Fast checklist before you ship a refresh:
- Logo system: primary, stacked, favicon; test at 16px and 200px.
- Color: 1–2 brand anchors, 1 accent, semantic states (success/warn/error), light/dark accessible pairs.
- Type: heading/paragraph/mono with weights locked; set link + button defaults.
- UI kit: buttons, form fields, cards, nav, modal; add spacing tokens (4/8/12/16/24).
- Imagery: photo style or illustration rules; add 3 hero crops that actually fit your layouts.
- Docs: 1-page usage cheatsheet; export favicon + app icons + social share image.
Run a final contrast audit and export an asset pack with names and sizes consistent.