/* roulang page: index */
:root {
      --primary: #0F2C59;
      --accent-teal: #00B4D8;
      --accent-purple: #6366F1;
      --bg-dark: #0B132B;
      --text-main: #334155;
      --text-title: #0F172A;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: #ffffff;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }
    .text-title { color: var(--text-title); }
    .hero-glow {
      background: radial-gradient(circle at 50% 30%, rgba(0, 180, 216, 0.15) 0%, rgba(15, 44, 89, 0) 70%);
    }
    .dark-grid-bg {
      background-color: #0B132B;
      background-image: radial-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px);
      background-size: 24px 24px;
    }
    .glass-nav {
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
    }
    .custom-shadow {
      box-shadow: 0 10px 30px -5px rgba(15, 44, 89, 0.08), 0 4px 6px -2px rgba(15, 44, 89, 0.03);
    }
    .custom-shadow-hover:hover {
      box-shadow: 0 20px 35px -5px rgba(15, 44, 89, 0.14), 0 8px 10px -4px rgba(15, 44, 89, 0.06);
    }