .filter-btn:hover {
      color: var(--neon-cyan);
      border-color: rgba(0, 242, 254, 0.3);
      background: rgba(0, 242, 254, 0.06);
    }
    .filter-btn.active {
      background: linear-gradient(135deg, rgba(0, 242, 254, 0.18), rgba(79, 172, 254, 0.25));
      border-color: var(--neon-cyan);
      color: #ffffff;
      font-weight: 600;
      box-shadow: 0 0 12px rgba(0, 242, 254, 0.2);
    }
    /* 板块3：核心内容卡片矩阵主体 */
    .stream-card {
      border-radius: var(--radius-card);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      height: 100%;
      position: relative;
    }
    .stream-card:hover {
      transform: translateY(-6px);
      border-color: var(--neon-cyan);
      box-shadow: 0 12px 28px rgba(0, 242, 254, 0.2);
    }
    .card-thumb-wrap {
      position: relative;
      height: 175px;
      background: #0d1326;
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
    }
    .thumb-grid-pattern {
      position: absolute;
      inset: 0;
      background-image: linear-gradient(rgba(0, 242, 254, 0.08) 1px, transparent 1px), linear-gradient(90deg, rgba(0, 242, 254, 0.08) 1px, transparent 1px);
      background-size: 18px 18px;
    }
    .thumb-pulse-core {
      width: 58px;
      height: 58px;
      border-radius: 50%;
      background: rgba(0, 242, 254, 0.12);
      border: 1px solid rgba(0, 242, 254, 0.4);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      color: var(--neon-cyan);
      z-index: 2;
      box-shadow: 0 0 20px rgba(0, 242, 254, 0.25);
      transition: var(--transition-smooth);
    }
    .stream-card:hover .thumb-pulse-core {
      transform: scale(1.12);
      background: rgba(0, 242, 254, 0.25);
      box-shadow: 0 0 30px rgba(0, 242, 254, 0.6);
    }
    .card-tag-badge {
      position: absolute;
      top: 12px;
      left: 12px;
      z-index: 3;
      padding: 3px 10px;
      border-radius: var(--radius-pill);
      font-size: 0.75rem;
      font-weight: 600;
      letter-spacing: 0.5px;
    }
    .badge-neon {
      background: rgba(0, 242, 254, 0.2);
      border: 1px solid var(--neon-cyan);
      color: var(--neon-cyan);
    }
    .badge-purple {
      background: rgba(123, 44, 191, 0.3);
      border: 1px solid #a855f7;
      color: #e9d5ff;
    }
    .badge-emerald {
      background: rgba(16, 185, 129, 0.2);
      border: 1px solid #10b981;
      color: #6ee7b7;
    }
    .card-ping-badge {
      position: absolute;
      bottom: 12px;
      right: 12px;
      z-index: 3;
      background: rgba(10, 14, 26, 0.85);
      border: 1px solid rgba(255, 255, 255, 0.12);
      padding: 2px 10px;
      border-radius: var(--radius-pill);
      font-size: 0.72rem;
      color: #38ef7d;
      display: flex;
      align-items: center;
      gap: 5px;
    }
    .card-body-wrap {
      padding: 20px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .card-title-text {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-pure);
      margin-bottom: 8px;
      line-height: 1.4;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .card-title-text a:hover {
      color: var(--neon-cyan);
    }
    .card-summary-text {
      font-size: 0.85rem;
      color: var(--text-soft);
      line-height: 1.6;
      margin-bottom: 16px;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .card-meta-bar {
      margin-top: auto;
      padding-top: 14px;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 0.78rem;
      color: var(--text-dark);
    }
    .card-action-link {
      display: inline-flex;
      align-items: center;
      gap: 5px;
      color: var(--neon-cyan);
      font-weight: 600;
      font-size: 0.82rem;
    }
    .card-action-link:hover {
      color: #fff;
    }
    /* 板块4：分页控件 */
    .pagination-bar-wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
      padding: 16px 24px;
    }
    .page-nav-group {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .page-link-pill {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.88rem;
      color: var(--text-soft);
      transition: var(--transition-smooth);
    }
    .page-link-pill:hover {
      border-color: var(--neon-cyan);
      color: var(--neon-cyan);
      background: rgba(0, 242, 254, 0.08);
    }
    .page-link-pill.active {
      background: linear-gradient(135deg, var(--neon-cyan), var(--electric-blue));
      color: #050b14;
      border-color: transparent;
      font-weight: 700;
      box-shadow: 0 0 15px rgba(0, 242, 254, 0.4);
    }
    .page-stat-info {
      font-size: 0.85rem;
      color: var(--text-dark);
    }
    /* 板块5：热度榜与趋势排行榜 */
    .rank-board-card {
      padding: 24px;
      height: 100%;
    }
    .rank-item {
      display: flex;
      align-items: center;
      gap: 14px;
      padding: 14px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      transition: var(--transition-smooth);
    }
    .rank-item:last-child {
      border-bottom: none;
      padding-bottom: 0;
    }
    .rank-num-badge {
      width: 32px;
      height: 32px;
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 0.95rem;
      flex-shrink: 0;
    }
    .rank-1 {
      background: linear-gradient(135deg, #ffd700, #ffae00);
      color: #080808;
      box-shadow: 0 0 12px rgba(255, 215, 0, 0.4);
    }
    .rank-2 {
      background: linear-gradient(135deg, #e2e8f0, #94a3b8);
      color: #080808;
      box-shadow: 0 0 10px rgba(226, 232, 240, 0.3);
    }
    .rank-3 {
      background: linear-gradient(135deg, #f97316, #c2410c);
      color: #fff;
      box-shadow: 0 0 10px rgba(249, 115, 22, 0.3);
    }
    .rank-other {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      color: var(--text-dark);
    }
    .rank-info {
      flex-grow: 1;
      overflow: hidden;
    }
    .rank-title {
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--text-pure);
      margin-bottom: 4px;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .rank-meter {
      font-size: 0.78rem;
      color: var(--text-dark);
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .rank-score {
      color: var(--neon-cyan);
      font-weight: 600;
      font-size: 0.88rem;
      flex-shrink: 0;
    }
    /* 板块6：本分类深度解析与特性指南 */
    .guide-box {
      padding: 36px 32px;
    }
    .guide-icon-pill {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: rgba(0, 242, 254, 0.1);
      border: 1px solid rgba(0, 242, 254, 0.25);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--neon-cyan);
      font-size: 1.3rem;
      margin-bottom: 20px;
    }
    /* 板块7：分类常见使用技巧与说明 */
    .tip-card {
      padding: 24px;
      height: 100%;
    }
    .tip-card h3 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-pure);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .tip-card h3 i {
      color: var(--neon-cyan);
    }
    .tip-card p {
      font-size: 0.88rem;
      color: var(--text-soft);
      line-height: 1.65;
      margin-bottom: 0;
    }
    /* 板块8：分类底部行动沉淀区 */
    .cta-banner-wrap {
      padding: 45px 36px;
      position: relative;
      overflow: hidden;
      border: 1px solid rgba(0, 242, 254, 0.3);
      box-shadow: 0 0 35px rgba(0, 242, 254, 0.15);
      background: linear-gradient(135deg, rgba(16, 24, 48, 0.95), rgba(15, 23, 42, 0.9));
    }
    .cta-banner-wrap::before {
      content: "";
      position: absolute;
      top: -50%;
      right: -10%;
      width: 320px;
      height: 320px;
      background: radial-gradient(circle, rgba(0, 242, 254, 0.12), transparent 70%);
      pointer-events: none;
    }
    /* 页脚样式 */
    .footer-block {
      background: #070a13;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding: 65px 0 30px;
      margin-top: 20px;
    }
    .footer-logo {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-pure);
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .footer-divider {
      height: 1px;
      background: rgba(255, 255, 255, 0.05);
      margin: 35px 0 25px;
    }
    .footer-bottom-copy {
      font-size: 0.82rem;
      color: var(--text-dark);
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      gap: 12px;
      align-items: center;
    }
    @media (max-width: 768px) {
      .cat-h1-title {
        font-size: 1.8rem;
      }
      .filter-box {
        padding: 18px 16px;
      }
      .filter-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
      }
      .card-thumb-wrap {
        height: 150px;
      }
      .cta-banner-wrap {
        padding: 30px 20px;
        text-align: center;
      }
      .cta-banner-wrap .d-flex {
        justify-content: center;
      }
    }

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