/* roulang page: index */
:root {
      --primary: #6366F1;
      --cyan: #06B6D4;
      --bg-dark: #0F172A;
      --bg-card: #1E293B;
      --text-main: #0F172A;
      --text-light: #F8FAFC;
      --text-muted: #94A3B8;
      --border-dark: #334155;
    }
    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    }
    .hero-glow {
      background: radial-gradient(circle at 50% 30%, rgba(99, 102, 241, 0.28) 0%, rgba(6, 182, 212, 0.12) 40%, rgba(15, 23, 42, 0) 75%);
    }
    .glow-border {
      border: 1px solid rgba(255, 255, 255, 0.1);
      box-shadow: 0 10px 25px -5px rgba(99, 102, 241, 0.12);
    }
    .glow-border:hover {
      border-color: rgba(6, 182, 212, 0.4);
      box-shadow: 0 14px 30px -5px rgba(6, 182, 212, 0.22);
    }
    .hero-gradient-text {
      background: linear-gradient(135deg, #FFFFFF 20%, #A5B4FC 60%, #38BDF8 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }