Neon Storm over the Underground Cybercity

An expansive subterranean metropolis carved into a vast cavern during a raging cyberpunk storm. Neon-lit towers rise from slick, rain-soaked rock while rain pounds through cracks in the ceiling. Holographic advertisements flicker between rusted steel arches, casting electric blues and hot pinks over the streets below. Narrow canals reflect neon signs; hovercars glide along transparent walkways above a river of neon-green mist. Steam vents hiss, cables drape overhead, and rain-slick surfaces create sharp reflections. Cybernetically augmented pedestrians move through the rain as drones buzz through the shadows. The scene is moody, high-contrast cyberpunk noir with synthwave color grading, wet textures, and a sense of impending electric storm.