.product-contect-box.active {display:block;}
.product-contect-box {padding:0px 20px;color:#666;font-size:16px;line-height:1.75;}
.product-contect-box .flex{margin-bottom:80px;}
.product-contect-box .flex .i-box:nth-child(1) {width:65%;padding:40px 60px;}
.product-contect-box .flex .i-box:nth-child(1) h3 {font-size:36px;font-weight:bold;color:#333;margin-bottom:36px;}
.product-contect-box .flex .i-box:nth-child(2) {width:35% ;padding:0;}
.product-contect-box .fright .i-box:nth-child(2) {order:-1}
.product-contect-box .play-box {max-width:1024px;margin:auto;}
.product-contect-box td {padding:20px 30px;}
.product-contect-box tr:nth-child(2n){background:#F5F5F5;}
.product-contect-box dl{border-bottom:1px solid #ddd;}
.product-contect-box dt {font-size:18px;padding:30px;display:flex;line-height:1.5;position:relative;color:#333;}
.product-contect-box dd {margin-bottom:30px;font-size:16px;padding:18px 60px;line-height:1.75;display:none;color:#666;}
.product-contect-box dt:before {content:"";display:inline-block;width:22px;height:22px;background:url(/images/down-icon.svg) center 4px no-repeat;margin-right:15px;transition:all .3s;}
.product-contect-box dt.active:before {transform:rotate(180deg);}
.product-contect-box  img {max-width: 100%;border: 0;}
.product-contect-box  .flex {display: flex;justify-content: space-between;}

/* 修复媒体查询 - 添加缺失的右括号 */
@media only screen and (max-width:768px) {
    .product-contect-box {display:block;padding:0px;}
    .product-contect-box .flex {flex-wrap:wrap;margin-bottom:0;}
    .product-contect-box .flex .i-box:nth-child(1)  {width:100%;padding:0;}
    .product-contect-box .flex .i-box:nth-child(2) {width:100%;padding:0;}
    .product-contect-box .flex .i-box:nth-child(1) h3 {font-size:24px;}
    .product-contect-box .fright .i-box:nth-child(2) {order:1;}
    .product-contect-box dt {padding:30px 0;font-size:16px;}
    .product-contect-box dd {font-size:14px;padding:20px;}
    .product-contect-box td {font-size:14px;padding:10px;}
}

@media only screen and (min-width:769px) and (max-width:900px) {
    .product-contect-box {padding:0px 0;}
    .product-contect-box .flex {margin-bottom:80px;}
    .product-contect-box .flex .i-box:nth-child(1) {width:60%;padding:0;}
    .product-contect-box .flex .i-box:nth-child(2) {margin-left:5%;}
    .product-contect-box .flex .i-box:nth-child(1) h3 {font-size:24px;}
    .product-contect-box .fright  .i-box:nth-child(2) {margin:0 5% 0 0;}
}

@media only screen and (min-width:901px) and (max-width:1368px) {
    .product-contect-box {padding:0px;}
    .product-contect-box .flex {margin-bottom:80px;}
    .product-contect-box .flex .i-box:nth-child(1) {width:60%;padding:0;}
    .product-contect-box .flex .i-box:nth-child(2) {margin-left:5%;}
    .product-contect-box .flex .i-box:nth-child(1) h3 {font-size:24px;}
    .product-contect-box .fright .i-box:nth-child(2) {margin:0 5% 0 0;}
}