Portrait minimaliste et futuriste d'une fille d'anime

A simple anime-style upper-body character illustration on a plain light gray background, centered and facing slightly left in a calm three-quarter pose. The character is a young futuristic female android or virtual idol with {argument name="hair color" default="platinum blonde"} hair, styled with one thick braided bun over the left side of the head, long loose side strands, and smooth straight hair flowing past the shoulders. She wears a geometric sci-fi headset over the left ear with a glowing cyan rectangular panel and angular metallic frame. Her outfit is a sleek white bodysuit with black structural straps and trim, a tall black high-neck collar, and thin glowing cyan accent lines running vertically and diagonally across the chest and torso. She has detached white arm sleeves with black bands, including one small dark diamond-shaped ornament on the upper arm. Render the image as a clean, minimal sketchy illustration with delicate pencil-like linework, light cel shading, soft pastel colors, subtle cyan highlights, and a polished concept-art feel. Keep the composition cropped from the top of the head to below the chest, with lots of negative space and no props, no text, and no detailed background.