.allWaitLoaded {
  visibility: hidden;
  opacity: 0;
  transition: opacity 0.2s ease;
  min-height: 200px; /* 預留空間避免 CLS */
}

footer[role="contentinfo"] {
  visibility: hidden;
  opacity: 0;
   transition: opacity 0.4s ease-in-out;
  min-height: 200px; /* 根據實際 footer 高度調整 */
}

#index_plus video.index_top_video_bk,
video.index_top_video_bk {
  visibility: hidden;
  opacity: 0;
  transition: opacity 0.3s ease;
  /* 預留空間避免 CLS，可自行視影片高度設定 */
  min-height: 200px;
}