/* roulang page: index */
:root {
      --bg-page: #F8FAFC;
      --text-main: #0F172A;
      --text-muted: #475569;
      --color-brand: #2563EB;
      --color-mint: #10B981;
      --border-color: #E2E8F0;
    }
    body {
      background-color: var(--bg-page);
      color: var(--text-main);
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      text-rendering: optimizeLegibility;
      -webkit-font-smoothing: antialiased;
    }
    .grid-bg {
      background-size: 32px 32px;
      background-image: 
        linear-gradient(to right, rgba(226, 232, 240, 0.45) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(226, 232, 240, 0.45) 1px, transparent 1px);
    }
    .dark-grid-bg {
      background-size: 32px 32px;
      background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    }