Build me a motion graphic. Stick to this brief line by line:

## Quality bar
Make it look like [an Apple keynote]: every frame a UI moment from [a product launch page], [tactile, physical, polished, premium].

## Format
Canvas [1080 x 1350]. Length [6 seconds]. A seamless loop: the final frame equals the first.

## One rule
ONE hero object fills [60-70%] of the frame, makes ONE satisfying change, then resets smoothly.

## Look
Real depth: soft layered shadows, frosted glass with a bright 1px edge. [System colours], one or two per piece: blue #0A84FF, green #30D158.

## Motion
Springs on everything that moves: real mass and a small settle. Hold each end state [1.2 seconds] so it reads.

## Never
No grey placeholder bars, stock icons, emoji or clip art. No dark, noisy or full-frame gradient backgrounds.

## Self-check
Screenshot a frame every second. Review each one as [a senior Apple designer], then again at 200px wide.

## Scene
[A big glossy "Publish" button. A cursor clicks it, it squashes into a circle, a blue ring fills, it snaps to a green tick with a ripple and widens to read "Published".]
