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A cinematic fantasy concept art piece, wide angle landscape. A massive, ancient stone fortress citadel is completely encased in thick ice, glaciers, and deep snow, situated in a perpetual, dark winter northern kingdom. The atmosphere is extremely cold, melancholic, and vast. The color palette is dominated by deep blues, frosted whites, and cold grays. Focus on a high tower window: Inside a high castle chamber, visible through a frosted window, a single, warm, glowing oil lamp burns steadfastly, casting a small orange light against the overwhelming darkness outside. Interior Cutaway View (optional but recommended for detail): Inside that freezing chamber, a noble young prince wrapped in heavy furs sits surrounded by towering piles of ancient, frozen scrolls and books that seem to trap him. He looks contemplative and burdened. The small oil lamp on his desk illuminates his face. A loyal, standing attendant figure is beside him. The room feels ancient and scholarly but frozen in time. --ar 21:9 (超宽电影画幅) or --ar 16:9