body {
    font-family: 'DingTalk-JinBuTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
}

.tab1 {
  width: 100%;
  margin: 20px auto 0 auto;
}
.menu ul {
  padding: 0px;
  margin: 0px;
}
.menu {
  height: 28px;
}
.menu li {
  float: left;
  width: 23%;
  text-align: center;
  line-height: 28px;
  height: 28px;
  cursor: pointer;
  color: #666;
  font-size: 14px;
  overflow: hidden;
  background: #F7F7F7;
  border-radius: 5px;
  margin: 0px 1%;

}
.menu li.off {
  background: #3E60F320;
  color: #4771E3;
  font-weight: bold;
}

.menudiv {

  border-top: 0;
  background: #fefefe;
  border-radius: 5px;
  margin: 20px 6px 10px 6px;
  border: 1px solid #4771E350;
  min-height: 100px;
  height: 100%;
}
.menudiv div {
  padding: 15px;
  line-height: 28px;
}
@media screen and (max-width: 1280px) {
  .xuanfu {
    right: -300px;
  }
}

/* 右侧随机二维码样式 */
.xuanfu {
  position: fixed;
  right: 50px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 999;
  background: white;
  border-radius: 10px;
  overflow: hidden;
}

/* 响应式设计：屏幕宽度小于1320px时隐藏右侧二维码 */
@media screen and (max-width: 1320px) {
  .xuanfu {
    display: none !important;
  }
}