Butterfly Over Neon Subterranean City

An exquisitely detailed digital art scene of a luminous butterfly with iridescent, stained-glass wings perched on a rusted railing in a vast underground city. The subterranean metropolis glows with neon lights, bioluminescent fungi, and holographic signage, reflecting off damp stone arches and glassy tunnels. Futuristic towers rise between ancient caverns, suspended walkways, and crystal-lit canals. The style is high-definition digital concept art with a cyberpunk aesthetic, cinematic lighting, and a shallow depth of field focusing on the butterfly, while the city blurs into a bokeh of electric blues, pinks, and greens. Slight motion blur on the wings to convey movement, with textures of stone, metal, and wing membranes, and a subtle vignette framing.