Keep the EXACT same man and face as in the reference (same identity, ordinary real Russian man, 50 — colleague Sergey). Character type: a hearty P.E. TEACHER / school handyman ('трудовик/физрук') dressed up for a birthday — a jacket worn over a shirt with a small lapel pin or badge, maybe a hint of a sporty tracksuit collar under the jacket, a neat moustache, tidy hair, a big cheerful good-humoured smile, sturdy build. The type reads through the sporty-but-dressed-up mix and his hearty 'свой мужик' vibe — festive, warm, not a caricature. Pleasant soft warm natural light, gentle natural colours, clean soft neutral background, no text. Photoreal, head and shoulders, 50mm lens, shallow depth of field, high detail.
