/* roulang page: index */
:root {
      --bg-dark: #0A1118;
      --color-emerald: #10B981;
      --color-amber: #F59E0B;
      --text-main: #0F172A;
      --text-muted: #475569;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      color: #0F172A;
      background-color: #FFFFFF;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    .hero-glow {
      background: radial-gradient(circle at 50% 30%, rgba(16, 185, 129, 0.15), transparent 70%);
    }
    .code-editor {
      background: #0D1520;
      border: 1px solid #1E293B;
      box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.5);
    }
    details summary::-webkit-details-marker {
      display: none;
    }
    .pulse-dot {
      box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
      animation: pulse-ring 2s infinite;
    }
    @keyframes pulse-ring {
      0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
      70% { box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
      100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
    }