/* roulang page: index */
:root {
      --primary: #059669;
      --primary-dark: #064e3b;
      --accent: #f59e0b;
      --bg-light: #f8fafc;
      --text-main: #0f172a;
      --text-muted: #475569;
      --border-color: #e2e8f0;
    }
    html {
      scroll-behavior: smooth;
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Heiti SC", sans-serif;
    }
    .hero-gradient {
      background: linear-gradient(135deg, rgba(6, 78, 59, 0.95) 0%, rgba(15, 23, 42, 0.92) 100%), url('/assets/images/c715668abc4d5176.png') center/cover no-repeat;
    }
    .custom-scroll::-webkit-scrollbar {
      height: 6px;
    }
    .custom-scroll::-webkit-scrollbar-thumb {
      background: #cbd5e1;
      border-radius: 4px;
    }
    .accordion-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
    }
    .accordion-open .accordion-content {
      max-height: 250px;
    }
    .accordion-open .accordion-icon {
      transform: rotate(180deg);
    }