Reference: apple

Source: https://developer.apple.com/design/human-interface-guidelines/scroll-views

Observation

Apple guidance asks custom interfaces to support standard scrolling gestures and keyboard shortcuts.

Application

Borrow: preserve native scroll control and keyboard access; do not infer private Apple Pay timing from generic guidance.

Evidence limits

No product page was recorded and Apple Pay timing was not measured.

No third-party code, images or footage was incorporated. A 1440×900 scroll recording and step screenshots were not collected for this reference; numerical timeline parameters are intentionally not inferred.