/* roulang page: index */
:root {
      --primary: #0A4D68;
      --accent: #088395;
      --highlight: #05BFDB;
      --dark-navy: #051923;
      --bg-gray: #F8FAFC;
    }
    
    html {
      scroll-behavior: smooth;
    }

    body {
      color: #334155;
      background-color: var(--bg-gray);
      font-family: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    }

    /* 现代玻璃拟态与微边框 */
    .glass-nav {
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    }

    .feature-card {
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      border: 1px solid #E2E8F0;
    }
    .feature-card:hover {
      transform: translateY(-4px);
      border-color: #088395;
      box-shadow: 0 16px 30px -10px rgba(10, 77, 104, 0.12);
    }

    .badge-glow {
      box-shadow: 0 0 15px rgba(5, 191, 219, 0.35);
    }

    /* 进度条动效 */
    .progress-pulse {
      animation: pulse-glow 2s infinite ease-in-out;
    }
    @keyframes pulse-glow {
      0%, 100% { opacity: 0.8; }
      50% { opacity: 1; filter: drop-shadow(0 0 6px #05BFDB); }
    }