Duolingo / Learn path (guest)

Reached with Later on the create-profile prompt, still without an account. A fixed left sidebar (Learn, Leaderboards, Quests, Shop, Profile, More) with Learn active in a light-blue pill; a green unit banner (Section 1, Unit 1, Order at a café) with a Guidebook button; a winding path of round lesson nodes (the active one has a progress ring and a START tooltip, the rest are grey, with a chest and a trophy); and a right rail with course, streak, gems and hearts counters, Unlock Leaderboards, Daily Quests and a Create a profile card.