Generate a realistic 3D model of Thor’s hammer (Mjölnir), inspired by the Marvel Cinematic Universe. The hammer head should be large, rectangular, made of metallic Uru with a brushed steel texture, clean beveled edges, and glowing Norse rune engravings. The handle should be wrapped in dark brown leather with a spiraled pattern and chrome silver rings, ending in a detailed pommel with an engraved cap and leather loop. Add realistic lighting, scratches, scuffs, and subtle weathering. Use accurate proportions and clean topology for cinematic rendering.