:root{color-scheme:dark;--bg:#110f16;--surface:#1b1722;--ink:#f3edf6;--muted:#bab0c4;--line:#42354e;--plum:#d4b1eb;--amber:#efb878}*{box-sizing:border-box}[hidden]{display:none!important}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 'Space Grotesk',system-ui,-apple-system,sans-serif}a{color:var(--plum);text-underline-offset:4px}button,input{font:inherit}button{min-height:44px;padding:9px 13px;border:1px solid #665271;border-radius:6px;background:#241d2d;color:var(--ink);cursor:pointer}button:hover,button[aria-pressed=true],button[aria-current=step]{background:#3b2a49;border-color:var(--plum)}button.primary{background:var(--plum);color:#281631;border-color:var(--plum);font-weight:650}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--amber);outline-offset:4px}input[type=range]{width:100%;min-height:44px;margin:0;accent-color:var(--plum)}header,main,footer{max-width:1320px;margin:auto}header,footer{display:flex;justify-content:space-between;gap:24px;padding:26px 40px;font-size:14px}header{border-bottom:1px solid var(--line)}header a{text-decoration:none}main{padding:42px 40px}.intro{display:grid;grid-template-columns:1.15fr 1fr;gap:48px;align-items:end;margin-bottom:32px}.eyebrow{font-size:12px;letter-spacing:.1em;text-transform:uppercase;font-weight:650;color:var(--plum);margin:0 0 14px}h1{font-size:52px;line-height:1.08;font-weight:550;margin:0}em{font-style:normal;color:var(--plum)}.lede{font-size:18px;max-width:490px;color:var(--muted);margin:0}.workbench{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(330px,1fr);gap:30px;align-items:start}.stage{position:sticky;top:16px;min-width:0;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:var(--surface)}.transport{display:flex;gap:10px;align-items:center;padding:20px 20px 10px;flex-wrap:wrap}.transport span{font-size:12px;color:var(--muted);margin-left:auto}.timeline{padding:0 20px}.timeline label{display:flex;justify-content:space-between;font-size:12px;color:var(--muted)}.timeline output{font-variant-numeric:tabular-nums}.chapters{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:6px;padding:0 20px 18px}.chapters button{font-size:12px;padding:8px 5px}.scene-top{display:flex;justify-content:space-between;gap:12px;padding:16px 20px 0;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}.scene-top b{font-weight:500;color:var(--plum)}#lut-scene{display:block;width:100%;height:350px;touch-action:pan-y}#scene-status{padding:32px 20px;color:var(--muted);font-size:14px}.scene-legend{display:flex;gap:22px;padding:8px 20px;font-size:12px;color:var(--muted)}.scene-legend span{display:flex;align-items:center;gap:8px}.scene-legend i{width:18px;height:3px;display:inline-block;background:var(--amber)}.scene-legend i.after{background:var(--plum)}.camera{display:flex;align-items:center;gap:8px;padding:10px 20px}.camera button{font-size:12px}.camera span{font-size:12px;color:var(--muted);margin-left:auto}.entries{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;padding:12px 20px}.entries button{display:grid;justify-items:center;min-height:60px;padding:6px}.entries span{font-size:11px;color:var(--muted)}.entries b{font:22px/1.4 ui-monospace,monospace}.entry-detail{padding:0 20px 16px;margin:0;font-size:12px;color:var(--muted);min-height:55px}.narration{min-height:168px}.narration h2{font-size:25px;line-height:1.22;margin:0 0 14px;font-weight:550}.narration p:last-child{font-size:15px;color:var(--muted);margin:0 0 20px}.input-readout{display:flex;align-items:center;gap:12px;border-top:1px solid var(--line);padding:16px 0;font-size:12px;color:var(--muted)}.input-readout strong{font:30px/1.2 ui-monospace,monospace;color:var(--ink)}.input-readout span:last-child{margin-left:auto;text-align:right;max-width:130px}.input-readout b{display:block;color:var(--ink);font:18px/1.6 ui-monospace,monospace}.comparison{display:grid;grid-template-columns:1fr 1fr;gap:12px}.comparison>div{border-top:2px solid var(--amber);padding:12px 0}.comparison>div.after-result{border-color:var(--plum)}.comparison p{font-size:12px;margin:0 0 5px;color:var(--muted)}.comparison strong{display:block;font:38px/1.2 ui-monospace,monospace;color:var(--amber)}.comparison .after-result strong{color:var(--plum)}.comparison span{font-size:12px;color:var(--muted)}.comparison-note{font-size:13px;color:var(--ink);margin:0 0 18px}.arithmetic{border-block:1px solid var(--line);padding:12px 0}.arithmetic summary{font-size:13px;color:var(--plum);cursor:pointer;min-height:32px}.arithmetic p{font-size:12px;margin:8px 0}.arithmetic b{display:block;font-weight:500;color:var(--muted)}.arithmetic code{display:block;font-size:12px;line-height:1.7;overflow-wrap:anywhere}.explore{padding-top:24px}.explore h2{font-size:20px;font-weight:550;margin:0}.explore>p{font-size:12px;color:var(--muted);margin:4px 0 15px}.explore label{display:flex;justify-content:space-between;font-size:13px;color:var(--muted)}.explore output{font-family:ui-monospace,monospace;color:var(--ink)}.presets{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:8px}.presets button{font-size:12px}.context{display:grid;grid-template-columns:1fr 1.2fr;gap:70px;border-top:1px solid var(--line);padding-top:36px;margin-top:55px}.context h2{font-size:30px;line-height:1.2;font-weight:550;margin:0 0 18px}.context p{font-size:15px;color:var(--muted);margin:0 0 18px}.context a{font-size:14px}.context p.scope,.source-note{font-size:12px;color:var(--muted)}.source-note{margin:30px 0 0;max-width:900px}footer{border-top:1px solid var(--line);padding-bottom:36px}.skip{position:absolute;top:-100px;background:var(--surface);padding:12px;z-index:10}.skip:focus{top:10px}.no-js{border:1px solid var(--line);padding:20px;font-size:14px}@media(max-width:1000px){main{padding:32px 24px}header,footer{padding-inline:24px}.workbench{grid-template-columns:minmax(0,1fr) minmax(290px,.85fr);gap:22px}.intro{gap:28px}h1{font-size:44px}.lede{font-size:16px}.transport span{width:100%;margin:0}.chapters{grid-template-columns:1fr 1fr}.scene-top{flex-direction:column;gap:0}#lut-scene{height:320px}.camera{flex-wrap:wrap}.camera span{width:100%;margin:0}.context{gap:30px}}@media(max-width:700px){header{font-size:12px;padding:20px;gap:14px}main{padding:28px 20px}.intro,.workbench,.context{grid-template-columns:1fr}.intro{gap:20px;margin-bottom:24px}h1{font-size:38px}.eyebrow{font-size:11px}.stage{position:relative;top:auto}.transport{padding:16px 14px 8px}.transport span{width:auto;margin-left:auto}.timeline{padding-inline:14px}.chapters{padding:0 14px 14px;grid-template-columns:repeat(4,minmax(0,1fr))}.chapters button{font-size:11px}.scene-top{padding-inline:14px;flex-direction:row;font-size:11px}#lut-scene{height:320px}.scene-legend,.camera,.entries{padding-inline:14px}.scene-legend{gap:18px}.camera span{width:auto;font-size:11px}.entry-detail{padding-inline:14px}.narration{min-height:0;padding-top:6px}.narration h2{font-size:25px}.context{gap:12px;margin-top:36px;padding-top:28px}.context h2{font-size:27px}footer{flex-wrap:wrap;padding:24px 20px}.source-note{margin-top:20px}}@media(max-width:380px){.transport span{width:100%;margin:0}.scene-top{flex-direction:column}.camera span{width:100%}.scene-legend{gap:12px;font-size:11px}}

.range-label{display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:13px;color:var(--muted)}.timeline .range-label{font-size:12px}.range-label label{display:block}.range-label output{font-variant-numeric:tabular-nums}

.scene-readout{margin:0;padding:8px 20px 4px;color:var(--ink);font:14px/1.6 ui-monospace,monospace}.camera #scene-play{border-color:var(--plum);color:var(--plum)}@media(max-width:700px){.scene-readout{padding-inline:14px;font-size:12px}}