Hand Pinching One-Yuan Coin

Photorealistic square 1:1 close-up image of {argument name="hand description" default="an adult right hand"} pinching {argument name="coin description" default="a Chinese one-yuan coin"} between the thumb and index finger, with all five fingers anatomically correct and no extra fingers. The coin is held near the left-center of the frame, facing the camera, with realistic silver metal texture, ridged edge highlights, engraved floral motif, and the visible text {argument name="coin text" default="1 元"} clear and legible. The index finger curves above the coin and the thumb supports it from below; other fingers are naturally curled into the palm. Background is a softly blurred office desk with a black keyboard in the lower left, a computer monitor edge on the far left, pale wooden desktop, a green potted plant behind the hand, and dark office items on the right. Use shallow depth of field, natural indoor lighting, realistic skin pores, fingernails, creases, and soft shadows. Keep the composition candid and smartphone-photography-like, with the hand and coin sharply focused and the background bokeh blurred. Constraints: exactly one hand, exactly five fingers, exactly one coin, no distorted anatomy, no duplicate fingers, no watermark.