/* roulang page: index */
:root {
      --primary: #4F46E5;
      --accent-cyan: #06B6D4;
      --accent-pink: #EC4899;
      --dark-bg: #0F172A;
      --text-main: #0F172A;
      --text-muted: #475569;
    }
    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: #FAFAFA;
      overflow-x: hidden;
    }
    .hero-glow {
      background: radial-gradient(circle at 50% 20%, rgba(79, 70, 229, 0.15) 0%, rgba(6, 182, 212, 0.05) 50%, rgba(255, 255, 255, 0) 80%);
    }
    .custom-card {
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .custom-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
    }
    .accordion-content {
      transition: max-height 0.3s ease-in-out, opacity 0.3s ease-in-out;
    }