iOS Safari ignores user-scalable=no, so zoom is blocked in three layers:
- viewport meta: maximum-scale=1, user-scalable=no on every page
(covers Android, home-screen apps and iOS focus zoom on inputs)
- CSS: touch-action: pan-x pan-y on html, so scrolling still works but
pinch and double-tap zoom do not
- JS (fluid.js): cancel Safari's gesture* events and two-finger touchmove
Double-tap is left to CSS rather than JS so rapid repeated taps on
buttons still register as clicks.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>