Style: Art Deco / Utopian Metropolis A grand and elegant Art Deco / Utopian Metropolis illustration, utilizing strong, clean lines, polished metallic surfaces, and a rich palette of deep blues, silver, and gold. The foreground focuses on a magnificent city on the ringworld, characterized by soaring, stepped buildings, gleaming with polished chrome and intelligent, geometric lighting. Elegant airships and personal craft glide between the towers, hinting at advanced, harmonious living. The city's structure emphasizes symmetrical design and aspirational progress. Beyond it, the graceful curve of the ringworld extends into the distance, showcasing more utopian settlements and vast green spaces, all meticulously designed. In the far distance, the central star glows with a soft, steady brilliance, and the cosmic background is a serene, almost idealized deep-space vista, featuring a distant, perfectly formed gas giant with elegant rings, set against a velvet-black sky sprinkled with gleaming stars, embodying a pinnacle of civilization.