打字速度测试

使用 HTML5、CSS3 和 JavaScript 构建一个交互式打字速度测试。打造界面简洁、包含文本显示区和输入区的设计。实时计算 WPM 和准确率。添加难度等级，并选用合适的文本。包含错误高亮和纠正追踪。实现带性能图表的测试历史记录。支持通过导入文本创建自定义测试。加入显示按键的虚拟键盘。支持多种语言和键盘布局。创建适配所有设备的响应式设计。添加带排行榜的竞赛模式。

Build an interactive typing speed test using HTML5, CSS3, and JavaScript. Create a clean interface with text display and input area. Implement WPM and accuracy calculation in real-time. Add difficulty levels with appropriate text selection. Include error highlighting and correction tracking. Implement test history with performance graphs. Add custom test creation with text import. Include virtual keyboard display showing keypresses. Support multiple languages and keyboard layouts. Create a responsive design for all devices. Add competition mode with leaderboards.