:root{--ink:#192b38;--muted:#5d6d78;--blue:#246da9;--green:#17815f;--gold:#a16c18;--rule:#dae1e6;--band:#f4f6f8;--dark:#142733;--max:1160px;--gut:clamp(20px,4vw,42px);--sans:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:80px}body{margin:0;color:var(--ink);background:#fff;font:17px/1.7 var(--sans);-webkit-font-smoothing:antialiased}img,video{display:block;max-width:100%;height:auto}a{color:var(--blue);text-underline-offset:4px}a:hover{color:#144c77}button{font:inherit;cursor:pointer}h1,h2,h3,p,figure{margin:0}h1,h2,h3{line-height:1.15;text-wrap:balance}p+p{margin-top:1.2em}h2{font-size:clamp(30px,3.3vw,43px);letter-spacing:-.035em;font-weight:730}h3{font-size:21px;letter-spacing:-.02em}small{font-size:.72em;font-weight:400}.wrap{width:min(calc(100% - 2*var(--gut)),var(--max));margin-inline:auto}.section{padding-block:clamp(58px,7vw,96px)}.band{background:var(--band)}.eyebrow,.small-label{text-transform:uppercase;letter-spacing:.13em;font-size:11px;font-weight:700}.eyebrow{color:var(--blue);margin-bottom:18px}.standfirst{font-size:19px;color:var(--muted);max-width:740px;margin-top:24px}.caption,figcaption{font-size:14px;line-height:1.65;color:var(--muted)}:focus-visible{outline:3px solid #e9ab48;outline-offset:4px}.skip{position:absolute;top:-80px;background:white;padding:12px;z-index:99}.skip:focus{top:8px}
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.hero{background:var(--dark);color:white;overflow:hidden}.hero-grid{display:grid;grid-template-columns:1.12fr 1fr;gap:38px;align-items:center;padding-top:72px;padding-bottom:52px}.hero .eyebrow{color:#9ec7e5}.hero h1{font-size:clamp(43px,5.4vw,72px);line-height:1.01;letter-spacing:-.055em;font-weight:760}.hero h1 em{font-style:normal;color:#a9cde8}.full-title{margin-top:24px;font-size:clamp(20px,2vw,26px);font-weight:530;line-height:1.3;letter-spacing:-.02em}.authors{font-size:16px;color:#e4edf2;margin-top:25px}.authors a{color:inherit}.affiliation{font-size:13px;color:#adbfcb;margin-top:8px;line-height:1.65}.hero-lead{font-size:18px;line-height:1.65;margin-top:26px;max-width:48ch;color:#e0e9ee}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}.button{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:12px 18px;border:1px solid var(--ink);color:var(--ink);border-radius:4px;font-size:14px;font-weight:650;text-decoration:none;background:transparent}.button:hover{background:#eaf1f6}.primary{background:#edf5fa;color:#153144;border-color:#edf5fa}.light{color:#edf5fa;border-color:#70838f}.light:hover{color:white;background:#253b49}.hero-robot{align-self:center}.robot-stage{position:relative;background:radial-gradient(ellipse at 52% 54%,#31465255,transparent 70%);padding:10px 0}.robot-stage>img{width:100%;filter:drop-shadow(10px 20px 15px #0003)}.payload-tag{position:absolute;right:0;top:57%;padding:11px 15px;border-left:2px solid #e8b65a;background:#142733e8;color:#d8c299;font-size:12px;line-height:1.6}.payload-tag b{display:block;color:#f0ca82;font-size:27px;line-height:1.3}.stage-mark{position:absolute;left:0;bottom:5px;font-size:10px;letter-spacing:.13em;color:#92a9b8}.hero-robot figcaption{color:#a6bccb;font-size:14px;border-top:1px solid #ffffff24;padding-top:19px}.hero-bottom{display:flex;justify-content:space-between;gap:20px;padding-block:20px 25px;border-top:1px solid #ffffff24;color:#b9cbd7;font-size:12px}.hero-bottom a{color:#d9e9f3;text-decoration:none}
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.engine-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:40px}.engine-grid article{border-bottom:1px solid var(--rule);padding-bottom:25px}.engine-grid img{width:100%;aspect-ratio:1.35;object-fit:cover;object-position:50% 49%}.engine-grid article>div{padding-top:20px}.engine-grid h3{margin:12px 0 15px;font-size:20px}.engine-grid p{font-size:15px;color:var(--muted)}.small-label{color:var(--blue)}.table-scroll{overflow-x:auto;margin-top:35px}table{width:100%;border-collapse:collapse;text-align:right;font-variant-numeric:tabular-nums}caption{text-align:left;color:var(--muted);font-size:14px;margin-bottom:15px}th,td{padding:17px 20px;border-bottom:1px solid var(--rule);white-space:nowrap}th:first-child,td:first-child{text-align:left}thead{border-top:1px solid #8da1af;border-bottom:1px solid #8da1af}thead th{font-size:13px;font-weight:650;color:var(--muted)}tbody th{font-size:15px;font-weight:600}td{font-size:17px}td.sapc{font-weight:700}details{margin-top:27px;border-block:1px solid var(--rule);padding-block:17px}details+details{border-top:0;margin-top:0}summary{cursor:pointer;font-size:16px;font-weight:600;padding-right:10px}details figure{margin-bottom:14px}.control-note{display:grid;grid-template-columns:1fr 1.9fr;gap:45px;margin-top:38px;padding-top:28px;border-top:1px solid var(--rule)}.control-note strong{font-size:24px;line-height:1.35;color:var(--blue)}.control-note p{font-size:16px;color:var(--muted)}.scope-grid{display:grid;grid-template-columns:1fr 1.3fr;gap:70px}.resource-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;margin-top:40px}.resource{border-top:2px solid #95aabd;text-decoration:none;padding-top:22px;color:var(--ink)}.resource>span{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.13em}.resource h3{margin:15px 0}.resource p{color:var(--muted);font-size:15px}.resource:hover{border-color:var(--blue)}.download-list{display:flex;gap:14px 28px;flex-wrap:wrap;margin-block:33px 22px}.download-list a{font-size:14px}.citation .section-heading{grid-template-columns:1fr auto}.citation pre{background:var(--band);padding:25px;overflow-x:auto;line-height:1.65;font-size:14px;border-left:3px solid #9ab9cf;margin-bottom:0}.citation #copy-status{min-height:24px;margin-top:8px}.footer-row{display:flex;justify-content:space-between;align-items:center;gap:22px;font-size:12px}.footer-row p{color:var(--muted)}footer{padding-block:32px;background:var(--band);border-top:1px solid var(--rule)}.footer-note{margin-top:22px;color:var(--muted);font-size:12px}
@media(min-width:1600px){.hero-grid{padding-block:96px 65px}}@media(max-width:950px){nav{gap:17px}.hero-grid{gap:15px;grid-template-columns:1.1fr 1fr}.hero h1{font-size:52px}.section-heading{gap:30px}.abstract-grid{gap:35px}.method-steps{gap:22px}.engine-grid{gap:18px}.engine-grid h3{font-size:18px}.scope-grid{gap:35px}.payload-tag{right:-10px;font-size:10px}.payload-tag b{font-size:22px}}
@media(max-width:700px){.nav-row{min-height:59px;gap:20px}.brand{font-size:20px}nav{overflow-x:auto;gap:18px;padding-block:16px;max-width:calc(100vw - 125px)}nav a{font-size:12px}.hero-grid{grid-template-columns:1fr;padding-top:43px;padding-bottom:30px}.hero h1{font-size:clamp(44px,10vw,65px)}.full-title{font-size:22px}.hero-copy{max-width:600px}.hero-robot{max-width:440px;width:100%;margin:15px auto 0}.robot-stage>img{width:90%;margin:auto}.payload-tag{right:5%;top:53%}.hero-robot figcaption{font-size:13px}.hero-bottom{display:block;font-size:11px}.hero-bottom a{display:block;margin-top:12px}.section-heading,.abstract-grid,.scope-grid,.identifiability,.control-note{grid-template-columns:1fr;gap:25px}.standfirst{font-size:17px}.attribution-grid{gap:4px;grid-template-columns:1fr .65fr 1fr}.attribution-grid img{width:100%}.attribution-grid strong{font-size:29px}.attribution-grid .method{font-size:14px}.attribution-grid figcaption{font-size:12px}.idea-middle{font-size:14px}.idea-middle .small-label{font-size:8px}.idea-middle a{font-size:10px}.equivalence{font-size:45px}.comparison-heading{align-items:flex-start;flex-direction:column}.segmented{width:100%}.segmented button{flex:1}.score-grid{gap:15px}.score>span{font-size:12px}.score strong{font-size:34px}.score small{font-size:12px;margin-left:4px}.comparison-note{font-size:15px}.method-steps,.engine-grid,.resource-grid{grid-template-columns:1fr;gap:28px}.engine-grid article{display:grid;grid-template-columns:120px 1fr;gap:18px;align-items:center}.engine-grid img{aspect-ratio:1;object-fit:cover}.engine-grid article>div{padding:0}.engine-grid h3{font-size:18px;margin-block:8px}.engine-grid p{font-size:13px}.engine-grid .small-label{font-size:9px}.paper-figure{padding:7px}.paper-figure figcaption{margin:13px 5px 6px}.library-line{gap:8px;font-size:12px}.library-line b{font-size:17px}th,td{padding:14px 13px}.control-note{gap:16px}.footer-row{flex-wrap:wrap}.footer-row p{order:3;flex-basis:100%}.citation pre{font-size:12px;padding:17px}.citation .button{font-size:12px;padding:9px}.caption,figcaption{font-size:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

/* Full-bleed experiment background, with a readable title and error comparison. */
.hero{position:relative;isolation:isolate;min-height:780px;min-height:max(780px,calc(100svh - 66px));display:flex;background:#11232f}
.hero-background{position:absolute;inset:0;width:100%;height:100%;max-width:none;object-fit:cover;object-position:center;z-index:-3;filter:saturate(.8)}
.hero-shade{position:absolute;inset:0;z-index:-2;background:linear-gradient(180deg,rgba(12,27,39,.98) 0%,rgba(12,27,39,.91) 30%,rgba(12,27,39,.3) 58%,rgba(12,27,39,.32) 70%,rgba(12,27,39,.97) 93%)}
.hero-focus{position:absolute;left:33.333%;width:33.334%;top:49%;bottom:16%;z-index:-1;border-inline:1px solid #ffb16b55;background:linear-gradient(180deg,transparent,#ffb16b12 70%,transparent);box-shadow:inset 0 0 60px #ffab5010}
.hero-content{display:flex;flex-direction:column;justify-content:space-between;padding-block:45px 24px;gap:clamp(220px,30vh,360px)}
.hero-copy{max-width:1120px;margin-inline:auto;text-align:center}.hero h1{font-size:clamp(46px,5.25vw,76px);line-height:1.08;letter-spacing:-.045em}.hero .eyebrow{margin-bottom:18px}.hero .full-title{font-size:clamp(19px,2.1vw,27px);margin-top:18px}.hero .authors{margin-top:21px;font-size:15px}.hero .authors span,.hero .authors a{white-space:nowrap}.hero .affiliation{margin-top:7px;font-size:13px}.hero .actions{justify-content:center;margin-top:22px}.hero .light{background:#162d3ac4;border-color:#aec4d1}.hero .light:hover{background:#304b5b}
.hero-evidence{position:relative}.hero-evidence-title{text-align:center;font-size:17px;color:#d8e3ea;margin-bottom:16px}.hero-evidence-title strong{color:white;font-weight:600}.hero-scores{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;text-align:center;align-items:stretch}.hero-scores>div{padding:13px 12px 12px;border-top:1px solid #d2e2ed40;background:#10212b8c}.hero-scores span{display:block;font-size:13px;color:#cedbe3}.hero-scores strong{display:block;font-size:clamp(30px,3.7vw,48px);line-height:1.25;letter-spacing:-.04em;font-variant-numeric:tabular-nums;margin-top:3px}.hero-scores small{font-size:.4em;letter-spacing:0}.hero-scores .hero-dense{background:#42251cda;border-top:3px solid #ffae74;box-shadow:0 0 30px #ff8c3418}.hero-dense strong{color:#ffc18e}.hero-dense span{color:#ffe0c4}.hero-sapc strong{color:#9cd6ff}.hero-reference strong{font-size:18px;letter-spacing:0;margin-top:13px;font-weight:500;color:#c5d4df}.hero-foot{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-top:15px}.hero-foot p{font-size:11px;line-height:1.6;color:#d0dce5}.hero-foot p span{color:#9cb3c3}.hero-foot button{flex-shrink:0;background:#102431b3;border:1px solid #8ea5b5;border-radius:30px;padding:7px 14px;color:#e9f1f7;font-size:12px}.hero-foot button:hover{background:#284555}
@media(min-width:1600px){.hero-content{padding-top:65px}}
@media(max-width:950px){.hero h1{font-size:57px}.hero-content{gap:220px}.hero-reference strong{font-size:16px}}
@media(max-width:700px){.hero{min-height:calc(100svh - 59px)}.hero-content{padding-block:34px 22px;gap:220px}.hero-copy{max-width:100%}.hero h1{font-size:clamp(40px,10.5vw,62px)}.hero .eyebrow{font-size:9px;letter-spacing:.12em;margin-bottom:15px}.hero .full-title{font-size:20px;line-height:1.3;margin-top:17px}.hero .authors{font-size:13px;line-height:1.9;margin-top:20px}.hero .affiliation{font-size:11px}.hero .actions{gap:8px;margin-top:20px}.hero .button{font-size:12px;padding:10px 12px}.hero-focus{left:12%;width:76%;top:48%;bottom:24%;border-color:#ffb16b40}.hero-shade{background:linear-gradient(180deg,#0c1b27f5 0%,#0c1b27df 36%,#0c1b2740 58%,#0c1b2770 70%,#0c1b27fa 85%)}.hero-evidence-title{font-size:14px;margin-bottom:14px}.hero-evidence-title strong{display:block}.hero-scores{gap:6px}.hero-scores>div{padding:10px 5px}.hero-scores span{font-size:10px;line-height:1.4}.hero-scores strong{font-size:29px;margin-top:8px}.hero-reference strong{font-size:12px;margin-top:12px;line-height:1.4}.hero-foot{align-items:center;gap:10px}.hero-foot p{font-size:9px}.hero-foot button{font-size:10px;padding:7px 10px}}

/* Labels sit above the three corresponding replay panels. */
.hero-motion-labels{position:absolute;inset:49% 0 auto;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;padding-inline:18px;pointer-events:none}
.motion-label{justify-self:center;text-align:center;background:#142733df;border:1px solid #b7cbd55c;border-radius:6px;padding:8px 19px;box-shadow:0 5px 20px #0002;line-height:1.4}
.motion-label strong{display:block;color:#edf4f8;font-size:20px;font-weight:700;letter-spacing:-.02em}.motion-label span{display:block;color:#b9cbd7;font-size:11px;margin-top:3px}
.motion-wrong{border-color:#ffb16b;background:#41291feb}.motion-wrong strong{color:#ffc18e}.motion-wrong span{color:#ffe0c4}.motion-correct{border-color:#86c9fa;background:#163245eb}.motion-correct strong{color:#9cd6ff}.motion-correct span{color:#d6edfd}
@media(max-width:950px){.motion-label{padding:8px 12px}.motion-label strong{font-size:17px}.motion-label span{font-size:10px}}
@media(max-width:700px){.hero-motion-labels{top:48%;grid-template-columns:1fr}.motion-true,.motion-correct{display:none}.motion-label{padding:7px 17px}.motion-label strong{font-size:17px}.motion-label span{font-size:10px}}

/* Two synchronized model views, each overlaid with the true TCP curve. */
.hero-motion-labels,.hero-scores{grid-template-columns:repeat(2,minmax(0,1fr))}
.hero-focus{left:0;width:50%;top:49%;bottom:16%}
.hero-path-legend{display:flex;justify-content:center;gap:24px;flex-wrap:wrap;margin-bottom:9px;font-size:12px;color:#e4eef5}.hero-path-legend span{display:inline-flex;align-items:center;gap:8px}.hero-path-legend span:before{content:"";display:block;width:27px;border-top:3px solid #ffc18e}.hero-path-legend .legend-reference:before{border-top:3px dashed #21d478}.hero-path-legend .legend-actual:before{border-image:linear-gradient(90deg,#ffc18e 50%,#9cd6ff 50%) 1}.hero-evidence-title{margin-top:0!important}#video .video-figure video{aspect-ratio:1440/760}
@media(max-width:700px){.hero-content{gap:260px}.hero-background{top:330px;bottom:auto;height:340px;object-fit:cover;object-position:center bottom}.hero-motion-labels{top:49%;grid-template-columns:repeat(2,minmax(0,1fr));padding-inline:12px;gap:8px}.motion-correct{display:block}.motion-label{padding:6px 10px}.motion-label strong{font-size:14px}.motion-label span{font-size:8px}.hero-focus{left:0;width:50%;top:49%;bottom:25%}.hero-scores strong{font-size:36px}.hero-scores span{font-size:12px}.hero-path-legend{gap:7px 16px;font-size:10px;margin-bottom:12px}.hero-path-legend span:before{width:20px;border-top-width:2px}}

@media(max-width:700px){.hero-background{mask-image:linear-gradient(180deg,transparent,#000 20%,#000 80%,transparent)}}

.hero-foot{justify-content:flex-end}

.hero .affiliation a{color:inherit}.hero .affiliation a:hover{color:#fff}
.nd{color:#c62828}
.hero .venue{margin-top:10px;font-size:13px;color:#cfdde6;letter-spacing:.01em}.hero .venue em{font-style:italic}
@media(max-width:700px){.hero .venue{font-size:11px;margin-top:8px}}
.robot2{margin-top:72px;padding-top:52px;border-top:1px solid var(--rule)}.robot2-grid{display:grid;grid-template-columns:1fr 1.35fr;gap:42px;align-items:start;margin-top:34px}.robot2-grid>*{min-width:0}.robot2-grid figure img{width:100%;aspect-ratio:1.2;object-fit:cover;object-position:50% 58%}.robot2-grid figcaption{font-size:13px;color:var(--muted);margin-top:10px}.robot2-note{margin-top:24px;font-size:15px;line-height:1.65}.robot2-note strong{display:block;margin-bottom:6px}
@media(max-width:700px){.robot2{margin-top:46px;padding-top:34px}.robot2-grid{grid-template-columns:1fr;gap:22px}.robot2-note{font-size:14px}}