*{ 
    margin: 0; 
    padding: 0;
    color:#fff;
}
a{
    text-decoration: none;
}
ul{
    list-style-type: none;
}
html{
    overflow-x: hidden;
}
body {
    overflow-x: hidden;
    position: relative;
}
.horizontal-line{
    display:inline-block;
    width:50px;
    border-top:1px solid #cccccc;
    vertical-align:5px; 
}
.vertical-line{
    display:inline-block;
    width: 1px;
    height: 25px; 
    background: #cccccc;
}
@media(max-width:768px){
    h3{
        font-size:20px;
    }
    h4{
        font-size: 16px;
    }
    p{
        font-size: 14px;
    }
}
.navbar-fixed-top{
    background:#262626;
}
.navbar-fixed-top > .container{
    /* padding:5px 0; */
}
.navbar .nav > li > a{
    color: #fff;    
}
.navbar .nav> li>a:hover {
    background: none;
    color:#fff;
}
.navbar .nav >.active>a{
    background: #df1111;
    color:#fff;
}
.navbar .nav >.active>a:hover{
    background: #df1111;
    color:#fff;
}
/* .navbar-brand{
    height: 50px;
    line-height: 50px;
    vertical-align: middle;
}
.navbar-brand img{
    width: 100%;
    object-fit: contain;
    line-height: 50px;
} */
.navbar-right .active{
    background:#e01111;
}
/* banner */
.carousel{
    margin-top:50px;
}
@media(max-width:768px){
    .carousel{
        margin-top:0;
    }
}
/* 智摩星介绍 */
.introduce-section{
    background:#262626;
}
.introduce-img{
    margin-top:100px;
    margin-bottom:100px;
}
.introduce-info{
    margin-top:150px;
}
#vertical-text{
    writing-mode:vertical-lr;
    margin-top:55px;
}
#vertical-text h3{
    margin-right: 10px;
}
.introduce-section img{
    width:100%;
    height: 100%;
}
@media(max-width:768px){
    .introduce-img{
        margin-top:30px;
        margin-bottom: 0;
    }
    .introduce-info{
        margin-top:20px;
    }
    #vertical-text{
        margin-top:30px;
    }
}
/* 产品功能 */
.product-section{
    background-image:url("./images/bg2.png");
}
.product{
    display: flex;
    align-items: center;
    margin-top: 105px;
    margin-bottom: 75px;
}
.product-pointer{
    width:20%;
    text-align: left;
}
.line-box{
    width:2%;
    /* margin-left:10px;
    margin-right:10px; */
    /* margin-right:-50px;
    margin-left:-85px; */
}
.product-detail-box{
    margin-bottom: 100px;
}
.product-detail{
    height: 230px;
    border:1px solid gainsboro;
    display: flex;
    justify-content: center;
    align-items: center;
}
.product-detail:not(:last-child) {
    margin-right:100px;      
}
.product-detail:hover{
    background: #d40000;
}
.front{
    /* position: absolute; 
    top: 50%; 
    left: 50%; 
    transform:translate(-50%,-50%); */
}
.reverse{
    display: none;
}
@media(max-width:768px){
    .product{
        margin-top:30px;
        margin-bottom: 30px;
    }
    .product-pointer{
        width: auto;
        text-align: left;
    }
    .product-detail-box{
        margin:0 auto;
    }
    .product-detail{
        height:200px;
        margin: 10px 0;
        padding:20px 0;
    }
    .reverse{
        display: block;
        background:none;
        text-align: center;
    }
}

/* 产品优势 */
.advantage-section{
    background:#262626;
}
.advantage{
    display: flex;
    align-items: center;
    margin-top:110px;
    margin-bottom:50px;
}
.advantage-detail-box{
    margin-top:-50px;
    background: #313131;
    margin-bottom:50px;
}
.advantage-detail{
    margin:50px 0;
}
.advantage-pointer{
    width:20%;
    text-align: left;
}
.advantage-detail img{
    width:50px;
    height:50px;
}
.advantage-detail h4{
    line-height:50px;
}
.label-bottom{
    line-height: 40px;
}
.correct{
    display:flex;
}
.correct img{
    margin-left:-10px;
    margin-right:10px;
}
.advantage-M-section{
    display: none;
}
@media(max-width:768px){
    .advantage-section{
        display: none;
    }
    .advantage-M-section{
        display: block;
        background:#262626;
        padding:50px 0;
    }
    .advantage-M{
        margin-bottom:40px;
        display: flex;
        align-items: center;
    }
    .advantage-M-detail-box{
        background: #313131;
        margin:0 auto;
    }
    .advantage-M-detail{
        margin-top:30px;
        margin-bottom:30px;
    }
    .advantage-M-detail img{
        height: 30px;
        width: 30px;
        line-height: 50px;
    }
    .label-M-bottom{
        line-height: 30px;
        margin:0 auto;
    }
    .correct{
        margin:0 auto;
    }
}
/* 安装指导 */
.install-section{
    background-image:url("./images/bg1.png");
}
.install{
    display: flex;
    align-items: center;
}
.video-box{
    height:380px;
}
.install-pointer{
    width:20%;
    text-align: left;
}
.line-box2{
    margin-left:-50px;
    margin-right:-60px;
}
.video-box{
    position: relative;
    width: 100%;
    height:350px;
}
#video{
    display: inline-block;
    vertical-align: baseline;
    width: 100%;
}
.video-img{
    position: absolute;
    left:0;
    top:0;  
    right: 0; 
    bottom: 0; 
    margin: auto;
    width:50px;
    height:50px;
    Z-index:999;
    background:url('./images/play.png') no-repeat;
    background-size: 100% 100%;
    cursor: pointer;
}
.index{
    line-height: 150px;
}
.pointer-line{
    display:inline-block;
    width:100px;
    border-top:1px solid #cccccc;
    vertical-align:5px; 
}
@media(max-width:768px){
    .install{
        margin-top:50px;
        margin-bottom:30px;
    }
    .video-box{
        height:220px;
    }
    .install-pointer{
        width:auto;
        text-align: left;
    }
}
/* footer */
footer{
    background:#262626;
    font-size:12px;
    padding:10px;
    color:#dedede;
}
footer a:hover{
    color:#df1111;
    text-decoration: none;
}
.contacus{
    text-align: left;
}
.copy{
    text-align: right;
}
.copy a{
    font-size:12px;
    color:#fff;
}
footer ul li{
    line-height:30px;
}
@media(max-width:768px){
    .contactus{
        text-align: center;
    }
    footer ul li{
        line-height:20px;
    }
    .copy{
        text-align: center;
    }
}