Confident Young Adult Man in Studio Portrait

professional studio portrait of a smiling young adult man with short brown hair, neatly trimmed full beard and mustache, round thin metal eyeglasses, wearing a fitted black ribbed turtleneck sweater, upper torso framing, facing camera with relaxed shoulders, friendly confident expression, centered slightly to the right, shallow depth of field, crisp facial detail, soft skin texture, subtle sweater knit texture, modern corporate headshot aesthetic, smooth gradient studio background transitioning from vivid cyan blue on the left to muted violet purple on the right, soft key light from front right, cool blue rim light from left, gentle shadows on one side of the face, clean minimal background, realistic photography, high-end portrait lighting, 85mm lens look, f/2.8, natural proportions, sharp eyes, polished but authentic