Art style: Realistic cinematic nature documentary.
A pristine mountain river surges over a bed of smooth, grey boulders and moss-covered rocks. In the background, a massive, triangular peak blanketed in brilliant white snow pierces a deep blue sky. Framing the scene are lush, dark green pine trees that hang over the water. The sunlight is bright and clear, casting sharp shadows and highlighting the sparkling white foam of the rapids. The mood is serene and majestic.
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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 "Realistic cinematic nature documentary" style. Match the lighting grammar, material response, colour science, level of realism / stylisation, line weight, and shading model typical of "Realistic cinematic nature documentary". 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 "Realistic cinematic nature documentary" idiom, not in any other medium.
