flat vector illustration, flat anime, cel shading, outline, Neo-noir digital illustration of a stylized city nestled in a valley surrounded by towering, jagged mountains, all rendered in a high-contrast palette of neon magenta, hot pink, and stark black against a pitch-black sky. The composition is dominated by a layered landscape of mountains receding into the distance, their sharp peaks and ridges outlined in thick black ink against the vibrant pink fill. The highest peaks frame the upper corners, while smaller, repetitive mountain ranges create a rhythmic pattern leading down to the urban sprawl. A winding, cracked road or riverbed cuts through the immediate foreground, flanked by stylized, brush-stroke trees with bright pink foliage and dark trunks. At the center of the valley lies a dense cluster of skyscrapers and buildings. These structures are depicted with a mix of solid pink blocks and windows filled with tiny dots of cyan, white, and purple, creating a sense of depth and activity. The architecture is blocky and geometric, fitting the graphic aesthetic. The lighting is dramatic and artificial, emanating from within the city lights and the glowing mountains themselves, casting deep shadows in the crevices and valleys. The style is reminiscent of Japanese pop art and cyberpunk aesthetics, utilizing bold linework and flat color fields. The image has a poster-like quality, with clean edges and a lack of atmospheric perspective, emphasizing the graphic nature of the scene. The overall mood is surreal and energetic.