Comprehensive mobile pass over every page, form, layout and shared
component: eliminate horizontal overflow, switch fixed-vh sections to
auto height, collapse multi-column grids to single column, scale down
display typography and padding, enforce 44px tap targets, and ensure
embedded gold forms render and scroll without clipping on small screens.
All changes gated behind isMobile; desktop layout unchanged.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
