/* 专属样式：缩小小三角尺寸，保持与整体风格精致统一 */
  .sx-desc details summary::-webkit-details-marker { 
    font-size: 11px; 
    transform: scale(0.85);
  }
  .sx-desc details summary { 
    list-style-type: disclosure-closed; 
    font-size: 13px; /* 提示字号微调，更显精细 */
  }
  .sx-desc details[open] summary { 
    list-style-type: disclosure-open; 
  }