/* roulang page: index */
:root {
      --bg-main: #0B0E14;
      --color-mint: #00E599;
      --color-violet: #7C3AED;
      --text-main: #F1F5F9;
      --text-muted: #94A3B8;
      --card-border: rgba(255, 255, 255, 0.08);
      --card-bg: rgba(23, 32, 48, 0.75);
    }
    body {
      background-color: var(--bg-main);
      color: var(--text-main);
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .glass-card {
      background: var(--card-bg);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border: 1px solid var(--card-border);
      box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    }
    .glass-card:hover {
      border-color: rgba(0, 229, 153, 0.35);
      box-shadow: 0 12px 35px -8px rgba(0, 229, 153, 0.15);
    }
    .badge-mint {
      background: rgba(0, 229, 153, 0.12);
      border: 1px solid rgba(0, 229, 153, 0.3);
      color: #00E599;
    }
    .badge-violet {
      background: rgba(124, 58, 237, 0.15);
      border: 1px solid rgba(167, 139, 250, 0.3);
      color: #C4B5FD;
    }
    .btn-mint {
      background: #00E599;
      color: #0B0E14;
      font-weight: 600;
      transition: all 0.25s ease;
    }
    .btn-mint:hover {
      background: #00C782;
      box-shadow: 0 0 20px rgba(0, 229, 153, 0.4);
      transform: translateY(-1px);
    }
    .btn-outline {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.15);
      color: #F1F5F9;
      transition: all 0.25s ease;
    }
    .btn-outline:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: #00E599;
      color: #00E599;
    }
    .glow-bg {
      background: radial-gradient(circle at 50% 30%, rgba(0, 229, 153, 0.08) 0%, rgba(124, 58, 237, 0.05) 50%, transparent 75%);
    }
    /* 手风琴平滑展开 */
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
    }
    .faq-item.active .faq-answer {
      max-height: 300px;
      padding-top: 1rem;
    }
    .faq-item.active .faq-icon {
      transform: rotate(180deg);
      color: #00E599;
    }
    .faq-item.active {
      border-left: 3px solid #00E599;
    }