@charset "UTF-8";
:root {
  color-scheme: light;
  font: 100%/1.5 -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
  --ink: #1d1d1f; --secondary: #6e6e73; --accent: #0071e3;
  --ease-out: cubic-bezier(.23, 1, .32, 1);
  --glass: rgba(250, 250, 252, .84);
  --edge: inset 0 0 0 1px rgba(0, 0, 0, .045);
  --float-shadow: 0 8px 30px rgba(0, 0, 0, .065), 0 1px 3px rgba(0, 0, 0, .035), inset 0 1px 0 rgba(255, 255, 255, .8);
}
* { box-sizing: border-box; }
body { margin: 0; background: #fff; color: var(--ink); -webkit-font-smoothing: antialiased; }
main { max-width: 1336px; padding: 0 48px 64px; margin: auto; }
/* A quiet, full-width title band and a typographic blue wordmark. */
.paper-heading { text-align: center; padding: 58px 24px 42px; margin-bottom: 32px; background: radial-gradient(ellipse at 50% 0%, #e2edf8 0%, transparent 68%), linear-gradient(115deg, #f1f5f8, #f7f9fc 54%, #edf3f8); border-bottom: 1px solid #d9e4ee; }
h1 { margin: 0; font-optical-sizing: auto; }
.project-name { display: inline-block; padding: 0 .06em .07em; margin-bottom: 17px; font-size: clamp(3.7rem, 6.8vw, 6rem); line-height: 1.08; letter-spacing: -.055em; color: #3977b0; }
.wordmark-lettering { position: relative; z-index: 2; display: inline-block; padding-right: .12em; margin-right: -.12em; background: linear-gradient(110deg, #35699c 5%, #659aca 45%, #4c83b8 70%, #41679c); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.wordmark-world { font-family: Georgia, "Times New Roman", serif; font-style: normal; font-weight: 500; letter-spacing: -.065em; }
.wordmark-two { font-family: Georgia, "Times New Roman", serif; font-style: normal; font-weight: 400; font-size: .79em; padding-inline: .025em .055em; }
.wordmark-hosi { font-family: Georgia, "Times New Roman", serif; font-style: normal; font-weight: 500; letter-spacing: -.055em; }
.wordmark-avatar { position: relative; z-index: 1; display: inline-block; width: .42em; height: .7em; vertical-align: baseline; }
.wordmark-avatar img { position: absolute; height: .97em; width: auto; max-width: none; bottom: .005em; left: -.215em; user-select: none; pointer-events: none; }
.paper-title { font-family: Georgia, "Times New Roman", serif; font-style: italic; display: block; max-width: 850px; margin: auto; font-size: clamp(1.25rem, 2vw, 1.65rem); line-height: 1.5; letter-spacing: -.018em; font-weight: 400; color: #4e6175; text-wrap: balance; }
.paper-authors { display: flex; flex-wrap: wrap; justify-content: center; gap: 5px 18px; max-width: 1100px; margin: 24px auto 12px; color: #375d81; font-size: 1.0625rem; line-height: 1.65; }
.paper-authors > span { white-space: nowrap; }
.paper-authors sup, .paper-affiliations sup { font-size: .7em; line-height: 0; margin-left: 2px; }
.paper-affiliations { color: #526d85; font-size: .8125rem; line-height: 1.8; }
.paper-affiliations sup { margin: 0 4px 0 0; }
.paper-affiliations span { color: #728396; white-space: nowrap; }
.corresponding-author { margin: 8px 0 0; color: #728396; font-size: .75rem; }
.paper-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 22px; }
.paper-link { display: inline-flex; align-items: center; justify-content: center; gap: 9px; min-height: 44px; padding: 10px 22px; border: 1px solid #cbd9e6; border-radius: 999px; background: #ffffffb8; box-shadow: inset 0 1px 0 #fff, 0 2px 4px #344e6806; color: #375d81; font-size: .9375rem; line-height: 1.4; text-decoration: none; -webkit-tap-highlight-color: transparent; transition: transform 220ms var(--ease-out), background 180ms ease, box-shadow 220ms ease, border-color 180ms ease; }
.paper-link svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.paper-link .github-logomark { fill: currentColor; stroke: none; }
@media (hover: hover) { .paper-link:hover { transform: translateY(-2px); background: #fff; border-color: #adc6df; box-shadow: inset 0 1px 0 #fff, 0 5px 16px #315c8714; } }
.paper-link:active { transform: scale(.96); transition-duration: 90ms; background: #e5eff9; }
/* Official small arXiv mark: https://info.arxiv.org/brand/logos.html */
.paper-link .arxiv-logomark { display: block; width: 18px; height: 20px; object-fit: contain; }
.paper-link:focus-visible { outline: 2px solid #397dbb; outline-offset: 4px; }
.site-footer { border-top: 1px solid #ffffff20; background: linear-gradient(110deg, #20364d, #466079 65%, #73889b); color: #f4f7fb; padding: 10px 48px; }
.site-footer p { max-width: 1240px; margin: auto; font-size: .75rem; line-height: 1.5; letter-spacing: .005em; white-space: nowrap; overflow-x: auto; scrollbar-width: none; }
.site-footer strong { font-weight: 600; }
@media (prefers-reduced-motion: reduce) { .paper-link { transition: none; } .paper-link:hover, .paper-link:active { transform: none; } }
@media (forced-colors: active) { .wordmark-lettering { background: none; -webkit-text-fill-color: CanvasText; } }
.abstract-heading h2, .method-heading h2, .video-showcase > h2, .comparisons > h2 { color: #3977b0; font-family: inherit; font-style: normal; }
.teaser { width: 100%; }
.comparisons { max-width: 1112px; margin: 88px auto 16px; }
.comparisons > h2 { margin: 0 8px 28px; font-size: 2.1875rem; font-weight: 600; letter-spacing: -.045em; line-height: 1.2; }
.comparison-row { margin: 0 0 48px; padding: 0; border: 0; border-radius: 0; background: transparent; box-shadow: none; }
.comparison-scroll { overflow-x: auto; overscroll-behavior-x: contain; scrollbar-width: thin; scrollbar-color: #bbc5d2 transparent; }
.comparison-scroll:focus-visible { outline: 2px solid #0071e3a0; outline-offset: -2px; border-radius: 12px; }
.comparison-strip { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.comparison-method { min-width: 0; }
.comparison-label { padding: 12px 0 0; text-align: center; font-size: .9375rem; font-weight: 550; color: #495360; }
.comparison-label small { font-size: inherit; font-weight: 400; color: #727b87; }
.comparison-visual { position: relative; overflow: hidden; border-radius: 0; user-select: none; -webkit-user-select: none; }
.comparison-visual img { display: block; width: 100%; height: auto; pointer-events: none; user-select: none; -webkit-user-select: none; -webkit-user-drag: none; }
.comparison-row figcaption { padding: 12px 0 0; color: #62626a; font-size: .9375rem; line-height: 1.7; text-align: center; }
@media (max-width: 700px) {
  .comparisons { margin-top: 56px; }
  .comparisons > h2 { margin: 0 4px 20px; font-size: 1.875rem; }
  .comparison-row { margin-bottom: 36px; }
  .comparison-strip { min-width: 840px; }
  .comparison-row figcaption { padding: 12px 0 0; text-align: center; }
}
.video-showcase { margin-top: 88px; }
.video-showcase > h2 { margin: 0 8px 36px; font-size: 2.1875rem; font-weight: 600; letter-spacing: -.045em; line-height: 1.2; }
.video-group + .video-group { margin-top: 64px; }
.video-group > h3 { margin: 0 8px 22px; font-size: 1.375rem; font-weight: 550; letter-spacing: -.025em; line-height: 1.3; color: #6a87a1; }
.video-grid { display: grid; gap: 24px; align-items: stretch; }
.video-grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.video-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.video-grid.physics { max-width: 960px; margin-inline: auto; }
.video-card { min-width: 0; margin: 0; border-radius: 0; border: 0; background: transparent; box-shadow: none; }
.video-player { position: relative; }
.video-player video { display: block; border-radius: 0; width: 100%; aspect-ratio: 3 / 2; object-fit: contain; background: #f5f5f7; }
.wide .video-player video { aspect-ratio: 2 / 1; border-radius: 20px; }
.physics .video-player video { aspect-ratio: 4 / 3; }
.video-controls { display: flex; align-items: center; gap: 9px; width: calc(100% - 24px); max-width: 480px; height: 36px; margin: 10px auto 0; padding: 2px 0; background: transparent; border: 0; box-shadow: none; }
.video-controls[hidden], .video-error[hidden] { display: none; }
.video-controls button { position: relative; flex-shrink: 0; display: grid; place-items: center; width: 28px; height: 28px; padding: 0; border: 1px solid #ffffffd9; border-radius: 50%; color: #44556a; background: #ffffff80; box-shadow: inset 0 1px 1px #fff, inset 0 -1px 2px #74839926, 0 2px 5px #24354e12; }
.video-controls button:hover { background: #ffffff26; box-shadow: inset 0 1px 1px #fff, inset 0 -1px 2px #74839952, 0 3px 8px #24354e26; }
.video-controls button:active { transform: scale(.92); }
.video-controls svg { width: 15px; height: 15px; }
.video-toggle svg { position: absolute; fill: currentColor; stroke: none; transition: opacity 180ms ease, transform 220ms var(--ease-out); }
.video-toggle .video-pause-symbol { opacity: 0; transform: scale(.7); }
.video-player.is-playing .video-play-symbol { opacity: 0; transform: scale(.7); }
.video-player.is-playing .video-pause-symbol { opacity: 1; transform: scale(1); }
.video-timeline { position: relative; flex: 1; min-width: 28px; height: 28px; }
.video-seek { position: relative; z-index: 1; display: block; width: 100%; height: 28px; margin: 0; padding: 0; appearance: none; -webkit-appearance: none; border: 0; background: transparent; cursor: pointer; touch-action: none; }
.video-seek::-webkit-slider-runnable-track { height: 5px; background: transparent; }
.video-seek::-webkit-slider-thumb { appearance: none; -webkit-appearance: none; width: 18px; height: 18px; margin-top: -6.5px; border: 0; background: transparent; box-shadow: none; }
.video-seek::-moz-range-track, .video-seek::-moz-range-progress { height: 5px; background: transparent; }
.video-seek::-moz-range-thumb { width: 18px; height: 18px; border: 0; background: transparent; box-shadow: none; }
.video-timeline.is-dragging .timeline-thumb { width: 38px; height: 24px; box-shadow: inset 0 1px 1px #fff, inset 0 -1px 2px #74839952, 0 3px 8px #24354e29; }
.video-timeline.is-dragging .timeline-thumb::before { opacity: 0; }
.video-controls .video-toggle { isolation: isolate; background: transparent; box-shadow: inset 0 1px 1px #ffffff57, 0 3px 8px #1723382e; }
.video-controls .video-toggle svg { position: absolute; z-index: 1; }
.video-controls .video-toggle:hover, .video-controls .video-toggle:active { background: transparent; }
@media (hover: hover) and (pointer: fine) {
  .video-timeline:hover .timeline-thumb { width: 34px; height: 22px; }
  .video-timeline:hover .timeline-thumb::before { opacity: 0; }
  .video-timeline.is-dragging .timeline-thumb { width: 38px; height: 24px; }
}
.video-time { flex-shrink: 0; font-size: .625rem; font-variant-numeric: tabular-nums; color: #626b78; white-space: nowrap; }
.video-card figcaption { padding: 12px 0 0; text-align: center; }
.video-card figcaption p { margin: 0; color: #62626a; font-size: .9375rem; line-height: 1.7; }
.video-error { margin: 0; padding: 10px 18px; font-size: .8125rem; color: #62626a; }
.video-error a { color: #28659e; }
.video-player:fullscreen { width: 100%; height: 100%; display: flex; flex-direction: column; background: #121416; }
.video-player:fullscreen video { border-radius: 0; flex: 1; min-height: 0; height: calc(100% - 60px); aspect-ratio: auto; object-fit: contain; background: #121416; }
.video-player:fullscreen .video-controls { flex-shrink: 0; width: 100%; max-width: none; height: 60px; margin: 0; padding-inline: max(20px, calc((100vw - 1000px) / 2)); background: #f5f7fa; }
@media (max-width: 1000px) and (min-width: 701px) {
  .video-grid { gap: 14px; }
  .video-controls { gap: 5px; width: calc(100% - 12px); }
  .three .video-time { display: none; }
  .video-card figcaption { padding-top: 12px; }
}
@media (max-width: 700px) {
  .video-showcase { margin-top: 56px; }
  .video-showcase > h2 { margin: 0 4px 28px; font-size: 1.875rem; }
  .wide .video-player video { border-radius: 16px; }
  .video-group + .video-group { margin-top: 44px; }
  .video-group > h3 { margin: 0 4px 18px; font-size: 1.1875rem; }
  .video-grid.three, .video-grid.two { grid-template-columns: minmax(0, 1fr); }
  .video-card { border-radius: 0; }
  .video-card figcaption { padding: 10px 0 0; }
}
@media (prefers-reduced-motion: reduce) {
  .video-toggle svg { transition: none; }
  .video-controls button:active { transform: none; }
}
.method-overview { margin: 88px auto 16px; }
.method-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 24px; margin: 0 8px 28px; }
.method-heading h2 { margin: 0; font-size: 2.1875rem; line-height: 1.2; font-weight: 600; letter-spacing: -.045em; }
.method-heading > span { color: var(--secondary); font-size: .9375rem; }
.pipeline-figure { margin: 0; padding: 22px 20px 60px; border-radius: 28px; background: #fff; border: 1px solid #eceef2; box-shadow: 0 16px 48px -30px #33466624; }
.pipeline-open { position: relative; display: block; color: #394352; border-radius: 12px; cursor: zoom-in; text-decoration: none; }
.pipeline-open img { display: block; width: 100%; height: auto; }
.pipeline-open:focus-visible { outline: 3px solid #0071e3a0; outline-offset: 8px; }
.pipeline-enlarge { position: absolute; right: 0; bottom: -43px; display: flex; align-items: center; gap: 8px; padding: 8px 12px; font-size: .75rem; border-radius: 20px; background: #f5f7fabd; border: 1px solid #fff; box-shadow: var(--float-shadow); transition: transform 200ms var(--ease-out), background 200ms ease; }
.pipeline-enlarge svg { width: 14px; height: 14px; }
.pipeline-open:hover .pipeline-enlarge { transform: translateY(-2px); background: #edf3f9; }
.pipeline-open:active .pipeline-enlarge { transform: scale(.96); }
.pipeline-dialog { width: min(1600px, calc(100vw - 48px)); max-width: none; max-height: calc(100dvh - 48px); padding: 0; border: 1px solid #fff; border-radius: 24px; background: #f9fafc; color: var(--ink); box-shadow: 0 24px 100px #11182740; }
.pipeline-dialog::backdrop { background: #202b3c66; backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
.pipeline-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 20px; }
.pipeline-toolbar h2 { margin: 0; font-size: 1rem; font-weight: 550; letter-spacing: -.02em; }
.pipeline-toolbar > div { display: flex; gap: 8px; }
.pipeline-toolbar button { display: grid; place-items: center; height: 36px; padding: 0 14px; border: 1px solid #fff; border-radius: 20px; background: #ffffffa6; box-shadow: var(--float-shadow); font-size: .8125rem; }
#pipeline-close { width: 36px; padding: 0; }
.pipeline-scroll { position: relative; height: min(70dvh, 700px); max-height: calc(100dvh - 120px); overflow: hidden; overscroll-behavior: contain; background: #fff; touch-action: none; cursor: grab; user-select: none; }
.pipeline-scroll.is-dragging { cursor: grabbing; }
html.pipeline-modal-open { overflow: hidden; }
.pipeline-scroll img { position: absolute; left: 0; top: 0; display: block; width: 100%; height: auto; max-width: none; transform-origin: 0 0; pointer-events: none; will-change: transform; }

@media (max-width: 700px) {
  .method-overview { margin-top: 56px; }
  .method-heading { display: block; margin: 0 4px 20px; }
  .method-heading h2 { font-size: 1.875rem; margin-bottom: 10px; }
  .method-heading > span { font-size: .875rem; }
  .pipeline-figure { padding: 12px 8px 56px; border-radius: 20px; }
  .pipeline-dialog { width: calc(100vw - 16px); max-height: calc(100dvh - 24px); border-radius: 20px; }
  .pipeline-toolbar { padding: 12px; gap: 8px; }
  .pipeline-toolbar h2 { font-size: .875rem; }
  .pipeline-toolbar button { font-size: .75rem; padding: 0 10px; }
  .pipeline-scroll { height: 65dvh; max-height: calc(100dvh - 92px); }
}
@media (prefers-reduced-motion: reduce) {
  .pipeline-enlarge { transition: none; }
  .pipeline-open:hover .pipeline-enlarge, .pipeline-open:active .pipeline-enlarge { transform: none; }
}
.abstract { position: relative; isolation: isolate; display: grid; grid-template-columns: 160px minmax(0, 1fr); gap: 48px; max-width: 1112px; margin: 80px auto 16px; padding: 52px 56px; border: 1px solid #eef0f4; border-radius: 32px; background: linear-gradient(130deg, #f8fafdfa, #fffffff2 55%, #faf8fcf5); box-shadow: inset 0 1px 0 #fff, 0 16px 48px -30px #33466624; }
.abstract::before { content: ''; position: absolute; z-index: -1; inset: 0; border-radius: inherit; pointer-events: none; background: radial-gradient(ellipse at 0 0, #3175b410, transparent 42%), radial-gradient(ellipse at 100% 100%, #bb42850a, transparent 40%); }
.abstract-heading h2 { margin: 0; font-size: 2.1875rem; font-weight: 600; letter-spacing: -.045em; line-height: 1.15; }
.abstract-copy { min-width: 0; color: #48484e; font-size: 1.0625rem; line-height: 1.85; letter-spacing: -.012em; }
.abstract-copy p { margin: 0 0 1.15em; }
.abstract-copy p:last-child { margin-bottom: 0; }
.abstract-copy strong { color: #222832; font-weight: 600; }
.abstract-copy ::selection { background: #dce9f8; color: #1d1d1f; }
@media (max-width: 1000px) {
  .abstract { grid-template-columns: 125px minmax(0, 1fr); gap: 28px; padding: 40px 32px; }
}
@media (max-width: 700px) {
  .abstract { grid-template-columns: minmax(0, 1fr); gap: 28px; margin-top: 52px; padding: 30px 24px; border-radius: 24px; }
  .abstract-heading { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
  .abstract-heading h2 { order: -1; margin: 0; font-size: 1.875rem; }
  .abstract-copy { font-size: 1rem; line-height: 1.8; }
}
@media (prefers-contrast: more) {
  .abstract { background: #fff; border-color: #727277; box-shadow: none; }
  .abstract::before { display: none; }
  .abstract-copy { color: #242427; }
}
.viewer-shell { height: clamp(510px, 53vw, 710px); position: relative; overflow: hidden; border-radius: 28px; background: #fafafa; box-shadow: var(--edge), 0 12px 50px -30px #17172020; isolation: isolate; }
#viewport { position: absolute; inset: 0; }
#viewport canvas { width: 100%; height: 100%; display: block; touch-action: none; }
.viewer-topbar { position: absolute; inset: 20px 22px auto; display: flex; align-items: center; justify-content: flex-end; pointer-events: none; z-index: 3; }
.live-badge { display: flex; align-items: center; gap: 8px; padding: 10px 14px; font-size: .75rem; letter-spacing: .01em; font-weight: 500; color: #56565c; }
.live-badge > span { width: 6px; height: 6px; background: #8c97a2; border-radius: 50%; }
.view-tools { display: flex; align-items: center; gap: 2px; padding: 3px; border-radius: 25px; pointer-events: auto; background: var(--glass); backdrop-filter: blur(18px) saturate(160%); -webkit-backdrop-filter: blur(18px) saturate(160%); box-shadow: var(--float-shadow); }
button, select, input { font: inherit; -webkit-tap-highlight-color: transparent; }
button, select { color: inherit; }
button { cursor: pointer; touch-action: manipulation; transition: transform 240ms cubic-bezier(.22,1,.36,1), box-shadow 200ms ease, background-color 160ms ease, color 160ms ease; user-select: none; -webkit-user-select: none; }
button:active:not(:disabled) { transform: scale(.93); transition-duration: 80ms; }
button:disabled { cursor: wait; opacity: .42; }
.teaser .playback button, .teaser .actions button { transition: transform 240ms var(--ease-out), box-shadow 200ms ease, background-color 160ms ease, color 160ms ease, opacity 240ms ease; }
.teaser .playback button:disabled, .teaser .actions button:disabled { opacity: .72; }
.teaser:not(.is-ready) .playback, .teaser:not(.is-ready) .actions { pointer-events: none; }
button:focus-visible, select:focus-visible, input:focus-visible { outline: 3px solid #0071e3a0; outline-offset: 4px; }
svg { width: 19px; height: 19px; fill: none; stroke: currentColor; stroke-width: 1.65; stroke-linecap: round; stroke-linejoin: round; }
.view-tools button { display: flex; align-items: center; justify-content: center; gap: 7px; border: 0; border-radius: 22px; background: transparent; height: 38px; min-width: 40px; padding: 0 13px; font-size: .75rem; font-weight: 500; }
.view-tools button:last-child { padding: 0; }
.viewer-hint { position: absolute; bottom: 110px; left: 50%; transform: translateX(-50%); white-space: nowrap; font-size: .6875rem; color: #6e6e73; pointer-events: none; padding: 5px 12px; border-radius: 20px; background: #ffffffb3; }
.viewer-hint span { margin: 0 7px; color: #a9a9ae; }
.playback { position: absolute; z-index: 4; left: 50%; bottom: 26px; transform: translateX(-50%); display: flex; align-items: center; gap: 18px; width: min(720px, calc(100% - 64px)); min-height: 66px; padding: 11px 16px; border-radius: 34px; background: var(--glass); backdrop-filter: blur(18px) saturate(160%); -webkit-backdrop-filter: blur(18px) saturate(160%); box-shadow: var(--float-shadow); }
.transport { display: flex; gap: 6px; align-items: center; flex-shrink: 0; }
.play-button { display: grid; place-items: center; border: 0; width: 42px; height: 42px; border-radius: 50%; background: transparent; color: #344052; box-shadow: 0 2px 4px #00000012; }
.play-button svg { width: 19px; height: 19px; fill: currentColor; stroke-width: 0; }
.play-button svg { pointer-events: none; }
.icon-button { display: grid; place-items: center; border: 0; background: transparent; color: #6e6e73; width: 34px; height: 38px; padding: 7px; border-radius: 18px; }
.icon-button[aria-pressed="true"] { color: var(--ink); background: #00000007; }
.time-label { font-size: .6875rem; letter-spacing: .01em; color: #85858b; font-variant-numeric: tabular-nums; white-space: nowrap; min-width: 98px; margin-left: 3px; }
.time-separator { margin: 0 6px; color: #b2b2b7; }
#current-time { color: #424247; }
.timeline-control { position: relative; flex: 1; min-width: 70px; height: 28px; }
#timeline { position: relative; z-index: 1; display: block; width: 100%; appearance: none; -webkit-appearance: none; height: 28px; margin: 0; border: 0; border-radius: 8px; background: transparent; cursor: pointer; touch-action: none; }
#timeline::-webkit-slider-runnable-track { height: 5px; background: transparent; }
#timeline::-webkit-slider-thumb { appearance: none; -webkit-appearance: none; height: 18px; width: 18px; margin-top: -6.5px; border: 0; background: transparent; box-shadow: none; }
#timeline::-moz-range-track, #timeline::-moz-range-progress { height: 5px; background: transparent; }
.timeline-rail { position: absolute; pointer-events: none; top: 50%; left: 9px; right: 9px; height: 5px; transform: translateY(-50%); border-radius: 999px; background: #4e5c702b; box-shadow: inset 0 1px 2px #0000001a, 0 1px 0 #ffffffa6; }
.timeline-fill { display: block; width: calc(100% * var(--fraction, 0)); height: 100%; border-radius: 999px; background: #2378ef; }
#timeline::-moz-range-thumb { height: 18px; width: 18px; border: 0; background: transparent; box-shadow: none; }
.timeline-thumb { position: absolute; z-index: 2; pointer-events: none; left: calc(9px + (100% - 18px) * var(--fraction, 0)); top: 50%; transform: translate(-50%, -50%); width: 18px; height: 18px; border-radius: 999px; background: transparent; border: 1px solid #ffffffd9; box-shadow: inset 0 1px 1px #fff, inset 0 -1px 1px #6f7b8c40, 0 2px 5px #24354e36; transition: width 260ms cubic-bezier(.22,1,.36,1), height 260ms cubic-bezier(.22,1,.36,1), box-shadow 240ms ease; }
.timeline-thumb::before { content: ''; position: absolute; inset: 0; border-radius: inherit; background: linear-gradient(145deg, #fff, #eaf0f5); opacity: 1; transition: opacity 240ms ease; }
.timeline-control.is-dragging .timeline-thumb { width: 38px; height: 24px; box-shadow: inset 0 1px 1px #fff, inset 0 -1px 2px #74839952, 0 3px 8px #24354e29; }
.timeline-control.is-dragging .timeline-thumb::before { opacity: 0; }
.play-options { display: flex; align-items: center; gap: 6px; }
.reset-rotor { transform-box: view-box; transform-origin: 12px 12px; }
#loop { position: relative; isolation: isolate; color: #747d89; background: transparent; box-shadow: inset 0 1px 1px #ffffffd9, inset 0 -1px 2px #74839930, 0 2px 5px #24354e12; }
#loop svg { position: relative; z-index: 1; }
#loop::before { content: ''; position: absolute; inset: 0; pointer-events: none; border-radius: inherit; border: 1px solid #ffffffc2; background: linear-gradient(145deg, #ffffffb3, #e8eff740 65%, #ffffff26); opacity: .5; box-shadow: inset 0 1px 1px #fff, inset 0 -1px 2px #74839926; transition: opacity 240ms ease; }
#loop[aria-pressed="true"] { color: #2c6bab; background: transparent; box-shadow: inset 0 1px 1px #fff, inset 0 -1px 2px #74839952, 0 3px 8px #24354e26; }
#loop[aria-pressed="true"]::before { opacity: 1; }
#loop::after { content: ''; position: absolute; z-index: 2; bottom: 4px; left: calc(50% - 1.5px); width: 3px; height: 3px; border-radius: 50%; background: #2c6bab; box-shadow: 0 0 3px #659bd34d; opacity: 0; transform: scale(.5); transition: opacity 180ms ease, transform 220ms var(--ease-out); }
#loop[aria-pressed="true"]::after { opacity: 1; transform: scale(1); }
.loop-off-line { stroke-dasharray: 23; stroke-dashoffset: 0; opacity: 1; transition: stroke-dashoffset 200ms var(--ease-out), opacity 150ms ease; }
#loop[aria-pressed="true"] .loop-off-line { stroke-dashoffset: 23; opacity: 0; }
#loop.is-pressed::before, #loop:active::before { opacity: 0; }
.speed-control { position: relative; }
#speed-toggle { display: flex; align-items: center; justify-content: center; gap: 3px; height: 36px; min-width: 53px; padding: 0 6px; border: 0; border-radius: 18px; background: transparent; color: #394352; font-size: .75rem; font-weight: 550; }
#speed-toggle[hidden] { display: none; }
#speed-toggle svg { width: 13px; height: 13px; transition: transform 220ms var(--ease-out); }
#speed-value { display: inline-block; min-width: 22px; font-variant-numeric: tabular-nums; }
#speed-toggle[aria-expanded="true"] { background: #ffffffb3; box-shadow: inset 0 0 0 1px #fff, 0 2px 7px #26374e17; }
#speed-toggle[aria-expanded="true"] svg { transform: rotate(180deg); }
.speed-menu { position: absolute; bottom: calc(100% + 17px); right: -6px; z-index: 10; width: 126px; padding: 5px; border-radius: 18px; background: #f5f8fcef; backdrop-filter: blur(18px) saturate(160%); -webkit-backdrop-filter: blur(18px) saturate(160%); border: 1px solid #ffffffd9; box-shadow: inset 0 1px 1px #fff, 0 8px 24px #20314d26; transform-origin: calc(100% - 27px) bottom; opacity: 0; transform: translateY(7px) scale(.94); visibility: hidden; transition: opacity 160ms ease, transform 220ms cubic-bezier(.22,1,.36,1), visibility 220ms; }
.speed-menu.is-open { opacity: 1; transform: translateY(0) scale(1); visibility: visible; }
.speed-menu button { display: flex; align-items: center; justify-content: space-between; width: 100%; height: 36px; padding: 0 12px; border: 0; border-radius: 12px; background: transparent; font-size: .8125rem; color: #394352; font-variant-numeric: tabular-nums; }
.speed-menu button span { opacity: 0; color: #0873e1; transition: opacity 150ms ease; }
.speed-menu button[aria-selected="true"] { background: #deebfa; color: #0967c9; }
.speed-menu button[aria-selected="true"] span { opacity: 1; }
.speed-label { position: absolute; clip-path: inset(50%); width: 1px; height: 1px; overflow: hidden; white-space: nowrap; }
select { font-size: .75rem; font-weight: 500; letter-spacing: .02em; border: 0; border-radius: 15px; background: transparent; padding: 8px 2px 8px 7px; min-height: 36px; cursor: pointer; }
.actions-header { display: flex; justify-content: space-between; align-items: baseline; margin: 29px 5px 15px; gap: 20px; }
.actions-header > span:first-child { font-size: 1.1rem; font-weight: 550; letter-spacing: -.025em; }
#selection-note { font-size: .75rem; color: var(--secondary); }
.actions { position: relative; isolation: isolate; display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); width: min(390px, 100%); margin: 26px auto 0; align-items: center; gap: 4px; padding: 5px; border-radius: 29px; background: #f5f5f7; touch-action: pan-y; user-select: none; }
.action { display: flex; align-items: center; justify-content: center; border: 0; border-radius: 24px; background: transparent; padding: 0; font-size: .75rem; color: #6e6e73; white-space: nowrap; height: 48px; min-width: 0; touch-action: pan-y; }
.action.active { color: var(--ink); }
.action { position: relative; z-index: 1; }
.selection-indicator { position: absolute; z-index: 0; pointer-events: none; border-radius: 22px; background: #fff; box-shadow: 0 3px 10px #00000012, 0 1px 3px #00000008; transform-origin: top left; }
.action .dot { transition: transform 220ms var(--ease-out), box-shadow 200ms ease; }
.view-tools svg, .icon-button svg { transition: transform 220ms var(--ease-out); }
select { transition: transform 220ms var(--ease-out), box-shadow 200ms ease, background-color 160ms ease; }
.scrub-time { position: absolute; pointer-events: none; padding: 4px 9px; border-radius: 9px; background: #1d1d1f; color: white; font-size: .6875rem; font-variant-numeric: tabular-nums; opacity: 0; transform: translate(-50%, 5px) scale(.94); transition: opacity 150ms ease, transform 180ms var(--ease-out); box-shadow: 0 3px 10px #00000018; }
.scrub-time.visible { opacity: 1; transform: translate(-50%, 0) scale(1); }
.action .dot { height: 14px; width: 14px; flex-shrink: 0; border-radius: 50%; background: var(--track-color); box-shadow: inset 0 1px 1px #ffffff40; }
.action .all-colors { width: 16px; height: 16px; background: radial-gradient(ellipse at 18% 18%, #70b9eb 0%, #70b9eb00 65%), radial-gradient(ellipse at 82% 18%, #b18cdd 0%, #b18cdd00 65%), radial-gradient(ellipse at 87% 78%, #e6a0b6 0%, #e6a0b600 65%), radial-gradient(ellipse at 48% 95%, #e7bd85 0%, #e7bd8500 62%), radial-gradient(ellipse at 5% 85%, #87bd8f 0%, #87bd8f00 65%), linear-gradient(135deg, #6bb9bd, #c08ccd); box-shadow: inset 0 1px 2px #ffffff73, 0 0 0 .5px #7d8c9e1f; }
.action::after { content: attr(data-label); position: absolute; bottom: calc(100% + 13px); left: 50%; transform: translate(-50%, 4px) scale(.96); padding: 5px 9px; background: #242b36; color: #fff; font-size: .6875rem; line-height: 1.4; font-weight: 450; border-radius: 9px; pointer-events: none; opacity: 0; transition: opacity 130ms ease, transform 180ms var(--ease-out); }
.action:focus-visible::after { opacity: 1; transform: translate(-50%, 0) scale(1); }
.actions.is-scrubbing, .actions.is-scrubbing .action { cursor: grabbing; }
.actions.is-scrubbing .action { transform: none; background: transparent; box-shadow: none; }
.actions.is-scrubbing .action::after { opacity: 0; }
.caption-slot { height: 3.2em; margin: 25px auto 5px; font-size: 1rem; }
.caption { text-align: center; font-size: 1rem; letter-spacing: -.015em; line-height: 1.6; min-height: 1.6em; margin: 0; color: #515156; }
.control-note { text-align: center; font-size: .75rem; color: #85858b; margin: 7px 0 0; }
.loading { position: absolute; inset: 0; z-index: 2; background: #f5f5f7; }
.loading[hidden] { display: none; }
#load-progress { position: absolute; top: 0; left: 0; width: 100%; height: 3px; border: 0; appearance: none; background: transparent; }
#load-progress::-webkit-progress-bar { background: transparent; }
#load-progress::-webkit-progress-value { background: #929298; transition: width 180ms ease; }
#load-progress::-moz-progress-bar { background: #929298; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.teaser:not(.is-ready) .viewer-topbar, .teaser:not(.is-ready) .viewer-hint { visibility: hidden; opacity: 0; pointer-events: none; }
.teaser.is-loading #viewport, .teaser.has-error #viewport { visibility: hidden; }
.teaser.has-error .caption { display: none; }
.caption[hidden] { display: none; }
.viewer-shell:fullscreen { width: 100vw; height: 100dvh; border-radius: 0; box-shadow: none; }
.noscript { text-align: center; font-size: .8125rem; }
/* Clear glass belongs to the floating control layer; content stays untreated. */
.playback, .view-tools, .selection-indicator {
  --glass-x: 50%; --glass-y: 15%;
  background: linear-gradient(150deg, #ffffff78 0%, #eff3f833 45%, #e0e6ee52 100%);
  backdrop-filter: blur(9px) saturate(180%) contrast(1.06);
  -webkit-backdrop-filter: blur(9px) saturate(180%) contrast(1.06);
  border: 1px solid #ffffffa6;
  box-shadow: inset 0 1px 1px #fff, inset 0 -1px 2px #76839540, inset 1px 0 2px #ffffffd9, 0 8px 24px #28364b1f, 0 2px 5px #28364b12;
}
.playback, .view-tools { isolation: isolate; }
.playback { bottom: 46px; padding: 13px 18px; min-height: 72px; border-radius: 38px; }
/* Light frost keeps controls legible while curved edges retain the glass rim. */
.playback {
  background: linear-gradient(180deg, #ffffff94, #ffffff66 28%, #e8edf566 72%, #ffffff99);
  backdrop-filter: blur(5px) var(--rim-filter, blur(0px)) saturate(135%);
  -webkit-backdrop-filter: blur(5px) var(--rim-filter, blur(0px)) saturate(135%);
  border-color: #fffffff2;
  box-shadow: inset 0 3px 2px #fffffff5, inset 0 -3px 3px #5a6d8438, inset 3px 0 4px #ffffffdb, inset -3px 0 4px #ffffffc7, 0 9px 24px #23334c1f, 0 2px 5px #23334c14;
}
.viewer-hint { bottom: 137px; }
.playback::before, .view-tools::before, .selection-indicator::before {
  content: ''; position: absolute; inset: 0; border-radius: inherit; pointer-events: none; z-index: -1;
  padding: 1px;
  background: linear-gradient(135deg, #fff 0%, #ffffff33 22%, #a8b4c359 47%, #fff 72%, #ffffff33 100%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
}
.playback::after, .view-tools::after, .selection-indicator::after {
  content: ''; position: absolute; inset: 0; border-radius: inherit; pointer-events: none; z-index: -1;
  background: radial-gradient(ellipse 150px 95px at var(--glass-x) var(--glass-y), #ffffffed 0%, #ffffff63 32%, #ffffff00 76%);
  opacity: .4; transition: opacity 180ms ease;
}
.playback.glass-hover::after, .view-tools.glass-hover::after { opacity: .9; }
.playback::before { inset: 2px; padding: 2px; background: linear-gradient(165deg, #ffffff, #ffffff29 30%, #7b8ea657 56%, #ffffffeb 85%); }
.playback::after { background: linear-gradient(180deg, #ffffff47, #ffffff00 23%, #ffffff00 78%, #ffffff52); opacity: 1; }
.playback.glass-pressed, .view-tools.glass-pressed {
  box-shadow: inset 0 2px 5px #69778c24, inset 0 1px 1px #fff, inset 0 -1px 1px #ffffffd9, 0 4px 13px #28364b1a;
}
.view-tools { position: relative; padding: 5px; border-radius: 28px; }
.playback .time-label, .playback select { color: #4b515c; font-weight: 550; }
.playback .icon-button { color: #394352; }
.play-button { position: relative; isolation: isolate; background: transparent; box-shadow: inset 0 1px 1px #ffffff57, 0 3px 8px #1723382e; }
.play-button svg { position: relative; z-index: 1; }
.play-button::before { content: ''; position: absolute; inset: 0; border-radius: inherit; pointer-events: none; background: linear-gradient(155deg, #fbfcff, #dce4ee 80%); opacity: 1; transition: opacity 240ms ease; }
.play-button::after { content: ''; position: absolute; inset: 0; border-radius: inherit; pointer-events: none; border: 1px solid #ffffffd9; box-shadow: inset 0 1px 1px #fff, inset 0 -1px 2px #74839952; opacity: 0; transition: opacity 240ms ease; }
.actions {
  background: linear-gradient(175deg, #8593a326, #d4dce524 48%, #96a5b526);
  border: 1px solid #ffffffeb;
  backdrop-filter: blur(8px) saturate(145%);
  -webkit-backdrop-filter: blur(8px) saturate(145%);
  box-shadow: inset 0 2px 2px #fffffff5, inset 0 -2px 2px #6579912b, inset 2px 0 3px #ffffffdb, 0 8px 22px #28364b12, 0 2px 4px #28364b0f;
}
.selection-indicator {
  isolation: isolate; background: #ffffff12; backdrop-filter: none; -webkit-backdrop-filter: none;
  border-color: #fffffff5; border-radius: 25px; transform-origin: center;
  scale: 1;
  box-shadow: inset 0 2px 1px #fff, inset 0 -1px 2px #62768e2b, inset 2px 0 3px #ffffffeb, inset -2px 0 3px #ffffffb3, 0 3px 9px #28364b18, 0 1px 2px #28364b12;
  transition: scale 420ms cubic-bezier(.2,.8,.2,1), box-shadow 280ms ease;
}
.selection-indicator::before { inset: 2px; padding: 1px; background: linear-gradient(145deg, #ffffff, #ffffff14 35%, #92a7bf36 62%, #ffffffb3); }
.selection-indicator::after { background: linear-gradient(165deg, #ffffff9e, #ffffff0a 35%, #99acc318 75%, #ffffff70); opacity: .8; transition: opacity 280ms ease; }
.actions.is-scrubbing .selection-indicator::after, .actions:has(.action.is-pressed) .selection-indicator::after { opacity: .2; }
.actions.is-scrubbing .selection-indicator {
  scale: var(--lens-stretch, 1.12) var(--lens-squash, .96);
  transition: scale 100ms ease-out, box-shadow 180ms ease;
  box-shadow: inset 0 2px 1px #fff, inset 0 -1px 2px #62768e38, inset 2px 0 3px #ffffffeb, 0 4px 11px #24354e1f;
}
.action.active { color: #171d28; font-weight: 600; }
@media (hover: hover) and (pointer: fine) {
  #loop:hover::before { opacity: 0; }
  #loop:hover { box-shadow: inset 0 1px 1px #fff, inset 0 -1px 2px #74839952, 0 4px 10px #24354e26; }
  #speed-toggle:hover { background: #ffffffa6; transform: translateY(-1px); box-shadow: 0 3px 8px #26374e14; }
  .speed-menu button:hover { background: #dce7f4; }
  .view-tools button:hover, .icon-button:hover, select:hover { background: #0000000c; color: var(--ink); transform: translateY(-2px); box-shadow: 0 4px 9px #0000000d; }
  .view-tools button:hover svg, .icon-button:hover svg { transform: scale(1.12); }
  .play-button:hover { color: #263345; transform: translateY(-2px) scale(1.07); box-shadow: 0 3px 8px #24354e29; }
  .play-button:hover::before { opacity: 0; }
  .play-button:hover::after { opacity: 1; }
  .actions:hover .selection-indicator::after { opacity: .2; }
  .action:hover { transform: translateY(-2px); color: var(--ink); }
  .action:not(.active):hover { background: #ffffff47; box-shadow: inset 0 1px 1px #ffffffb3, 0 2px 6px #28364b09; }
  .action:hover .dot { transform: scale(1.3); box-shadow: 0 0 0 3px #00000006; }
  .actions:not(.is-scrubbing) .action:hover::after { opacity: 1; transform: translate(-50%, 0) scale(1); }
  .timeline-control:hover .timeline-thumb { width: 34px; height: 22px; }
  .timeline-control:hover .timeline-thumb::before { opacity: 0; }
  .timeline-control.is-dragging .timeline-thumb { width: 38px; height: 24px; }
}
button.is-pressed:not(:disabled), button:active:not(:disabled), select.is-pressed { transform: translateY(1px) scale(.93); box-shadow: inset 0 1px 4px #00000013; transition-duration: 80ms; }
.play-button.is-pressed:not(:disabled), .play-button:active:not(:disabled) { transform: scale(.88); color: #263345; background: transparent; box-shadow: 0 3px 8px #24354e29; }
.play-button.is-pressed::before, .play-button:active::before { opacity: 0; }
.play-button.is-pressed::after, .play-button:active::after { opacity: 1; }
@media (max-width: 760px) {
  main { padding: 0 18px 38px; }
  .paper-heading { padding: 42px 18px 30px; margin-bottom: 20px; }
  .project-name { font-size: clamp(2.9rem, 11vw, 4.5rem); margin-bottom: 14px; }
  .paper-title { font-size: 1.125rem; line-height: 1.5; letter-spacing: -.015em; }
  .site-footer { padding: 8px 18px; }
  .desktop-break { display: none; }
  .viewer-shell { height: 530px; border-radius: 24px; }
  .viewer-topbar { inset: 12px 12px auto; }
  .live-badge { font-size: .6875rem; padding: 8px; gap: 6px; }
  .view-tools button { height: 38px; min-width: 38px; padding: 0; }
  .view-tools button span { display: none; }
  .playback { width: calc(100% - 28px); bottom: 16px; flex-wrap: wrap; gap: 2px 8px; padding: 9px 13px 12px; border-radius: 25px; }
  .transport { gap: 3px; }
  .play-button { width: 38px; height: 38px; }
  .icon-button { width: 29px; }
  .time-label { font-size: .625rem; min-width: 85px; }
  .time-separator { margin: 0 4px; }
  .play-options { margin-left: auto; gap: 1px; }
  #speed-toggle { min-width: 48px; font-size: .6875rem; }
  select { padding: 8px 0 8px 4px; font-size: .6875rem; }
  .timeline-control { order: 3; flex-basis: 100%; height: 24px; margin: 0 3px; }
  #timeline { height: 24px; }
  .viewer-hint { bottom: 110px; font-size: .625rem; }
  .actions-header { margin: 25px 3px 13px; gap: 12px; }
  .actions-header > span:first-child { font-size: .9375rem; }
  #selection-note { font-size: .625rem; }
  .actions { gap: 2px; }
  .action::after { display: none; }
  .caption-slot { height: 4.8em; margin-top: 20px; font-size: .875rem; }
  .caption { font-size: .875rem; }
  .control-note { font-size: .6875rem; line-height: 1.5; }
}
@media (prefers-reduced-motion: reduce) {
  .speed-menu, #speed-toggle svg, .loop-off-line, #loop::before, #loop::after, .teaser .playback button, .teaser .actions button { transition: none; }
  .spinner { animation: none; }
  button, select, .action .dot, .action::after, .view-tools svg, .icon-button svg, .scrub-time, .timeline-thumb, .timeline-thumb::before, .play-button::before, .play-button::after, .selection-indicator, .selection-indicator::after { transition: none; }
  button:hover, button:active:not(:disabled), button.is-pressed:not(:disabled), select:hover, select.is-pressed, .action:hover .dot, .view-tools button:hover svg, .icon-button:hover svg { transform: none; }
  button:active:not(:disabled), button.is-pressed:not(:disabled) { background-color: #dedee4; }
}
@media (prefers-reduced-transparency: reduce) {
  #loop { background: #f4f6f9; }
  .speed-menu { background: #f5f8fc; backdrop-filter: none; -webkit-backdrop-filter: none; }
  .playback, .view-tools, .loading-card, .actions, .selection-indicator { background: #f7f7f9; backdrop-filter: none; -webkit-backdrop-filter: none; }
  .playback::after, .view-tools::after, .selection-indicator::after { display: none; }
  .timeline-control .timeline-thumb::before { opacity: 1; }
  #play::before { opacity: 1; }
  #play { color: #344052; }
}
@media (prefers-contrast: more) {
  #loop { background: #fff; outline: 1px solid #727277; }
  #loop[aria-pressed="true"] { color: #0754a1; outline: 2px solid #0754a1; }
  .speed-menu { background: #fff; border-color: #727277; backdrop-filter: none; -webkit-backdrop-filter: none; }
  :root { --secondary: #414145; }
  .playback, .view-tools, .actions, .selection-indicator { box-shadow: inset 0 0 0 1px #727277; background: #fff; backdrop-filter: none; -webkit-backdrop-filter: none; }
  .action.active { outline: 1px solid #727277; }
  .control-note, .time-label, .viewer-hint { color: #414145; }
  .timeline-thumb { border-color: #414145; }
  .timeline-control .timeline-thumb::before { opacity: 1; }
  #play::before { opacity: 1; }
  #play { color: #344052; }
}
@supports not (backdrop-filter: blur(1px)) {
  .playback, .view-tools, .selection-indicator { background-color: #f4f6f9eb; }
}