:root{--bg: #f6f7f9;--panel: #ffffff;--panel-2: #f1f3f6;--border: #dde1e7;--text: #1c2129;--muted: #667085;--accent: #2563eb;--accent-text: #ffffff;--danger: #dc2626;--warn: #b45309;--floor: #ffffff;--path: rgba(234, 179, 8, .35);--grid-major: #c5cbd4;--grid-minor: #e7eaee;--block-stroke: rgba(15, 23, 42, .55);--selected: #f59e0b;--route: #ef4444;color-scheme:light}@media (prefers-color-scheme: dark){:root{--bg: #111317;--panel: #181b20;--panel-2: #20242b;--border: #2c313a;--text: #e6e8ec;--muted: #9099a6;--accent: #3b82f6;--floor: #1a1d22;--path: rgba(234, 179, 8, .28);--grid-major: #3a404a;--grid-minor: #24282f;--block-stroke: rgba(0, 0, 0, .6);color-scheme:dark}}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text);font:13px/1.4 system-ui,-apple-system,Segoe 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