/* roulang page: index */
:root {
      --primary: #1e40af;
      --primary-dark: #1e3a8a;
      --secondary: #0d9488;
      --text-main: #0f172a;
      --text-muted: #475569;
      --bg-light: #f8fafc;
      --border-color: #e2e8f0;
    }
    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    }
    .custom-shadow {
      box-shadow: 0 10px 30px -5px rgba(15, 23, 42, 0.06);
    }
    .hero-bg {
      background: linear-gradient(135deg, rgba(248, 250, 252, 0.95), rgba(239, 246, 255, 0.92)), url('/assets/images/e59e8c276a90abb1.webp') center/cover no-repeat;
    }
    .dark-topology-bg {
      background: linear-gradient(180deg, #0b1120 0%, #0f172a 100%);
    }