:root{--paper:#eef3f8;--surface:#fff;--ink:#182d46;--muted:#51637a;--line:#cbd7e4;--blue:#2359c4;--blue-hover:#194699;--positive:#216143;--negative:#9d2837;--code:#e3ecf8;--sans:"Segoe UI",Arial,sans-serif;--mono:"Cascadia Code","Liberation Mono",monospace}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.6 var(--sans)}main{width:min(1080px,100% - 48px);margin:auto}header,footer{display:flex;align-items:center;justify-content:space-between;gap:16px}header{padding:30px 0;border-bottom:1px solid var(--line)}.brand{font-size:28px;font-weight:750;letter-spacing:-1.5px}.brand-dot{color:var(--blue)}.caption,.eyebrow{font:12px/1.5 var(--mono);letter-spacing:1.5px}.caption{color:var(--muted)}.intro{padding:52px 0 34px;max-width:680px}.eyebrow{color:var(--blue);margin:0 0 16px}h1{font-size:clamp(44px,7vw,76px);line-height:1.02;letter-spacing:-3.5px;font-weight:650;margin:0 0 24px}h2{font-size:28px;line-height:1.2;letter-spacing:-.7px;margin:0 0 16px}.lead{font-size:20px;line-height:1.5;color:var(--muted);max-width:600px;margin:0}.runtime{background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--blue);border-radius:6px;padding:22px 26px}.runtime-heading{display:flex;gap:20px;align-items:center;justify-content:space-between}#status{font-weight:650}#status[data-state=ok]{color:var(--positive)}#status[data-state=error]{color:var(--negative)}dl{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin:22px 0 16px}dt{font-size:13px;color:var(--muted)}dd{margin:4px 0 0;font-family:var(--mono);font-size:17px}.meta{color:var(--muted);font-size:13px;line-height:1.5;margin:12px 0 0}.experiment{display:grid;grid-template-columns:1fr 1fr;margin:38px 0 48px;border:1px solid var(--line);border-radius:6px;overflow:hidden}.input-panel{padding:30px;background:var(--surface)}.input-panel>p:not(.eyebrow){color:var(--muted);margin:0 0 24px}label{display:block;font-size:14px;font-weight:650;margin-bottom:8px}textarea{width:100%;resize:vertical;min-height:100px;max-height:320px;border:1px solid var(--line);border-radius:4px;background:var(--paper);color:var(--ink);font:16px/1.6 var(--sans);padding:12px;margin-bottom:16px}button{border:1px solid transparent;border-radius:4px;background:var(--blue);color:var(--surface);padding:12px 18px;min-height:44px;font:600 14px/1.4 var(--sans);cursor:pointer;transition:background .15s}button:hover{background:var(--blue-hover)}button span{padding-left:20px}button:disabled{opacity:.65;cursor:wait}.secondary{background:var(--surface);color:var(--blue);border-color:var(--line)}.secondary:hover{background:var(--paper)}:focus-visible{outline:3px solid var(--blue);outline-offset:4px}.output-panel{background:var(--code);padding:30px;min-width:0}.output-heading{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;border-bottom:1px solid var(--line);padding-bottom:18px}code{font:12px/1.6 var(--mono);color:var(--blue)}pre{font:14px/1.8 var(--mono);white-space:pre-wrap;overflow-wrap:anywhere;margin:24px 0;min-height:220px}footer{padding-bottom:30px;color:var(--muted);font-size:13px}a{color:var(--blue);text-underline-offset:4px}footer a{min-height:44px;display:inline-flex;align-items:center;gap:8px}[data-state=error]{color:var(--negative)}@media(max-width:700px){main{width:calc(100% - 32px)}header{padding:18px 0}.intro{padding:36px 0 28px}h1{letter-spacing:-2px}.lead{font-size:18px}.runtime{padding:18px}.runtime-heading{align-items:flex-start;flex-direction:column;gap:10px}dl{grid-template-columns:1fr 1fr;gap:20px 12px}.experiment{grid-template-columns:1fr;margin-top:24px}.input-panel,.output-panel{padding:24px}.output-panel{border-top:1px solid var(--line)}footer{align-items:flex-start;flex-direction:column;gap:0}}@media(prefers-reduced-motion:reduce){*{transition:none!important}}