Dark Cinematic Portrait with Rembrandt Lighting

Extreme closeup cinematic portrait of an American white man with sharp jawline and defined facial features, shot in a pure pitch-black professional photography studio, single large octabox softbox positioned at 45-degree Rembrandt angle casting one razor-sharp highlight across cheekbone and nose bridge, opposite side dissolving into absolute darkness, skin texture hyper-detailed - every pore, stubble hair, and under-eye detail rendered in surgical realism, eyes locked directly into camera lens with cold intense expression, subtle rim light from behind separating subject from black void background, wearing a crisp black turtleneck disappearing into shadow, shallow depth of field with ears and background falling into perfect bokeh, color grade pulled deep teal-black in shadows with warm amber skin tones in highlights creating split complementary tension, a faint "@OzairAI" watermark subtly embedded as a barely visible reflection on the studio floor below frame, vertical 9:13 format. Ultra photorealistic, 8K, no text overlays, cinematic color grading.