/* 底部导航栏样式 */
.nav {
  display: flex;
  background: #fff;
  border-radius: 10px 10px 0 0;
  overflow: hidden;
  border: 1px solid #D0E7FF;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
}

.nav a {
  flex: 1;
  padding: 12px 0;
  border: none;
  background: #fff;
  font-size: 14px;
  color: #666;
  text-align: center;
  text-decoration: none;
  transition: all 0.2s;
}

.nav a.active {
  background: #1677FF;
  color: #fff;
}