/* roulang page: index */
:root {
      --primary-navy: #0F172A;
      --accent-orange: #F97316;
      --accent-green: #10B981;
      --bg-light: #F8FAFC;
      --border-color: #E2E8F0;
    }
    body {
      color: #334155;
      background-color: #FFFFFF;
      overflow-x: hidden;
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    .custom-scroll::-webkit-scrollbar {
      height: 6px;
    }
    .custom-scroll::-webkit-scrollbar-thumb {
      background-color: #CBD5E1;
      border-radius: 4px;
    }
    .hero-slide {
      display: none;
      transition: opacity 0.6s ease-in-out;
    }
    .hero-slide.active {
      display: block;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease-out;
    }
    .faq-answer.open {
      max-height: 320px;
    }
    .code-editor {
      background: #090D16;
      border: 1px solid #1E293B;
      box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.5);
    }