简约卡通梦幻蓝天云朵渐变背景插画

illustration, background, cartoon, main colors blue and pink, soft and layered color scheme, no people, main objects sky and clouds, clouds in various shapes distributed around the scene, sky gradient from deep blue to light pink from top to bottom, no decorative elements, background design simple, large areas of sky and clouds, creating an open visual effect, overall visual effect fresh and natural, conveying a sense of tranquility and dreaminess