The onboarding does not describe features, it teaches the loop: collect the plastic at home, find the nearest centre on the map, show your QR at the counter, watch the points turn into prizes. One idea per screen, one illustration each, a progress bar that shows the end is close. The mascot — a smiling globe — carries the tone so the app never sounds like a public-sector campaign, and the green is used to mean progress: the button you press, the points you earn, the pin on the map.