.navbar{
    background: linear-gradient(108deg,#161e29,#01244e);
}
.banner-con{
    padding-top: 100px;
}
.banner-con .banner{
   position: relative;
}
.banner-con .banner .banner-left{
    padding-left: calc((100% - 1670px) / 2);
    padding-right: clamp(30px,5vw,100px);
    max-width: 50%;
    position: relative;
    color: #ffffff;
    padding-top: 100px;
    padding-bottom: 100px;
    z-index: 2;
}

.banner-con .banner .banner-left .detail,.banner-con .banner .banner-left .material{
    line-height: 2;
      display: -webkit-box;
  -webkit-box-orient: vertical;
  
  /* 核心 2：限制最多显示几行（写几就代表最多显示几行） */
  -webkit-line-clamp: 2; 
  
  /* 核心 3：必须隐藏超出的部分 */
  overflow: hidden;
}
.banner-con .banner .banner-left .ul-con{
    margin: 40px 0;
    white-space: nowrap;
    position: relative;
    height: 130px;

}
.banner-con .banner .banner-left .ul-con ul{
     background: linear-gradient(to right,#fae1b4,#ffffff,#ffffff);
    position: absolute;
    left: 0;
    top: 0;
    width: 115%;
    color: #1a1a1a;
    border-radius: 20px;
    text-align: center;
}
.banner-con .banner .banner-left ul li{
    padding: 10px clamp(15px,2vw,45px);
    flex: 1;
    position: relative;
}
.banner-con .banner .banner-left ul li:not(:last-child):before{
    content: "";
    width: 1px;
    height: 50%;
    background: linear-gradient(to bottom,transparent,#853623,transparent);
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    position: absolute;
}
.banner-con .banner .banner-left ul p{
    margin-bottom: 0;
}
.banner-con .banner .banner-left ul li p:first-child{
    font-family: "Impact";
    font-size: 24px;
}
.banner-con .banner .banner-left:before{
    content: "";
    background: linear-gradient(to bottom,#000000,#02326c);
    top: 0;
    left: 0;
    position: absolute;
    width: 100%;
    height: 100%;
    z-index: -1;
    clip-path: polygon(0 0 ,0 100%,96% 100%,100% 0);
}
.banner-con .banner .banner-left:after{
    content: "";
    background: linear-gradient(to bottom,#000000,#02326c);
    top: 0;
    left: 0;
    position: absolute;
    width: 100%;
    height: 100%;
    z-index: -1;
    clip-path: polygon(0 0 ,0 100%,100% 100%,96% 0);
    opacity: 0.8;
}

.banner-con .banner .banner-right{
    flex-shrink: 0;
    width: 52%;
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    height: 100%;
}
.banner-con .banner .banner-right img{
    position: absolute;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}


.advantage-con .advantage .left-right-con{
    gap: clamp(15px,2vw,30px);
    margin-top: 30px;
}
.advantage-con .advantage .left-con{
    flex-shrink: 0;
    flex: 1;
}
.advantage-con .advantage .left-con ul{
   gap: clamp(15px,2vw,30px);
    height: 100%;
}
.advantage-con .advantage .left-con ul li{
    padding: 30px;
    background: #f7f7f7;
}
/*.product-card {*/
  /*border: 1px solid #ddd;*/
/*  padding: 15px;*/
/*  border-radius: 6px;*/
/*  font-family: sans-serif;*/
/*}*/

/* 1. 彻底隐藏复选框本身，不让它在页面上显示 */
.hidden-checkbox {
  display: none;
}

/* 2. 标题样式（用 label 代替 summary） */
.card-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 18px;
  font-weight: bold;
  cursor: pointer; /* 鼠标悬停变手型 */
  margin-bottom: 8px;
  user-select: none; /* 防止反复点击时蓝字高亮 */
  position: relative;
}

/* 3. 核心：默认状态（未点击时） */
.content-text {
  margin: 0;
  font-size: 14px;
  color: #666;
  line-height: 1.5; /* 精确指定行高 */
  
  /* 关键：虽然在下方，但锁死高度为刚好一行（1 * 1.5 = 1.5em） */
  max-height: 1.5em; 
  overflow: hidden;  /* 强行切断并隐藏第二行及以后的所有文字 */
  
  /* 丝滑的高度过渡动画 */
  /*transition: max-height 0.4s ease-in-out; */
}

/* 4. 核心：点击展开状态 */
/* 当隐藏的复选框被勾选时，找到紧跟在后面的 .content-text 并改变其高度 */
.hidden-checkbox:checked ~ .content-text {
  max-height: 600px; /* 设一个足够容纳整段话的最大高度值 */
}

.card-title:after{
      content: '';
    /*position: absolute;*/
     background: url(../images/xia.png) no-repeat;
    
    width: 16px;
    height: 16px;
    background-size: contain;
    transition: transform .2s;
}
.hidden-checkbox:checked ~ .card-title:after{
   background: url(../images/heng.png) no-repeat;
      width: 16px;
    height: 16px;
    background-size: contain;
    transition: transform .2s;
 
}

.advantage-con .advantage .right-con{
    max-width: 50%;
}

.advantage-con .advantage .right-con ul{
    gap: clamp(15px,2vw,30px);
}
.advantage-con .advantage .right-con ul img{
    margin-left: 0;
    margin-right: 0;
}
.principle-con .principle .left-right-con{
    gap: clamp(15px,2vw,30px);
}
.principle-con .principle .left-con{
    flex-shrink: 0;
    flex: 1;
    background: #f7f7f7;
}
.principle-con .principle .left-con img{
    margin: 0 auto;
    padding: 50px;
}
.principle-con .principle .right-con{
        max-width: 776px;
}
.principle-con .principle .right-con p{
    line-height: 2;
}
.principle-con .principle .right-con p:last-child{
    margin-bottom: 0;
}
.parameter-con .parameter .table-data{
    overflow-x: auto;
    text-align: center;
    border-radius: 15px;
}
.table-data table tbody tr td,.table-data table tbody tr th{
    vertical-align: middle;
}
.table>:not(caption)>*>*{
    color: #6b7280;
}
.table-data table tbody tr:first-child td,.table-data table tbody tr:first-child th{
    font-weight: bold;
    background: #222b35;
    color: #ffffff;
    padding-top: 20px;
    padding-bottom: 20px;
}

@media (max-width:1670px){
    .banner-con .banner .banner-left{
        padding-left: 15px;
    }
}
@media (max-width:1580px){
    .principle-con .principle .right-con{
        max-width: 50%;
    }
}
@media (max-width:1080px){
    .banner-con .banner{
        flex-wrap: wrap;
    }
    .banner-con .banner .banner-left{
        max-width: 100%;
        padding-right: 15px;
    }

    .banner-con .banner .banner-left .ul-con ul{
        width: 100%;
    }
    .banner-con .banner .banner-left:before,.banner-con .banner .banner-left:after{
        clip-path: polygon(0 0, 0 100%, 100% 100%, 100% 0);
    }
    .banner-con .banner .banner-right,.banner-con .banner .banner-right img{
        position: static;
        width: 100%;
    }
    
    .menu-consult-con::after{
        display: none;
    }
    .menu-consult-con .menu-consult{
        flex-wrap: wrap;
        gap: 20px;
    }
    .menu-consult-con .menu-consult ul{
        flex-wrap: wrap;
        gap: 20px;
    }
    .menu-consult-con .menu-consult > a{
        margin-right: 0;
    }
    .advantage-con .advantage .left-con ul li{
        padding: clamp(15px,2vw,30px);
    }
    
}

@media (max-width:768px){
.banner-con .banner .banner-left{
    padding-top: 0;
}
.advantage-con .advantage .left-right-con,.principle-con .principle .left-right-con{
    flex-direction: column;
}

.advantage-con .advantage .right-con,.principle-con .principle .right-con,.advantage-con .advantage .left-con{
    max-width: 100%;
}
}

@media (max-width:600px){
    .banner-con .banner .banner-left .ul-con{
        height: auto;
    }
    .banner-con .banner .banner-left .ul-con ul{
        flex-wrap: wrap;
        position: static;
    }
    
    .banner-con .banner .banner-left ul li{
        flex: auto;
        width: 50%;
    }
}