/* 基础重置和全局样式 */
* {
  box-sizing: border-box;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  margin: 0;
  padding: 0;
  background: #f0f2f5;
  color: #333;
  height: 100vh;
  display: flex;
  overflow: hidden;
}

/* 工具类 */
.hidden {
  display: none !important;
}