奇幻水彩山城与繁忙河港

绘制一幅完整的奇幻手绘水彩城市插画：一座层层叠叠的密集山城沿坡向下延伸至宽阔河流港口，港内停泊货船与渡轮，并分布热闹的水上市场。山坡上紧密相连的老建筑层层攀升，屋顶可见卫星天线、水箱和晾晒衣物；高架人行道在建筑间穿越，狭窄弯曲的小巷向河岸下行。远处对岸矗立现代玻璃塔楼，与近景古老、拥挤的街区形成清晰的新旧层次，展现城市规模。采用传统水彩的流动颜料扩散、可见轻柔飞溅和层叠纸面纹理，以细致手绘线条勾勒建筑与港口细节。使用轻盈柔和、低至中等饱和度的色彩，避免强烈对比；画面细节丰富但空间层次清楚，具有故事书般的奇幻气息与手工插画魅力。不要添加特定现实地名、可读文字、人物主体、标志或水印。

【English Prompt】
Paint a complete fantasy hand-drawn watercolor city illustration. A dense, layered hillside city descends toward a broad river harbor, where cargo boats and ferries share space with lively floating markets. Tightly packed older buildings climb the slope, their rooftops dotted with satellite dishes, water tanks and hanging laundry. Elevated pedestrian walkways weave between structures, while narrow winding alleys lead down to the waterfront. Across the river, distant modern glass towers form a clear contrast with the crowded historic district in the foreground and convey the city's vast scale. Use flowing traditional watercolor diffusion, subtle visible pigment splashes and layered paper-like texture, with delicate hand-drawn linework defining architectural and harbor details. Keep the palette airy, gentle and softly saturated rather than high-contrast; make the environment richly detailed yet spatially legible, with a classic storybook-fantasy illustration charm. Do not add a specific real-world place name, legible text, a human focal subject, logo or watermark.

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