/* roulang page: index */
:root {
      --primary-dark: #062E27;
      --primary: #134E4A;
      --primary-light: #0D9488;
      --accent-emerald: #10B981;
      --accent-gold: #F59E0B;
      --bg-surface: #F8FAFC;
      --bg-alt: #F1F5F9;
      --text-main: #0F172A;
      --text-muted: #475569;
    }
    html {
      scroll-behavior: smooth;
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
    }
    .hero-glow-overlay {
      background: linear-gradient(135deg, rgba(6, 46, 39, 0.92) 0%, rgba(19, 78, 74, 0.85) 50%, rgba(15, 23, 42, 0.94) 100%);
    }
    .card-hover-effect {
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .card-hover-effect:hover {
      transform: translateY(-4px);
      box-shadow: 0 16px 30px -8px rgba(19, 78, 74, 0.15);
    }
    .section-title-line::after {
      content: '';
      display: block;
      width: 48px;
      height: 4px;
      background: #10B981;
      margin-top: 12px;
      border-radius: 2px;
    }