/* roulang page: index */
:root {
      --primary: #059669;
      --primary-hover: #047857;
      --bg-light: #F8FAFC;
      --bg-dark: #0A0F1D;
      --text-main: #0F172A;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
    }
    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-light);
      color: var(--text-main);
      overflow-x: hidden;
    }
    .code-font {
      font-family: "JetBrains Mono", "SF Mono", Consolas, monospace;
    }
    .hero-pattern {
      background-image: radial-gradient(rgba(5, 150, 105, 0.08) 1px, transparent 1px);
      background-size: 24px 24px;
    }
    .card-hover {
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .card-hover:hover {
      transform: translateY(-3px);
      box-shadow: 0 12px 24px -10px rgba(5, 150, 105, 0.15);
    }