世纪中期现代复古双拼插画

Create a vertical 3:4 mid-century modern split poster inspired by 1950s and 1960s editorial illustration.

The composition is divided into two stacked panels: the upper panel presents the subject as a clean portrait or lifestyle scene, while the lower panel transforms the same subject into a stylized mid-century modern character world. Use warm retro colors, atomic-age geometric shapes, rounded furniture silhouettes, paper grain, flat gouache texture, screen-print softness, and classic old-magazine illustration charm.

The subject can be a non-specific Eastern adult, a cute healthy Eastern child, a family moment, a pet, or a character-like personal IP. Do not copy a real person's identity or facial features. Keep the result polished, collectible, and suitable for a prompt-sharing visual set.