/* roulang page: index */
:root {
      --primary: #00E599;
      --primary-hover: #00B87A;
      --dark-base: #0B0F17;
      --dark-card: #131B26;
      --text-main: #0F172A;
      --text-muted: #64748B;
      --accent-orange: #FF6B00;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: #F8FAFC;
      overflow-x: hidden;
    }
    .custom-scrollbar::-webkit-scrollbar {
      height: 6px;
      width: 6px;
    }
    .custom-scrollbar::-webkit-scrollbar-thumb {
      background: #CBD5E1;
      border-radius: 4px;
    }
    .hero-bg-overlay {
      background: linear-gradient(135deg, rgba(11, 15, 23, 0.94) 0%, rgba(19, 27, 38, 0.88) 100%);
    }
    .interactive-card {
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .interactive-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 16px 32px rgba(0, 229, 153, 0.12);
      border-color: #00E599;
    }