:root {
  --ink: #12162c;
  --ink-soft: #3e435b;
  --paper: #f4f1e9;
  --paper-bright: #fbfaf6;
  --purple: #7a69ff;
  --purple-dark: #5849db;
  --coral: #ff806c;
  --lime: #c7f06f;
  --line: rgba(18, 22, 44, .15);
  --mono: "DM Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "Manrope", Inter, system-ui, sans-serif;
  --serif: "Instrument Serif", Georgia, serif;
  --shell: min(1280px, calc(100vw - 64px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--sans); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
img { max-width: 100%; display: block; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
::selection { color: var(--ink); background: var(--lime); }

.skip-link { position: fixed; top: 10px; left: 10px; z-index: 100; padding: 10px 14px; color: white; background: var(--ink); transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }
.pointer-glow { position: fixed; z-index: 10; width: 360px; height: 360px; border-radius: 50%; pointer-events: none; background: radial-gradient(circle, rgba(122,105,255,.09), transparent 68%); transform: translate(-50%, -50%); opacity: 0; transition: opacity .3s; mix-blend-mode: multiply; }
body:hover .pointer-glow { opacity: 1; }

.site-header { position: fixed; z-index: 50; top: 0; left: 0; right: 0; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; min-height: 76px; padding: 12px 32px; border-bottom: 1px solid transparent; transition: background .25s, border-color .25s, transform .25s; }
.site-header.is-scrolled { background: rgba(244,241,233,.88); border-color: var(--line); backdrop-filter: blur(16px); }
.wordmark { display: inline-flex; align-items: center; gap: 10px; width: max-content; text-decoration: none; font-weight: 800; letter-spacing: -.03em; }
.wordmark-mark { display: grid; place-items: center; width: 36px; height: 36px; color: var(--lime); background: var(--ink); border-radius: 50%; }
.wordmark-mark svg { width: 27px; fill: none; stroke: currentColor; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.wordmark-mark .wordmark-pen { fill: var(--coral); stroke: var(--coral); }
.desktop-nav { display: flex; gap: 34px; }
.desktop-nav a { position: relative; font-size: 12px; font-weight: 700; text-decoration: none; text-transform: uppercase; letter-spacing: .09em; }
.desktop-nav a::after { position: absolute; content: ""; left: 0; right: 100%; bottom: -7px; height: 2px; background: var(--purple); transition: right .25s; }
.desktop-nav a:hover::after, .desktop-nav a.is-active::after { right: 0; }

.section-shell { width: var(--shell); margin-inline: auto; }
.hero { position: relative; display: grid; place-items: center; min-height: 850px; height: 100vh; padding: 132px 32px 82px; overflow: hidden; isolation: isolate; }
.hero-grid { position: absolute; inset: 0; z-index: -3; opacity: .6; background-image: linear-gradient(rgba(18,22,44,.055) 1px, transparent 1px), linear-gradient(90deg, rgba(18,22,44,.055) 1px, transparent 1px); background-size: 48px 48px; mask-image: linear-gradient(to bottom, transparent, #000 25%, #000 75%, transparent); }
.hero::before { position: absolute; content: ""; z-index: -2; width: 48vw; aspect-ratio: 1; top: 12%; left: 28%; border: 1px solid rgba(122,105,255,.23); border-radius: 50%; box-shadow: 0 0 0 90px rgba(122,105,255,.025), 0 0 0 180px rgba(122,105,255,.018); }
.orb { position: absolute; z-index: -1; border-radius: 50%; filter: blur(2px); will-change: transform; }
.orb-one { width: 170px; height: 170px; left: 7vw; top: 23%; background: var(--coral); box-shadow: inset -28px -22px 40px rgba(117,42,51,.14); }
.orb-two { width: 116px; height: 116px; right: 11vw; bottom: 18%; background: var(--lime); box-shadow: inset -20px -16px 30px rgba(83,108,30,.13); }
.hero-copy { position: relative; z-index: 2; max-width: 980px; text-align: center; }
.eyebrow { margin: 0 0 24px; font-family: var(--mono); font-size: 11px; font-weight: 500; letter-spacing: .16em; text-transform: uppercase; }
.hero h1 { margin: 0; font-size: clamp(42px, 5vw, 76px); line-height: .97; letter-spacing: -.058em; font-weight: 700; }
.hero h1 em { font-family: var(--serif); font-weight: 400; color: var(--purple-dark); }
.hero h1 span { position: relative; display: inline-block; color: var(--purple-dark); }
.hero h1 span::after { position: absolute; content: ""; left: 1%; right: -1%; bottom: -.06em; height: .12em; background: var(--coral); border-radius: 70% 30% 55% 45%; transform: rotate(-1deg); opacity: .85; }
.author-block { margin-top: 26px; }
.authors { display: flex; justify-content: center; align-items: baseline; flex-wrap: wrap; gap: 4px; margin: 0; font-size: 16px; }
.authors strong { font-weight: 800; }
.authors a { text-decoration-color: rgba(88,73,219,.4); text-underline-offset: 4px; transition: color .2s, text-decoration-color .2s; }
.authors a:hover { color: var(--purple-dark); text-decoration-color: currentColor; }
.authors sup, .affiliations sup { color: var(--purple-dark); font-family: var(--mono); font-size: .66em; font-weight: 700; }
.author-separator { margin-inline: 8px; color: rgba(18,22,44,.42); }
.affiliations { margin-top: 10px; color: var(--ink-soft); font-size: 11px; line-height: 1.55; }
.affiliations p { margin: 1px 0; }
.hero-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.button { display: inline-flex; justify-content: center; align-items: center; gap: 12px; min-height: 50px; padding: 0 22px; border: 1px solid var(--ink); border-radius: 999px; font-size: 13px; font-weight: 800; text-decoration: none; transition: transform .2s, color .2s, background .2s, box-shadow .2s; }
.button svg { width: 18px; fill: none; stroke: currentColor; stroke-width: 2; }
.button:hover { transform: translateY(-3px); }
.button-primary { color: white; background: var(--ink); box-shadow: 0 8px 0 rgba(122,105,255,.35); }
.button-primary:hover { background: var(--purple-dark); box-shadow: 0 10px 0 rgba(255,128,108,.45); }
.button-secondary { background: rgba(255,255,255,.36); }
.button-secondary:hover { background: white; }
.button-disabled { color: #777b88; background: rgba(128,132,145,.13); border-color: rgba(85,89,103,.24); box-shadow: none; cursor: not-allowed; }
.button-disabled span { font-family: var(--mono); font-size: 8px; font-weight: 500; letter-spacing: .06em; text-transform: uppercase; opacity: .72; }
.button-disabled:hover { transform: none; }

.section-kicker { display: flex; justify-content: space-between; padding-bottom: 16px; border-bottom: 1px solid var(--line); font-family: var(--mono); font-size: 10px; letter-spacing: .12em; text-transform: uppercase; }
.teaser-section { padding: 70px 0 150px; }
.teaser-frame { position: relative; margin: 36px 0 0; padding: 10px; background: var(--paper-bright); border: 1px solid var(--line); box-shadow: 0 26px 80px rgba(28,28,50,.12); transform-style: preserve-3d; transition: transform .18s ease-out; }
.teaser-frame::after { position: absolute; content: ""; inset: 9px; border: 1px solid rgba(18,22,44,.09); pointer-events: none; }
.teaser-frame img { width: 100%; }
.teaser-frame figcaption { padding: 14px 12px 7px; color: var(--ink-soft); font-size: 12px; }

.section-number { padding-top: 22px; border-top: 1px solid var(--line); font-family: var(--mono); font-size: 11px; letter-spacing: .13em; text-transform: uppercase; }
.abstract-section { padding: 30px 0 170px; }
.abstract-layout { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(360px, .75fr); gap: 80px; align-items: start; margin-top: 82px; }
.display-heading { margin: 0; font-size: clamp(48px, 5.8vw, 82px); line-height: .98; letter-spacing: -.055em; }
.display-heading em { font-family: var(--serif); color: var(--purple-dark); font-weight: 400; }
.abstract-copy { padding-top: 8px; }
.abstract-copy p { margin: 0 0 22px; color: var(--ink-soft); font-size: 16px; line-height: 1.76; }
.abstract-copy p:first-child { color: var(--ink); font-size: 20px; line-height: 1.55; }

.method-section { padding: 110px 0 120px; color: white; background: var(--ink); }
.section-number-light { color: rgba(255,255,255,.64); border-color: rgba(255,255,255,.18); }
.method-heading-row, .comparison-heading-row { display: grid; grid-template-columns: 1.35fr .65fr; gap: 80px; align-items: end; margin-top: 62px; }
.method-section .display-heading em, .comparisons-section .display-heading em { color: var(--lime); }
.method-intro, .comparison-intro { max-width: 430px; margin: 0 0 7px; color: rgba(255,255,255,.68); line-height: 1.7; }
.stage-tabs { display: flex; gap: 8px; margin: 64px 0 20px; }
.stage-tab { flex: 1; display: flex; align-items: center; gap: 18px; min-height: 66px; padding: 10px 18px; color: rgba(255,255,255,.6); background: transparent; border: 1px solid rgba(255,255,255,.18); cursor: pointer; text-align: left; transition: color .2s, background .2s, border .2s; }
.stage-tab span { font-family: var(--mono); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; }
.stage-tab.is-active { color: var(--ink); background: var(--lime); border-color: var(--lime); }
.pipeline-frame { padding: 14px; background: white; overflow: hidden; }
.pipeline-image-stack { --stage-split: 32.6%; position: relative; overflow: hidden; background: #dfe3ed; isolation: isolate; }
.pipeline-image-stack img { width: 100%; }
.pipeline-image-muted { filter: blur(3px) saturate(.32) brightness(.68); opacity: .48; transform: scale(1.008); }
.pipeline-image-focus { position: absolute; inset: 0; z-index: 1; transition: clip-path .55s cubic-bezier(.22,.8,.3,1); }
.pipeline-frame[data-stage-visual="reconstruct"] .pipeline-image-focus { clip-path: polygon(0 0, 100% 0, 100% var(--stage-split), 0 var(--stage-split)); }
.pipeline-frame[data-stage-visual="motion"] .pipeline-image-focus { clip-path: polygon(0 var(--stage-split), 100% var(--stage-split), 100% 100%, 0 100%); }
.pipeline-focus-line { position: absolute; z-index: 2; left: 0; right: 0; top: var(--stage-split); height: 2px; background: var(--lime); box-shadow: 0 0 18px rgba(199,240,111,.9); transform: translateY(-1px); pointer-events: none; }
.stage-detail { display: grid; grid-template-columns: 100px minmax(260px, .6fr) minmax(300px, 1fr); gap: 36px; align-items: start; margin-top: 28px; padding-top: 28px; border-top: 1px solid rgba(255,255,255,.18); }
.stage-detail-index { color: var(--lime); font-family: var(--mono); }
.stage-detail h3 { margin: 0; font-size: 20px; }
.stage-detail p { margin: 0; color: rgba(255,255,255,.62); line-height: 1.7; }

.highlights-section { padding: 140px 0 165px; }
.highlights-section > .display-heading { margin-top: 64px; }
.highlight-list { margin-top: 75px; border-top: 1px solid var(--line); }
.highlight-item { display: grid; grid-template-columns: 64px 70px 1fr minmax(300px, .8fr); gap: 30px; align-items: center; min-height: 155px; padding: 26px 0; border-bottom: 1px solid var(--line); transition: padding .25s, background .25s; }
.highlight-item:hover { padding-inline: 18px; background: rgba(255,255,255,.44); }
.highlight-num { font-family: var(--mono); font-size: 11px; }
.highlight-icon { display: grid; place-items: center; width: 60px; height: 60px; color: var(--purple-dark); background: white; border: 1px solid var(--line); border-radius: 50%; }
.highlight-icon svg { width: 36px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.highlight-item h3 { margin: 0; font-size: clamp(20px, 2vw, 30px); letter-spacing: -.035em; }
.highlight-item p { margin: 0; color: var(--ink-soft); font-size: 14px; line-height: 1.7; }

.comparisons-section { padding: 110px 0 125px; color: white; background: #24204b; overflow: hidden; }
.comparison-intro { color: rgba(255,255,255,.68); }
.sample-picker { display: flex; gap: 8px; margin-top: 55px; overflow-x: auto; padding-bottom: 4px; scrollbar-width: thin; }
.sample-button { flex: 0 0 auto; padding: 9px 16px; color: rgba(255,255,255,.66); background: transparent; border: 1px solid rgba(255,255,255,.2); border-radius: 999px; font-size: 12px; cursor: pointer; }
.sample-button.is-active { color: var(--ink); background: var(--lime); border-color: var(--lime); }
.comparison-stage { display: grid; grid-template-columns: minmax(220px, .29fr) minmax(0, .71fr); gap: 18px; margin-top: 22px; }
.input-panel, .carousel { padding: 18px; background: rgba(10,12,32,.42); border: 1px solid rgba(255,255,255,.17); }
.media-label { display: flex; justify-content: space-between; align-items: center; min-height: 35px; font-family: var(--mono); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; }
.media-label span:first-child { color: var(--lime); }
.media-label span:last-child { max-width: 70%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: rgba(255,255,255,.5); }
.input-media { position: relative; display: grid; place-items: center; aspect-ratio: 1; margin-top: 10px; overflow: hidden; background: #f9f8f3; }
.input-media img { width: 100%; height: 100%; object-fit: contain; }
.input-panel p { margin: 18px 0 2px; color: rgba(255,255,255,.55); font-size: 12px; line-height: 1.6; }
.media-skeleton { width: 60%; height: 60%; border-radius: 50%; border: 1px solid rgba(122,105,255,.4); animation: pulse 1.2s infinite alternate; }
.carousel { min-width: 0; outline: none; }
.carousel:focus-visible { box-shadow: 0 0 0 3px var(--lime); }
.carousel-topline { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.carousel-topline > div:first-child { display: flex; align-items: baseline; gap: 16px; }
.carousel-overline { color: var(--lime); font-family: var(--mono); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; }
.carousel-topline strong { font-size: 13px; }
.carousel-controls { display: flex; gap: 7px; }
.carousel-controls button { display: grid; place-items: center; width: 39px; height: 39px; color: white; background: transparent; border: 1px solid rgba(255,255,255,.25); border-radius: 50%; cursor: pointer; transition: color .2s, background .2s, transform .2s; }
.carousel-controls button:hover { color: var(--ink); background: var(--lime); transform: scale(1.06); }
.carousel-controls svg { width: 19px; fill: none; stroke: currentColor; stroke-width: 1.8; }
.carousel-viewport { overflow: hidden; cursor: grab; touch-action: pan-y; }
.carousel-viewport.is-dragging { cursor: grabbing; }
.carousel-track { display: flex; margin-inline: -7px; transition: transform .55s cubic-bezier(.22,.82,.24,1); will-change: transform; }
.result-card { flex: 0 0 50%; padding: 7px; }
.result-card-inner { position: relative; overflow: hidden; background: var(--paper-bright); color: var(--ink); border: 1px solid rgba(255,255,255,.18); }
.result-media { position: relative; aspect-ratio: 1; overflow: hidden; background: #f8f6f0; }
.result-media > img { width: 100%; height: 100%; object-fit: contain; }
.result-meta { display: flex; justify-content: space-between; align-items: center; gap: 14px; min-height: 55px; padding: 10px 14px; border-top: 1px solid var(--line); }
.result-meta strong { font-size: 14px; }
.result-meta span { color: #777b8d; font-family: var(--mono); font-size: 9px; text-transform: uppercase; letter-spacing: .08em; }
.result-card.is-ours .result-card-inner { outline: 3px solid var(--lime); outline-offset: -3px; }
.result-card.is-ours .result-meta span { color: var(--purple-dark); }
.mock-animation { position: absolute; inset: 0; overflow: hidden; background: radial-gradient(circle at 32% 32%, rgba(122,105,255,.11), transparent 30%), linear-gradient(135deg, #fbfaf6, #ece8f7); }
.mock-animation::before { position: absolute; content: ""; width: 54%; height: 54%; left: 21%; top: 21%; border: 3px solid var(--ink); border-radius: 48% 52% 37% 63%; clip-path: polygon(0 0, 100% 0, 100% 72%, 0 100%); animation: mock-drift 3.6s ease-in-out infinite alternate; }
.mock-animation::after { position: absolute; content: ""; width: 22%; aspect-ratio: 1; left: 39%; top: 39%; background: var(--coral); border: 3px solid var(--ink); border-radius: 50% 44% 55% 42%; animation: mock-orbit 3.2s ease-in-out infinite; }
.mock-path { position: absolute; width: 70%; height: 70%; left: 15%; top: 15%; border: 2px dashed rgba(88,73,219,.38); border-radius: 50%; transform: rotate(-22deg); }
.mock-badge { position: absolute; top: 12px; left: 12px; z-index: 2; padding: 6px 8px; color: var(--ink); background: var(--lime); font-family: var(--mono); font-size: 8px; letter-spacing: .08em; text-transform: uppercase; }
.carousel-footer { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 18px 4px 2px; }
.carousel-dots { display: flex; gap: 7px; }
.carousel-dot { width: 22px; height: 3px; padding: 0; background: rgba(255,255,255,.23); border: 0; cursor: pointer; transition: width .2s, background .2s; }
.carousel-dot.is-active { width: 42px; background: var(--lime); }
.drag-hint { display: inline-flex; gap: 8px; align-items: center; color: rgba(255,255,255,.42); font-family: var(--mono); font-size: 9px; text-transform: uppercase; letter-spacing: .07em; }
.drag-hint svg { width: 18px; fill: none; stroke: currentColor; }
.mock-notice { display: flex; gap: 10px; align-items: center; margin: 20px 0 0; color: rgba(255,255,255,.48); font-size: 11px; }
.mock-notice span { width: 7px; height: 7px; background: var(--coral); border-radius: 50%; }

.site-footer { display: flex; justify-content: center; align-items: center; padding: 35px 32px; color: rgba(255,255,255,.66); background: var(--ink); font-size: 11px; text-align: center; }
.site-footer p { margin: 0; line-height: 1.5; }

.bibtex-section { padding: 25px 0 145px; }
.bibtex-layout { display: grid; grid-template-columns: minmax(220px, .42fr) minmax(0, 1fr); gap: 70px; align-items: start; margin-top: 58px; }
.bibtex-layout .eyebrow { margin-bottom: 18px; color: var(--purple-dark); }
.bibtex-layout .display-heading { font-size: clamp(46px, 5vw, 72px); }
.bibtex-code { margin: 0; padding: 30px 32px; overflow-x: auto; color: var(--ink); background: var(--paper-bright); border: 1px solid rgba(18,22,44,.12); border-left: 6px solid var(--purple); box-shadow: 0 20px 55px rgba(18,22,44,.1); font: 12px/1.75 var(--mono); white-space: pre-wrap; overflow-wrap: anywhere; }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s cubic-bezier(.22,.8,.3,1); }
.reveal.is-visible { opacity: 1; transform: none; }
@keyframes pulse { to { transform: scale(.82); opacity: .28; } }
@keyframes mock-drift { to { transform: translate(8%, -5%) rotate(9deg); } }
@keyframes mock-orbit { 0%,100% { transform: translate(-35%, 25%) rotate(-10deg); } 50% { transform: translate(45%, -22%) rotate(18deg); } }

@media (max-width: 980px) {
  :root { --shell: min(100% - 40px, 900px); }
  .desktop-nav { display: none; }
  .site-header { grid-template-columns: 1fr auto; padding-inline: 20px; }
  .abstract-layout, .method-heading-row, .comparison-heading-row { grid-template-columns: 1fr; gap: 30px; }
  .abstract-copy { max-width: 700px; }
  .highlight-item { grid-template-columns: 45px 62px 1fr; }
  .highlight-item p { grid-column: 3; }
  .comparison-stage { grid-template-columns: 230px minmax(0, 1fr); }
  .result-card { flex-basis: 100%; }
}

@media (max-width: 700px) {
  :root { --shell: calc(100vw - 28px); }
  .site-header { min-height: 66px; }
  .hero { min-height: 740px; padding-inline: 16px; }
  .hero h1 { font-size: clamp(42px, 13vw, 64px); }
  .orb-one { width: 90px; height: 90px; top: 20%; }
  .orb-two { width: 75px; height: 75px; right: 4vw; bottom: 20%; }
  .hero-actions { flex-direction: column; align-items: center; }
  .hero-actions .button { width: min(280px, 90vw); }
  .teaser-section { padding-bottom: 100px; }
  .section-kicker span:last-child { display: none; }
  .abstract-section, .highlights-section { padding-bottom: 110px; }
  .abstract-layout { margin-top: 50px; }
  .display-heading { font-size: clamp(42px, 13vw, 62px); }
  .method-section, .comparisons-section { padding-block: 85px; }
  .stage-tabs { flex-direction: column; }
  .stage-detail { grid-template-columns: 45px 1fr; gap: 15px; }
  .stage-detail p { grid-column: 2; }
  .highlight-list { margin-top: 50px; }
  .highlight-item { grid-template-columns: 34px 48px 1fr; gap: 12px; min-height: 130px; }
  .highlight-icon { width: 46px; height: 46px; }
  .highlight-icon svg { width: 28px; }
  .highlight-item p { font-size: 12px; }
  .comparison-stage { grid-template-columns: 1fr; }
  .input-panel { display: grid; grid-template-columns: 120px 1fr; gap: 12px; align-items: center; }
  .media-label { grid-column: 1 / -1; }
  .input-media { margin: 0; }
  .input-panel p { margin: 0; }
  .carousel { padding: 13px; }
  .carousel-topline > div:first-child { display: grid; gap: 4px; }
  .drag-hint { display: none; }
  .site-footer { padding-inline: 20px; }
  .bibtex-section { padding-bottom: 90px; }
  .bibtex-layout { grid-template-columns: 1fr; gap: 32px; margin-top: 42px; }
  .bibtex-code { padding: 22px 20px; font-size: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
  .pointer-glow { display: none; }
}

/* Revised paper narrative and data-driven result galleries */
.overview-heading-row,
.occlusion-heading-row {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, .65fr);
  gap: 72px;
  align-items: end;
  margin-top: 62px;
}
.overview-intro {
  max-width: 440px;
  margin: 0 0 7px;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.75;
}
.overview-abstract {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 34px;
  margin-top: 22px;
  padding: 28px 32px;
  background: var(--ink);
  color: white;
  border-left: 6px solid var(--lime);
}
.overview-abstract-label {
  padding-top: 4px;
  color: var(--lime);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.overview-abstract p {
  max-width: 1000px;
  margin: 0;
  color: rgba(255,255,255,.78);
  font-size: 15px;
  line-height: 1.78;
}
.overview-abstract strong { color: white; }

.comparison-group {
  margin-top: 54px;
  padding: 24px 54px 22px;
  background: rgba(10,12,32,.42);
  border: 1px solid rgba(255,255,255,.17);
}
.comparison-group + .comparison-group { margin-top: 30px; }
.comparison-group-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 30px;
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(255,255,255,.16);
}
.comparison-group-header > div { display: flex; align-items: center; gap: 15px; }
.comparison-group-index {
  display: grid;
  place-items: center;
  width: 33px;
  height: 33px;
  flex: 0 0 auto;
  color: var(--ink);
  background: var(--lime);
  border-radius: 50%;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
}
.comparison-group-header h3 { margin: 0; font-size: clamp(18px, 2vw, 27px); letter-spacing: -.035em; }
.comparison-group-header p { margin: 0; color: rgba(255,255,255,.5); font-family: var(--mono); font-size: 9px; letter-spacing: .05em; text-align: right; }
.sample-meta {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 24px;
  align-items: start;
  min-height: 76px;
  padding: 20px 0 16px;
}
.sample-meta > div { display: flex; align-items: baseline; gap: 10px; }
.sample-meta strong { font-size: 16px; text-transform: capitalize; }
.sample-meta span { color: var(--lime); font-family: var(--mono); font-size: 9px; letter-spacing: .08em; }
.sample-meta p { margin: 0; color: rgba(255,255,255,.68); font-size: 13px; line-height: 1.65; }
.gallery-stage { position: relative; outline: none; }
.gallery-stage:focus-visible { box-shadow: 0 0 0 3px var(--lime); }
.result-row {
  display: grid;
  grid-template-columns: repeat(var(--media-count), minmax(0, 1fr));
  gap: 10px;
  width: 100%;
}
.comparison-media-card {
  min-width: 0;
  margin: 0;
  overflow: hidden;
  color: var(--ink);
  background: var(--paper-bright);
  border: 1px solid rgba(255,255,255,.16);
}
.comparison-media-card.is-ours { box-shadow: inset 0 0 0 3px var(--lime); }
.comparison-media-card.is-input { box-shadow: inset 0 0 0 3px var(--coral); }
.comparison-media { aspect-ratio: 1; overflow: hidden; background: white; }
.comparison-media img,
.comparison-media video { width: 100%; height: 100%; display: block; object-fit: contain; }
.comparison-media-card figcaption {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  min-height: 52px;
  padding: 9px 11px;
  border-top: 1px solid var(--line);
}
.comparison-media-card figcaption strong { min-width: 0; overflow: hidden; font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
.comparison-media-card figcaption span { color: #777b8d; font-family: var(--mono); font-size: 7px; letter-spacing: .06em; text-align: right; text-transform: uppercase; }
.side-arrow {
  position: absolute;
  z-index: 3;
  top: 50%;
  display: grid;
  place-items: center;
  width: 43px;
  height: 43px;
  padding: 0;
  color: var(--ink);
  background: var(--lime);
  border: 0;
  border-radius: 50%;
  box-shadow: 0 8px 24px rgba(0,0,0,.24);
  cursor: pointer;
  transform: translateY(-50%);
  transition: transform .2s, background .2s, opacity .2s;
}
.side-arrow-left { left: -76px; }
.side-arrow-right { right: -76px; }
.side-arrow:hover { background: white; transform: translateY(-50%) scale(1.08); }
.side-arrow:disabled { opacity: .24; cursor: default; transform: translateY(-50%); }
.side-arrow svg { width: 21px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.sample-dots { display: flex; justify-content: center; gap: 7px; min-height: 3px; margin-top: 20px; }
.sample-dot { width: 24px; height: 3px; padding: 0; background: rgba(255,255,255,.22); border: 0; cursor: pointer; transition: width .2s, background .2s; }
.sample-dot.is-active { width: 44px; background: var(--lime); }
.gallery-error { padding: 40px; color: var(--coral); text-align: center; }

.occlusion-section { padding: 135px 0 160px; }
.occlusion-heading-row { margin-bottom: 62px; }
.comparison-group-light {
  margin-top: 0;
  padding-block: 32px;
  background: white;
  border-color: var(--line);
  box-shadow: 0 24px 70px rgba(18,22,44,.08);
}
.comparison-group-light .sample-meta { border-bottom: 1px solid var(--line); margin-bottom: 20px; }
.comparison-group-light .sample-meta p { color: var(--ink-soft); }
.comparison-group-light .sample-meta span { color: var(--purple-dark); }
.comparison-group-light .sample-dot { background: rgba(18,22,44,.18); }
.comparison-group-light .sample-dot.is-active { background: var(--purple-dark); }
.comparison-group-light .side-arrow { color: white; background: var(--purple-dark); }
.comparison-group-light .side-arrow:hover { background: var(--ink); }

@media (max-width: 980px) {
  .overview-heading-row,
  .occlusion-heading-row { grid-template-columns: 1fr; gap: 24px; }
  .comparison-group { padding-inline: 44px; }
  .comparison-group-header { align-items: flex-start; flex-direction: column; }
  .comparison-group-header p { text-align: left; }
  .sample-meta { grid-template-columns: 150px 1fr; }
  .result-row { display: flex; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: thin; }
  .comparison-media-card { flex: 0 0 230px; scroll-snap-align: start; }
  .side-arrow-left { left: -63px; }
  .side-arrow-right { right: -63px; }
}

@media (max-width: 700px) {
  .overview-abstract { grid-template-columns: 1fr; gap: 10px; padding: 24px; }
  .comparison-group { padding: 20px 18px; }
  .sample-meta { grid-template-columns: 1fr; gap: 10px; }
  .comparison-media-card { flex-basis: min(74vw, 270px); }
  .side-arrow { width: 39px; height: 39px; }
  .side-arrow-left { left: -8px; }
  .side-arrow-right { right: -8px; }
  .occlusion-section { padding-block: 90px; }
}

/* Section rhythm, hero sketch field, and compact occlusion presentation */
.hero::before { display: none; }
@keyframes sketch-float { from { translate: 0 -5px; } to { translate: 0 8px; } }

.overview-heading-row {
  grid-template-columns: minmax(0, 1.05fr) minmax(380px, .95fr);
  align-items: start;
}
.overview-heading-row .display-heading { font-size: clamp(48px, 5.3vw, 78px); }
.overview-heading-row .overview-abstract {
  grid-template-columns: 1fr;
  gap: 13px;
  align-self: start;
  margin: 0;
  padding: 30px 32px;
  color: var(--ink);
  background: linear-gradient(135deg, #ffffff 0%, #f3f0ff 100%);
  border: 1px solid rgba(18,22,44,.11);
  border-left: 6px solid var(--purple);
  box-shadow: 0 18px 50px rgba(18,22,44,.12);
}
.overview-heading-row .overview-abstract-label { color: var(--ink); }
.overview-heading-row .overview-abstract p { color: var(--ink); font-size: 14px; line-height: 1.72; }
.overview-heading-row .overview-abstract strong { color: var(--ink); }
.teaser-frame { margin-top: 52px; }

.method-section {
  position: relative;
  padding-top: 155px;
  background: var(--ink);
}
.comparisons-section {
  padding-top: 150px;
  background: #24204b;
}
.occlusion-section {
  position: relative;
  z-index: 0;
  padding: 170px 0 105px;
}
.occlusion-section::before {
  position: absolute;
  z-index: -1;
  content: "";
  top: 0;
  bottom: 0;
  left: 50%;
  width: 100vw;
  background: var(--paper);
  transform: translateX(-50%);
}
.occlusion-heading-row { margin-top: 52px; margin-bottom: 40px; }
.comparison-group-light { padding: 20px 54px 16px; }
.comparison-group-light .sample-meta {
  min-height: 0;
  margin-bottom: 12px;
  padding: 10px 0 12px;
}
.comparison-group-light .comparison-media { height: clamp(145px, 22vh, 220px); aspect-ratio: auto; }
.comparison-group-light .comparison-media-card figcaption { min-height: 40px; padding-block: 7px; }
.comparison-group-light .sample-dots { margin-top: 12px; }

@media (max-width: 1100px) {
  .overview-heading-row { grid-template-columns: 1fr 1fr; gap: 38px; }
}

@media (max-width: 800px) {
  .overview-heading-row { grid-template-columns: 1fr; }
  .overview-heading-row .overview-abstract { max-width: none; }
  .method-section { padding-top: 125px; background: var(--ink); }
  .comparisons-section { padding-top: 125px; }
  .occlusion-section { padding-top: 145px; }
  .comparison-group-light { padding-inline: 18px; }
  .comparison-group-light .comparison-media { height: 180px; }
}

@media (max-width: 520px) {
  .overview-heading-row .overview-abstract { padding: 24px; }
}

/* Hero cat sketches with soft color fields and particle rings */
.hero-cat-scene {
  --halo: 122,105,255;
  position: absolute;
  z-index: 0;
  display: grid;
  place-items: center;
  pointer-events: none;
  isolation: isolate;
}
.hero-cat-scene::before,
.hero-cat-scene::after { position: absolute; content: ""; border-radius: 50%; }
.hero-cat-scene::before {
  z-index: -2;
  inset: -18%;
  background: radial-gradient(circle, rgba(var(--halo),.26) 0 56%, rgba(var(--halo),.11) 57% 68%, transparent 69%);
  filter: blur(.2px);
}
.hero-cat-scene::after {
  z-index: -1;
  inset: -31%;
  color: rgba(var(--halo),.72);
  background-image: radial-gradient(circle, currentColor 0 1.6px, transparent 1.9px);
  background-size: 12px 12px;
  background-position: 2px 4px;
  -webkit-mask-image: radial-gradient(circle, transparent 0 58%, #000 59% 72%, transparent 73%);
  mask-image: radial-gradient(circle, transparent 0 58%, #000 59% 72%, transparent 73%);
  animation: particle-orbit 22s linear infinite;
}
.hero-cat { position: relative; z-index: 1; width: 100%; height: auto; pointer-events: none; user-select: none; opacity: .9; animation: sketch-float 5.8s ease-in-out infinite alternate; }
.hero-cat-scene-music { --halo: 122,105,255; width: clamp(100px, 10vw, 150px); left: 3vw; top: 17%; rotate: -6deg; }
.hero-cat-scene-coffee { --halo: 255,128,108; width: clamp(140px, 15vw, 225px); left: 1.5vw; top: 57%; rotate: -3deg; }
.hero-cat-scene-tall { --halo: 133,191,92; width: clamp(105px, 11vw, 165px); right: 3vw; bottom: 22%; rotate: 4deg; }
.hero-cat-coffee { animation-delay: -1.1s; }
.hero-cat-tall { animation-delay: -3.4s; }
@keyframes particle-orbit { to { transform: rotate(360deg); } }
@media (max-width: 1100px) {
  .hero-cat { opacity: .7; }
  .hero-cat-scene-coffee { left: -3vw; }
  .hero-cat-scene-tall { right: -2vw; }
}
@media (max-width: 800px) {
  .hero-cat-scene-coffee, .hero-cat-scene-tall { display: none; }
  .hero-cat-scene-music { left: -14px; top: 13%; }
}
@media (max-width: 520px) {
  .hero-cat { opacity: .4; }
}
@media (prefers-reduced-motion: reduce) { .hero-cat, .hero-cat-scene::after { animation: none; } }