:root{color:#263a36;font-synthesis:none;--green:#0f766e;--muted:#7c8984;--border:#e1e6e1;--orange:#d8794f;background:#f6f7f5;font-family:Inter,Segoe UI,Microsoft YaHei,sans-serif;font-size:14px}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer;color:inherit;white-space:nowrap;background:0 0;border:1px solid #0000;border-radius:6px;padding:8px 11px;transition:background .15s,border-color .15s}button:hover:not(:disabled){background:#e8eeea}button:disabled{opacity:.35;cursor:default}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible{outline-offset:3px;outline:2px solid #159789}a{color:inherit;text-decoration:none}a:hover{color:var(--green)}[hidden]{display:none!important}.site-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;max-width:1540px;height:82px;margin:auto;padding:0 44px;display:flex}.brand{letter-spacing:.5px;align-items:center;gap:12px;font-size:16px;font-weight:650;display:flex}.brand-mark{background:var(--green);color:#fff;border-radius:10px;place-items:center;width:38px;height:38px;font-size:33px;font-weight:400;display:grid}.brand small{letter-spacing:2px;color:var(--muted);margin-top:4px;font-size:10px;font-weight:400;display:block}.site-header nav{align-items:center;gap:26px;font-size:12px;display:flex}.site-header nav a span{margin-left:6px}.text-button{color:#58766c;padding:0;font-size:12px}.privacy-badge{color:#38705b;background:#e8f0e9;border-radius:20px;align-items:center;gap:7px;padding:7px 12px;font-size:11px;display:flex}.privacy-badge i,.scene-badge i,.status-dot{background:#659b70;border-radius:50%;width:5px;height:5px;display:inline-block}.app{max-width:1540px;margin:auto;padding:34px 44px 12px}.workspace-heading{justify-content:space-between;align-items:flex-end;margin-bottom:27px;display:flex}.eyebrow{letter-spacing:2.2px;color:#698679;margin:0 0 10px;font-size:10px;font-weight:600}h1{letter-spacing:1px;margin:0;font-size:30px;font-weight:600;line-height:1.5}h1 span{color:var(--orange)}.subtitle{color:var(--muted);margin:7px 0 0;font-size:12px}.heading-note{color:#7d8a83;gap:22px;padding-bottom:5px;font-size:11px;display:flex}.heading-note span:before{content:"✓";color:#6b8c75;margin-right:7px}.workspace{background:#fff;border:1px solid #dce3dc;border-radius:12px;overflow:hidden;box-shadow:0 7px 35px #253f3010}.toolbar{border-bottom:1px solid var(--border);justify-content:space-between;gap:10px;height:60px;padding:10px 16px;display:flex}.toolbar-group{align-items:center;gap:5px;display:flex}.toolbar button{font-size:12px}.primary{background:var(--green);color:#fff;border:1px solid var(--green);font-size:12px}.primary:hover:not(:disabled){background:#095e57}.primary span{vertical-align:-1px;margin-right:3px;font-size:17px;line-height:14px}.subtle{color:#62766c}.divider{background:var(--border);width:1px;height:20px;margin:0 8px}.workspace-body{grid-template-columns:228px minmax(0,1fr) 192px;height:calc(100dvh - 340px);min-height:560px;max-height:880px;display:grid}.model-panel{border-right:1px solid var(--border);flex-direction:column;min-height:0;display:flex}.panel-heading{justify-content:space-between;align-items:center;padding:20px 18px 16px;font-size:12px;font-weight:600;display:flex}.tiny-label{color:var(--muted);background:#f0f3f0;border-radius:4px;padding:2px 6px;font-size:10px;font-weight:400}.current-file{align-items:center;gap:10px;min-width:0;padding:0 18px 16px;display:flex}.file-icon{color:#628779;background:#eff3ef;border-radius:6px;place-items:center;min-width:32px;height:36px;font-size:22px;display:grid}.current-file>div{min-width:0}.current-file strong{text-overflow:ellipsis;white-space:nowrap;font-size:11px;font-weight:600;display:block;overflow:hidden}.current-file small{color:var(--muted);margin-top:6px;font-size:10px;display:block}.structure-actions{border-bottom:1px solid var(--border);gap:4px;padding:0 14px 8px;display:flex}.structure-actions button{color:#70877a;padding:5px 6px;font-size:10px}.mesh-list{flex:1;min-height:100px;padding:8px 10px;overflow:auto}.empty-list{padding:16px 8px;font-size:11px;line-height:1.8}.muted{color:var(--muted);font-size:12px;line-height:1.8}.mesh-row{border-radius:5px;align-items:center;gap:7px;padding:2px 6px;display:flex}.mesh-row.active{background:#e5f0e9}.mesh-row input{accent-color:var(--green);flex:none;width:13px;height:13px}.mesh-row button{text-align:left;text-overflow:ellipsis;flex:1;min-width:0;padding:7px 2px;font-size:11px;overflow:hidden}.stats-panel{border-top:1px solid var(--border);padding:12px 18px 2px}h2{font-size:12px;font-weight:600}.stats-panel h2{justify-content:space-between;align-items:center;margin:4px 0 12px;display:flex}.stats-panel h2 small{color:var(--muted);font-size:9px;font-weight:400}dl{margin:0 0 18px;font-size:11px}dl>div{justify-content:space-between;margin:9px 0;display:flex}dt{color:var(--muted)}dd{font-variant-numeric:tabular-nums;margin:0;font-family:Consolas,monospace}.dimensions dt{align-items:center;gap:6px;display:flex}.dimensions i{border-radius:1px;width:4px;height:4px}.axis-x{color:#ce7660;background:#ce7660}.axis-y{color:#749d6c;background:#749d6c}.axis-z{color:#638fb7;background:#638fb7}.local-note{color:#81917e;background:#f3f6f2;border-radius:7px;align-items:flex-start;gap:8px;margin:auto 15px 14px;padding:10px;display:flex}.local-note span{color:#68856c;font-size:16px}.local-note p{margin:0;font-size:10px;line-height:1.7}.viewport-shell{background:#eef1ec;min-width:0;min-height:0;position:relative;overflow:hidden}.viewport-shell.grid-background{background-image:linear-gradient(#c7d1c14d 1px,#0000 1px),linear-gradient(90deg,#c7d1c14d 1px,#0000 1px);background-size:28px 28px}#viewport{position:absolute;inset:0}#viewport canvas{touch-action:none;display:block}.welcome{pointer-events:none;flex-direction:column;justify-content:center;align-items:center;padding:20px;display:flex;position:absolute;inset:0}.welcome button{pointer-events:auto}.cube-illustration{width:152px;height:152px;margin:-28px 0 13px}.welcome .eyebrow{color:#819487;letter-spacing:2.3px;font-size:9px}.welcome h2{letter-spacing:1px;margin:5px 0 10px;font-size:23px;font-weight:500}.welcome>p:not(.eyebrow){color:#8b978e;margin:0;font-size:12px}.format-tags{gap:6px;margin:22px 0 28px;display:flex}.format-tags span{color:#84917e;background:#f5f7f280;border:1px solid #d9e1d5;border-radius:4px;padding:5px 7px;font-size:9px}.demo-button{color:#567b64;background:#f8faf6;border:1px solid #cfdace;border-radius:30px;padding:10px 17px;font-size:11px}.demo-button span{color:var(--orange);margin-left:8px}.welcome .upload-hint{color:#9ba397!important;margin-top:17px!important;font-size:10px!important}.view-top,.view-bottom{pointer-events:none;justify-content:space-between;align-items:center;display:flex;position:absolute;left:20px;right:20px}.view-top{top:15px}.view-top button{pointer-events:auto}.scene-badge{color:#83917f;background:#ffffff9c;border:1px solid #dfe6d9;border-radius:4px;align-items:center;gap:7px;padding:6px 9px;font-size:10px;display:flex}.small-button{background:#ffffff9c;border:1px solid #dfe6d9;padding:5px 8px;font-size:10px}.view-bottom{bottom:20px}.interaction-hint{color:#82917e;font-size:9px}.interaction-hint b{color:#b4beb0;margin:0 7px;font-weight:400}.axis-widget{width:42px;height:42px;font-family:Consolas,monospace;font-size:10px;position:relative}.axis-widget span{background:0 0;position:absolute}.axis-widget:before,.axis-widget:after{content:"";transform-origin:bottom;background:#a7b8a0;width:1px;height:27px;position:absolute;top:4px;left:21px}.axis-widget:after{transform:rotate(60deg)}.axis-widget:before{transform:rotate(-60deg)}.axis-widget .axis-y{top:-1px;left:19px}.axis-widget .axis-x{bottom:4px;right:0}.axis-widget .axis-z{bottom:4px;left:0}.view-controls{background:#ffffffde;border:1px solid #dce4d7;border-radius:6px;gap:2px;padding:3px;display:flex;position:absolute;bottom:18px;left:50%;transform:translate(-50%)}.view-controls button{padding:6px 9px;font-size:10px}.view-controls .active{color:#4f745b;background:#e7efe4}.display-panel{border-left:1px solid var(--border);padding:0 17px;overflow:auto}.display-panel .panel-heading{padding:20px 0 10px}.field-label{color:#7a8b80;margin:20px 0 9px;font-size:10px;display:block}select{color:#5e7266;background:#fafbf9;border:1px solid #e2e8df;border-radius:5px;width:100%;padding:9px 8px;font-size:11px}.swatches{align-items:center;gap:9px;margin:10px 0 24px;display:flex}.swatches>button{background:var(--swatch);border:1px solid #d4ded0;border-radius:50%;width:23px;height:23px;padding:0}.swatches>button.selected{outline-offset:3px;outline:1px solid #6d9677}.custom-color{color:#99a490;cursor:pointer;border:1px dashed #c4d2bd;border-radius:50%;place-items:center;width:23px;height:23px;font-size:14px;display:grid;position:relative;overflow:hidden}.custom-color input{opacity:0;cursor:pointer;width:100%;height:100%;position:absolute;inset:0}.toggle-row{color:#728477;justify-content:space-between;align-items:center;margin:18px 0;font-size:11px;display:flex}.toggle-row input{appearance:none;cursor:pointer;background:#dfe6db;border-radius:10px;width:28px;height:16px;margin:0;position:relative}.toggle-row input:before{content:"";background:#fff;border-radius:50%;width:12px;height:12px;transition:left .15s;position:absolute;top:2px;left:2px}.toggle-row input:checked{background:#6b9171}.toggle-row input:checked:before{left:14px}.toggle-row input:disabled{opacity:.4;cursor:default}.panel-divider{background:var(--border);height:1px;margin:26px 0}.support-note>span,.tips-box>span{color:#5c7864;font-size:10px}.support-note p{color:#8a9a8b;letter-spacing:.3px;font-size:9px;line-height:2.1}.support-note button{margin-top:5px;font-size:10px}.tips-box{border-left:2px solid #dbc39c;margin-top:28px;padding-left:12px}.tips-box>span{color:#9d8967}.tips-box p{color:#969d8c;margin:7px 0;font-size:10px;line-height:1.9}.workspace-footer{border-top:1px solid var(--border);color:#90a08f;justify-content:space-between;align-items:center;height:35px;padding:0 17px;font-size:9px;display:flex}.workspace-footer>span:first-child{align-items:center;gap:7px;min-width:0;display:flex}.workspace-footer #status-text{text-overflow:ellipsis;white-space:nowrap;max-width:70vw;overflow:hidden}.below-workspace{color:#7c8d7d;justify-content:space-between;align-items:center;padding:14px 1px;font-size:10px;display:flex}.below-workspace p{margin:0}.below-workspace p span{color:#9caa9b;margin-left:14px}.below-workspace a{color:#94a08f;font-size:9px}.site-footer{color:#a1aaa0;border-top:1px solid #e5e9e2;justify-content:space-between;max-width:1540px;margin:auto;padding:25px 44px 22px;font-size:9px;display:flex}.loading-overlay{z-index:5;text-align:center;background:#eef1eced;flex-direction:column;justify-content:center;align-items:center;padding:20px;display:flex;position:absolute;inset:0}.loading-overlay strong{margin-top:18px;font-size:14px;font-weight:500}.loading-overlay p{color:#8b9c8a;font-size:11px}.spinner{border:2px solid #cddcc8;border-top-color:var(--green);border-radius:50%;width:30px;height:30px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}#drop-overlay{z-index:10;color:var(--green);pointer-events:none;background:#e2efe4ed;border:2px dashed #668e71;border-radius:8px;place-items:center;font-size:20px;display:grid;position:absolute;inset:12px}.toast{color:#fff;z-index:30;background:#273e35;border-radius:8px;max-width:90vw;padding:13px 20px;font-size:12px;line-height:1.7;position:fixed;bottom:26px;left:50%;transform:translate(-50%);box-shadow:0 5px 28px #0002}dialog{color:#314a3b;border:1px solid #dbe5d7;border-radius:12px;width:min(520px,100vw - 32px);max-height:85dvh;padding:23px}dialog::backdrop{-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);background:#1b312769}.dialog-heading{justify-content:space-between;align-items:center;display:flex}.dialog-heading h2{margin:0;font-size:18px}.dialog-heading>button{color:#80947c;padding:0 6px;font-size:23px}.dialog-body{max-height:58dvh;margin:18px 0 22px;padding-right:8px;overflow:auto}.dialog-body h3{margin:20px 0 7px;font-size:12px}.dialog-body p{color:#768672;font-size:12px;line-height:1.9}.dialog-confirm{margin-left:auto;padding:10px 20px;display:block}#main-file-options{gap:6px;display:grid}#main-file-options button{text-align:left;white-space:normal;word-break:break-all;border:1px solid var(--border)}.workspace:fullscreen{border-radius:0;flex-direction:column;display:flex}.workspace:fullscreen .workspace-body{flex:1;height:auto;max-height:none}.workspace:fullscreen .toolbar{flex-shrink:0}@media (width>=1600px){.workspace-body{min-height:640px}.app{padding-top:40px}.workspace-heading{margin-bottom:34px}}@media (width<=1100px){.site-header,.app,.site-footer{padding-left:24px;padding-right:24px}.workspace-body{grid-template-columns:190px minmax(0,1fr) 160px}.display-panel{padding:0 12px}.panel-heading,.current-file{padding-left:14px;padding-right:14px}.view-controls{bottom:52px}.below-workspace p span{display:none}.heading-note{gap:12px}.site-header nav{gap:18px}}@media (width<=800px){.workspace-body{grid-template-columns:170px minmax(0,1fr);height:660px;min-height:0;max-height:none}.display-panel{border-left:0;border-top:1px solid var(--border);flex-wrap:wrap;grid-column:1/-1;align-items:center;gap:12px;padding:12px 16px;display:flex;overflow:visible}.display-panel .panel-heading,.display-panel .support-note,.display-panel .tips-box,.display-panel .panel-divider{display:none}.display-panel .field-label{margin:0;font-size:10px}.display-panel select{width:110px;font-size:10px}.swatches{gap:7px;margin:0}.toggle-row{gap:8px;margin:0}.workspace-body{grid-template-rows:minmax(0,1fr) auto}.heading-note{display:none}.cube-illustration{width:128px;height:128px}.welcome h2{font-size:21px}.format-tags{gap:4px}.format-tags span{padding:4px}.welcome{padding:14px}.view-bottom{left:12px;right:12px}.site-header nav{gap:12px}.toolbar{padding:10px}.toolbar button{padding:8px;font-size:11px}.divider{margin:0 3px}.below-workspace a{font-size:8px}}@media (width<=540px){.site-header{height:68px;padding:0 16px}.brand{gap:8px;font-size:13px}.brand-mark{border-radius:8px;width:30px;height:30px;font-size:27px}.brand small{letter-spacing:1px;font-size:8px}.site-header nav>a,.site-header .privacy-badge{display:none}.app{padding:24px 12px 6px}.workspace-heading{margin:0 4px 20px}h1{font-size:25px}.eyebrow{font-size:8px}.subtitle{font-size:11px}.toolbar button span{display:none}.toolbar #open-files span{display:inline}.toolbar #open-folder{display:none}.toolbar #fit,.toolbar #reset,.toolbar #screenshot,.toolbar #export-open,.toolbar #fullscreen{padding:6px 8px;font-size:18px}.toolbar .primary{padding:8px 11px;font-size:11px}.toolbar{height:54px;padding:9px 10px}.workspace-body{flex-direction:column;height:auto;min-height:0;display:flex}.viewport-shell{flex:none;order:0;height:460px}.model-panel{border-right:0;border-top:1px solid var(--border);order:2;grid-template-columns:1fr 1fr;display:grid}.model-panel>.panel-heading{grid-column:1/-1;padding:14px 16px 10px}.current-file{grid-column:1/-1;padding-bottom:8px}.structure-actions{grid-column:1/-1;padding:0 10px 6px}.mesh-list{min-height:110px;max-height:180px}.stats-panel{border-top:0;border-left:1px solid var(--border);padding:10px 15px}.stats-panel h2{margin-top:0;margin-bottom:8px;font-size:10px}dl{margin-bottom:12px;font-size:10px}dl>div{margin:6px 0}.local-note{display:none}.display-panel{order:1;gap:10px;padding:12px}.display-panel>.field-label{display:none}.display-panel select{width:calc(50% - 5px);font-size:11px}.display-panel>.swatches{width:calc(100% - 190px)}.toggle-row{font-size:10px}.swatches>button,.custom-color{width:20px;height:20px}.view-controls{bottom:16px}.view-bottom{bottom:59px}.welcome .cube-illustration{width:125px;height:125px;margin-top:-5px}.format-tags{margin:16px 0 20px}.workspace-footer{font-size:8px}.below-workspace{padding:14px 4px;display:block}.below-workspace>a{margin-top:9px;display:block}.site-footer{padding:18px 16px;font-size:8px}.workspace:fullscreen .viewport-shell{flex:1;height:auto;min-height:300px}.workspace:fullscreen .model-panel{display:none}.workspace:fullscreen .workspace-body{display:flex}.toast{width:max-content;max-width:90vw}}@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}.spinner{animation-duration:2s}}