Anime illustration prompt, portrait 3:4: a cheerful young adult anime girl in a cream knit sweater and rust-red scarf sitting in front of a whimsical castle built from stacked Singles' Day delivery cardboard boxes in a cozy living room at night, the tallest cardboard tower topped with a small gold flag reading 11.11, sealed parcels tied with red ribbons and an open box of tissue paper at her feet, a white sneaker and a skincare gift set peeking out of the boxes, warm amber lamplight against a deep blue snowy night window, clean cel-shaded anime style, soft painterly shading, joyful festive mood, no watermark, no logo, only the short text 11.11.