:root{color-scheme:light;--ink:#1d302d;--muted:#596d68;--line:#d4dfd9;--paper:#f3f5ef;--white:#fffefa;--accent:#176452;--soft:#e6eee6;--caution:#775518;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:15px;line-height:1.55}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink)}a{color:var(--accent);text-underline-offset:4px}button,input,select,textarea{font:inherit}button,a,input,select,textarea,summary{-webkit-tap-highlight-color:transparent}button{cursor:pointer;border:0;transition:background .15s ease}button:disabled{opacity:.55;cursor:wait}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #c69c42;outline-offset:4px}input:focus,select:focus,textarea:focus{outline:2px solid var(--accent);outline-offset:1px}.topbar{display:flex;justify-content:space-between;align-items:center;gap:16px;max-width:1320px;margin:auto;padding:23px 40px;border-bottom:1px solid var(--line)}.wordmark{text-decoration:none;font-size:12px;font-weight:750;letter-spacing:.14em;display:flex;align-items:center;gap:12px}.mark{font-size:28px;line-height:1}.version{font-size:10px;letter-spacing:.13em;color:var(--muted)}main{max-width:1320px;margin:auto;padding:0 40px}.intro{padding:48px 0 37px;max-width:840px}.eyebrow{font-size:10px;font-weight:750;letter-spacing:.17em;margin:0 0 13px;color:var(--accent)}h1{font-size:clamp(36px,4.5vw,61px);line-height:1.08;letter-spacing:-.055em;font-weight:600;margin:0 0 20px}h1 span{color:var(--muted)}.lede{font-size:17px;max-width:700px;color:var(--muted);margin:0 0 21px}.badges{display:flex;flex-wrap:wrap;gap:8px}.badges span{font-size:11px;padding:5px 10px;border:1px solid var(--line);border-radius:25px;color:var(--muted)}.workspace{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.1fr);gap:23px;align-items:start}.panel{background:var(--white);border:1px solid var(--line);border-radius:15px;padding:26px;margin-bottom:22px;min-width:0;box-shadow:0 3px 15px #1d302d03}.section-heading{display:flex;gap:13px;align-items:center;margin-bottom:25px}.section-heading .eyebrow{margin:0 0 4px}h2{font-size:19px;letter-spacing:-.025em;font-weight:600;line-height:1.25;margin:0 0 15px}.section-heading h2{margin:0}.step{border:1px solid var(--line);border-radius:50%;font-size:12px;min-width:36px;height:36px;display:grid;place-items:center;color:var(--muted)}label,.label{display:block;font-size:12px;font-weight:650;margin:16px 0 7px}input,select,textarea{width:100%;min-width:0;border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:7px;padding:10px 11px;font-size:13px}select{padding-right:22px;min-height:43px}textarea{resize:vertical;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:11px;line-height:1.65;max-height:460px}.inline{display:flex;gap:8px}.inline select{flex:1;width:0}.primary,.secondary{padding:11px 15px;border-radius:7px;font-weight:600;font-size:12px;min-height:44px}.primary{background:var(--accent);color:#fff;display:flex;justify-content:space-between;align-items:center;gap:20px}.primary:hover{background:#0b4d3e}.secondary{background:var(--soft);color:var(--ink);border:1px solid var(--line)}.secondary:hover{background:#d7e5da}.field-help,.note{font-size:11px;color:var(--muted);line-height:1.6;margin:8px 0 14px}.file-row{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px;margin:8px 0 20px}.file-label{font-size:11px;margin:0;cursor:pointer;max-width:100%}.file-label input{display:block;font-size:10px;border:0;padding:4px 0;background:none;max-width:225px}.text-button{font-size:11px;padding:8px 0;color:var(--accent);background:transparent;text-decoration:underline;text-underline-offset:4px;text-align:left}.settings{display:grid;grid-template-columns:1fr 1fr;gap:0 12px}summary{cursor:pointer;font-size:12px;font-weight:600;padding:11px 0;min-height:40px}details{border-top:1px solid var(--line)}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}#run{flex:1}#status{font-size:12px;color:var(--accent);margin:12px 0;overflow-wrap:anywhere}#status.error{color:#9b3434}.empty-state{min-height:610px;padding:45px 35px}.empty-state h2{font-size:32px;line-height:1.15;letter-spacing:-.045em;margin:15px 0}.empty-state>p:not(.eyebrow){font-size:13px;color:var(--muted)}.orbit{font-family:Georgia,serif;font-style:italic;font-size:52px;color:var(--accent);width:140px;height:140px;border:1px solid var(--line);outline:1px solid #e9eee5;outline-offset:12px;border-radius:50%;display:grid;place-items:center;margin:12px 12px 42px}.split-diagram{display:flex;margin:27px 0 20px;gap:5px}.split-diagram span{flex:1;padding:14px 8px;background:var(--soft);border-radius:5px;font-size:18px}.split-diagram span:first-child{flex:3;background:#d6e4d7}.split-diagram small{display:block;font-size:8px;letter-spacing:.1em;margin-top:5px}.equation{padding:17px;background:var(--soft);font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:16px;overflow-wrap:anywhere;line-height:1.6;border-radius:8px}.metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:24px 0 12px}.metrics span{font-size:24px;letter-spacing:-.025em;display:block;overflow-wrap:anywhere}.metrics small{font-size:8px;letter-spacing:.08em;color:var(--muted)}canvas{display:block;width:100%;height:220px;margin-top:17px}#experiment-inputs{display:flex;gap:8px;flex-wrap:wrap;margin:15px 0}.experiment-inputs span{font:12px ui-monospace,SFMono-Regular,monospace;background:var(--soft);padding:9px 12px;border-radius:5px}#experiment-summary{font-size:13px}.warnings{padding-left:18px;font-size:11px;color:var(--muted);line-height:1.65}.warnings li{margin-bottom:10px}.table-wrap{overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:10px}th,td{text-align:left;border-bottom:1px solid var(--line);padding:10px 6px}td:first-child{font-family:ui-monospace,monospace;overflow-wrap:anywhere}#challenge{margin-top:15px}#challenge-result{font-size:12px;overflow-wrap:anywhere}.method{border-top:1px solid var(--line);padding:29px 0;margin-top:24px}.method h2{font-size:17px}.method>p{font-size:12px;color:var(--muted);max-width:920px}.method-links{display:flex;gap:24px;font-size:11px;margin:19px 0}footer{max-width:1320px;margin:auto;padding:20px 40px 32px;display:flex;justify-content:space-between;gap:18px;color:var(--muted);font-size:10px}[hidden]{display:none!important}.output-column{min-width:0}.result-main #verdict{color:var(--accent)}.result-main[data-status="not_supported"] #verdict,.result-main[data-status="invalid_on_holdout"] #verdict{color:var(--caution)}
@media(max-width:850px){.workspace{grid-template-columns:1fr}.empty-state{min-height:0}.empty-state .orbit{display:none}.topbar{padding:20px 24px}main{padding:0 24px}.intro{padding-top:35px}footer{padding:20px 24px;flex-direction:column}.input-panel{margin-bottom:0}}@media(max-width:480px){.topbar{padding:17px 18px}.version{font-size:8px;max-width:72px;text-align:right}.wordmark{font-size:9px;gap:7px;letter-spacing:.1em}main{padding:0 16px}.intro{padding:32px 0 26px}h1{font-size:39px}.lede{font-size:14px}.panel{padding:20px 17px;border-radius:11px}.section-heading{gap:10px}.section-heading h2{font-size:17px}.metrics span{font-size:21px}.metrics small{font-size:7px}.settings{grid-template-columns:1fr}.equation{font-size:13px}.empty-state h2{font-size:28px}.badges span{font-size:10px}footer{padding:16px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}