/* roulang page: index */
:root {
      --primary: #1e40af;
      --secondary: #0284c7;
      --bg-light: #f8fafc;
      --text-main: #0f172a;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      color: var(--text-main);
      background-color: var(--bg-light);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    .custom-shadow {
      box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    }
    .custom-shadow-hover:hover {
      box-shadow: 0 12px 20px -3px rgba(0, 0, 0, 0.08);
      transform: translateY(-4px);
    }
    .hero-pattern {
      background-image: radial-gradient(rgba(37, 99, 235, 0.08) 1px, transparent 1px);
      background-size: 24px 24px;
    }