/* roulang page: index */
:root {
      --primary-dark: #0F2027;
      --primary-navy: #203A43;
      --accent-teal: #00C9A7;
      --accent-cyan: #00B4D8;
      --surface-light: #F8FAFC;
      --surface-card: #FFFFFF;
      --border-light: #E2E8F0;
      --text-main: #1E293B;
      --text-muted: #64748B;
    }
    html {
      scroll-behavior: smooth;
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    }
    body {
      color: var(--text-main);
      background-color: #F8FAFC;
    }
    .custom-shadow {
      box-shadow: 0 4px 20px -2px rgba(15, 32, 39, 0.06), 0 2px 6px -1px rgba(15, 32, 39, 0.04);
    }
    .custom-shadow-lg {
      box-shadow: 0 10px 25px -5px rgba(15, 32, 39, 0.1), 0 8px 10px -6px rgba(15, 32, 39, 0.05);
    }
    .hero-banner {
      background: linear-gradient(135deg, rgba(15,32,39,0.92) 0%, rgba(32,58,67,0.85) 100%), url('/assets/images/8a3c754ccc6e7afe.webp') center/cover no-repeat;
    }
    .dark-panel {
      background: linear-gradient(180deg, #0A1118 0%, #0F2027 100%);
    }
    .glass-nav {
      backdrop-filter: blur(12px);
      background-color: rgba(255, 255, 255, 0.95);
    }