Minimalist Cave Painting Style Avatar

Transform the input image into a {argument name="ratio" default="1:1"}, extremely minimalist, symbolic line illustration suitable for use as a social-media avatar. The subject can be a person, an animal, or a plant. Do not reproduce the exact shape, do not depict fine detail, do not draw a complete outline; instead, like an early cave painting or a primitive carving, extract the most essential expression, posture, and silhouette features from the subject, and leave a mark directly with the fewest possible lines. The goal is not to draw the whole thing, but to create something like a distilled visual symbol — one that lets people recognize its character and spirit from just a few strokes. The number of lines must be extremely limited, ideally kept within {argument name="number of lines" default="3 to 6 strokes"}. Every stroke should be simple, direct, and decisive, as if drawn in one continuous motion, with natural pauses and slight variation — not mechanical, not overly decorated, not excessively smooth, and not a fully closed outline in the style of a modern logo. Breaks, empty space, and omission are allowed, letting the blank space take part in the expression. Do not draw facial-feature detail, fur/hair texture, clothing folds, leaf veins, or other explanatory detail — keep only the most critical contour turns and the key points that carry the expression. The overall character should be rustic, direct, restrained, and precise, like a primal visual language. The background should stay simple, quiet, and calm, and can be {argument name="background color" default="deep crimson red"}, a stone-wall color, grayish white, a dark color, or another plain, clean tone that sets off the lines. The main lines should be clear, simple, and have presence. Avoid realism, avoid shadows, avoid volume, avoid complex decoration, and avoid a modern graphic-design feel. The final result should feel like an extremely distilled visual mark: sparse, precise, incisive, and still — extracting the subject's expression and spirit in just a few strokes.