:root{--fg:#1d2433;--muted:#5d6779;--bg:#f7f8fb;--card:#fff;--line:#e1e5ee;--accent:#9333ea;--warn:#c77800;--bad:#c62828;--ok:#2e7d32;color-scheme:light dark}@media(prefers-color-scheme:dark){:root{--fg:#e8ebf2;--muted:#9aa3b5;--bg:#11151d;--card:#1a1f2b;--line:#2b3242;--accent:#7aa2ff}}html[data-theme=light]{--fg:#1d2433;--muted:#5d6779;--bg:#f7f8fb;--card:#fff;--line:#e1e5ee;--accent:#9333ea;color-scheme:light}html[data-theme=dark]{--fg:#e8ebf2;--muted:#9aa3b5;--bg:#11151d;--card:#1a1f2b;--line:#2b3242;--accent:#7aa2ff;color-scheme:dark}*{box-sizing:border-box}body{margin:0;font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--fg);background:var(--bg)}a{color:var(--accent)}.wrap{max-width:1100px;margin:0 auto;padding:0 16px}.site-header{background:var(--card);border-bottom:1px solid var(--line)}.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;height:56px}.brand{font-weight:800;font-size:1.2rem;text-decoration:none;color:var(--fg)}.brand{flex-shrink:0}.site-header nav{display:flex;gap:14px;flex-wrap:nowrap;overflow-x:auto;white-space:nowrap;min-width:0;scrollbar-width:none;font-size:.95rem}.site-header nav::-webkit-scrollbar{display:none}@media(max-width:720px){.site-header .wrap{gap:12px}.site-header nav{gap:12px;font-size:.9rem;padding-right:14px;-webkit-mask-image:linear-gradient(90deg,#000 85%,transparent);mask-image:linear-gradient(90deg,#000 85%,transparent)}}.site-header nav a{text-decoration:none;color:var(--muted)}h1{font-size:1.9rem;margin:20px 0 4px;line-height:1.2}.lede{color:var(--muted);margin:0 0 16px}.crumbs{font-size:.85rem;color:var(--muted);margin-top:14px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}.panel{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:12px 14px}.toolbar,.top-bar,.tools{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin:8px 0 16px}button,.primary{font:inherit;font-size:.88rem;padding:6px 10px;border:1px solid var(--line);background:var(--card);color:var(--fg);border-radius:8px;cursor:pointer}button:hover{border-color:var(--accent)}button.primary,.primary{background:var(--accent);color:#fff;border-color:var(--accent)}button.danger:hover{border-color:var(--bad);color:var(--bad)}.muted{color:var(--muted)}.prose{max-width:760px;margin:24px 0}.prose h2{font-size:1.3rem;margin-top:28px}.faq details{border-bottom:1px solid var(--line);padding:8px 0}.faq summary{cursor:pointer;font-weight:600}.related{columns:2}.ad-slot{margin:20px 0;min-height:100px}.site-footer{border-top:1px solid var(--line);margin-top:40px;padding:20px 0;font-size:.9rem;background:var(--card)}.tool-links{display:flex;flex-wrap:wrap;gap:6px 16px}@media print{.site-header,.site-footer,.ad-slot{display:none!important}}[hidden]{display:none!important}.toolbar label{display:flex;gap:6px;align-items:center;font-size:.9rem}.rf input,.rf select{font:inherit;font-size:.9rem;padding:4px 6px;border:1px solid var(--line);border-radius:6px;background:var(--bg);color:var(--fg)}.rf-grid{display:grid;grid-template-columns:minmax(0,3fr) minmax(0,2fr);gap:12px;align-items:start}@media(max-width:860px){.rf-grid{grid-template-columns:minmax(0,1fr)}}.rf-side{display:flex;flex-direction:column;gap:12px;min-width:0}.rf[data-focus=door] [data-sec=door],.rf[data-focus=rug] [data-sec=rug]{outline:2px solid var(--accent)}.rf[data-focus=door] [data-sec=door]{order:-1;grid-column:1/-1}.rf-h{font-size:1rem;margin:0 0 8px}.rf-room{display:flex;flex-wrap:wrap;gap:10px;align-items:flex-end;margin-bottom:8px}.rf-room label,.rf-fields label{display:flex;flex-direction:column;gap:3px;font-size:.8rem;font-weight:600}.rf-room input{width:90px}.rf-fields{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:8px;margin:6px 0}.rf-fields input{width:100%}.rf-w2{grid-column:1/-1}.rf-u{font-weight:400;color:var(--muted)}.rf-row{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}.rf-row select{flex:1;min-width:0}.rf-more summary{cursor:pointer;font-size:.88rem;color:var(--muted);margin-top:8px}#rf-svg{width:100%;height:auto;max-height:72vh;display:block;touch-action:none;background:var(--bg);border-radius:8px;outline:none}#rf-svg:focus-visible{box-shadow:0 0 0 2px var(--accent)}.rf-floor{fill:var(--card)}.rf-wall{fill:none;stroke:var(--fg);stroke-width:3}.rf-gridlines line{stroke:var(--line);stroke-width:.6}.rf-item{cursor:grab}.rf-item rect{stroke:#334155;stroke-width:1}.rf-item text{fill:#1d2433;pointer-events:none;font-family:system-ui,sans-serif}.rf-rug rect{stroke:var(--muted);stroke-dasharray:6 4;stroke-width:1.5}.rf-rug text{fill:var(--muted)}.rf-selected rect{stroke:var(--accent);stroke-width:3}.rf-bad rect{stroke:var(--bad);stroke-width:3}.rf-dim{fill:var(--muted);font-family:system-ui,sans-serif}.rf-item .rf-dim{fill:#475569}.rf-issues{list-style:none;padding:0;margin:8px 0 0;font-size:.88rem}.rf-issues li{padding:2px 0}.rf-overlap,.rf-outside{color:var(--bad)}.rf-tight{color:var(--warn)}.rf-ok{color:var(--ok)}.rf-overlap:before,.rf-outside:before{content:"✗ "}.rf-tight:before{content:"⚠ "}.rf-ok:before{content:"✓ "}.rf-list{margin:0;padding-left:20px;font-size:.86rem}.rf-link{border:0;background:none;padding:1px 0;color:var(--accent);text-align:left}.rf-verdict{font-weight:600;margin:10px 0 4px}.rf-yes{color:var(--ok)}.rf-no{color:var(--bad)}.rf-inline{display:flex;gap:8px;align-items:center;font-size:.88rem;flex-wrap:wrap}.small{font-size:.8rem}@media print{.site-header,.site-footer,.prose,.ad-slot,.lede,h1,.crumbs,.toolbar,.tip-nudge,.rf-side,[data-sec=door],[data-sec=rug],.rf-room input{display:none!important}body{background:#fff}.rf-grid{display:block}.panel{border:0}}