/* roulang page: index */
:root {
      --primary-color: #00E575;
      --secondary-color: #FF5500;
      --bg-dark: #0B0F17;
      --bg-light: #F8FAFC;
      --text-dark: #0F172A;
      --text-muted: #64748B;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-light);
      color: var(--text-dark);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    .custom-container {
      width: 100%;
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.25rem;
      padding-right: 1.25rem;
    }
    .btn-lift {
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .btn-lift:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 25px -5px rgba(0, 229, 117, 0.35);
    }
    .btn-orange-lift:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 25px -5px rgba(255, 85, 0, 0.35);
    }
    .glass-dark {
      background: rgba(11, 15, 23, 0.85);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease-out;
    }
    .faq-answer.open {
      max-height: 260px;
    }
    .tab-active {
      background-color: #00E575;
      color: #0B0F17;
      font-weight: 700;
    }