:root{--bg:#eaeef2;--panel:#ffffff;--line:#d3dae2;--fg:#15202b;--muted:#5a6878;--accent:#e09a12;--accent-ink:#8a5800;--accent-soft:#fdf1d8;--canvas:#fbfcfd;--grid:#e8edf2;--grid-major:#cdd6df;--wall:#24303c;--wall3d:#e9ecef;--floor3d:#d8dee5;--sel:#0b78e3;--warn:#c2410c;--ok:#15803d;--f-body:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif;--f-head:"IBM Plex Sans Condensed","IBM Plex Sans",system-ui,sans-serif;--f-mono:"IBM Plex 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