Escher-style advent-calendar polyhedron: a floating dodecahedron of porcelain and packed snow, each face has a hinged door opening into a tiny glowing micro-scene (mini fireplace, mini pine, mini frozen lake), several doors slightly ajar with warm light spilling out, clockwork hinges and micro gears, elegant kintsugi gold cracks, icicles and powder snow, high detail, clean silhouette, centered single object, premium PBR, game-ready topology, no characters, no numbers, no text , #Christmas2025#