A vibrant, neon-lit cityscape at dusk, with towering skyscrapers and bustling streets. In the midst of this Marvel-inspired metropolis, a gleaming bright red and blue logo of the iconic superhero franchise dominates the frame, surrounded by dynamic action poses of Iron Man, Captain America, Black Widow, and Thor. The soft glow of streetlights and building lights casts an urban glow, while bold shadows define the characters' powerful stances.