/* roulang page: index */
:root {
      --brand-blue: #1e40af;
      --brand-hover: #1d4ed8;
      --brand-light: #eff6ff;
      --brand-dark: #0f172a;
      --border-color: #e2e8f0;
    }
    body {
      color: #1e293b;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: #f8fafc;
      -webkit-font-smoothing: antialiased;
    }
    .spec-bar-fill {
      transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .card-hover-effect {
      transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    }
    .card-hover-effect:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 25px -5px rgba(30, 64, 175, 0.08), 0 8px 10px -6px rgba(30, 64, 175, 0.05);
      border-color: #bfdbfe;
    }

/* roulang page: article */
:root {
      --brand-blue: #1e40af;
      --brand-hover: #1d4ed8;
      --brand-light: #eff6ff;
      --brand-dark: #0f172a;
      --border-color: #e2e8f0;
    }
    body {
      color: #1e293b;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: #f8fafc;
      -webkit-font-smoothing: antialiased;
    }
    .card-hover-effect {
      transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    }
    .card-hover-effect:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 25px -5px rgba(30, 64, 175, 0.08), 0 8px 10px -6px rgba(30, 64, 175, 0.05);
      border-color: #bfdbfe;
    }
    .prose h2 {
      font-size: 1.5rem;
      font-weight: 800;
      color: #0f172a;
      margin-top: 2rem;
      margin-bottom: 1rem;
      padding-bottom: 0.5rem;
      border-bottom: 1px solid #e2e8f0;
    }
    .prose h3 {
      font-size: 1.25rem;
      font-weight: 700;
      color: #1e293b;
      margin-top: 1.5rem;
      margin-bottom: 0.75rem;
    }
    .prose p {
      line-height: 1.85;
      margin-bottom: 1.25rem;
      color: #334155;
      text-align: justify;
    }
    .prose blockquote {
      border-left: 4px solid #2563eb;
      background-color: #eff6ff;
      padding: 1rem 1.25rem;
      border-radius: 0 0.5rem 0.5rem 0;
      color: #1e40af;
      margin: 1.5rem 0;
      font-style: normal;
    }
    .prose ul, .prose ol {
      margin-top: 1rem;
      margin-bottom: 1.25rem;
      padding-left: 1.5rem;
    }
    .prose li {
      margin-bottom: 0.5rem;
      line-height: 1.7;
    }
    .prose img {
      border-radius: 0.5rem;
      box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
      margin: 1.5rem auto;
      max-width: 100%;
    }
    .prose table {
      width: 100%;
      border-collapse: collapse;
      margin: 1.5rem 0;
      font-size: 0.875rem;
    }
    .prose th {
      background-color: #f1f5f9;
      color: #0f172a;
      padding: 0.75rem 1rem;
      border: 1px solid #e2e8f0;
      text-align: left;
      font-weight: 700;
    }
    .prose td {
      padding: 0.75rem 1rem;
      border: 1px solid #e2e8f0;
      color: #475569;
    }
    .pull-quote {
      position: relative;
      padding: 2.5rem 2rem;
      background: linear-gradient(135deg, #eff6ff 0%, #ffffff 100%);
      border: 1px solid #bfdbfe;
      border-radius: 0.75rem;
      margin: 2.5rem 0;
    }
    .pull-quote::before {
      content: "“";
      position: absolute;
      top: 0.5rem;
      left: 1rem;
      font-size: 4rem;
      line-height: 1;
      color: #93c5fd;
      font-family: Georgia, serif;
    }

/* roulang page: category1 */
:root {
      --brand-blue: #1e40af;
      --brand-hover: #1d4ed8;
      --brand-light: #eff6ff;
      --brand-dark: #0f172a;
      --border-color: #e2e8f0;
    }
    body {
      color: #1e293b;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: #f8fafc;
      -webkit-font-smoothing: antialiased;
    }
    .card-hover-effect {
      transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    }
    .card-hover-effect:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 25px -5px rgba(30, 64, 175, 0.08), 0 8px 10px -6px rgba(30, 64, 175, 0.05);
      border-color: #bfdbfe;
    }
    .spec-progress-fill {
      transition: width 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    }

/* roulang page: category2 */
:root {
      --brand-blue: #1e40af;
      --brand-hover: #1d4ed8;
      --brand-light: #eff6ff;
      --brand-dark: #0f172a;
      --border-color: #e2e8f0;
    }
    body {
      color: #1e293b;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: #f8fafc;
      -webkit-font-smoothing: antialiased;
    }
    .card-hover-effect {
      transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    }
    .card-hover-effect:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 25px -5px rgba(30, 64, 175, 0.08), 0 8px 10px -6px rgba(30, 64, 175, 0.05);
      border-color: #bfdbfe;
    }
    .tab-btn.active {
      background-color: #1e40af;
      color: #ffffff;
      box-shadow: 0 4px 6px -1px rgba(30, 64, 175, 0.2);
    }