This has got to be most creative take on the theme I've seen yet. A really cool idea to have each platforming puzzle outlined by the numbers in a count down, and it's really well executed and got a lot of mileage out of a simple but creative mechanic. The exact logic of phasing through the platforms wasn't super clear to me at first (like how you can actually fall through several layers if they're close enough) but it was satisfying to figure out.
Well done!