屋顶酒吧的黄昏：城市天际线与暖光

Design a rooftop bar composed entirely for the blue hour. Show a light structure of slim steel and tensioned fabric sheltering the bar, with the outer terrace fully open to sky and framed by frameless glass screens so nothing interrupts the skyline. Detail the horizon as the design's real material: the city's towers rising beyond the parapet with their windows just coming on, the sky graduating from deep blue overhead to warm amber at the horizon. Show the bar itself as a low dark mass in weathering steel with a stone top, deliberately understated so it silhouettes rather than competes. Detail the seating as low and loose — modular sofas in a warm neutral outdoor fabric, fire bowls burning at intervals, and deep planters of grasses moving in the breeze. Show the lighting as very low and warm, entirely at or below table height, so nothing on the roof outshines the city. Include a full crowd turned toward the view. Photorealistic, warm points against blue dusk, eye-level view toward the skyline.