/* roulang page: index */
:root {
            --bg-pitch-900: #0F141C;
            --bg-pitch-800: #171E28;
            --accent-grass: #00D06C;
            --accent-flame: #FF5722;
            --text-steel: #E5E9F0;
        }
        body {
            background-color: var(--bg-pitch-900);
            color: var(--text-steel);
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
            overflow-x: hidden;
            line-height: 1.75;
        }
        .text-glow {
            text-shadow: 0 0 20px rgba(0, 208, 108, 0.4);
        }
        .glow-card {
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .glow-card:hover {
            border-color: rgba(0, 208, 108, 0.5);
            transform: translateY(-4px);
            box-shadow: 0 12px 30px -10px rgba(0, 208, 108, 0.2);
        }
        details > summary::-webkit-details-marker {
            display: none;
        }

/* roulang page: category1 */
:root {
      --bg-pitch-900: #0F141C;
      --bg-pitch-800: #171E28;
      --accent-grass: #00D06C;
      --accent-flame: #FF5722;
      --text-steel: #E5E9F0;
    }
    body {
      background-color: var(--bg-pitch-900);
      color: var(--text-steel);
      font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
      overflow-x: hidden;
      line-height: 1.75;
    }
    .text-glow {
      text-shadow: 0 0 20px rgba(0, 208, 108, 0.4);
    }
    .glow-card {
      border: 1px solid rgba(255, 255, 255, 0.08);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .glow-card:hover {
      border-color: rgba(0, 208, 108, 0.5);
      transform: translateY(-4px);
      box-shadow: 0 12px 30px -10px rgba(0, 208, 108, 0.2);
    }
    .faq-panel {
      transition: max-height 0.3s ease-out, opacity 0.3s ease-out;
    }