Tokens, type, components and the in-app UI kit. Use these as the source of truth when updating the mobile app — the marketing site you're hosting is built on the same foundation.
Six interactive screen mocks — Course progress, Words to learn, Speak lesson, Reward, Paywall, Profile — each rendered inside an iOS device frame so you can directly compare them to the real app.
Open the click-thru →README.md — the full written guide
Voice, content rules, spacing scale, hover/press behaviour, iconography choices and what's flagged for review.