Art style: 3D Pixar.
A distinguished elderly Caucasian man in his late 60s with an oval face and fair, weathered skin. He has short, wavy salt-and-pepper hair and thick, bushy grey eyebrows. His eyes are a piercing yet kind light blue. A prominent, well-groomed grey mustache is a key feature. He wears a professional white doctor's lab coat over a dark blue scrub top. His expression is calm and reassuring, with a hint of a gentle smile. He is captured in a head-and-shoulders portrait, looking forward with a dignified and knowledgeable presence.
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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 in the following art style:
Pixar-style 3D computer animation (Pixar / Disney feature-film look) — fully volumetric 3D rendering with rounded dimensional forms, soft subsurface-scattering skin, physically based materials, soft global illumination, warm cinematic key light, gentle depth of field, vibrant family-friendly colours. CRITICAL: EVERY element — characters, foliage, trees, animals, water, sky, props and the entire environment — must be rendered as polished 3D CGI with real depth and form. This is NOT flat 2D illustration, NOT a watercolour or storybook painting, NOT cel-shaded anime.
Every surface, skin, fabric, material, and environmental element must be rendered in this idiom.
