Macro close-up of a single roasted coffee bean resting on a long, straight brass conveyor belt in a steampunk setting. The belt shows a worn golden-copper patina with visible rust specks, riveted segments, and small gears along the sides. The bean is centered, highly detailed and glossy, with a tiny crack along its seam. The belt recedes into the distance as a strong leading line, with an ultra shallow depth of field that keeps the bean in sharp focus while the foreground and background are softly blurred. Warm, directional lighting highlights the metallic textures and the rich surface of the bean against a neutral soft gray background.