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#f0e2d8;--color-primary-soft: #f5ebe3;--color-text-inverse: #fffaf4;--color-success: #6e7c5b;--color-error: #a73e32;--shadow-sm: 0 1px 3px rgba(75, 57, 38, .035);--shadow-md: 0 4px 20px rgba(75, 57, 38, .07);--shadow-lg: 0 16px 64px rgba(75, 57, 38, .16);--radius-sm: 4px;--radius-md: 7px;--radius-lg: 12px;--transition-interactive: .16s cubic-bezier(.2, .7, .3, 1);--header-height: 64px;--left-width: 260px;--right-width: 250px;--mobile-nav-height: 64px}[data-theme=dark]{color-scheme:dark;--color-bg: #252420;--color-surface: #282721;--color-surface-2: #302f29;--color-surface-offset: #32312b;--color-surface-offset-2: #403b33;--color-border: rgba(226, 210, 185, .19);--color-divider: rgba(226, 210, 185, .11);--color-text: #ede8df;--color-text-muted: #b3aa9e;--color-text-faint: #a49a8d;--color-primary: #dc967c;--color-primary-hover: #edac94;--color-primary-active: #fac4ac;--color-primary-highlight: #503b30;--color-primary-soft: #3c3029;--color-text-inverse: #251a15;--color-success: #a7b991;--color-error: #ed9c8e;--shadow-sm: 0 1px 3px rgba(13, 10, 6, .08);--shadow-md: 0 4px 20px rgba(13, 10, 6, .16);--shadow-lg: 0 16px 64px rgba(13, 10, 6, .32)}*,*:before,*:after{box-sizing:border-box}*{margin:0}html{-webkit-text-size-adjust:100%;text-size-adjust:100%;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}body{width:100%;height:100vh;height:100dvh;overflow:hidden;font-family:var(--font-body);font-size:var(--text-sm);font-weight:400;line-height:1.5;color:var(--color-text);background:var(--color-bg)}button,input,select,textarea{font:inherit;color:inherit}button{appearance:none;border:0;background:none;cursor:pointer;-webkit-tap-highlight-color:transparent;touch-action:manipulation}button,input,select,a{transition:background var(--transition-interactive),color var(--transition-interactive),border-color var(--transition-interactive),box-shadow var(--transition-interactive),opacity var(--transition-interactive)}button:disabled{opacity:.34;cursor:not-allowed}button:disabled:hover{background:transparent}button:active:not(:disabled){transform:translateY(1px)}svg{display:block;flex:none}i[data-lucide],.lucide{width:17px;height:17px;flex:none;stroke-width:1.65}input,select{min-width:0}input[type=checkbox]{width:15px;height:15px;flex:none;accent-color:var(--color-primary);cursor:pointer}h1,h2,h3{line-height:1.25;font-weight:600}p{text-wrap:pretty}::selection{color:var(--color-text);background:var(--color-primary-highlight)}:focus-visible{outline:2px solid var(--color-primary);outline-offset:3px}::-webkit-scrollbar{width:5px;height:5px}::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:8px}::-webkit-scrollbar-track{background:transparent}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:fixed;top:-100px;left:var(--space-4);z-index:100;padding:var(--space-3) var(--space-4);background:var(--color-primary);color:var(--color-text-inverse);border-radius:var(--radius-md)}.skip-link:focus{top:var(--space-2)}.small-overline{font-size:var(--text-xs);letter-spacing:.12em;font-weight:600}.button{height:36px;display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:0 var(--space-3);border:1px solid transparent;border-radius:var(--radius-sm);font-size:var(--text-sm);font-weight:600;white-space:nowrap}.button-primary{color:var(--color-text-inverse);background:var(--color-primary);border-color:var(--color-primary)}.button-primary:hover{background:var(--color-primary-hover);border-color:var(--color-primary-hover)}.button-outline{background:var(--color-surface);border-color:var(--color-border)}.button-outline:hover{background:var(--color-surface-offset);border-color:var(--color-text-faint)}.button-quiet:hover{background:var(--color-surface-offset)}.icon-button{display:inline-flex;align-items:center;justify-content:center;width:34px;height:36px;flex:none;border-radius:var(--radius-sm);color:var(--color-text-muted)}.icon-button:hover{color:var(--color-text);background:var(--color-surface-offset)}.icon-button.active{color:var(--color-primary);background:var(--color-primary-soft)}.full-width{width:100%}.header-divider,.toolbar-divider{width:1px;height:20px;background:var(--color-divider);flex:none}.app-header{height:var(--header-height);display:flex;align-items:center;background:var(--color-surface);border-bottom:1px solid var(--color-border);position:relative;z-index:30}.brand{display:flex;align-items:center;gap:var(--space-3);width:var(--left-width);padding:0 var(--space-5);flex-shrink:0}.brand-mark{width:28px;height:34px;color:var(--color-primary)}.brand h1{font-family:var(--font-display);font-size:var(--text-xl);font-weight:600;white-space:nowrap;letter-spacing:-.035em}.brand h1 span{color:var(--color-primary);font-weight:500;margin-inline:var(--space-1)}.header-project{padding-left:var(--space-5);border-left:1px solid var(--color-divider);display:flex;flex-direction:column;gap:2px;min-width:150px}.project-name{font-size:var(--text-sm);font-weight:600}.save-status{font-size:var(--text-xs);color:var(--color-text-muted)}.save-status.dirty,.save-status.unsaved{color:var(--color-primary)}.header-actions{margin-left:auto;padding:0 var(--space-4);display:flex;align-items:center;gap:var(--space-2)}.history-actions{display:flex;gap:0}.format-label{font-size:var(--text-xs);font-weight:500;opacity:.7}.editor-shell{height:calc(100% - var(--header-height));display:grid;grid-template-columns:var(--left-width) minmax(0,1fr) var(--right-width)}.left-panel,.right-panel{min-width:0;min-height:0;display:flex;flex-direction:column;background:var(--color-surface);position:relative;z-index:20}.left-panel{border-right:1px solid var(--color-border)}.right-panel{border-left:1px solid var(--color-border)}.left-panel-scroll,.inspector-scroll{overflow:auto;min-height:0;flex:1;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:var(--color-border) transparent}.panel-tabs{flex:none;height:49px;display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-2);padding:0 var(--space-4);border-bottom:1px solid var(--color-divider)}.panel-tab{position:relative;height:100%;padding:0 var(--space-1);color:var(--color-text-muted);font-weight:500;font-size:var(--text-sm)}.panel-tab:after{position:absolute;content:"";bottom:-1px;height:2px;left:0;right:0;background:transparent}.panel-tab:hover{color:var(--color-text)}.panel-tab.active{color:var(--color-primary);font-weight:700}.panel-tab.active:after{background:var(--color-primary)}.panel-section{padding:var(--space-5) var(--space-4);border-bottom:1px solid var(--color-divider)}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:var(--space-2);margin-bottom:var(--space-2)}.section-heading 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input{position:absolute;right:0;width:30px;height:22px;opacity:0}.toggle-switch{width:29px;height:17px;background:var(--color-surface-offset-2);border:1px solid var(--color-border);border-radius:20px;position:relative;flex:none;pointer-events:none;transition:background var(--transition-interactive)}.toggle-switch:after{content:"";position:absolute;width:11px;height:11px;left:2px;top:2px;border-radius:50%;background:var(--color-surface-2);box-shadow:var(--shadow-sm);transition:transform var(--transition-interactive)}.master-toggle input:checked+.toggle-switch{background:var(--color-primary);border-color:var(--color-primary)}.master-toggle input:checked+.toggle-switch:after{transform:translate(12px);background:var(--color-text-inverse)}.master-toggle input:focus-visible+.toggle-switch{outline:2px solid var(--color-primary);outline-offset:3px}.layer-list{padding-top:var(--space-1);border-top:1px solid var(--color-divider)}.range-heading{display:flex;justify-content:space-between;align-items:center;color:var(--color-text-muted);font-size:var(--text-xs)}.range-heading output{color:var(--color-text);font-variant-numeric:tabular-nums;background:var(--color-surface-offset);border-radius:var(--radius-sm);padding:var(--space-1) var(--space-2)}.range-input{width:100%;height:30px;accent-color:var(--color-primary);cursor:pointer;margin-top:var(--space-1)}.snap-row{margin-top:var(--space-2)}.panel-footnote{display:flex;align-items:flex-start;gap:var(--space-2);padding:var(--space-4);font-size:var(--text-xs);color:var(--color-text-muted);line-height:1.6}.panel-footnote .lucide{margin-top:var(--space-1);width:15px;height:15px}.scene-panel{min-height:0;min-width:0;position:relative;overflow:hidden;background:#ece8df}#viewport{position:absolute;inset:0 0 30px;overflow:hidden;outline-offset:-4px;touch-action:none}#viewport>canvas{display:block;width:100%;height:100%;max-width:none;outline:none}.viewport-toolbar{position:absolute;top:var(--space-4);left:var(--space-4);right:var(--space-4);display:flex;justify-content:space-between;align-items:flex-start;gap:var(--space-2);pointer-events:none;z-index:5}.floating-surface{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-md);pointer-events:auto}.floor-control,.camera-control{display:flex;align-items:center;padding:var(--space-1);gap:var(--space-1)}.toolbar-label{padding:0 var(--space-2);font-size:var(--text-xs);color:var(--color-text-muted)}.segmented-control{display:flex;gap:2px;align-items:center}.segmented-control button{height:30px;min-width:31px;display:flex;align-items:center;justify-content:center;gap:var(--space-1);padding:0 var(--space-2);border-radius:var(--radius-sm);font-size:var(--text-xs);color:var(--color-text-muted);font-weight:500}.segmented-control button:hover{background:var(--color-surface-offset);color:var(--color-text)}.segmented-control button.active{color:var(--color-primary);background:var(--color-primary-highlight);font-weight:700}.view-segments .lucide{width:14px;height:14px}.camera-control .icon-button{width:29px;height:30px}.camera-control .icon-button .lucide{width:16px;height:16px}.zoom-controls{position:absolute;right:var(--space-4);top:76px;z-index:4;display:flex;flex-direction:column;padding:var(--space-1)}.zoom-controls .icon-button{width:44px;height:44px}.object-import-panel{margin-block:var(--space-4);padding-block:var(--space-3);border-block:1px solid var(--color-border)}.import-unit-label{display:block;font-size:var(--text-xs);margin-top:var(--space-3);margin-bottom:var(--space-1)}.object-import-panel select{width:100%;min-height:44px;padding:var(--space-2);border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface)}.import-status{font-size:var(--text-xs);overflow-wrap:anywhere;line-height:1.6;margin-top:var(--space-2)}#btn-export-object{margin-top:var(--space-2)}.scene-caption{position:absolute;top:81px;left:var(--space-5);display:flex;flex-direction:column;gap:var(--space-1);color:#777065;pointer-events:none;z-index:2}.scene-caption>span:last-child{font-size:var(--text-xs);color:#8a8175}.scene-caption .small-overline{letter-spacing:.14em}.axis-indicator{position:absolute;bottom:124px;right:var(--space-5);display:flex;flex-direction:column;align-items:center;gap:var(--space-1);color:#776f64;pointer-events:none;font-size:var(--text-xs)}.axis-indicator .lucide{width:32px;height:32px;stroke-width:1.15}.scene-bottom{position:absolute;z-index:5;bottom:46px;left:var(--space-3);right:var(--space-3);display:flex;flex-direction:column;align-items:center;gap:var(--space-3);pointer-events:none}.manipulator-toolbar{display:flex;gap:var(--space-1);align-items:center;padding:var(--space-1)}.ruler-panel{width:min(450px,100%);padding:10px 14px;pointer-events:auto;text-align:left}.ruler-panel[hidden]{display:none}.ruler-heading{display:flex;align-items:center;justify-content:space-between;gap:8px}.ruler-heading strong{font-size:13px;font-variant-numeric:tabular-nums}.ruler-panel p{font-size:12px;margin:0 0 8px;color:var(--color-text)}.ruler-actions{display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:11px}.ruler-actions button{border:0;background:transparent;padding:6px 0;font:inherit;color:var(--color-text);text-decoration:underline;cursor:pointer}.ruler-world-label{position:absolute;z-index:3;transform:translate(-50%,-140%);padding:4px 8px;border-radius:5px;background:#783c29;color:#fff8ef;font-size:12px;font-weight:700;font-variant-numeric:tabular-nums;white-space:nowrap;pointer-events:none;box-shadow:0 2px 8px #0003}#viewport canvas.ruler-active{cursor:crosshair}.tool-button{height:36px;display:flex;align-items:center;justify-content:center;gap:var(--space-2);padding:0 var(--space-3);color:var(--color-text-muted);border-radius:var(--radius-sm);font-size:var(--text-xs);white-space:nowrap}.tool-button .lucide{width:16px;height:16px}.tool-button:hover{color:var(--color-text);background:var(--color-surface-offset)}.tool-button.active{color:var(--color-primary);background:var(--color-primary-highlight)}kbd{display:inline-flex;justify-content:center;min-width:18px;padding:0 var(--space-1);border:1px solid var(--color-border);background:var(--color-surface-offset);color:var(--color-text-muted);font-family:var(--font-body);font-size:var(--text-xs);line-height:1.55;border-radius:3px;font-weight:500}.tool-button kbd{background:transparent;border:none;color:var(--color-text-faint);min-width:auto;padding:0}.viewport-hint{display:flex;align-items:center;gap:var(--space-2);color:#7b7266;font-size:var(--text-xs)}.scene-footer{position:absolute;bottom:0;left:0;right:0;height:30px;padding:0 var(--space-4);display:flex;align-items:center;gap:var(--space-4);background:var(--color-surface);border-top:1px solid var(--color-divider);font-size:var(--text-xs);color:var(--color-text-muted);z-index:6}#scene-status{display:flex;align-items:center;gap:var(--space-2);min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.status-dot{width:5px;height:5px;border-radius:50%;background:var(--color-success);flex:none}#object-count{margin-left:auto;white-space:nowrap;font-variant-numeric:tabular-nums}.scene-units{white-space:nowrap}.room-label,.room-tag{position:absolute;padding:var(--space-1) var(--space-2);background:#fffcf3de;border:1px solid rgba(91,75,50,.14);border-radius:var(--radius-sm);color:#574d40;font-family:var(--font-body);font-size:var(--text-xs);line-height:1.35;text-align:center;white-space:nowrap;pointer-events:none;box-shadow:0 2px 8px #392b190d}.room-label small,.room-tag small{display:block;color:#776b5c;font-size:var(--text-xs)}.loading-overlay{position:absolute;inset:0 0 30px;z-index:15;display:flex;justify-content:center;align-items:center;background:#ece8df;transition:opacity .3s ease,visibility .3s ease}.loading-overlay.hidden,.loading-overlay.is-hidden,.loading-overlay.loaded{opacity:0;visibility:hidden;pointer-events:none}.loading-card{width:min(300px,calc(100% - 48px));text-align:center;color:#655b4c}.loading-icon{width:32px!important;height:32px!important;stroke-width:1.25;margin:0 auto var(--space-5);color:#a45239}.loading-title{font-size:var(--text-lg);font-weight:600;color:#493f33;margin-bottom:var(--space-2)}#loading-message{font-size:var(--text-xs);line-height:1.6;min-height:40px}.load-track{margin:var(--space-5) auto var(--space-3);width:192px;max-width:100%;height:2px;background:#d5cbbd;overflow:hidden}#load-progress{height:100%;width:0;background:#a45239;transition:width .25s ease}.loading-footnote{font-size:var(--text-xs);color:#827565;letter-spacing:.03em}.inspector-heading{min-height:49px;flex:none;display:flex;align-items:center;justify-content:space-between;gap:var(--space-2);padding:0 var(--space-4);border-bottom:1px solid var(--color-divider)}.inspector-heading h2{font-size:var(--text-sm);font-weight:600}.inspector-heading-icon{color:var(--color-text-faint);width:15px;height:15px}.selection-prompt{padding:var(--space-10) var(--space-5) var(--space-8);text-align:center;border-bottom:1px solid var(--color-divider)}.empty-cursor{width:32px;height:32px;stroke-width:1.2;margin:0 auto var(--space-5);color:var(--color-primary)}.selection-prompt h3{font-size:var(--text-lg);font-weight:500;line-height:1.5;margin-bottom:var(--space-3);letter-spacing:-.025em}.selection-prompt p{font-size:var(--text-xs);line-height:1.75;color:var(--color-text-muted)}.selection-tip{display:flex;align-items:center;justify-content:center;gap:var(--space-2);margin-top:var(--space-5);font-size:var(--text-xs);color:var(--color-text-faint)}.selection-tip .lucide{width:14px;height:14px}.project-facts{padding:var(--space-5) var(--space-4)}.project-facts h3{color:var(--color-text-faint);margin-bottom:var(--space-5);font-weight:500}.project-facts dl{display:flex;flex-direction:column;gap:var(--space-4)}.project-facts dl>div{display:flex;justify-content:space-between;gap:var(--space-3);font-size:var(--text-xs)}.project-facts dt{color:var(--color-text-muted)}.project-facts dd{text-align:right;font-weight:500}.project-facts dd span{color:var(--color-text-muted);font-weight:400}.files-info{display:flex;align-items:flex-start;gap:var(--space-2);margin-top:var(--space-6);padding-top:var(--space-4);border-top:1px solid var(--color-divider);color:var(--color-text-muted);font-size:var(--text-xs);line-height:1.7}.files-info .lucide{margin-top:var(--space-1);width:15px;height:15px}.save-note{display:flex;gap:var(--space-2);align-items:flex-start;flex:none;padding:var(--space-4);border-top:1px solid var(--color-divider);background:var(--color-surface-offset)}.save-note .lucide{margin-top:var(--space-1);width:15px;height:15px;color:var(--color-text-faint)}.save-note p{color:var(--color-text-muted);font-size:var(--text-xs);line-height:1.65}.inspector-section{padding:var(--space-4);border:0;border-bottom:1px solid var(--color-divider);min-width:0}fieldset.inspector-section{padding-top:var(--space-3)}.inspector-section legend{padding-top:var(--space-4);padding-inline:0;float:left;width:100%;font-size:var(--text-xs);font-weight:700;margin-bottom:var(--space-3)}.inspector-section legend+*{clear:both}.inspector-section legend 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