/* roulang page: index */
:root {
      --primary: #0D5C75;
      --primary-hover: #083C4D;
      --secondary: #10B981;
      --accent: #D97706;
      --bg-light: #F8FAFC;
      --bg-panel: #F0F4F8;
      --text-main: #0F172A;
      --text-muted: #334155;
      --text-light: #64748B;
      --border-color: #E2E8F0;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Noto Sans", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: var(--bg-light);
      -webkit-font-smoothing: antialiased;
    }
    .hero-bg-overlay {
      background: linear-gradient(135deg, rgba(10, 37, 51, 0.94) 0%, rgba(13, 92, 117, 0.88) 100%);
    }
    .card-hover-effect {
      transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .card-hover-effect:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 28px -6px rgba(13, 92, 117, 0.12), 0 8px 12px -4px rgba(13, 92, 117, 0.06);
    }