Art style: Мой.
Full-length view, the entire figure visible from head to feet, standing upright and centered — Sergei, a tall lanky teenage boy around sixteen, tenth-grade schoolboy. Warm oval face, fair skin, kind bright hazel eyes with a soft confident smile, light freckles across the nose. Short tidy dark-brown hair, side-swept fringe, no facial hair. Slim broad-shouldered build, slightly awkward friendly posture, one hand tucked in his pocket. He wears a casual school outfit: a light grey knit sweater over a white collared shirt, dark navy slim trousers, and clean white low-top sneakers with laces. A worn canvas backpack strap over one shoulder. He stands in a bright, busy school classroom with rows of wooden desks, a chalkboard and tall windows behind him. Relaxed, hopeful expression. No aura, no glow, no text.
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
FINAL STYLE ENFORCEMENT (this is the authoritative rendering directive — it overrides any style wording elsewhere in the prompt):
Render this image entirely in "Мой" style. Match the lighting grammar, material response, colour science, level of realism / stylisation, line weight, and shading model typical of "Мой". Keep the subject, composition, camera angle, lighting direction, and colour palette from the description above — but EVERY surface, skin, fabric, material, and environmental element must be rendered in the "Мой" idiom, not in any other medium.
