Hero animation: a 3D airliner enters from the lower-left climbing,
crosses the viewport at near-1:1 scale around 50% of the timeline,
then exits top-right and shrinks. CTA stays hidden during the flyby
and fades in once the plane has cleared the frame; the gold pulse
halo is delayed to start with the reveal.
The plane asset is microsoft/fluentui-emoji's Airplane/3D, MIT.
Total intro is ~3.9s before the CTA is interactable; reduced-motion
short-circuits the whole sequence and shows the button immediately.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
