:root{--ink:#1d2424;--muted:#58635f;--paper:#f3f1eb;--line:#c9c1b3;--accent:#a95f3d;--panel:#fffdf7}*{box-sizing:border-box}body{color:var(--ink);background:var(--paper);margin:0;font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}.shell{grid-template-rows:auto 1fr;min-height:100vh;display:grid}.topbar{border-bottom:1px solid var(--line);background:#faf7ef;justify-content:space-between;align-items:end;gap:24px;padding:18px 22px 14px;display:flex}h1{letter-spacing:-.04em;margin:2px 0 0;font-size:clamp(22px,3.2vw,38px);line-height:.98}.eyebrow{color:var(--accent);letter-spacing:.08em;text-transform:uppercase;margin:0;font-size:12px;font-weight:800}.controls{flex-wrap:wrap;justify-content:flex-end;gap:8px;display:flex}.variant{border:1px solid var(--line);color:var(--ink);cursor:pointer;background:0 0;border-radius:0;padding:10px 12px;font-weight:750}.variant.active{background:var(--ink);color:#fff8ee;border-color:var(--ink)}.stage-wrap{grid-template-columns:minmax(0,1fr) 330px;min-height:0;display:grid}#stage{height:calc(100vh - 86px);min-height:640px;position:relative}#stage canvas{width:100%;height:100%;display:block}.panel{border-left:1px solid var(--line);background:var(--panel);padding:22px;overflow:auto}.panel h2{letter-spacing:-.03em;margin:0 0 8px;font-size:22px}.panel p{color:var(--muted);line-height:1.45}dl{border:1px solid var(--line);gap:1px;margin:18px 0;display:grid}dl div{border-bottom:1px solid var(--line);background:#fbf8f1;grid-template-columns:1fr 1.15fr;gap:10px;padding:10px;display:grid}dl div:last-child{border-bottom:0}dt{color:var(--muted);text-transform:uppercase;letter-spacing:.04em;font-size:12px;font-weight:800}dd{margin:0;font-size:13px;font-weight:700}.note{border-top:1px solid var(--line);padding-top:14px;font-size:12px}@media (width<=820px){.topbar{flex-direction:column;align-items:stretch}.controls{justify-content:flex-start}.stage-wrap{grid-template-columns:1fr}#stage{height:62vh;min-height:420px}.panel{border-left:0;border-top:1px solid var(--line)}}