5-tier LOD by camera height
The terrain auto-switches based on your altitude, not distance:
Surface (<350 m, 1.5 m/px + 500× hillshade),
Parcel (350–1500 m, 1.5 m/px),
Escobar (1500–6000 m, 15 m/px),
Regional (>6000 m, 60 m/px).
Vertical exaggeration ramps 220× → 450× as you descend into Surface.