用简单的手绘涂鸦风格卡通绘制，就像用黑色马克笔的人随手勾勒的一样。使用自然的马克笔线条、略带晃动的轮廓、微妙的手绘不完美感、略微开放的边缘，并…

Draw in a simple hand-drawn doodled style cartoon, as if sketched by a person with a black felt-tip pen. Use natural marker lines, slightly wobbly contours, subtle hand-drawn imperfections, slightly open edges, and a warm editorial doodle feeling. Avoid polished vector-clean results, avoid overly crisp digital perfection, and keep the image simple, airy, flat, and understated. Use sky blue only as the accent color.