html,
body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", "Microsoft Yahei", sans-serif;
}

body {
    background: #fff;
}

.the_head {
    background: url(../images/head.png) top/contain no-repeat;
    height: 52vw;
}

.top_menu {
    background: rgba(66, 67, 255, .96);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 120px;
    z-index: 9;
}

.top_menu .skin {
    position: relative;
    width: 1200px;
    margin: 0 auto;
}

.top_menu .head {}

.top_menu .menu {
    position: absolute;
    top: 40px;
    left: 320px;
}

.top_menu .menu li {
    list-style: none;
    display: inline-block;
    color: #fff;
    padding: 0 20px;
    font-size: 20px;
}

.top_menu .menu li a {
    text-decoration: none;
    color: rgba(255, 255, 255, .6);
}

.top_menu .menu li span {
    display: none;
    height: 3px;
    width: 50%;
    margin: 6px auto 0;
    background: #fff;
    text-align: center;
    border-radius: 1.5px;
}

.top_menu .menu li.sel span {
    display: block;
}

.top_menu .menu li.sel a {
    color: rgba(255, 255, 255, 1);
    font-weight: bold;
}

.the_head .btn_contact {
    position: absolute;
    width: 100%;
    margin: 0 auto;
    top: 35vw;
    text-align: center;
}

/*************/
.top_menu .lang {
    position: absolute;
    top: 40px;
    right: 0px;
}

.top_menu .lang li {
    list-style: none;
    display: inline-block;
    color: #fff;
    padding: 0 4px;
    font-size: 20px;
}

.top_menu .lang a {
    color: rgba(255, 255, 255, .7);
    text-decoration: none;
}

.top_menu .lang strong {
    color: rgba(255, 255, 255, .3);
    font-weight: normal;
}

/*************************/
.the_product {
    width: 100%;
    margin: 0 auto;
    overflow: hidden;
}


/*************************/
.the_services {
    background: url(../images/services.png) center/contain no-repeat;
    height: 49vw;
}


/*************************/
.the_intro {
    background: url(../images/intro.png) center/contain no-repeat;
    height: 62.5vw;
}


/*************************/
.the_boss {
    background: url(../images/boss.png) center top no-repeat;
    height: 800px;
}

/*************************/
.the_contact {
    position: relative;
    background: url(../images/contact.png) center/contain no-repeat;
    height: 58vw;
}

.the_contact .btn_mail {
    position: absolute;
    width: 12.5vw;
    height: 4.4vw;
    text-align: left;
    bottom: 7.3vw;
    left: 4.4vw;
}

/******************/
.footer {
    height: 70px;
    background: center 70% no-repeat #3b4866;
    /* background: url(../images/fg.png) center 70% no-repeat #3b4866; */
    padding: 40px 0;
    text-align: center;
    color: #fff;
}

.footer .menu {
    border-bottom: 1px solid #4f5b76;
    width: 100%;
    margin: 0 auto;
}

.footer .menu li {
    display: inline-block;
    text-align: center;
    padding: 0 20px;
    color: #fff;
}

.footer .icp,
.footer .icp a {
    color: rgba(255, 255, 255, .4);
}



/**********************/

.wrap {
    height: 900px;
    width: 100%;
    margin: 0 auto;
    overflow: hidden;
    position: relative;
}

.wrap ul {
    position: absolute;
    margin: 0;
    padding: 0;
    width: 100%;
    overflow: hidden;
    text-align: center;
}

.wrap ul li {
    height: 900px;
    list-style: none;
    margin: 0 auto;
    padding: 0;
    text-align: center;
}

.wrap ol {
    position: absolute;
    left: 40%;
    bottom: 10px;
    list-style: none;
}

.wrap ol li {
    height: 24px;
    width: 24px;
    background: #f3f3f3;
    border: solid 1px #d0d0d0;
    margin-left: 5px;
    color: #333;
    float: left;
    line-height: center;
    text-align: center;
    cursor: pointer;
}

.wrap ol .on {
    background: #494aff;
    border: solid 1px #4445f3;
    color: #fff;
}