Site: hero backdrop lit by the prism, scene clears the helper text

Background: the dotted starfield is gone. Five CSS layers light the room from the scene: a cool halo behind the prism, a spectral bleed where the rays land, a warm glow behind the failure chips (amber in audit mode), and a hairline floor lattice under the prism. The canvas adds a soft haze along the beam, drawn once per layout at 1/12 scale. Motion is transform and opacity only, pauses off screen and on pause, and stops under reduced motion. Layers move by translate, so anchoring them adds no layout shift.

Spacing: the prism apex sits 60 to 76 px under the helper text at desktop (was 30 to 36), and the base keeps 39 to 50 px above the horizon curve. Chip lanes keep one chip height plus 12 px apart and drop a chip when the band is short, so chips no longer overlap at 1366, 1280 and 1024. Labels end above the prism base. The last two labels now reach full opacity (Session recorded was capped at 60%).