Portrait anime minimalist cute

A soft, minimalist anime bust portrait, depicting a cute young woman, with a pure light gray background. Drawn in a clean pastel style, with thin sketch-like lines and flat soft colors. She has flowing long hair in light blonde, with soft layers, and long bangs covering her forehead; she has a pair of round big light blue eyes, fair skin, and a slightly open small mouth revealing a faint confusion. She is wearing a loose long-sleeve top, with a wide comfortable neckline. Her pose is slightly turned toward the viewer, with one hand raised, the index finger lightly touching the side of her head, as if confused. Place 1 floating blue question mark at the upper left of her head. Her expression should appear innocent, absent-minded, and endearing. Keep the composition centered, airy, and clean; do not add extra objects, do not have a complex background, and do not have strong shadows.