/* roulang page: index */
:root {
      --bg-dark: #0B0F17;
      --bg-surface: #131A26;
      --primary: #00E599;
      --accent: #0066FF;
      --text-main: #F1F5F9;
      --text-muted: #94A3B8;
      --border: #1E293B;
    }
    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .font-num {
      font-family: "DIN Alternate", Inter, -apple-system, sans-serif;
    }
    .glow-box:hover {
      box-shadow: 0 12px 28px -8px rgba(0, 229, 153, 0.22);
      border-color: rgba(0, 229, 153, 0.45);
    }
    .accordion-content {
      max-height: 0;
      transition: max-height 0.3s ease-out;
      overflow: hidden;
    }
    .accordion-item.active .accordion-content {
      max-height: 280px;
    }
    .accordion-item.active .accordion-arrow {
      transform: rotate(180deg);
      color: var(--primary);
    }
    .accordion-item.active {
      border-color: rgba(0, 229, 153, 0.4);
    }