/* roulang page: index */
:root {
      --primary: #0A192F;
      --accent-cyan: #00E5FF;
      --accent-orange: #FF6B4A;
      --text-main: #0F172A;
      --text-sub: #475569;
      --bg-light: #F8FAFC;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: #FFFFFF;
      overflow-x: hidden;
    }
    .code-editor-font {
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    }
    .hero-glow {
      background: radial-gradient(circle at 50% 30%, rgba(0, 229, 255, 0.15) 0%, rgba(10, 25, 47, 0) 70%);
    }
    .card-hover {
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .card-hover:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 30px -10px rgba(0, 229, 255, 0.15);
    }