.dev_top {
    width: 100%;
    height: 876px;
    /*background-color: antiquewhite;*/
    overflow: hidden;
    position: relative;
}

.dev_top img {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1;
    width: 100%;
    height: 876px;
    object-fit: cover;
}

.dev_top .dev_top_box {
    width: 1300px;
    height: 100%;
    /*background-color: aqua;*/
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.dev_top .dev_top_box .dev_top_title1 {
    font-family: "FontquanXinYiGuanHeiTi";
    font-size: 80px;
    color: #fff;
    padding-top: 287px;
}

.dev_top .dev_top_box .dev_top_title2 {
    font-family: "FontquanXinYiGuanHeiTi";
    font-size: 30px;
    color: #fff;
    margin-top: 32px;
    margin-bottom: 38px;
}

.dev_top .dev_top_box .dev_top_btn {
    width: 147px;
    height: 53px;
    line-height: 53px;
    background: transparent;
    border: 1px solid #fff;
    font-family: 'FontquanXinYiGuanHeiTi';
    font-size: 16px;
    text-align: center;
    color: #fff;
    border-radius: 5px;
    cursor: pointer;
}

.platform {
    width: 100%;
    height: 916px;
    background-color: #000000;
}

.platform .platform_box {
    width: 1300px;
    /* height: 100%; */
    padding-top: 80px;
    margin: 0 auto;
}

.platform .platform_title {
    font-family: "Microsoft YaHei";
    font-size: 40px;
    text-align: center;
    color: #fff;
}

.platform .platform_text {
    width: 780px;
    margin: 0 auto;
    font-family: "Microsoft YaHei";
    font-size: 16px;
    line-height: 30px;
    text-align: center;
    color: #fff;
    margin-top: 38px;
    margin-bottom: 38px;
}

.platform .platform_tips {
    font-family: "Microsoft YaHei";
    font-size: 20px;
    text-align: center;
    color: #0847f5;
    margin-bottom: 42px;
}

.platform .platform_ul {
    display: flex;
    flex-flow: row;
    justify-content: space-between;
}

.platform .platform_ul li {
    width: 255px;
    height: 460px;
    background: #292727;
}

.platform .platform_ul li .platform_img {
    width: 255px;
    height: 150px;
}

.platform .platform_ul li .platform_li_box {
    padding: 22px 15px;
}

.platform .platform_ul li .platform_li_box .platform_img_title {
    font-family: "Microsoft YaHei";
    font-size: 20px;
    color: #fff;
    margin-bottom: 37px;
}

.platform .platform_ul li .platform_li_box .platform_img_text {
    font-family: "Microsoft YaHei";
    font-size: 16px;
    line-height: 30px;
    color: #8f8282;
}

.framework {
    width: 100%;
    height: 1074px;
    background: #272424;
}

.framework .framework_box {
    width: 1300px;
    margin: 0 auto;
}

.framework .framework_title {
    padding: 61px 0;
    font-family: "Microsoft YaHei";
    font-size: 40px;
    text-align: center;
    color: #fff;
}

.framework .framework_img {
    width: 100%;
    height: 572px;
}

.framework .framework_ul {
    display: flex;
    flex-flow: row;
    justify-content: space-between;
    margin-top: 28px;
}

.framework .framework_ul li {
    width: calc(253px - 40px);
    height: calc(217px - 56px);
    padding: 28px 20px;
    border-radius: 10px;
    background: #464242;
}

.framework .framework_ul li .framework_li_title {
    font-family: "Microsoft YaHei";
    font-size: 20px;
    color: #fff;
    margin-bottom: 23px;
}

.framework .framework_ul li .framework_li_text {
    font-family: "Microsoft YaHei";
    font-size: 14px;
    line-height: 30px;
    -webkit-line-clamp: 4;
    color: #8f9195;
}

.openness {
    width: 100%;
    height: 1118px;
    background-color: #000;
    text-align: center;
    position: relative;
}

.openness .wrap {
    position: relative;
    z-index: 2;
}

.openness img.bg {
    position: absolute;
    z-index: 1;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.openness .openness_title {
    font-family: "Microsoft YaHei";
    font-size: 40px;
    text-align: center;
    color: #fff;
    padding-top: 100px;
    padding-bottom: 120px;
}

.openness .openness_img {
    width: 1300px;
    height: 612px;
    /* margin: 0 auto; */
}

.openness .openness_ul {
    width: 1300px;
    margin: 0 auto;
    display: flex;
    flex-flow: row;
    justify-content: space-between;
    margin-top: 68px;
}

.openness .openness_ul li {
    padding: 0 26px;
    width: 235px;
}


.openness .openness_ul .openness_li_title {
    font-family: "Microsoft YaHei Bold";
    font-weight: 700;
    font-size: 30px;
    text-align: left;
    color: #fff;
}

.openness .openness_ul .openness_li_text {
    margin-top: 40px;
    font-family: "Microsoft YaHei";
    font-size: 16px;
    text-align: left;
    color: #fff;
}

.industry {
    width: 100%;
    height: 677px;
    background: #191818;
    /* background-color: aqua; */
}

.industry .industry_title {
    font-family: "Microsoft YaHei";
    font-size: 40px;
    text-align: center;
    color: #fff;
    padding-top: 100px;
    padding-bottom: 90px;
}

.industry .industry_swiper {
    position: relative;
    width: 1300px;
    height: 370px;
    margin: 0 auto;
    --swiper-navigation-size: 0;
}

.industry .swiper-slide {
    position: relative;
    width: 410px;
    height: 275px;
}

.industry .swiper-slide .industry_img {
    width: 100%;
    height: 100%;
}

.industry .swiper-slide .industry_text {
    position: absolute;
    left: 0;
    bottom: 0;
    padding: 24px 21px;
    font-family: "Microsoft YaHei";
    font-size: 24px;
    color: #fff;
    /* width: 410px;
    height: 275px; */
}


.industry .swiper .swiper-button-prev,
.industry .swiper .swiper-button-next {
    top: auto;
    bottom: 15px;
}

.industry .swiper .swiper-button-prev {
    left: 560px;
}

.industry .swiper .swiper-button-next {
    right: 560px;
}

.industry .swiper .industry_swiper_prev,
.industry .swiper .industry_swiper_next {
    width: 45px;
    height: 45px;
}