插画设计：童话树屋

Whimsical illustration of a fairytale treehouse built in a giant ancient oak, a round wooden cabin with a crescent-moon window and a rope ladder, a spiral wooden staircase wrapping around the massive trunk, glowing string lights draped between the branches, tiny windows glowing warm amber in the sunset, a fox climbing the ladder toward the door, mushrooms and wildflowers around the roots, fireflies floating in the blue dusk air, layered painterly style with rich texture, palette of forest green, warm gold, sunset coral and deep blue, magical storybook atmosphere, high detail, high resolution, 4k