Photorealistic Portrait with Facial Reference

Use the uploaded image as the only facial reference and preserve 100% facial identity, hairstyle, beard, skin tone, and natural skin texture. A highly detailed, photorealistic portrait of a handsome young man sitting casually on outdoor concrete steps. He has dark, voluminous hair and is running his right hand through it. He has a neatly trimmed short beard and mustache, and is looking directly at the camera with a relaxed expression. He is wearing a plain, loose-fitting cream crewneck sweatshirt, slim-fit grey jeans with rips at the knees, and crisp white sneakers. He has a black metal wristwatch on his left wrist and is holding a pair of black aviator sunglasses in his left hand, which rests near his knee. The background features a shallow depth of field with soft bokeh, showing vibrant pink bougainvillea flowers to the left and a blurred building facade behind him. Soft, natural daylight, professional photography style, 8k resolution. Ratio 9:16. Keep original face and hairstyle 100% reference.