/* roulang page: index */
:root {
      --primary-color: #4338CA;
      --dark-color: #111827;
      --accent-color: #F59E0B;
      --emerald-color: #10B981;
      --bg-surface: #F9FAFB;
      --card-border: #E5E7EB;
      --font-stack: system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    }
    * {
      box-sizing: border-box;
      scroll-behavior: smooth;
    }
    body {
      font-family: var(--font-stack);
      line-height: 1.7;
      color: #374151;
      background-color: #FDFDFE;
      -webkit-font-smoothing: antialiased;
    }
    .custom-container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.25rem;
      padding-right: 1.25rem;
    }
    .hero-bg {
      background-image: linear-gradient(135deg, rgba(15, 23, 42, 0.94), rgba(67, 56, 202, 0.88)), url('/assets/images/870a61806cf87f31.png');
      background-size: cover;
      background-position: center;
    }
    .card-hover {
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .card-hover:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 28px -4px rgba(17, 24, 39, 0.08);
      border-color: #C7D2FE;
    }
    .glass-dark {
      background: rgba(15, 23, 42, 0.75);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(255, 255, 255, 0.1);
    }