A sleek cityscape of towering skyscrapers with luminous facades and interconnected sky bridges, under a twilight sky in hues of deep blue and silver. Gleaming autonomous vehicles glide silently along elevated tracks, while pedestrians move through tree-lined walkways illuminated by soft, ambient light. In the sky above, a streamlined spaceship with smooth curves and a reflective surface glides effortlessly, leaving a faint trail of gentle luminescence. The entire scene is rendered in a minimalist style with clean lines and geometric shapes, utilizing a limited palette of blues, silvers, and soft whites to evoke a sense of futuristic tranquility and innovation.