/* One hardware-decoded video preserves the 18-tile wall without 18 GIF decoders. */
.trial-grid.has-wall-video {
  isolation: isolate;
}
.trial-grid .trial-wall-video {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: fill;
  pointer-events: none;
}
.trial-grid .trial-wall-video[hidden] {
  display: none;
}
.trial-grid.has-wall-video figure {
  z-index: 1;
  background: transparent;
}
.trial-grid.has-wall-video.wall-ready figure > img {
  visibility: hidden;
}