Corner radius

radius-sm 6px

radius-md 12px

radius-lg 20px

radius-pill 999px

Borders

Hairline

1px border — cards, dividers

Control

1.5px border-strong — inputs, chips

Placeholder

1px dashed — "coming soon", draft copy

Shadow · almost none

shadow-none

Every card. Paper is flat.

shadow-sheet

Only the mobile menu and sticky bar — things that float.