Scroll to scrubTwo pinned sections with ordinary scrolling between them. Each holds while its demo plays, then releases. Scroll back up — progress runs backwards because it is derived from position, never accumulated.

importp 1.000

The campaign runs

step 3 · run168 / 168 sent

Normal scroll between the demos — the page is never one continuous pin.

callp 1.000

The sale writes itself from the call

step 3 · capturedon call · p-cs3

Released. Reduced motion, or a viewport under 900, renders the end state without pinning at all.