会话产品看似人人都能使用，但“人人”并不相同。视障用户依赖屏幕朗读，听障参与者需要实时字幕，行动不便者难以快速点击，跨语言用户可能因表述障碍被排除。无障碍不应是插件，而应发展为沟通产品的基础。 包容性设计要允许组合图片。语音能够转文字

社交电商把交易放进同一个环境，对话工具则进一步把购物变成连续沟通。消费者不再只浏览静态页面，而会询问“多久能送到”。这种互动足以降低选择压力，也让品牌从一次曝光进入更长的决策过程。 好的智能导购首先应该倾听，而不是急着发送购买链接。应

The story of chat systems begins before chat became a daily habit. In the early computing age, computers were massive, institutional, and reserved for trained specialists. Work was usually handled through delayed computation. People prepared paper tapes, submitted programs and data, and waited fo