A dramatic, high-contrast studio portrait of a {argument name="subject gender" default="male"} athlete or model in the visual style of a premium sports drink advertisement, centered and facing straight toward the camera in a tight head-and-shoulders crop. The subject has {argument name="hair style" default="short dark hair brushed back"}, visible ears on both sides, and a rugged lower face with a short beard or stubble. Dress him in a dark zip-up athletic jacket with the zipper centered and visible near the collar. Use an almost entirely black background and extremely low-key lighting, with su