@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=DM+Sans:wght@400;500;600;700&family=Noto+Sans+KR:wght@400;500;600;700&family=Noto+Serif+KR:wght@400;500;600&display=swap');
:root{--paper:#eeede6;--ink:#272a25;--muted:#6c7065;--line:#d4d6cb;--accent:#b94b2e;--orange:#e8835d;--dark:#171c19;--serif:'Noto Serif KR',Georgia,serif;--sans:'DM Sans','Noto Sans KR',sans-serif;--mono:'DM Mono',monospace}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:14px/1.6 var(--sans)}button,input,select,textarea{font:inherit}button,a,input,select,summary,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer;color:inherit}a{color:inherit;text-decoration:none}button{border:0}button:disabled{cursor:default;opacity:.5}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible,textarea:focus-visible,canvas:focus-visible{outline:2px solid var(--accent);outline-offset:4px}button{transition:background .16s,color .16s}button:hover{filter:brightness(.96)}[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}
.masthead{height:88px;margin:0 4.6%;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:24px}.wordmark{font-family:Georgia,serif;font-size:33px;letter-spacing:-1.5px;font-weight:600;display:flex;align-items:center;white-space:nowrap}.brand-mark{color:var(--accent);font-family:var(--sans);font-size:37px;font-weight:400;margin-right:11px}.brand-period{color:var(--accent)}.header-note{font:10px var(--mono);letter-spacing:2px;color:var(--muted)}.text-button{font-size:12px;background:transparent;padding:8px 0}.text-button span{margin-left:20px}main{max-width:1800px;margin:auto;padding:0 4.6%}.intro{display:flex;align-items:flex-end;justify-content:space-between;padding:39px 0 31px;gap:24px}.eyebrow{font:10px/1.6 var(--mono);letter-spacing:1.4px;color:var(--muted);margin:0 0 14px}.tiny-cross{color:var(--accent);font-size:18px;vertical-align:-1px;margin-right:8px}h1{font-size:35px;line-height:1.45;letter-spacing:-1.8px;font-weight:500;margin:0}h1 em{font-family:var(--serif);font-style:normal;font-weight:400}h2,h3,p{margin-top:0}.intro-copy{font-size:13px;color:var(--muted);margin:0 3px 6px 0;line-height:1.9}
.lab{display:grid;grid-template-columns:minmax(0,1fr) 322px;border:1px solid var(--line);background:#f3f2eb}.observation{min-width:0}.canvas-heading{height:49px;background:var(--dark);color:#c5cfc4;border-bottom:1px solid #30372f;display:flex;align-items:center;justify-content:space-between;padding:0 24px;font-size:11px;gap:10px}.canvas-heading>div{display:flex;align-items:center;gap:9px}.live-dot{width:6px;height:6px;border-radius:50%;background:#d2e5b1;box-shadow:0 0 8px #c1d6a73b}.live-dot.paused{background:#8a9288;box-shadow:none}.slash{color:#657162;margin:0 3px}.mono{font:9px var(--mono);letter-spacing:1.3px;color:#919d8e}.canvas-wrap{height:510px;background:var(--dark);position:relative;overflow:hidden}canvas{width:100%;height:100%;display:block;touch-action:pan-y}.canvas-wrap.perturb canvas{cursor:crosshair;touch-action:none}.coordinate{position:absolute;left:24px;top:20px;font:9px/1.8 var(--mono);letter-spacing:1px;color:#8a9a89;pointer-events:none}.coordinate span{color:#607160}.canvas-tools{position:absolute;right:19px;top:19px;display:flex;flex-direction:column;gap:3px;background:#202821e8;padding:4px;border:1px solid #394637;border-radius:4px}.canvas-tool{width:29px;height:29px;background:transparent;color:#a4b0a1;font:21px var(--sans);border-radius:2px}.canvas-tool.active{background:#cbd5ba;color:#20291e}.tool-separator{height:1px;background:#3a4537;margin:3px}.canvas-caption{position:absolute;bottom:21px;left:24px;font-size:10px;color:#98a393;pointer-events:none}.scale-bar{position:absolute;right:24px;bottom:20px;text-align:center;color:#80917b;font:8px var(--mono);pointer-events:none}.scale-bar span{display:block;height:5px;border:1px solid #71846b;border-top:0;width:65px;margin-bottom:5px}.transport{height:65px;background:#20261f;color:#d6dbcd;display:flex;align-items:center;justify-content:space-between;padding:0 20px;gap:10px;border-top:1px solid #333f30}.transport-main{display:flex;align-items:center;gap:18px}.play-button{background:#d8dfc6;color:#27321e;display:flex;align-items:center;gap:9px;padding:9px 15px;border-radius:3px;font-size:11px;font-weight:600;min-width:104px;justify-content:center}#play-icon{font:16px var(--sans)}.transport-button{background:none;color:#aebaa4;font-size:17px;padding:6px 0;white-space:nowrap}.transport-button span{font-size:10px;margin-left:3px}.speed-group{display:flex;gap:2px}.speed-group button{font:11px var(--mono);background:none;color:#9aa990;padding:6px 8px;border-radius:3px}.speed-group button.active{background:#3a4535;color:#e1e9d5}.metrics{display:grid;grid-template-columns:repeat(4,1fr);padding:22px 5px 23px}.metrics>div{border-right:1px solid var(--line);padding:0 21px}.metrics>div:last-child{border:0}.metric-label{display:block;font-size:10px;color:var(--muted);margin-bottom:5px}.metric-info{font-size:10px;cursor:help;margin-left:3px;color:#787f70}.metrics strong{font:25px var(--mono);font-weight:400;letter-spacing:-1px;display:block}.metrics small{font:8px var(--mono);color:#757e6d;display:block;margin-top:5px}
.controls{border-left:1px solid var(--line);padding:0 23px 17px;min-width:0}.panel-tabs{height:50px;border-bottom:1px solid var(--line);display:flex;gap:25px;margin-bottom:23px}.panel-tabs button{background:none;padding:0;border-bottom:2px solid transparent;font-size:12px;white-space:nowrap;color:var(--muted)}.panel-tabs button[aria-selected=true]{color:var(--ink);border-bottom-color:var(--ink);font-weight:600}.panel-tabs button span{font:9px var(--mono);background:#dfe2d5;padding:1px 4px;margin-left:3px}.control-section{margin-bottom:22px}.section-label{font-size:11px;font-weight:600;letter-spacing:-.2px;margin-bottom:11px;display:flex;align-items:center;gap:9px}.section-label>span{font:9px var(--mono);color:#848b7b;letter-spacing:0}select{background:#eeeee5;color:var(--ink);border:1px solid #cbd0bf;border-radius:3px;padding:10px 12px;width:100%;font-size:12px;cursor:pointer}.help{font-size:10px;line-height:1.8;color:var(--muted);margin:7px 0 0;word-break:keep-all}.slider-label{display:flex;justify-content:space-between;font-size:11px;margin:17px 0 7px}.slider-label output{font:11px var(--mono);color:#535f47;background:#e5e7dc;padding:1px 6px;border-radius:2px}input[type=range]{display:block;width:100%;height:16px;appearance:none;background:transparent;cursor:pointer;margin:0}input[type=range]::-webkit-slider-runnable-track{background:linear-gradient(to right,#5e6d4f 0%,#5e6d4f var(--fill,50%),#d8dcce var(--fill,50%),#d8dcce 100%);height:3px;border-radius:2px}input[type=range]::-webkit-slider-thumb{appearance:none;width:11px;height:11px;margin-top:-4px;border-radius:50%;background:#f5f4ec;border:2px solid #59694b;box-shadow:0 0 0 3px #f3f2eb}input[type=range]::-moz-range-track{background:#d8dcce;height:3px}input[type=range]::-moz-range-progress{background:#5e6d4f;height:3px}input[type=range]::-moz-range-thumb{width:9px;height:9px;border-radius:50%;background:#f5f4ec;border:2px solid #59694b}.rule-section{padding-bottom:16px;border-bottom:1px solid var(--line)}.advanced{margin-top:15px}.advanced summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;font-size:10px;color:var(--muted)}.advanced summary::-webkit-details-marker{display:none}.advanced[open] summary span{transform:rotate(45deg)}.seed-row{display:flex;gap:5px}input[type=number]{min-width:0;width:100%;background:#e9ece1;border:1px solid #cdd3c2;border-radius:3px;color:#526047;padding:8px 10px;font:12px var(--mono);appearance:textfield}input[type=number]::-webkit-inner-spin-button{appearance:none}.small-button{padding:7px 10px;background:#e1e6d7;font-size:10px;border-radius:3px;white-space:nowrap}#new-seed{font-size:20px;line-height:1;padding:5px 10px}.outline-button{width:100%;display:flex;justify-content:space-between;align-items:center;background:transparent;border:1px solid #b9c1ac;border-radius:3px;padding:10px 12px;font-size:11px;color:#4a5940}.outline-button span:first-child{font-size:16px}.panel-bottom{display:flex;gap:10px;margin-top:23px}.little-line{width:17px;height:1px;background:#a5ad96;margin-top:8px}.panel-bottom p{font-size:10px;color:#777f6e;line-height:1.9;margin:0}.primary-button{display:flex;width:100%;justify-content:space-between;background:#414e36;color:#f0f1e8;border-radius:3px;padding:10px 12px;font-size:11px;margin-top:8px}textarea{width:100%;resize:vertical;min-height:90px;border:1px solid #cbd0bf;background:#eeeee5;border-radius:3px;padding:10px;font-size:12px;color:var(--ink)}.record-list{max-height:380px;overflow-y:auto}.empty-state{padding:30px 10px;text-align:center;border:1px dashed #cbd0bf;color:var(--muted);font-size:11px;line-height:2}.empty-state span{display:block;font-size:27px;color:#7d8b70;margin-bottom:12px}.record{border-top:1px solid var(--line);padding:15px 0}.record-time{font:9px var(--mono);color:#747d6b;margin-bottom:5px}.record p{font-size:11px;white-space:pre-wrap;overflow-wrap:anywhere;margin:6px 0}.record-meta{font:9px var(--mono);color:var(--muted)}.record-actions{display:flex;gap:15px;justify-content:flex-end}.record-actions button{font-size:10px;background:none;padding:8px 0 0;color:#536544}.record-actions button:last-child{color:#9a6557}.file-actions{display:flex;flex-direction:column;align-items:flex-start;gap:5px;border-top:1px solid var(--line);margin-top:20px;padding-top:15px}.file-actions .text-button{font-size:10px}
.questions{display:grid;grid-template-columns:1.2fr 1fr 1fr 1fr;gap:24px;padding:36px 0 34px}.question-lead .eyebrow{font-size:8px;letter-spacing:1.1px}.question-lead h2{font-family:var(--serif);font-weight:500;font-size:19px;line-height:1.7;letter-spacing:-.8px;margin:11px 0 0}.experiment-card{border-left:1px solid var(--line);padding:0 0 0 23px}.experiment-number{font:9px var(--mono);letter-spacing:.8px;color:#7c856f}.experiment-card h3{font-size:12px;margin:15px 0 8px;font-weight:600}.experiment-card p{font-size:10px;line-height:1.9;color:var(--muted);word-break:keep-all;margin-bottom:0}footer{border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:16px;padding:21px 0 27px;font-size:9px;color:var(--muted)}footer>span:first-child{font-size:9px;letter-spacing:.4px}.footer-dot{padding:0 7px}footer a{font-family:var(--mono);font-size:8px}footer a:hover{color:var(--accent)}.toast{position:fixed;left:50%;bottom:25px;transform:translate(-50%,20px);opacity:0;pointer-events:none;background:#303b29;color:#f1f2e8;padding:12px 21px;max-width:90vw;width:max-content;border-radius:4px;font-size:12px;box-shadow:0 5px 25px #0002;z-index:10;transition:opacity .2s,transform .2s}.toast.visible{opacity:1;transform:translate(-50%,0)}dialog{max-width:580px;width:calc(100% - 32px);background:var(--paper);color:var(--ink);padding:40px;border:1px solid var(--line);border-radius:5px;max-height:85vh;overflow:auto}dialog::backdrop{background:#111a12aa;backdrop-filter:blur(5px)}.dialog-close{position:absolute;right:18px;top:13px;font-size:27px;background:none}.dialog-close:focus-visible{outline-offset:0}dialog h2{font:500 29px/1.7 var(--serif);letter-spacing:-1px;margin-bottom:25px}dialog p{font-size:12px;line-height:2;color:#5c6454}dialog details{border-block:1px solid var(--line);padding:14px 0;margin:20px 0}dialog summary{font-size:12px;cursor:pointer}dialog details p{font-size:11px;margin-top:15px}.source-link{color:var(--accent);font-size:11px}
@media(min-width:1600px){.canvas-wrap{height:580px}.lab{grid-template-columns:minmax(0,1fr) 345px}.controls{padding-inline:28px}.control-section{margin-bottom:26px}.help{font-size:11px}.slider-label{margin-top:23px}.intro{padding-block:45px 35px}h1{font-size:40px}}
@media(max-width:1050px){.lab{grid-template-columns:minmax(0,1fr) 290px}.controls{padding-inline:18px}.canvas-wrap{height:510px}.transport{padding:0 12px}.transport-main{gap:10px}.transport-button span{display:none}.metrics>div{padding:0 12px}.metrics strong{font-size:22px}.questions{gap:15px}.experiment-card{padding-left:15px}.header-note{display:none}}
@media(max-width:760px){.masthead{height:72px;margin:0 5%}.wordmark{font-size:28px}.brand-mark{font-size:29px}.text-button{font-size:10px}.text-button span{margin-left:6px}main{padding:0 5%}.intro{display:block;padding:26px 0 23px}h1{font-size:26px;letter-spacing:-1.3px}.intro-copy{font-size:11px;line-height:1.7;margin:12px 0 0}.intro-copy br{display:none}.eyebrow{font-size:9px;margin-bottom:9px}.lab{grid-template-columns:1fr}.canvas-wrap{height:420px}.canvas-heading{padding-inline:15px;font-size:10px}.canvas-heading .mono{font-size:8px;letter-spacing:.5px}.coordinate{left:15px;top:16px;font-size:8px}.canvas-caption{left:15px;font-size:9px;max-width:65%}.canvas-tools{right:12px;top:12px}.scale-bar{right:15px}.transport{height:58px;padding-inline:13px}.transport-main{gap:16px}.transport-button span{display:inline;font-size:9px}.play-button{padding:8px 11px;min-width:90px;font-size:10px}.metrics{padding-block:18px}.metrics strong{font-size:23px}.metric-label{font-size:9px}.metrics small{font-size:7px}.metrics>div{padding-inline:13px}.controls{border-left:0;border-top:1px solid var(--line);padding:0 20px 23px}.panel-tabs{gap:25px}.panel-tabs button{font-size:12px}#rules-panel{display:grid;grid-template-columns:1fr 1fr;column-gap:24px;align-items:start}.rule-section{grid-column:2;grid-row:1/4;border-bottom:0;margin:0}.control-section{margin-bottom:20px}.help{font-size:10px}.slider-label:first-of-type{margin-top:0}.advanced .slider-label{margin-top:15px}.panel-bottom{grid-column:1/-1;margin-top:18px}.outline-button{font-size:10px;padding:8px}.outline-button span:last-child{display:none}.questions{grid-template-columns:1fr 1fr;padding:27px 0;gap:24px 18px}.question-lead h2{font-size:18px}.experiment-card{padding-left:15px}.experiment-card:nth-child(3){border:0;padding:0}.experiment-card p{font-size:10px}footer{flex-wrap:wrap;padding-block:19px;gap:10px}footer>span:nth-child(2){display:none}dialog{padding:32px 25px}}
@media(max-width:400px){.canvas-wrap{height:365px}.canvas-heading .mono{display:none}.transport-main{gap:11px}.transport-button span{display:none}.speed-group button{padding-inline:7px}#rules-panel{display:block}.rule-section{border-bottom:1px solid var(--line);margin-bottom:20px}.metrics>div{padding-inline:9px}.metrics strong{font-size:21px}.intro h1{font-size:23px}.metric-info{display:none}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}html{scroll-behavior:auto}}

.model-badge{display:block;margin-top:8px;font-size:10px;color:#737b68;letter-spacing:-.2px}
.speed-control{display:flex;align-items:center;gap:10px}.speed-control label{font-size:10px;color:#aebaa4;white-space:nowrap}.speed-control select{width:100px;padding:7px 9px;background:#35422e;border:1px solid #566349;color:#e1e9d5;font-size:11px}.playback-info{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:10px 21px;background:#20261f;border-top:1px solid #343e2e;color:#a8b39d;font-size:9px}.playback-info output{font-variant-numeric:tabular-nums;color:#d0dbc2}
@media(max-width:1050px){.speed-control label{display:none}.speed-control select{width:92px}}
@media(max-width:760px){.model-badge{font-size:10px;margin-top:7px}.playback-info{padding:9px 14px;font-size:9px;gap:5px}.speed-control select{width:90px}.transport-main{gap:12px}}
@media(max-width:400px){.speed-control select{width:89px}.playback-info{flex-direction:column;align-items:flex-start;gap:4px}}