Inpaint/Modify ONLY the man's left hand and wrist. A detailed, anatomically correct, photorealistic mature male hand with realistic skin texture, natural fingernails, and five distinct fingers. The hand is naturally outstretched from the sleeve, and the index finger is firmly pressing the top button of the mechanical chess clock. STRICTLY PRESERVE everything else from the reference image: the man's posture, the black suit, the luxury metallic chessboard with chrome pieces, the exact model of the digital chess clock, the dark marble table, the office interior, and the massive window showing a city skyline at sunset. NO changes to composition, lighting, style, background, or colors. Keep everything identical except for the flawlessly rendered human hand. Photorealistic 4k resolution.
