.yt-embed {
  position: relative;
  max-width: 100%;
  aspect-ratio: 16 / 9; /* CLS抑制 */
  background: #000;
  overflow: hidden;
}

.yt-embed iframe,
.yt-embed .yt-thumb {
  width: 100%;
  height: 100%;
  display: block;
}

.yt-embed .yt-thumb {
  position: relative;
  border: 0;
  padding: 0;
  cursor: pointer;
  background: #000;
}

.yt-embed .yt-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ▼▼ Playボタン中央配置 ▼▼ */
.yt-embed .yt-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  
  /* YouTube風デザイン */
  width: 68px;
  height: 48px;
  background: #f00;
  border-radius: 8px;
  display: flex;
  justify-content: center;
  align-items: center;

  /* triangle */
  color: #fff;
  font-size: 24px;
  line-height: 1;
  padding-left: 2px; /* 微妙に中央寄せ */
  
  box-shadow: 0 4px 8px rgba(0,0,0,.4);
  opacity: .92;
  user-select: none;
  pointer-events: none; /* クリック本体に通す */
}

/* hoverでほんのり映える */
.yt-embed:hover .yt-play {
  opacity: 1;
  box-shadow: 0 6px 12px rgba(0,0,0,.45);
  transform: translate(-50%, -50%) scale(1.06);
  transition: .12s ease-out;
}

.yt-thumb__placeholder{
  width:100%;
  height:100%;
  background:#111;
}