An avant-garde anime portrait of a tiny girl with lime green hair frolicking joyfully in pursuit of an immense, golden sun that engulfs the ethereal scenery, her minuscule figure brimming with youthful exuberance as she chases the celestial giant, rendered in a highly stylized manner with sleek lines and vivid hues, employing daring angles and bokeh for a premium, upscale social media icon brimming with cosmic whimsy, meticulous astronomical details, 8k --ar 1:1 --s 400