:root{color-scheme:light;--bg:#f5f4ee;--paper:#fffefa;--ink:#1b302c;--muted:#62716b;--green:#146c55;--lime:#d4ef8c;--line:#d7ddd3;--dark:#091218;--orange:#ad482a;--mono:Consolas,"Courier New",monospace}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--bg);color:var(--ink);font-family:"Segoe UI",Arial,sans-serif;line-height:1.65}a{color:inherit;text-decoration:none}button{font:inherit;color:inherit;cursor:pointer}a:hover{text-decoration:underline}button,a,summary{touch-action:manipulation}a:focus-visible,button:focus-visible,summary:focus-visible,video:focus-visible{outline:3px solid #b96a29;outline-offset:5px}[hidden]{display:none!important}.wrap{width:min(1320px,100%);padding-inline:52px;margin-inline:auto}.skip-link{position:absolute;top:-100px;left:20px;background:var(--paper);padding:14px;z-index:20}.skip-link:focus{top:10px}.masthead{border-bottom:1px solid var(--line);background:var(--bg)}nav{height:90px;display:flex;align-items:center;justify-content:space-between;gap:28px}.brand{display:flex;align-items:center;gap:10px;font-size:25px;letter-spacing:-1px;font-weight:750}.brand-mark{display:flex;align-items:center;justify-content:center;width:34px;height:34px;background:var(--green);color:white;font-size:23px;border-radius:8px;position:relative}.brand-mark>span{font-size:14px;align-self:flex-start;margin-top:1px}.brand-sub{font:9px var(--mono);letter-spacing:1px;border-left:1px solid var(--line);padding-left:15px;margin-left:7px;color:var(--muted)}.nav-links{display:flex;gap:30px;font-size:13px}.repo-link{font-size:13px;border:1px solid var(--line);padding:8px 15px;border-radius:5px}.repo-link span{margin-left:14px}.hero{display:grid;grid-template-columns:1fr 1fr;gap:46px;padding-block:76px 64px;align-items:center}.eyebrow{font:10px var(--mono);letter-spacing:1.6px;color:var(--green);font-weight:700;margin:0 0 25px}.status-dot{display:inline-block;background:var(--green);width:7px;height:7px;border-radius:50%;margin-right:7px}h1{font-size:clamp(68px,6.9vw,96px);font-weight:600;line-height:1.02;letter-spacing:-6px;margin:0 0 28px}h1 em{color:var(--green);font-family:Georgia,serif;font-weight:400}.hero-description{font-size:18px;max-width:455px;color:var(--muted);line-height:1.7}.hero-actions{display:flex;align-items:center;gap:24px;flex-wrap:wrap;margin-top:30px}.button{display:inline-flex;align-items:center;justify-content:space-between;gap:28px;padding:14px 20px;font-size:12px;font-weight:650;border-radius:5px}.button.primary{color:white;background:var(--green)}.button:hover{background:#105844;text-decoration:none}.text-link{font-size:12px;font-weight:650;background:none;border:0;padding:0;color:var(--green)}.hero-footnote{font:10px var(--mono);color:var(--muted);margin-top:28px}.hero-visual{margin:0;min-width:0;background:#070f17;color:#e5eeeb;border-radius:12px;overflow:hidden;border:1px solid #263638;box-shadow:0 16px 35px #173a2910}.visual-top{display:flex;justify-content:space-between;gap:12px;margin:22px 22px 0;font:8px var(--mono);letter-spacing:1px;color:#9baea7}.visual-top i{display:inline-block;width:5px;height:5px;background:var(--lime);border-radius:50%;margin-right:7px}.hero-visual img{display:block;width:100%;height:auto}.visual-callout{display:flex;align-items:center;gap:12px;padding:0 25px 22px;font:9px var(--mono);letter-spacing:1px}.crosshair{font-size:32px;font-weight:300;color:var(--lime)}.visual-callout small{display:block;font:10px "Segoe UI",sans-serif;letter-spacing:0;color:#9baea7;margin-top:8px}.hero-visual figcaption{display:flex;align-items:center;gap:15px;border-top:1px solid #273434;padding:18px 25px;font:8px var(--mono);letter-spacing:.8px;color:#b8c8c1}.visual-line{height:1px;background:#536452;flex:1}.stat-strip{display:grid;grid-template-columns:1fr 1fr 1fr 1.2fr;padding-block:25px;border-block:1px solid var(--line);gap:26px;align-items:center}.stat-strip>div{display:flex;gap:15px;align-items:center}.stat-strip strong{font-size:35px;line-height:1;font-weight:500;letter-spacing:-1.5px}.stat-strip span{font-size:11px;color:var(--muted);max-width:105px;line-height:1.5}.stat-strip p{font-size:12px;color:var(--muted);margin:0;border-left:1px solid var(--line);padding-left:28px}.section{padding-block:78px}.section-heading{display:flex;justify-content:space-between;gap:50px;align-items:flex-end;margin-bottom:38px}.section-heading .eyebrow{margin-bottom:17px}h2{font-size:clamp(30px,3.3vw,45px);font-weight:550;line-height:1.15;letter-spacing:-1.8px;margin:0}.section-heading>p{max-width:360px;margin:0;color:var(--muted);font-size:14px}h3{font-size:20px;line-height:1.35;font-weight:600;letter-spacing:-.6px}.task-tabs{display:flex;border-bottom:1px solid var(--line);gap:8px;overflow:auto;scrollbar-width:thin}.task-tabs button{flex:1;white-space:nowrap;padding:18px 12px;border:0;border-bottom:3px solid transparent;background:none;font-size:12px;font-weight:600;display:flex;align-items:center;justify-content:center;gap:10px}.task-tabs button span{font:10px var(--mono);color:var(--muted)}.task-tabs button i{font:8px var(--mono);color:var(--green);background:#e2ebd4;padding:2px 4px;border-radius:2px}.task-tabs button[aria-selected=true]{border-color:var(--green);background:#e9ede3;color:var(--green)}.experiment-stage{display:grid;grid-template-columns:minmax(0,2.2fr) minmax(255px,1fr);border:1px solid var(--line);border-top:0;border-radius:0 0 8px 8px;overflow:hidden;background:var(--paper)}.player-area{min-width:0;display:flex;flex-direction:column;background:var(--dark);color:#dce8e1}.player-toolbar{display:flex;justify-content:space-between;align-items:center;padding:14px 20px;border-bottom:1px solid #263434;gap:10px}.player-toolbar>span{font:8px var(--mono);letter-spacing:1px;color:#a8bdb4}.outcome-switch{display:flex;gap:2px;padding:3px;background:#1d2a2e;border-radius:5px}.outcome-switch button{background:transparent;border:0;font-size:10px;padding:5px 13px;color:#b6c5bd;border-radius:3px}.outcome-switch button[aria-pressed=true]{background:var(--lime);color:var(--ink)}.outcome-switch button[data-outcome=failure][aria-pressed=true]{background:#f5be9f}video{width:100%;display:block;aspect-ratio:16/9;background:#091019}.player-footer{display:flex;gap:15px;justify-content:space-between;padding:15px 20px;font:9px var(--mono);color:#a8bdb4;margin-top:auto;align-items:center}.player-footer>a{flex-shrink:0;color:var(--lime)}.task-brief{padding:28px}.task-brief .eyebrow{font-size:9px;margin-bottom:18px}.task-brief h3{font-size:29px;font-weight:500;line-height:1.15;margin:0 0 18px;letter-spacing:-1px}.task-brief>p:not(.eyebrow){font-size:12px;color:var(--muted)}dl{margin:22px 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p{font-size:12px;max-width:390px;color:#adbbb7}.evidence-band{background:#e9ede4;border-block:1px solid var(--line)}.results-layout{display:grid;grid-template-columns:1.8fr 1fr;gap:80px}.chart-heading{display:flex;justify-content:space-between;align-items:center}.chart-heading h3{font-size:13px;margin:0}.legend{display:flex;gap:17px;font-size:10px;color:var(--muted)}.legend i{display:inline-block;width:8px;height:8px;margin-right:5px;border-radius:2px}.jev-key{background:var(--green)}.rule-key{background:#a9b99a}.result-row{margin-top:24px}.result-name{font-size:12px;font-weight:600;margin-bottom:9px}.bars{display:grid;grid-template-columns:minmax(0,1fr) 38px;gap:5px 12px;align-items:center}.bar-track{height:7px;background:#d6dfcf;border-radius:2px;overflow:hidden}.bar{height:100%;background:var(--green)}.bar.rule{background:#a9b99a}.bars>span{font:10px var(--mono);color:var(--muted)}.finding{background:var(--green);color:#f0f5e8;padding:30px;position:relative;overflow:hidden;border-radius:7px;align-self:start}.finding-number{display:block;font-size:64px;font-weight:300;letter-spacing:-4px;color:#b8d389;line-height:1;margin-bottom:35px}.finding .eyebrow{color:#d2e5ae;font-size:9px;margin-bottom:15px}.finding h3{font-size:26px;line-height:1.3;font-weight:500;margin:0}.finding p:not(.eyebrow){color:#d0ded2;font-size:12px;margin-block:19px 25px}.finding a{color:var(--lime)}details{border-block:1px solid var(--line);margin-top:35px}summary{padding:19px 0;cursor:pointer;font-size:12px;font-weight:600}summary>span{float:right;font:10px var(--mono);font-weight:400;color:var(--muted);padding-top:3px}.table-scroll{overflow-x:auto}table{width:100%;border-collapse:collapse;font-size:12px;text-align:left}th{font:9px var(--mono);text-transform:uppercase;letter-spacing:.7px;color:var(--muted)}th,td{padding:16px 12px;border-bottom:1px solid var(--line)}td:nth-child(2){color:var(--green);font-weight:600}#challenge-failures td:last-child{min-width:260px;font-size:11px;color:var(--muted)}#challenge-failures td:first-child{min-width:140px}.resource-links{display:flex;flex-wrap:wrap;gap:24px;font-size:11px;color:var(--green);margin-top:22px}.failure-grid{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line);border-radius:6px;overflow:hidden}.failure-grid article{padding:28px;display:flex;flex-direction:column;align-items:flex-start}.failure-grid article+article{border-left:1px solid var(--line)}.failure-index{font:9px var(--mono);letter-spacing:1px;color:var(--orange)}.failure-grid h3{font-size:25px;font-weight:500;line-height:1.2;margin:23px 0 10px}.failure-grid p{font-size:12px;color:var(--muted);margin-bottom:25px}.boundary{margin-top:auto;padding-top:12px}.boundary strong{font-size:27px;font-weight:500;letter-spacing:-1px;display:block}.boundary small{font-size:17px}.boundary>span{display:block;font:9px var(--mono);color:var(--muted);margin-top:8px}.failure-grid button{margin-top:24px}.method-section{border-top:1px solid var(--line)}.pipeline{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}.pipeline article{border-top:2px solid var(--green);padding-top:22px}.pipeline span{font:9px var(--mono);letter-spacing:1px;color:var(--green)}.pipeline h3{font-size:18px;margin:20px 0 10px}.pipeline p{font-size:12px;color:var(--muted);max-width:230px}.method-limit{font-size:11px;color:var(--muted);border-top:1px solid var(--line);padding-top:20px;margin-top:30px}.start{border-top:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr;gap:65px;align-items:center}.start p:not(.eyebrow){font-size:13px;color:var(--muted);margin-block:20px}.terminal{background:var(--dark);border-radius:8px;overflow:hidden;color:#dbe6dc;min-width:0}.terminal>div{padding:18px 23px;border-bottom:1px solid #283434;display:flex;gap:6px;align-items:center}.terminal>div>span{height:6px;width:6px;border-radius:50%;background:#6d8177}.terminal small{font:8px var(--mono);color:#b7c7be;margin-left:auto;letter-spacing:1px}pre{font:11px/2 var(--mono);overflow:auto;padding:12px 24px 24px}code>span{color:#88a18e}footer{border-top:1px solid var(--line);padding-block:30px;display:flex;align-items:center;gap:40px}footer>.brand{font-size:28px}.footer-dot{color:var(--green);margin-left:-9px}footer p{font-size:10px;color:var(--muted)}footer>div{margin-left:auto;display:flex;gap:22px;flex-wrap:wrap;justify-content:flex-end;font-size:11px}footer small{width:100%;text-align:right;font-size:9px;color:var(--muted)}
@media(min-width:1500px){.hero{padding-block:90px 75px}}@media(max-width:1050px){.wrap{padding-inline:30px}.brand-sub{display:none}.hero{gap:30px}h1{font-size:75px}.hero-actions{gap:15px}.hero-description{font-size:16px}.results-layout{gap:40px}.task-brief{padding:23px}.task-tabs button{gap:7px;padding-inline:10px}.task-tabs button span{display:none}.stat-strip{gap:18px}.stat-strip strong{font-size:29px}.stat-strip>div{gap:10px}.failure-grid article{padding:22px}.failure-grid h3{font-size:23px}}
@media(max-width:760px){.wrap{padding-inline:22px}nav{height:76px}.nav-links{gap:16px;font-size:11px}.repo-link{display:none}.hero{grid-template-columns:1fr;padding-block:46px 35px;gap:34px}.hero-copy{max-width:550px}h1{font-size:78px}.hero-visual{max-width:550px}.hero-visual img{max-height:310px;object-fit:contain}.stat-strip{grid-template-columns:repeat(3,1fr);gap:16px;padding-block:22px}.stat-strip p{grid-column:1/-1;padding:14px 0 0;border-left:0;border-top:1px solid var(--line);font-size:11px}.stat-strip p br{display:none}.stat-strip>div{align-items:flex-start;flex-direction:column;gap:8px}.stat-strip span{max-width:none;font-size:10px}.section{padding-block:48px}.section-heading{display:block;margin-bottom:27px}.section-heading>p{margin-top:20px;max-width:550px;font-size:13px}h2{font-size:35px}.task-tabs{gap:0}.task-tabs button{flex:none;padding-inline:15px;min-height:55px}.experiment-stage{grid-template-columns:1fr}.task-brief{padding:25px}.task-brief h3{font-size:28px}.task-brief>p:not(.eyebrow){font-size:13px}.task-score{max-width:260px}dl{max-width:400px}.results-layout{grid-template-columns:1fr;gap:30px}.finding-number{font-size:40px;margin-bottom:22px}.finding h3{max-width:450px}.finding{padding:25px}.failure-grid{grid-template-columns:1fr}.failure-grid article{padding:26px}.failure-grid article+article{border-left:0;border-top:1px solid var(--line)}.failure-grid h3 br{display:none}.failure-grid h3{margin-top:17px}.failure-grid p{margin-bottom:10px}.pipeline{grid-template-columns:1fr 1fr;gap:26px}.pipeline h3{font-size:17px}.start{grid-template-columns:1fr;gap:30px}summary>span{float:none;display:block;margin:7px 0 0 17px;font-size:9px}footer{flex-wrap:wrap;gap:15px 25px}footer>div{margin:0;justify-content:flex-start;width:100%}footer small{text-align:left}.player-toolbar{padding-inline:13px}.player-footer{font-size:8px;padding-inline:13px}.missing-video h3{font-size:18px}.missing-video{min-height:260px}.missing-video p{font-size:11px}}
@media(max-width:380px){nav{gap:10px}.nav-links{gap:10px;font-size:10px}.brand{font-size:22px;gap:7px}.brand-mark{width:29px;height:29px}.hero-actions{align-items:flex-start;flex-direction:column}h1{font-size:68px}.pipeline{grid-template-columns:1fr}.player-toolbar>span{font-size:7px}.outcome-switch button{padding-inline:9px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}