/* roulang page: index */
:root {
      --primary-color: #1e40af;
      --primary-hover: #1d4ed8;
      --primary-soft: #eff6ff;
      --accent-color: #0284c7;
      --slate-900: #0f172a;
      --slate-800: #1e293b;
      --slate-700: #334155;
      --slate-600: #475569;
      --slate-500: #64748b;
      --slate-100: #f1f5f9;
      --slate-50: #f8fafc;
      --border-color: #e2e8f0;
      --card-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.05), 0 8px 10px -6px rgba(15, 23, 42, 0.03);
      --card-shadow-hover: 0 20px 30px -10px rgba(30, 64, 175, 0.12), 0 10px 15px -5px rgba(15, 23, 42, 0.04);
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --radius-pill: 9999px;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
      color: var(--slate-700);
      background-color: #ffffff;
      line-height: 1.65;
      overflow-x: hidden;
    }

    /* 顶部透明玻璃沉浸导航 */
    .glass-nav-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 1050;
      transition: all 0.35s ease;
      background: rgba(255, 255, 255, 0.82);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      box-shadow: 0 4px 20px rgba(15, 23, 42, 0.04);
    }
    .navbar-brand {
      font-weight: 700;
      font-size: 1.18rem;
      color: var(--slate-900) !important;
      letter-spacing: -0.02em;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .navbar-brand i {
      color: var(--primary-color);
      font-size: 1.35rem;
    }
    .nav-link {
      font-weight: 500;
      font-size: 0.96rem;
      color: var(--slate-600) !important;
      padding: 0.55rem 1rem !important;
      transition: color 0.2s ease;
      position: relative;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary-color) !important;
    }
    .nav-link.active::after {
      content: '';
      position: absolute;
      bottom: 2px;
      left: 1rem;
      right: 1rem;
      height: 2px;
      background: var(--primary-color);
      border-radius: 2px;
    }

    /* 通用板块与排版 */
    section {
      padding: 5rem 0;
      position: relative;
    }
    .section-alt {
      background-color: var(--slate-50);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .section-header {
      margin-bottom: 3rem;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.82rem;
      font-weight: 700;
      color: var(--primary-color);
      background-color: var(--primary-soft);
      padding: 0.28rem 0.85rem;
      border-radius: var(--radius-pill);
      text-transform: uppercase;
      letter-spacing: 0.06em;
      margin-bottom: 0.75rem;
    }
    .section-title {
      font-weight: 700;
      font-size: 2.1rem;
      color: var(--slate-900);
      letter-spacing: -0.02em;
      margin-bottom: 0.85rem;
    }
    .section-intro {
      font-size: 1.05rem;
      color: var(--slate-500);
      max-width: 720px;
      margin-left: auto;
      margin-right: auto;
      line-height: 1.7;
    }

    /* Hero：裂变邀请首屏 */
    .hero-section {
      padding-top: 8.5rem;
      padding-bottom: 5.5rem;
      background: linear-gradient(180deg, #f0f7ff 0%, #ffffff 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      background-blend-mode: overlay;
      position: relative;
    }
    .hero-h1 {
      font-size: 2.65rem;
      font-weight: 800;
      color: var(--slate-900);
      letter-spacing: -0.03em;
      line-height: 1.25;
      margin-bottom: 1.25rem;
    }
    .hero-lead {
      font-size: 1.08rem;
      color: var(--slate-600);
      line-height: 1.8;
      margin-bottom: 2rem;
    }
    .fission-card {
      background: rgba(255, 255, 255, 0.95);
      border: 1px solid rgba(226, 232, 240, 0.9);
      border-radius: var(--radius-lg);
      padding: 2.2rem;
      box-shadow: 0 20px 40px -15px rgba(30, 64, 175, 0.12);
      backdrop-filter: blur(8px);
    }
    .progress-track {
      height: 14px;
      background-color: #e2e8f0;
      border-radius: var(--radius-pill);
      overflow: hidden;
      margin: 1.2rem 0;
    }
    .progress-bar-fill {
      width: 78%;
      height: 100%;
      background: linear-gradient(90deg, #3b82f6 0%, #1e40af 100%);
      border-radius: var(--radius-pill);
      transition: width 1s ease-in-out;
    }

    /* 按钮与组件 */
    .btn-primary-custom {
      background-color: var(--primary-color);
      border: none;
      color: #ffffff;
      font-weight: 600;
      padding: 0.85rem 1.85rem;
      border-radius: var(--radius-md);
      transition: all 0.25s ease;
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
    }
    .btn-primary-custom:hover {
      background-color: var(--primary-hover);
      color: #ffffff;
      transform: translateY(-2px);
      box-shadow: 0 10px 18px -4px rgba(30, 64, 175, 0.3);
    }
    .btn-outline-custom {
      border: 1px solid var(--border-color);
      background: #ffffff;
      color: var(--slate-700);
      font-weight: 600;
      padding: 0.85rem 1.75rem;
      border-radius: var(--radius-md);
      transition: all 0.2s ease;
    }
    .btn-outline-custom:hover {
      border-color: var(--primary-color);
      color: var(--primary-color);
      background-color: var(--primary-soft);
    }

    /* 卡片体系 */
    .modern-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.75rem;
      height: 100%;
      transition: all 0.25s ease;
      box-shadow: var(--card-shadow);
    }
    .modern-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--card-shadow-hover);
      border-color: #cbd5e1;
    }
    .card-icon-box {
      width: 52px;
      height: 52px;
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 1.25rem;
      background: var(--primary-soft);
      color: var(--primary-color);
    }

    /* 标签云 */
    .tag-cloud-chip {
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
      padding: 0.5rem 1.1rem;
      margin: 0.35rem;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-pill);
      color: var(--slate-700);
      font-size: 0.92rem;
      font-weight: 500;
      transition: all 0.2s ease;
      text-decoration: none;
    }
    .tag-cloud-chip:hover {
      background: var(--primary-soft);
      color: var(--primary-color);
      border-color: #bfdbfe;
      transform: translateY(-1px);
    }

    /* 表单与交互 */
    .form-control-custom {
      padding: 0.8rem 1.15rem;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      transition: all 0.2s ease;
      background-color: #ffffff;
    }
    .form-control-custom:focus {
      outline: none;
      border-color: var(--primary-color);
      box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.12);
    }

    /* 页脚 */
    .footer-section {
      background-color: var(--slate-900);
      color: var(--slate-500);
      padding: 4.5rem 0 2.5rem;
      font-size: 0.92rem;
    }
    .footer-title {
      color: #ffffff;
      font-weight: 700;
      font-size: 1.05rem;
      margin-bottom: 1.2rem;
    }
    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 0.65rem;
    }
    .footer-links a {
      color: #94a3b8;
      text-decoration: none;
      transition: color 0.2s ease;
    }
    .footer-links a:hover {
      color: #ffffff;
    }

    @media (max-width: 991.98px) {
      .hero-h1 { font-size: 2.15rem; }
      section { padding: 4rem 0; }
    }
    @media (max-width: 575.92px) {
      .hero-h1 { font-size: 1.85rem; }
      .fission-card { padding: 1.5rem; }
    }

/* roulang page: category1 */
:root {
      --primary-color: #1e40af;
      --primary-hover: #1d4ed8;
      --primary-soft: #eff6ff;
      --accent-color: #0284c7;
      --slate-900: #0f172a;
      --slate-800: #1e293b;
      --slate-700: #334155;
      --slate-600: #475569;
      --slate-500: #64748b;
      --slate-100: #f1f5f9;
      --slate-50: #f8fafc;
      --border-color: #e2e8f0;
      --card-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.05), 0 8px 10px -6px rgba(15, 23, 42, 0.03);
      --card-shadow-hover: 0 20px 30px -10px rgba(30, 64, 175, 0.12), 0 10px 15px -5px rgba(15, 23, 42, 0.04);
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --radius-pill: 9999px;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
      color: var(--slate-700);
      background-color: #ffffff;
      line-height: 1.65;
      overflow-x: hidden;
    }
    .glass-nav-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 1050;
      transition: all 0.35s ease;
      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 rgba(15, 23, 42, 0.04);
    }
    .navbar-brand {
      font-weight: 700;
      font-size: 1.15rem;
      color: var(--slate-900) !important;
      letter-spacing: -0.02em;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .navbar-brand i {
      color: var(--primary-color);
      font-size: 1.35rem;
    }
    .nav-link {
      font-weight: 500;
      font-size: 0.95rem;
      color: var(--slate-600) !important;
      padding: 0.55rem 1rem !important;
      transition: color 0.2s ease;
      position: relative;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary-color) !important;
    }
    .nav-link.active::after {
      content: '';
      position: absolute;
      bottom: 2px;
      left: 1rem;
      right: 1rem;
      height: 2px;
      background: var(--primary-color);
      border-radius: 2px;
    }
    section {
      padding: 5rem 0;
      position: relative;
    }
    .section-alt {
      background-color: var(--slate-50);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .section-header {
      margin-bottom: 3rem;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.82rem;
      font-weight: 700;
      color: var(--primary-color);
      background-color: var(--primary-soft);
      padding: 0.28rem 0.85rem;
      border-radius: var(--radius-pill);
      letter-spacing: 0.05em;
      margin-bottom: 0.75rem;
    }
    .section-title {
      font-weight: 700;
      font-size: 2.1rem;
      color: var(--slate-900);
      letter-spacing: -0.02em;
      margin-bottom: 0.85rem;
    }
    .section-intro {
      font-size: 1.05rem;
      color: var(--slate-500);
      max-width: 760px;
      margin-left: auto;
      margin-right: auto;
      line-height: 1.7;
    }
    .category-hero {
      padding-top: 8rem;
      padding-bottom: 4.5rem;
      background: linear-gradient(180deg, #f0f7ff 0%, #ffffff 100%), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      background-blend-mode: overlay;
      position: relative;
    }
    .breadcrumb-nav a {
      color: var(--slate-500);
      text-decoration: none;
      font-size: 0.9rem;
    }
    .breadcrumb-nav a:hover {
      color: var(--primary-color);
    }
    .booking-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 2.2rem;
      box-shadow: 0 20px 40px -15px rgba(30, 64, 175, 0.12);
    }
    .time-slot-pill {
      display: inline-block;
      padding: 0.45rem 0.9rem;
      font-size: 0.85rem;
      background: var(--slate-100);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      color: var(--slate-700);
      margin: 0.25rem;
      cursor: pointer;
      transition: all 0.2s;
    }
    .time-slot-pill:hover, .time-slot-pill.active {
      background: var(--primary-soft);
      border-color: var(--primary-color);
      color: var(--primary-color);
      font-weight: 600;
    }
    .btn-primary-custom {
      background-color: var(--primary-color);
      border: none;
      color: #ffffff;
      font-weight: 600;
      padding: 0.85rem 1.85rem;
      border-radius: var(--radius-md);
      transition: all 0.25s ease;
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      text-decoration: none;
    }
    .btn-primary-custom:hover {
      background-color: var(--primary-hover);
      color: #ffffff;
      transform: translateY(-2px);
      box-shadow: 0 10px 18px -4px rgba(30, 64, 175, 0.3);
    }
    .btn-outline-custom {
      border: 1px solid var(--border-color);
      background: #ffffff;
      color: var(--slate-700);
      font-weight: 600;
      padding: 0.85rem 1.75rem;
      border-radius: var(--radius-md);
      transition: all 0.2s ease;
      text-decoration: none;
    }
    .btn-outline-custom:hover {
      border-color: var(--primary-color);
      color: var(--primary-color);
      background-color: var(--primary-soft);
    }
    .modern-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.75rem;
      height: 100%;
      transition: all 0.25s ease;
      box-shadow: var(--card-shadow);
    }
    .modern-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--card-shadow-hover);
      border-color: #cbd5e1;
    }
    .card-cover-img {
      border-radius: var(--radius-sm);
      width: 100%;
      height: 220px;
      object-fit: cover;
      margin-bottom: 1.25rem;
    }
    .badge-primary-soft {
      background: var(--primary-soft);
      color: var(--primary-color);
      font-weight: 600;
      padding: 0.35rem 0.75rem;
      border-radius: var(--radius-pill);
      font-size: 0.82rem;
    }
    .step-num-box {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary-soft);
      color: var(--primary-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1.2rem;
      margin-bottom: 1rem;
    }
    .stat-number {
      font-size: 2.4rem;
      font-weight: 800;
      color: var(--primary-color);
      line-height: 1;
      margin-bottom: 0.5rem;
    }
    .testimonial-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-left: 4px solid var(--primary-color);
      border-radius: var(--radius-md);
      padding: 1.5rem;
      height: 100%;
      box-shadow: var(--card-shadow);
    }
    .footer-section {
      background-color: #0b1329;
      color: #94a3b8;
      padding: 4.5rem 0 2rem;
      border-top: 1px solid #1e293b;
    }
    .footer-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: #f8fafc;
      margin-bottom: 1.25rem;
    }
    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 0.65rem;
    }
    .footer-links a {
      color: #94a3b8;
      text-decoration: none;
      font-size: 0.92rem;
      transition: color 0.2s ease;
    }
    .footer-links a:hover {
      color: #ffffff;
    }
    @media (max-width: 991px) {
      .category-hero {
        padding-top: 6.5rem;
      }
      .section-title {
        font-size: 1.75rem;
      }
    }

/* roulang page: category3 */
:root {
            --primary-color: #1e40af;
            --primary-hover: #1d4ed8;
            --primary-soft: #eff6ff;
            --accent-color: #0284c7;
            --slate-900: #0f172a;
            --slate-800: #1e293b;
            --slate-700: #334155;
            --slate-600: #475569;
            --slate-500: #64748b;
            --slate-100: #f1f5f9;
            --slate-50: #f8fafc;
            --border-color: #e2e8f0;
            --card-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.05), 0 8px 10px -6px rgba(15, 23, 42, 0.03);
            --card-shadow-hover: 0 20px 30px -10px rgba(30, 64, 175, 0.12), 0 10px 15px -5px rgba(15, 23, 42, 0.04);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-pill: 9999px;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
            color: var(--slate-700);
            background-color: #ffffff;
            line-height: 1.65;
            overflow-x: hidden;
        }
        .glass-nav-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            transition: all 0.35s ease;
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.85);
            box-shadow: 0 4px 20px rgba(15, 23, 42, 0.04);
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.18rem;
            color: var(--slate-900) !important;
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .navbar-brand i {
            color: var(--primary-color);
            font-size: 1.35rem;
        }
        .nav-link {
            font-weight: 500;
            font-size: 0.96rem;
            color: var(--slate-600) !important;
            padding: 0.55rem 1rem !important;
            transition: color 0.2s ease;
            position: relative;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary-color) !important;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 1rem;
            right: 1rem;
            height: 2px;
            background: var(--primary-color);
            border-radius: 2px;
        }
        section {
            padding: 5.5rem 0;
            position: relative;
        }
        .section-alt {
            background-color: var(--slate-50);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .section-header {
            margin-bottom: 3.2rem;
        }
        .section-tag {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 700;
            color: var(--primary-color);
            background-color: var(--primary-soft);
            padding: 0.3rem 0.9rem;
            border-radius: var(--radius-pill);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 0.85rem;
        }
        .section-title {
            font-weight: 700;
            font-size: 2.15rem;
            color: var(--slate-900);
            letter-spacing: -0.02em;
            margin-bottom: 0.85rem;
        }
        .section-intro {
            font-size: 1.05rem;
            color: var(--slate-500);
            max-width: 740px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }
        .hero-brewing-quiz {
            padding-top: 8.5rem;
            padding-bottom: 5.5rem;
            background: linear-gradient(180deg, #f0f7ff 0%, #ffffff 100%), url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            background-blend-mode: overlay;
        }
        .hero-h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--slate-900);
            letter-spacing: -0.03em;
            line-height: 1.25;
            margin-bottom: 1.2rem;
        }
        .hero-lead {
            font-size: 1.08rem;
            color: var(--slate-600);
            line-height: 1.75;
            margin-bottom: 2.2rem;
        }
        .quiz-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 2rem;
            box-shadow: var(--card-shadow);
        }
        .quiz-option-pill {
            display: inline-block;
            padding: 0.45rem 1rem;
            font-size: 0.9rem;
            border-radius: var(--radius-pill);
            background-color: var(--slate-50);
            border: 1px solid var(--border-color);
            color: var(--slate-700);
            margin: 0.25rem 0.35rem 0.25rem 0;
            cursor: pointer;
            transition: all 0.2s ease;
        }
        .quiz-option-pill:hover, .quiz-option-pill.active {
            background-color: var(--primary-soft);
            border-color: var(--primary-color);
            color: var(--primary-color);
            font-weight: 600;
        }
        .quiz-preview-panel {
            background: #ffffff;
            border: 1px solid rgba(2, 132, 199, 0.25);
            border-radius: var(--radius-lg);
            padding: 2rem;
            box-shadow: 0 15px 35px -10px rgba(30, 64, 175, 0.1);
            position: relative;
        }
        .preview-badge {
            position: absolute;
            top: 1.2rem;
            right: 1.2rem;
            background: #dbeafe;
            color: #1e40af;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 0.25rem 0.75rem;
            border-radius: var(--radius-pill);
        }
        .btn-primary-custom {
            background-color: var(--primary-color);
            border: none;
            color: #ffffff;
            font-weight: 600;
            padding: 0.85rem 1.85rem;
            border-radius: var(--radius-md);
            transition: all 0.25s ease;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            text-decoration: none;
        }
        .btn-primary-custom:hover {
            background-color: var(--primary-hover);
            color: #ffffff;
            transform: translateY(-2px);
            box-shadow: 0 10px 18px -4px rgba(30, 64, 175, 0.3);
        }
        .btn-outline-custom {
            border: 1px solid var(--border-color);
            background: #ffffff;
            color: var(--slate-700);
            font-weight: 600;
            padding: 0.85rem 1.75rem;
            border-radius: var(--radius-md);
            transition: all 0.2s ease;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
        }
        .btn-outline-custom:hover {
            border-color: var(--primary-color);
            color: var(--primary-color);
            background-color: var(--primary-soft);
        }
        .modern-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 1.8rem;
            height: 100%;
            transition: all 0.25s ease;
            box-shadow: var(--card-shadow);
        }
        .modern-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--card-shadow-hover);
            border-color: #bfdbfe;
        }
        .pain-point-item {
            padding: 1.25rem;
            border-radius: var(--radius-md);
            background: #ffffff;
            border-left: 4px solid #ef4444;
            box-shadow: var(--card-shadow);
            margin-bottom: 1rem;
        }
        .step-num-badge {
            width: 44px;
            height: 44px;
            background: var(--primary-soft);
            color: var(--primary-color);
            font-size: 1.2rem;
            font-weight: 700;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.2rem;
        }
        .metric-banner {
            background: linear-gradient(135deg, #1e40af 0%, #0284c7 100%);
            border-radius: var(--radius-lg);
            color: #ffffff;
            padding: 3rem 2rem;
        }
        .metric-value {
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1;
            margin-bottom: 0.5rem;
        }
        .metric-label {
            font-size: 0.95rem;
            opacity: 0.9;
        }
        .testimonial-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 1.75rem;
            box-shadow: var(--card-shadow);
            position: relative;
        }
        .testimonial-card::before {
            content: "“";
            font-size: 3.5rem;
            color: #cbd5e1;
            position: absolute;
            top: 0.5rem;
            right: 1.2rem;
            line-height: 1;
            font-family: Georgia, serif;
        }
        .user-avatar {
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background-color: var(--primary-soft);
            color: var(--primary-color);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }
        .persona-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 1.6rem;
            text-align: center;
            transition: all 0.25s ease;
        }
        .persona-card:hover {
            border-color: var(--primary-color);
            box-shadow: var(--card-shadow-hover);
        }
        .persona-icon {
            font-size: 2.2rem;
            color: var(--accent-color);
            margin-bottom: 1rem;
        }
        .article-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--card-shadow);
            transition: all 0.25s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .article-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--card-shadow-hover);
        }
        .article-img-wrap {
            height: 200px;
            overflow: hidden;
            background-color: #f1f5f9;
        }
        .article-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .article-card:hover .article-img-wrap img {
            transform: scale(1.05);
        }
        .article-body {
            padding: 1.5rem;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }
        .spec-table-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--card-shadow);
        }
        .spec-table {
            margin-bottom: 0;
        }
        .spec-table th {
            background-color: #f8fafc;
            color: var(--slate-900);
            font-weight: 600;
            padding: 1rem 1.25rem;
            border-bottom: 2px solid var(--border-color);
        }
        .spec-table td {
            padding: 1rem 1.25rem;
            vertical-align: middle;
            color: var(--slate-600);
            border-bottom: 1px solid var(--border-color);
        }
        .cta-box-gradient {
            background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%);
            border-radius: var(--radius-lg);
            padding: 4rem 3rem;
            color: #ffffff;
            box-shadow: 0 20px 40px rgba(15, 23, 42, 0.2);
        }
        .footer-section {
            background-color: #0b1120;
            color: #94a3b8;
            padding: 4.5rem 0 2rem;
            border-top: 1px solid #1e293b;
        }
        .footer-title {
            color: #ffffff;
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: 1.2rem;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 0.65rem;
        }
        .footer-links a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 0.92rem;
            transition: color 0.2s ease;
        }
        .footer-links a:hover {
            color: #ffffff;
        }
        .text-slate-500 { color: #64748b !important; }
        .text-slate-400 { color: #94a3b8 !important; }
        @media (max-width: 991.98px) {
            .hero-h1 { font-size: 2.1rem; }
            section { padding: 4rem 0; }
            .cta-box-gradient { padding: 2.5rem 1.5rem; }
            .preview-badge { position: static; display: inline-block; margin-bottom: 1rem; }
        }

/* roulang page: category2 */
:root {
        --primary-color: #1e40af;
        --primary-hover: #1d4ed8;
        --primary-soft: #eff6ff;
        --accent-color: #0284c7;
        --slate-900: #0f172a;
        --slate-800: #1e293b;
        --slate-700: #334155;
        --slate-600: #475569;
        --slate-500: #64748b;
        --slate-100: #f1f5f9;
        --slate-50: #f8fafc;
        --border-color: #e2e8f0;
        --card-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.05), 0 8px 10px -6px rgba(15, 23, 42, 0.03);
        --card-shadow-hover: 0 20px 30px -10px rgba(30, 64, 175, 0.12), 0 10px 15px -5px rgba(15, 23, 42, 0.04);
        --radius-sm: 8px;
        --radius-md: 12px;
        --radius-lg: 16px;
        --radius-pill: 9999px;
    }

    body {
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
        color: var(--slate-700);
        background-color: #ffffff;
        line-height: 1.65;
        overflow-x: hidden;
    }

    a {
        color: var(--primary-color);
        text-decoration: none;
        transition: color 0.2s ease;
    }
    a:hover {
        color: var(--primary-hover);
    }

    /* 顶部透明玻璃沉浸导航 */
    .glass-nav-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1050;
        transition: all 0.35s ease;
        background: rgba(255, 255, 255, 0.88);
        backdrop-filter: blur(14px);
        -webkit-backdrop-filter: blur(14px);
        border-bottom: 1px solid rgba(226, 232, 240, 0.85);
        box-shadow: 0 4px 20px rgba(15, 23, 42, 0.04);
    }
    .navbar-brand {
        font-weight: 700;
        font-size: 1.18rem;
        color: var(--slate-900) !important;
        letter-spacing: -0.02em;
        display: flex;
        align-items: center;
        gap: 0.5rem;
    }
    .navbar-brand i {
        color: var(--primary-color);
        font-size: 1.35rem;
    }
    .nav-link {
        font-weight: 500;
        font-size: 0.96rem;
        color: var(--slate-600) !important;
        padding: 0.55rem 1rem !important;
        transition: color 0.2s ease;
        position: relative;
    }
    .nav-link:hover, .nav-link.active {
        color: var(--primary-color) !important;
    }
    .nav-link.active::after {
        content: '';
        position: absolute;
        bottom: 2px;
        left: 1rem;
        right: 1rem;
        height: 2px;
        background: var(--primary-color);
        border-radius: 2px;
    }

    /* 通用板块与排版 */
    section {
        padding: 5rem 0;
        position: relative;
    }
    .section-alt {
        background-color: var(--slate-50);
        border-top: 1px solid var(--border-color);
        border-bottom: 1px solid var(--border-color);
    }
    .section-header {
        margin-bottom: 3rem;
    }
    .section-tag {
        display: inline-block;
        font-size: 0.82rem;
        font-weight: 700;
        color: var(--primary-color);
        background-color: var(--primary-soft);
        padding: 0.28rem 0.85rem;
        border-radius: var(--radius-pill);
        text-transform: uppercase;
        letter-spacing: 0.06em;
        margin-bottom: 0.75rem;
    }
    .section-title {
        font-weight: 700;
        font-size: 2.05rem;
        color: var(--slate-900);
        letter-spacing: -0.02em;
        margin-bottom: 0.85rem;
    }
    .section-intro {
        font-size: 1.05rem;
        color: var(--slate-500);
        max-width: 720px;
        line-height: 1.7;
    }

    /* 按钮与组件 */
    .btn-primary-custom {
        background-color: var(--primary-color);
        border: none;
        color: #ffffff;
        font-weight: 600;
        padding: 0.82rem 1.8rem;
        border-radius: var(--radius-md);
        transition: all 0.25s ease;
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
    }
    .btn-primary-custom:hover {
        background-color: var(--primary-hover);
        color: #ffffff;
        transform: translateY(-2px);
        box-shadow: 0 10px 18px -4px rgba(30, 64, 175, 0.3);
    }
    .btn-outline-custom {
        border: 1px solid var(--border-color);
        background: #ffffff;
        color: var(--slate-700);
        font-weight: 600;
        padding: 0.82rem 1.7rem;
        border-radius: var(--radius-md);
        transition: all 0.2s ease;
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
    }
    .btn-outline-custom:hover {
        border-color: var(--primary-color);
        color: var(--primary-color);
        background-color: var(--primary-soft);
    }

    /* 卡片体系 */
    .modern-card {
        background: #ffffff;
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        padding: 1.75rem;
        height: 100%;
        transition: all 0.25s ease;
        box-shadow: var(--card-shadow);
    }
    .modern-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--card-shadow-hover);
        border-color: #cbd5e1;
    }
    .card-icon-box {
        width: 52px;
        height: 52px;
        border-radius: var(--radius-md);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.5rem;
        margin-bottom: 1.25rem;
        background: var(--primary-soft);
        color: var(--primary-color);
    }

    /* 分类页专属：全宽视频遮罩纪实首屏（区别于首页裂变卡片） */
    .cat2-video-hero {
        padding-top: 8.5rem;
        padding-bottom: 5rem;
        position: relative;
        background: linear-gradient(125deg, rgba(15, 23, 42, 0.88) 0%, rgba(30, 64, 175, 0.78) 100%), url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
        color: #ffffff;
        overflow: hidden;
    }
    .breadcrumb-glass {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        padding: 0.4rem 1rem;
        background: rgba(255, 255, 255, 0.12);
        backdrop-filter: blur(8px);
        border: 1px solid rgba(255, 255, 255, 0.2);
        border-radius: var(--radius-pill);
        font-size: 0.85rem;
        color: #e2e8f0;
        margin-bottom: 1.5rem;
    }
    .breadcrumb-glass a {
        color: #93c5fd;
        font-weight: 500;
    }
    .cat2-hero-h1 {
        font-size: 2.55rem;
        font-weight: 800;
        color: #ffffff;
        letter-spacing: -0.02em;
        line-height: 1.28;
        margin-bottom: 1.2rem;
    }
    .cat2-hero-lead {
        font-size: 1.06rem;
        color: rgba(241, 245, 249, 0.9);
        line-height: 1.8;
        margin-bottom: 2rem;
    }
    .video-showcase-frame {
        position: relative;
        border-radius: var(--radius-lg);
        overflow: hidden;
        border: 2px solid rgba(255, 255, 255, 0.22);
        box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.45);
        background: var(--slate-900);
    }
    .video-showcase-frame img {
        width: 100%;
        height: 360px;
        object-fit: cover;
        opacity: 0.85;
        transition: transform 0.5s ease;
    }
    .video-showcase-frame:hover img {
        transform: scale(1.03);
    }
    .video-play-trigger {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 76px;
        height: 76px;
        border-radius: 50%;
        background: rgba(30, 64, 175, 0.92);
        color: #ffffff;
        border: 3px solid rgba(255, 255, 255, 0.85);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 2rem;
        cursor: pointer;
        box-shadow: 0 0 0 12px rgba(255, 255, 255, 0.15);
        transition: all 0.3s ease;
    }
    .video-play-trigger:hover {
        transform: translate(-50%, -50%) scale(1.08);
        background: var(--accent-color);
    }
    .video-caption-bar {
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        padding: 1rem 1.25rem;
        background: linear-gradient(0deg, rgba(15, 23, 42, 0.95) 0%, transparent 100%);
        display: flex;
        align-items: center;
        justify-content: space-between;
        color: #f8fafc;
        font-size: 0.88rem;
    }

    /* 快速锚点 TOC 导航条 */
    .toc-quick-bar {
        background: #ffffff;
        border-bottom: 1px solid var(--border-color);
        padding: 0.95rem 0;
        box-shadow: 0 4px 12px rgba(15, 23, 42, 0.02);
    }
    .toc-pill-link {
        display: inline-flex;
        align-items: center;
        gap: 0.4rem;
        padding: 0.45rem 1rem;
        border-radius: var(--radius-pill);
        font-size: 0.88rem;
        font-weight: 600;
        color: var(--slate-600);
        background: var(--slate-50);
        border: 1px solid var(--border-color);
        transition: all 0.2s ease;
    }
    .toc-pill-link:hover {
        color: var(--primary-color);
        background: var(--primary-soft);
        border-color: #bfdbfe;
    }

    /* 微博动态流卡片 */
    .weibo-feed-card {
        background: #ffffff;
        border: 1px solid var(--border-color);
        border-radius: var(--radius-lg);
        padding: 1.75rem;
        box-shadow: var(--card-shadow);
        margin-bottom: 1.5rem;
        transition: all 0.25s ease;
    }
    .weibo-feed-card:hover {
        border-color: #93c5fd;
        box-shadow: var(--card-shadow-hover);
    }
    .studio-avatar {
        width: 50px;
        height: 50px;
        border-radius: 50%;
        object-fit: cover;
        border: 2px solid var(--primary-soft);
    }
    .verified-badge {
        display: inline-flex;
        align-items: center;
        gap: 0.25rem;
        font-size: 0.76rem;
        font-weight: 600;
        background: #fef3c7;
        color: #b45309;
        padding: 0.15rem 0.6rem;
        border-radius: var(--radius-pill);
    }
    .feed-gallery-img {
        width: 100%;
        height: 190px;
        object-fit: cover;
        border-radius: var(--radius-sm);
        border: 1px solid var(--border-color);
    }
    .feed-meta-tag {
        font-size: 0.82rem;
        padding: 0.25rem 0.75rem;
        background: var(--slate-100);
        color: var(--slate-700);
        border-radius: var(--radius-pill);
        font-weight: 500;
    }

    /* 步骤时间轴 */
    .step-timeline-box {
        position: relative;
        padding-left: 2.2rem;
        border-left: 2px dashed #cbd5e1;
        margin-bottom: 2rem;
    }
    .step-timeline-box:last-child {
        margin-bottom: 0;
    }
    .step-dot {
        position: absolute;
        left: -13px;
        top: 0;
        width: 24px;
        height: 24px;
        border-radius: 50%;
        background: var(--primary-color);
        color: #ffffff;
        font-size: 0.78rem;
        font-weight: 700;
        display: flex;
        align-items: center;
        justify-content: center;
        box-shadow: 0 0 0 4px var(--primary-soft);
    }

    /* 数据指标盒 */
    .metric-stat-card {
        background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        padding: 1.6rem;
        text-align: center;
        box-shadow: var(--card-shadow);
    }
    .metric-number {
        font-size: 2.25rem;
        font-weight: 800;
        color: var(--primary-color);
        line-height: 1.1;
        margin-bottom: 0.4rem;
    }

    /* 表格对比样式 */
    .table-custom-wrapper {
        background: #ffffff;
        border-radius: var(--radius-lg);
        border: 1px solid var(--border-color);
        box-shadow: var(--card-shadow);
        overflow: hidden;
    }
    .table-custom th {
        background-color: var(--slate-900);
        color: #ffffff;
        font-weight: 600;
        padding: 1rem 1.25rem;
        border: none;
    }
    .table-custom td {
        padding: 1rem 1.25rem;
        vertical-align: middle;
        border-bottom: 1px solid var(--border-color);
        color: var(--slate-700);
    }

    /* 手风琴 FAQ */
    .accordion-custom .accordion-item {
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md) !important;
        margin-bottom: 1rem;
        overflow: hidden;
        box-shadow: 0 4px 12px rgba(15, 23, 42, 0.02);
    }
    .accordion-custom .accordion-button {
        font-weight: 600;
        color: var(--slate-900);
        padding: 1.2rem 1.5rem;
        background: #ffffff;
    }
    .accordion-custom .accordion-button:not(.collapsed) {
        color: var(--primary-color);
        background-color: var(--primary-soft);
        box-shadow: none;
    }

    /* 页脚样式（与首页一致） */
    .footer-section {
        background-color: var(--slate-900);
        color: #cbd5e1;
        padding: 4.5rem 0 2rem;
    }
    .footer-title {
        font-weight: 700;
        font-size: 1.05rem;
        color: #ffffff;
        margin-bottom: 1.25rem;
    }
    .footer-links {
        list-style: none;
        padding: 0;
        margin: 0;
    }
    .footer-links li {
        margin-bottom: 0.65rem;
    }
    .footer-links a {
        color: #94a3b8;
        font-size: 0.92rem;
        transition: color 0.2s ease;
    }
    .footer-links a:hover {
        color: #ffffff;
    }
    .text-slate-500 {
        color: #94a3b8;
    }
    .text-slate-400 {
        color: #64748b;
    }

    /* 响应式断点适配 */
    @media (max-width: 991.98px) {
        .cat2-hero-h1 {
            font-size: 2.1rem;
        }
        section {
            padding: 3.8rem 0;
        }
        .video-showcase-frame img {
            height: 290px;
        }
    }
    @media (max-width: 767.98px) {
        .cat2-video-hero {
            padding-top: 7rem;
            padding-bottom: 3.5rem;
        }
        .cat2-hero-h1 {
            font-size: 1.75rem;
        }
        .section-title {
            font-size: 1.65rem;
        }
        .feed-gallery-img {
            height: 150px;
        }
    }