@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;450;500;550;600;650;700&family=Manrope:wght@500;600;650;700;750;800&display=swap');
:root{--ink:#172a2c;--muted:#5c696c;--accent:#08696c;--border:#dce3e3;--tint:#f3f7f7;--human:#9467bd;--positive:#dbefed;--negative:#f8e7dc;--radius:6px;color:var(--ink);font-family:'DM Sans',sans-serif;font-size:16px;font-weight:400}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:92px}body{margin:0;background:#fff}h1,h2,h3,p,figure{margin:0}h1,h2,h3{font-family:'Manrope',sans-serif}h1{font-size:clamp(34px,4vw,50px);line-height:1.2;font-weight:750;letter-spacing:-1.7px}h2{font-size:clamp(27px,3vw,35px);line-height:1.25;font-weight:650;letter-spacing:-1px;margin-bottom:19px}h3{font-size:17px;line-height:1.4;font-weight:650;letter-spacing:-.3px}p{line-height:1.65}a{color:var(--accent);text-underline-offset:4px}button,select,input{font:inherit}button,select{color:inherit;border:1px solid var(--border);border-radius:5px;background:white;font-size:14px}button{padding:10px 15px;cursor:pointer;line-height:1.4;font-weight:500;min-height:42px}button:hover{background:var(--tint);border-color:#9db6b7}button[aria-pressed=true]{border-color:var(--accent);color:var(--accent);background:#eaf4f3}select{padding:10px 30px 10px 12px;max-width:100%;min-height:42px}input[type=range]{accent-color:var(--accent);width:100%;cursor:pointer;min-height:28px}input[type=checkbox]{accent-color:var(--accent);width:16px;height:16px}button.primary{color:white;background:var(--accent);border-color:var(--accent)}button.primary:hover{background:#064f52}.plain-button{border-color:transparent;background:transparent;text-decoration:underline;text-underline-offset:4px}.primary,.plain-button{white-space:nowrap}a:focus-visible,button:focus-visible,select:focus-visible,input:focus-visible,[tabindex]:focus-visible,summary:focus-visible{outline:3px solid #ba691c;outline-offset:4px}[hidden]{display:none!important}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:fixed;top:-60px;left:20px;background:white;padding:12px;z-index:100}.skip-link:focus{top:10px}
header{height:68px;padding:0 max(28px,5vw);display:flex;align-items:center;justify-content:space-between;gap:20px;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:20;background:#fffffff5;backdrop-filter:blur(12px)}.wordmark{color:var(--ink);text-decoration:none;font:800 23px 'Manrope',sans-serif;letter-spacing:-1px}.wordmark span{color:var(--accent)}nav{display:flex;gap:28px}nav a,.paper-link{font-size:14px;text-decoration:none;color:var(--ink)}nav a:hover,.paper-link:hover{color:var(--accent)}.hero,.section,.wrap,footer{max-width:1080px;margin:auto}.hero{text-align:center;padding:55px 0 42px}.hero>p:not(.hero-result){max-width:790px;margin:22px auto 0;color:var(--muted);font-size:18px;line-height:1.6}.hero>p strong{color:var(--accent);font-weight:600}.hero-links{display:flex;justify-content:center;gap:27px;margin:23px 0 30px}.hero-links a{font-size:15px;font-weight:500}.task-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.task-strip img{width:100%;height:180px;object-fit:cover;border-radius:5px;display:block}.task-strip figcaption{font-size:15px;font-weight:550;padding-top:10px}.hero .hero-result{font-size:16px;max-width:780px;margin:25px auto 0;color:var(--muted)}.hero .hero-result strong{color:var(--ink)}.section{padding:55px 0;border-top:1px solid var(--border)}.section-lead{max-width:870px;color:var(--muted);font-size:17px;margin-bottom:28px}.quiet,.note{color:var(--muted)}.note{font-size:14px;line-height:1.6;margin-top:17px}.source-note{margin-top:20px;font-size:14px;color:var(--muted)}summary{cursor:pointer;line-height:1.6;font-size:14px;font-weight:500;color:var(--ink);padding:3px 0}details[open]>summary{margin-bottom:14px}.source-note p{font-size:14px;max-width:960px;margin-bottom:12px}.source-note a{font-size:14px}.source-path{overflow-wrap:anywhere;font-size:12px!important}.failure-figure{border:1px solid var(--border);border-radius:var(--radius);padding:25px 30px}.failure-heading{display:flex;justify-content:space-between;gap:20px;font-size:15px;margin-bottom:22px}.failure-heading>span:first-child{font-weight:550}.failure-bars{height:170px;display:flex;gap:15px}.bar-y{width:48px;flex-shrink:0;display:flex;flex-direction:column;justify-content:space-between;color:var(--muted);font-size:12px;text-align:right;padding-bottom:2px}.bar-y span:nth-child(2){font-size:11px}.bar-columns{display:flex;gap:3px;flex:1;position:relative;border-bottom:1px solid var(--border);border-top:1px solid var(--border);background:linear-gradient(to bottom,transparent 49.5%,var(--border) 50%,transparent 50.5%);align-items:end}.bucket{height:100%;flex:1;position:relative;display:flex;align-items:end}.bucket span{display:block;width:100%;height:var(--height);background:#c9d3d4;transition:background .18s}.bucket.selected span{background:var(--accent)}.axis-ends{margin-left:63px;display:flex;justify-content:space-between;font-size:12px;color:var(--muted);padding-top:10px}.failure-control{display:grid;grid-template-columns:240px 1fr;align-items:center;gap:10px 25px;margin-top:25px}.failure-control label{font-size:15px}.failure-control output{font-weight:700;color:var(--accent)}.failure-control p{grid-column:1/-1;font-size:17px;margin-top:4px}.failure-control p strong{font-size:26px;color:var(--accent);font-weight:600}.failure-figure .source-note{margin-top:12px}.algorithm{margin-top:30px}.algorithm-controls{display:flex;align-items:center;justify-content:space-between;gap:20px}.step-tabs{display:flex;gap:9px;flex:1}.step-tabs button{display:flex;align-items:center;gap:8px;flex:1;justify-content:center}.step-tabs span{font-size:12px;color:var(--muted)}.flow-nodes{display:flex;align-items:stretch;gap:15px;margin-top:18px;min-height:120px}.flow-node{flex:1;border:1px solid var(--border);border-radius:6px;padding:26px 16px;display:flex;flex-direction:column;justify-content:center;gap:10px;text-align:center;animation:arrive .25s ease-out}.flow-node strong{font-size:17px;font-weight:550}.flow-node span{font-size:14px;color:var(--muted)}.flow-node.output{background:var(--tint)}.flow-arrow{align-self:center;font-size:22px;color:#899fa0}.method-text{color:var(--muted);font-size:16px;line-height:1.65;min-height:80px;margin-top:18px;max-width:970px}.algorithm+.note{border-left:2px solid var(--accent);padding-left:15px;margin-top:9px}
.cf-pair{display:grid;grid-template-columns:1fr 1fr;gap:20px}.cf-pair h3{margin-bottom:13px}.cf-pair video{width:100%;display:block;aspect-ratio:720/404;background:#112b2d;object-fit:contain;border-radius:5px 5px 0 0}.control-track{height:18px;display:flex;background:#d1dbdc;margin-top:5px;border-radius:2px;overflow:hidden}.control-track span{display:flex;align-items:center;justify-content:center;font-size:11px;color:white}.control-track .human{background:var(--human)}.control-track .policy{background:#526b70}.cf-pair figcaption{display:flex;justify-content:space-between;gap:10px;color:var(--muted);font-size:12px;margin-top:8px;line-height:1.5}.human-text{color:#7746a1;font-weight:600}.pair-controls{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:23px}.speed-label{display:flex;align-items:center;gap:8px;font-size:14px;margin-left:7px}.speed-label select{min-height:42px}.pair-controls .plain-button{margin-left:auto}.pair-scrubber{display:flex;align-items:center;gap:20px;margin-top:11px}.pair-scrubber output{font-size:12px;color:var(--muted);min-width:85px;text-align:right}.cf-explanation{display:grid;grid-template-columns:1fr 1fr;gap:45px;margin-top:27px}.cf-explanation p{color:var(--muted);font-size:16px;margin-top:12px}.result-controls{display:flex;gap:20px;align-items:center;flex-wrap:wrap;margin:28px 0 20px}.segmented{display:flex;gap:0}.segmented button{border-radius:0;margin-left:-1px}.segmented button:first-child{border-radius:5px 0 0 5px;margin-left:0}.segmented button:last-child{border-radius:0 5px 5px 0}.segmented button[aria-pressed=true]{position:relative;z-index:1}.check{display:flex;align-items:center;gap:8px;font-size:14px;cursor:pointer}.legend{display:flex;gap:9px 22px;flex-wrap:wrap;font-size:13px;line-height:1.7;margin:0 0 15px}.legend span{display:inline-flex;align-items:center;gap:7px}.legend i{width:19px;height:3px;background:var(--color);flex-shrink:0}.plots{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}.plots.two-plots{grid-template-columns:1fr 1fr;max-width:930px;margin:0 auto}.plots h3{font-size:17px;margin:12px 0 10px}.plots svg{width:100%;height:auto;display:block;overflow:visible}.plot-point{cursor:pointer}.plot-point:hover .point-mark,.plot-point:focus .point-mark{stroke:var(--ink);stroke-width:3}#plot-tooltip{position:fixed;z-index:100;pointer-events:none;background:#173538;color:white;border-radius:5px;width:275px;padding:11px 13px;font-size:13px;line-height:1.5;box-shadow:0 4px 15px #17353833}.protocol-details{border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:18px 0;margin:22px 0}.protocol-details>summary{font-size:16px}.protocol-details>p{max-width:880px;color:var(--muted);font-size:15px}.protocol-controls{margin:20px 0}.protocol-diagram{height:230px;position:relative}.round-backdrop{position:absolute;top:0;width:calc(50% - 8px);height:225px;background:var(--tint);border:1px solid var(--border);border-radius:6px;padding:12px 16px;font-size:13px;font-weight:550;opacity:0;transition:opacity .3s}.round-backdrop.first{left:0}.round-backdrop.second{right:0}.protocol-diagram[data-arrangement=round] .round-backdrop,.protocol-diagram[data-arrangement=paired] .round-backdrop{opacity:1}.eval-token{position:absolute;left:calc(var(--col)*100%/6 + 9px);top:calc(var(--row)*83px + 42px);width:calc(100%/6 - 18px);height:69px;border:1px solid var(--border);background:white;border-radius:4px;display:flex;flex-direction:column;gap:8px;align-items:center;justify-content:center;transition:left .65s ease,top .65s ease}.eval-token span{font-size:12px;color:var(--muted)}.eval-token b{font-size:14px;font-weight:500}.protocol-diagram[data-arrangement=paired] .eval-token:nth-child(2n){background:#e6f1f0}.paper-figure{display:block;width:100%;margin:20px 0}.library-controls{display:flex;flex-wrap:wrap;gap:16px;margin:25px 0 20px}.library-controls label,#video-jump label,.inspector-controls label{display:flex;flex-direction:column;gap:7px;font-size:13px}.library-controls label:first-child{flex:1;min-width:200px}.library-controls label:last-child{flex:1.5}.library-controls select{width:100%}#video-player{background:#112b2d;border-radius:6px;overflow:hidden}#video-player video{display:block;width:100%;aspect-ratio:16/9;max-height:620px}#video-jump{display:flex;align-items:center;gap:20px;flex-wrap:wrap;margin-top:18px}#video-jump .note{margin:10px 0 0}footer{border-top:1px solid var(--border);display:flex;gap:25px;align-items:center;padding:28px 0 40px;font-size:13px;color:var(--muted)}footer>span{margin-right:auto}.media-error{padding:15px;color:#843c25;background:#fff1e6;font-size:14px}
/* Evidence inspection */
dialog{border:0;border-radius:9px;box-shadow:0 20px 90px #102e3244;width:min(980px,94vw);max-height:92vh;padding:27px 30px;color:var(--ink)}dialog::backdrop{background:#112b2da6;backdrop-filter:blur(3px)}.dialog-header{display:flex;gap:20px;justify-content:space-between;align-items:start}.dialog-header h2{font-size:26px;margin:4px 0 15px}.dialog-header button{border:0;font-size:28px;line-height:1;width:42px;height:42px;flex-shrink:0;padding:4px}.selected-result{font-size:16px;line-height:1.6;margin:0 0 20px}.selected-result strong{color:var(--accent)}.inspector-controls{display:grid;grid-template-columns:1fr 1fr;gap:16px}.inspector-controls select{width:100%}.pair-counts{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:17px 0}.pair-counts button{display:flex;flex-direction:column;gap:7px;align-items:start;text-align:left;border-color:transparent;padding:13px}.pair-counts strong{font-size:24px;font-weight:550}.pair-counts span{font-size:12px;line-height:1.35}.pair-counts button[aria-pressed=true]{border:2px solid var(--accent);padding:12px}.both{background:#eff3f3!important}.primary.start-tile,.pair-counts .primary{background:var(--positive)!important;color:#125451}.comparison{background:var(--negative)!important;color:#834528}.neither{background:white!important;color:var(--muted)}.matrix-header{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);margin:8px 0}.matrix-header button{font-size:13px;padding:5px 0;min-height:30px}.start-matrix{display:grid;grid-template-columns:repeat(10,1fr);gap:6px}.start-tile{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;height:52px;padding:5px;min-height:0;border-color:var(--border)}.start-tile span{font-size:11px}.start-tile b{font-size:12px;font-weight:500;letter-spacing:1px}.start-tile[aria-pressed=true]{outline:2px solid var(--accent);outline-offset:1px;border-color:var(--accent);color:var(--ink)}#selected-start{border-top:1px solid var(--border);margin-top:24px;padding-top:20px}#selected-start h3{font-size:18px;margin-bottom:13px}.start-outcomes{display:flex;gap:22px;flex-wrap:wrap;margin-bottom:18px}.start-outcomes>div{display:flex;flex-direction:column;gap:6px;flex:1;min-width:180px}.start-outcomes span{font-size:13px}.start-outcomes strong{font-size:15px;text-transform:capitalize;font-weight:550}.start-outcomes small{font-size:12px;color:var(--muted)}#start-video video{width:100%;max-height:500px;margin-top:15px}.table-scroll{max-height:350px;overflow:auto;border:1px solid var(--border)}table{width:100%;border-collapse:collapse;font-size:13px;text-align:left}th,td{padding:10px 12px;border-bottom:1px solid var(--border)}th{font-weight:550}thead{position:sticky;top:0;background:var(--tint)}.seed-bars{display:flex;flex-direction:column;gap:19px;margin:28px 0}.seed-bars>div{display:grid;grid-template-columns:70px 1fr 65px;align-items:center;gap:15px;font-size:14px}.seed-bars>div>div{height:22px;background:var(--tint)}.seed-bars i{display:block;height:100%}.seed-bars strong{text-align:right;font-weight:550}
@keyframes arrive{from{opacity:.5;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}
@media(max-width:1150px){.hero,.section,.wrap,footer{margin-left:28px;margin-right:28px}.hero{padding-top:42px}.step-tabs button{padding:9px 11px}.flow-node{padding:22px 13px}.result-controls{gap:13px}.legend{gap:8px 16px}}
@media(max-width:750px){header{height:60px;padding:0 18px;gap:10px}.wordmark{font-size:20px}nav{gap:16px}nav a{font-size:13px}.paper-link{display:none}.hero,.section,.wrap,footer{margin-left:20px;margin-right:20px}.hero{padding:35px 0}.hero>p:not(.hero-result){font-size:16px;margin-top:18px}.hero-links{margin:20px 0 24px}.wide-only{display:none}.task-strip{gap:10px}.task-strip img{height:135px}.task-strip figcaption{font-size:13px}.hero .hero-result{font-size:15px;line-height:1.6;margin-top:20px}.section{padding:38px 0}.section-lead{font-size:16px;margin-bottom:22px}.failure-figure{padding:18px 16px}.failure-heading{font-size:13px;gap:10px}.failure-heading .quiet{font-size:12px}.failure-bars{height:140px;gap:8px}.bar-y{width:40px;font-size:11px}.bar-columns{gap:1.5px}.axis-ends{margin-left:48px;font-size:11px}.failure-control{grid-template-columns:1fr;gap:6px;margin-top:20px}.failure-control p{font-size:15px}.failure-control p strong{font-size:22px}.failure-control label{font-size:14px}.algorithm-controls{align-items:start;gap:8px}.step-tabs{display:grid;grid-template-columns:1fr 1fr;gap:6px}.step-tabs button{font-size:13px;justify-content:start}.algorithm-controls>.plain-button{font-size:13px;padding:10px 4px}.flow-nodes{gap:7px;min-height:135px}.flow-node{padding:13px 8px;gap:9px}.flow-node strong{font-size:14px}.flow-node span{font-size:12px}.flow-arrow{font-size:16px}.method-text{font-size:15px;min-height:130px}.cf-pair{gap:14px}.cf-pair h3{font-size:14px;min-height:39px}.cf-pair figcaption{flex-direction:column;font-size:11px;gap:3px}.cf-pair video{aspect-ratio:4/3}.control-track{height:15px}.control-track span{font-size:9px}.pair-controls{gap:8px}.pair-controls button{font-size:13px;padding:9px 12px}.pair-controls .plain-button{margin-left:0}.speed-label{margin-left:0;font-size:13px}.pair-scrubber{gap:13px}.cf-explanation{grid-template-columns:1fr;gap:22px}.cf-explanation p{font-size:15px}.result-controls{gap:12px;align-items:center}.result-controls .check{width:100%;font-size:13px}.result-controls select{font-size:13px}.segmented button{font-size:13px;padding:9px 13px}.legend{font-size:12px;gap:6px 14px}.plots,.plots.two-plots{grid-template-columns:1fr;gap:16px;max-width:460px;margin:auto}.plots h3{font-size:18px}.plots svg{width:100%}.protocol-controls button{font-size:12px;padding:8px}.eval-token{left:calc(var(--col)*100%/6 + 3px);width:calc(100%/6 - 6px);padding:5px 1px}.eval-token span{font-size:9px}.eval-token b{font-size:11px}.round-backdrop{width:calc(50% - 2px);padding:12px 8px}.protocol-diagram{height:224px}.library-controls{gap:12px}.library-controls label:first-child{width:calc(100% - 90px);min-width:0}.library-controls label:last-child{flex-basis:100%}.library-controls label[hidden]{display:none}#video-player video{aspect-ratio:16/10}#video-jump{gap:12px}#video-jump select{font-size:13px}.note{font-size:13px}.source-note p{font-size:13px}footer{flex-wrap:wrap;gap:14px;font-size:12px;padding:23px 0}footer>span{width:100%}dialog{padding:20px 16px;max-height:94vh;width:96vw}.dialog-header h2{font-size:22px}.selected-result{font-size:14px}.inspector-controls{grid-template-columns:1fr;gap:10px}.pair-counts{gap:6px}.pair-counts button{padding:9px 6px}.pair-counts strong{font-size:21px}.pair-counts span{font-size:10px}.pair-counts button[aria-pressed=true]{padding:8px 5px}.start-matrix{grid-template-columns:repeat(5,1fr);gap:6px}.start-tile{height:47px}.start-outcomes{gap:15px}.start-outcomes>div{min-width:125px}.start-outcomes span{font-size:12px}.seed-bars>div{grid-template-columns:55px 1fr 50px;gap:10px;font-size:12px}}
@media(max-width:390px){nav{gap:11px}nav a{font-size:12px}.hero,.section,footer{margin-left:16px;margin-right:16px}.task-strip img{height:112px}.task-strip figcaption{font-size:12px}.result-controls{gap:8px}.result-controls select{max-width:185px}.flow-nodes{gap:5px}.flow-node strong{font-size:12px}.flow-node span{font-size:11px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}

@media(max-width:750px){.protocol-diagram{height:450px}.round-backdrop{width:100%;height:220px}.round-backdrop.second{top:225px}.eval-token{left:calc(var(--mobile-col)*100%/3 + 6px);top:var(--mobile-top);width:calc(100%/3 - 12px)}.eval-token span{font-size:12px}.eval-token b{font-size:13px}}

.paper-authors,.paper-affiliations{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 22px;margin-top:20px}.paper-affiliations{color:var(--muted);font-size:14px;margin-top:10px}.paper-authors sup{margin-left:3px}.hero .submission-note{font-size:14px}