/* roulang page: index */
:root {
      --primary: #0F2C59;
      --accent: #0066FF;
      --accent-alt: #00D084;
      --dark: #0B132B;
      --text: #1E293B;
      --muted: #64748B;
      --bg-light: #F8FAFC;
    }
    body {
      color: var(--text);
      background-color: var(--bg-light);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      text-rendering: optimizeLegibility;
      -webkit-font-smoothing: antialiased;
    }
    .custom-shadow {
      box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    }
    .custom-shadow-hover {
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .custom-shadow-hover:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 24px -6px rgba(15, 44, 89, 0.12), 0 4px 10px -2px rgba(15, 44, 89, 0.06);
    }
    details summary::-webkit-details-marker {
      display: none;
    }