/* Curated recordings share the article's family colors and editorial rhythm. */
.research-page .post-body .demo-context {
  padding: 14px 0 14px 18px;
  border-left: 2px solid var(--border-strong);
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.65;
}
.demo-context > span { display: block; margin-bottom: 4px; color: var(--text-secondary); font-weight: 500; }
.research-page .post-body .demo-figure {
  margin: 28px 0 34px;
  border-color: var(--border);
  border-radius: 14px;
  box-shadow: 0 4px 20px rgb(0 0 0 / .025);
  scroll-margin-top: 100px;
}
.demo-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px 24px;
  padding: 22px 24px 20px;
}
.demo-heading > div { min-width: 0; }
.demo-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  color: var(--text-muted);
  font: 12px/1.6 var(--mono);
  letter-spacing: .025em;
}
.demo-kicker::before { content: ''; width: 16px; height: 2px; background: var(--family); }
.research-page .demo-heading h3 {
  margin: 0;
  font-size: clamp(19px, 2vw, 23px);
  line-height: 1.3;
  font-weight: 500;
  letter-spacing: -.015em;
  text-wrap: balance;
}
.demo-meta { flex-shrink: 0; text-align: right; color: var(--text-muted); font: 12px/1.7 var(--mono); }
.demo-meta span { display: block; }
.demo-meta span:first-child { color: var(--text-secondary); }
.demo-player { position: relative; background: var(--surface-1); }
.demo-stage { position: relative; isolation: isolate; background: #080a0d; }
.demo-video { display: block; width: 100%; height: auto; background: #080a0d; object-fit: contain; }
.has-custom-player .demo-video { cursor: pointer; }
.demo-player [hidden] { display: none !important; }
.demo-cover-play {
  position: absolute;
  z-index: 1;
  left: 20px;
  bottom: 20px;
  display: inline-flex;
  align-items: center;
  gap: 11px;
  min-height: 44px;
  padding: 0 15px;
  border: 1px solid rgb(255 255 255 / .22);
  border-radius: 9px;
  color: #fff;
  background: rgb(16 23 29 / .72);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 2px 12px rgb(0 0 0 / .12);
  cursor: pointer;
  transition: background .16s ease, border-color .16s ease;
}
.demo-cover-play > svg { width: 17px; height: 17px; }
.demo-cover-play:hover { background: rgb(16 23 29 / .9); border-color: rgb(255 255 255 / .42); }
.demo-cover-label { font: 500 13px/1.4 var(--sans, system-ui, sans-serif); letter-spacing: .01em; }
.demo-cover-duration { padding-left: 11px; border-left: 1px solid rgb(255 255 255 / .24); color: rgb(255 255 255 / .72); font: 12px/1.4 var(--mono); }
.demo-player.is-scrubbing .demo-video { cursor: grabbing; }
.demo-controls {
  display: grid;
  grid-template-columns: 40px minmax(40px, 1fr) auto 40px 40px;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  background: var(--surface-1);
  border-bottom: 1px solid var(--grid);
}
.research-page .demo-control {
  display: inline-grid;
  place-items: center;
  box-sizing: border-box;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 0;
  border-radius: 8px;
  color: var(--text-secondary);
  background: transparent;
  text-decoration: none;
  box-shadow: none;
  cursor: pointer;
  transition: background .16s ease, color .16s ease;
}
.research-page .demo-control:hover { color: var(--text-primary); background: var(--surface-2); border: 0; }
.research-page .demo-toggle { color: var(--family); background: color-mix(in srgb, var(--family) 8%, var(--surface-1)); }
.research-page .demo-toggle:hover { color: var(--family); background: color-mix(in srgb, var(--family) 14%, var(--surface-1)); }
.demo-clock { display: inline-flex; gap: 7px; margin: 0 8px; font: 12px/1.4 var(--mono); font-variant-numeric: tabular-nums; white-space: nowrap; }
.demo-elapsed { color: var(--text-secondary); }
.demo-total, .demo-time-divider { color: var(--text-muted); }
.demo-seek {
  --played: 0%;
  appearance: none;
  -webkit-appearance: none;
  width: 100%;
  min-width: 0;
  height: 40px;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 4px;
  background: transparent;
  cursor: pointer;
  accent-color: var(--family);
}
.demo-seek::-webkit-slider-runnable-track {
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(to right, var(--family) 0 var(--played), var(--border-strong) var(--played) 100%);
}
.demo-seek::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 10px;
  height: 10px;
  margin-top: -3.5px;
  border: 2px solid var(--surface-1);
  border-radius: 50%;
  background: var(--family);
  box-shadow: 0 0 0 1px var(--family);
}
.demo-seek::-moz-range-track { height: 3px; border-radius: 3px; background: var(--border-strong); }
.demo-seek::-moz-range-progress { height: 3px; border-radius: 3px; background: var(--family); }
.demo-seek::-moz-range-thumb { box-sizing: border-box; width: 10px; height: 10px; border: 2px solid var(--surface-1); border-radius: 50%; background: var(--family); box-shadow: 0 0 0 1px var(--family); }
.demo-seek:disabled { opacity: .45; cursor: default; }
.research-page .demo-player-status { margin: 0; padding: 10px 24px; color: var(--text-secondary); font-size: 14px; }
.demo-player.is-loading .demo-stage::after {
  content: '';
  position: absolute;
  top: calc(50% - 16px);
  left: calc(50% - 16px);
  width: 32px;
  height: 32px;
  border: 2px solid rgb(255 255 255 / .35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: demo-buffering .8s linear infinite;
  pointer-events: none;
}
@keyframes demo-buffering { to { transform: rotate(360deg); } }
.research-page .demo-figure figcaption { display: block; padding: 18px 24px 20px; border-top: 0; font-size: 14px; }
.research-page .demo-figure figcaption p { max-width: 82ch; margin: 0; color: var(--text-secondary); font-size: 14px; line-height: 1.7; }
.research-page .demo-figure figcaption .demo-footnote { margin-top: 7px; color: var(--text-muted); font-size: 12px; line-height: 1.65; }
.research-page .demo-figure figcaption .demo-download { display: inline-block; margin-top: 12px; color: var(--text-muted); font-size: 12px; }
.demo-design-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--grid); }
.demo-design { min-width: 0; background: #000; }
.demo-design img { width: 100%; height: auto; aspect-ratio: 4/3; object-fit: contain; }
.demo-design > span { display: block; padding: 12px 16px; background: var(--surface-2); color: var(--text-secondary); text-align: center; font: 14px/1.5 var(--mono); }
.demo-print-poster { display: none; }
.demo-player:fullscreen { display: flex; flex-direction: column; width: 100%; height: 100%; background: #080a0d; }
.demo-player:fullscreen .demo-stage { flex: 1; min-height: 0; display: grid; place-items: center; }
.demo-player:fullscreen .demo-video { position: absolute; inset: 0; width: 100%; height: 100%; }
.demo-player:fullscreen .demo-controls { flex-shrink: 0; width: min(100%, 1100px); align-self: center; box-sizing: border-box; border: 0; }
.demo-player:fullscreen .demo-player-status { background: var(--surface-1); }
@media (max-width: 680px) {
  .demo-heading { flex-direction: column; align-items: flex-start; gap: 10px; padding: 18px; }
  .demo-meta { display: flex; flex-wrap: wrap; gap: 0 14px; text-align: left; }
  .research-page .demo-figure figcaption { padding: 15px 18px 18px; }
  .demo-controls { padding: 8px 10px; gap: 5px; }
  .demo-clock { margin: 0 4px; font-size: 12px; gap: 4px; }
  .demo-cover-play { left: 12px; bottom: 12px; gap: 9px; padding: 0 12px; }
  .demo-design-grid { grid-template-columns: 1fr; }
  .demo-design .zoom-image { max-width: 420px; margin: 0 auto; }
}
@media (max-width: 440px) {
  .demo-controls { grid-template-columns: 44px minmax(0, 1fr) 44px 44px; row-gap: 0; padding: 3px 10px 7px; }
  .demo-seek { grid-column: 1 / -1; grid-row: 1; height: 28px; }
  .demo-toggle { grid-column: 1; grid-row: 2; }
  .demo-clock { grid-column: 2; grid-row: 2; font-size: 12px; }
  .demo-fullscreen { grid-column: 3; grid-row: 2; }
  .demo-controls .demo-download { grid-column: 4; grid-row: 2; }
  .research-page .demo-control { width: 44px; height: 44px; }
}
@media (prefers-reduced-motion: reduce) {
  .demo-cover-play, .demo-cover-label, .demo-control { transition: none; }
  .demo-player.is-loading .demo-stage::after { animation: none; }
}
@media print {
  .demo-player, .demo-video, .demo-download { display: none !important; }
  .demo-print-poster { display: block; width: 100%; height: auto; }
  .demo-design-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .demo-heading { break-after: avoid; }
}

/* Keep the shared player comfortable inside the task's demo column. */
.task-demo { container-type: inline-size; }
.task-demo .demo-player { border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.task-demo .demo-video { border-radius: 0; }
.task-demo .demo-controls { border-bottom: 0; padding: 7px 9px; gap: 5px; }
.task-demo .demo-clock { font-size: 11px; gap: 4px; margin: 0 3px; }
.task-demo .demo-cover-play { left: 12px; bottom: 12px; }
.research-page .task-demo .demo-player-status { margin: 0; padding: 10px 14px; font-size: 12px; }
@container (max-width: 440px) {
  .task-demo .demo-controls { grid-template-columns: 40px minmax(0, 1fr) 40px 40px; row-gap: 0; padding: 3px 8px 7px; }
  .task-demo .demo-seek { grid-column: 1 / -1; grid-row: 1; height: 28px; }
  .task-demo .demo-toggle { grid-column: 1; grid-row: 2; }
  .task-demo .demo-clock { grid-column: 2; grid-row: 2; }
  .task-demo .demo-fullscreen { grid-column: 3; grid-row: 2; }
  .task-demo .demo-download { grid-column: 4; grid-row: 2; }
  .research-page .task-demo .demo-control { width: 40px; height: 40px; }
}

/* A compact, centered learning-loop demo; expand on portrait screens. */
.research-page .post-body :is(#demo-astra-cube-loop, #demo-astra-stability) {
  width: 60%;
  max-width: 100%;
  margin-inline: auto;
  container-type: inline-size;
}
:is(#demo-astra-cube-loop, #demo-astra-stability) .demo-controls { grid-template-columns: 40px minmax(0, 1fr) 40px 40px; gap: 0 5px; padding: 3px 8px 7px; }
:is(#demo-astra-cube-loop, #demo-astra-stability) .demo-seek { grid-column: 1 / -1; grid-row: 1; height: 28px; }
:is(#demo-astra-cube-loop, #demo-astra-stability) .demo-toggle { grid-column: 1; grid-row: 2; }
:is(#demo-astra-cube-loop, #demo-astra-stability) .demo-clock { grid-column: 2; grid-row: 2; font-size: 11px; margin: 0 3px; gap: 4px; }
:is(#demo-astra-cube-loop, #demo-astra-stability) .demo-fullscreen { grid-column: 3; grid-row: 2; }
:is(#demo-astra-cube-loop, #demo-astra-stability) .demo-controls .demo-download { grid-column: 4; grid-row: 2; }
.research-page :is(#demo-astra-cube-loop, #demo-astra-stability) .demo-control { width: 40px; height: 40px; }
:is(#demo-astra-cube-loop, #demo-astra-stability) .demo-cover-play { left: 10px; bottom: 10px; min-height: 36px; }
.research-page :is(#demo-astra-cube-loop, #demo-astra-stability) figcaption { padding: 12px 14px; }
.research-page :is(#demo-astra-cube-loop, #demo-astra-stability) figcaption p { font-size: 12px; line-height: 1.6; }
@media (orientation: portrait) {
  .research-page .post-body :is(#demo-astra-cube-loop, #demo-astra-stability) { width: 70%; }
}
@media (max-width: 680px) {
  .research-page .post-body :is(#demo-astra-cube-loop, #demo-astra-stability) { width: 100%; }
}

/* Scrollable overview of every task, sharing the task-detail recordings. */
#task-video-carousel .atlas-strip {
  display: grid;
  grid-template-columns: none;
  grid-auto-flow: column;
  grid-auto-columns: clamp(260px, 31%, 420px);
  gap: 12px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  padding: 3px 2px 12px;
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}
#task-video-carousel .atlas-tile { scroll-snap-align: start; padding-bottom: 44px; }
#task-video-carousel .atlas-video, #task-video-carousel .atlas-placeholder {
  display: block; width: 100%; height: auto; aspect-ratio: 16 / 9;
  object-fit: contain; background: #080a0d;
}
#task-video-carousel .atlas-placeholder { display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 8px; color: #aaa; font: 12px/1.5 var(--mono); }
#task-video-carousel .atlas-placeholder > span:first-child { font-size: 28px; }
#task-video-carousel .atlas-id { max-width: calc(100% - 20px); box-sizing: border-box; line-height: 1.4; }
#task-video-carousel .atlas-caption { height: 44px; }
#task-video-carousel .atlas-caption > span:last-child { display: inline; }
#task-video-carousel .atlas-footer { display: flex; align-items: center; justify-content: space-between; gap: 12px 24px; margin-top: 8px; }
#task-video-carousel .atlas-controls { display: flex; align-items: center; gap: 6px; flex-shrink: 0; }
#task-video-carousel [hidden] { display: none !important; }
#task-video-carousel button { min-width: 38px; min-height: 38px; padding: 6px 12px; color: var(--text-secondary); background: var(--surface-1); border: 1px solid var(--border-strong); border-radius: 6px; font: 11px/1.5 var(--mono); cursor: pointer; }
#task-video-carousel button:hover { background: var(--surface-2); color: var(--text-primary); }
#task-video-carousel :focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }
@media (max-width: 680px) {
  #task-video-carousel .atlas-strip { grid-auto-columns: 84%; gap: 10px; }
  #task-video-carousel .atlas-footer { align-items: flex-start; flex-direction: column; gap: 10px; }
  #task-video-carousel .atlas-controls { align-self: flex-end; }
}
@media print {
  #task-video-carousel .atlas-strip { grid-auto-flow: row; grid-template-columns: repeat(3, 1fr); overflow: visible; }
  #task-video-carousel .atlas-controls { display: none; }
}

/* Task names sit below the video, without overlay labels or link arrows. */
#task-video-carousel .atlas-caption { position: static; min-height: 44px; height: auto; padding: 12px 13px; box-sizing: border-box; line-height: 1.4; }
#task-video-carousel .atlas-tile { padding-bottom: 0; }
#task-video-carousel .atlas-caption .family-dot { flex-shrink: 0; margin-left: 0; }

#task-video-carousel .atlas-strip.is-auto-scrolling { scroll-snap-type: none; scroll-behavior: auto; }

/* A continuous loop has no meaningful scrollbar start or end. */
#task-video-carousel .atlas-strip.is-auto-scrolling { scrollbar-width: none; }
#task-video-carousel .atlas-strip.is-auto-scrolling::-webkit-scrollbar { display: none; }
@media print {
  #task-video-carousel .atlas-copy { display: none; }
}