复古质感空间极简主义简约背景

An ultra-minimalist background design, featuring a simple geometric shape and a single muted color. The style imitates the minimalism of Piet Mondrian, with clean lines and flat color blocks. Use Cycles rendering to enhance the texture and depth of the image. The composition includes a wide-angle shot, soft lighting, and a slight vignette effect. --ar 16:9