/* Presentation only: two distinct viewing stages in the original V5.5 language. */
#presentation .presentation-shell { display: block; }
#presentation .presentation-copy { max-width: 900px; padding: 12px 12px 36px; }
#presentation .presentation-copy h2 { max-width: 820px; }
#presentation .presentation-tags { display: flex; flex-wrap: wrap; }
#presentation .presentation-note { color: #a8b6ca; }
#presentation .presentation-note p { font-size: 13px; }
.presentation-stages { position: relative; z-index: 2; display: grid; gap: 40px; }
.presentation-stage {
  display: grid;
  grid-template-columns: minmax(0, .34fr) minmax(0, .66fr);
  align-items: center;
  gap: 32px;
  padding: 28px;
  border: 1px solid rgba(104, 188, 255, .24);
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(18, 34, 53, .85), rgba(5, 10, 19, .94));
  box-shadow: inset 0 1px 0 rgba(255,255,255,.055);
}
.presentation-stage-full { border-color: rgba(145, 126, 255, .3); background: linear-gradient(135deg, rgba(30, 27, 52, .8), rgba(5, 10, 19, .94)); }
.stage-copy { min-width: 0; }
.stage-copy h3 { margin: 0 0 18px; color: #f0f5ff; font-size: clamp(24px, 2.3vw, 32px); line-height: 1.22; letter-spacing: -.025em; }
.stage-copy p { margin: 0; color: #b5c2d5; font-size: 16px; line-height: 1.7; }
#presentation .presentation-stage .video-console { width: 100%; border-radius: 16px; }
#presentation .video-console-footer { flex-wrap: wrap; padding: 12px 16px; gap: 8px 16px; }
#presentation .video-console-footer a { white-space: normal; min-height: 32px; }
#presentation .video-console-footer a:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }
@media (max-width: 900px) {
  #presentation .presentation-shell { padding: 24px; }
  .presentation-stage { grid-template-columns: 1fr; gap: 24px; }
}
@media (max-width: 600px) {
  #presentation .presentation-shell { padding: 16px; border-radius: 24px; }
  #presentation .presentation-copy { padding: 8px 0 32px; }
  #presentation .presentation-copy h2 { font-size: 34px; line-height: 1.1; }
  .presentation-stages { gap: 32px; }
  .presentation-stage { padding: 18px 12px 12px; border-radius: 18px; }
  .stage-copy { padding: 0 4px; }
  .stage-copy h3 { font-size: 24px; }
  .stage-copy p { font-size: 16px; line-height: 1.65; }
}