/* roulang page: index */
:root {
      --brand-dark: #0f172a;
      --brand-slate: #1e293b;
      --brand-primary: #0284c7;
      --brand-teal: #0d9488;
      --brand-accent: #f59e0b;
      --bg-soft: #f8fafc;
      --text-main: #0f172a;
      --text-muted: #475569;
      --border-color: #e2e8f0;
    }
    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: var(--bg-soft);
      line-height: 1.75;
    }
    .hero-gradient {
      background: radial-gradient(circle at 50% 20%, rgba(2, 132, 199, 0.12) 0%, rgba(13, 148, 136, 0.05) 50%, rgba(248, 250, 252, 1) 100%);
    }
    .card-hover {
      transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    }
    .card-hover:hover {
      transform: translateY(-3px);
      box-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
      border-color: #cbd5e1;
    }
    .progress-bar-glow {
      box-shadow: 0 0 12px rgba(2, 132, 199, 0.5);
    }

/* roulang page: article */
:root {
      --brand-dark: #0f172a;
      --brand-slate: #1e293b;
      --brand-primary: #0284c7;
      --brand-teal: #0d9488;
      --brand-accent: #f59e0b;
      --bg-soft: #f8fafc;
      --text-main: #0f172a;
      --text-muted: #475569;
      --border-color: #e2e8f0;
    }
    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: var(--bg-soft);
      line-height: 1.75;
    }
    .hero-gradient {
      background: radial-gradient(circle at 50% 20%, rgba(2, 132, 199, 0.12) 0%, rgba(13, 148, 136, 0.05) 50%, rgba(248, 250, 252, 1) 100%);
    }
    .card-hover {
      transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    }
    .card-hover:hover {
      transform: translateY(-3px);
      box-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
      border-color: #cbd5e1;
    }
    .article-content {
      font-size: 1.0625rem;
      line-height: 1.85;
      color: #334155;
    }
    .article-content h2 {
      font-size: 1.625rem;
      font-weight: 700;
      color: #0f172a;
      margin-top: 2.5rem;
      margin-bottom: 1.25rem;
      padding-bottom: 0.5rem;
      border-bottom: 2px solid #f1f5f9;
      position: relative;
    }
    .article-content h2::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: -2px;
      width: 48px;
      height: 2px;
      background-color: var(--brand-primary);
    }
    .article-content h3 {
      font-size: 1.3rem;
      font-weight: 600;
      color: #1e293b;
      margin-top: 2rem;
      margin-bottom: 0.875rem;
    }
    .article-content p {
      margin-bottom: 1.35rem;
    }
    .article-content ul, .article-content ol {
      margin-bottom: 1.5rem;
      padding-left: 1.5rem;
    }
    .article-content ul {
      list-style-type: disc;
    }
    .article-content ol {
      list-style-type: decimal;
    }
    .article-content li {
      margin-bottom: 0.5rem;
    }
    .article-content blockquote {
      margin: 1.75rem 0;
      padding: 1.25rem 1.5rem;
      border-left: 4px solid var(--brand-primary);
      background-color: #f0f9ff;
      border-radius: 0 0.75rem 0.75rem 0;
      color: #0369a1;
      font-style: normal;
    }
    .article-content img {
      max-width: 100%;
      height: auto;
      border-radius: 0.75rem;
      margin: 2rem auto;
      box-shadow: 0 4px 12px rgba(15, 23, 42, 0.06);
    }

/* roulang page: category1 */
:root {
      --brand-dark: #0f172a;
      --brand-slate: #1e293b;
      --brand-primary: #0284c7;
      --brand-teal: #0d9488;
      --brand-accent: #f59e0b;
      --bg-soft: #f8fafc;
      --text-main: #0f172a;
      --text-muted: #475569;
      --border-color: #e2e8f0;
    }
    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: var(--bg-soft);
      line-height: 1.75;
    }
    .hero-gradient {
      background: radial-gradient(circle at 50% 20%, rgba(2, 132, 199, 0.12) 0%, rgba(13, 148, 136, 0.05) 50%, rgba(248, 250, 252, 1) 100%);
    }
    .card-hover {
      transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    }
    .card-hover:hover {
      transform: translateY(-3px);
      box-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
      border-color: #cbd5e1;
    }