.st-page{--st-ink:#1c2622;--st-trace:#c0602f;--st-snap:#1f6fb2;--st-glass:#9cc9de;--st-door:#8a5a2b;--st-gold:#d99a2b;--st-gold-soft:#fbefd6;--st-ok-glow:#2a9d5573;--st-principal:#c0602f;--st-secondary:#4f7ea3;--st-blank:var(--text-faint);--st-table:#f8faf7;--st-drawing-ink:#33413b;height:100dvh;min-height:640px;overflow:hidden}.st-main{flex-direction:column;min-height:0;display:flex;overflow:hidden}.st-visually-hidden{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;overflow:hidden;position:absolute!important}.st-hint{color:var(--text-muted);font-size:var(--text-xs);margin:0;line-height:1.45}.st-link{color:var(--text);font:inherit;font-size:var(--text-xs);text-decoration:underline;-webkit-text-decoration-color:var(--rule-strong);text-decoration-color:var(--rule-strong);text-underline-offset:3px;cursor:pointer;background:0 0;border:0;padding:0}.st-link:hover{text-decoration-color:currentColor}.st-link:disabled{opacity:.5;cursor:not-allowed}.st-btn{border:1px solid var(--rule-strong);border-radius:var(--radius-pill);background:var(--surface);min-height:34px;color:var(--text);font:500 var(--text-sm)/1 var(--font-ui);cursor:pointer;white-space:nowrap;transition:transform var(--duration-fast) var(--ease-out),box-shadow var(--duration-fast) var(--ease-out),background var(--duration-fast) var(--ease-out);justify-content:center;align-items:center;gap:6px;padding:0 14px;display:inline-flex}.st-btn:hover:not(:disabled){background:var(--surface-hover);box-shadow:var(--shadow-1)}.st-btn:active:not(:disabled){transform:translateY(1px)}.st-btn:disabled{opacity:.45;cursor:not-allowed}.st-btn.is-primary{background:var(--st-ink);border-color:var(--st-ink);color:#fff}.st-btn.is-primary:hover:not(:disabled){background:var(--accent-hover)}.st-btn.is-ghost{width:34px;font-family:var(--font-mono);padding:0;font-weight:600}.st-btn.is-small{min-height:28px;font-size:var(--text-xs);padding:0 11px}.st-btn:focus-visible,.st-link:focus-visible{outline:2px solid var(--focus-ring);outline-offset:2px}.st-seg,.st-page .ui-seg{border:1px solid var(--rule);border-radius:var(--radius-pill);background:var(--surface-muted);gap:2px;padding:2px;display:inline-flex}.st-seg>button,.st-page .ui-seg>button{border-radius:var(--radius-pill);min-height:26px;color:var(--text-muted);font:500 var(--text-xs)/1 var(--font-ui);cursor:pointer;transition:all var(--duration-fast) var(--ease-out);background:0 0;border:0;align-items:center;gap:5px;padding:0 10px;display:inline-flex}.st-seg>button:hover:not([aria-pressed=true]):not(:disabled){color:var(--text)}.st-seg>button[aria-pressed=true],.st-page .ui-seg>button[aria-pressed=true]{background:var(--surface);color:var(--text);box-shadow:var(--shadow-1)}.st-seg>button:disabled{opacity:.45;cursor:not-allowed}.st-seg>button:focus-visible{outline:2px solid var(--focus-ring);outline-offset:1px}.st-chip{border:1px solid var(--rule);border-radius:var(--radius-pill);background:var(--surface);min-height:28px;color:var(--text-muted);font:500 var(--text-xs)/1 var(--font-ui);cursor:pointer;transition:all var(--duration-fast) var(--ease-out);align-items:center;gap:6px;padding:0 11px;display:inline-flex}.st-chip[aria-pressed=true]{color:var(--text);background:#eaf3fb;border-color:#b9d1e6}.st-chip .st-icon.is-on{color:var(--st-snap)}.st-check{font-size:var(--text-xs);cursor:pointer;align-items:center;gap:6px;display:inline-flex}.st-check input{accent-color:var(--st-ink)}.st-head{background:var(--surface);border-bottom:1px solid var(--rule);flex-wrap:wrap;align-items:center;gap:16px;padding:10px 16px;display:flex}.st-back{border-radius:var(--radius-pill);color:var(--text-muted);font-size:var(--text-sm);border:1px solid var(--rule);transition:all var(--duration-fast) var(--ease-out);align-items:center;gap:6px;padding:6px 12px 6px 8px;text-decoration:none;display:inline-flex}.st-back:hover{color:var(--text);background:var(--surface-hover)}.st-title{flex-direction:column;flex:0 auto;min-width:0;display:flex}.st-eyebrow{font-family:var(--font-title);font-size:var(--text-2xs);letter-spacing:var(--label-tracking);text-transform:uppercase;color:var(--st-trace);font-weight:600}.st-title h1{font-family:var(--font-title);font-size:var(--text-lg);white-space:nowrap;text-overflow:ellipsis;max-width:34ch;margin:0;font-weight:600;line-height:1.2;overflow:hidden}.st-meter{flex:360px;align-items:center;gap:12px;min-width:280px;max-width:560px;margin:0 auto;display:flex}.st-meter-score{font-family:var(--font-mono);font-size:var(--text-sm);color:var(--text-muted);white-space:nowrap}.st-meter-score 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dd{color:var(--text-muted);margin:0}.st-help kbd{border:1px solid var(--rule-strong);background:var(--surface-muted);min-width:24px;height:22px;font:600 var(--text-2xs)/1 var(--font-mono);border-bottom-width:2px;border-radius:5px;place-items:center;padding:0 5px;display:inline-grid}.st-notices:empty{display:none}.st-notices{flex-direction:column;display:flex}.st-notice{border-bottom:1px solid var(--warn-border);background:var(--warn-surface);font-size:var(--text-sm);margin:0;padding:8px 16px}.st-notice.is-ok{background:var(--state-ok-bg);color:var(--state-ok);animation:st-slide var(--duration-base) var(--ease-out);border-color:#cfe7d6}.st-notice-quiet{border-bottom:1px solid var(--rule);background:var(--surface);padding:6px 16px}.st-missing{max-width:640px;margin:40px auto}.st-loading{color:var(--text-muted);flex:1;justify-content:center;align-items:center;gap:10px;display:flex}.st-spinner{border:2px solid var(--rule);border-top-color:var(--st-trace);border-radius:50%;width:18px;height:18px;animation:.8s linear infinite st-spin}.st-body{min-height:0;transition:grid-template-columns var(--duration-slow) var(--ease-out);flex:1;grid-template-columns:minmax(0,1fr) 384px;display:grid}.st-centre{flex-direction:column;min-width:0;min-height:0;display:flex}.st-side{border-left:1px solid var(--rule);background:var(--surface-muted);scrollbar-width:thin;flex-direction:column;gap:8px;min-height:0;padding:8px 10px 24px;display:flex;overflow-y:auto}.st-stage{flex-direction:column;flex:1;min-height:0;display:flex}.st-stage-bar{border-bottom:1px solid var(--rule);background:var(--surface);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;padding:8px 12px;display:flex}.st-levels{border-radius:var(--radius-pill);background:var(--surface-muted);border:1px solid 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var(--rule);border-radius:var(--radius-pill);background:var(--surface);cursor:pointer;transition:opacity var(--duration-fast) var(--ease-out);align-items:center;gap:5px;padding:2px 9px 2px 6px;display:inline-flex}.st-layer[data-off]{opacity:.55}.st-layer small{color:var(--text-faint);font-family:var(--font-mono)}.st-layer input{accent-color:var(--st-ink);margin:0}.st-work{min-height:0;transition:grid-template-columns var(--duration-slow) var(--ease-out);flex:1;grid-template-columns:auto minmax(0,1fr) 0fr;display:grid}.st-work[data-view=split]{grid-template-columns:auto minmax(0,1fr) minmax(0,1fr)}.st-work[data-view="3d"]{grid-template-columns:auto 0fr minmax(0,1fr)}.st-work[data-view="3d"] .st-plan{visibility:hidden;overflow:hidden}.st-dock{border-right:1px solid var(--rule);background:var(--surface);scrollbar-width:none;z-index:4;flex-direction:column;gap:10px;padding:10px 8px;display:flex;overflow-y:auto}.st-dock-group{border-bottom:1px solid var(--border);flex-direction:column;gap:3px;padding-bottom:10px;display:flex}.st-dock-group:last-child{border-bottom:0}.st-dock-btn{width:38px;height:38px;color:var(--text-muted);cursor:pointer;transition:background var(--duration-fast) var(--ease-out),color var(--duration-fast) var(--ease-out),transform var(--duration-fast) var(--ease-out);background:0 0;border:1px solid #0000;border-radius:11px;place-items:center;padding:0;display:grid;position:relative}.st-dock-btn:hover:not(:disabled){background:var(--surface-hover);color:var(--text);transform:translateY(-1px)}.st-dock-btn:active:not(:disabled){transform:scale(.94)}.st-dock-btn[aria-pressed=true]{background:var(--st-ink);color:#fff;box-shadow:0 3px 10px #1c262247}.st-dock-btn.is-primary{background:var(--st-trace);color:#fff;box-shadow:0 3px 10px #c0602f59}.st-dock-btn.is-primary:hover:not(:disabled){color:#fff;background:#a8521f}.st-dock-btn:disabled{opacity:.32;cursor:not-allowed}.st-dock-btn:focus-visible{outline:2px solid var(--focus-ring);outline-offset:1px}.st-dock-btn:after{content:attr(data-tip) "  " attr(data-key);background:var(--st-ink);color:#fff;font:500 var(--text-xs)/1.2 var(--font-ui);white-space:pre;pointer-events:none;opacity:0;transition:all var(--duration-fast) var(--ease-out);z-index:30;border-radius:7px;padding:5px 9px;position:absolute;top:50%;left:calc(100% + 10px);transform:translate(-4px,-50%)}.st-dock-btn:hover:after,.st-dock-btn:focus-visible:after{opacity:1;transform:translateY(-50%)}.st-dock-busy{border:2px solid #ffffff80;border-top-color:#fff;border-radius:9px;animation:.8s linear infinite st-spin;position:absolute;inset:4px}.st-plan{flex-direction:column;min-width:0;min-height:0;display:flex}.st-prompt{border-bottom:1px solid var(--rule);background:var(--surface);min-height:40px;font-size:var(--text-xs);color:var(--text-muted);flex-wrap:wrap;align-items:center;gap:6px 12px;padding:6px 12px;display:flex}.st-prompt-text{flex:260px;line-height:1.4}.st-problem{color:var(--state-bad)}.st-length{animation:st-pop var(--duration-base) var(--ease-out);align-items:center;gap:8px;display:inline-flex}.st-length label{align-items:center;gap:6px;display:inline-flex}.st-length input{width:6.5em;font:inherit;font-family:var(--font-mono);border:1.5px solid var(--st-snap);border-radius:var(--radius-s);background:var(--surface);min-height:28px;padding:0 8px}.st-viewport{touch-action:none;background:radial-gradient(130% 120% at 50% 40%,#fbfcfa 0%,var(--st-table) 55%,#eef2ec 100%);outline:none;flex:1;min-height:240px;position:relative;overflow:hidden}.st-viewport:focus-visible{box-shadow:inset 0 0 0 2px var(--focus-ring)}.st-viewport[data-tool=pan]{cursor:grab}.st-viewport[data-tool=outline],.st-viewport[data-tool=rooms],.st-viewport[data-tool=scale],.st-viewport[data-tool=check],.st-viewport[data-tool=turn]{cursor:crosshair}.st-viewport[data-tool=openings],.st-viewport[data-tool=shape]{cursor:copy}.st-drawing-canvas,.st-svg{width:100%;height:100%;position:absolute;inset:0}.st-drawing-canvas{pointer-events:none}.st-svg{-webkit-user-select:none;user-select:none;display:block}.st-grid{fill:none;stroke:#e3e9e1;stroke-width:1px}.st-grid-fine{stroke:#eef2ec}.st-grid-major{stroke:#d3dccf}.st-footprint{fill:#c0602f0f;stroke:none}.st-trace{fill:none;stroke:var(--st-trace);stroke-width:2px;stroke-dasharray:6 4;animation:.9s linear infinite st-march}.st-trace.is-closed{fill:#c0602f0d;stroke-dasharray:none;animation:none}.st-room{fill:color-mix(in srgb,var(--room) 34%,transparent);stroke:color-mix(in srgb,var(--room) 80%,#1c2622);stroke-width:1.4px;transition:fill var(--duration-base) var(--ease-out)}.st-room[data-selected=true]{fill:color-mix(in srgb,var(--room) 55%,transparent);stroke:var(--st-ink);stroke-width:2.4px;filter:drop-shadow(0 3px 6px #1c262240)}.st-room-ghost{fill:color-mix(in srgb,var(--room) 40%,transparent);stroke:var(--st-ink);stroke-width:1.6px;stroke-dasharray:5 3;pointer-events:none}.st-room-label{pointer-events:none;font:600 12px var(--font-ui);fill:var(--text);paint-order:stroke;stroke:#ffffffd9;stroke-width:3px;stroke-linejoin:round}.st-room-area{font:500 11px var(--font-mono);fill:var(--text-muted)}.st-ndss rect{fill:var(--state-ok-bg);stroke:var(--state-ok-mark);stroke-width:1px}.st-ndss text{font:600 9.5px var(--font-ui);fill:var(--state-ok);stroke:none}.st-ndss[data-ok=false] rect{fill:var(--state-bad-bg);stroke:var(--state-bad-mark)}.st-ndss[data-ok=false] text{fill:var(--state-bad)}.st-edge{fill:none;stroke:var(--st-principal);stroke-width:4px;stroke-linecap:round;transition:stroke var(--duration-base) var(--ease-out)}.st-edge[data-tag=secondary]{stroke:var(--st-secondary);stroke-width:3px;stroke-dasharray:8 5}.st-edge[data-tag=blank]{stroke:var(--st-blank);stroke-width:2.2px}.st-edge[data-party]{stroke:#5c6a63;stroke-width:5px;stroke-dasharray:2 3}.st-edge-selected{fill:none;stroke:var(--st-gold);stroke-width:11px;stroke-linecap:round;opacity:.55}.st-edge-no circle{fill:var(--surface);stroke:var(--rule-strong)}.st-edge-no text{font:600 10px var(--font-mono);fill:var(--text-muted)}.st-opening-case{stroke:var(--surface);stroke-width:9px;stroke-linecap:butt}.st-opening-pane{stroke:var(--st-glass);stroke-width:5px;stroke-linecap:butt}.st-opening[data-kind=door] .st-opening-pane{stroke:var(--st-door)}.st-opening[data-glazing=obscure] .st-opening-pane{stroke:#c9d6dc;stroke-dasharray:3 2}.st-opening[data-glazing=high] .st-opening-pane{stroke:#6aa5c4}.st-opening[data-selected=true] 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5px;display:flex}.st-tile:hover:not(:disabled){box-shadow:var(--shadow-2);border-color:var(--rule-strong);transform:translateY(-3px)rotate(-1deg)}.st-tile:active:not(:disabled){cursor:grabbing;transform:scale(.96)}.st-tile[aria-pressed=true]{border-color:var(--st-ink);box-shadow:0 0 0 2px var(--st-ink)}.st-tile:disabled{opacity:.4;cursor:not-allowed}.st-tile:focus-visible{outline:2px solid var(--focus-ring);outline-offset:2px}.st-tile-swatch{background:linear-gradient(135deg,color-mix(in srgb,var(--tile) 70%,#fff),var(--tile));border-radius:6px;place-items:center;width:32px;height:22px;display:grid;box-shadow:inset 0 -2px #0000001f,0 1px 2px #10181426}.st-tile-swatch.is-opening{color:var(--st-snap);background:#eaf3fb}.st-tile-swatch.is-opening[data-kind=door]{color:var(--st-door);background:#f5ebe0}.st-tile-name{white-space:nowrap}.st-tile-size{font-family:var(--font-mono);color:var(--text-faint);font-size:9.5px}.st-3d-pane{border-left:1px solid var(--rule);min-width:0;min-height:0;animation:st-fade var(--duration-slow) var(--ease-out);position:relative;overflow:hidden}.st3d{background:linear-gradient(#e9eff0 0%,#f2f5f1 60%,#e5ece2 100%);position:absolute;inset:0}.st3d-host{position:absolute;inset:0}.st3d-canvas{cursor:grab;display:block;width:100%!important;height:100%!important}.st3d-canvas:active{cursor:grabbing}.st3d-status{text-align:center;color:var(--text-muted);font-size:var(--text-sm);place-items:center;margin:0;padding:24px;display:grid;position:absolute;inset:0}.st3d-badge{border-radius:var(--radius-pill);border:1px solid var(--rule);font-size:var(--text-2xs);color:var(--text-muted);background:#ffffffe0;margin:0;padding:4px 10px;position:absolute;top:12px;left:12px}.st3d-controls{border:1px solid var(--rule);box-shadow:var(--shadow-2);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);font-size:var(--text-xs);background:#ffffffe6;border-radius:14px;flex-wrap:wrap;align-items:center;gap:8px 12px;padding:8px 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