:root{--bg: #f3f4f6;--panel: #ffffff;--panel-2: #f5f6f8;--border: #e2e5ea;--text: #1d2127;--muted: #6b7280;--faint: #9aa1ab;--accent: #1f6feb;--accent-soft: #e7effd;--vp-top: #f5f7fa;--vp-bottom: #d5dae2;--shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 6px 20px rgba(16, 24, 40, .1);--radius: 10px;color-scheme:light}:root[data-theme=dark]{--bg: #16181b;--panel: #1e2125;--panel-2: #262a2f;--border: #31363d;--text: #e5e7eb;--muted: #9aa3ae;--faint: #6b7380;--accent: #5b96ff;--accent-soft: rgba(91, 150, 255, .16);--vp-top: #30353c;--vp-bottom: #1a1c20;--shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 6px 20px rgba(0, 0, 0, .35);color-scheme:dark}@media (prefers-color-scheme: dark){:root:not([data-theme=light]){--bg: #16181b;--panel: #1e2125;--panel-2: #262a2f;--border: #31363d;--text: #e5e7eb;--muted: #9aa3ae;--faint: #6b7380;--accent: #5b96ff;--accent-soft: rgba(91, 150, 255, .16);--vp-top: #30353c;--vp-bottom: #1a1c20;--shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 6px 20px rgba(0, 0, 0, .35);color-scheme:dark}}*{box-sizing:border-box}html,body{margin:0;height:100%;overflow:hidden;background:var(--bg);color:var(--text);font:13px/1.4 -apple-system,BlinkMacSystemFont,Segoe UI,Inter,system-ui,sans-serif;-webkit-font-smoothing:antialiased}button,select,input{font:inherit;color:inherit}[hidden]{display:none!important}.muted{color:var(--muted)}.fine{font-size:11.5px;color:var(--muted);margin:8px 0 0}.mono{font-variant-numeric:tabular-nums;font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:11.5px}.card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}#app{display:grid;grid-template-rows:auto 1fr auto;height:100vh;height:100dvh}.toolbar{display:flex;align-items:stretch;padding:6px 8px 4px;background:var(--panel);border-bottom:1px solid var(--border);overflow-x:auto;scrollbar-width:none}.brand{display:flex;align-items:center;gap:8px;padding:0 14px 0 6px;font-weight:650;white-space:nowrap}.brand-mark{width:18px;height:18px;border-radius:5px;background:linear-gradient(135deg,var(--accent),#7aa7ff)}.tb-group{display:flex;flex-direction:column;align-items:center;padding:0 6px;border-left:1px solid var(--border)}.tb-group-end{border-left:0;justify-content:center}.tb-row{display:flex;gap:2px}.tb-spacer{flex:1}.tb-label{font-size:10px;letter-spacing:.07em;text-transform:uppercase;color:var(--faint);margin-top:1px}.tb-btn{display:flex;flex-direction:column;align-items:center;gap:2px;min-width:54px;padding:5px 5px 3px;border:0;border-radius:7px;background:transparent;font-size:11px;white-space:nowrap;cursor:pointer}.tb-btn i svg{width:22px;height:22px;display:block}.tb-btn:hover:not(:disabled){background:var(--panel-2)}.tb-btn:disabled{opacity:.38;cursor:default}.tb-btn.active{background:var(--accent-soft);color:var(--accent);box-shadow:inset 0 0 0 1.5px var(--accent)}.tb-compact{min-width:36px;padding:7px}.tb-icon{min-width:38px;padding:5px 6px 3px;justify-content:center}.tb-icon i svg{width:22px;height:22px}.tb-icon:after{content:"";height:15px}.tb-split{display:flex;align-items:stretch}.tb-split .tb-btn{border-top-right-radius:0;border-bottom-right-radius:0;padding-right:2px}.tb-caret{width:14px;padding:0;border:0;border-radius:0 7px 7px 0;background:transparent;color:var(--muted);font-size:10px;cursor:pointer}.tb-caret i svg{width:10px;height:10px;display:block;margin:0 auto 14px}.tb-caret:hover:not(:disabled){background:var(--panel-2);color:var(--text)}.tb-caret:disabled{opacity:.38;cursor:default}.tb-menu{position:fixed;z-index:10;padding:4px;min-width:200px}.tb-menu-item{display:flex;align-items:center;gap:10px;width:100%;padding:6px 8px;border:0;border-radius:6px;background:transparent;text-align:left;cursor:pointer}.tb-menu-item:hover{background:var(--panel-2)}.tb-menu-item svg{width:20px;height:20px}.tb-menu-item span{flex:1}.workspace{display:grid;grid-template-columns:236px 1fr;min-height:0}.browser{background:var(--panel);border-right:1px solid var(--border);overflow-y:auto;padding:10px 12px}.panel-title{font-size:10px;letter-spacing:.07em;text-transform:uppercase;color:var(--faint);margin-bottom:6px}.browser section{padding:8px 0 12px;border-bottom:1px solid var(--border)}.browser section:last-child{border-bottom:0}.browser h3{font-size:12.5px;font-weight:600;margin:0 0 6px}.kv{display:flex;justify-content:space-between;gap:8px;padding:2px 0}.kv span{color:var(--muted)}.kv b{font-weight:500;text-align:right;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.viewport{position:relative;overflow:hidden;background:linear-gradient(var(--vp-top),var(--vp-bottom));touch-action:none}.viewport canvas.gl{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;display:block}.viewport canvas.gl.dragging{cursor:grabbing}.viewport canvas.gl[data-nav-tool=orbit],.viewport canvas.gl[data-nav-tool=pan]{cursor:grab}.empty,.loading,.drop-hint{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;padding:16px}.empty-card{padding:28px 32px;text-align:center;max-width:360px}.empty-card h2{margin:6px 0 4px;font-size:17px}.empty-card p{margin:0 0 12px;color:var(--muted)}.empty-icon svg{width:34px;height:34px;color:var(--accent)}.btn-primary{border:0;border-radius:8px;padding:8px 16px;background:var(--accent);color:#fff;font-weight:550;cursor:pointer}.btn-primary:hover{filter:brightness(1.08)}.loading{background:#0000000f}.loading-card{padding:18px 20px;width:min(340px,100%)}.loading-name{font-weight:600;margin-bottom:10px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.bar{height:6px;border-radius:3px;background:var(--panel-2);overflow:hidden;margin-bottom:8px}.bar-fill{height:100%;width:0;background:var(--accent);transition:width .12s}.drop-hint{pointer-events:none}.drop-hint div{padding:18px 28px;border:2px dashed var(--accent);border-radius:14px;background:var(--accent-soft);color:var(--accent);font-weight:600;font-size:15px}.viewcube{position:absolute;top:8px;right:8px;width:150px;height:150px;-webkit-user-select:none;user-select:none}.viewcube canvas{position:absolute;left:20px;top:20px;width:110px;height:110px;cursor:grab}.vc-btn{position:absolute;width:20px;height:20px;padding:2px;border:0;border-radius:5px;background:transparent;color:var(--muted);display:flex;align-items:center;justify-content:center;cursor:pointer}.vc-btn svg{width:16px;height:16px}.vc-btn:hover{color:var(--accent);background:var(--panel);box-shadow:var(--shadow)}.vc-home{left:6px;top:6px}.vc-up{left:65px;top:0}.vc-down{left:65px;bottom:0}.vc-left{left:0;top:65px}.vc-right{right:0;top:65px}.vc-roll-ccw{right:26px;top:6px}.vc-roll-cw{right:6px;top:6px}.vc-arrow,.vc-roll{display:none}.viewcube.face-on .vc-arrow,.viewcube.face-on .vc-roll{display:flex}.display-panel{position:absolute;left:12px;bottom:12px;padding:8px;width:248px;max-width:calc(100% - 24px)}.seg{display:flex;padding:2px;gap:2px;border-radius:8px;background:var(--panel-2)}.seg button{flex:1;border:0;border-radius:6px;padding:5px 6px;background:transparent;color:var(--muted);font-size:12px;cursor:pointer}.seg button:hover{color:var(--text)}.seg button.on{background:var(--panel);color:var(--text);font-weight:550;box-shadow:0 1px 2px #0000001f}.dp-row{display:flex;align-items:center;gap:10px;padding:8px 4px 0}.dp-row span{width:58px;color:var(--muted);font-size:12px}.dp-row input[type=range]{flex:1;accent-color:var(--accent)}.dp-row select{flex:1;padding:3px 6px;border:1px solid var(--border);border-radius:6px;background:var(--panel)}.dp-toggle{border-top:1px solid var(--border);margin-top:8px;padding-top:8px;cursor:pointer}.dp-toggle input{accent-color:var(--accent);margin:0}.dp-toggle span{width:auto;flex:1;color:var(--text)}kbd{font:10.5px ui-monospace,SF Mono,Menlo,monospace;color:var(--muted);padding:1px 5px;border:1px solid var(--border);border-radius:4px}.navbar{position:absolute;left:50%;bottom:12px;transform:translate(-50%);display:flex;align-items:center;gap:2px;padding:4px}.navbar button{width:32px;height:30px;border:0;border-radius:7px;background:transparent;display:grid;place-items:center;cursor:pointer}.navbar button svg{width:19px;height:19px}.navbar button:hover{background:var(--panel-2)}.navbar button.active{background:var(--accent-soft);color:var(--accent);box-shadow:inset 0 0 0 1.5px var(--accent)}.navbar .sep{width:1px;height:18px;background:var(--border);margin:0 3px}.toast{position:absolute;top:14px;left:50%;transform:translate(-50%);max-width:min(460px,calc(100% - 32px));padding:9px 14px;border-radius:8px;background:#b42318;color:#fff;box-shadow:var(--shadow)}.popover{position:fixed;top:64px;right:10px;width:260px;padding:6px 14px 14px;z-index:10}.popover h4{margin:12px 0 6px;font-size:10px;letter-spacing:.07em;text-transform:uppercase;color:var(--faint)}.check{display:flex;align-items:center;gap:8px;margin-top:8px;font-size:12.5px}.check input{accent-color:var(--accent)}.btn-secondary{border:1px solid var(--border);border-radius:7px;padding:5px 12px;background:var(--panel);cursor:pointer}.btn-secondary:hover:not(:disabled){background:var(--panel-2)}.btn-secondary.on{background:var(--accent-soft);color:var(--accent);border-color:var(--accent)}.btn-primary:disabled,.btn-secondary:disabled,.seg button:disabled{opacity:.45;cursor:default;filter:none}.cmd-panel{position:absolute;top:12px;left:12px;width:272px;max-width:calc(100% - 24px);padding:12px 14px 14px;z-index:2}.cmd-title{font-weight:650;font-size:13.5px;margin-bottom:8px}.cmd-steps{list-style:none;margin:0 0 8px;padding:0}.cmd-steps li{display:flex;align-items:center;gap:8px;padding:3px 0;color:var(--muted)}.cmd-steps li:before{content:"";width:14px;height:14px;flex:none;border-radius:50%;border:1.5px solid var(--faint);box-sizing:border-box}.cmd-steps li.current{color:var(--text);font-weight:550}.cmd-steps li.current:before{border-color:var(--accent);box-shadow:inset 0 0 0 3px var(--panel),inset 0 0 0 7px var(--accent)}.cmd-steps li.done:before{border-color:var(--accent);background:var(--accent) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 14'%3E%3Cpath d='m3.5 7 2.3 2.3L10.5 4.6' fill='none' stroke='white' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/100% no-repeat}.cmd-note{margin:0 0 10px;font-size:12px;color:var(--muted)}.cmd-row{margin-bottom:8px}.cmd-row.seg button{padding:6px}.cmd-row>.btn-secondary{width:100%}.cmd-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:12px}.cmd-actions .btn-primary{padding:6px 18px}.view2d-bar{position:absolute;top:12px;left:50%;transform:translate(-50%);display:flex;align-items:center;gap:8px;padding:5px 6px 5px 12px}.view2d-label{font-weight:650;color:var(--accent)}.view2d-bar .seg button{padding:4px 12px}.marker-layer{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;overflow:hidden}.pick-marker{position:absolute;left:-11px;top:-11px;width:22px;height:22px;border-radius:50%;background:var(--accent);color:#fff;border:2px solid #fff;box-shadow:0 1px 4px #00000059;font-size:11px;font-weight:700;display:grid;place-items:center}.viewport canvas.gl.picking{cursor:crosshair}.viewcube.disabled{opacity:.4;pointer-events:none}.cursor-label{position:fixed;left:0;top:0;padding:2px 7px;border-radius:5px;background:#14181fdb;color:#fff;font:11.5px ui-monospace,SF Mono,Menlo,monospace;white-space:nowrap;pointer-events:none;z-index:5}.ent-row{display:block;width:100%;text-align:left;border:0;background:transparent;padding:4px 6px;margin:0 -6px;border-radius:5px;cursor:pointer;font-size:12.5px}.ent-row:hover{background:var(--panel-2)}.ent-row.sel{background:var(--accent-soft);color:var(--accent)}.ent-row span{color:var(--faint);margin-right:6px;font-variant-numeric:tabular-nums}.snap-overlay{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;pointer-events:none;overflow:hidden}.snap-guide{stroke:#12b886;stroke-width:1.2;stroke-dasharray:5 4}.snap-glyph{fill:none;stroke:#0ca678;stroke-width:2}.snap-glyph.filled{fill:#0ca678}.snap-label{font:600 10.5px -apple-system,Segoe UI,system-ui,sans-serif;fill:#087f5b;paint-order:stroke;stroke:#ffffffe6;stroke-width:3px}.chip-btn{background:transparent;cursor:pointer;font:inherit;font-size:11px}.chip-btn:hover{border-color:var(--accent);color:var(--accent)}.hud{position:fixed;left:0;top:0;z-index:6;display:flex;flex-direction:column;gap:3px;padding:5px;border-radius:7px;background:#14181fe0;box-shadow:var(--shadow)}.hud-row{display:flex;align-items:center;gap:6px;color:#c9ced8;font-size:11px}.hud-row span{width:50px}.hud-row em{font-style:normal;width:18px;color:#8f97a6}.hud-row input{width:72px;padding:2px 5px;border:1px solid #3a4150;border-radius:4px;background:#1c212b;color:#fff;font:11.5px ui-monospace,SF Mono,Menlo,monospace;text-align:right}.hud-row input:focus{outline:none;border-color:#5b96ff}.hud-row input.locked{border-color:#f08c00;color:#ffd8a8}.dim-lines,.dim-layer{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;pointer-events:none;overflow:hidden}.dim-line,.dim-ext{stroke:#3d4a66;stroke-width:1}.dim-ext{stroke-opacity:.6}.dim-arrow{fill:#3d4a66}.dim-label{position:absolute;left:0;top:0;padding:1px 5px;border-radius:4px;background:#ffffffeb;color:#1d2a44;font:600 11.5px ui-monospace,SF Mono,Menlo,monospace;white-space:nowrap;pointer-events:auto;cursor:pointer;-webkit-user-select:none;user-select:none}.dim-label:hover{box-shadow:0 0 0 1.5px #3b82f6}.dim-label.sel{background:#fff4e6;color:#c25e00;box-shadow:0 0 0 1.5px #f08c00}.dim-input{width:70px;border:0;padding:0;background:transparent;font:inherit;color:inherit;outline:none}.statusbar{display:flex;align-items:center;gap:14px;padding:4px 12px;min-height:28px;background:var(--panel);border-top:1px solid var(--border);font-size:12px;white-space:nowrap;overflow:hidden}.statusbar .grow{flex:1}.chip{padding:1px 7px;border:1px solid var(--border);border-radius:10px;font-size:11px;color:var(--muted)}@media (max-width: 1500px){.brand{padding-right:8px}.brand-name{display:none}}@media (max-width: 760px){.workspace{grid-template-columns:1fr}.browser,#nav-hint,.brand{display:none}}