/* 夜间模式下背景宇宙星光 */
#universe {
  display: block;
  position: fixed;
  margin: 0;
  padding: 0;
  border: 0;
  outline: 0;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}
/* 亮色模式下隐藏 */
[data-theme='light'] #universe {
  display: none;
}