Art style: 3D Pixar animation.
Крупный план рук сына, который старательно пишет карандашом в тетради 'Математика'. Видны только тетрадь, карандаш и часть рукава. Освещение яркое, дневное.
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FINAL STYLE ENFORCEMENT (this is the authoritative rendering directive — it overrides any style wording elsewhere in the prompt):
Render this image entirely in "3D Pixar animation" style. Match the lighting grammar, material response, colour science, level of realism / stylisation, line weight, and shading model typical of "3D Pixar animation". 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 "3D Pixar animation" idiom, not in any other medium.
