点线极简聊天图标

点线构成的聊天图标，由点和线组成的极简对话气泡，简单的几何构造，干净的线条艺术，稀疏设计，负空间利用，基于线条的设计

dot and line chat icon, minimal speech bubble created with dots and lines, simple geometric construction, clean line art, sparse design, negative space utilization, line-based design