@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;450;500;550;600;650;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root{font-family:'DM Sans',sans-serif;color:#22392e;background:#f3f3ed;font-synthesis:none;--ink:#22392e;--muted:#80877e;--line:#dce0d5;--green:#4b7558;--accent:#dcebb9;--mono:'Consolas','SFMono-Regular',monospace}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0}button,input,select{font:inherit}button,a,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,canvas:focus-visible,select:focus-visible,input:focus-visible{outline:3px solid #d39b42;outline-offset:4px}button{color:inherit}button:disabled{opacity:.35;cursor:default}[hidden]{display:none!important}.page-shell{max-width:1536px;margin:auto;padding:0 46px}.site-header{height:89px;display:flex;align-items:center;border-bottom:1px solid var(--line);gap:50px}.wordmark{display:flex;align-items:center;font-family:'Space Grotesk',sans-serif;font-size:15px;font-weight:700;letter-spacing:.6px;gap:11px;white-space:nowrap}.brand-icon{display:inline-flex;align-items:center;justify-content:center;width:31px;height:31px;border:1.5px solid var(--ink);font-size:22px;letter-spacing:-5px;padding-right:5px;line-height:1;transform:rotate(-5deg);border-radius:7px}.brand-icon span{font-weight:400}.edition{font-size:11px;color:#8b9388;font-weight:500;letter-spacing:0;margin-left:3px}.site-header nav{display:flex;height:100%;align-items:center;gap:30px;font-size:12px;color:#8a9186}.site-header nav a{height:100%;display:flex;align-items:center;gap:7px;position:relative}.site-header nav .active{color:var(--ink)}.site-header nav .active:after{content:'';height:2px;background:var(--ink);bottom:-1px;position:absolute;left:0;right:0}.header-note{margin-left:auto;font-size:11px;color:#687565;display:flex;align-items:center;gap:7px}.header-note i,.graph-header i{display:inline-block;width:5px;height:5px;background:#6a8f54;border-radius:50%}.intro{display:flex;justify-content:space-between;gap:20px;align-items:center;padding:43px 0 35px}.eyebrow{font-family:var(--mono);font-size:10px;font-weight:400;letter-spacing:1.2px;margin:0 0 14px;color:#7a8773;display:flex;gap:8px;align-items:center}.eyebrow>span{height:5px;width:5px;background:#9cb477}.intro h1{font-family:'Space Grotesk',sans-serif;font-size:clamp(31px,3.1vw,47px);letter-spacing:-2px;line-height:1.18;font-weight:500;margin:0}.intro h1 em{font-style:normal;color:#7b9169}.mobile-break{display:none}.intro-description{font-size:12px;line-height:1.8;margin:12px 0 0;color:#576653;min-width:285px}.intro-description>span{color:#92998c}.playground{display:grid;grid-template-columns:minmax(0,1fr) 354px;gap:22px;scroll-margin-top:20px}.game-panel{border:1px solid #d5dccd;border-radius:13px;overflow:hidden;background:#fbfcf6;min-width:0;display:flex;flex-direction:column}.panel-heading{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 18px;height:58px;background:#fbfcf6;border-bottom:1px solid #d5dccd}.panel-label{font-family:var(--mono);font-size:9px;letter-spacing:.6px;display:flex;gap:7px;align-items:center;white-space:nowrap}.live-dot{width:6px;height:6px;border-radius:50%;background:#7eaa63;box-shadow:0 0 0 3px #7eaa6318;margin-right:3px}.muted{color:#8d9785}.mode-switch{display:flex;padding:3px;border:1px solid #e3e7dc;background:#f1f3eb;border-radius:7px;gap:2px}.mode-switch button{border:0;background:transparent;padding:6px 11px;font-size:11px;white-space:nowrap;border-radius:4px;color:#89927e}.mode-switch .selected{background:white;box-shadow:0 1px 3px #263c1715;color:var(--ink)}.mode-switch button span{margin-left:4px;color:#789b60}.game-stage{position:relative;height:516px;overflow:hidden;background:#e8efdc;isolation:isolate}#world{width:100%;height:100%;display:block;touch-action:manipulation;cursor:pointer;outline-offset:-4px}.game-hud{position:absolute;inset:25px 27px auto;display:flex;justify-content:space-between;pointer-events:none}.game-hud>div{display:flex;flex-direction:column;gap:4px}.hud-label{font-family:var(--mono);font-size:8px;letter-spacing:1.1px;color:#76846c}.game-hud strong{font-family:'Space Grotesk',sans-serif;font-size:34px;line-height:1;font-weight:500;letter-spacing:-1px}.game-hud .hud-best{align-items:flex-end}.hud-best strong{font-size:22px;color:#798d67}.coordinate{position:absolute;font-family:var(--mono);font-size:11px;letter-spacing:.6px;color:#93a181;pointer-events:none}.top-coordinate{left:50%;top:32px;transform:translateX(-50%)}.game-overlay{position:absolute;left:50%;top:37%;transform:translate(-50%,-50%);text-align:center;width:90%;pointer-events:none}.overlay-kicker{font-family:var(--mono);font-size:9px;letter-spacing:1.5px;color:#7d8a6c}.game-overlay h2{font-family:'Space Grotesk',sans-serif;font-size:49px;letter-spacing:-2.5px;font-weight:500;margin:8px 0 9px}.game-overlay p{font-size:11px;margin:0 0 22px;color:#7a876d}.primary-button{pointer-events:auto;border:1px solid #294734;background:#294734;color:#f1f4df;padding:12px 21px;border-radius:6px;font-size:12px;box-shadow:0 3px 0 #1a322420}.primary-button:hover{background:#3b5d45}.primary-button>span{margin-left:27px}.overlay-hint{display:block;font-size:10px;color:#8b967f;margin-top:14px}kbd{font-family:var(--mono);font-size:9px;border:1px solid #bfc8b580;border-bottom-width:2px;border-radius:3px;padding:2px 5px;line-height:1.4}.overlay-hint kbd{margin-left:4px}.stage-caption{position:absolute;bottom:66px;left:0;right:0;text-align:center;font-family:var(--mono);font-size:9px;letter-spacing:.4px;color:#849774;pointer-events:none}.paused-badge{position:absolute;top:82px;left:50%;transform:translateX(-50%);font-family:var(--mono);font-size:9px;letter-spacing:1px;background:#f6f8ecdd;border:1px solid #cad4bc;padding:8px 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var(--line);margin-top:18px;padding-top:15px;cursor:pointer;position:relative}.debug-toggle input{position:absolute;width:28px;height:16px;opacity:0}.debug-toggle input:focus-visible+.toggle-track{outline:2px solid #c9a35a;outline-offset:3px}.toggle-track{width:26px;height:14px;background:#e2e8d9;border-radius:9px;position:relative}.toggle-track:after{content:'';position:absolute;left:2px;top:2px;width:10px;height:10px;border-radius:50%;background:#fcfcf4;box-shadow:0 1px 2px #2c40142a;transition:transform .15s}.debug-toggle input:checked+.toggle-track{background:#7c9c68}.debug-toggle input:checked+.toggle-track:after{transform:translateX(12px)}.tiny-arrow{margin-left:auto;color:#9cab8c}.experiment-footer{display:flex;justify-content:space-between;align-items:center;gap:15px;font-family:var(--mono);font-size:8px;letter-spacing:.25px;color:#96a08b;padding:14px 1px 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code{font-size:11px;color:#4f6c40}.weight-filters{display:flex;justify-content:space-between;gap:15px;margin-bottom:15px;font-size:11px;align-items:center}.weight-filters label{display:flex;align-items:center;gap:10px;color:#839475}.weight-filters select{border:1px solid #cfd9c2;border-radius:4px;background:#fffef7;color:#526b42;font-size:11px;padding:5px}.weight-filters a{color:#567343;font-size:10px}.weight-table-wrap{max-height:45vh;overflow:auto;border:1px solid #dde4d4;border-radius:5px}table{border-collapse:collapse;width:100%;font-family:var(--mono);font-size:10px}th{text-align:left;background:#e8efdd;font-size:9px;position:sticky;top:0;z-index:1}td,th{padding:10px 12px;border-bottom:1px solid #e2e8d9}td{color:#7a8d69}td:nth-child(4){font-size:9px;line-height:1.6;min-width:200px;max-width:340px}td:last-child{color:#456632}.dialog-footnote{font-size:10px;color:#9aa88d;margin:16px 0 0}#load-error{position:fixed;inset:auto 20px 20px;background:#6c392a;color:white;padding:18px;border-radius:8px;z-index:20;font-size:13px}
@media(min-width:1450px){.game-stage{height:550px}.inspector{padding-top:25px}.model-metrics{margin:25px 0}.signal-list{gap:11px}#network-graph{height:115px}.state-block{margin-top:20px}.debug-toggle{margin-top:20px}}
@media(max-width:1150px){.page-shell{padding:0 28px}.intro h1{font-size:35px}.playground{grid-template-columns:minmax(0,1fr) 325px;gap:16px}.inspector{padding:21px 18px 15px}.muted{display:none}.intro-description{font-size:11px;min-width:250px}.architecture{gap:30px;grid-template-columns:225px 1fr}.flow-diagram{gap:9px}.flow-diagram .flow-network{padding:15px 12px}.flow-diagram strong{font-size:12px}.flow-diagram small{font-size:8px}.experiment-footer>span:nth-child(2){font-size:7px}.experiment-footer b{margin:0 2px}}
@media(max-width:900px){.site-header{gap:30px}.header-note{display:none}.site-header nav{margin-left:auto}.intro{display:block;padding-top:30px}.intro-description{margin:15px 0 0;font-size:12px}.intro-description br{display:none}.intro-description>span{margin-left:5px}.playground{grid-template-columns:minmax(0,1fr) 300px;gap:13px}.game-hud{inset:23px 18px auto}.game-stage{height:516px}.panel-heading{padding:10px 12px}.panel-label{font-size:8px}.mode-switch button{font-size:9px;padding:6px 7px}.key-hint{display:none}.game-overlay h2{font-size:42px}.game-overlay p{max-width:200px;margin:0 auto 20px;line-height:1.6}.stage-caption{font-size:8px}.inspector h2{font-size:15px}.signal-row{grid-template-columns:105px 1fr 27px;gap:8px}.architecture{grid-template-columns:1fr;gap:20px;margin-top:40px}.architecture-intro>p:not(.eyebrow){max-width:500px}.architecture-intro h2 br{display:none}.architecture-body{max-width:none}.flow-diagram{justify-content:space-around}.experiment-footer>span:nth-child(2){display:none}}
@media(max-width:680px){.page-shell{padding:0 18px}.site-header{height:70px;gap:10px}.wordmark{font-size:12px;letter-spacing:.3px;gap:8px}.brand-icon{width:27px;height:27px;font-size:19px}.edition{font-size:9px;margin-left:0}.site-header nav{gap:15px;font-size:10px}.site-header nav .active{display:none}.intro{padding:29px 0 25px}.intro .eyebrow{font-size:8px;letter-spacing:1px}.intro h1{font-size:37px;letter-spacing:-1.7px}.mobile-break{display:block}.intro-description{line-height:1.7;max-width:340px;font-size:11px;margin-top:12px}.intro-description>span{display:block;margin:0}.playground{grid-template-columns:1fr;gap:18px}.game-stage{height:490px}.panel-heading{height:53px;padding:10px 14px}.panel-label{font-size:9px}.mode-switch button{font-size:10px;padding:6px 9px}.game-overlay h2{font-size:44px}.game-overlay p{max-width:none;font-size:10px}.stage-caption{font-size:8px;bottom:60px}.top-coordinate{top:29px;font-size:9px}.game-hud strong{font-size:30px}.hud-best strong{font-size:20px}.game-toolbar{padding:0 13px;height:47px}.key-hint{display:flex;font-size:8px}.key-hint kbd{font-size:8px}.inspector{padding:22px}.inspector h2{font-size:19px}.model-metrics{margin:22px 0}.model-metrics strong{font-size:31px}#network-graph{height:130px}.signal-row{font-size:11px;grid-template-columns:140px 1fr 32px}.signal-list{gap:11px}.state-grid{grid-template-columns:repeat(4,1fr);gap:10px}.state-grid strong{font-size:12px}.state-grid small{display:block;margin-top:4px}.debug-toggle{margin-top:20px;padding-top:18px}.experiment-footer{font-size:7px;gap:6px}.architecture{margin-top:35px;padding:28px 0}.architecture h2{font-size:25px}.architecture-notes{gap:20px;grid-template-columns:1fr;margin-top:25px}.flow-diagram{gap:8px;flex-wrap:wrap;justify-content:flex-start}.flow-diagram>div{padding:12px 0}.flow-diagram strong{font-size:11px}.flow-diagram small{font-size:8px}.flow-diagram>div>span{font-size:7px}.flow-diagram .flow-network{padding:12px 10px}.flow-arrow{font-size:13px}.flow-diagram>div:last-child{width:100%;padding-left:0}.flow-diagram>.flow-arrow:nth-last-child(2){display:none}.feedback-line{margin:0 10px;font-size:10px}.feedback-line span{font-size:6px;letter-spacing:.4px}.site-footer{font-size:7px;letter-spacing:0;gap:20px}.site-footer>span:first-child>span{display:none}.site-footer>span:last-child{font-size:7px}dialog{padding:20px}.dialog-header h2{font-size:22px}.weight-filters{align-items:start}.weight-filters a{max-width:135px;text-align:right;line-height:1.6}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
.game-stage{flex:1;min-height:516px}#world{image-rendering:pixelated}.cpu-frame-surface{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;image-rendering:pixelated}.frame-readout{display:flex;gap:14px;align-items:center;padding:11px 17px;border-top:1px solid #d5dccd;background:#f8faf0;min-height:52px}.frame-action{border:1px solid #c7d5b6;background:#eaf1dc;border-radius:5px;font-size:10px;padding:7px 10px;white-space:nowrap}.frame-action:hover{background:#dce9c7}#game-status{font-size:10px;color:#8a977e}.frame-score{margin-left:auto;font-family:var(--mono);font-size:8px;color:#8b9b7b;white-space:nowrap}.frame-score strong{font-size:11px;font-weight:400;color:#587441;margin-left:3px}.frame-score>span{margin-left:10px}.renderer-block{border-top:1px solid var(--line);margin-top:17px;padding-top:16px}.neural-badge{color:#6b9250}.renderer-stats{display:flex;gap:28px;margin-bottom:12px}.renderer-stats>div{display:flex;flex-direction:column;gap:5px}.renderer-stats strong{font-family:'Space Grotesk',sans-serif;font-size:21px;letter-spacing:-.7px;font-weight:500}.renderer-stats span{font-family:var(--mono);font-size:8px;color:#91a080}.renderer-meta{display:flex;justify-content:space-between;gap:8px;font-family:var(--mono);font-size:8px;color:#6e865b}.renderer-block p{font-size:9px;color:#91a080;line-height:1.6;margin:10px 0 0}.renderer-block a{color:#647e50}.weight-filters{flex-wrap:wrap}.weight-filters label{white-space:nowrap}
@media(max-width:1100px){.frame-score>span{display:none}#game-status{font-size:9px}.frame-readout{gap:8px}}
@media(max-width:680px){.game-stage{flex:none;min-height:460px;height:460px}.frame-readout{padding:10px 12px;gap:8px}.frame-score{font-size:7px}#game-status{font-size:8px}.renderer-stats{gap:40px}.renderer-meta{font-size:9px}.renderer-block p{font-size:10px}.renderer-stats strong{font-size:25px}}
/* Reusable cartridge controls share the existing warm, restrained palette. */
.engine-controls{display:flex;align-items:center;gap:24px;margin:0 0 16px;flex-wrap:wrap}
.engine-controls label{display:flex;align-items:center;gap:10px;font-size:10px;letter-spacing:1.3px;color:#66765e;font-weight:700}
.engine-controls select{background:#fbfaf4;border:1px solid #d8decd;color:#254437;border-radius:8px;padding:10px 30px 10px 12px;font-weight:500;font-size:14px;font-family:inherit;min-height:44px}
.replay-controls{margin-left:auto;display:flex;gap:8px}
.replay-controls button{border:1px solid #d8decd;border-radius:8px;background:#fbfaf4;padding:10px 16px;color:#354e3e;min-height:44px;cursor:pointer}
.replay-controls button:disabled{opacity:.4;cursor:default}
.replay-controls button[aria-pressed=true]{color:#a44936;border-color:#c99077}
.direction-pad{display:flex;gap:12px;padding:12px 18px;background:#eef1e6}
.direction-pad[hidden]{display:none}
.direction-pad button{flex:1;touch-action:none;user-select:none;border:1px solid #cbd7bf;border-radius:10px;background:#fbfaf4;color:#284639;font-size:25px;min-height:56px}
.direction-pad button:active{background:#c6d8b2}.direction-pad span{font-size:12px;margin-left:8px}
.perf-readout{font-variant-numeric:tabular-nums!important;font-size:10px!important;margin-top:5px!important;color:#617254}
@media(max-width:600px){.engine-controls{gap:10px}.engine-controls label{font-size:9px;gap:6px}.engine-controls select{max-width:160px;padding-right:20px}.replay-controls{margin-left:0;width:100%}.replay-controls button{flex:1}.direction-pad{padding:10px}.direction-pad span{font-size:11px}.key-hint{max-width:150px;text-align:right}}
.camera-controls{display:flex;align-items:center;justify-content:center;gap:14px;padding:8px;background:#e7ede2;border-top:1px solid #d5dccd;font-family:var(--mono);font-size:10px;color:#60775d}
.camera-controls button{background:#f7faf1;border:1px solid #c6d3bc;border-radius:8px;min-height:40px;min-width:48px;font-size:24px;color:#304c3c}
.camera-controls output{min-width:34px;text-align:center}.camera-controls>span:last-child{color:#8c9a83}
.direction-pad.pad-3d{display:grid;grid-template-columns:repeat(3,52px) 1fr;grid-template-rows:48px 48px;gap:6px;justify-content:center;padding:10px 18px}
.pad-3d button{min-height:48px;font-size:24px}.pad-3d #move-up{grid-area:1/2}.pad-3d #move-left{grid-area:2/1}.pad-3d #move-down{grid-area:2/2}.pad-3d #move-right{grid-area:2/3}.pad-3d #jump{grid-area:1/4/3/5;background:#d6e8bf;margin-left:12px}
.pad-3d #move-up span,.pad-3d #move-down span{display:none}.pad-3d #jump span{display:block;margin:3px 0 0;font-size:12px}.pad-3d button:active{background:#bad2a4}
@media(max-width:400px){.direction-pad.pad-3d{grid-template-columns:repeat(3,46px) 1fr;padding:10px}.intro h1{font-size:33px}.camera-controls{gap:10px}}
.scene-3d .game-stage{min-height:400px;height:480px}
@media(max-width:680px){.scene-3d .game-stage{flex:none;min-height:0;height:auto;aspect-ratio:1}.scene-3d #game-status{display:none}.scene-3d .frame-score>span{display:inline}}
.training-lab{border:1px solid #d6ddcd;background:#f9faf3;border-radius:12px;padding:16px 18px;margin-bottom:18px}
.text-world{border:1px solid #c7d6bb;background:#f4f8eb;border-radius:12px;padding:18px;margin-bottom:18px}
.game-panel .text-world{border-radius:0;margin:0;border-width:1px 0}
.text-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}.text-heading label{font-size:12px;font-weight:600;color:#294734}.text-heading span{font:9px var(--mono);color:#6d805d}
.prompt-feedback{display:flex;align-items:center;justify-content:space-between;gap:16px}
.text-world form{display:flex;gap:8px;margin:12px 0}.text-world input[type=text]{min-width:0;flex:1;border:1px solid #bacbad;background:#fffef8;border-radius:8px;padding:13px 14px;font:inherit;color:#284639;font-size:16px;min-height:48px}.text-world input[type=text]:focus{outline:2px solid #749c59;outline-offset:2px}
.text-world button{min-height:44px;border:1px solid #cbd7bf;border-radius:8px;padding:9px 13px;background:#fbfcf6;color:#39573d;font:inherit;font-size:12px;cursor:pointer}.text-world #apply-prompt{background:#294734;color:#f4f7e9;padding:10px 20px}.text-world button:disabled{opacity:.5;cursor:wait}.text-world button:hover{filter:brightness(.96)}
.prompt-examples{display:flex;gap:6px;flex-wrap:wrap}.text-world p{font-size:12px;line-height:1.65;color:#617357;margin:10px 0 0}.prompt-feedback p{color:#3b603f;min-height:20px}.prompt-feedback label{display:flex;align-items:center;gap:6px;font-size:11px;color:#58704f;white-space:nowrap}.text-world input[type=checkbox]{accent-color:#41683b;width:17px;height:17px}.text-world details{font-size:11px;color:#6d805e;margin-top:10px;line-height:1.7}.text-world summary{cursor:pointer}.text-world details a{color:#345f3b}
@media(max-width:680px){.text-world{padding:13px}.text-heading span{font-size:8px;max-width:105px;text-align:right;line-height:1.6}.text-world #apply-prompt{padding:10px 12px}.text-world p{font-size:11px}.prompt-feedback{display:block}.prompt-feedback label{margin-top:6px;min-height:28px}.prompt-examples{flex-wrap:nowrap;overflow:auto;padding-bottom:3px}.prompt-examples button{font-size:11px;padding:8px 10px;flex-shrink:0}}
.lab-label{display:flex;justify-content:space-between;align-items:center;gap:15px}.lab-label .eyebrow{margin:0}.lab-label a{font-size:11px;color:#708260}
.experiment-tabs{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0 8px}.experiment-tabs button{min-height:42px;border-radius:7px;border:1px solid #d4ddc7;background:#f1f4e9;color:#53674a;padding:9px 14px;font-size:12px}
.experiment-tabs button[aria-pressed=true]{background:#294734;color:#f5f6e6;border-color:#294734}.training-lab p{font-size:12px;line-height:1.7;color:#72806a;margin:8px 0 0;max-width:1000px}
.training-results{padding:38px 0 0;scroll-margin-top:20px}.training-results h2{font-family:'Space Grotesk',sans-serif;font-weight:500;font-size:29px;letter-spacing:-1px;margin:0 0 20px}.training-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.training-cards article{padding:22px;border:1px solid #d6ddce;background:#f9faf3;border-radius:10px}.training-cards article>span{font-family:var(--mono);font-size:9px;color:#80916f;letter-spacing:.7px}.training-cards h3{font-size:23px;letter-spacing:-.7px;font-weight:500;margin:15px 0}.training-cards p{font-size:12px;line-height:1.7;color:#64715c}.training-cards small{font-size:10px;line-height:1.7;color:#859079;display:block}.training-cards .failed-experiment{background:#f7f1e9;border-color:#e3d6c6}.failed-experiment h3{color:#996349}.training-footnote{font-size:11px;line-height:1.8;color:#839076}.training-footnote a{color:#486c4d}
@media(max-width:680px){.training-lab{padding:13px}.experiment-tabs{gap:6px}.experiment-tabs button{font-size:10px;padding:8px 10px;min-height:44px}.training-lab p{font-size:10px}.training-cards{grid-template-columns:1fr}.training-results h2{font-size:25px}.training-cards h3{font-size:24px}.training-results{padding-top:25px}}