Minimalist Single Line Social Media Avatar

Please transform the input image into a minimalist single-line illustration suitable for social media avatars, with a default aspect ratio of 1:1. The subject can be a person, cat, dog, other animals, or plants. Based on the input subject type, automatically extract the most recognizable outer contours and key features, and summarize them into an artistic, minimalist single-line avatar/image illustration. The overall goal is not mechanical outlining, but retaining the subject's charm and recognizability, reconstructing it with higher elegance and spirit through single lines. [Subject Processing Logic] If the subject is a person: retain key contours such as face shape, forehead, bridge of the nose, mouth transitions, chin, ears, hairstyle, keeping only necessary facial features to avoid cluttered details. If the subject is an animal: retain head shape, ears, muzzle contours, eye expressions, and the main flow of fur to avoid complex details. If the subject is a plant: retain the most recognizable morphological features of flowers, leaves, branches, or fruits, summarizing their posture and rhythm with simple lines. [Line Style Requirements] Lines must be smooth, rounded, stretched, bold, and natural, as continuous as possible, with a sense of breath and improvisation. Use soft arcs mainly, avoiding sharp, stiff, or rigid lines. Do not draw as a rigid logo-style outline. Lines should be simple but vital, with a touch of casual artistic flair, looking relaxed and collectible. [Composition and Avatar Adaptation] 1:1 square design. The subject should be clear, concentrated, and prominent. Centered or slightly centered composition with clear visual focus and sufficient white space. [Background Logic] Do not fix the color to one type (not always blue). Select dark-toned background logic based on the image's temperament. Avoid neon or cheap bright colors. [Line Color Logic] Use thin white lines or light-colored lines contrasting with the background. [Embellishment Logic] Add small, random, colorful dots, arcs, stars, or geometric symbols to enhance spirit and fun. Keep them sparse and natural. [Overall Goal] Minimalist, light, modern, and artistic. Suitable for social media: eye-catching, recognizable, and fun. [Avoid] Realism, shadows, textures, complex scenes, mechanical outlining. Ratio 16:9