/* roulang page: index */
:root {
      --primary: #E11D48;
      --secondary: #0F172A;
      --accent: #F59E0B;
      --bg-page: #F8FAFC;
    }
    body {
      color: #334155;
      background-color: var(--bg-page);
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
      text-rendering: optimizeLegibility;
      -webkit-font-smoothing: antialiased;
    }
    .track-grid-bg {
      background-image: radial-gradient(rgba(15, 23, 42, 0.06) 1px, transparent 1px);
      background-size: 24px 24px;
    }
    .dark-track-bg {
      background-image: radial-gradient(rgba(225, 29, 72, 0.15) 1px, transparent 1px);
      background-size: 24px 24px;
    }
    details summary::-webkit-details-marker {
      display: none;
    }