一根普通木棍提示词

{'short': 'One single ordinary brown stick on a neutral background, centered, calm lighting, zero drama.', 'long': 'Render exactly one natural wooden stick. Color ranges from desaturated brown to gray-brown with subtle tonal variation. Bark appears matte, slightly fibrous, with fine linear ridges and minimal flaking. The stick length reads as modest, not staff-like, and clearly not a twig; think palm-to-forearm scale without showing hands. Ends show organic fracture, no saw marks. No adornments. Background is a flat, neutral studio sweep with gentle horizon fade. Lighting is soft, diffuse, and unemotional. Shadows are clean and believable. Composition is centered with comfortable breathing room. The mood is museum-catalog plain. The entire image should feel like an objective record of a stick that exists and nothing else.'}