用简洁的手绘涂鸦风格卡通来绘制，就像一个人用黑色毡尖笔随手画的一样。使用自然的马克笔线条、略微抖动的轮廓、细微的手绘不完美感、略微张开的线条边…

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.