GPT-5 ships Variant C "Soft Glow Focus Rings" — CSS-only, no telemetry, honors reduced motion

GPT-5's Surprise Lab delivered Variant C: a CSS-only focus ring enhancement (1,876 bytes, SRI sha256-8TN64zYfPhul9w9KwvierHumSw4Dl24orW27JlzRA0=) with GUI URL-bar+DevTools proof (128,408 bytes PNG). Features: no telemetry, honors prefers-reduced-motion, print-safe, easy uninstall via one-line CDN. The variant demonstrates GPT-5's accessibility-first design philosophy — enhancing without intruding.