:root{--bg:#f4f6f9;--panel:#fff;--line:#e3e7ee;--line-strong:#cfd6e1;--ink:#1f2430;--ink-2:#4b5466;--muted:#8790a2;--accent:#1d4ed8;--accent-soft:#e8efff;--sel:#ffb000;--danger:#c62828;--radius:8px;color:var(--ink);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:14px}*{box-sizing:border-box}html,body,#root{background:var(--bg);height:100%;margin:0}button,input,select,textarea{font:inherit;color:inherit}button{cursor:pointer}button:disabled{opacity:.45;cursor:default}.muted{color:var(--muted)}.small{font-size:12px}.spacer{flex:1}.dot{border-radius:50%;flex:none;width:10px;height:10px;display:inline-block}.sq{border-radius:3px;flex:none;width:11px;height:11px;display:inline-block}.glyph{font-variant-emoji:text;font-family:Segoe UI Symbol,DejaVu Sans,"Noto Sans Symbols 2",serif}.app{grid-template:"top top top"54px"left stage right"1fr"status status status"30px/290px 1fr 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button.on{background:var(--accent);color:#fff}.stage>.layer{position:absolute;inset:0}.stage>.layer.hidden{visibility:hidden;pointer-events:none}.scene3d-wrap{width:100%;height:100%;position:relative}.labels3d{pointer-events:none;position:absolute;inset:0;overflow:hidden}.lbl-anchor{pointer-events:auto;will-change:transform;position:absolute;top:0;left:0}.lbl-anchor.passive{pointer-events:none}.toolbar{z-index:20;position:relative}.stage{isolation:isolate}.labels3d{z-index:1}.tool-hint{z-index:5}.menu-pop button.checked{background:var(--accent-soft)}.menu-pop .check{width:14px;color:var(--accent);flex:none;align-self:flex-start}.lbl-anchor{transition:opacity .15s}.navpad{z-index:5;border:1px solid var(--line-strong);background:#ffffffeb;border-radius:12px;gap:6px;padding:8px;display:flex;position:absolute;bottom:14px;right:14px;box-shadow:0 6px 18px #141e3224}.pad-grid{grid-template-rows:repeat(3,32px);grid-template-columns:repeat(3,32px);gap:3px;display:grid}.pad-col{border-left:1px 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