/* roulang page: index */
:root {
      --primary: #0F766E;
      --primary-hover: #115E59;
      --accent-mint: #10B981;
      --accent-amber: #D97706;
      --bg-dark: #0A2528;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: #F8FAFC;
    }
    .custom-shadow {
      box-shadow: 0 4px 20px -2px rgba(15, 118, 110, 0.08), 0 2px 6px -1px rgba(0, 0, 0, 0.04);
    }
    .hero-bg-overlay {
      background: linear-gradient(135deg, rgba(4, 30, 35, 0.94) 0%, rgba(10, 37, 40, 0.88) 100%);
    }