Minimalist Single Line Social Media Avatar

Convert the input image into a minimalist single-line illustration suitable for a social media avatar, with a default aspect ratio of 1:1. The subject can be a person, a cat, a dog, another animal, or a plant. Based on the input subject type, automatically extract the most recognizable outer contour and key features, and summarize them into an artistic minimalist single-line avatar/image illustration. The overall goal is not mechanical tracing but to preserve the subject's spirit and recognition, reconstructing it with a more advanced, more spirited single-line approach. [Subject Processing Logic] If the subject is a person: retain key contours such as face shape, forehead, nose bridge, mouth transitions, chin, ears, hairstyle, etc., keeping only a few essential facial features, avoiding detailed rendering. If the subject is a cat, dog, or other animal: retain key identification features such as head shape, ears, muzzle contour, eye expression, and general hair flow, avoiding complex hair details. If the subject is a plant: retain the most recognizable form characteristics from the flower, leaves, branches, fruit, or overall contour, summarizing its posture and rhythm with simple lines. [Line Style Requirements] The lines must be smooth, rounded, free-flowing, expansive, natural, and as continuous as possible, flowing in one breath, possessing a sense of breath and improvisation. The overall style should primarily use soft curves, minimizing sharp, stiff, rigid angular lines. Do not draw the contour like a rigid logo outline; avoid being mechanical, stiff, fragmented, or overly regular. The lines should be simple yet full of vitality, with a touch of casualness and artistic temperament, appearing relaxed, lively, and collectible. [Composition and Avatar Adaptation Logic] The overall composition should be designed for a 1:1 square format, with the subject clear, concentrated, and eye-catching, suitable for use as a social media avatar. The subject should preferably be centered or slightly off-center, with a complete contour and clear visual center of gravity. Leave reasonable white space to avoid the subject being too large or touching the edges, ensuring that even after circular cropping for the avatar, the key parts of the subject remain complete, clear, and highly recognizable. The image should remain simple, powerful, and easy to recognize even at small sizes. [Background Color Logic] The background color should not be fixed to a single color or default to blue. Prioritize extracting a suitable "dark color logic" background based on the overall color temperament of the input image itself, choosing appropriate background colors from the subject's dark color tendencies. If the user explicitly specifies a background color, prioritize using the user-specified color while maintaining an overall high-end, restrained, and tense dark color treatment based on it. Background color selection should follow these principles: - Prioritize deep, pure, emotionally tense solid color backgrounds - The background should effectively contrast with the subject's lines, forming a clear contrast - Do not fix a specific hue; flexibly choose from deep blue, deep green, deep purple, deep brown, deep gray, wine red, ink black, blue-gray, olive dark, etc., based on the image's temperament - If the image suits a cool background, adopt a cool dark color logic - If the image suits a warm background, adopt a warm dark color logic - If the user specifies a color, choose a more subdued, more avatar-appropriate dark version based on that color - Avoid neon, cheap vibrant feelings - Avoid gray, dull, low-contrast, lifeless backgrounds [Subject Line Color Logic] The main outline of the subject should preferably use white fine lines, or light-colored fine lines that contrast sharply with the background. The lines should not be too thick, nor so thin that they lose presence; they should be light, clear, and clean. If the background is dark, prefer using white or light warm white lines to enhance recognition and a fresh feel. [Embellishment Element Logic] Add a small number of random, improvised, natural small colorful embellishment elements around the subject to enhance spirit, fun, and a relaxed feel. Embellishment elements can be: small dots, small arcs, small stars, small smiley faces, small short strokes, small lightning bolts, simple geometric symbols, etc. The embellishment style should be rounded, playful, relaxed, and natural, like casually added inspirational decorations, not deliberately arranged template elements. Embellishments must be controlled appropriately: - Small quantity, just enough - Natural distribution, slightly random - Not too dense, not too symmetrically rigid - Do not overshadow the subject - Only exist to assist the atmosphere - Embellishment colors can be extracted in small amounts from the background color's adjacent or complementary logic, or use small pops of color like yellow, orange, pink, light purple, light coral, etc. - Embellishments should overall coordinate with the subject and background, avoiding a stiff collage appearance. [Overall Style Goal] The overall image should be minimalist, light, modern, lively, and artistically refined. It should have both the clean feel of a single-line illustration and the relaxed vitality and life of improvised doodling. The subject should appear rounded, free-flowing, and spirited, not stiff, dull, or templated. The final effect should be suitable as a social media avatar: eye-catching, recognizable, fun, and design-oriented, while also possessing a relaxed, natural, lively, and collectible artistic temperament. [Issues to Avoid] Do not be photorealistic, no shadows, no light-dark volume, no complex textures, no complex scenes. Do not mechanically outline, no stiffness, no sharpness, no overly regularity. Do not fix the background color to a single blue template. Background should not be overly bright or glaring, nor gray, dull, and lifeless. Decorations should not be excessive, should not steal the subject's focus. Do not lose spirit due to minimalism, nor lose restraint due to decoration. Aspect ratio 16:9.

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