/* roulang page: index */
:root {
      --primary-color: #0B192C;
      --accent-cyan: #00ADB5;
      --accent-amber: #FF9F29;
      --bg-light: #F5F7FA;
      --text-main: #121826;
      --text-muted: #4B5563;
      --border-color: #E2E8F0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      background-color: var(--bg-light);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      -webkit-font-smoothing: antialiased;
    }
    .hero-glow {
      background: radial-gradient(circle at 75% 30%, rgba(0, 173, 181, 0.15) 0%, rgba(11, 25, 44, 0.98) 70%), url('/assets/images/cd86e8131427d039.webp') center/cover no-repeat;
    }
    .code-console {
      background: #060b11;
      border: 1px solid #1f3045;
      box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.7);
    }
    .section-dark {
      background: radial-gradient(circle at 50% 0%, #152232 0%, #0a111a 100%);
    }
    details > summary::-webkit-details-marker {
      display: none;
    }