@font-face {
  font-family: "Inter";
  src: url("./fonts/InterVariable.woff2") format("woff2");
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}

:root {
  color-scheme: light;
  --ink: #172b46;
  --muted: #52647a;
  /* Brand blue follows the Ant Design color specification. */
  --brand: #1677ff;
  --brand-strong: #0958d9;
  --brand-hover: #003eb3;
  --accent: var(--brand-strong);
  --line: #dee7f1;
  --wash: #f7f9fc;
  --paper: #fff;
  --blue-soft: #edf5ff;
  --blue-line: #c3dcff;
  --rose: #9f365e;
  --type-caption: .8125rem;
  --type-small: .875rem;
  --type-body: 1rem;
  --type-lead: 1.125rem;
  --type-title: 1.25rem;
  --type-section: clamp(2rem, 3.7vw, 3rem);
  --type-hero: clamp(3rem, 7.5vw, 6rem);
  --section-space: clamp(4rem, 7.5vw, 6rem);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-optical-sizing: auto;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  color: var(--ink);
  background: var(--paper);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 7rem; }
body { margin: 0; font-size: var(--type-body); line-height: 1.7; }
a { color: inherit; text-underline-offset: .22em; }
button, input { font: inherit; }
button { cursor: pointer; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, summary:focus-visible, [role="tabpanel"]:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 5px;
}
button, a, summary { -webkit-tap-highlight-color: transparent; }
img { max-width: 100%; }
h1, h2, h3, p, figure { margin: 0; }
h1, h2, h3 { text-wrap: balance; }
h1 { font-size: var(--type-hero); font-weight: 600; line-height: 1.08; letter-spacing: -.045em; }
h2 { font-size: var(--type-section); font-weight: 600; line-height: 1.18; letter-spacing: -.035em; }
h3 { font-size: var(--type-title); font-weight: 600; line-height: 1.35; letter-spacing: -.02em; }
strong { font-weight: 600; }
p + p { margin-top: 1rem; }
.wrap { width: min(1160px, calc(100% - 4rem)); margin-inline: auto; }
.skip-link { position: absolute; left: 1rem; top: -8rem; z-index: 20; background: #fff; padding: .6rem 1rem; }
.skip-link:focus { top: 1rem; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.section-number, .eyebrow, .model-type { font-size: var(--type-small); font-weight: 600; line-height: 1.5; letter-spacing: 0; color: var(--accent); }
.section-number { display: block; margin-bottom: .9rem; }

/* A spacious research introduction, followed directly by the demonstrations. */
.site-header { position: sticky; top: 0; z-index: 10; background: #ffffffed; border-bottom: 1px solid var(--line); backdrop-filter: blur(16px); }
.header-inner { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.wordmark { display: inline-flex; align-items: baseline; font-size: 1.3rem; font-weight: 600; letter-spacing: -.035em; text-decoration: none; line-height: 1.2; white-space: nowrap; }
.wordmark span { color: var(--brand); }
.wordmark-with-logo { align-items: center; gap: .45rem; }
.wordmark .wordmark-text { color: var(--ink); }
.brand-logo { display: block; width: 3rem; height: 3rem; flex-shrink: 0; object-fit: contain; border-radius: 50%; }
nav { display: flex; flex-wrap: wrap; align-items: center; gap: 1.7rem; }
nav a { display: inline-flex; align-items: center; gap: .35rem; min-height: 44px; color: var(--muted); font-size: var(--type-small); font-weight: 500; text-decoration: none; }
nav a:hover { color: var(--accent); }
nav a:last-child { color: var(--accent); }
.launch-hero { padding-block: clamp(3.5rem, 6vw, 5.25rem) 3.75rem; text-align: center; }
.eyebrow { font-size: var(--type-body); font-weight: 500; color: var(--accent); }
.launch-hero h1 { max-width: 15ch; margin: 1.35rem auto 1.6rem; font-weight: 500; letter-spacing: -.055em; line-height: 1.03; }
.launch-hero h1 span { color: var(--brand); }
.launch-description { max-width: 61ch; margin-inline: auto; font-size: var(--type-lead); color: var(--muted); line-height: 1.7; text-wrap: pretty; }
.links { display: flex; flex-wrap: wrap; justify-content: center; gap: .8rem; margin-top: 1.8rem; }
.button { display: inline-flex; justify-content: center; align-items: center; gap: .7rem; min-height: 50px; padding: .75rem 1.4rem; border: 1px solid var(--line); border-radius: 999px; background: #fff; text-decoration: none; font-size: var(--type-small); font-weight: 500; transition: background .2s, border-color .2s; }
.button:hover { background: var(--wash); border-color: var(--accent); }
.button.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.button.primary:hover { background: var(--brand-hover); }
.play-icon { font-size: .7rem; }
.launch-authors { display: flex; flex-wrap: wrap; justify-content: center; align-items: baseline; gap: .3rem .6rem; margin-top: 1.7rem; color: var(--muted); font-size: var(--type-small); }
.launch-authors > span { display: inline-block; }
.launch-authors strong { color: var(--ink); font-weight: 500; }
.project-links { display: flex; flex-wrap: wrap; justify-content: center; gap: .5rem; margin-top: .85rem; }
.project-links a { display: inline-flex; align-items: center; justify-content: center; gap: .45rem; min-height: 44px; padding: .45rem .9rem; border: 1px solid var(--blue-line); border-radius: 999px; color: var(--accent); background: var(--paper); font-size: var(--type-small); font-weight: 500; text-decoration: none; }
.project-links a:hover { background: var(--blue-soft); border-color: var(--accent); }
.section-number { display: block; margin-bottom: 1rem; color: var(--accent); font-size: var(--type-small); font-weight: 500; }
.demo-heading, .wide-heading { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); align-items: end; gap: 4rem; margin-bottom: 2.5rem; }
.demo-heading > p, .wide-heading > p { max-width: 48ch; color: var(--muted); font-size: var(--type-body); line-height: 1.7; text-wrap: pretty; }
.demo-section { padding-block: 2rem var(--section-space); }
.demo-heading h2, .wide-heading h2 { font-weight: 500; }

/* Every capability has a visible scene, a short promise and a playback length. */
.demo-picker { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.1rem; }
.demo-tab { display: block; padding: 0; min-width: 0; overflow: hidden; text-align: left; color: var(--ink); background: var(--paper); border: 1px solid var(--line); border-radius: 16px; transition: border-color .2s, box-shadow .2s; }
.demo-tab:hover { border-color: #89baff; }
.demo-tab[aria-selected="true"] { border-color: var(--brand); box-shadow: 0 0 0 1px var(--brand); }
.demo-cover { position: relative; height: 150px; display: block; overflow: hidden; background: var(--blue-soft); }
.demo-cover > img { width: 100%; height: 100%; display: block; object-fit: cover; }
.demo-cover > .cover-label { position: absolute; left: .85rem; top: .85rem; background: #ffffffed; padding: .22rem .5rem; border-radius: 5px; color: var(--ink); font-size: var(--type-caption); line-height: 1.5; }
.cover-play { display: flex; align-items: center; justify-content: center; position: absolute; right: .85rem; bottom: .85rem; width: 32px; height: 32px; border-radius: 50%; background: #fff; color: var(--accent); font-size: .7rem; padding-left: 2px; }
.quote-cover { padding: 1rem 1.15rem; background: linear-gradient(135deg, #edf5ff, #f7faff); }
.quote-cover > .cover-label { position: static; padding: 0; display: block; background: none; color: var(--accent); }
.cover-quote { display: block; font-size: 1.05rem; max-width: 26ch; margin-top: .75rem; padding-right: 1rem; font-weight: 500; line-height: 1.45; letter-spacing: -.02em; }
.cover-mini { display: none; }
.demo-tab-copy { display: block; padding: 1.2rem 1.3rem; }
.demo-tab-meta { display: flex; justify-content: space-between; gap: .75rem; margin-bottom: .55rem; color: var(--muted); font-size: var(--type-caption); font-variant-numeric: tabular-nums; }
.demo-tab-meta > span { white-space: nowrap; }
.demo-tab-copy > strong { display: block; font-size: 1.3rem; font-weight: 500; letter-spacing: -.025em; line-height: 1.35; }
.demo-tab-description { display: block; color: var(--muted); font-size: var(--type-small); margin-top: .5rem; line-height: 1.6; min-height: 3.2em; }
.demo-tab-action { display: flex; align-items: center; justify-content: space-between; gap: 1rem; color: var(--accent); font-size: var(--type-small); margin-top: 1rem; }
.demo-tab[aria-selected="true"] .demo-tab-action { font-weight: 600; }
.demo-panel { background: #fff; border: 1px solid var(--line); border-radius: 20px; overflow: hidden; }
.demo-panel-top { display: flex; justify-content: space-between; flex-wrap: wrap; gap: .4rem 1rem; background: var(--wash); border-bottom: 1px solid var(--line); padding: 1rem 2.5rem; color: var(--muted); font-size: var(--type-caption); }
.demo-panel-top > span:first-child { color: var(--ink); font-weight: 500; }
.demo-content { display: grid; grid-template-columns: minmax(0, 1.7fr) minmax(0, .9fr); gap: 3rem; padding: 2.5rem; }
.demo-player { min-width: 0; }
.demo-description { border-left: 1px solid var(--line); padding-left: 2.2rem; }
.demo-takeaway { margin-top: 1.75rem; padding-top: 1.2rem; border-top: 1px solid var(--line); }
.demo-takeaway > span { color: var(--ink); font-weight: 500; font-size: var(--type-small); }
.demo-takeaway > p { color: var(--muted); font-size: var(--type-small); line-height: 1.7; margin-top: .55rem; }
.demo-media, .section-body, .section-heading { min-width: 0; }
.demo-paper-example { display: block; width: 100%; height: auto; min-height: 180px; object-fit: contain; background: #fff; border-radius: 8px; }
.demo-description .section-number { color: var(--accent); margin-bottom: .75rem; }
.demo-description h3 { font-size: clamp(1.5rem, 2.5vw, 2rem); line-height: 1.25; margin-bottom: 1rem; color: var(--ink); }
.demo-description > p { color: var(--muted); font-size: var(--type-body); line-height: 1.65; }
.demo-description > a { display: inline-block; margin-top: .75rem; font-size: var(--type-small); color: var(--accent); }
.stream-context { border: 1px solid var(--line); background: var(--paper); border-radius: 9px; padding: 1rem; }
.stream-label { display: block; color: var(--muted); font-size: var(--type-caption); font-weight: 500; margin-bottom: .65rem; }
.filmstrip { display: block; width: 100%; height: auto; border-radius: 4px; }
.walkthrough-state { font-size: var(--type-small); line-height: 1.5; color: var(--accent); margin-top: .8rem; }
.walkthrough-transcript { list-style: none; padding: 0; margin: 1rem 0 0; display: flex; flex-direction: column; gap: .65rem; }
.transcript-item { padding: .75rem 1rem; border: 1px solid transparent; background: var(--paper); color: var(--ink); transition: border-color .2s, background .2s; border-radius: 8px; }
.transcript-item.has-played { color: var(--ink); }
.transcript-item.is-active { color: var(--ink); border-color: var(--blue-line); background: var(--blue-soft); box-shadow: inset 3px 0 0 var(--brand); }
.transcript-item.event { border-style: dashed; background: var(--blue-soft); }
.transcript-item.interruption.is-active { border-color: var(--blue-line); background: var(--paper); box-shadow: inset 3px 0 0 var(--brand); }
.transcript-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .25rem .75rem; color: var(--muted); font-size: var(--type-caption); }
.transcript-head > strong { min-width: 0; overflow-wrap: anywhere; }
.transcript-head > span { margin-left: auto; flex-shrink: 0; white-space: nowrap; font-variant-numeric: tabular-nums; }
.transcript-item p { font-size: .9375rem; line-height: 1.6; margin-top: .35rem; }
.transcript-note { display: block; font-size: var(--type-caption); color: var(--rose); margin-top: .35rem; }
.audio-lanes { display: grid; gap: .7rem; }
.audio-lanes > div { display: grid; grid-template-columns: 48px minmax(0, 1fr); align-items: center; gap: .5rem; font-size: var(--type-caption); color: var(--muted); }
.audio-lanes > div > span { padding: .45rem .7rem; border-radius: 4px; }
.listening-lane { border: 1px solid var(--blue-line); background: var(--blue-soft); color: var(--accent); }
.speaking-lane { border: 1px solid var(--blue-line); background: var(--blue-soft); color: var(--accent); }
.playback-bar { display: flex; align-items: center; gap: 1.25rem; padding: 1.25rem 0 1rem; border-top: 0; }
.walkthrough-play { color: #fff; background: var(--accent); border: 0; border-radius: 999px; min-height: 48px; min-width: 165px; font-size: var(--type-small); font-weight: 600; padding: .55rem 1rem; }
.walkthrough-play:hover { background: var(--brand-hover); }
.timeline-slider { flex: 1; min-width: 40px; accent-color: var(--accent); cursor: pointer; height: 32px; }
.playback-time { color: var(--muted); font-size: var(--type-caption); font-variant-numeric: tabular-nums; white-space: nowrap; }
.walkthrough-chapters { display: flex; flex-wrap: wrap; gap: .5rem; padding: 0 0 .5rem; }
.walkthrough-chapters button { display: inline-flex; align-items: baseline; gap: .55rem; max-width: 100%; text-align: left; font-size: var(--type-caption); border: 1px solid var(--line); border-radius: 6px; color: var(--muted); background: var(--paper); min-height: 36px; padding: .35rem .7rem; }
.chapter-time { flex-shrink: 0; white-space: nowrap; font-variant-numeric: tabular-nums; }
.walkthrough-chapters button:hover { background: var(--blue-soft); border-color: var(--blue-line); color: var(--accent); }
.playback-note { font-size: var(--type-caption); color: var(--muted); line-height: 1.65; margin-top: .5rem; padding: 0; }
.recorded-demo { display: block; width: 100%; height: auto; max-height: 650px; aspect-ratio: 16/9; background: #edf2f8; border-radius: 7px; }
.media-error { font-size: var(--type-small); color: var(--rose); }
.media-error a { text-decoration: underline; }
.media-tools { display: flex; align-items: center; flex-wrap: wrap; gap: .5rem; margin: .5rem 0 1rem; }
.media-tool { min-height: 44px; padding: .45rem .8rem; border: 1px solid var(--line); border-radius: 7px; background: var(--paper); color: var(--muted); font-size: var(--type-small); }
.media-tool:hover, .media-tool[aria-pressed="true"] { background: var(--blue-soft); border-color: var(--blue-line); color: var(--accent); }
.media-volume { display: flex; align-items: center; min-height: 44px; margin-right: auto; }
.media-volume input { width: 80px; max-width: 20vw; accent-color: var(--accent); }

/* A shared scene player for recordings and manuscript examples. */
[hidden] { display: none !important; }
.scene-spotlight { display: block; width: 100%; text-align: left; margin-top: 1.4rem; padding: .75rem 1rem; min-height: 48px; border: 1px solid var(--blue-line); border-radius: 7px; color: var(--accent); background: var(--paper); font-size: var(--type-small); font-weight: 600; line-height: 1.5; font-variant-numeric: tabular-nums; }
.scene-spotlight:hover { background: var(--blue-soft); border-color: var(--brand); }
.scene-stage { --scene-accent: var(--ink); background: var(--paper); border: 0; border-radius: 0; overflow: hidden; box-shadow: none; }
.demo-panel[data-accent="interruption"] .scene-stage { --scene-accent: var(--ink); border-color: transparent; }
.demo-panel[data-accent="delegation"] .scene-stage { --scene-accent: var(--ink); border-color: transparent; }
.demo-panel[data-accent="response"] .scene-stage { --scene-accent: var(--ink); border-color: transparent; }
.scene-topline { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0 0 .5rem; color: var(--muted); font-size: var(--type-caption); }
.scene-status { display: inline-flex; align-items: center; gap: .5rem; }
.scene-status::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: #73849a; }
.demo-panel[data-playing="true"] .scene-status::before { background: var(--accent); box-shadow: 0 0 0 4px #1677ff12; }
.scene-counter { font-variant-numeric: tabular-nums; color: var(--muted); }
.scene-phase { padding: .7rem 0 1.25rem; min-height: 110px; }
.scene-phase h4 { margin: 0; font-size: clamp(1.25rem, 2.2vw, 1.6rem); font-weight: 600; letter-spacing: -.025em; line-height: 1.25; text-wrap: balance; color: var(--ink); }
.scene-phase > p { margin-top: .5rem; font-size: var(--type-small); color: var(--muted); line-height: 1.6; }
.scene-film { padding: 0 0 1.1rem; }
.scene-film-label, .scene-film-axis { display: flex; align-items: center; justify-content: space-between; gap: .5rem; font-size: var(--type-caption); color: var(--muted); line-height: 1.5; }
.scene-film-label { margin-bottom: .55rem; flex-wrap: wrap; }
.scene-film-frame { position: relative; overflow: hidden; border-radius: 5px; background: #edf2f8; }
.scene-film-frame .filmstrip { height: auto; }
.film-cursor { position: absolute; top: 0; bottom: 0; width: 2px; background: var(--accent); box-shadow: 0 0 0 3px #ffffffcc; pointer-events: none; }
.film-cursor::before { content: ""; display: block; width: 8px; height: 7px; background: var(--accent); transform: translateX(-3px); border-radius: 0 0 3px 3px; }
.scene-film-axis { margin-top: .4rem; font-variant-numeric: tabular-nums; }
.scene-channels { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .5rem; padding: 0 0 1.25rem; }
.scene-channel { --channel: var(--accent); padding: .7rem .8rem; border: 1px solid transparent; border-radius: 8px; background: var(--wash); color: var(--muted); min-width: 0; --channel-soft: var(--blue-soft); --channel-line: var(--blue-line); }
.scene-channel.listen { --channel: var(--accent); --channel-soft: var(--blue-soft); --channel-line: var(--blue-line); }
.scene-channel.delegate { --channel: var(--accent); --channel-soft: var(--blue-soft); --channel-line: var(--blue-line); }
.channel-heading { display: flex; align-items: baseline; justify-content: space-between; flex-wrap: wrap; gap: .2rem .4rem; font-size: var(--type-small); }
.channel-state { font-size: var(--type-caption); color: var(--muted); }
.channel-description { display: block; font-size: var(--type-caption); margin-top: .15rem; }
.channel-meter { height: 3px; margin-top: .65rem; border-radius: 3px; overflow: hidden; background: #e0e7f0; }
.channel-meter > span { display: block; width: 100%; height: 100%; background: transparent; }
.scene-channel[data-active="true"] { border-color: transparent; background: var(--blue-soft); }
.scene-channel[data-active="true"] .channel-heading, .scene-channel[data-active="true"] .channel-state { color: var(--channel); }
.scene-channel[data-active="true"] .channel-meter > span { background: var(--brand); }
.scene-channel[data-active="true"] .channel-meter > span::after { content: ""; display: block; width: 40%; height: 100%; background: #fff; opacity: .6; transform: translateX(-120%); animation: channel-flow 1.8s linear infinite; animation-play-state: paused; }
.demo-panel[data-playing="true"] .scene-channel[data-active="true"] .channel-meter > span::after { animation-play-state: running; }
.scene-conversation { height: 360px; overflow-y: auto; overscroll-behavior-y: contain; padding: 1.15rem; border-top: 0; background: var(--wash); scrollbar-width: thin; scrollbar-color: #c3d4e8 #f7f9fc; border-radius: 12px; }
.scene-conversation:focus-visible { outline: 2px solid var(--accent); outline-offset: -4px; }
.scene-opening { min-height: 100%; display: flex; flex-direction: column; justify-content: center; align-items: flex-start; gap: .85rem; max-width: 42ch; margin-inline: auto; }
.scene-opening-label { font-size: var(--type-caption); color: var(--accent); }
.scene-opening > p { color: var(--ink); font-size: var(--type-lead); line-height: 1.6; }
.scene-opening > small { color: var(--muted); font-size: var(--type-caption); }
.scene-start { border: 0; border-radius: 999px; padding: .6rem .9rem; min-height: 44px; background: var(--accent); color: #fff; font-size: var(--type-small); font-weight: 600; }
.scene-start:hover { background: var(--brand-hover); }
.scene-chat { margin: 0; gap: .85rem; }
.scene-chat .transcript-item { width: 90%; flex-shrink: 0; animation: message-arrive .25s ease-out; border-radius: 10px; }
.scene-chat .transcript-item.from-venus { margin-left: auto; background: var(--blue-soft); border-color: transparent; }
.scene-chat .transcript-item.from-venus.is-active { background: var(--blue-soft); border-color: var(--blue-line); box-shadow: inset 3px 0 0 var(--brand); }
.scene-chat .transcript-item.event { width: 100%; background: var(--paper); border-color: var(--blue-line); box-shadow: none; }
.scene-chat .transcript-item.interruption { border-color: var(--blue-line); }
.scene-chat .transcript-item.was-interrupted { border-style: dashed; background: var(--wash); box-shadow: none; border-color: var(--line); }
.scene-chat .transcript-item p { font-size: 1rem; line-height: 1.65; }
.scene-chat .transcript-item .transcript-note { color: var(--rose); }
.scene-recording .scene-conversation { height: auto; min-height: 170px; overflow: visible; }
.scene-recording .scene-opening { min-height: 132px; max-width: none; margin: 0; gap: .6rem; }
.scene-recording .scene-opening > p { font-size: var(--type-body); }
.scene-recording .scene-chat .transcript-item { width: 100%; }
.scene-recording.scene-dialogue .scene-conversation { height: 320px; overflow-y: auto; }
.scene-video .recorded-demo { border-radius: 10px; }
.playback-bar { flex-wrap: wrap; gap: .8rem 1.2rem; }
.walkthrough-play { min-width: 145px; }
.playback-time { margin-right: auto; }
.playback-speed { display: inline-flex; align-items: center; gap: .65rem; color: var(--muted); font-size: var(--type-caption); }
.playback-speed select { color-scheme: light; min-height: 40px; padding: .35rem .45rem; border: 1px solid #a7b8cc; border-radius: 5px; background: var(--paper); color: var(--ink); font-size: var(--type-small); }
.timeline-slider { flex-basis: 100%; width: 100%; order: 4; margin: 0; }
.walkthrough-chapters button[aria-current="step"] { background: var(--blue-soft); border-color: var(--blue-line); color: var(--brand-hover); }
.walkthrough-chapters .scene-next { margin-left: auto; background: var(--blue-soft); color: var(--brand-hover); border-color: var(--blue-line); font-weight: 600; }
.walkthrough-chapters .scene-next:hover { background: var(--blue-soft); }
.scene-transcript { margin: .7rem 0 .8rem; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.scene-transcript > summary { padding: .75rem 1rem; font-size: var(--type-small); }
.scene-transcript .walkthrough-transcript { margin: 1rem; }
.scene-transcript .transcript-item { background: transparent; color: var(--ink); }
@keyframes message-arrive { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
@keyframes channel-flow { to { transform: translateX(350%); } }

/* The overview stays visible; technical detail is available on demand. */
.method-section { padding-block: var(--section-space); background: var(--wash); }
.paper-figure { padding: 1.5rem; border: 1px solid var(--line); border-radius: 16px; background: var(--paper); }
.paper-figure img, .memory-figure img, .radar-figure img { display: block; width: 100%; height: auto; }
.paper-figure > a, .memory-figure > a, .radar-figure > a { display: block; }
figcaption { font-size: var(--type-caption); color: var(--muted); line-height: 1.65; margin-top: 1rem; }
figcaption span { font-weight: 500; color: var(--ink); margin-right: .4rem; }
.model-family { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2.5rem; padding-block: 2.75rem 3rem; }
.model-family article { border-top: 1px solid var(--line); padding-top: 1rem; min-width: 0; }
.model-type { color: var(--accent); font-size: var(--type-caption); }
.model-family h3 { font-size: 1.125rem; margin: .6rem 0 .8rem; overflow-wrap: anywhere; }
.model-family p { color: var(--muted); font-size: var(--type-small); line-height: 1.7; }
summary { list-style: none; cursor: pointer; }
summary::-webkit-details-marker { display: none; }
.disclosure-summary { display: flex; justify-content: space-between; align-items: center; gap: 1.25rem; min-height: 68px; color: var(--ink); font-weight: 500; transition: background-color .18s ease; }
.disclosure-copy { display: flex; flex-wrap: wrap; align-items: baseline; gap: .25rem 1.5rem; min-width: 0; overflow-wrap: anywhere; }
.disclosure-copy small { color: var(--muted); font-size: var(--type-small); font-weight: 400; }
.disclosure-action { display: inline-flex; align-items: center; justify-content: center; gap: .65rem; flex-shrink: 0; min-width: 112px; min-height: 44px; padding: .6rem .9rem; border: 1px solid #91baff; border-radius: 999px; background: var(--blue-soft); color: var(--accent); font-size: var(--type-small); font-weight: 500; line-height: 1.25; transition: background-color .18s ease, border-color .18s ease; }
.disclosure-icon { position: relative; display: block; flex-shrink: 0; width: 18px; height: 18px; }
.disclosure-icon::before, .disclosure-icon::after { content: ""; position: absolute; top: 8px; left: 1px; width: 16px; height: 2px; border-radius: 1px; background: currentColor; }
.disclosure-icon::after { transform: rotate(90deg); transition: transform .18s ease, opacity .18s ease; }
.disclosure-collapse { display: none; }
details[open] > .disclosure-summary .disclosure-expand { display: none; }
details[open] > .disclosure-summary .disclosure-collapse { display: inline; }
details[open] > .disclosure-summary .disclosure-icon::after { transform: rotate(0deg); opacity: 0; }
details[open] > .disclosure-summary { background: #f6faff; }
details[open] > .disclosure-summary .disclosure-action { background: var(--paper); border-color: var(--brand); }
.disclosure-summary:focus-visible { outline-offset: -3px; border-radius: 10px; }
.disclosure-summary:focus-visible .disclosure-action { border-color: var(--accent); background: #dcecff; }
@media (hover: hover) {
  .disclosure-summary:hover { background: #f6faff; }
  .disclosure-summary:hover .disclosure-action { border-color: var(--accent); background: #dcecff; }
}
.research-disclosure { border: 1px solid var(--line); border-radius: 12px; background: var(--paper); overflow: hidden; }
.research-disclosure > summary { padding: 1rem 1.5rem; }
.research-disclosure[open] > summary { border-bottom: 1px solid var(--line); }
.wide-section { padding: 2rem; }
.system-details { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2rem; }
.detail-number { display: block; color: var(--accent); font-size: var(--type-small); }
.system-details h3 { font-size: var(--type-lead); margin: .5rem 0 .75rem; }
.system-details p { color: var(--muted); font-size: var(--type-small); }
.harness-figure { margin-block: 2.5rem; }
.evaluation-note { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 2rem; border-top: 1px solid var(--line); padding-top: 1.5rem; }
.evaluation-note h3 { font-size: var(--type-body); }
.evaluation-note p { font-size: var(--type-small); color: var(--muted); }
.memory-section { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.8fr); align-items: center; gap: 2.5rem; margin-top: 3rem; padding-top: 3rem; border-top: 1px solid var(--line); }
.memory-copy h3 { font-size: 1.5rem; margin-bottom: 1rem; }
.memory-copy p { color: var(--muted); font-size: var(--type-small); }

/* Research evidence: the headline comparison, then three specific abilities. */
.results-section { background: var(--paper); padding-block: var(--section-space); }
.results-metrics { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.25rem; margin-top: 2.5rem; }
.results-summary { grid-column: 1 / -1; display: flex; align-items: center; gap: 2.5rem; padding: 1.75rem 0; margin-bottom: .75rem; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.results-summary > strong { color: var(--brand); font-size: clamp(3rem, 5.5vw, 4.5rem); font-weight: 500; line-height: 1.1; letter-spacing: -.055em; white-space: nowrap; }
.results-summary > p { max-width: 56ch; color: var(--muted); font-size: var(--type-body); line-height: 1.65; }
.results-summary em { font-style: normal; color: var(--ink); font-weight: 500; }
.evidence-cards { display: contents; }
.evidence-cards article { background: var(--wash); border: 1px solid var(--line); border-radius: 14px; padding: 1.7rem; min-width: 0; }
.evidence-cards strong { display: block; color: var(--brand); font-size: 3.5rem; font-weight: 500; letter-spacing: -.05em; line-height: 1.15; font-variant-numeric: lining-nums tabular-nums; }
.evidence-cards strong span { font-size: 1.5rem; margin-left: .15rem; }
.evidence-cards h3 { margin: 1.25rem 0 .6rem; font-size: var(--type-body); font-weight: 500; }
.evidence-cards p { color: var(--muted); font-size: var(--type-small); line-height: 1.65; }
.metric-context { margin: 1rem 0 2.5rem; font-size: var(--type-caption); color: var(--muted); }
.benchmark-disclosure { border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.benchmark-disclosure > summary { padding: 1rem 1.5rem; font-size: var(--type-small); }
.benchmark-disclosure > :not(summary) { margin-inline: 1.5rem; }
.benchmark-disclosure[open] > summary { margin-bottom: 1.5rem; border-bottom: 1px solid var(--line); }
.benchmark-disclosure[open] { padding-bottom: 2rem; }
.results-grid { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(0, 1fr); gap: 4rem; }
.results-grid h3 { margin-bottom: 1.25rem; }
.table-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: var(--type-small); text-align: left; }
th, td { border-bottom: 1px solid var(--line); padding: .7rem .7rem .7rem 0; }
thead th { color: var(--muted); font-size: var(--type-caption); font-weight: 500; }
tbody th { font-weight: 400; }
td { color: var(--muted); }
.score { text-align: right; padding-right: 0; }
tbody .score { color: var(--accent); font-weight: 500; font-variant-numeric: tabular-nums; }
.result-note { color: var(--muted); font-size: var(--type-caption); line-height: 1.6; margin-top: 1rem; }
.continuity-panel > p { color: var(--muted); margin-bottom: 1.8rem; }
.bar-row { margin-block: 1.5rem; }
.bar-row > div:first-child { display: flex; justify-content: space-between; gap: 1rem; font-size: var(--type-small); }
.bar-row strong { font-variant-numeric: tabular-nums; }
.bar-track { height: 6px; background: var(--blue-soft); border-radius: 3px; overflow: hidden; margin-top: .55rem; }
.bar-track span { display: block; height: 100%; background: var(--brand); }
.interruption-result { display: flex; align-items: center; gap: 1.3rem; border-top: 1px solid var(--line); margin-top: 2.1rem; padding-top: 1.2rem; }
.interruption-result > strong { font-size: 2.25rem; line-height: 1.2; }
.interruption-result p { font-size: var(--type-small); }
.interruption-result span { font-size: var(--type-caption); color: var(--muted); }
.radar-figure { padding: 1.75rem; margin: 3rem 0 2rem; border: 1px solid var(--line); border-radius: 14px; }

/* Research details, followed by the team's wider work and contact information. */
.citation-section { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); align-items: start; gap: 5rem; border-top: 1px solid var(--line); padding-block: var(--section-space); }
.citation-section h2 { font-weight: 500; }
.paper-reference { color: var(--muted); margin-top: 1.25rem; line-height: 1.7; }
.citation-date { color: var(--muted); font-size: var(--type-small); margin-top: 1rem; }
.text-link { display: inline-flex; align-items: center; gap: .75rem; color: var(--accent); font-size: var(--type-small); font-weight: 500; margin-top: 1rem; min-height: 44px; }
.citation-disclosure { border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.citation-disclosure > summary { padding: 1rem 1.25rem; font-size: var(--type-small); }
.code-heading { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: .6rem 1rem; background: var(--wash); border-top: 1px solid var(--line); }
.code-heading > span { font-size: var(--type-small); color: var(--muted); }
#copy-citation { font: inherit; font-size: var(--type-small); border: 1px solid var(--line); border-radius: 6px; background: #fff; color: var(--ink); padding: .4rem .8rem; min-height: 44px; }
#copy-citation:hover { border-color: var(--accent); color: var(--accent); }
pre { margin: 0; padding: 1.25rem; background: var(--wash); border-top: 1px solid var(--line); overflow: auto; font-size: var(--type-caption); line-height: 1.8; }
code { font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace; }
#copy-status { min-height: 1.5rem; color: var(--muted); font-size: var(--type-caption); margin-top: .5rem; }
.site-footer { display: flex; align-items: center; justify-content: space-between; gap: 1rem 2rem; padding-block: 2rem; border-top: 1px solid var(--line); color: var(--muted); font-size: var(--type-caption); }
.site-footer > a:last-child { white-space: nowrap; }

.team-work-section { padding-block: var(--section-space); border-top: 1px solid var(--line); }
.team-work-heading { margin-bottom: 2rem; }
.team-work-heading h2 { font-weight: 500; }
.team-work-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(1rem, 2vw, 1.5rem); }
.team-work-card { display: flex; flex-direction: column; min-width: 0; border: 1px solid var(--line); border-radius: 14px; overflow: hidden; background: var(--paper); }
.team-work-media { position: relative; flex: none; aspect-ratio: 16 / 9; min-height: 0; background: var(--wash); }
.team-work-play, .team-work-video { position: absolute; inset: 0; }
.team-work-play { display: flex; align-items: center; justify-content: center; width: 100%; height: 100%; text-decoration: none; }
.team-work-play img, .team-work-video { display: block; width: 100%; height: 100%; object-fit: contain; }
.team-work-play-label { position: absolute; bottom: 1rem; left: 50%; transform: translateX(-50%); display: inline-flex; align-items: center; justify-content: center; gap: .6rem; min-height: 44px; padding: .5rem 1rem; border: 1px solid var(--blue-line); border-radius: 999px; background: var(--paper); color: var(--accent); font-size: var(--type-small); font-weight: 500; white-space: nowrap; box-shadow: 0 2px 12px #172b4614; }
.team-work-play:hover .team-work-play-label { background: var(--blue-soft); border-color: var(--accent); }
.team-work-play:focus-visible { outline-offset: -5px; }
.team-work-play[hidden], .team-work-video[hidden], .team-work-error[hidden] { display: none; }
.team-work-caption { display: flex; align-items: baseline; justify-content: space-between; gap: .75rem; min-height: 5rem; padding: 1rem; }
.team-work-caption h3 { font-size: var(--type-body); font-weight: 500; line-height: 1.5; letter-spacing: 0; }
.team-work-duration { flex-shrink: 0; color: var(--muted); font-size: var(--type-small); font-variant-numeric: tabular-nums; white-space: nowrap; }
.team-work-error { padding: 0 1.25rem 1rem; color: var(--muted); font-size: var(--type-small); }
.team-work-error a { color: var(--accent); }
.team-contact { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem 2rem; margin-top: 2.5rem; padding-top: 2rem; border-top: 1px solid var(--line); }
.team-contact h3 { font-size: var(--type-title); font-weight: 500; }
.team-contact-links { display: flex; flex-wrap: wrap; gap: .5rem 1.75rem; }
.team-contact-links a { display: inline-flex; align-items: center; min-height: 44px; color: var(--accent); font-size: var(--type-body); overflow-wrap: anywhere; }

@media (max-width: 760px) {
  .team-work-grid { grid-template-columns: 1fr; gap: 1.25rem; }
  .team-work-caption { min-height: 0; }
  .team-contact { align-items: flex-start; flex-direction: column; }
  .team-contact-links { flex-direction: column; gap: .25rem; max-width: 100%; }
}

@media (max-width: 1000px) {
  .header-inner { gap: 1.5rem; }
  nav { gap: 1.1rem; }
  .demo-heading, .wide-heading, .results-grid { gap: 2.5rem; }
  .demo-content { grid-template-columns: minmax(0, 1.5fr) minmax(0, .9fr); gap: 1.5rem; padding: 1.5rem; }
  .demo-description { padding-left: 1.5rem; }
  .demo-panel-top { padding-inline: 1.5rem; }
  .demo-tab-copy { padding: 1rem; }
  .demo-tab-meta { flex-wrap: wrap; gap: .15rem .5rem; }
  .demo-tab-copy > strong { font-size: 1.15rem; }
  .cover-quote { font-size: .95rem; }
  .model-family { gap: 1.5rem; }
  .evidence-cards article { padding: 1.3rem; }
  .citation-section { gap: 3rem; }
}
@media (max-width: 760px) {
  .wrap { width: calc(100% - 2.5rem); }
  html { scroll-padding-top: 8rem; }
  .header-inner { flex-wrap: wrap; justify-content: center; gap: .3rem; padding-block: .85rem .35rem; }
  .wordmark { font-size: 1.2rem; }
  .brand-logo { width: 2.5rem; height: 2.5rem; }
  nav { justify-content: center; width: 100%; gap: 1rem; }
  nav a { font-size: var(--type-small); min-height: 40px; }
  .launch-hero { padding-block: 3rem 2.5rem; }
  .launch-hero h1 { margin-block: 1.25rem 1.5rem; }
  .launch-description { font-size: var(--type-body); max-width: 48ch; }
  .links { gap: .65rem; }
  .button { min-height: 48px; padding: .65rem 1.15rem; }
  .launch-authors { flex-direction: column; align-items: center; gap: .15rem; }
  .launch-authors .affiliation-separator { display: none; }
  .demo-heading, .wide-heading { grid-template-columns: 1fr; gap: 1.2rem; margin-bottom: 2rem; }
  .demo-picker { grid-template-columns: 1fr; gap: .8rem; }
  .demo-tab { display: grid; grid-template-columns: 112px minmax(0, 1fr); border-radius: 12px; }
  .demo-cover { height: 100%; min-height: 162px; }
  .quote-cover { padding: .8rem; }
  .quote-cover > .cover-label { font-size: var(--type-caption); }
  .cover-quote { display: none; }
  .cover-mini { display: block; font-size: 1.2rem; font-weight: 500; line-height: 1.3; color: var(--accent); margin-top: 1rem; }
  .cover-play { width: 26px; height: 26px; right: .5rem; bottom: .5rem; }
  .quote-cover .cover-play { display: none; }
  .demo-cover:not(.quote-cover) .cover-label { display: none; }
  .demo-tab-copy { padding: 1rem; }
  .demo-tab-copy > strong { font-size: 1.2rem; }
  .demo-tab-meta { margin-bottom: .4rem; }
  .demo-tab-description { min-height: 0; font-size: var(--type-small); }
  .demo-tab-action { margin-top: .65rem; }
  .demo-content { grid-template-columns: 1fr; gap: 1.5rem; padding: 1.25rem; }
  .demo-panel-top { padding-inline: 1.25rem; }
  .demo-description { grid-row: 1; border-left: 0; border-bottom: 1px solid var(--line); padding: 0 0 1.5rem; }
  .demo-description h3 { font-size: 1.625rem; }
  .demo-takeaway { margin-top: 1rem; padding-top: 1rem; }
  .scene-phase { min-height: 120px; }
  .scene-conversation { height: 350px; padding: 1rem; }
  .scene-channel { padding: .65rem .5rem; }
  .channel-description { display: none; }
  .scene-chat .transcript-item { width: 95%; }
  .playback-speed { margin-left: auto; }
  .playback-time { margin-right: 0; }
  .paper-figure { padding: .75rem; }
  .model-family { grid-template-columns: 1fr; gap: 1.5rem; padding-block: 2rem; }
  .model-family h3 { font-size: var(--type-title); }
  .research-disclosure > summary, .benchmark-disclosure > summary { padding: 1rem 1.25rem; }
  .benchmark-disclosure > :not(summary) { margin-inline: 1.25rem; }
  .wide-section { padding: 1.25rem; }
  .system-details, .evaluation-note, .memory-section { grid-template-columns: 1fr; gap: 1.5rem; }
  .memory-section { margin-top: 2rem; padding-top: 2rem; }
  .results-metrics { grid-template-columns: 1fr; gap: .8rem; }
  .results-summary { gap: 1.5rem; align-items: flex-start; }
  .results-summary > p { font-size: var(--type-small); }
  .evidence-cards article { padding: 1.5rem; }
  .evidence-cards strong { font-size: 3rem; }
  .evidence-cards h3 { margin-top: .75rem; }
  .results-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .radar-figure { padding: .75rem; }
  .citation-section { grid-template-columns: 1fr; gap: 2rem; }
  .site-footer { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 600px) {
  .disclosure-summary { gap: .75rem; }
  .disclosure-action { width: 44px; min-width: 44px; padding: .6rem; }
  .disclosure-action > .disclosure-expand, .disclosure-action > .disclosure-collapse { display: none !important; }
}
@media (max-width: 380px) {
  .wrap { width: calc(100% - 2rem); }
  nav { gap: .8rem; }
  nav a { font-size: .8125rem; }
  .launch-hero h1 { font-size: 2.75rem; }
  .links { flex-direction: column; }
  .demo-tab { grid-template-columns: 88px minmax(0, 1fr); }
  .cover-quote { font-size: .8125rem; }
  .demo-tab-copy { padding: .8rem; }
  .results-summary { flex-direction: column; gap: 1rem; }
  .playback-bar { gap: .65rem; }
  .playback-speed { margin-left: 0; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button, .demo-tab, .transcript-item, .disclosure-summary, .disclosure-action, .disclosure-icon::after { transition: none; }
  .scene-chat .transcript-item, .scene-channel .channel-meter > span::after { animation: none; }
}

.recorded-audio { display: none; }
.scene-waveform { position: relative; overflow: hidden; border-radius: 10px; background: var(--wash); }
.scene-waveform img { display: block; width: 100%; height: auto; }
.scene-audio .scene-conversation { height: 360px; }
/* Compact demo workspace: media left, synchronized output right. */
.demo-heading { grid-template-columns: 1.2fr 1fr; gap: 2rem; margin-bottom: 1.1rem; }
.demo-heading .section-number { margin-bottom: .4rem; }
.demo-heading h2 { font-size: clamp(1.5rem, 2.4vw, 2rem); }
.demo-heading > p { font-size: var(--type-small); line-height: 1.5; }
.demo-picker { gap: .75rem; margin-bottom: 1rem; }
.demo-tab { display: grid; grid-template-columns: 76px minmax(0, 1fr); align-items: center; border-radius: 12px; }
.demo-cover { height: 100%; min-height: 86px; }
.demo-cover > .cover-label, .cover-quote, .cover-play, .demo-tab-description, .demo-tab-action { display: none; }
.quote-cover { display: flex; align-items: center; padding: .6rem; }
.cover-mini { display: block; margin: 0; color: var(--accent); font-size: var(--type-small); font-weight: 500; line-height: 1.4; }
.demo-tab-copy { padding: .65rem .85rem; }
.demo-tab-meta { flex-wrap: wrap; gap: .1rem .5rem; margin-bottom: .3rem; }
.demo-tab-copy > strong { font-size: 1rem; line-height: 1.35; }
.demo-panel-top { padding: .5rem 1.25rem; }
.demo-panel-heading { display: flex; align-items: center; justify-content: space-between; gap: .6rem 1.25rem; padding: .8rem 1.25rem; }
.demo-panel-heading h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); line-height: 1.3; }
.demo-panel-heading .scene-spotlight { width: auto; max-width: 48%; flex-shrink: 0; margin: 0; min-height: 36px; padding: .4rem .7rem; font-size: var(--type-caption); }
.demo-content { display: block; padding: 0 1.25rem 1rem; }
.demo-description { border: 0; border-top: 1px solid var(--line); padding: 0 1.25rem; }
.demo-description > summary { min-height: 44px; padding: .4rem 0; font-size: var(--type-small); }
.demo-description-body { padding: .35rem 0 1rem; max-width: 90ch; }
.demo-description-body .section-number { margin-bottom: .35rem; }
.demo-description-body > p { color: var(--muted); font-size: var(--type-body); line-height: 1.6; }
.demo-description-body > a { display: inline-block; margin-top: .5rem; color: var(--accent); font-size: var(--type-small); }
.demo-takeaway { margin-top: .75rem; padding-top: .75rem; }
.scene-stage { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 1.25rem; align-items: stretch; overflow: visible; }
.scene-main { min-width: 0; }
.scene-main .scene-film { padding-bottom: 0; }
.scene-main .recorded-demo { max-height: clamp(190px, calc(100svh - 500px), 350px); object-fit: contain; }
.scene-main .playback-bar { padding: .65rem 0 .4rem; gap: .35rem .65rem; }
.scene-main .walkthrough-play { min-width: 135px; min-height: 42px; }
.scene-main .timeline-slider { height: 24px; }
.scene-main .walkthrough-chapters { gap: .4rem; padding-bottom: .2rem; }
.scene-main .walkthrough-chapters button { min-height: 34px; padding: .3rem .5rem; gap: .4rem; }
.scene-main .media-tools { margin: .3rem 0 0; gap: .4rem; }
.scene-dialogue-panel { display: flex; flex-direction: column; min-width: 0; min-height: 0; }
.scene-dialogue-panel .scene-topline { padding-bottom: .3rem; }
.scene-dialogue-panel .scene-phase { padding: .35rem 0 .6rem; min-height: 82px; }
.scene-dialogue-panel .scene-phase h4 { font-size: 1.15rem; line-height: 1.35; }
.scene-dialogue-panel .scene-phase > p { margin-top: .3rem; line-height: 1.5; }
.scene-dialogue-panel .scene-channels { padding-bottom: .65rem; }
.scene-dialogue-panel .scene-channel { padding: .5rem .6rem; }
.scene-dialogue-panel .channel-description { display: none; }
.scene-dialogue-panel .channel-meter { margin-top: .4rem; }
.scene-stage .scene-dialogue-panel .scene-conversation { height: 0; min-height: 180px; flex: 1 1 0; overflow-y: auto; padding: .85rem; }
.scene-stage .scene-dialogue-panel .scene-opening { min-height: 100%; max-width: none; margin: 0; gap: .55rem; }
.scene-stage .scene-dialogue-panel .scene-opening > p { font-size: var(--type-body); }
.scene-dialogue-panel .scene-chat .transcript-item { width: 100%; padding: .65rem .8rem; }
.scene-dialogue-panel .scene-chat .transcript-item p { font-size: 1rem; line-height: 1.55; }
.scene-dialogue-panel .scene-transcript { margin: .65rem 0 0; flex-shrink: 0; }
.scene-dialogue-panel .scene-transcript > summary { min-height: 44px; padding: .5rem .8rem; }
.scene-transcript .playback-note { margin: 0 1rem 1rem; }
@media (max-width: 1100px) {
  .demo-tab { grid-template-columns: 58px minmax(0, 1fr); }
  .demo-tab-copy { padding: .55rem .65rem; }
  .demo-tab-copy > strong { font-size: .9375rem; }
  .demo-tab-meta { font-size: var(--type-caption); }
}
@media (max-width: 760px) {
  .scene-stage { grid-template-columns: 1fr; gap: 1.25rem; }
  .scene-main .recorded-demo { max-height: none; }
  .scene-stage .scene-dialogue-panel .scene-conversation { height: 300px; min-height: 180px; flex: none; }
  .scene-dialogue-panel .scene-phase { min-height: 0; }
  .scene-main .playback-speed { margin-left: auto; }
  .scene-main .playback-time { margin-right: 0; }
  .demo-content { padding: 0 1rem 1rem; }
  .demo-panel-heading, .demo-panel-top { padding-inline: 1rem; }
  .demo-description { padding-inline: 1rem; }
}
@media (max-width: 600px) {
  .demo-heading { grid-template-columns: 1fr; gap: .5rem; margin-bottom: 1rem; }
  .demo-picker { grid-template-columns: 1fr; gap: .5rem; }
  .demo-tab { grid-template-columns: 58px minmax(0, 1fr); }
  .demo-cover { min-height: 60px; }
  .demo-tab-copy { padding: .5rem .75rem; }
  .demo-tab-meta { flex-wrap: nowrap; margin-bottom: .15rem; }
  .demo-tab-copy > strong { font-size: 1rem; }
  .demo-panel-heading { align-items: flex-start; flex-direction: column; padding-block: .65rem; }
  .demo-panel-heading .scene-spotlight { max-width: 100%; }
}

/* Loading feedback stays within the existing playback status. */
.demo-panel[data-loading="true"] .scene-status::before { width: 10px; height: 10px; border: 2px solid var(--blue-line); border-top-color: var(--accent); border-radius: 50%; background: transparent; box-shadow: none; animation: media-loading .8s linear infinite; }
@keyframes media-loading { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) {
  .demo-panel[data-loading="true"] .scene-status::before { animation: none; }
}