.links .link-item {
  width: 20%;
  float: left;
  position: relative;
  min-height: 1px;
  padding-right: 15px;
  padding-left: 15px;
}

.links .link-1,
.links .link-2,
.links .link-3,
.links .link-4 {
  width: 25%;
}

.links .title {
  color: #333;
  font-size: 22px;
  text-align: center;
  margin-bottom: 15px;
}

.links .LK_box {
  width: 100%;
  height: 38px;
  line-height: 38px;
  border: 1px solid #ddd;
  border-radius: 18px;
  margin-bottom: 15px;
}

.links {
  text-align: center;
  color: #B4B4B4;
  position: relative;
}

.links-box {
  box-sizing: border-box;
  height: 38px;
  position: relative;
  border-radius: 20px;
}

.links-box dt {
  text-align: left;
  line-height: 38px;
  position: relative;
  cursor: pointer;
}

.links-box dt a {
  display: block;
  text-indent: 16px;
  z-index: 2;
  color: #6B6B6B;
  text-decoration: none;
}

.links-box dt a b {
  overflow: hidden;
  margin-right: 40px;
  display: block;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: normal;
}

.links-box dt .ico {
  position: absolute;
  right: 0;
  top: 0;
  width: 40px;
  height: 100%;
  z-index: 1;
  background: url(../images/nav-01.png) no-repeat center;
}

.links-box dd {
  display: none;
  width: 100%;
  position: absolute;
  top: 38px;
  border: 1px solid #ddd;
  border-radius: 20px;
  background: #fff;
  box-sizing: border-box;
  max-height: 140px;
  overflow: auto;
  z-index: 888;
}

.links-box dd::-webkit-scrollbar-track {
  -webkit-box-shadow: fff;
  margin: 10px;
  width: 10px;
}

.links-box dd::-webkit-scrollbar {
  width: 10px;
}

.links-box dd::-webkit-scrollbar-thumb {
  border-radius: 4px;
  scorlltop: 30px;
  background-image: -webkit-gradient(linear,
      left bottom,
      left top,
      color-stop(0.44, #196DD1),
      color-stop(0.86, #196DD1));
}

.links-box.open dd {
  display: block;
}

.links-box dd a {
  display: block;
  text-align: left;
  padding: 8px 15px;
  line-height: 18px;
  color: #666;
}

.links-box dd a.on {
  color: #fff;
  background: #196DD1;
}

.links-box dd a:hover {
  background: #196DD1;
  color: #fff !important;
}

/* 手机适配样式 - 屏幕宽度小于768px时生效 */
@media (max-width: 768px) {


.links-box dt .ico {
  position: absolute;
  right: 0;
  top: 0;
  width: 40px;
  height: 100%;
  z-index: 1;
  background: url(../images/nav-02.png) no-repeat center;
}


  /* 改为单列布局 */
  .links .link-item,
  .links .link-1,
  .links .link-2,
  .links .link-3,
  .links .link-4 {
    width: 100%;
    float: none;
    margin-bottom: 20px;
    padding-right: 10px;
    padding-left: 10px;
  }
  
  /* 调整标题大小 */
  .links .title {
    font-size: 18px;
    margin-bottom: 10px;
  }
  
  /* 增大触摸区域，优化移动端交互 */
  .links .LK_box,
  .links-box {
    height: 44px;
    line-height: 44px;
  }
  
  .links-box dt {
    line-height: 44px;
  }
  
  /* 调整下拉菜单样式 */
  .links-box dd {
    top: 44px;
    max-height: 200px; /* 增加移动端可显示区域 */
    width: calc(100% - 20px); /* 适配内边距 */
    left: 10px;
  }
  
  /* 调整链接项 padding */
  .links-box dd a {
    padding: 12px 15px; /* 增大点击区域 */
    line-height: 20px;
  }
  
  /* 优化图标显示 */
  .links-box dt .ico {
    background-size: 20px; /* 适配小屏幕图标 */
  }
}