8px grid

4 is for icon–text nudges only. Page gutters 48 / 32 / 16 (desktop / tablet / mobile), container 1280.

The seam: module-gap 8px

Modules in the configurator plan, social grid tiles and super-symbol graphics keep a fixed 8px seam. It does not scale with the tile.

Zero radius, borders not shadows

1px border-1, square corners
Do
Rounded card with a shadow
Don't