未完成感：刻意留下的粗糙区域

Create an architectural visualisation that deliberately leaves parts of itself unresolved, a device used to keep an image feeling like a sketch of an idea. Show the building and its immediate surroundings rendered with full fidelity, then let the image dissolve toward its edges — the far context reducing to flat tonal shapes, then to a simple line, then to bare white paper at the frame's margin. Detail the transition as gradual and asymmetric rather than a neat vignette, resolving further on one side than the other. Show one or two elements deliberately left as line drawing within an otherwise rendered area — a distant tree drawn in outline only, a background building shown as a flat grey silhouette. Detail the sky as a partly painted wash that does not reach the frame's corners, leaving white paper visible. Keep the focal area of the image completely resolved so the incompleteness reads as a choice rather than an omission. Mixed rendered and unrendered, sketch-like at the edges, wide view.