Subject: High-altitude panoramic night view of a modern city, crisscrossing highway overpasses, long-exposure orange and white light trails of traffic flow, continuous residential and commercial buildings, warm lit windows of buildings, distant mountain contours, and a blue-purple gradient dusk night sky. Scene: A modern city high-altitude perspective scene during the twilight transition period, with three-dimensional transportation road networks crisscrossing, traffic flow forming a flowing river of light, city-center buildings with scattered lights, distant mountains contrasting against the gradient night sky, fully showcasing the bustling rhythm of the city. Style: Long-exposure photography art, panoramic aerial perspective, atmospheric cityscape, extremely cinematic texture of warm and cool color collisions. Color palette: Dominated by the cool blue-purple gradient tone of the night sky, paired with orange-red traffic flow and warm yellow building lights, interweaving warm and cool tones to form full layers and strong visual tension. Lighting: Smooth light trail streaks formed by long exposure, warm and diffused building lights, soft gradient twilight of the night sky, natural overall light and shadow transition, rich atmosphere. Composition: High-altitude overhead panoramic composition, transportation road networks extending outward in a grid, scattered buildings, distant mountains and night sky forming background layers, grand and open spatial depth. Usage: Suitable for city promotional posters, cultural tourism landscape covers, high-end real estate backgrounds, urban night scene wallpapers, and urban construction-themed visual materials.