A polished, photorealistic vertical portrait of a young man

A polished, photorealistic vertical portrait of a young man sitting casually on marble steps in front of modern glass office buildings, three-quarter full body composition, centered frame. He wears a brown and cream quarter-zip pullover, light gray slim trousers, black low-top sneakers and a black wristwatch. Pose relaxed with one elbow resting on knee, other hand in pocket, slight confident smile, well-groomed short dark hair and neatly trimmed beard. Soft natural daylight, gentle overcast sky for even skin tones, cinematic shallow depth of field with creamy bokeh of blue glass facades in background. High-resolution detail on fabric texture, watch face, shoe stitching and hair strands, sharp, catchlights in eyes, warm skin tones contrasted against cool urban blues, subtle filmic color grading, balanced contrast and natural skin retouching. Low-angle perspective, leading lines from steps, subtle vignette, realistic shadows and reflections on glass, ultra-detailed, professional editorial look. Camera style: 85mm, wide aperture, low ISO, crisp focus on subject. Insert discreet watermark in the lower right corner of the image, vertical text (rotated 90°), written "aipromptlabs.online", Calibri Light font, white color with low opacity (semi-transparent), medium size. Extreme sharpness on the face, fabric texture and typography of the letters. Shot on Canon EOS R5, 50mm f/2.8, studio light.