Lighten hero scrim so the mesh grid reads through

Details

The hero text scrim sat at ~0.92/0.82 alpha behind the copy, which read as
a near-flat panel and hid the animated mesh grid right where the headline
and paragraph are. Lower the scrim alpha in both themes (dark 0.48/0.36,
light 0.56/0.44 at the dense stops, feathering to ~0.06 at the right edge)
so the grid is clearly visible *through* the panel while the text stays
comfortably readable over the seasonal weather.
Light keeps marginally more cover than dark since its worst-case background
(a bright/warm sky) is brighter. Validated across weather on/off, all four
seasons, dark/light, and desktop/mobile. The scrim is a plain gradient (no
backdrop-filter), so the no-backdrop-filter fallback path is unaffected.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Siw4HBDfxn2sBiDFBpNkPN

Files changed (1)