Subject: Flat-style urban building complex, multiple high-rise skyscrapers with varying heights, the tall spired building in the middle is the visual center, buildings mainly feature geometric square shapes, with simple lines and pane textures on surfaces, overall showing a gradient color from orange-red to light yellow, with distinct layers. Scene: Background is a gradient sky from top to bottom, top is light blue, transitioning downward to warm orange-yellow sunrise/sunset tones, bottom is light white ground, overall scene is clean and simple, no redundant elements, creating a warm urban skyline atmosphere. Style: Modern flat vector illustration style, minimalist design, soft color transitions, with slight grain texture, overall clean and fresh, leaning towards a fresh and modern commercial illustration style. Lighting: Adopts unified warm-tone gradient lighting, transitioning from orange-red at the bottom to light yellow at the top of buildings, background sky also shows a blue-to-orange gradient, no strong light-dark contrast, overall lighting is soft and warm, creating a sunrise/sunset atmosphere. Composition: Centrally symmetric skyline composition, building complex is located in the lower-middle part of the frame, the middle spired building is the visual focus, leaving blank space for the gradient sky above, leaving light white ground space below, overall画面平衡稳定，上下留白充足，适合作为背景或 banner 使用。 Usage: Can be used for APP splash screen backgrounds, city-themed posters, commercial illustration materials, UI interface backgrounds, holiday/city-related promotional designs, also can be used as a fresh minimalist PPT background, web banner elements.