Ultra-realistic 8K full-body portrait (4:5) of a stylish young man leaning on a stone railing by a calm lake, one leg crossed, one hand on railing, other in pocket, body slightly angled, looking sideways with a confident relaxed expression. Wearing light brown linen shirt (open collar), white slim-fit trousers, beige loafers, black sunglasses, wristwatch. Soft natural daylight, blurred green hills and water, shallow depth of field, cinematic color grading. Use reference image.