Soft white 3D clouds in a bright blue sky

oft, fluffy white clouds floating gently in a bright blue sky. The clouds are rounded and puffy with smooth edges, rendered in a cute 3D cartoon style. Light pastel shading with subtle highlights and soft shadows. A cheerful, child-friendly look with a calm daytime atmosphere. No characters, no text, no birds. High clarity, clean composition, vibrant yet soft colors, 16:9 aspect ratio.