A modular 3D ground tile designed to seamlessly tile in all directions, representing earthy soil covered with short grass (lawn). The surface must be flat in height, suitable for paving a continuous 3D terrain. Style is cell-shaded (toon) with clean color separation and simplified shapes. Grass should be stylized and minimal, integrated into the ground geometry (not individual blades). Use low-poly, clean geometry optimized for real-time use. No photorealism, no noise textures, no complex shaders. All edges must align perfectly for infinite tiling in a 3D world.