body {
    margin: 0;
}
.container{
    font-family: MicrosoftYaHei;
    align-items: center;
    margin: 0 auto;
    width: 100%;
}

nav{
 list-style: none;
}
.navbar-default .navbar-toggle .icon-bar{
    background: #0062FFFF;
}
.navbar-toggle{
    background: white;
}
.navbar{
    width: 100%;
    display: flex;
    justify-content: center;
    background: #FFFFFF;
    margin-bottom: 0;
}
.navbar-box{
    width: 1200px;
    height: 70px;
    line-height: 70px;
}
#navbar-collapse{
    background: #FFFFFF;
}
.header-left-content{
    margin-left: 20px;
    margin-right: 20px;
    height: 70px;
    line-height: 70px;
}
.navbar-header{
    height: 70px;
    line-height: 70px;
    align-items: center;
}

.header-wrapper {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}
.navbar-left, .navbar-right{
    align-items: center;
}
.navbar-left>li,.navbar-right>li{
    display: flex;
    align-items: center;
    height: 70px;
    line-height: 70px;
}
.header {
    width: 1200px;
    height: 70px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-direction: row;
    flex-wrap: nowrap;
}

.header-left {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 368px;
    font-size: 16px;
}

.header-left-content {
    font-size: 20px;
    font-weight: bold;
    color: #303133FF;
}
.navbar-toggle{
    top: 25%;
    margin-top: 0px;
}
.header-left-content>span {
    padding-top: 3px
}

.header-right {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 590px;
    font-size: 16px;
    list-style: none;
}

.login-btn {
    background: #0062FFFF;
    border-radius: 8px;
    border: none;
    width: 111px;
    height: 40px;
    color: white;
}

.login-btn:focus {
    border: 0 none;
    outline: none;
}

.login-btn:hover {
    background-color: #4788f1;
}

.reg-btn {
    border-radius: 8px;
    border: none;
    width: 110px;
    height: 40px;
}

.reg-btn:focus {
    border: 0 none;
    outline: none;
}

.reg-btn:hover {
    background-color: #dfdfdf;
}

.first-containner{
    background: url('../bg.png');
    background-size: 100% 100%;
    background-repeat: no-repeat;
    justify-content: center;
   text-align: center;
}
.first-containner-download{
    justify-content: center;
    margin: 0 auto;
}
.first-containner-download .download{
    display: flex;
    justify-content: space-between;
    margin: 0 auto;
}
.btn{
    background: white;
    color: #337ab7;
}
.btn:focus {
    border: 0 none;
}
.download_item {
    position: relative;
    background: white;
    border-radius: 12px;
    cursor: pointer;
    justify-content: center;
    text-align: center;
    /*overflow: hidden;*/
}

.download_item_img {
    width: 100%;
    height: 100%;
}

.download_item_img2 {
    display: none;
}

.download_item_span {
    position: relative;
    color: #303133FF;
    top: -45px;
    font-size: 12px;
}

.download_item_span2 {
    display: none;
}

.download_item_img3 {
    display: none;
}

.download_item:hover .download_item_img {
    display: none;
}

.download_item:hover .download_item_span {
    display: none;
}
.download_item:hover .download_item_span2 {
    display: block;
    position: relative;
    color: #303133FF;
    bottom: 40px;
    font-size: 12px;
}

.download_item:hover .download_item_img3 {
    width: 100%;
    height: 100%;
    display: block;
    border-radius: 8px;
}

.item_img {
    width: 110px;
    height: 110px;
}
.content-second {
    background: rgb(252, 252, 253);
    height: 500px;
    display: flex;
    justify-content: center;
    margin: 0 auto;
    padding-top: 100px;
}

.content-second-left {
    padding-right: 100px;
}

.content-second-left-title {
    position: relative;
    top: -50px;
    font-size: 32px;
    font-weight: 700;
    left: 60px;
}

.content-second-left-content {
    position: relative;
    width: 379px;
    top: -30px;
    left: 60px;
    line-height: 32px;
}



.content-third {
    height: 600px;
    display: flex;
    justify-content: center;
    margin: 0 auto;
}

.content-third-left {
    margin-top: 60px;
}
.img1-wrapper{
    position: relative;
    margin-top: 20px;
}

.content-third-right {
    margin-top: 120px;
}

.content-third-right-title {
    font-size: 32px;
    font-weight: 700;
}

.content-third-right>ul {
    width: 429px;
    height: 300px;
    padding-top: 20px
}

.content-third-right>ul>li {
    font-size: 25px;
}

.content-third-right>ul>li>span {
    font-size: 14px;
    line-height: 32px
}

.content-fourth {
    position: relative;
    background: #ecf0f1;
    text-align: center;
    margin: 0 auto;
    padding-bottom: 75px;
}

.content-fourth-title {
    padding-top: 60px
}

.content-fourth-title>span {
    font-size: 32px;
    font-weight: 700;
}
ul li {
    list-style-type: square;
}

ul li::marker {
    color: #409EFFFF;
}
#guide{
	display: none;
	width: 100%;
}
.guide-box{
	background: black;
	color: #606266;
	padding: 15px 30px;
	font-size: 15px;
	font-weight: 400;
	display: flex;
	justify-content: flex-end;
	width: 100%;
}
.guide-box >img{
	width: 22px;
	height: 26px;
}
.group {
    padding-top: 60px;
    display: flex;
    justify-content: space-between;
    max-width: 1140px;
    min-width: 300px;
    margin: 0 auto;
}

.group-item {
    background: white;
    width: 210px;
    height: 270px;
    padding: 0 20px;
    border-radius: 8px;
    overflow: hidden;
}

.group-item-title {
    font-size: 16px;
    color: #303133FF;
    font-weight: 600;
}

.group-img {
    margin-top: 43px;
    margin-bottom: 23px;
    width: 64px;
    height: 64px;
    border-radius: 8px;
}

.group-item-content {
    position: relative;
    top: 12px;
    text-align: justify;
    font-size: 14px;
    color: #606266FF;
}

footer {
    display: flex;
    height: 80px;
    width: 100%;
    justify-content: center;
    line-height: 80px;
    font-size: 14px;
    color: #606266FF;

}

.footer-content {
    display: flex;
    width: 466px;
    justify-content: space-between;
}

.a1 {
    text-decoration: none;
    color: #303133FF;
}

.a1:hover {
    color: #0062FFFF;
}

.a {
    text-decoration: none;
    color: #409EFFFF;
}

.mac-download-dialog {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 2;
}

.mac-download-dialog .dialog-inner {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 736px;
    height: 624px;
    padding: 0 40px;
    border-radius: 12px;
    background: #fff;
    transform: translate(-368px, -312px);
}

.mac-download-dialog .heading {
    margin: 56px 0 24px;
    font-family: PingFangSC-SNaNpxibold;
    font-weight: 600;
    font-size: 28px;
    line-height: 40px;
    color: #262626;
    text-align: center;
}

.mac-download-desc {
    margin-bottom: 20px;
    font-family: PingFangSC-Regular;
    font-weight: 400;
    font-size: 14px;
    line-height: 20px;
    color: #606266;
}

.mac-download-chip {
    padding: 24px 24px 20px 24px;
    margin-bottom: 32px;
    background: #F6F7F9;
    border-radius: 8px;
}

.mac-download-chip .chip-heading {
    margin: 0 0 16px;
    line-height: 25px;
    color: #303133;
    font-family: PingFangSC-Medium;
    font-weight: 500;
    font-size: 18px;
}

.mac-download-chip ol {
    padding: 0 0 0 15px;
}

.mac-download-chip .chip-text {
    margin: 0;
    padding: 0;
    text-indent: 0;
    font-size: 14px;
    color: #606266;
    line-height: 20px;
}

.mac-download-chip .chip-text strong {
    font-family: PingFangSC-Medium;
    font-weight: 500;
    color: #262626;
}

.mac-download-chip .chip-img {
    height: 120px;
    margin-bottom: 20px;
}

.chip-tips {
    margin-bottom: 0;
    font-family: PingFangSC-Regular;
    font-weight: 400;
    font-size: 12px;
    color: #909399;
}

.mac-download-buttons {
    display: flex;
}

.mac-download-buttons .button {
    flex: 1;
    border-radius: 8px;
    font-family: PingFangSC-Medium;
    font-weight: 500;
    font-size: 16px;
    background: #0080FF;
    color: #fff;
    border: 1px solid #0080FF;
    text-decoration: none;
    text-align: center;
    line-height: 48px;
    box-sizing: border-box;
}

.mac-download-buttons .button:hover {
    text-decoration: none;
}
.mac-download-buttons .button + .button {
    margin-left: 24px;
    color: #0080FF;
    background: #FFFFFF;
    border: 1px solid #0080FF;
}

.mac-download-close-button {
    position: absolute;
    top: 22px;
    right: 30px;
    width: 24px;
    height: 24px;
    border: none;
    font-size: 0;
    background: transparent;
}

.mac-download-close-button img{
    width: 24px;
    height: 24px;
}