/* roulang page: index */
:root {
      --primary-blue: #1E40AF;
      --accent-blue: #3B82F6;
      --indigo-accent: #6366F1;
      --slate-bg: #F8FAFC;
      --dark-surface: #0F172A;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --card-border: #E2E8F0;
    }
    html {
      scroll-behavior: smooth;
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
    }
    body {
      background-color: var(--slate-bg);
      color: var(--text-body);
      line-height: 1.6;
    }
    .custom-shadow {
      box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05), 0 2px 6px -1px rgba(15, 23, 42, 0.03);
    }
    .hover-lift {
      transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .hover-lift:hover {
      transform: translateY(-4px);
      box-shadow: 0 16px 28px -4px rgba(15, 23, 42, 0.1), 0 8px 12px -2px rgba(15, 23, 42, 0.05);
    }
    .bg-hero-pattern {
      background-image: linear-gradient(135deg, rgba(248, 250, 252, 0.94) 0%, rgba(239, 246, 255, 0.96) 100%), url('/assets/images/b5772dfb09dd060d.webp');
      background-size: cover;
      background-position: center;
    }