.header-container{
    width: 100%;
    height: 700px;
}

.header-nav {
    width: 100%;
    height: 72px;
    border-bottom: 1px solid #FFFFFF;
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    position: fixed;
    top: 0;
    z-index: 1;
}

.header-nav>div {
    height: 100%;
}



.header-nav .logo {
    padding-top: 19px;
}

.header-nav .logo>a {
    overflow: hidden;
    float: left;
    font-size: 20px;
    color: #FFFFFF;
    line-height: 38px;
}

.header-nav .logo img {
    width: 42px;
    display: block;
    height: 100%;
}

.header-nav-box{
    padding-top: 19px;
    height: 48px;
}

/* 头部导航链接 */
.header-nav-box .nav-box>div{
    line-height: 52px;
    color: #FFFFFF;
    text-decoration: none;
    padding: 0 30px;
    font-size: 18px;
    margin-bottom: 6px;
}
.header-nav-box .nav-box>span{
    line-height: 52px;
    color: #FFFFFF;
    font-size: 18px;
}
.header-nav-box .nav-box>div>a{
    display: block;
    height: 45px;
}

.header-nav-box .nav-box>div.active>a{
    font-size: 22px;
    border-bottom: 2px solid #FFFFFF;
}
.header-nav-box .nav-box>a:hover{
    font-size: 22px;
}

.banner{
    height: 628px;
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
}

.banner .banner-phone{
    width: 500px;
    height: 405px;
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    margin-top: 100px;
}
.banner .banner-content{
    margin-top: 100px;
    margin-left: 50px;
    color: #FFFFFF;
    width: 650px;
}
.banner .banner-content .banner-slogan{
    font-size: 46px;
    text-align: center;
}
.banner .erweima-box .erweima{
    width: 220px;
    height: 220px;
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    margin: 0 auto;
}
.banner .erweima-box .download-btn{
    display: block;
    width: 330px;
    height: 60px;
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
}
.section-one .product-box{
    position: relative;
    margin-top: 41px;
    height: 589px;
    overflow: hidden;
}
.product-img{
    width: 737px;
    height: 589px;
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    position: absolute;
}
.section-one .product-box .tv{
    width: 103px;
    height: 103px;
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    position: absolute;
    left: 702px;
    top: 79px;
}
.section-one .product-box .line{
    width: 236px;
    height: 118px;
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    position: absolute;
    left: 786px;
    top: 168px;
}
.section-one .product-box .touping{
    position: absolute;
    left: 809px;
    top: 288px;
}
.section-one .product-box .touping-text{
    position: absolute;
    left: 889px;
    top: 368px;
    font-size: 32px;
}
.section-second{
    width: 100%;
    height: 498px;
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
}
.section-second .ting-box{
    margin-top: 210px;
    line-height: 64px;
    text-align: center;
}
.section-second .ting-line{
    width: 325px;
    height: 42px;
    margin-top: 258px;
    margin-left: -50px;
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
}
.section-second .ting-img{
    width: 592px;
    height: 370px;
    margin-top: 51px;
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
}
.section-three .preview-img{
    width: 712px;
    height: 583px;
    margin-top: 77px;
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
}
.section-three .preview-line{
    width: 230px;
    height: 26px;
    margin-top: 314px;
    margin-left: -20px;
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
}
.section-three .preview-box{
    margin-top: 270px;
    line-height: 64px;
    text-align: center;
    margin-left: 20px;
}
.section-four .area-box{
    margin-top: 269px;
    text-align: center;
}
.section-four .area-box .line{
    width: 279px;
    height: 120px;
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    margin-left: 200px;
}
.section-four .area-img{
    width: 708px;
    height: 550px;
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
}
.about .about_title{
    border-bottom: 1px solid #979797;
    line-height: 90px;
    width: 260px;
    margin-bottom: 20px;
    margin-top: 20px;
}
.about .icon{
    display: inline-block;
    width: 48px;
    height: 48px;
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    vertical-align: middle;
    margin-right: 20px;
}
.about p{
    line-height: 48px;
    font-size: 32px;
}
footer{
    background-color: #0C0C0C;
    color: #FFFFFF;
    line-height: 48px;
}