Profile / Avatar - Realistic Long-Haired Cat Portrait

Create a highly realistic studio portrait of a long-haired {argument name="animal subject" default="domestic cat"} facing forward in a tight head-and-chest crop, centered in the frame and looking directly at the viewer with a calm, slightly serious expression. The cat has {argument name="fur color and pattern" default="dark charcoal gray and white bicolor fur"}, with a white muzzle, white blaze running up the center of the forehead, fluffy white chest, darker gray cheeks and crown, and long layered fur with visible individual strands. Emphasize large upright triangular ears with pink inner ears and fine ear tufts, bright {argument name="eye color" default="golden amber"} eyes with sharp vertical pupils, a small soft pink nose, and long white whiskers extending outward on both sides. Use photorealistic animal photography style, extremely detailed fur texture, natural soft studio lighting, shallow depth of field, crisp focus on the face and eyes, subtle catchlights, and a smooth dark {argument name="background color" default="deep green"} backdrop with gentle vignette. Vertical portrait composition, square-to-near-portrait crop, no accessories, no text, no watermark, no human elements.