卡通风清新自然城市景观高楼大厦绿色山丘插画

illustration, minimalistic cartoon style, light blue, white and green color palette, cityscape with compact and staggered buildings on green hills, background of mountains and sky depicted with simple lines and color blocks, building details include windows and roof designs, surrounded by trees, serene and harmonious atmosphere, fresh and natural environment, bright and clear visual effect, conveying a sense of calm and peace