/* roulang page: index */
:root {
      --primary: #059669;
      --primary-dark: #047857;
      --accent: #f97316;
      --slate-dark: #0f172a;
      --bg-light: #f8fafc;
    }
    html {
      scroll-behavior: smooth;
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
    }
    body {
      background-color: #ffffff;
      color: #334155;
      overflow-x: hidden;
    }
    .hero-banner-bg {
      background: linear-gradient(135deg, rgba(236, 253, 245, 0.95) 0%, rgba(248, 250, 252, 0.98) 100%), url('/assets/images/7828beecf37ac36d.jpg') center/cover no-repeat;
    }
    .dark-showcase-bg {
      background: radial-gradient(circle at top right, #1e293b, #0b132b);
    }
    .badge-tag {
      display: inline-flex;
      align-items: center;
      padding: 0.25rem 0.75rem;
      border-radius: 9999px;
      font-size: 0.8125rem;
      font-weight: 600;
      line-height: 1rem;
    }
    .card-elevated {
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .card-elevated:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
    }
    details > summary {
      list-style: none;
    }
    details > summary::-webkit-details-marker {
      display: none;
    }