/* roulang page: index */
:root {
      --color-primary: #1d4ed8;
      --color-secondary: #0d9488;
      --bg-light: #f8fafc;
      --text-main: #0f172a;
      --text-body: #334155;
      --text-muted: #64748b;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-body);
      background-color: var(--bg-light);
      line-height: 1.78;
    }
    .custom-container {
      width: 100%;
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.25rem;
      padding-right: 1.25rem;
    }
    .hero-glow {
      background: radial-gradient(circle at 50% 30%, rgba(37, 99, 235, 0.25) 0%, rgba(15, 23, 42, 0.95) 70%);
    }