.banner {
    width: 100%;
    padding-bottom: 20.83%;
    position: relative;
    z-index: 1;
    background-color: #c9dfef;
}

.banner a {
    display: block;
    width: 100%;
    position: absolute;
    width: 100%;
    left: 0;
    top: 0;
}

.banner a  picture{
    display: block;
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
}

.banner a  picture source{
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
}

.banner img {
    width: 100%;
}

.topic-container h1{
    padding-top: 0;
}
                   

.topic-container h1 {
color: #2a2a2a;
font-size: .26rem;
line-height: .35rem;
margin-bottom: .25rem;
}


/* #topic-container-1 begin*/

.topic-container h1 {
margin-bottom: 0;
}


.app-wrapper{
    width: 100%;
    padding-bottom: 63.8%;
    position: relative;
    box-shadow: 0px 0px 10px 2px rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    margin-bottom: .8rem;
}

.app-wrapper img{
    width: 100%;
    position: absolute;
    left: 0;
    top: 0;
}

.topic-container-title{
    width: 100%;
    margin-bottom: .4rem;
}

.topic-container-title h1{
    color: #2a2a2a;
    font-size: .34rem;
    line-height: .4rem;
    position: relative;
    width:auto;
}

.topic-container-title h1::before{
    content: "";
    width: 5px;
    height: 65%;
    background-color: #5dcef4;
    position: absolute;
    left: -.4rem;
    top: .05rem;
}

.topic-container-title h1::after{
    content: "";
    width: 5px;
    height: 65%;
    background-color: #5dcef4;
    position: absolute;
    right: -.4rem;
    top: .05rem;
}

.topic-container-title  p{
    font-size: .16rem;
    line-height: .2rem;
    color: #2a2a2a;
    
}

.topic-container h1{
    padding-bottom: .1rem;
}

.products-recommended{
    position: relative;
}

.recommended-bg{
    width:4rem;
    height: 40px;
    background-image: url("../images/bg.png");
    background-repeat: no-repeat;
    position: absolute;
    left: 0;
    top: -.29rem;
    z-index: 1;
    text-align: left;
    background-size: contain;
   
}

.recommended-bg h2{
    display: inline-block;
    width: 100%;
    box-sizing: border-box;
    color:#ffffff;
    font-size: .22rem;
    line-height: 40px;
    font-weight: 500;
    position: absolute;
    padding: 0 0 0 15%;
    text-align: left;
}


.products-wrapper{
    width: 100%;
    background-color: #f3fafe;
    padding-top: .5rem;
    padding-bottom: .2rem;
    box-shadow: 0px 0px 10px 2px rgba(0, 0, 0, 0.1);
}

.products-wrapper ul{
    width: 100%;
    display: block;
}

.products-wrapper ul li{
    box-sizing: border-box;
    float:left;
    width: 17.5%;
    position: relative;
    border: 1px solid #a0c2e6;
    border-radius:10px;
    padding:.1rem 0;
    position: relative;
    margin: .15rem 1.2%;
}

.products-wrapper ul li h3{
    width: 84%;
    color: #003652;
    font-size: .15rem;
    font-weight: 600;
    position: absolute;
    left:8%;
    top:-.15rem;
     background-color: #f3fafe;
}


.products-wrapper ul li h3::before{
    content: "";
    width: 5px;
    height: 5px;
    border: 1px solid #a0c2e6;
    border-radius: 50%;
    position: absolute;
    left:0;
    top: 50%;
    margin-top: -1.5px;
}
.products-wrapper ul li h3::after{
    content: "";
    width: 5px;
    height: 5px;
    border: 1px solid #a0c2e6;
    border-radius: 50%;
    position: absolute;
    right:0;
    top: 50%;
    margin-top: -1.5px;
}

.products-wrapper ul li p{
    color: #4a4b4b;
    font-size: .14rem;
}

.elec-part{
    color: #003652;
    width: 60%;
    border: 1px solid #a0c2e6;
    border-radius:8px;
    position: absolute;
    left: 20%;
    bottom: -.12rem;
    background-color: #ffffff;
    font-size: .14rem;
}

/* #topic-container-1 end */


.document-wrapper {
    text-align: center;
    margin: .5rem 0;
}

.document-wrapper .topic-container-title h2 {
    display: inline-block;
    color: #2a2a2a;
    font-size: .34rem;
    line-height: .4rem;
    position: relative;
    width: auto;
    padding-bottom: .1rem;
}


.document-wrapper .topic-container-title h2::before {
    content: "";
    width: 5px;
    height: 65%;
    background-color: #5dcef4;
    position: absolute;
    left: -.4rem;
    top: .05rem;
}


.document-wrapper .topic-container-title h2::after {
    content: "";
    width: 5px;
    height: 65%;
    background-color: #5dcef4;
    position: absolute;
    right: -.4rem;
    top: .05rem;
}
.doc-list{
    width: 90%;
    margin: 0 auto;
}

.doc-list-l{
    float: left;
}

.doc-list-r{
    float: right;
}

.doc-list-l,
.doc-list-r{
    width: 50%;
}

.doc-list a{
   display: block;
   box-sizing: border-box;
   width: 100%;
   font-size: .16rem;
   line-height: .2rem;
   color: #252525;
   text-align: left;
   margin-bottom: .1rem;
   padding-left: 24px;
   position:relative;
   transition:all .2s linear;
}

.doc-list a::after{
    content: "";
    width: 18px;
    height: 20px;
    background-image: url("../images/icon-a.png");
    position:absolute;
    left: 0;
    top: 0;
    background-position: 0 0;
    background-repeat: no-repeat;
}

.doc-list a:hover{
    color: #3eadd2;
}

.doc-list a:hover::after{
    background-position: -20px 0;
}






@media screen and (max-width:1000px) {
    .products-wrapper ul li {
        width: 30%;
        position: relative;
        border: 1px solid #a0c2e6;
        border-radius: 10px;
        padding: .1rem 0;
        position: relative;
        margin: .3rem 1.6%;
    }
}




@media screen and (max-width:750px) {
.banner {
    padding-bottom: 69.6%;
}

.topic-container h1,.document-wrapper .topic-container-title h2 {
    font-size: .24rem;
    line-height: .3rem;
    margin-bottom: 0rem;
    padding-top: 0;
}


.topic-container h2{
    padding-top: 0;
    padding-bottom: 0;
}


.products-wrapper ul li {
    width: 45%;
    margin: .25rem 2.5%;
}


.products-recommended h2{
    width:80%;
    font-size:.18rem;
}
.recommended-bg {
    width:100%;
    background-size: contain;
}

.doc-list {
    width: 100%;
}
.doc-list-l, .doc-list-r {
    width: 100%;
}

.topic-container-title p {
    font-size: .14rem;
    line-height: .18rem;
}
}