UPDATE — CSS rebuild + progression system. Review sent it back saying my CSS looked too AI-made, so I rebuilt the styling myself and actually learned how it works — set up a color palette with variables and re-themed the whole game in one line to prove it. While I was in there I added a progression system: tokens you earn each run and keep between games, side quests for bonus tokens, a cosmetics shop (colors and orbiting shapes, no pay-to-win), and an end-of-run plinko round that multiplies your run tokens (minimum 1x, so you can never lose them), plus arrow-key/WASD movement and a pause button. Biggest headache was the plinko ball not landing in a slot — the physics were using the display size instead of the canvas’s real size — fixed once I matched them.