现代几何卡通UPA风格角色互动插画

[Character A] and [Character B], modern geometric cartoon illustration × UPA style design language × limited animation style motion design × clean digital flat painting. Character modeling is highly simplified, with squares, circles, trapezoids, and curves forming the head and body, retaining the characters' core hairstyles, main colors, iconic accessories, and clothing color blocks. Clear and smooth thick black outlines, large areas of uniform solid color filling, a small amount of simple hard-edged shadows, exaggerated palms, shoes, and limb proportions. The two characters engage in clear, humorous, and dynamically intense interaction, forming clear silhouettes with actions such as stretching significantly, jumping, chasing, dodging, kicking, and lunging at each other. Their movement directions, eye contact, and expressions echo each other, presenting an instantly readable comedic relationship. Vertical composition, characters scaled down and concentrated in the middle and lower part of the frame, leaving a large area of blank space above. A single high-purity solid color background, with a simple comic symbol, prop, or graphical element added between the characters to establish a narrative connection. Overall uses a small number of high-contrast colors: black, white, character main colors, and one or two emphasis colors. Color block edges are sharp, filling is uniform, outlines are complete, surfaces are flat, using a clean, clear modern digital illustration texture, suitable for animation promotional images, stickers, and mobile wallpapers.