/* roulang page: index */
:root {
            --brand-primary: #E11D48;
            --brand-dark: #BE185D;
            --brand-coral: #FB7185;
            --brand-amber: #F59E0B;
            --brand-gradient: linear-gradient(135deg, #E11D48 0%, #BE185D 100%);
            --brand-gradient-hover: linear-gradient(135deg, #F43F5E 0%, #9F1239 100%);
            --brand-accent-glow: rgba(225, 29, 72, 0.28);
            --bg-body: #F8FAFC;
            --bg-surface: #FFFFFF;
            --bg-contrast: #0F172A;
            --text-main: #1E293B;
            --text-muted: #64748B;
            --border-soft: #E2E8F0;
            --radius-card: 1.25rem;
            --radius-pill: 9999px;
            --shadow-subtle: 0 10px 25px -5px rgba(225, 29, 72, 0.06), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
            --shadow-float: 0 20px 30px -10px rgba(225, 29, 72, 0.16), 0 10px 15px -5px rgba(15, 23, 42, 0.05);
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
            background-color: var(--bg-body);
            color: var(--text-main);
            line-height: 1.8;
            letter-spacing: 0.01em;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* 顶部导航栏 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.8);
            box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.03);
        }
        .navbar-brand {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--brand-primary);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .navbar-brand .brand-badge {
            background: var(--brand-gradient);
            color: #ffffff;
            width: 38px;
            height: 38px;
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            box-shadow: 0 4px 12px var(--brand-accent-glow);
        }
        .nav-link {
            font-weight: 500;
            color: var(--text-main);
            padding: 0.6rem 1.1rem !important;
            border-radius: var(--radius-pill);
            transition: all 0.2s ease;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--brand-primary);
            background: rgba(225, 29, 72, 0.06);
        }

        /* 胶囊按钮 */
        .btn-pill {
            border-radius: var(--radius-pill);
            padding: 0.65rem 1.5rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .btn-brand-primary {
            background: var(--brand-gradient);
            color: #ffffff;
            border: none;
            box-shadow: 0 4px 14px var(--brand-accent-glow);
        }
        .btn-brand-primary:hover {
            background: var(--brand-gradient-hover);
            color: #ffffff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(225, 29, 72, 0.35);
        }
        .btn-brand-primary:active {
            transform: translateY(1px);
        }
        .btn-brand-outline {
            background: transparent;
            color: var(--brand-primary);
            border: 1.5px solid var(--brand-primary);
        }
        .btn-brand-outline:hover {
            background: rgba(225, 29, 72, 0.08);
            color: var(--brand-dark);
            border-color: var(--brand-dark);
            transform: translateY(-2px);
        }

        /* 统一卡片 */
        .custom-card {
            background: var(--bg-surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-subtle);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .custom-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-float);
            border-color: rgba(225, 29, 72, 0.2);
        }

        /* 板块通用标题 */
        .section-header {
            margin-bottom: 2.75rem;
        }
        .section-header .sub-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.35rem 0.95rem;
            border-radius: var(--radius-pill);
            background: rgba(225, 29, 72, 0.08);
            color: var(--brand-primary);
            font-size: 0.85rem;
            font-weight: 700;
            margin-bottom: 0.85rem;
        }
        .section-header h2 {
            font-size: 1.85rem;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 0.75rem;
        }
        .section-header p {
            color: var(--text-muted);
            max-width: 720px;
            margin: 0 auto;
            font-size: 1rem;
        }

        /* 首屏指标看板 (Section 1) */
        .hero-dashboard-section {
            padding: 3.5rem 0 3rem;
            background: radial-gradient(circle at 80% 20%, rgba(251, 113, 133, 0.08) 0%, transparent 50%),
                        radial-gradient(circle at 20% 80%, rgba(225, 29, 72, 0.05) 0%, transparent 60%);
        }
        .hero-h1 {
            font-size: 2.55rem;
            font-weight: 900;
            line-height: 1.35;
            color: var(--text-main);
            letter-spacing: -0.02em;
            margin-bottom: 1.25rem;
        }
        .hero-lead {
            font-size: 1.15rem;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 2rem;
        }
        .metric-banner {
            background: var(--bg-contrast);
            border-radius: var(--radius-card);
            padding: 2rem;
            color: #ffffff;
            box-shadow: 0 15px 35px -5px rgba(15, 23, 42, 0.25);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .metric-num {
            font-size: 2.25rem;
            font-weight: 800;
            background: linear-gradient(135deg, #FB7185, #F59E0B);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.2;
        }
        .metric-label {
            font-size: 0.88rem;
            color: #94A3B8;
            margin-top: 0.35rem;
        }

        /* 核心矩阵 (Section 2) */
        .matrix-icon {
            width: 58px;
            height: 58px;
            border-radius: 16px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.7rem;
            margin-bottom: 1.25rem;
            background: rgba(225, 29, 72, 0.1);
            color: var(--brand-primary);
        }

        /* 性能对比 (Section 3) */
        .comparison-table-wrap {
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--border-soft);
            background: #ffffff;
        }
        .comparison-table th {
            background: #F1F5F9;
            padding: 1.1rem;
            font-weight: 700;
            text-align: center;
        }
        .comparison-table td {
            padding: 1.1rem;
            vertical-align: middle;
            text-align: center;
            border-bottom: 1px solid #F1F5F9;
        }
        .highlight-col {
            background: rgba(225, 29, 72, 0.03);
            font-weight: 700;
            color: var(--brand-primary);
        }

        /* 里程碑 (Section 4) */
        .timeline-item {
            position: relative;
            padding-left: 2.5rem;
            margin-bottom: 2rem;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: 0.5rem;
            top: 0.35rem;
            bottom: -2rem;
            width: 2px;
            background: var(--border-soft);
        }
        .timeline-item:last-child::before {
            display: none;
        }
        .timeline-dot {
            position: absolute;
            left: 0;
            top: 0.25rem;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: var(--brand-primary);
            border: 3px solid #FFE4E6;
            box-shadow: 0 0 0 2px rgba(225, 29, 72, 0.2);
        }

        /* 综合资讯 (Section 5) */
        .briefing-card {
            border-left: 4px solid var(--brand-primary);
        }

        /* 保障体系 (Section 6) */
        .shield-badge {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(225, 29, 72, 0.12), rgba(245, 158, 11, 0.12));
            color: var(--brand-primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 1rem;
        }

        /* 场景筛选 (Section 7) */
        .scenario-pill {
            cursor: pointer;
            padding: 0.75rem 1.4rem;
            border-radius: var(--radius-pill);
            background: #ffffff;
            border: 1px solid var(--border-soft);
            font-weight: 600;
            transition: all 0.25s ease;
        }
        .scenario-pill.active, .scenario-pill:hover {
            background: var(--brand-gradient);
            color: #ffffff;
            border-color: transparent;
            box-shadow: 0 4px 12px var(--brand-accent-glow);
        }

        /* 新手引导 (Section 8) */
        .step-number {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--brand-gradient);
            color: #ffffff;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1rem;
        }

        /* FAQ (Section 9) */
        .accordion-button:not(.collapsed) {
            color: var(--brand-primary);
            background-color: rgba(225, 29, 72, 0.05);
            box-shadow: none;
        }
        .accordion-button:focus {
            box-shadow: none;
            border-color: rgba(225, 29, 72, 0.3);
        }
        .accordion-item {
            border-radius: 1rem !important;
            border: 1px solid var(--border-soft);
            overflow: hidden;
            margin-bottom: 0.75rem;
        }

        /* 用户反馈 (Section 10) */
        .pulse-indicator {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #10B981;
            margin-right: 6px;
            box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.25);
        }

        /* 转化表单 (Section 11) */
        .conversion-box {
            background: var(--brand-gradient);
            border-radius: 1.75rem;
            padding: 3.5rem 2.5rem;
            color: #ffffff;
            box-shadow: 0 20px 40px -10px rgba(225, 29, 72, 0.45);
        }

        /* 页脚 */
        .site-footer {
            background: #0B1120;
            color: #94A3B8;
            padding: 4rem 0 2rem;
            border-top: 1px solid #1E293B;
        }
        .footer-brand {
            color: #ffffff;
            font-size: 1.35rem;
            font-weight: 800;
        }
        .footer-link {
            color: #94A3B8;
            display: block;
            margin-bottom: 0.5rem;
            transition: color 0.2s ease;
        }
        .footer-link:hover {
            color: var(--brand-coral);
        }
        .footer-bottom {
            margin-top: 3.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.85rem;
        }

/* roulang page: category2 */
:root {
      --brand-primary: #E11D48;
      --brand-dark: #BE185D;
      --brand-coral: #FB7185;
      --brand-amber: #F59E0B;
      --brand-emerald: #10B981;
      --brand-gradient: linear-gradient(135deg, #E11D48 0%, #BE185D 100%);
      --brand-gradient-hover: linear-gradient(135deg, #F43F5E 0%, #9F1239 100%);
      --brand-accent-glow: rgba(225, 29, 72, 0.28);
      --bg-body: #F8FAFC;
      --bg-surface: #FFFFFF;
      --bg-contrast: #0F172A;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --border-soft: #E2E8F0;
      --radius-card: 1.25rem;
      --radius-pill: 9999px;
      --shadow-subtle: 0 10px 25px -5px rgba(225, 29, 72, 0.06), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
      --shadow-float: 0 20px 30px -10px rgba(225, 29, 72, 0.16), 0 10px 15px -5px rgba(15, 23, 42, 0.05);
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
      background-color: var(--bg-body);
      color: var(--text-main);
      line-height: 1.8;
      letter-spacing: 0.01em;
      overflow-x: hidden;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    
    /* 顶部导航栏 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1050;
      background: rgba(255, 255, 255, 0.88);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.03);
    }
    .navbar-brand {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--brand-primary);
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
    }
    .navbar-brand .brand-badge {
      background: var(--brand-gradient);
      color: #ffffff;
      width: 38px;
      height: 38px;
      border-radius: 12px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 1.15rem;
      box-shadow: 0 4px 12px var(--brand-accent-glow);
    }
    .nav-link {
      font-weight: 500;
      color: var(--text-main);
      padding: 0.6rem 1.1rem !important;
      border-radius: var(--radius-pill);
      transition: all 0.2s ease;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--brand-primary);
      background: rgba(225, 29, 72, 0.06);
    }

    /* 按钮规范 */
    .btn-pill {
      border-radius: var(--radius-pill);
      padding: 0.65rem 1.5rem;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .btn-brand-primary {
      background: var(--brand-gradient);
      color: #ffffff;
      border: none;
      box-shadow: 0 4px 14px var(--brand-accent-glow);
    }
    .btn-brand-primary:hover {
      background: var(--brand-gradient-hover);
      color: #ffffff;
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(225, 29, 72, 0.35);
    }
    .btn-brand-primary:active {
      transform: translateY(1px);
    }
    .btn-brand-outline {
      background: transparent;
      color: var(--brand-primary);
      border: 1.5px solid var(--brand-primary);
    }
    .btn-brand-outline:hover {
      background: rgba(225, 29, 72, 0.08);
      color: var(--brand-dark);
      border-color: var(--brand-dark);
      transform: translateY(-2px);
    }

    /* 统一卡片 */
    .custom-card {
      background: var(--bg-surface);
      border-radius: var(--radius-card);
      border: 1px solid var(--border-soft);
      box-shadow: var(--shadow-subtle);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .custom-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-float);
      border-color: rgba(225, 29, 72, 0.2);
    }

    /* 头部横幅与面包屑 */
    .category-hero-bar {
      background: linear-gradient(180deg, #FFFFFF 0%, #F1F5F9 100%);
      border-bottom: 1px solid var(--border-soft);
      padding: 2.8rem 0 3.2rem;
    }
    .breadcrumb-custom {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      font-size: 0.88rem;
      color: var(--text-muted);
      margin-bottom: 1rem;
    }
    .breadcrumb-custom a:hover {
      color: var(--brand-primary);
    }
    .status-dashboard-panel {
      background: var(--bg-contrast);
      color: #ffffff;
      border-radius: var(--radius-card);
      padding: 1.6rem 2rem;
      box-shadow: 0 15px 30px rgba(15, 23, 42, 0.15);
      border: 1px solid rgba(255, 255, 255, 0.08);
    }
    .pulse-dot {
      display: inline-block;
      width: 10px;
      height: 10px;
      background-color: var(--brand-emerald);
      border-radius: 50%;
      box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
      animation: pulse-green 2s infinite;
    }
    @keyframes pulse-green {
      0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
      70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(16, 185, 129, 0); }
      100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
    }

    /* 监控卡片微立体感 */
    .metric-bubble-card {
      background: #FFFFFF;
      border: 1px solid var(--border-soft);
      border-radius: var(--radius-card);
      padding: 1.5rem;
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }
    .metric-bubble-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 4px;
      height: 100%;
      background: var(--brand-emerald);
    }
    .metric-bubble-card.warning::before {
      background: var(--brand-amber);
    }

    /* 专线列表卡片 */
    .node-row-item {
      background: #FFFFFF;
      border: 1px solid var(--border-soft);
      border-radius: var(--radius-card);
      padding: 1.6rem;
      margin-bottom: 1.25rem;
      transition: all 0.3s ease;
    }
    .node-row-item:hover {
      border-color: var(--brand-coral);
      box-shadow: var(--shadow-float);
      transform: translateY(-3px);
    }
    .badge-latency {
      background-color: #ECFDF5;
      color: #059669;
      font-weight: 700;
      border-radius: var(--radius-pill);
      padding: 0.35rem 0.8rem;
      font-size: 0.85rem;
    }
    .badge-protocol {
      background-color: #EFF6FF;
      color: #2563EB;
      font-weight: 600;
      border-radius: var(--radius-pill);
      padding: 0.35rem 0.8rem;
      font-size: 0.85rem;
    }
    .badge-encryption {
      background-color: #FFF1F2;
      color: var(--brand-primary);
      font-weight: 600;
      border-radius: var(--radius-pill);
      padding: 0.35rem 0.8rem;
      font-size: 0.85rem;
    }

    /* 多端兼容矩阵 */
    .device-grid-icon {
      width: 60px;
      height: 60px;
      border-radius: 18px;
      background: rgba(225, 29, 72, 0.08);
      color: var(--brand-primary);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 1.8rem;
      margin-bottom: 1.2rem;
    }

    /* 排查步骤卡片 */
    .trouble-step-badge {
      width: 38px;
      height: 38px;
      background: var(--brand-gradient);
      color: #ffffff;
      font-weight: 800;
      border-radius: 12px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      margin-bottom: 1rem;
    }

    /* 页脚 */
    .footer-wrap {
      background: #FFFFFF;
      border-top: 1px solid var(--border-soft);
      padding: 4.5rem 0 2rem;
      margin-top: 5rem;
    }
    .footer-brand {
      font-size: 1.3rem;
      font-weight: 800;
      color: var(--brand-primary);
    }
    .footer-title {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 1.25rem;
    }
    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 0.75rem;
    }
    .footer-links a {
      color: var(--text-muted);
      font-size: 0.92rem;
    }
    .footer-links a:hover {
      color: var(--brand-primary);
      padding-left: 4px;
    }
    .footer-bottom {
      border-top: 1px solid var(--border-soft);
      padding-top: 2rem;
      margin-top: 3.5rem;
      text-align: center;
      font-size: 0.88rem;
      color: var(--text-muted);
    }

/* roulang page: category1 */
:root {
      --brand-primary: #E11D48;
      --brand-dark: #BE185D;
      --brand-coral: #FB7185;
      --brand-amber: #F59E0B;
      --brand-gradient: linear-gradient(135deg, #E11D48 0%, #BE185D 100%);
      --brand-gradient-hover: linear-gradient(135deg, #F43F5E 0%, #9F1239 100%);
      --brand-accent-glow: rgba(225, 29, 72, 0.28);
      --bg-body: #F8FAFC;
      --bg-surface: #FFFFFF;
      --bg-contrast: #0F172A;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --border-soft: #E2E8F0;
      --radius-card: 1.25rem;
      --radius-pill: 9999px;
      --shadow-subtle: 0 10px 25px -5px rgba(225, 29, 72, 0.06), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
      --shadow-float: 0 20px 30px -10px rgba(225, 29, 72, 0.16), 0 10px 15px -5px rgba(15, 23, 42, 0.05);
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
      background-color: var(--bg-body);
      color: var(--text-main);
      line-height: 1.8;
      letter-spacing: 0.01em;
      overflow-x: hidden;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1050;
      background: rgba(255, 255, 255, 0.88);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.03);
    }
    .navbar-brand {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--brand-primary);
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
    }
    .navbar-brand .brand-badge {
      background: var(--brand-gradient);
      color: #ffffff;
      width: 38px;
      height: 38px;
      border-radius: 12px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 1.15rem;
      box-shadow: 0 4px 12px var(--brand-accent-glow);
    }
    .nav-link {
      font-weight: 500;
      color: var(--text-main);
      padding: 0.6rem 1.1rem !important;
      border-radius: var(--radius-pill);
      transition: all 0.2s ease;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--brand-primary);
      background: rgba(225, 29, 72, 0.06);
    }
    .btn-pill {
      border-radius: var(--radius-pill);
      padding: 0.65rem 1.5rem;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .btn-brand-primary {
      background: var(--brand-gradient);
      color: #ffffff;
      border: none;
      box-shadow: 0 4px 14px var(--brand-accent-glow);
    }
    .btn-brand-primary:hover {
      background: var(--brand-gradient-hover);
      color: #ffffff;
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(225, 29, 72, 0.35);
    }
    .btn-brand-primary:active {
      transform: translateY(1px);
    }
    .btn-brand-outline {
      background: transparent;
      color: var(--brand-primary);
      border: 1.5px solid var(--brand-primary);
    }
    .btn-brand-outline:hover {
      background: rgba(225, 29, 72, 0.08);
      color: var(--brand-dark);
      border-color: var(--brand-dark);
      transform: translateY(-2px);
    }
    .custom-card {
      background: var(--bg-surface);
      border-radius: var(--radius-card);
      border: 1px solid var(--border-soft);
      box-shadow: var(--shadow-subtle);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .custom-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-float);
      border-color: rgba(225, 29, 72, 0.2);
    }
    .section-header {
      margin-bottom: 2.5rem;
    }
    .section-header .sub-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
      padding: 0.35rem 0.95rem;
      border-radius: var(--radius-pill);
      background: rgba(225, 29, 72, 0.08);
      color: var(--brand-primary);
      font-size: 0.85rem;
      font-weight: 700;
      margin-bottom: 0.85rem;
    }
    .section-header h2 {
      font-size: 1.85rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 0.75rem;
    }
    .section-header p {
      color: var(--text-muted);
      max-width: 760px;
      margin: 0 auto;
      font-size: 0.98rem;
    }
    /* 分类专属头部 */
    .cat-header-wrap {
      background: linear-gradient(180deg, rgba(225, 29, 72, 0.04) 0%, rgba(248, 250, 252, 0) 100%);
      padding: 3.25rem 0 2rem;
      border-bottom: 1px solid var(--border-soft);
    }
    .cat-breadcrumb {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      font-size: 0.88rem;
      color: var(--text-muted);
      margin-bottom: 1rem;
    }
    .cat-breadcrumb a:hover {
      color: var(--brand-primary);
    }
    .cat-h1 {
      font-size: 2.35rem;
      font-weight: 900;
      color: var(--text-main);
      letter-spacing: -0.01em;
      margin-bottom: 1rem;
    }
    .cat-meta-pills {
      display: flex;
      flex-wrap: wrap;
      gap: 0.75rem;
      margin-top: 1.25rem;
    }
    .meta-pill {
      background: #FFFFFF;
      border: 1px solid var(--border-soft);
      border-radius: var(--radius-pill);
      padding: 0.35rem 0.95rem;
      font-size: 0.82rem;
      font-weight: 600;
      color: var(--text-main);
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
      box-shadow: 0 2px 6px rgba(0, 0, 0, 0.02);
    }
    .meta-pill i {
      color: var(--brand-primary);
    }
    /* 筛选工具条 */
    .cat-filter-bar {
      background: var(--bg-surface);
      border-radius: 1.25rem;
      padding: 1.25rem 1.75rem;
      border: 1px solid var(--border-soft);
      box-shadow: var(--shadow-subtle);
      margin-top: -1.75rem;
      position: relative;
      z-index: 10;
    }
    .filter-group-title {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--text-muted);
      margin-bottom: 0;
      min-width: 70px;
    }
    .filter-chip {
      padding: 0.35rem 0.85rem;
      border-radius: var(--radius-pill);
      font-size: 0.84rem;
      font-weight: 600;
      color: var(--text-main);
      background: #F1F5F9;
      border: 1px solid transparent;
      display: inline-block;
      cursor: pointer;
      transition: all 0.2s;
    }
    .filter-chip:hover, .filter-chip.active {
      background: var(--brand-primary);
      color: #FFFFFF;
    }
    /* 资源卡片主体 */
    .resource-card {
      background: var(--bg-surface);
      border-radius: var(--radius-card);
      border: 1px solid var(--border-soft);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      height: 100%;
      box-shadow: var(--shadow-subtle);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .resource-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-float);
      border-color: rgba(225, 29, 72, 0.3);
    }
    .card-thumb-box {
      height: 185px;
      position: relative;
      background: #0F172A;
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
    }
    .thumb-glow {
      position: absolute;
      width: 140px;
      height: 140px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(225, 29, 72, 0.45) 0%, transparent 70%);
      filter: blur(20px);
    }
    .thumb-badge-top {
      position: absolute;
      top: 12px;
      left: 12px;
      background: rgba(15, 23, 42, 0.8);
      backdrop-filter: blur(8px);
      color: #FFFFFF;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 0.2rem 0.6rem;
      border-radius: 6px;
      border: 1px solid rgba(255, 255, 255, 0.15);
    }
    .thumb-badge-res {
      position: absolute;
      bottom: 12px;
      right: 12px;
      background: var(--brand-gradient);
      color: #FFFFFF;
      font-size: 0.72rem;
      font-weight: 800;
      padding: 0.2rem 0.55rem;
      border-radius: var(--radius-pill);
      box-shadow: 0 2px 8px var(--brand-accent-glow);
    }
    .card-thumb-box .play-icon-glow {
      font-size: 2.8rem;
      color: rgba(255, 255, 255, 0.9);
      position: relative;
      z-index: 2;
      transition: transform 0.3s ease;
    }
    .resource-card:hover .play-icon-glow {
      transform: scale(1.15);
      color: #FFFFFF;
    }
    .resource-body {
      padding: 1.35rem;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .resource-title {
      font-size: 1.08rem;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.55;
      margin-bottom: 0.65rem;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .resource-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 1rem;
      flex-grow: 1;
    }
    .resource-footer {
      border-top: 1px solid #F1F5F9;
      padding-top: 0.85rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 0.82rem;
    }
    /* 专区特性指标 */
    .metric-bubble-card {
      background: #FFFFFF;
      border-radius: var(--radius-card);
      border: 1px solid var(--border-soft);
      padding: 2rem 1.75rem;
      position: relative;
      overflow: hidden;
      box-shadow: var(--shadow-subtle);
    }
    .bubble-icon {
      width: 52px;
      height: 52px;
      border-radius: 16px;
      background: rgba(225, 29, 72, 0.08);
      color: var(--brand-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 1.25rem;
    }
    /* 专题聚光灯 */
    .spotlight-banner {
      background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
      border-radius: 1.75rem;
      padding: 3.5rem 3rem;
      color: #FFFFFF;
      position: relative;
      overflow: hidden;
      box-shadow: 0 20px 40px -10px rgba(15, 23, 42, 0.35);
    }
    .spotlight-banner::after {
      content: "";
      position: absolute;
      top: -50%;
      right: -10%;
      width: 450px;
      height: 450px;
      background: radial-gradient(circle, rgba(225, 29, 72, 0.35) 0%, transparent 70%);
      border-radius: 50%;
      pointer-events: none;
    }
    /* FAQ 手风琴 */
    .accordion-button:not(.collapsed) {
      background-color: rgba(225, 29, 72, 0.05);
      color: var(--brand-primary);
      font-weight: 700;
      box-shadow: none;
    }
    .accordion-button:focus {
      box-shadow: none;
      border-color: rgba(225, 29, 72, 0.25);
    }
    .accordion-item {
      border: 1px solid var(--border-soft);
      border-radius: 1rem !important;
      margin-bottom: 0.85rem;
      overflow: hidden;
    }
    /* 分页器 */
    .pagination-custom .page-link {
      border-radius: var(--radius-pill);
      margin: 0 0.25rem;
      color: var(--text-main);
      border: 1px solid var(--border-soft);
      font-weight: 600;
      padding: 0.55rem 1.15rem;
    }
    .pagination-custom .page-item.active .page-link {
      background: var(--brand-gradient);
      border-color: transparent;
      color: #FFFFFF;
      box-shadow: 0 4px 12px var(--brand-accent-glow);
    }
    /* Footer */
    .footer-wrap {
      background: #FFFFFF;
      border-top: 1px solid var(--border-soft);
      padding: 4.5rem 0 2rem;
      margin-top: 5rem;
    }
    .footer-brand {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--brand-primary);
    }
    .footer-title {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 1.25rem;
    }
    .footer-links {
      list-style: none;
      padding-left: 0;
      margin-bottom: 0;
    }
    .footer-links li {
      margin-bottom: 0.65rem;
    }
    .footer-links a {
      color: var(--text-muted);
      font-size: 0.9rem;
    }
    .footer-links a:hover {
      color: var(--brand-primary);
    }
    .footer-bottom {
      border-top: 1px solid var(--border-soft);
      padding-top: 1.75rem;
      margin-top: 3.5rem;
    }
    @media (max-width: 991.98px) {
      .cat-h1 { font-size: 1.85rem; }
      .spotlight-banner { padding: 2.25rem 1.75rem; }
    }

/* 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}