Art style: Dark Gothic Fantasy.
Marcus Aurelius, a Roman Emperor in his late 50s, featuring a thick, curly grey beard and a weathered, thoughtful face. His eyes are calm and filled with a weary wisdom. He is draped in a heavy wool toga with a purple border and wears a simple iron signet ring. He is shown in a stoic, minimalist setting, perhaps an imperial tent or a marble hall. His expression is one of profound inner peace and heavy duty. The lighting is soft and natural, emphasizing his dignified and philosophical nature against a backdrop of stone.
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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 "Dark Gothic Fantasy" style. Match the lighting grammar, material response, colour science, level of realism / stylisation, line weight, and shading model typical of "Dark Gothic Fantasy". 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 "Dark Gothic Fantasy" idiom, not in any other medium.
