Photoreal CGI Glass Sphere Eye with GROK Micro-Letters

Photoreal CGI macro. Clear glass sphere on black; inside: one human eye facing camera, iris teal. In the pupil centre, tiny luminous uppercase 'GROK' as caustic micro-letters only - strictly inside the pupil, not touching the iris; width ≤6% of pupil diameter, thin weight, high contrast. Soft overhead key, subtle back rim, slight internal haze, clean speculars, centred framing. Negative prompt: large/overlay text, letters on iris or sphere, letters >6% pupil diameter, text outside pupil, decals, duplicates, extra eyes, exaggerated veins, fingerprints, chromatic aberration, heavy bloom, blur, logos, watermark. Width: 1080, Height: 1920, Style preset: Photographic.