[lovasoa]

The landing sculpture used saturated cyan bands, a translucent backdrop that painted a gray column over the light section, and a floor whose weak shading gave the database little sense of contact.

Build a visible textured studio floor with surface relief, contact occlusion, and a reflection of the actual rotating sculpture. A 512 × 512 planar reflection is Gaussian-filtered to 256 × 256 in linear light, using the shared blur shader. Use one dark satin gunmetal finish for the lid, shell, and rims: the same base color, metalness, roughness, environment intensity, and machining strength. Lower key/softbox intensity and environment response so rotating the sculpture produces shaded gray-blue highlights without broad near-white patches. Reposition the white key and blue area lights to light the ground, and remove the artificial point-light hotspot from the lid. Keep the opening controls and SQL ribbon above the ground plane.

The desktop opening has a compact, left-aligned headline and room around the sculpture and its floor. Colors and surface treatments stay in the existing scene/CSS modules, with the studio palette scoped to the landing page. The documented rendering script regenerates the static preview and 64-view atlas from the production renderer.

Remove loading brightness jumps in both transitions: keep the preview visible until the reflection pass is initialized, and retain the live canvas while the low-power atlas downloads and decodes. Draw the replacement before attaching it. The phone regression deliberately delays the atlas and verifies that the live frame stays visible. Pose/input checks poll real GPU completion while suppressing the software-GPU fallback threshold, so controlled animation frames cannot overrun the renderer. Touch checks accept the scrolling instructions for both live and low-power views.

Validation:

• npm test: formatting/lint, TypeScript, and all 85 unit tests pass; existing CSS lint warnings remain.
• npm run build, git diff --check, cargo fmt --all -- --check, and cargo clippy --all-targets --all-features -- -D warnings pass.
• All 145 Playwright tests pass, including scrolling, touch, keyboard/mouse rotation, reduced motion, loading recovery, and the delayed-atlas handoff. Both previously failing scenarios also pass with the browser restricted to one CPU core.
• Captured and inspected desktop, tablet, phone, and light-section screenshots, four rotation angles in close-up, the first visible live frames, and both renderer handoffs. Regenerated both fallback assets from the fully initialized scene.