Satellite POI legibility

This uses the live mobile-satellite style and its actual sprite atlas. “Halo test” proves why an SDF-only halo cannot rescue regular @2x image sprites. Use the map controls to inspect the result through z23.

Location

Sprite rendering Current @2x sprite atlas SDF sprite atlas + white halo

Regular-sprite treatment Existing sprite Halo test (expected ineffective) Light circular backing Light backing + soft shadow

SDF halo + POI labels Halo width 2.0 px Invert POI labels (warm white + deep ink halo) Other map labels stay unchanged.

Backing tuning Diameter 18 px Lightness 76%

Existing imagery style: black sprite detail can disappear over dark or textured ground.