:root{--bg:#f6f7f9;--panel:#fff;--panel-muted:#f1f4f6;--text:#1f252b;--muted:#66717c;--border:#d9dee3;--strong-border:#aeb8c2;--accent:#0f766e;--accent-soft:#d8f1ed;--warn:#b45309;--danger:#b91c1c;--line:#0f766e;--shadow:0 14px 34px #1f252b14;--font:Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;color:var(--text);background:var(--bg);font-family:var(--font);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:14px;line-height:1.4}*{box-sizing:border-box}body{min-width:320px;margin:0}button,input,textarea{font:inherit}button{border:1px solid var(--strong-border);background:var(--panel);min-height:32px;color:var(--text);cursor:pointer;border-radius:6px;padding:5px 10px}.paper-link{border:1px solid var(--strong-border);min-height:32px;color:var(--text);background:var(--panel);border-radius:6px;align-items:center;padding:5px 10px;text-decoration:none;display:inline-flex}.paper-link:hover,button:hover{border-color:var(--accent)}.subtle-button{min-height:22px;color:var(--muted);background:0 0;border-color:#0000;padding:2px 4px;font-size:12px}.subtle-button:hover{color:var(--text);background:var(--panel-muted);border-color:#0000}button:disabled{cursor:default;color:var(--muted);border-color:var(--border);background:var(--panel-muted)}input,textarea{border:1px solid var(--border);width:100%;min-height:30px;color:var(--text);background:#fff;border-radius:5px;padding:4px 7px}input[type=range]{accent-color:var(--accent);padding:0}textarea{resize:vertical;min-height:62px}h1,h2,h3,p{margin:0}h1{letter-spacing:0;font-size:22px;font-weight:650}h2{letter-spacing:0;font-size:14px;font-weight:650}h3{color:var(--muted);text-transform:uppercase;letter-spacing:.04em;font-size:12px;font-weight:650}#app{min-height:100svh}.workspace{grid-template-columns:minmax(520px,1fr) 460px;gap:12px;min-height:100svh;padding:12px;display:grid}.viewport-panel,.control-panel{min-width:0}.viewport-panel{grid-template-rows:1fr;display:grid}.panel{background:var(--panel);border:1px solid var(--border);box-shadow:var(--shadow);border-radius:8px}.meta-line{color:var(--muted);margin-top:3px;font-size:12px}.toolbar{flex-wrap:wrap;justify-content:flex-end;gap:8px;display:flex}.canvas-shell{background:#20252a;border:1px solid #15191d;border-radius:8px;place-items:center;min-height:0;display:grid;position:relative;overflow:hidden}.viewport-header{z-index:2;color:#fff;text-shadow:0 1px 4px #000000bf;justify-content:space-between;align-items:center;gap:16px;min-height:64px;padding:12px 14px;display:flex;position:absolute;top:12px;left:12px;right:12px}.viewport-header .meta-line{color:#ffffffdb}.canvas-hint{z-index:2;color:#ffffffe0;text-align:center;text-shadow:0 1px 4px #000000bf;pointer-events:none;font-size:12px;position:absolute;bottom:12px;left:12px;right:12px}.canvas-hint span+span:before{content:" · ";color:#ffffffb3}#canvas{aspect-ratio:1;background:#f8fafb;width:min(78vmin,100%);height:auto;display:block}.control-panel{flex-direction:column;gap:12px;max-height:calc(100svh - 24px);display:flex;overflow:auto}.panel{padding:12px}.panel-header{justify-content:space-between;align-items:center;gap:10px;margin-bottom:10px;display:flex}.metric-pill{text-align:right;min-width:78px;color:var(--accent);background:var(--accent-soft);font-variant-numeric:tabular-nums;border-radius:999px;padding:3px 8px}.loss-header-controls{align-items:center;gap:8px;display:flex}.toggle-control{color:var(--muted);white-space:nowrap;align-items:center;gap:6px;font-size:12px;display:inline-flex}.toggle-control input{width:auto;min-height:0;accent-color:var(--accent)}.editor-section{border-top:1px solid var(--border);gap:8px;margin-top:10px;padding-top:10px;display:grid}.editor-section:first-child{border-top:0;margin-top:0;padding-top:0}.field-row,.slider-row{grid-template-columns:96px 1fr;align-items:center;gap:8px;display:grid}.field-row>label,.slider-row>label{color:var(--muted);font-size:12px}.small-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;display:grid}.data-table{border-collapse:collapse;table-layout:fixed;width:100%}.data-table th,.data-table td{border-bottom:1px solid var(--border);text-align:left;vertical-align:middle;padding:5px 4px}.data-table th{color:var(--muted);font-size:11px;font-weight:650}.data-table td{font-size:12px}.data-table input{min-height:28px}.col-index{width:34px;color:var(--muted);font-variant-numeric:tabular-nums}.room-swatch{vertical-align:middle;background:var(--room-color);border:1px solid #1f252b59;border-radius:50%;width:18px;height:18px;display:inline-block;box-shadow:inset 0 0 0 2px #ffffff8c}.adjacency-list{gap:7px;display:grid}.adjacency-row{grid-template-columns:minmax(0,1fr) 18px 12px 18px minmax(0,1fr) 30px;align-items:center;gap:7px;display:grid}.adjacency-separator{color:var(--muted);text-align:center}.col-area,.col-rel,.col-coord{width:72px}.col-action{text-align:right;width:42px}.icon-button{width:30px;min-height:28px;padding:0}.danger{color:var(--danger)}.section-actions{justify-content:flex-end;gap:8px;display:flex}.slider-control{grid-template-columns:58px 1fr 72px 58px;align-items:center;gap:6px;display:grid}.slider-control input[type=number]{font-variant-numeric:tabular-nums}.slider-minmax{color:var(--muted);font-size:11px}.loss-table{border-collapse:collapse;width:100%}.loss-table th,.loss-table td{border-bottom:1px solid var(--border);text-align:right;font-variant-numeric:tabular-nums;padding:5px 4px}.loss-table th:first-child,.loss-table td:first-child{text-align:left}.loss-table th{color:var(--muted);font-size:11px}.graph-shell{grid-template-columns:1fr 48px;align-items:stretch;gap:8px;margin-top:12px;display:grid}#lossGraph{border:1px solid var(--border);background:linear-gradient(#fff,#f7faf9);border-radius:6px;width:100%;height:150px}.graph-axis{stroke:#cbd5dc;stroke-width:1px}.graph-line{fill:none;stroke:var(--line);stroke-width:2px;stroke-linecap:round;stroke-linejoin:round}.graph-scale{color:var(--muted);font-variant-numeric:tabular-nums;overflow-wrap:anywhere;flex-direction:column;justify-content:space-between;font-size:11px;display:flex}.graph-bounds{grid-template-columns:repeat(5,minmax(0,1fr));gap:8px;margin-top:10px;display:grid}.graph-bounds label{color:var(--muted);gap:4px;font-size:11px;display:grid}.graph-bounds input{font-variant-numeric:tabular-nums;min-height:28px}.paper-panel{justify-content:flex-end;display:flex}.hint{color:var(--muted);font-size:12px}@media (width<=1080px){.workspace{grid-template-columns:1fr}.control-panel{max-height:none}#canvas{width:min(92vw,620px)}}@media (width<=640px){.workspace{padding:8px}.viewport-header{flex-direction:column;align-items:stretch}.toolbar{justify-content:flex-start}.field-row,.slider-row,.adjacency-row,.slider-control,.graph-bounds,.graph-shell{grid-template-columns:1fr}.graph-scale{flex-direction:row}}