2D 卷轴：横版冒险关卡

2D side-scrolling platformer game background painting of a floating archipelago connected by rope bridges and stone stairways, a hero on a small ledge overlooking a dramatic vertical descent with waterfalls dropping into the clouds below, layered parallax mountain silhouettes in cool blues fading with altitude, distant floating islands with glowing ruins and giant windmills, foreground elements in sharp detail with warm foliage, palette shifting from golden afternoon on the near planes to cool lavender in the far sky, clean hand-drawn painterly style with strong silhouette readability, cozy adventure mood, detailed game art background, 8k