Plan step 16. `navigation.js` takes its standard-rail threshold from
`from('expanded')` (840px) instead of the 64rem it had, and `navigation.css`'s
three 64rem queries follow, so the whole expanded class gets the in-layout
collapsible rail M3 asks for rather than one that opens over a scrim (N-06);
its two 40rem queries become 37.5rem, the compact/medium boundary the bar's own
container query already used (N-07). `search.js` and `datepicker.js` swap their
39.99rem media strings for `upTo('medium')`, so the full-screen search view and
the modal date picker end at 600px, not 640px.
The time picker's landscape layout stops keying on width at all: M3 swaps it on
orientation and viewport height, so it is now landscape plus a window too short
for the upright dial (35rem, the dialog's own height), and the two dial-shrink
rules key on height alone.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Qwx5USif3wFFmxtHg5U1g9
