/* GNR project page. One stylesheet, no dependencies.
   Premium-minimal system: one sans family (Inter) at a large scale, generous white space, neutral palette
   with ONE accent (deep blue). Chart roles: GNR = accent, MPC = neutral context grey, IK = light grey. */

@font-face{font-family:Inter;src:url('../fonts/inter-latin.woff2') format('woff2');font-style:normal;font-weight:400 700;font-display:swap}

:root{
  --sans:Inter,system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --paper:#ffffff; --band:#f6f6f7; --line:#e8e8ea; --line-2:#d5d6da;
  --ink:#0b0c0e; --text:#1d1f23; --body:#3c4043; --muted:#5f6368; --faint:#6b7075;
  --accent:#2f5bea; --accent-soft:#eef2fe; --accent-ink:#1f45c4; --ctx:#8a9099; --ik:#c3c7cd;
  --ok-bg:#eef2fe; --ok-ink:#1f45c4; --no-bg:#f1f1f3; --no-ink:#3c4043;
  --link:#2f5bea; --focus:#2f5bea;
  --screen:#000;
  --r:18px; --r-s:12px;
  --wrap:1200px; --text-w:760px; --nav-h:58px;
  --ease:cubic-bezier(.2,.8,.2,1);
  --shadow:0 1px 2px rgba(0,0,0,.04),0 12px 32px rgba(0,0,0,.06);
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root{
    --paper:#0b0c0e; --band:#121316; --line:#232529; --line-2:#33363c;
    --ink:#f5f6f7; --text:#e8eaed; --body:#c4c7cc; --muted:#9aa0a6; --faint:#7c828a;
    --accent:#5b82f0; --accent-soft:#151c31; --accent-ink:#8fa9ff; --ctx:#6f757e; --ik:#474b52;
    --ok-bg:#16203d; --ok-ink:#b9caff; --no-bg:#1d1f23; --no-ink:#d0d3d8;
    --link:#8fa9ff; --focus:#8fa9ff; --shadow:0 1px 2px rgba(0,0,0,.4),0 12px 32px rgba(0,0,0,.35);
    color-scheme:dark;
  }
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 20px);-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--text);font:400 17px/1.7 var(--sans);font-feature-settings:'cv11','ss01';-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden;counter-reset:fig tab}
img,video,svg{display:block;max-width:100%}
a{color:var(--link);text-underline-offset:3px;text-decoration-thickness:1px}
a:hover{text-decoration-thickness:2px}
button{font:inherit}
:focus-visible{outline:2px solid var(--focus);outline-offset:3px;border-radius:4px}
sup{line-height:0}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 32px}
.wrap--text{max-width:var(--text-w)}
.wrap .wrap--text{padding:0}
.skip{position:absolute;left:12px;top:-60px;z-index:200;padding:10px 14px;border-radius:8px;background:var(--ink);color:var(--paper);font-weight:600;text-decoration:none}
.skip:focus{top:12px}
html[data-site-mode="preview"] .skip{display:none}
.linkbtn{padding:0;border:0;background:none;color:var(--link);text-decoration:underline;text-underline-offset:3px;cursor:pointer}
.eyebrow{margin:0 0 18px;color:var(--muted);font-size:.75rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase}

/* ---------- nav (appears after the hero) ---------- */
.nav{position:fixed;inset:0 0 auto;z-index:80;height:var(--nav-h);background:color-mix(in srgb,var(--paper) 82%,transparent);-webkit-backdrop-filter:saturate(1.6) blur(18px);backdrop-filter:saturate(1.6) blur(18px);border-bottom:1px solid var(--line);transform:translateY(-102%);transition:transform .4s var(--ease)}
.nav.is-shown,.nav:focus-within{transform:none}
.is-film-pinned .nav:not(:focus-within){transform:translateY(-102%)}
.nav::after{content:'';position:absolute;left:0;right:0;bottom:-1px;height:1.5px;transform-origin:left;transform:scaleX(var(--progress,0));background:var(--ink)}
.nav__in{max-width:var(--wrap);height:100%;margin:0 auto;padding:0 32px;display:flex;align-items:center;gap:18px}
.nav__brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font-weight:700;letter-spacing:-.01em}
.nav__brand svg{flex:none}
.nav__links{display:flex;gap:2px;margin-left:auto}
.nav__links a{position:relative;padding:7px 12px;border-radius:999px;color:var(--muted);font-size:.85rem;font-weight:500;text-decoration:none;transition:color .2s,background .2s}
.nav__links a:hover{color:var(--ink);background:var(--band)}
.nav__links a.on{color:var(--ink);background:var(--band)}
.nav__paper{padding:7px 16px;border-radius:999px;background:var(--ink);color:var(--paper);font-size:.8rem;font-weight:600;text-decoration:none}
.nav__toggle{display:none}
html[data-site-mode="preview"] .nav{display:none}

/* ---------- hero: background video (precision tasks | HOT3D diversity wall) under a centre-weighted shade ---------- */
.hero{position:relative;isolation:isolate;overflow:hidden;min-height:100svh;display:flex;flex-direction:column;justify-content:center;padding:96px 32px 28px;text-align:center;background:#0b0c0e;color:#f5f6f7}
.hero__stage{position:absolute;inset:0;z-index:-1;pointer-events:none}
.hero__media{position:absolute;inset:0;z-index:0;pointer-events:none}
.hero__media img,.hero__media video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero__media video{opacity:0;transition:opacity 1.2s}
.hero__media video.is-playing{opacity:1}
.hero__stage::after{content:'';position:absolute;inset:0;z-index:1;pointer-events:none;background:radial-gradient(ellipse 46% 58% at 50% 52%,rgba(11,12,14,.86),rgba(11,12,14,.74) 55%,rgba(11,12,14,.5) 100%),radial-gradient(ellipse 120% 100% at 50% 50%,transparent 55%,rgba(11,12,14,.55))}
.hero__in{max-width:1100px;margin:auto;width:100%;container:hero / inline-size}
/* Axis labels over the two halves of the background (precision tasks left, diversity wall right). */
.hero__axes{position:absolute;inset:0;z-index:2;pointer-events:none;visibility:hidden}
.hero__axes.is-placed{visibility:visible}
.hero__axis{position:absolute;top:28px;display:flex;flex-direction:column;gap:6px;margin:0;text-transform:uppercase;line-height:1.2;text-align:left;text-shadow:0 1px 12px rgba(0,0,0,.65)}
.hero__axis::before{content:'';width:22px;height:1.5px;margin-bottom:4px;background:rgba(255,255,255,.75)}
.hero__axis b{font-size:.76rem;font-weight:650;letter-spacing:.2em;color:#fff}
.hero__axis span{font-size:.68rem;font-weight:500;letter-spacing:.16em;color:rgba(245,246,247,.92)}
.hero__axis--l span{text-transform:none}
.hero__axis--l{left:32px}
.hero__axis--r{right:32px}
.hero__axis.is-right{text-align:right;align-items:flex-end}
.eyebrow--hero{display:inline-flex;gap:10px;margin-bottom:28px;color:rgba(245,246,247,.86)}
.eyebrow--hero a{color:inherit;text-decoration:none}
.eyebrow--hero a:hover{color:#fff}
/* One line wherever the title box is >= 600px wide: the name is 13.5em wide (Inter 650, -.04em), so 6.9cqi fills ~93% of the box.
   The vw value is the fallback for browsers without container units. No nowrap: a wider fallback font wraps instead of clipping. */
.hero__title{margin:0 auto 30px;font-size:clamp(2.6rem,calc((100vw - 64px) / 14.5),4.9rem);font-size:clamp(2.6rem,6.9cqi,4.9rem);font-weight:650;letter-spacing:-.04em;line-height:1.02;color:#fff;text-wrap:balance}
/* Narrow boxes (phones): two lines, "Generative Neural" (8.1em) / "Retargeting", sized so the first line fits. */
@container hero (max-width:600px){.hero__title{font-size:clamp(1.9rem,11.5cqi,2.6rem)}}
/* G, N, R stand out by weight and brightness, not colour: the rest of the name is lighter and slightly dimmed. */
.hero__name{font-weight:500;color:rgba(255,255,255,.76)}
.hero__ini{font-weight:800;color:#fff}
.hero__sub{display:block;margin-top:18px;font-size:clamp(1.1rem,2vw,1.55rem);font-weight:400;letter-spacing:-.015em;color:rgba(245,246,247,.78)}
.authors{display:flex;flex-wrap:wrap;justify-content:center;gap:6px 22px;max-width:920px;margin:0 auto 24px;font-size:1rem}
.author{white-space:nowrap}
.author a{color:#f5f6f7;text-decoration:none;background:linear-gradient(currentColor,currentColor) 0 100%/0 1px no-repeat;transition:background-size .3s var(--ease)}
.author a:hover{background-size:100% 1px}
.author sup{margin-left:2px;font-size:.66em;color:rgba(245,246,247,.6)}
.author sup i{font-style:normal;margin-left:1px}
.affils{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:12px 32px;max-width:1120px;margin:0 auto 14px;padding:0;list-style:none}
.affil a{position:relative;display:flex;flex-direction:column;align-items:center;gap:4px;padding:6px 4px;color:rgba(245,246,247,.88);text-decoration:none}
/* Logos: inline SVG (scripts/inline_logos.py; provenance in assets/logos/SOURCES.md), monochrome white. */
.affil .logo{display:block;height:28px;width:auto;max-width:160px;filter:brightness(0) invert(1);opacity:.9;transition:opacity .2s}
.affil .logo--meta{height:20px;width:92px}.affil .logo--cmu{height:36px}.affil .logo--uc-davis{height:26px}.affil .logo--unc{height:48px;max-width:none}
.affil a:hover .logo{opacity:1}
.affil sup{position:absolute;left:-9px;top:3px;font-size:.6rem;color:rgba(245,246,247,.55)}
.affil__label{font-size:.6rem;letter-spacing:.02em}
.hero__fn{display:flex;flex-wrap:wrap;justify-content:center;gap:4px 18px;margin:0 auto 30px;color:rgba(245,246,247,.84);font-size:.82rem}
.hero__fn a{color:rgba(245,246,247,.95)}
.links{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin:0}
.pill{display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 20px;border-radius:999px;border:1px solid rgba(245,246,247,.28);background:transparent;color:#f5f6f7;font-size:.9rem;font-weight:600;text-decoration:none;transition:background .2s,border-color .2s,color .2s}
.pill svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.pill:hover{background:rgba(245,246,247,.1);border-color:rgba(245,246,247,.55)}
.pill--primary{background:#f5f6f7;color:#0b0c0e;border-color:#f5f6f7}
.pill--primary:hover{background:#fff;color:#0b0c0e}
.pill--soon{color:rgba(245,246,247,.55);cursor:default}
.pill--soon:hover{background:transparent;border-color:rgba(245,246,247,.28)}
.pill--soon small{font-size:.62rem;letter-spacing:.08em;text-transform:uppercase;border:1px solid rgba(245,246,247,.3);border-radius:999px;padding:1px 6px}
html[data-site-mode="preview"] .pill--full{display:none!important}
.hero__soon{margin:30px 0 0;color:rgba(245,246,247,.78);font-size:1.1rem}
.hero__soon span{font-weight:600;color:#fff}
html[data-site-mode="full"] .hero__soon{display:none}
.hero__bottom{position:relative;display:flex;justify-content:center;width:100%;margin-top:22px}
.hero__scroll{display:inline-flex;flex-direction:column;align-items:center;gap:8px;color:rgba(245,246,247,.6);font-size:.68rem;letter-spacing:.2em;text-transform:uppercase;text-decoration:none}
.hero__scroll i{width:1px;height:34px;background:linear-gradient(rgba(245,246,247,.7),transparent);animation:scrollcue 2.4s var(--ease) infinite}
@keyframes scrollcue{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}51%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}
html[data-site-mode="preview"] .hero__scroll{visibility:hidden}
/* Pause control: keyboard reachable, visible only when focused. */
.hero__pause{position:absolute;right:0;bottom:0;padding:8px 14px;border:1px solid rgba(245,246,247,.4);border-radius:999px;background:rgba(11,12,14,.6);color:#f5f6f7;font-size:.78rem;cursor:pointer;clip-path:inset(50%);width:1px;height:1px;overflow:hidden;white-space:nowrap}
.hero__pause:focus,.hero__pause:focus-visible{clip-path:none;width:auto;height:auto}
.hero :focus-visible{outline-color:#fff}

/* ---------- sections ---------- */
main{display:block}
.intro{padding:150px 0 40px}
.intro__text{max-width:980px;margin:0;font-size:clamp(1.6rem,3.1vw,2.5rem);font-weight:600;line-height:1.22;letter-spacing:-.03em;color:var(--ink);text-wrap:balance}
.intro__subtitle{max-width:900px;margin:20px 0 64px;font-size:clamp(1.05rem,1.65vw,1.3rem);font-weight:400;line-height:1.6;color:var(--body);text-wrap:pretty}
.intro__subtitle strong{font-weight:600;color:var(--text)}
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:32px;margin:0}
.stat{padding-top:20px;border-top:1px solid var(--line)}
.stat dt{min-height:2.7em;margin:0 0 10px;color:var(--muted);font-size:.75rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase}
.stat dd{margin:0}
.stat dd b{display:block;font-size:clamp(2.4rem,4vw,3.4rem);font-weight:650;line-height:1;letter-spacing:-.045em;color:var(--ink);font-variant-numeric:tabular-nums}
.stat dd span{display:block;margin-top:10px;color:var(--muted);font-size:.9rem;line-height:1.5}
.sec{padding:160px 0 0}
.sec--tint{margin-top:160px;padding:120px 0 128px;background:var(--band)}
.sec__head{margin-bottom:56px}
.sec__title{margin:0 0 20px;font-size:clamp(2.1rem,4.6vw,3.5rem);font-weight:650;line-height:1.06;letter-spacing:-.04em;color:var(--ink);text-wrap:balance}
.lead{margin:0;color:var(--body);font-size:1.15rem;line-height:1.65;text-wrap:pretty}
.sub{margin:96px 0 24px;font-size:clamp(1.5rem,2.6vw,2rem);font-weight:650;letter-spacing:-.03em;color:var(--ink)}
.prose{max-width:var(--text-w);margin:0 0 28px;color:var(--body);text-wrap:pretty}
.note{max-width:var(--text-w);margin:28px 0 0;color:var(--muted);font-size:.95rem;text-wrap:pretty}
.abstract p{margin:0;color:var(--body);font-size:1.12rem;line-height:1.8;text-wrap:pretty}

/* ---------- cinematic film section ---------- */
.filmsec{position:relative;margin-top:120px}
.filmsec__pin{position:relative}
.filmsec__sticky{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center}
.filmsec__head{text-align:center;margin:0 0 36px;padding:0 24px}
.filmsec__title{margin:0;font-size:clamp(2rem,4.4vw,3.4rem);font-weight:650;letter-spacing:-.04em;line-height:1.05;color:var(--ink)}
.film__stage{position:relative;width:min(1200px,calc(100vw - 64px))}
.filmsec.is-cinematic .filmsec__pin{height:230vh}
.filmsec.is-cinematic .filmsec__sticky{position:sticky;top:0;height:100vh;overflow:hidden}
.filmsec.is-cinematic .filmsec__head{position:absolute;top:max(24px,calc(50vh - .36 * (min(56.25vw,calc(100vh - 100px)) + 46px) - 72px));left:0;right:0;margin:0;opacity:calc(1 - var(--p,0) * 3)}
/* Full size = the largest 16:9 frame that fits the viewport with the chapter row below it (no pillarboxing, no nav overlap). */
.filmsec.is-cinematic .film__stage{width:min(100vw,calc((100vh - 100px) * 16 / 9));transform:translateY(calc(var(--ty,40) * 1px)) scale(var(--s,.72));transform-origin:center center;will-change:transform}
.filmsec.is-cinematic .player__box{border-radius:calc(var(--r) / var(--s,.72))}
.filmsec__foot{margin-top:28px;text-align:center;color:var(--muted);font-size:.88rem}
.filmsec__foot a{color:var(--muted)}
.player{position:relative;outline:none;container-type:inline-size}
.player__box{position:relative;aspect-ratio:16/9;border-radius:var(--r);overflow:hidden;background:var(--screen);user-select:none;-webkit-user-select:none;box-shadow:0 40px 120px -40px rgba(0,0,0,.35)}
.player__poster,.player__video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;background:var(--screen)}
.player__video{object-fit:contain}
.player__poster{z-index:1;transition:opacity .6s}
.player.has-frames .player__poster{opacity:0;pointer-events:none}
.player__big{position:absolute;inset:0;z-index:2;display:flex;align-items:flex-end;justify-content:flex-start;gap:16px;width:100%;padding:0 0 28px 32px;border:0;background:linear-gradient(180deg,transparent 55%,rgba(0,0,0,.55));color:#fff;cursor:pointer}
.player__big-icon{position:relative;flex:none;width:68px;height:68px;border-radius:50%;background:#fff;transition:transform .25s var(--ease)}
.player__big-icon::before{content:'';position:absolute;left:27px;top:21px;border-style:solid;border-width:13px 0 13px 21px;border-color:transparent transparent transparent #000}
.player__big-label{display:flex;flex-direction:column;margin-bottom:12px;text-align:left}
.player__big-label b{font-size:1.05rem;font-weight:600}
.player__big-label small{font-size:.82rem;opacity:.75}
.player__big:hover .player__big-icon{transform:scale(1.06)}
.player.is-started .player__big,.player.is-auto .player__big{display:none}
.player__sound{position:absolute;right:24px;top:24px;z-index:4;display:inline-flex;align-items:center;gap:8px;height:42px;padding:0 18px;border:0;border-radius:999px;background:rgba(255,255,255,.94);color:#000;font-size:.88rem;font-weight:600;cursor:pointer;box-shadow:0 8px 30px rgba(0,0,0,.25);transition:transform .2s var(--ease)}
.player__sound:hover{transform:translateY(-1px)}
.player__sound[hidden]{display:none}
.player__sound .i-vol{color:#000;clip-path:polygon(0 30%,30% 30%,60% 0,60% 100%,30% 70%,0 70%)}
.player__bar{position:absolute;z-index:3;left:0;right:0;bottom:0;padding:28px 18px 10px;background:linear-gradient(transparent,rgba(0,0,0,.75));color:#fff;opacity:0;transform:translateY(8px);transition:opacity .3s,transform .3s}
.player.is-started:hover .player__bar,.player.is-started:focus-within .player__bar,.player.is-started.is-awake .player__bar,.player.is-started:not(.is-playing) .player__bar{opacity:1;transform:none}
.player.is-idle.is-playing .player__box{cursor:none}
/* Chapter chips sit below the frame, never over the film's burned-in captions. */
.player__chapters{display:flex;gap:6px;margin:14px 0 0;padding:2px;list-style:none;overflow-x:auto;scrollbar-width:none}
.player__chapters::-webkit-scrollbar{display:none}
.player__chapters li:first-child{margin-left:auto}.player__chapters li:last-child{margin-right:auto}
.player__chapters button{display:inline-flex;gap:8px;align-items:baseline;padding:6px 12px;border:1px solid var(--line-2);border-radius:999px;background:var(--paper);color:var(--muted);font-size:.78rem;white-space:nowrap;cursor:pointer;transition:background .2s,color .2s,border-color .2s}
.player__chapters button:hover{color:var(--ink);border-color:var(--ink)}
.player__chapters button time{font-family:var(--mono);font-size:.72rem}
.player__chapters button[aria-current="true"]{background:var(--ink);color:var(--paper);border-color:var(--ink)}
@container (max-width:1180px){.player__chapters time{display:none}}
.player__track{position:relative;height:18px;margin:0 2px 4px;cursor:pointer;touch-action:none}
.player__segs{position:absolute;left:0;right:0;top:7px;height:4px;display:flex;gap:3px;transition:top .15s,height .15s}
.player__track:hover .player__segs,.player__track:focus-visible .player__segs{top:5px;height:8px}
.player__seg{position:relative;flex:var(--w) 1 0;height:100%;border-radius:3px;background:rgba(255,255,255,.28);overflow:hidden}
.player__seg i{position:absolute;inset:0;transform-origin:left;transform:scaleX(var(--p,0));background:#fff}
.player__seg b{position:absolute;inset:0;transform-origin:left;transform:scaleX(var(--b,0));background:rgba(255,255,255,.2)}
.player__tip{position:absolute;bottom:22px;transform:translateX(-50%);padding:5px 9px;border-radius:7px;background:rgba(0,0,0,.9);color:#fff;font-size:.76rem;white-space:nowrap;pointer-events:none}
.player__tip time{margin-right:6px;font-family:var(--mono);opacity:.7}
.player__ctrls{display:flex;align-items:center;gap:2px}
.pbtn{position:relative;display:inline-flex;align-items:center;justify-content:center;min-width:38px;height:36px;padding:0 8px;border:0;border-radius:8px;background:none;color:#fff;cursor:pointer;font-size:.86rem;font-weight:600}
.pbtn:hover{background:rgba(255,255,255,.12)}
.pbtn[hidden]{display:none}
.player__time{margin:0 8px;font:500 .8rem var(--mono);font-variant-numeric:tabular-nums;white-space:nowrap;opacity:.9}
.player__chap{overflow:hidden;font-size:.82rem;white-space:nowrap;text-overflow:ellipsis;min-width:0;opacity:.75}
.player__sp{flex:1}
.player__menu{position:relative}
.player__qlist{position:absolute;right:0;bottom:42px;margin:0;padding:6px;list-style:none;border-radius:10px;background:rgba(0,0,0,.92)}
.player__qlist button{position:relative;display:block;width:100%;padding:7px 16px 7px 26px;border:0;border-radius:6px;background:none;color:#fff;text-align:left;cursor:pointer;font-size:.84rem;white-space:nowrap}
.player__qlist button:hover{background:rgba(255,255,255,.1)}
.player__qlist button[aria-checked="true"]::before{content:'';position:absolute;left:10px;top:50%;width:6px;height:6px;margin-top:-3px;border-radius:50%;background:#fff}
.player__toast{position:absolute;z-index:4;left:50%;top:50%;transform:translate(-50%,-50%);padding:10px 16px;border-radius:10px;background:rgba(0,0,0,.7);color:#fff;font-weight:600;opacity:0;transition:opacity .2s;pointer-events:none}
.player__toast.is-on{opacity:1}
.player__keys{position:absolute;z-index:5;right:14px;bottom:110px;width:260px;padding:14px 16px;border-radius:12px;background:rgba(0,0,0,.92);color:#eee;font-size:.8rem;line-height:1.5}
.player__keys[hidden]{display:none}
.player__keys p{margin:0 0 6px}
.player__keys dl{display:grid;grid-template-columns:auto 1fr;gap:3px 12px;margin:0}
.player__keys dt{font-family:var(--mono);opacity:.75}
.player__keys dd{margin:0}
.player:fullscreen{background:#000;display:flex;align-items:center}
.player:fullscreen .player__chapters{display:none}
.player:fullscreen .player__box{width:100%;height:100%;aspect-ratio:auto;border-radius:0}
.i-play{width:12px;height:14px;background:currentColor;clip-path:polygon(0 0,100% 50%,0 100%)}
.is-playing .i-play,.i-play.is-pause{clip-path:polygon(0 0,35% 0,35% 100%,0 100%,0 0,65% 0,100% 0,100% 100%,65% 100%,65% 0)}
.i-back,.i-fwd{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;border:2px solid currentColor;border-radius:50%;font-size:.55rem;font-weight:700;border-top-color:transparent}
.i-back{transform:rotate(-30deg)}.i-fwd{transform:rotate(30deg)}
.i-vol{width:16px;height:14px;background:currentColor;clip-path:polygon(0 30%,30% 30%,60% 0,60% 100%,30% 70%,0 70%,0 30%,72% 25%,82% 18%,96% 50%,82% 82%,72% 75%,84% 50%,72% 25%)}
.is-muted .player__ctrls .i-vol{clip-path:polygon(0 30%,30% 30%,60% 0,60% 100%,30% 70%,0 70%)}
.i-pip{position:relative;width:18px;height:14px;border:2px solid currentColor;border-radius:3px}
.i-pip::after{content:'';position:absolute;right:1px;bottom:1px;width:7px;height:5px;background:currentColor;border-radius:1px}
.i-fs{width:16px;height:16px;background:linear-gradient(currentColor,currentColor) 0 0/6px 2px no-repeat,linear-gradient(currentColor,currentColor) 0 0/2px 6px no-repeat,linear-gradient(currentColor,currentColor) 100% 0/6px 2px no-repeat,linear-gradient(currentColor,currentColor) 100% 0/2px 6px no-repeat,linear-gradient(currentColor,currentColor) 0 100%/6px 2px no-repeat,linear-gradient(currentColor,currentColor) 0 100%/2px 6px no-repeat,linear-gradient(currentColor,currentColor) 100% 100%/6px 2px no-repeat,linear-gradient(currentColor,currentColor) 100% 100%/2px 6px no-repeat}
.i-restart{position:relative;width:16px;height:16px;border:2px solid currentColor;border-radius:50%;border-left-color:transparent}
.i-restart::after{content:'';position:absolute;left:-4px;top:-1px;border-style:solid;border-width:4px 4px 4px 0;border-color:transparent currentColor transparent transparent;transform:rotate(-40deg)}

/* ---------- figures ---------- */
.pfig{margin:64px 0 0}
.pfig img{width:100%;height:auto;border-radius:8px;background:#fff}
.pfig picture{display:block}
.pfig figcaption,.tbl figcaption{margin-top:16px;max-width:var(--text-w);color:var(--muted);font-size:.9rem;line-height:1.6;text-wrap:pretty}
.pfig figcaption b,.tbl figcaption b{color:var(--text);font-weight:600}
.pfig>figcaption::before{counter-increment:fig;content:'Figure ' counter(fig) '. ';font-weight:600;color:var(--text)}
.tbl>figcaption::before{counter-increment:tab;content:'Table ' counter(tab) '. ';font-weight:600;color:var(--text)}
.figure-link{position:relative;display:block;width:100%;padding:16px;border:1px solid var(--line);border-radius:var(--r);background:#fff;cursor:zoom-in;line-height:0;transition:box-shadow .3s,transform .3s var(--ease)}
.figure-link:hover{box-shadow:var(--shadow);transform:translateY(-2px)}
.figure-link__hint{position:absolute;right:14px;bottom:14px;display:flex;align-items:center;gap:6px;padding:7px 10px;border-radius:999px;background:rgba(11,12,14,.85);color:#fff;font:500 .72rem/1 var(--sans);opacity:0;transition:opacity .2s;pointer-events:none}
.figure-link__hint svg{width:13px;height:13px}
.figure-link:hover .figure-link__hint,.figure-link:focus-visible .figure-link__hint{opacity:1}
@media (hover:none){.figure-link__hint{opacity:.9}.figure-link__hint span{display:none}}
.scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
.paperfigs{margin-top:120px;padding-top:48px;border-top:1px solid var(--line)}
.paperfigs__grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px 28px}
.paperfigs .pfig{margin:0}
.paperfigs .figure-link{padding:10px}
.paperfigs .pfig figcaption{font-size:.82rem}

/* ---------- method ---------- */
.axes{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:64px;align-items:center;margin-top:96px}
.axes h3{margin:0 0 12px;font-size:1.6rem;font-weight:650;letter-spacing:-.03em;color:var(--ink)}
.axes p{margin:0;color:var(--body);text-wrap:pretty}
.axes p b{color:var(--ink)}
.cost{display:grid;grid-template-columns:1fr 1fr;gap:6px 24px}
.cost__plot{margin:0}
.cost__plot figcaption{margin:0 0 2px 28px;font-size:.85rem;font-weight:600}
.cost__plot svg{width:100%;height:auto}
.cost__plot .axis{fill:none;stroke:var(--faint);stroke-width:1.3;stroke-linecap:round;stroke-linejoin:round}
.cost__plot .curve{fill:none;stroke:var(--ink);stroke-width:2.4;stroke-linecap:round;stroke-dasharray:320;stroke-dashoffset:0}
.cost__plot .clabel{fill:var(--ink);font:600 11px var(--sans)}
.cost__plot .alabel{fill:var(--faint);font:10px var(--sans)}
.cost__note{grid-column:1/-1;margin:0 0 0 28px;color:var(--faint);font-size:.78rem}
.stepper{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.4fr);gap:40px;align-items:start}
.stepper__list{display:grid;gap:4px;margin:0;padding:0;list-style:none}
.stepper__btn{display:grid;grid-template-columns:34px 1fr;gap:14px;width:100%;padding:14px 16px;border:0;border-radius:14px;background:none;color:var(--text);text-align:left;cursor:pointer;transition:background .25s}
.stepper__btn:hover{background:var(--band)}
.stepper__n{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:50%;border:1px solid var(--line-2);color:var(--muted);font-weight:600;font-size:.85rem;transition:all .25s}
.stepper__txt b{display:block;font-size:1rem;font-weight:600;line-height:1.4;color:var(--ink)}
.stepper__txt>span{display:block;max-height:0;overflow:hidden;color:var(--body);font-size:.92rem;line-height:1.6;opacity:0;transition:max-height .45s var(--ease),opacity .3s,margin .3s}
.stepper__btn[aria-selected="true"]{background:var(--band)}
.stepper__btn[aria-selected="true"] .stepper__n{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.stepper__btn[aria-selected="true"] .stepper__txt>span{max-height:12em;opacity:1;margin-top:6px}
.stepper__panel{position:sticky;top:calc(var(--nav-h) + 24px)}
.stepper__screen{position:relative;aspect-ratio:16/9;border-radius:var(--r);overflow:hidden;background:var(--screen);cursor:pointer}
.stepper__poster,.stepper__video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.stepper__video{opacity:0;transition:opacity .35s}
.stepper.is-playing .stepper__video{opacity:1}
.stepper__prog{position:absolute;left:0;right:0;bottom:0;height:3px;background:rgba(255,255,255,.15)}
.stepper__prog i{position:absolute;inset:0;transform-origin:left;transform:scaleX(0);background:#fff}
.stepper__meta{margin:12px 0 0;color:var(--muted);font-size:.85rem}
.stepper:not([data-ready]) .stepper__txt>span{max-height:none;opacity:1;margin-top:6px}
.eq{display:flex;flex-wrap:wrap;justify-content:center;align-items:baseline;gap:6px 18px;margin:48px 0 0;padding:26px 28px;border-radius:var(--r);background:var(--band);font-size:1.2rem;color:var(--ink)}
.eq sub{font-size:.66em}
.eq__sep{margin-left:-14px}
.hat{position:relative;display:inline-block}
.hat::after{content:'^';position:absolute;left:0;right:0;top:-.42em;text-align:center;font-style:normal;font-size:.8em}

/* ---------- results: one claim per block ---------- */
.claim{padding:96px 0 0;margin-top:96px;border-top:1px solid var(--line)}
.claim:first-of-type{margin-top:0;border-top:0;padding-top:0}
.claim__head{display:grid;grid-template-columns:72px minmax(0,1fr);gap:8px 24px;max-width:1000px;margin-bottom:40px}
.claim__n{margin:8px 0 0;color:var(--faint);font:600 .9rem var(--mono)}
.claim__title{margin:0 0 14px;font-size:clamp(1.7rem,3.2vw,2.5rem);font-weight:650;letter-spacing:-.035em;line-height:1.1;color:var(--ink);text-wrap:balance}
.claim__text{margin:0;max-width:var(--text-w);color:var(--body);text-wrap:pretty}
.claim__text b{color:var(--ink)}
.claim__foot{max-width:var(--text-w);margin:32px 0 0;color:var(--body);font-size:.95rem}
.kpis{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px;margin:0 0 40px}
.kpi{padding:28px 28px 26px;border-radius:var(--r);background:var(--band)}
.kpi b{display:block;font-size:clamp(2rem,3.4vw,2.8rem);font-weight:650;letter-spacing:-.04em;line-height:1.05;color:var(--ink);font-variant-numeric:tabular-nums}
.kpi span{display:block;margin-top:12px;color:var(--body);font-size:.92rem;line-height:1.55}
.kpi:first-child b{color:var(--accent)}

/* charts: plain HTML; text wears ink tokens, marks carry identity (GNR accent, MPC context grey) */
.chart{margin:0;padding:32px;border:1px solid var(--line);border-radius:var(--r)}
.chart__cap{margin:0 0 26px;color:var(--muted);font-size:.9rem;line-height:1.55}
.chart__cap b{color:var(--ink);font-weight:600}
.chart__note{margin:20px 0 0;color:var(--muted);font-size:.85rem}
.chart__big{margin:18px 0 0;font-size:2rem;font-weight:650;letter-spacing:-.04em;color:var(--ink)}
.chartgrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.key{display:inline-flex;align-items:center;gap:6px;margin-left:14px;color:var(--text);font-size:.82rem;white-space:nowrap}
.key__dot{display:inline-block;width:10px;height:10px;border-radius:50%}
.key__dot--a{background:var(--paper);border:2px solid var(--ctx)}
.key__dot--b{background:var(--accent)}
.dumbbell{display:grid;gap:26px;padding:10px 8px 0 0}
.db{display:grid;grid-template-columns:150px minmax(0,1fr);align-items:center;gap:20px}
.db__label{color:var(--text);font-size:.92rem;font-weight:500}
.db__track{position:relative;height:30px;background:linear-gradient(90deg,var(--line) 1px,transparent 1px) 0 0/25% 100%;border-right:1px solid var(--line)}
.db__line{position:absolute;top:14px;height:2px;left:calc(var(--a) * 1%);width:calc((var(--b) - var(--a)) * 1%);background:var(--accent);opacity:.4}
.db__dot{position:absolute;top:9px;width:12px;height:12px;margin-left:-6px;border-radius:50%;box-shadow:0 0 0 2px var(--paper)}
.db__dot--a{left:calc(var(--a) * 1%);background:var(--paper);border:2px solid var(--ctx)}
.db__dot--b{left:calc(var(--b) * 1%);background:var(--accent)}
.db em{position:absolute;top:-14px;font-style:normal;font-size:.78rem;font-variant-numeric:tabular-nums;color:var(--muted);transform:translateX(-50%)}
.db__va{left:calc(var(--a) * 1%)}
.db em.db__vb{left:calc(var(--b) * 1%);color:var(--ink);font-weight:600}
.db__axis{display:flex;justify-content:space-between;margin-left:170px;color:var(--faint);font-size:.72rem;font-variant-numeric:tabular-nums}
.bars{display:grid;gap:14px}
.hb{display:grid;grid-template-columns:minmax(150px,.9fr) minmax(0,1.6fr) auto;align-items:center;gap:16px}
.hb__label{color:var(--text);font-size:.88rem}
.hb__bar{position:relative;height:14px}
.hb__bar i{position:absolute;left:0;top:0;bottom:0;width:calc(var(--v) / var(--max) * 100%);min-width:4px;border-radius:0 4px 4px 0;background:var(--ctx);transform-origin:left;transition:transform 1.1s var(--ease)}
.hb--gnr .hb__bar i{background:var(--accent)}
.hb__val{min-width:5.5em;color:var(--ink);font-size:.9rem;font-weight:600;font-variant-numeric:tabular-nums;text-align:right;line-height:1.25}
.hb__val small{display:block;color:var(--muted);font-size:.74rem;font-weight:500}
.chart:not(.is-in) .hb__bar i{transform:scaleX(0)}
.chart--card{padding:28px}
.chart--card .hb{grid-template-columns:minmax(0,1fr) auto;gap:6px 14px}
.chart--card .hb__label{grid-column:1/-1}
.paper-tables{margin-top:40px}
.paper-tables summary{display:inline-flex;align-items:center;gap:8px;padding:10px 18px;border:1px solid var(--line-2);border-radius:999px;color:var(--text);font-size:.88rem;font-weight:600;cursor:pointer;list-style:none}
.paper-tables summary::-webkit-details-marker{display:none}
.paper-tables summary::after{content:'+';font-weight:400}
.paper-tables[open] summary::after{content:'−'}
.paper-tables[open] summary{margin-bottom:24px}

/* comparison players */
.compare,.studio{margin:48px 0 0;padding:28px;border:1px solid var(--line);border-radius:22px;background:var(--paper)}
.compare[hidden]{display:none}
.compare__head{display:flex;justify-content:space-between;align-items:flex-end;flex-wrap:wrap;gap:16px 28px;margin-bottom:20px}
.compare__head>div:first-child{max-width:600px}
.compare__title{margin:0 0 6px;font-size:1.2rem;font-weight:650;letter-spacing:-.02em;color:var(--ink)}
.compare__sub{margin:0;color:var(--muted);font-size:.9rem;line-height:1.55}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chips button{padding:7px 14px;border:1px solid var(--line-2);border-radius:999px;background:var(--paper);color:var(--muted);font-size:.82rem;font-weight:600;cursor:pointer;transition:all .2s}
.chips button:hover{color:var(--ink);border-color:var(--ink)}
.chips button[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.compare__views{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.view{position:relative;margin:0;min-width:0}
.view__media{position:relative;overflow:hidden;border-radius:var(--r-s);background:#1b1d21;line-height:0}
.view__media video,.view__media img{width:100%;height:100%;object-fit:cover}
.view__media img{position:absolute;inset:0}
.view__media video{position:relative}
.r-1x1{aspect-ratio:1/1}.r-4x3{aspect-ratio:4/3}.r-2x3{aspect-ratio:2/3}.r-16x9{aspect-ratio:16/9}
.view figcaption{display:flex;flex-wrap:wrap;align-items:center;gap:4px 8px;margin-top:10px;font-size:.85rem}
.view__budget{color:var(--muted);font-size:.78rem}
.view__speed{margin-left:auto;padding:1px 7px;border:1px solid var(--line-2);border-radius:999px;color:var(--muted);font:600 .7rem var(--mono);line-height:1.5}
.wipe__speed{position:absolute;right:12px;bottom:12px;z-index:2;padding:2px 8px;border-radius:999px;background:rgba(0,0,0,.72);color:#fff;font:600 .72rem var(--mono);line-height:1.5;pointer-events:none}
.compare__ctrl,.scrub{display:flex;align-items:center;gap:12px;margin-top:16px}
.compare__hint{color:var(--faint);font-size:.8rem}
.cbtn{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border:1px solid var(--line-2);border-radius:50%;background:var(--paper);color:var(--ink);cursor:pointer}
.cbtn:hover{border-color:var(--ink)}
.scrub__range{flex:1;accent-color:var(--ink);height:24px}
.scrub__time{min-width:4.5em;color:var(--faint);font:500 .8rem var(--mono);font-variant-numeric:tabular-nums;text-align:right}
.studio__opts{display:flex;flex-direction:column;align-items:flex-end;gap:10px}
.seg{display:inline-flex;padding:3px;border:1px solid var(--line-2);border-radius:999px}
.seg button{padding:6px 16px;border:0;border-radius:999px;background:none;color:var(--muted);font-size:.82rem;font-weight:600;cursor:pointer}
.seg button[aria-pressed="true"]{background:var(--ink);color:var(--paper)}
.studio__stage{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.studio__stage.is-four{grid-template-columns:repeat(2,minmax(0,1fr));max-width:900px;margin:0 auto}
.studio__stage.is-wipe{grid-template-columns:1fr;justify-items:center;max-width:none}
.studio__note{margin:14px 0 0;color:var(--muted);font-size:.86rem}
.wipe{position:relative;width:100%;max-width:820px;overflow:hidden;border-radius:var(--r-s);background:#1b1d21;line-height:0;cursor:ew-resize}
.wipe.r-2x3{max-width:440px}
.wipe video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.wipe video.wipe__top{clip-path:inset(0 0 0 var(--x,50%))}
.wipe__handle{position:absolute;top:0;bottom:0;left:var(--x,50%);width:2px;margin-left:-1px;background:#fff;pointer-events:none}
.wipe__handle::after{content:'';position:absolute;top:50%;left:50%;width:40px;height:40px;margin:-20px 0 0 -20px;border-radius:50%;background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m9 7-5 5 5 5M15 7l5 5-5 5'/%3E%3C/svg%3E") center/22px no-repeat;box-shadow:0 4px 16px rgba(0,0,0,.35)}
.wipe__lab{position:absolute;top:12px;z-index:2;display:inline-flex;align-items:center;padding:4px 10px;border-radius:999px;background:rgba(0,0,0,.72);color:#fff;font-size:.76rem;font-weight:600;line-height:1.4}
.wipe__lab--l{left:12px}.wipe__lab--r{right:12px}
.wipe__lab .res{margin-left:6px;padding:1px 7px;font-size:.72rem}
.wipe input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:ew-resize}
.studio__wipeopts{display:flex;justify-content:center;gap:18px;margin-top:14px;color:var(--muted);font-size:.86rem}
.studio__wipeopts[hidden]{display:none}
.studio__wipeopts select{margin-left:6px;padding:5px 9px;border:1px solid var(--line-2);border-radius:8px;background:var(--paper);color:var(--text);font:inherit}
.lab{display:inline-flex;align-items:center;gap:7px;font-weight:600;color:var(--text)}
.lab::before{content:'';width:8px;height:8px;border-radius:50%;background:var(--c)}
.lab--human{--c:var(--faint)}.lab--mpc{--c:var(--ctx)}.lab--gnr{--c:var(--accent)}.lab--ik{--c:var(--ik)}
.res{display:inline-flex;align-items:center;gap:4px;margin-left:auto;padding:2px 10px;border-radius:999px;font-size:.8125rem;font-weight:600;line-height:1.4;white-space:nowrap}
.res--ok{background:var(--ok-bg);color:var(--ok-ink)}
.res--no{background:var(--no-bg);color:var(--no-ink)}

/* tables */
.tbl{margin:48px 0 0;min-width:0}
.tbl>figcaption{margin:0 0 16px}
.tbl table{width:100%;border-collapse:collapse;font-size:.92rem;font-variant-numeric:tabular-nums;border-top:1.5px solid var(--ink);border-bottom:1.5px solid var(--ink)}
.tbl th{padding:12px;border-bottom:1px solid var(--ink);color:var(--muted);font-size:.78rem;font-weight:600;text-align:right;white-space:nowrap;vertical-align:bottom}
.tbl td{padding:9px 12px;text-align:right;white-space:nowrap;color:var(--text)}
.tbl th:first-child,.tbl td:first-child{text-align:left}
.tbl tr.ref td{color:var(--muted)}
.tbl tr.ref+tr:not(.ref) td,.tbl tr.gnr--first td{border-top:1px solid var(--line-2)}
.tbl tr.gnr td{background:var(--accent-soft)}
.tbl tr.gnr td:first-child{color:var(--accent-ink);font-weight:600}
.tbl tr.best td{font-weight:700;color:var(--ink)}
.tbl tr.grp td{padding-top:16px;color:var(--muted);font-size:.78rem;font-weight:600;text-align:left}
.tnote{margin:12px 0 0;max-width:var(--text-w);color:var(--faint);font-size:.82rem;line-height:1.55}
.tnote+.tnote{margin-top:4px}
.tables{display:grid;grid-template-columns:1fr;gap:40px}
.tables .tbl{margin-top:0}
.tables .tbl:first-child{max-width:720px}
.tbl .scroll{position:relative}
.tbl .scroll.is-overflow{-webkit-mask-image:linear-gradient(90deg,#000 calc(100% - 48px),transparent);mask-image:linear-gradient(90deg,#000 calc(100% - 48px),transparent)}
.tbl .scroll.is-overflow.at-end{-webkit-mask-image:none;mask-image:none}
.scroll__hint{margin:8px 0 0;color:var(--muted);font-size:.8rem;font-weight:600}
.scroll__hint[hidden]{display:none}
.embody{max-width:var(--text-w)}
.embody .prose{margin-bottom:20px}
.bar{display:grid;grid-template-columns:16em 1fr 3.4em;align-items:center;gap:14px;font-size:.9rem}
.bar span{color:var(--text)}
.bar>i{position:relative;height:12px}
.bar>i::before{content:'';position:absolute;inset:0 auto 0 0;width:calc(var(--v) * 1%);border-radius:0 4px 4px 0;background:var(--accent);transform-origin:left;transition:transform 1.1s var(--ease)}
.bar--ref>i::before{background:var(--ctx)}
.bar b{font-variant-numeric:tabular-nums;color:var(--ink)}
.bars:not(.is-in) .bar>i::before{transform:scaleX(0)}

/* ---------- dataset wall ---------- */
.wall__filters{display:flex;flex-direction:column;gap:10px;margin:0 0 24px}
.wall__filters .chips[hidden]{display:none}
.chips--obj button{font-size:.8rem}
.wall__more{margin:28px 0 0;text-align:center}
.wall__more[hidden]{display:none}
.wall__more .cbtn{width:auto;padding:0 20px;border-radius:999px;font:600 .88rem var(--sans)}
.wall{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-auto-flow:dense;gap:14px;margin:0;padding:0;list-style:none}
.tile--feature{grid-column:span 2;grid-row:span 2}
.tile--wide{grid-column:span 2}
.tile--wide .tile__btn{aspect-ratio:2/1;height:auto}
.tile[hidden]{display:none}
.tile__btn{position:relative;display:block;width:100%;aspect-ratio:1/1;padding:0;border:0;border-radius:var(--r-s);overflow:hidden;background:#1b1d21;cursor:pointer;line-height:0;transition:transform .35s var(--ease),box-shadow .35s}
.tile__btn:hover,.tile__btn:focus-visible{transform:translateY(-3px);box-shadow:var(--shadow)}
.tile__btn img,.tile__btn video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.tile[data-set="nist"] .tile__btn>img,.tile[data-set="nist"] .tile__btn>video{object-position:50% 0}
.tile__btn video{opacity:0;transition:opacity .3s}
.tile.is-playing .tile__btn video{opacity:1}
.tile__pip{position:absolute;right:8px;bottom:38px;z-index:2;width:32%;aspect-ratio:1/1;border-radius:8px;overflow:hidden;box-shadow:0 0 0 2px rgba(255,255,255,.9)}
.tile__pip img{position:static;width:100%;height:100%;object-fit:cover}
.tile__pip video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity .3s}
.tile__pip.is-playing video{opacity:1}
.tile__meta{position:absolute;left:0;right:0;bottom:0;z-index:3;display:flex;align-items:center;justify-content:space-between;gap:6px;padding:24px 12px 10px;background:linear-gradient(transparent,rgba(0,0,0,.72));color:#fff;font-size:.8rem;line-height:1.3;text-align:left}
.tile__meta b{font-weight:600}
.tile__meta span{padding:2px 8px;border-radius:999px;background:rgba(255,255,255,.18);font-size:.66rem;font-weight:600;white-space:nowrap}
.tile--feature .tile__meta{font-size:.95rem;padding:34px 16px 14px}
.lb{width:min(1100px,calc(100% - 32px));max-height:calc(100dvh - 32px);padding:0;border:0;border-radius:22px;background:var(--paper);color:var(--text);box-shadow:0 30px 120px rgba(0,0,0,.5);overflow:auto}
.lb::backdrop{background:rgba(5,6,8,.75);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}
.lb[open]{animation:lb-in .3s var(--ease)}
@keyframes lb-in{from{opacity:0;transform:translateY(12px) scale(.985)}to{opacity:1;transform:none}}
.lb__head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;padding:24px 26px 0}
.lb__head h3{margin:0;font-size:1.5rem;font-weight:650;letter-spacing:-.03em;color:var(--ink)}
.lb__head p{margin:4px 0 0;color:var(--muted);font-size:.88rem}
.lb__acts{display:flex;gap:6px;flex:none}
.lb__body{padding:20px 26px 26px}
.lb__views{display:grid;grid-template-columns:repeat(var(--n,3),minmax(0,1fr));gap:12px}
.lb__meta{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px 18px;margin:18px 0 0;padding:16px 0 0;border-top:1px solid var(--line);font-size:.84rem}
.lb__meta dt{color:var(--faint);font-size:.72rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase}
.lb__meta dd{margin:2px 0 0;color:var(--text)}
html.lb-open{overflow:hidden}

/* ---------- footer ---------- */
.foot{padding:120px 0 80px}
.foot .sec__title{font-size:clamp(1.8rem,3.4vw,2.6rem)}
.bib{position:relative;margin:0 0 32px}
.bib pre{margin:0;padding:24px 26px;border-radius:var(--r);background:var(--band);font:.84rem/1.7 var(--mono);color:var(--text);white-space:pre-wrap;overflow-wrap:anywhere}
.bib button{position:absolute;top:14px;right:14px;height:34px;padding:0 16px;border:1px solid var(--line-2);border-radius:999px;background:var(--paper);color:var(--ink);font:600 .8rem var(--sans);cursor:pointer}
.bib button:hover{border-color:var(--ink)}
.foot__notes p{max-width:var(--text-w);margin:0 0 8px;color:var(--muted);font-size:.9rem}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(24px)}
.reveal.is-in{opacity:1;transform:none;transition:opacity .9s var(--ease),transform .9s var(--ease)}
.cost:not(.is-in) .curve{stroke-dashoffset:320}
.cost.is-in .curve{transition:stroke-dashoffset 1.6s var(--ease)}

/* ---------- responsive ---------- */
@media (min-width:641px) and (max-width:1100px){
  .affils{gap:10px 22px}
  .affil .logo{height:25px}.affil .logo--meta{height:18px;width:80px}.affil .logo--cmu{height:34px}.affil .logo--uc-davis{height:22px}.affil .logo--unc{height:46px}
}
@media (max-width:1040px){
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .axes,.stepper{grid-template-columns:1fr;gap:28px}
  .stepper__panel{position:relative;top:0;order:-1}
  .studio__opts{align-items:flex-start}
  .paperfigs__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .chartgrid{grid-template-columns:1fr}
}
@media (max-width:860px){
  .nav__toggle{display:inline-flex;align-items:center;gap:8px;margin-left:auto;height:36px;padding:0 14px;border:1px solid var(--line-2);border-radius:999px;background:none;color:var(--ink);font:600 .82rem var(--sans);cursor:pointer}
  .nav__links{display:none;position:absolute;top:var(--nav-h);left:0;right:0;flex-direction:column;gap:2px;margin:0;padding:10px 16px 16px;background:var(--paper);border-bottom:1px solid var(--line)}
  .nav--open .nav__links{display:flex}
  .nav__links a{padding:12px;font-size:.95rem;border-radius:10px}
  .nav__paper{display:none}
  .wall{grid-template-columns:repeat(3,minmax(0,1fr))}
  .compare__views{gap:8px}
}
@media (max-width:760px){
  .claim__head{grid-template-columns:1fr}
  .claim__n{margin:0}
  .paperfigs__grid{grid-template-columns:1fr}
}
@media (max-width:640px){
  .hero__stage::after{background:linear-gradient(180deg,rgba(11,12,14,.55),rgba(11,12,14,.8) 14%,rgba(11,12,14,.84) 50%,rgba(11,12,14,.78) 80%,rgba(11,12,14,.6))}
  .hero__axis b{font-size:.66rem}.hero__axis span{font-size:.6rem}
  .hero__bottom{margin-top:84px}
  body{font-size:16px}
  .wrap{padding:0 20px}
  .hero{padding:100px 18px 18px}
  .authors{gap:4px 14px;font-size:.92rem}
  .affils{gap:8px 20px}
  .affil .logo{height:22px}.affil .logo--meta{height:16px;width:72px}.affil .logo--cmu{height:28px}.affil .logo--uc-davis{height:20px}.affil .logo--unc{height:40px}
  .hero__fn{font-size:.76rem;flex-direction:column;gap:2px}
  .pill{height:40px;padding:0 15px;font-size:.86rem}
  .intro{padding-top:96px}
  .intro__subtitle{margin-bottom:44px}
  .stats{gap:20px}
  .sec{padding-top:110px}
  .sec--tint{margin-top:110px;padding:80px 0 88px}
  .filmsec{margin-top:88px}
  .film__stage{width:calc(100vw - 32px)}
  .player__big{justify-content:flex-end;padding:0 12px 12px 0}
  .player__big-icon{width:50px;height:50px}
  .player__big-icon::before{left:20px;top:15px;border-width:10px 0 10px 15px}
  .player__big-label{display:none}
  .player__sound{right:10px;top:10px;height:34px;padding:0 12px;font-size:.78rem}
  .player__bar{padding:24px 6px 4px}
  .player__chapters{margin-top:10px}
  .pbtn{min-width:32px;padding:0 5px}
  .player__chap,[data-act="back"],[data-act="fwd"],[data-act="keys"]{display:none}
  .player__time{margin:0 4px;font-size:.72rem}
  .claim{padding-top:72px;margin-top:72px}
  .compare,.studio{padding:16px;border-radius:16px}
  .chart{padding:20px}
  .db{grid-template-columns:96px minmax(0,1fr);gap:12px}
  .db__axis{margin-left:108px}
  .hb{grid-template-columns:1fr auto;gap:4px 12px}
  .hb__label{grid-column:1/-1}
  .tbl table{font-size:.82rem}
  .tbl th,.tbl td{padding:8px 7px}
  .th-long{display:none}
  .tbl td:first-child,.tbl th:first-child{position:sticky;left:0;z-index:1;background:var(--paper)}
  .tbl tr.gnr td:first-child{background:var(--accent-soft)}
  .bar{grid-template-columns:1fr 3em;gap:4px 10px}
  .bar span{grid-column:1/-1}
  .eq{font-size:1rem;padding:18px}
  .cost__plot .alabel{font-size:13px}.cost__plot .clabel{font-size:12.5px}
  .wall{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
  .tile--feature,.tile--wide{grid-column:auto;grid-row:auto}
  .tile--wide .tile__btn{aspect-ratio:1/1;height:auto}
  .tile--feature .tile__meta,.tile__meta{font-size:.72rem;padding:18px 8px 6px}
  .tile__meta span{font-size:.6rem;padding:1px 5px}
  .lb{width:calc(100% - 12px);border-radius:16px}
  .lb__head,.lb__body{padding-left:14px;padding-right:14px}
}
/* Phones: comparison views stack in one column so each clip is full width. */
@media (max-width:600px){
  .compare__views{grid-template-columns:1fr;gap:16px}
  .compare__views .view:first-child{width:72%;justify-self:center}
  .studio__stage,.studio__stage.is-four{grid-template-columns:1fr;gap:16px}
  .compare__hint{display:none}
}
@media (max-width:640px){.lb__views{grid-template-columns:1fr}}
@media (max-width:380px){.stats{grid-template-columns:1fr}}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  .chart:not(.is-in) .hb__bar i,.bars:not(.is-in) .bar>i::before{transform:none}
  .cost:not(.is-in) .curve{stroke-dashoffset:0}
}
@media print{
  .nav,.hero__media,.filmsec,.stepper__panel,.compare,.studio,.wall,.bib button,.wall__filters{display:none!important}
}

/* ---------- figure gallery dialog (assets/js/gallery.js) ---------- */
.gallery{--gallery-ink:#f1f2f4;width:calc(100% - 48px);max-width:1320px;height:calc(100dvh - 48px);max-height:1000px;padding:0;border:1px solid #2a2c31;border-radius:22px;background:#0b0c0e;color:var(--gallery-ink);box-shadow:0 32px 120px #0007;overflow:hidden}
.gallery[open]{display:flex;flex-direction:column}
.gallery::backdrop{background:rgba(5,6,8,.86);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.gallery__header{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:20px 24px;border-bottom:1px solid #a4bcdf26;flex:none}
.gallery__heading{min-width:0}.gallery__eyebrow{font:500 .62rem Inter,sans-serif;letter-spacing:.16em;text-transform:uppercase;color:#9aa0a6;margin:0 0 6px}.gallery__title{font:650 clamp(1rem,2vw,1.4rem)/1.3 var(--sans);color:#f1f2f4;margin:0;letter-spacing:-.02em}
.gallery__actions{display:flex;gap:8px;flex:none}
.gallery button{font:500 .78rem Inter,sans-serif;color:var(--gallery-ink);cursor:pointer}
.gallery__control{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-width:42px;min-height:42px;padding:10px 14px;border:1px solid #a4bcdf36;border-radius:10px;background:#b5cbff0b;transition:background .2s,border-color .2s,transform .2s}
.gallery__control:hover{background:#b5cbff1c;border-color:#ffffff;transform:translateY(-1px)}
.gallery button:focus-visible{outline:2px solid #ffffff;outline-offset:3px}
.gallery__stage{flex:1;min-height:0;overflow:auto;overscroll-behavior:contain;padding:24px;display:flex;align-items:center;justify-content:center;scrollbar-color:#5f6368 #0b0c0e}
.gallery__image{display:block;max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;background:white;border-radius:10px;box-shadow:0 10px 50px #0004;cursor:zoom-in}
.gallery__stage.is-zoomed{display:block}
.gallery__stage.is-zoomed .gallery__image{width:var(--image-width);max-width:none;max-height:none;margin:0 auto;cursor:zoom-out}
.gallery__footer{margin:0;padding:0 24px 20px;border:0;flex:none}
.gallery__caption{font:.83rem/1.5 Inter,sans-serif;color:#a8adb4;margin:0 0 16px;max-height:4.5em;overflow:auto}
.gallery__navigation{display:flex;align-items:center;justify-content:space-between;gap:16px}
.gallery__thumbnails{display:flex;gap:8px;overflow-x:auto;min-width:0;padding:5px 3px;scrollbar-width:thin;scrollbar-color:#5f6368 transparent}
.gallery__thumb{width:72px;height:48px;flex:none;padding:3px;border:1px solid #a4bcdf36;border-radius:7px;background:#1b1d21;opacity:.55;transition:opacity .2s,border-color .2s,transform .2s}
.gallery__thumb img{width:100%;height:100%;object-fit:contain;background:#fff;border-radius:3px;display:block}
.gallery__thumb:hover,.gallery__thumb[aria-current="true"]{opacity:1;border-color:#ffffff;transform:translateY(-2px)}
.gallery__paging{display:flex;align-items:center;gap:8px;flex:none}
.gallery__count{font:.7rem Inter,sans-serif;color:#a8adb4;white-space:nowrap;min-width:35px;text-align:center;font-variant-numeric:tabular-nums}
html.gallery-open{overflow:hidden;scrollbar-gutter:stable;background:#0c1323}
@keyframes gallery-in{from{opacity:0;transform:translateY(14px) scale(.98)}to{opacity:1;transform:none}}
@keyframes figure-in{from{opacity:.35;transform:translateY(8px)}to{opacity:1;transform:none}}
@media(prefers-reduced-motion:no-preference){.gallery[open]{animation:gallery-in .3s cubic-bezier(.2,.8,.2,1)}.gallery__image.is-entering{animation:figure-in .25s ease-out}}
@media(max-width:760px){.gallery{width:calc(100% - 16px);height:calc(100dvh - 16px);max-height:none;border-radius:16px}.gallery__header{padding:16px;gap:12px}.gallery__control{padding:9px;min-width:40px;min-height:40px}.gallery__stage{padding:12px}.gallery__footer{padding:0 16px 16px}.gallery__navigation{flex-wrap:wrap;gap:12px}.gallery__thumbnails{order:2;width:100%}.gallery__paging{margin-left:auto}.gallery__thumb{width:60px;height:42px}.gallery__caption{font-size:.76rem}.gallery__title{font-size:1rem}.gallery__zoom-label{display:none}}