/* roulang page: index */
:root {
      --primary: #0D6E6E;
      --primary-dark: #0A5C5C;
      --secondary: #2A9D8F;
      --accent: #E76F51;
      --bg-base: #F8FAFA;
      --bg-card: #FFFFFF;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
    }
    body {
      background-color: var(--bg-base);
      color: var(--text-main);
      font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }
    .custom-shadow {
      box-shadow: 0 4px 20px -2px rgba(13, 110, 110, 0.06);
    }
    .custom-shadow-lg {
      box-shadow: 0 10px 30px -4px rgba(13, 110, 110, 0.12);
    }
    .card-hover {
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .card-hover:hover {
      transform: translateY(-4px);
      border-color: #2A9D8F;
      box-shadow: 0 12px 28px -4px rgba(13, 110, 110, 0.12);
    }
    .btn-brand {
      background-color: var(--primary);
      transition: all 0.25s ease;
    }
    .btn-brand:hover {
      background-color: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 4px 14px rgba(13, 110, 110, 0.28);
    }
    .btn-accent {
      background-color: var(--accent);
      transition: all 0.25s ease;
    }
    .btn-accent:hover {
      background-color: #D65A3C;
      transform: translateY(-2px);
      box-shadow: 0 4px 14px rgba(231, 111, 81, 0.32);
    }