.scene-backdrop { display: none; position: fixed; inset: 0; z-index: 0; overflow: hidden; pointer-events: none; background: var(--paper); }
html[data-view="welcome"] .scene-backdrop { display: block; }
.scene-layer { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transition: none; }
.scene-layer.is-active { opacity: 1; }
.scene-layer.is-incoming { z-index: 1; }
.scene-layer.is-transitioning { transition: opacity 1200ms ease; will-change: opacity; }
html[data-view="welcome"] .cursor-fx-canvas { mix-blend-mode: soft-light; }
.intro .intro-copy { min-width: 0; padding: 32px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); }
.intro .intro-hero { grid-template-columns: minmax(0, 480px) minmax(0, 360px); align-items: start; justify-content: space-between; gap: 48px; padding: 48px 0 96px; }
.intro .intro-copy { align-self: start; }
.intro #intro-title { font-size: clamp(32px, 3.5vw, 44px); }
.intro .intro-example { width: 100%; max-width: 360px; margin-top: 112px; justify-self: end; }
.intro .intro-lead { margin-top: 20px; }
.scene-capsule { display: flex; flex: 0 0 auto; align-items: center; gap: 2px; padding: 2px; border: 1px solid var(--line); border-radius: var(--radius-large); background: var(--paper); }
.scene-readout { color: var(--ink-2); font-size: var(--text-xs); white-space: nowrap; }
#scene-count { margin-right: 5px; font-variant-numeric: tabular-nums; }
.scene-capsule button { display: grid; place-items: center; flex: 0 0 32px; width: 32px; min-height: 36px; padding: 0; border: 0; border-radius: var(--radius-round); background: transparent; color: var(--accent-hover); font-size: 22px; line-height: 1; }
.scene-capsule #scene-play { font-size: 13px; border-left: 1px solid var(--line); border-radius: var(--radius-flat); }
.scene-capsule button:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
@media (max-width: 1099px) {
  /* Reserve a landscape opening before the example enters the next screen. */
  .intro .intro-hero { grid-template-columns: minmax(0, 1fr); grid-template-rows: minmax(calc(100svh - 80px), auto) auto; gap: 64px; }
  .intro .intro-copy { width: 100%; max-width: 480px; }
  .intro .intro-example { margin: 0; justify-self: end; }
}
@media (max-width: 720px) {
  .scene-layer.is-transitioning { transition: none; will-change: auto; }
  .intro .intro-hero { gap: 48px; padding-top: 24px; }
  .intro .intro-copy { padding: 20px; }
  .intro .eyebrow { margin-bottom: 14px; }
  .intro .intro-lead { margin-top: 14px; }
  .intro .intro-links { margin-top: 20px; gap: 16px; }
}
@media (max-width: 700px) {
  #scene-count { display: none; }
  .scene-capsule { gap: 0; }
  .scene-capsule button { flex-basis: 24px; width: 24px; min-height: 36px; font-size: 20px; }
  .scene-readout { font-size: 10px; }
}
@media (max-width: 380px) {
  .intro .intro-copy { padding: 20px 16px; }
}
@media (prefers-reduced-motion: reduce) {
  .scene-layer.is-transitioning { transition: none; will-change: auto; }
}
@media (hover: none), (pointer: coarse) {
  .scene-layer.is-transitioning { transition: none; will-change: auto; }
}