/* roulang page: index */
:root {
      --primary: #0284c7;
      --primary-dark: #075985;
      --accent: #f59e0b;
      --bg-slate: #f8fafc;
      --text-main: #0f172a;
      --text-muted: #475569;
      --border-color: #e2e8f0;
      --radius-box: 1.25rem;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: #ffffff;
      -webkit-font-smoothing: antialiased;
    }
    .hero-gradient {
      background: linear-gradient(135deg, #082f49 0%, #0c4a6e 60%, #0369a1 100%);
    }
    .card-hover {
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .card-hover:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 24px -8px rgba(2, 132, 199, 0.15);
    }

/* roulang page: category1 */
:root {
      --primary: #0284c7;
      --primary-dark: #075985;
      --accent: #f59e0b;
      --bg-slate: #f8fafc;
      --text-main: #0f172a;
      --text-muted: #475569;
      --border-color: #e2e8f0;
      --radius-box: 1.25rem;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: #ffffff;
      -webkit-font-smoothing: antialiased;
    }
    .hero-gradient {
      background: linear-gradient(135deg, #082f49 0%, #0c4a6e 60%, #0369a1 100%);
    }
    .card-hover {
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .card-hover:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 24px -8px rgba(2, 132, 199, 0.15);
    }
    .glow-soft {
      background: radial-gradient(circle at 50% 30%, rgba(14, 165, 233, 0.12) 0%, rgba(255, 255, 255, 0) 70%);
    }