/* roulang page: index */
:root {
      --primary: #1e40af;
      --primary-light: #2563eb;
      --accent: #d97706;
      --slate-dark: #0f172a;
      --slate-muted: #64748b;
      --bg-light: #f8fafc;
      --border-color: #e2e8f0;
    }
    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    body {
      background-color: #ffffff;
      color: #1e293b;
      overflow-x: hidden;
    }
    .custom-shadow {
      box-shadow: 0 10px 30px -5px rgba(15, 23, 42, 0.06), 0 4px 6px -2px rgba(15, 23, 42, 0.03);
    }
    .hover-lift {
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .hover-lift:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 25px -5px rgba(30, 64, 175, 0.1), 0 10px 10px -5px rgba(30, 64, 175, 0.04);
    }
    .bg-grid {
      background-image: radial-gradient(rgba(37, 99, 235, 0.08) 1px, transparent 1px);
      background-size: 24px 24px;
    }