Main subject: Square tech base with light white-green gradient AI 3D characters, surrounded by elements like buildings, wind power, photovoltaics, data charts, cloud tech Scene: Simple and clean light blue-white solid background Style: Flat vector line art, 2.5D top-down perspective, business atmosphere Color tone: Light blue, pure white as main colors, green as accents Lighting: Flat coloring with no distinct shadows, clean and transparent colors Composition: Base centered connecting all elements, neat and well-coordinated layout Use case: Tech business poster, smart energy data analysis, enterprise digitalization promotional image