/* roulang page: index */
:root {
      --primary: #FF5500;
      --secondary: #00E599;
      --bg-light: #F8FAFC;
      --text-main: #1E293B;
      --text-muted: #475569;
      --border-color: #E2E8F0;
      --radius-card: 1rem;
      --radius-btn: 9999px;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: #FFFFFF;
      overflow-x: hidden;
      line-height: 1.75;
    }
    .code-console {
      background: #0B1120;
      border: 1px solid rgba(255, 255, 255, 0.1);
      box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.6);
    }
    .glass-nav {
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
    }
    .hero-glow {
      background: radial-gradient(circle at 50% 30%, rgba(255, 85, 0, 0.12) 0%, rgba(0, 229, 153, 0.05) 45%, transparent 70%);
    }
    .card-lift {
      transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .card-lift:hover {
      transform: translateY(-4px);
      box-shadow: 0 16px 30px -10px rgba(15, 23, 42, 0.12);
    }