/* http://meyerweb.com/eric/tools/css/reset/ 
   v2.0 | 20110126
   License: none (public domain)
*/

html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed, 
figure, figcaption, footer, header, hgroup, 
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
	margin: 0;
	padding: 0;
	border: 0;
	font-size: 100%;
	font: inherit;
	vertical-align: baseline;
}
/* HTML5 display-role reset for older browsers */
article, aside, details, figcaption, figure, 
footer, header, hgroup, menu, nav, section {
	display: block;
}
body {
	line-height: 1;
}
ol, ul {
	list-style: none;
}
blockquote, q {
	quotes: none;
}
blockquote:before, blockquote:after,
q:before, q:after {
	content: '';
	content: none;
}
table {
	border-collapse: collapse;
	border-spacing: 0;
}
a{
    text-decoration:none
}

.bg img{
    width: 100%;
    position: absolute;
    top: 0;
    left: 0;
}
.nav{
    position: fixed;
    width: 100%;
    height: 80px;
    z-index: 2;
    /* background: rgb(255, 255, 255); */
}
.nav-box{
    width: 88%;
    margin: 0 auto;
    margin-top: 18px;
    display: flex;
    justify-content: space-between;
}
.nav img{
    width: 50px;
}
.nav-tab{
    display: flex;
    margin-top: 18px;
}
.nav-tab h4{
    font-size: 16px;
    margin-left: 88px;
    color: #4d525a;
    cursor: pointer;
    transition: all 0.3s;
    /* 过度 */
    -moz-transition: all 0.3s;
    /* Firefox */
    -webkit-transition: all 0.3s;
    /* Safari 和 Chrome */
}
.nav-tab h4:hover{
    color: #12AAFF;
}
.content-box1{
    position: relative;
    z-index: 1;
    width: 88%;
    height: 900px;
    margin: 0 auto;
    padding-top:180px;
    display: flex;
    justify-content: space-between;
    
}
.content-box1-left{
    margin-left: 20px;
}
.content-box1-left h1{
    font-size: 66px;
    font-weight: 600;
    color: #1F1F1F;
}
.content-box1-left h2{
    font-size: 66px;
    font-weight: 600;
    color: #37A9FF;
    margin-top: 38px;
}
.content-box1-left h3{
    font-size: 22px;
    font-weight: 500;
    color: #B8B8B8;
    margin-top: 68px;
    width: 680px;
    line-height: 36px;
}

.content-box1-right img{
    margin-top: -68px;
    height: 880px;
}
.content-box2{
    width: 92%;
    margin: 0 auto;
    margin-top: -138px;
    padding-bottom: 22px;
    border-radius: 30px;
    background: #F6FBFF;
    text-align: center;
}
.content-box2 img{
    width: 68%;
    margin-top: 38px;
}
.content-box2 h3{
    font-size: 38px;
    font-weight: 600;
    padding-top: 38px;
}
.content-box2 h4{
    font-size: 28px;
    margin-top: 28px;
}
.content-box3{
    width: 92%;
    margin: 0 auto;
    margin-top: 32px;
    border-radius: 30px;
    background: #F6FBFF;
    text-align: center;
}
.content-box3-img{
    display: flex;
    justify-content: space-between;
    width: 76%;
    margin: 0 auto;
    margin-top: 66px;
}
.content-box3 h4{
    font-size: 28px;
    margin-top: 28px;
}
.content-box3 h3{
    font-size: 38px;
    font-weight: 600;
    padding-top: 38px;
}
.content-box3-left{
    width: 866px;
    height: 446px;
    border-radius: 20px;
    background: linear-gradient(89.78deg, #52D5FF 0.21%, #4EB7FF 99.82%);
}
.content-box3-left img{
    width: 818px;
    border-radius: 10px;
    outline: 10px solid #fff;;
    margin-top: 24px;
}
.content-box3-right img{
    width: 520px;
    margin-top: -38px;
}
.content-box4{
    width: 92%;
    margin: 0 auto;
    margin-top: 32px;
    padding-bottom: 22px;
    border-radius: 30px;
    background: #F6FBFF;
    text-align: center;
}
.content-box4 img{
    width: 68%;
    margin-top: 38px;
}
.content-box4 h3{
    font-size: 38px;
    font-weight: 600;
    padding-top: 38px;
}
.content-box4 h4{
    font-size: 28px;
    margin-top: 28px;
}
.down-box{
    width: 316px;
    height: 68px;
    margin-top: 88px;
    border-radius: 20px;
    background: linear-gradient(270deg, #28A5FF 0%, #48B2FF 100%);
}
.down-box span{
    display: block;
    width: 115px;
    border-radius: 20px 0px 0px 20px;
    height: 45px;
    text-align: center;
    font-size: 20px;
    color: #fff;
    padding-top: 23px;
    cursor: pointer;
    transition: all 0.3s;
    /* 过度 */
    -moz-transition: all 0.3s;
    /* Firefox */
    -webkit-transition: all 0.3s;
    /* Safari 和 Chrome */
}
.down-box span:hover{
    background: #1fa2ff;
}
.down-box span:hover{
    color: #e5eeff;
}
.partition{
    width: 1.5px;
    height: 32px;
    margin-left: 115px;
    margin-top: -50px;
    background: #fff;
}
.down-bottom{
    display: flex;
    margin-left: -60px;
    margin-top: 38px;
}
.down-bottom img{
    cursor: pointer;
    width: 360px;
    transition: all 0.3s;
    /* 过度 */
    -moz-transition: all 0.3s;
    /* Firefox */
    -webkit-transition: all 0.3s;
    /* Safari 和 Chrome */
}
.down-bottom img:hover{
    transform: scale(1.05);
}
.pan{
    width: 199px;
    height: 68px;
    float: right;
    margin-left: 10px;
    margin-top: -50px;
    border-radius: 0px 20px 20px 0px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    /* 过度 */
    -moz-transition: all 0.3s;
    /* Firefox */
    -webkit-transition: all 0.3s;
    /* Safari 和 Chrome */
}
.pan:hover{
    background: #1fa2ff;
}
.pan h5{
    margin-top: 12px;
    font-size: 20px;
    color: #fff;
}
.pan h6{
    font-size: 13px;
    color: #dae9ff;
    margin-top: 10px;
}
.content-box5{
    width: 92%;
    margin: 0 auto;
    height: 360px;
    padding-bottom: 22px;
    border-radius: 30px;
    background: #F6FBFF;
    text-align: center;
    margin-top: 32px;
}
.content-box5 h3{
    font-size: 42px;
    letter-spacing: 0.24em;
    font-weight: 600;
    padding-top: 58px;
    color: #1F1F1F;
}
.bottom-down{
    width: 42%;
    height: 50px;
    margin: 0 auto;
    margin-top: 68px;
    display: flex;
    justify-content: space-between;
}
.bottom-down span{
    width: 138px;
    height: 60px;
    border-radius: 15px;
    background: #151515;
}

.bottom-down span:hover{
    cursor: pointer;
    transition: all 0.3s;
    /* 过度 */
    -moz-transition: all 0.3s;
    /* Firefox */
    -webkit-transition: all 0.3s;
    /* Safari 和 Chrome */
    transform: scale(1.05);
}
.copyright{
    margin-top: 118px;
    font-size: 14px;
    color: #1F1F1F;
}