/* roulang page: index */
:root {
      --color-primary: #0F172A;
      --color-secondary: #0284C7;
      --color-accent: #06B6D4;
      --color-bg-light: #F8FAFC;
      --color-border: #E2E8F0;
      --radius-sm: 6px;
      --radius-md: 10px;
      --transition-smooth: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
      text-rendering: optimizeLegibility;
      -webkit-font-smoothing: antialiased;
    }
    .custom-scroll::-webkit-scrollbar {
      width: 6px;
      height: 6px;
    }
    .custom-scroll::-webkit-scrollbar-thumb {
      background: #CBD5E1;
      border-radius: 4px;
    }
    .bento-card {
      transition: var(--transition-smooth);
    }
    .bento-card:hover {
      transform: translateY(-3px);
      box-shadow: 0 12px 24px -10px rgba(15, 23, 42, 0.08);
    }
    .metric-number {
      font-variant-numeric: tabular-nums;
      letter-spacing: -0.02em;
    }