/* T-105yt/20260907t — YouTube embed for beginners guide */
.guide-video-frame {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 */
  height: 0;
  overflow: hidden;
  border-radius: 14px;
  border: 1px solid var(--line, #333);
  background: #000;
  box-shadow: var(--shadow, none);
}
.guide-video-frame iframe.guide-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  border-radius: 14px;
}
.guide-video-link { margin: 10px 0 0; font-size: 0.92rem; opacity: 0.85; }
.guide-video-link a { color: inherit; }