/* roulang page: index */
:root {
      --bg-dark: #0F1115;
      --bg-metal: #1A1D24;
      --bg-light: #F4F6F8;
      --primary-orange: #FF6B00;
      --primary-yellow: #FFB703;
      --border-zinc: #27272a;
      --text-muted: #9ca3af;
      --accent-green: #10B981;
    }
    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }
    .custom-scroll::-webkit-scrollbar {
      height: 6px;
      width: 6px;
    }
    .custom-scroll::-webkit-scrollbar-thumb {
      background: #3f3f46;
      border-radius: 4px;
    }
    .hero-bg {
      background: linear-gradient(135deg, rgba(15, 17, 21, 0.94) 0%, rgba(26, 29, 36, 0.88) 100%), url('/assets/images/bd4f175d364baed2.webp') center/cover no-repeat;
    }
    .metal-card {
      background: #161920;
      border: 1px solid #27272a;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .metal-card:hover {
      border-color: #FF6B00;
      transform: translateY(-3px);
      box-shadow: 0 12px 24px -10px rgba(255, 107, 0, 0.15);
    }
    .stripe-pattern {
      background: repeating-linear-gradient(45deg, #1f242e, #1f242e 10px, #161920 10px, #161920 20px);
    }