灰色3D时钟模型

画风为3D素模与线框叠加渲染；主体是浅灰色圆形时钟，厚实外圈带轻微反光高光，表盘和边框覆盖均匀细密网格线，中心有三根细长深灰色指针，无数字刻度；背景为纯白；正面平视、居中构图、近景特写；柔和冷灰光线、低对比度；1:1方形画幅。

3D clay and wireframe render of a light-gray circular clock, thick rim with subtle highlights, fine even grid lines across the face and frame, three slender dark-gray hands at the center, no numerals; plain white background; front view, centered composition, close-up; soft cool-gray lighting, low contrast; square 1:1 aspect ratio.