html,
body {
    width: 100%;
    height: 100%;
    overflow: auto;
    /* font-family: FZLTzhonghei, FZLTcuhei, FZLTxihei; */
    overflow: auto;
    /* 溢出需要可滚动 */
    scrollbar-width: none;
    /* Firefox隐藏滚动条 */
    -ms-overflow-style: none;

    /* Internet Explorer 10+隐藏滚动条 */
    ::-webkit-scrollbar {
        width: 0;
        /* Safari,Chrome 隐藏滚动条 */
        height: 0;
        /* Safari,Chrome 隐藏滚动条 */
        display: none;
        /* 移动端、pad 上Safari，Chrome，隐藏滚动条 */
    }
}

.index-content {
    width: 100%;
    height: 100%;
}

.index-header {
    position: absolute;
    z-index: 99;
    top: 2.7vw;
    background-color: rgba(0, 0, 0, 0.2) !important;
}


/* .index-content .index-header {
	width: 100%;
	height: 8.697vw;
	background-color: #23211E;
	padding: 1.927vw 3.54vw 4.53vw 4.32vw;
	box-sizing: border-box;
	display: flex;
}

.index-content .index-header .index-header-logo {
	width: 11.4vw;
	height: 1.51vw;
	box-sizing: border-box;
	margin-top: 0.416vw;
}

.index-content .index-header ul:nth-child(2) {
	list-style-type: none;
	margin-left: 18.95vw;
}

.index-content .index-header ul:nth-child(2) li {
	float: left;
	color: #FFFFFF;
	text-align: center;
	box-sizing: border-box;
	padding: 0.52vw 1.5265vw;
	margin-right: 1.58vw;
	font-family: FZLTxihei;
	font-size: 1vw;
}

.index-content .index-header ul:nth-child(2) .active {
	color: #000000;
	background: #FFFFFF;
	border-radius: 1.09vw;
}

.index-content .index-header ul:nth-child(3) {
	list-style-type: none;
	margin-left: 1vw;
}

.index-content .index-header ul:nth-child(3) li {
	float: left;
	color: #FFFFFF;
	text-align: center;
	box-sizing: border-box;
	padding: 0.52vw 0.5265vw;
	margin-right: 2vw;
	font-family: FZLTcuhei;
	font-style: italic;
}

.index-content .index-header ul:nth-child(3) .active {
	color: #f00001;
}

 */


/* .video {
	width: 100%;
	height: 50vw;
	margin-top: -2.7vw;
} */

.build-img {}

.video {
    width: 100%;
    height: 60.88vw;
    position: relative;
    margin-top: -2.7vw;
}

.index-content .first-screen {
    width: 100%;
    height: 48.95vw;
    background-image: url(https://files.yidatec.com/img/bg-bottom.jpg);
    background-size: 100% 100%;
    margin-top: -2.7vw;
    /* padding: 9.53vw 6.09vw;
	box-sizing: border-box; */
    overflow: hidden;
    position: relative;
    perspective: 500;
    -webkit-perspective: 500;
}

.build-img {
    display: block;
    position: absolute;
    height: 100%;
    width: 100%;
    top: 0;
    right: 0;
}

.index-content .first-screen .first-title {
    position: absolute;
    z-index: 10;
    left: 6vw;
    top: 17vw;
    transition: all 1s;
    color: #282d32;
}

.index-content .first-screen .first-title p:nth-child(1) {
    font-size: 1.5625vw;
    font-weight: 400;
    /* color: #282D32; */
}

.index-content .first-screen .first-title p:nth-child(2) {
    font-size: 3.167vw;
    font-weight: 400;
    /* color: #282D32; */
    margin-top: 1.27vw;
}

.index-content .first-screen .first-title .line {
    width: 82px;
    height: 5px;
    background-color: #3580ff;
    margin-top: 2.5vw;
}


/* .index-content .first-screen img {
	width: 5.2vw;
	height: 0.3125vw;
	margin-top: 2.916vw;
} */

.index-content .first-screen .po-content {
    position: absolute;
    z-index: 10;
    left: 6vw;
    top: 28vw;
    transition: all 1s;
    opacity: 0;
    width: 34.26vw;
    font-size: 1.67vw;
    font-weight: lighter;
    font-weight: 400;
    color: #ffffff;
    margin-top: 5.6458vw;
    line-height: 2.86vw;
}

.index-content .second-screen {
    width: 100%;
    height: 60.88vw;
    /* margin-top: -2.86vw; */
    background-image: url(https://files.yidatec.com/img/bg-2.png);
    background-size: 100% 100%;
    box-sizing: border-box;
}

.index-content .second-screen .second-screen-top {
    width: 100%;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.index-content .second-screen .second-screen-top .top-card {
    width: 24.5vw;
    height: 26vw;
    box-sizing: border-box;
    padding-top: 4.58vw;
    padding-left: 4.63vw;
}

.index-content .second-screen .second-screen-top .top-card p:nth-child(1) {
    font-size: 2.6vw;
    font-weight: bolder;
    font-weight: 400;
    color: #282d32;
}

.index-content .second-screen .second-screen-top .top-card p:nth-child(2) {
    margin-top: 2.58vw;
    font-size: 2.6vw;
    font-weight: bolder;
    font-weight: 400;
    color: #282d32;
}

.index-content .second-screen .second-screen-top .top-card img {
    width: 5.2vw;
    height: 0.3125vw;
    margin-top: 2.916vw;
}

.index-content .second-screen .second-screen-top .center-card {
    width: 24.5vw;
    height: 26vw;
    box-sizing: border-box;
    padding: 2.5vw 2.6vw 0 4.2vw;
    position: relative;
    color: #0f0f0f;
}

.top-active-img {
    width: 2.29vw;
    height: 2.29vw;
}

.index-content .second-screen .second-screen-top .center-card:nth-child(2) .top-active-img {
    width: 3.29vw;
    height: 2.29vw;
}

.index-content .second-screen .second-screen-top .center-card:nth-child(3) .top-active-img {
    width: 3.1vw;
    height: 2.29vw;
}

.index-content .second-screen .second-screen-top .center-card:nth-child(4) .top-active-img {
    width: 2.4vw;
    height: 2.4vw;
}

.index-content .second-screen .second-screen-top .center-card:nth-child(5) .top-active-img {
    width: 2.4vw;
    height: 2.1vw;
}

.index-content .second-screen .second-screen-top .center-card:nth-child(6) .top-active-img {
    width: 2.4vw;
    height: 2.4vw;
}

.index-content .second-screen .second-screen-top .center-card:nth-child(7) .top-active-img {
    width: 3.1vw;
    height: 2.1vw;
}

.index-content .second-screen .second-screen-top .center-card:nth-child(8) .top-active-img {
    width: 2.2vw;
    height: 2.4vw;
}

.index-content .second-screen .second-screen-top .center-card:hover {
    color: #ffffff;
    background-image: url(https://files.yidatec.com/img/index-rightBg.png);
    background-size: 100% 100%;
    padding: 1.5vw 2.6vw 0 4.2vw;
}

.index-content .second-screen .second-screen-top .center-card .balck-line {
    width: 2.65vw;
    height: 0.156vw;
    background: #212121;
}

.index-content .second-screen .second-screen-top .center-card .balck-line-active {
    display: none;
}

.index-content .second-screen .second-screen-top .center-card .center-title {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1.82vw;
    font-size: 1.56vw;
    font-weight: bolder;
    font-weight: 400;
}

.index-content .second-screen .second-screen-top .center-card .center-title-active {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 2vw;
    font-size: 1.56vw;
    font-weight: bolder;
    font-weight: 400;
}

.index-content .second-screen .second-screen-top .center-card .center-title .right-img-active {
    display: none;
}

.index-content .second-screen .second-screen-top .center-card .center-title .right-img {
    width: 1.82vw;
    height: 1.36vw;
}

.index-content .second-screen .second-screen-top .center-card .center-introduce {
    margin-top: 2.5vw;
    font-size: 1.04vw;
    font-weight: lighter;
    font-weight: 400;
    line-height: 2vw;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 5;
    -webkit-box-orient: vertical;

}

.index-content .second-screen .second-screen-top .center-card .center-introduce-active {
    margin-top: 1.2vw;
    color: #ffffff;
    font-size: 1.04vw;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 5;
    -webkit-box-orient: vertical;

}

.index-content .second-screen .second-screen-top .center-card .jumpToBtn {
    width: 3vw;
    height: 3vw;
    position: absolute;
    right: 1.718vw;
    bottom: 2vw;
}

.index-content .second-screen .second-screen-top .right-card {
    width: 24vw;
    height: 29vw;
    box-sizing: border-box;
    padding: 4.58vw 3.6vw;
    background-image: url(https://files.yidatec.com/img/index-rightBg.png);
    background-size: 100% 100%;
    position: relative;
}

.index-content .second-screen .second-screen-top .right-card img:nth-child(1) {
    width: 2.34vw;
    height: 2.29vw;
    margin-bottom: 3.02vw;
}

.index-content .second-screen .second-screen-top .right-card p:nth-child(2) {
    font-size: 1.5625vw;
    font-weight: bolder;
    font-weight: 400;
    color: #ffffff;
    margin-bottom: 1.72vw;
}

.index-content .second-screen .second-screen-top .right-card p:nth-child(3) {
    font-size: 1.04vw;
    font-weight: lighter;
    font-weight: 400;
    color: #ffffff;
    line-height: 2.5vw;
}

.index-content .second-screen .second-screen-top .right-card img:nth-child(4) {
    width: 3.6vw;
    height: 3.6vw;
    position: absolute;
    right: 3.6vw;
    bottom: 3vw;
}


/* .index-content .second-screen .second-screen-bottom {
	width: 100%;
	height: 27.79vw;
	display: flex;
	justify-content: space-between;
	box-sizing: border-box;

} */


/*  */


/* .index-content .second-screen .second-screen-bottom .center-card {
	width: 25%;
	height: 100%;
	box-sizing: border-box;
	padding: 0 2.9vw 4.2vw 2.9vw;
	position: relative;
}
.index-content .second-screen .second-screen-bottom .center-card:hover {
	color: #FFFFFF;
	background-image: url(https://files.yidatec.com/img/index-rightBg.png);
	background-size: 100% 100%;
}
.index-content .second-screen .second-screen-bottom .center-card .balck-line {
	width: 2.65vw;
	height: 0.156vw;
	background: #212121;
	margin-top: 3.64vw;
}

.index-content .second-screen .second-screen-bottom .center-card .center-title {
	width: 100%;
	display: flex;
	justify-content: space-between;
	align-items: center;
	margin-top: 1.82vw;
	font-size: 1.56vw;
	font-family: FZLTcuhei;
	font-weight: 400;
}

.index-content .second-screen .second-screen-bottom .center-card .center-title img {
	width: 1.82vw;
	height: 1.36vw;
}

.index-content .second-screen .second-screen-bottom .center-card .center-introduce {
	margin-top: 2.5vw;
	font-size: 1.04vw;
	font-family: FZLTxihei;
	font-weight: 400;
	line-height: 2vw;
}

.index-content .second-screen .second-screen-bottom .center-card .jumpToBtn {
	width: 3.69vw;
	height: 3.69vw;
	position: absolute;
	right: 3.6vw;
	bottom: 3vw;
} */


/*  */

.index-content .third-screen {
    width: 100%;
    height: 60vw;
    background-image: url(https://files.yidatec.com/img/bg-3.png);
    background-size: 100% 100%;
    margin-top: -2.86vw;
    padding: 4.63vw 16.67vw 10.15vw 16.67vw;
    box-sizing: border-box;
}

.index-content .third-screen .title {
    width: 100%;
    font-size: 2vw;
    font-weight: 400;
    color: #ffffff;
}

.index-content .third-screen .trun-right {
    width: 100%;
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.index-content .third-screen .trun-right img {
    width: 3.489vw;
    height: 3.489vw;
    margin-right: 1.2vw;
}

.index-content .third-screen .trun-right .trun-right-text {
    font-size: 1.5625vw;
    font-weight: lighter;
    font-weight: 400;
    color: #ffffff;
    display: none;
}

.index-content .third-screen .trun-right .trun-right-text-active {
    font-size: 1.5625vw;
    font-weight: lighter;
    font-weight: 400;
    color: #ffffff;
    display: block;
}

.index-content .third-screen .progressBar {
    width: 100%;
    height: 2px;
    background: #ffffff;
    margin-top: 1.458vw;
}

.index-content .third-screen .progressBar .background {
    width: 20%;
    height: 4px;
    background-color: #5a77f5;
    transition: all 0.5s;
}

.index-content .third-screen .content {
    width: 100%;
    height: 30.59vw;
    margin-top: 6.5625vw;
    display: flex;
    justify-content: space-between;
    overflow: hidden;
}

.index-content .third-screen .content .indicator {
    width: 2px;
    height: 25vw;
    background-color: #ffffff;
    margin-top: 2.14vw;
    margin-left: 1vw;
    margin-right: 1.5vw;
}

.index-content .third-screen .content .indicator .dot {
    width: 1.14vw;
    height: 1.14vw;
    border: 2px solid #ffffff;
    border-radius: 50%;
    margin-left: -0.6vw;
    margin-top: -1.3vw;
    z-index: 99;
    background-color: #ffffff;
}

.index-content .third-screen .content .indicator .dot:nth-child(2) {
    margin-top: 3.5vw;
}

.index-content .third-screen .content .indicator .dot:nth-child(3) {
    margin-top: 8.8vw;
}

.index-content .third-screen .content .indicator .dot:nth-child(4) {
    margin-top: 14vw;
}

.index-content .third-screen .content .indicator .dot:nth-child(5) {
    margin-top: 19.2vw;
}

.index-content .third-screen .content .indicator .dot:nth-child(6) {
    margin-top: 24.2vw;
}


/* .index-content .third-screen .content .indicator .line{
	width: 1px;
	height:6.61vw;
	background-color: #FFFFFF;
	
} */

.index-content .third-screen .content .content-left {
    width: 15.6vw;
    height: 100%;
}

.index-content .third-screen .content .content-left div {
    width: 100%;
    height: 5.2vw;
    text-align: left;
    color: #ffffff;
    font-size: 1vw;
    cursor: pointer;
}

.index-content .third-screen .content .content-left .content-title span {
    display: inline-block;
    width: 1.14vw;
    height: 1.14vw;
    border: 2px solid #ffffff;
    border-radius: 50%;
    margin-left: -0.6vw;
    margin-top: -1.3vw;
    z-index: 99;
}

.index-content .third-screen .content .content-left .content-title-active {
    font-size: 1.5625vw;
    font-weight: bolder;
}

.index-content .third-screen .content .content-right {
    width: 48.28vw;
    height: 100%;
}

.index-content .third-screen .content .content-right .content-box {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: space-between;
}

.index-content .third-screen .content .content-right .content-box-active {
    display: block !important;
}

.index-content .third-screen .content .content-right .content-box-left {
    position: relative;
}

.index-content .third-screen .content .content-right .content-box-left .left-item {
    display: none;
    box-sizing: border-box;
    padding: 2vw;
}

.index-content .third-screen .content .content-right .content-box-right {
    width: 25.57vwvw;
    height: 28.59vw;
    padding-right: 3.125vw;
    overflow: hidden;
    border-radius: 1.25vw;
}

.index-content .third-screen .content .content-right .content-box-right .scroll-img {
    width: 100%;
    height: 100%;
    transition: all 1s;
    border-radius: 1.25vw;
}

.index-content .third-screen .content .content-right .content-box-right .img-item {
    width: 100%;
    height: 100%;
    overflow: hidden;
    border-radius: 1.25vw;
}

.index-content .third-screen .content .content-right .content-box-right .img-item img {
    width: 100%;
    height: 100%;
    transform: scale(1.1);
    transition: all 1.3s;
    border-radius: 1.25vw;
}

.index-content .third-screen .content .content-right {
    width: 70.2vw;
    height: 100%;
    background-image: url(https://files.yidatec.com/img/card-1.png);
    background-size: 100% 100%;
}

.index-content .third-screen .content .content-right .title {
    font-size: 2.18vw;
    font-weight: bolder;
    font-weight: 400;
    color: #0f0f0f;
    z-index: 9;
}

.index-content .third-screen .content .content-right img:nth-child(2) {
    width: 2.55vw;
    height: 0.4125vw;
    margin-top: 0.729vw;
}

.index-content .third-screen .content .content-right .content-des {
    width: 21.45vw;
    margin-top: 1.56vw;
    font-size: 1.04vw;
    font-weight: lighter;
    font-weight: 400;
    color: #313131;
    line-height: 1.875vw;
    display: -webkit-box; 
    -webkit-box-orient: vertical;
    -webkit-line-clamp:7;
    overflow: hidden;

}

.index-content .third-screen .content .content-right .readMore {
    width: 7.78vw;
    height: 1.927vw;
    border-radius: 2.56vw;
    border: 1px solid #313131;
    text-align: center;
    line-height: 1.927vw;
    /* margin-top: 3.54vw; */
    font-size: 0.93vw;
    font-weight: lighter;
    font-weight: 400;
    color: #040404;
    display: flex;
    align-items: center;
    justify-content: space-around;
    box-sizing: border-box;
    padding: 0 0.7vw;
    position: absolute;
    bottom: 1.5vw;
    left: 2.13vw;
    cursor: pointer;
}

.index-content .third-screen .content .content-right .readMore:hover {
    background-color: #313131;
    color: #ffffff;
}

.index-content .third-screen .content .content-right .readMore img {
    width: 0.88vw;
    height: 0.57vw;
    margin-left: 0.4vw;
}

.index-content .four-screen {
    width: 100%;
    height: 63.3vw;
    background-image: url(https://files.yidatec.com/img/bg-4.png);
    background-size: 100% 100%;
    border-radius: 1.785vw 1.785vw 0 0;
    margin-top: -2.86vw;
    padding: 6.72vw 16.67vw 7.5vw 16.67vw;
    box-sizing: border-box;
}

.index-content .four-screen .title {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.index-content .four-screen .title .title-text {
    font-size: 2.6vw;
    /* font-weight: bolder; */
    font-weight: 400;
    color: #282d32;
}

.index-content .four-screen .title .four-screen-readMore {
    width: 9.375vw;
    height: 3.23vw;
    background-color: #313131;
    text-align: center;
    line-height: 3.23vw;
    border-radius: 2.56vw;
    font-size: 1.145vw;
    font-weight: lighter;
    font-weight: 400;
    color: #ffffff;
    cursor: pointer;
}

.index-content .four-screen .title .four-screen-readMore a {
    color: #ffffff;
    display: inline-block;
}

.index-content .four-screen .title .four-screen-readMore:hover {
    background-color: #ffffff;
    border: 1px solid #313131;
    color: #313131;
}

.index-content .four-screen .title .four-screen-readMore a:hover {
    color: #000;
}

.index-content .four-screen .line {
    width: 5.2vw;
    height: 0.3125vw;
    margin-top: 2.08vw;
}

.index-content .four-screen .content {
    width: 100%;
    height: 20.78vw;
    background-color: #ffffff;
    display: flex;
    justify-content: space-between;
    margin-top: 5.31vw;
    position: relative;
}

.index-content .four-screen .content .imgbox {
    width: 32.39vw;
    height: auto;
    cursor: pointer;
    overflow: hidden;
    border-radius: 1.25vw;
    position: absolute;
    top: 0;
    z-index: 99;
}

.index-content .four-screen .content img {
    width: 100%;
    height: 100%;
    cursor: pointer;
    /* object-fit: cover; */
    transform: scale(1.2, 1.2);
    transition: all 0.8s ease-in-out;
}

.index-content .four-screen .content img:hover {
    transition: all 0.8s ease-in-out;
    cursor: pointer;
    transform: scale(1, 1);
}

.index-content .four-screen .content .content-detail {
    width: 37.55vw;
    height: 17.38vw;
    padding: 1.86vw 4.1vw 2.6vw 6.3vw;
    box-sizing: border-box;
    background-color: #ffffff;
    position: absolute;
    right: 0;
    top: 1.04vw;
    border: 1px solid #b9b8b8;
    border-radius: 1.09vw;
}

.index-content .four-screen .content .content-detail p:nth-child(1) {
    width: 100%;
    font-size: 1.35vw;
    line-height: 2vw;
    font-weight: bolder;
    font-weight: 400;
    color: #000000;
    white-space: wrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.index-content .four-screen .content .content-detail img {
    width: 5.2vw;
    height: 0.3125vw;
    margin: 1vw 0;
}

.index-content .four-screen .content .content-detail p:nth-child(3) {
    font-weight: 400;
    color: #4c4c4c;
    font-size: 1.04vw;
    font-weight: 400;
    color: #000000;
    line-height: 2.09vw;
    height: 4.18vw;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.index-content .four-screen .content .content-detail .content-detail-bottom-box {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1vw;
}

.index-content .four-screen .content .content-detail .content-detail-bottom-box p {
    width: 100%;
    font-size: 1.04vw;
    font-weight: lighter;
    font-weight: 400;
    color: #4c4c4c;
}

.index-content .four-screen .content .content-detail .content-detail-bottom-box .bottom-readMore {
    width: 12.13vw;
    height: 2.213vw;
    border-radius: 2.56vw;
    border: 1px solid #313131;
    text-align: center;
    line-height: 2.213vw;
    font-size: 0.8vw;
    font-weight: lighter;
    font-weight: 400;
    color: #040404;
    display: flex;
    align-items: center;
    justify-content: space-around;
    box-sizing: border-box;
    padding: 0.6vw 0.9vw;
    cursor: pointer;
}

.index-content .four-screen .content .content-detail .content-detail-bottom-box .bottom-readMore:hover {
    background-color: #313131;
    color: #ffffff;
}

.index-content .four-screen .content .content-detail .content-detail-bottom-box .bottom-readMore img {
    width: 0.57vw;
    height: 0.31vw;
    margin-left: 0.36vw;
    margin-top: 1vw;
}


/* 修改第四屏 */

.index-content .four-screen .imgBox {
    width: 100%;
    margin-top: 2.19vw;
    height: 32.53vw;
    display: flex;
    justify-content: space-between;
}

.index-content .four-screen .imgBox .img-cont {
    width: 20.83vw;
    height: 100%;
}

.index-content .four-screen .imgBox .img-cont .img-cont-box {
    width: 100%;
    /* height: 12.63vw; */
    height: auto;
    border-radius: 1.25vw;
    overflow: hidden;
}

.index-content .four-screen .imgBox .img-cont .img-cont-box img {
    width: 100%;
    /* height: 12.63vw; */
    height: auto;
    cursor: pointer;
    /* object-fit: cover; */
    transform: scale(1, 1);
    transition: all 0.8s ease-in-out;
}

.index-content .four-screen .imgBox .img-cont .img-cont-box img:hover {
    transform: scale(1.2, 1.2);
    transition: all 0.8s ease-in-out;
}

.index-content .four-screen .imgBox .img-cont p:nth-child(2) {
    width: 100%;
    text-align: left;
    font-size: 1.25vw;
    font-weight: bolder;
    color: #000000;
    margin: 1.67vw 0 1.09vw 0;
    box-sizing: border-box;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
}

.index-content .four-screen .imgBox .img-cont p:nth-child(3) {
    width: 100%;
    height: 3.714vw;
    text-align: left;
    font-size: 0.93vw;
    line-height: 1.875vw;
    font-weight: 400;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    color: #4c4c4c;
}

.index-content .four-screen .imgBox .img-cont p:nth-child(4) {
    font-size: 0.93vw;
    color: #4c4c4c;
    margin-top: 1.3vw;
    font-weight: 400;
}


/* 二级菜单 */


/* .li-son {
    display: none;
    width: 10.85vw;
    height: auto;
    background: rgba(0, 0, 0, 0.5);
    position: absolute;
    list-style-type: none;
    z-index: 999;
    margin-left: -2.7vw;
    font-size: 0.98vw;
    padding: 1.5vw 0;
}

.li-son li {
    width: 100%;
    height: 3vw;
    line-height: 3vw;
    box-sizing: border-box;
    border: none;
}

.li-son li:hover {
    background: rgba(255, 255, 255, 0.2);
    color: #000;
    width: 100%;
    height: 3vw;
    line-height: 3vw;
}

.li-son li a {
    width: 100% !important;
    display: inline-block !important;
    height: 3vw !important;
    line-height: 3vw !important;
    background: none !important;
    color: #ffffff !important;
} */
.section-title {
  font-size: 2.6vw;
  text-align: center;
  color: #282d32;
  height: 5.7vw;
  position: relative;
}

.section-title::before {
  display: block;
  content: '';
  width: 5.2vw;
  height: 0.315vw;
  background-color: #3580ff;
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
}

.section-4 {
  height: 41.48vw;
  background-image: url(https://files.yidatec.com/img/pc/about/s4_bg.jpg);
  background-size: 100% 100%;
  background-repeat: no-repeat;
  padding-top: 6.25vw;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.section-4 .section-content {
  width: 100%;
  position: relative;
}

.section-4-swiper {
  width: 70.3vw!important;
  height: 30.78vw;
  margin: 0 auto;
  overflow: hidden;
}

.section-4-swiper .swiper-slide {
  transition: 300ms;
  transform-origin: bottom center;
  transform: scale(0.8);
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #ffffff;
  border: 1px solid #b7c5d7;
  box-shadow: 1px 1.82vw 5.2vw 1vw rgba(78, 108, 185, 0.05);
  border-radius: 0.26vw 0.26vw 0 0;
  box-sizing: border-box;
}

.section-4-swiper .swiper-slide-prev,
.section-4-swiper .swiper-slide-next {
  transform: scale(0.9);
  z-index: 2;
}

.section-4-swiper .swiper-slide-active {
  transform: scale(1);
  z-index: 3;
}

.section-4-slide {
  width: 100%;
  height: 100%;
  padding: 5.2vw 1.56vw;
  overflow: hidden;
  box-sizing: border-box;
  opacity: 0;
  transition: 300ms;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
}

.section-4-swiper .swiper-slide-prev .section-4-slide,
.section-4-swiper .swiper-slide-next .section-4-slide {
  opacity: 0.7;
}

.section-4-swiper .swiper-slide-active .section-4-slide {
  opacity: 1;
}

.hide {
  display: none;
}

.add {
  width: 100% !important;
}

.section-4-slide-pic {
  width: 11.25vw;
  height: 8.95vw;
  /* overflow: hidden; */
}

.section-4-slide-title {
  font-size: 1.56vw;
  color: #000;
}

.section-4-slide-title-en {
  font-size: 1.56vw;
  color: #000;
}

.section-4-arrow {
  width: 3.59vw;
  height: 3.59vw;
  position: absolute;
  bottom: 12.6vw;
  opacity: 1;
  cursor: pointer;
  outline: none;
}

.section-4-arrow:hover {
  opacity: 0.5;
}

.section-4-arrow-prev {
  left: 6.25vw;
}

.section-4-arrow-next {
  right: 6.25vw;
}