.video_wrap {
    background-color: #7c7d6a;
    position: relative;
    height: 100%;
    min-width: 1200px;
    display: -ms-flexbox;
    display: flex;
    align-items: center;
    -ms-flex-pack: center;
    justify-content: center;
    -ms-flex-align: center;
    justify-content: center;
    color: #fff;
    text-align: center;
    opacity: 1;
}

.bg {
    position: absolute;
    left: 0;
    top: 0;
    width: 100% !important;
    height: 100% !important;
    background-image: url(../img/bg_point.png);
    z-index: 1;
}


video {
    transition: .35s;
    min-width: 100%;
    min-height: 100%;
    object-fit: cover;
    height: 100%
}

.banner {
    background-image: url(../img/index/banner.jpg); 
}

header {
    height: 100%;
    position: absolute;
    left: 50%;
    top: 0;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    color: #fff;
}

.header_top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 1200px;
    height: 72px;
    margin: 0px auto;
    position: relative;
}

.header_top_wrap {
    width: 100%;
    position: fixed;
    top: 0;
    z-index: 99999;
    transition: all .5s;
}

.header_top_wrap img {
    height: 50px;
}

.bottom {
    margin: 0 !important;
    padding: 100px 0;
}

.header_top span {
    position: absolute;
    top: 20px;
    right: 0;

}

.main>p {
    margin-bottom: 30px !important;
    text-align: center;
}

.item_wrap {
    width: 100%;
}

.item_wrap ul {
    width: 100%;
    display: flex;
    justify-content: space-between;
}

.item_wrap ul li {
    width: 24%;
    border: 1px solid #E8E8E8;
    background: #FFFFFF;
    font-size: 0;
    height: 419px;
    position: relative;
    transition-property: transform;
    overflow: hidden;
}

.item_wrap ul li a {
    display: block;
}

.item_wrap ul li img {
    width: 100%;
    display: inline-block;
}

.item_wrap ul li .item_content {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 20px;
    background: #fff;
    transition: all 0.5s ease;
    height: 90px;
    z-index: 99;
}

.item_wrap ul li .item_content .type {
    font-size: 14px;
    color: #999999;
    line-height: 20px;
    margin-bottom: 10px;
}

.item_wrap ul li .item_content .line {
    width: 61px;
    height: 2px;
    background: #4A4A4A;
    margin-bottom: 10px;
}

.item_wrap ul li .item_content h3 {
    margin-bottom: 16px;
    font-size: 22px;
    line-height: 30px;
}

.item_wrap ul li .item_content p {
    margin-bottom: 16px;
    font-size: 12px;
    line-height: 30px;
    opacity: 0;
    transition: all 1s ease;
    font-size: 14px;
    color: #999999;
}

.product {
    width: 100%;
    padding: 100px 0;
    background-color: #f0f4f5;
}

.product>.main>h2 {
    margin-top: 0 !important;
    line-height: 1;
}

.product .product_item_wrap {
    width: 100%;
    background-color: #fff;
    -webkit-box-shadow: 0 0 20px rgb(0 0 0 / 10%);
    box-shadow: 0 0 20px rgb(0 0 0 / 10%);
    display: flex;
    flex-wrap: wrap;
}

.product .product_item_wrap .product_item {
    width: 25%;
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 260px;
    padding: 30px;
    cursor: pointer;
    box-sizing: border-box;
}

.product .product_item_wrap .product_item h3 {
    margin-top: 20px;
    margin-bottom: 5px;
    font-size: 22px;
    line-height: 30px;
}

.product .product_item_wrap .product_item h3:hover {
    color: #00a74a;
}

.product .product_item_wrap .product_item p {
    font-size: 18px;
    color: #999;
}

.product .product_item_wrap img {
    height: 120px;
}

.product .product_item_wrap .bg_green {
    background-color: #ecf1f2;
}

.application_case {
    padding-top: 100px;
}

.application_case .application_item_wrap {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    margin-bottom: 180px;
}

.application_case .application_item_wrap .application_item {
    width: 32.5%;
    flex-wrap: wrap;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 25px;
    overflow: hidden;
}

.application_case .application_item_wrap .application_item div {
    height: 256px;
    overflow: hidden;
}

.application_case .application_item_wrap .application_item img {
    width: 100%;
}

.application_case .application_item_wrap .application_item h3 {
    margin-top: 20px;
    margin-bottom: 5px;
    font-size: 22px;
    line-height: 30px;
}

.partner_item_wrap {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
}

.partner_item_wrap .partner_item {
    width: 25%;
    height: 138px;
    padding: 24px;
}

.partner_item_wrap .partner_item div {
    width: 100%;
    height: 100%;
    background: #ffffff;
    box-shadow: 0px 4px 27px 0px rgb(133 145 204 / 17%);
    display: flex;
    justify-content: center;
    align-items: center;
}