A sprawling cyberpunk Christmas cityscape in cinematic 21:9 format, showcasing cutting-edge megastructures infused with holiday spirit. Towering vertical gardens embedded in sleek skyscrapers are illuminated with bioluminescent Christmas ornaments, while elevated walkways resemble glowing, translucent ribbons wrapping the city in festive cheer. A massive digital Christmas countdown is projected onto the side of an ultra-modern, curved building, while streets below buzz with autonomous holiday-themed vehicles. The skyline features a massive, levitating star-like structure, casting golden rays over the city and marking the central square, where a 3D-printed Christmas tree pulses with rhythmic, colorful light patterns. The ambient light is a mix of neon blues, reds, and golds, with soft snow falling gently over this immersive holiday metropolis.