:root{color-scheme:light dark;--bg:#f5f4ee;--card:#fffefa;--text:#213b31;--muted:#606e63;--line:#d7ded4;--accent:#285941;--soft:#e7eee3;--bad:#ad4130;--bad-bg:#fcebe4;--a:#78976e;--b:#ddb56b;--input:#fff}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;line-height:1.55}main{max-width:1120px;margin:auto;padding:26px 32px 20px}header{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:18px}.brand{color:var(--text);text-decoration:none;font-size:23px;font-weight:850;letter-spacing:-1px}.brand span{color:var(--accent);margin-right:6px}.eyebrow,.hint,.input-help,footer{color:var(--muted);font-size:13px}.intro{padding:36px 0 26px}.kicker,.step{font-size:11px;font-weight:750;letter-spacing:1.2px;color:var(--accent);margin:0 0 8px}.intro h1{font-size:clamp(30px,4.5vw,47px);line-height:1.2;letter-spacing:-2px;margin:0 0 16px}.intro p:last-child{margin:0;color:var(--muted);font-size:16px}.notice{font-size:13px;background:var(--soft);border-radius:10px;padding:14px 18px;margin-bottom:24px}.notice strong{margin-right:5px}.panel{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:24px}.tent{display:flex;justify-content:space-between;align-items:center;gap:24px}h2{font-size:19px;letter-spacing:-.6px;margin:0}p.hint{margin:7px 0 0}.dimensions{display:flex;align-items:center;gap:14px;max-width:400px}.dimensions label{max-width:172px}label{display:block;font-size:13px;font-weight:650;min-width:0}label span{font-size:11px;color:var(--muted);font-weight:400;margin-left:3px}input{width:100%;min-width:0;border:1px solid var(--line);border-radius:8px;background:var(--input);color:var(--text);font:inherit;padding:11px 12px;min-height:46px;margin-top:6px}input[aria-invalid=true]{border-color:var(--bad);box-shadow:0 0 0 1px var(--bad)}input:focus-visible,button:focus-visible,a:focus-visible{outline:3px 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svg{width:100%;height:auto;display:block}.plot-bg{fill:var(--soft);stroke:var(--accent);stroke-width:1.5;stroke-dasharray:5 4}.plot-label{fill:var(--text);font-size:12px;font-weight:600}.plot-mat{fill:var(--a);stroke:var(--card);stroke-width:2}.plot-mat.second{fill:var(--b)}.plot-mat.third{fill:#92b5ae}.plot-number{fill:#162d25;font-size:13px;font-weight:750}.editors{padding:8px 20px 20px}.mat-row{border-top:1px solid var(--line);padding:13px 0}.mat-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;font-size:12px;font-weight:700}.row-inputs{display:grid;grid-template-columns:1fr 1fr auto;gap:8px;align-items:end}.rotate{font-size:12px;padding:0 10px}.rotate[aria-pressed=true]{background:var(--soft);border-color:var(--accent);color:var(--accent)}button{font:inherit;font-size:13px;line-height:1.3;min-height:44px;border:1px solid var(--line);border-radius:8px;background:var(--card);color:var(--text);padding:10px 14px;cursor:pointer}button:hover{filter:brightness(.96)}button:disabled{opacity:.5;cursor:not-allowed}.remove{border:0;background:transparent;padding:3px 8px;min-height:44px;color:var(--muted);font-size:12px}.add{width:100%;border-style:dashed;margin-bottom:16px}.note input{font-size:12px;font-weight:400}.actions{margin-top:24px;display:grid;grid-template-columns:1fr auto;gap:12px;align-items:center}.buttons{display:flex;gap:8px;flex-wrap:wrap}.primary{background:var(--accent);color:#fff;border-color:var(--accent);font-weight:650}.quiet{background:transparent;color:var(--muted)}#status{grid-column:1/-1;font-size:13px;margin:0;min-height:20px;color:var(--accent)}footer{padding:24px 0 5px;font-size:11px}footer span{padding:0 5px}.invalid-plot{min-height:235px;display:grid;place-items:center;padding:25px;text-align:center;color:var(--muted);font-size:13px}@media(max-width:700px){main{padding:20px 16px}.eyebrow{font-size:10px}.intro{padding:27px 0 23px}.tent{display:block;padding:20px}.dimensions{margin-top:14px;max-width:none}.dimensions label{max-width:none;flex:1}.comparison{grid-template-columns:1fr;gap:20px}.section-heading{display:block}.section-heading>.hint{display:block;margin-top:5px}.actions{display:block;padding:20px}.buttons{margin-top:16px}.buttons button{flex:1 1 130px}#status{margin-top:12px}.group-head{padding-top:18px}.notice{padding:13px 15px}.notice strong{display:block;margin-bottom:3px}}@media(prefers-color-scheme:dark){:root{--bg:#14221c;--card:#1c2e25;--text:#e6eddf;--muted:#afbdaf;--line:#415348;--accent:#a0c597;--soft:#2b4133;--bad:#ffb296;--bad-bg:#473027;--input:#17271f}.primary,.badge{background:#a0c597;color:#17271f}.plot-bg{stroke:#a0c597}.plot-mat{stroke:#1c2e25}.group:nth-child(2) .badge{background:#ddb56b;color:#17271f}}