/* roulang page: index */
:root {
      --bg-main: #F8FAFC;
      --bg-surface: #FFFFFF;
      --bg-dark: #0B0F19;
      --text-primary: #0F172A;
      --text-secondary: #475569;
      --brand-primary: #0284C7;
      --brand-accent: #0D9488;
      --border-subtle: #E2E8F0;
      --border-dark: #1E293B;
    }
    body {
      background-color: var(--bg-main);
      color: var(--text-primary);
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
      text-rendering: optimizeLegibility;
      -webkit-font-smoothing: antialiased;
    }
    .mono-num {
      font-family: "JetBrains Mono", "DIN Alternate", "Roboto Mono", monospace;
    }
    .custom-scroll::-webkit-scrollbar {
      height: 6px;
    }
    .custom-scroll::-webkit-scrollbar-thumb {
      background-color: #CBD5E1;
      border-radius: 4px;
    }
    .chip-glow {
      box-shadow: 0 0 25px rgba(2, 132, 197, 0.18);
    }
    .chip-glow-hover:hover {
      box-shadow: 0 10px 25px -5px rgba(2, 132, 197, 0.25);
    }