colossal sci-fi cyberpunk arch—500 m tall—centered on a pure white background. Construct it from thousands of biomechanical skulls and fractured techno-bones fused with plated chrome girders etched in glowing digital runes. The keystone is a horned skull pulsing with neon cyan and magenta energy. Massive buttresses flank the arch, formed by stacked skull columns linked with illuminated fiber-optic chains. Spiked steel panels and dripping iridescent resin veins coat the structure. At the base, include faint horizon-line silhouettes of miniature Seven Wonders of the World—for scale. Textures: polished chrome with neon patina, bone-white with ash-gray digital washes, and glossy neon bloodstains. No extra text. Neutral lighting, minimal shadows., #arch#