Abstract layered lines with a blue 3D glass-textured glowing letter "Ai" in the center. Scene: Abstract visual space with depth, using the middle horizon as the visual dividing line. Style: Minimalist tech abstract style, secondary main reverse shape design, distinct layers. Color palette: Tech blue gradient contrasting tones, overall cool-toned. Lighting: Strong light and shadow effects, the 3D glass-textured letter has a self-illumination effect, with tech-style highlights dotted in the画面细节处. Composition: Depth composition, full composition tension. Purpose: Tech brand promotional poster, main visual design for AI creative activities.