Adds the @media (max-width: 480px) blocks specified in the design:
- dashboard.css: indicator table hides the 'mobile-hide'-tagged
columns (Label, Ccy, 1y, anchor, as-of), keeping Symbol / Price /
1d / 1m. Cell padding + font shrink. Group-tab buttons get a
bigger touch target.
- panels.css: header padding tightens, scroll-body max-height drops
to 60vh so log/news stay above the fold in the stacked layout.
- portfolio.css: overall grid keeps 2 cols (already at 640px) with
tighter gap; action buttons wrap; composer input goes full-width.
- log-chat.css: chat bubbles edge-to-edge, input row stacks, font-
size:14px on form fields to avoid iOS Safari zoom-on-focus.
- news.css: row collapses to age | (title / source) — source moves
under the title. Tag filter strip wraps.
- settings.css: form rows stack (label above input). Import picker
becomes single-column. Buttons full-width.
- auth.css: card padding tightens to free up vertical space when the
iOS keyboard is up. font-size:14px on inputs.
- public.css: hero headline clamp() lower bound drops to 22px; CTAs
stack full-width; pricing tier-grid stacks.
indicators.html: tagged the secondary cells with .mobile-hide rather
than relying on positional nth-child — the anchor column is
conditional and would have shifted positions.
336 tests still pass.
Splits the 2571-line cassandra.css into ten focused stylesheets:
tokens (palette + fonts), layout (chrome), panels, dashboard,
portfolio, log-chat, auth, settings, news, public. base.html and
public_base.html load only what they need; auth pages (login,
verify, unsubscribe confirm) load tokens + layout + auth.
Brand drift-detection test repointed at tokens.css (where the
palette now lives). 291 tests still pass.
