@media screen and (min-width:751px) {
    * {
        margin: 0;
        padding: 0;
        border: 0;
    }

    div {
        margin: 0;
        padding: 0;
        border: 0;

    }

    .w {
        width: 1200px;
        margin: 0 auto;
    }

    ul li {
        list-style: none;
    }

    .ck-slide {
        width: 100%;
        min-width: 1200px;
        height: 474px;
        position: relative;

    }

    header {
        width: 100%;
        height: 474px;
        min-width: 1200px;
        /* background-image: url("../aiimage/Education/banner.png");
        background-size: 100% 100%; */
        position: relative;
    }

    .imageclass {
        width: 100%;
        height: 474px;
        position: relative;
        /* object-fit: cover; */
        object-fit: cover;
    }

    .top {
        position: absolute;
        top: 119px;
        /* left: 360px; */
        width: 534px;
        text-align: left;
    }

    .title_one {
        font-family: Alibaba PuHuiTi;
        font-weight: 500;
        font-size: 36px;
        color: #FFFFFF;
    }

    .xian_one {
        width: 100px;
        height: 4px;
        background: #F5F2F6;
        margin: 34px 0;
    }

    .content {
        font-family: Alibaba PuHuiTi;
        font-weight: 400;
        font-size: 16px;
        color: #FFFFFF;
        line-height: 30px;
    }

    .neirongbigbox {
        width: 100%;
        min-width: 1200px;
        height: 252px;
        background: #F7F9FD;
    }

    .neirongbox {
        height: 212px;
        background: #FFFFFF;
        border-radius: 16px;
        margin-top: -40px;
        z-index: 1;
        position: relative;
        display: flex;
        padding: 27px 75px 38px 106px;
        box-sizing: border-box;
        justify-content: space-between;
    }

    .neirongbox li {
        display: flex;
        align-items: center;
        flex-direction: column;
    }

    .neirongbox li img {
        width: 78px;
        height: 73px;
        margin-left: -18px;
    }
    .neirongbox li:first-child img{
        width: 80px;
        height: 75px;
        margin-left: -18px;
    } 
    .box_title {
        font-family: Alibaba PuHuiTi;
        font-weight: 400;
        font-size: 28px;
        color: #333333;
        margin-top: 20px;
    }

    .box_one {
        font-family: Alibaba PuHuiTi;
        font-weight: 400;
        font-size: 16px;
        color: #999999;
        margin-top: 4px;
    }

    .section_one {
        width: 100%;
        min-width: 1200px;
    }

    .section_one_content {
        display: flex;
        justify-content: space-between;
        padding: 70px 0;
        box-sizing: border-box;
    }

    .section_one_content_left {
        width: 580px;
        height: 268px;
        background: #FFFFFF;
        box-shadow: 0px 0px 17px 1px rgba(0, 0, 0, 0.09);
        border-radius: 10px;
    }

    .section_one_content_left_top {
        width: 580px;
        height: 70px;
        background: linear-gradient(86deg, #29C7FB, #3D93FD);
        border-radius: 10px 10px 0px 0px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 0 24px;
        box-sizing: border-box;
    }

    .sectiontitle {
        font-family: Alibaba PuHuiTi;
        font-weight: 500;
        font-size: 24px;
        color: #FFFFFF;
    }

    .sectioncontent {
        display: flex;
        margin-bottom: 20px;
        /* background-color: red; */
    }
    .sectioncontent:last-child{
        margin-bottom: 0;
    }
    /* .contetwo {
        
    } */

    .sectioncontent_bottom {
        height: 198px;
        padding: 24px 19px 27px 24px;
        box-sizing: border-box;

    }

    .bottomnew {
        display: flex;
        flex-direction: column;
        /* justify-content: space-between; */
    }

    .content_two {
        font-family: Alibaba PuHuiTi;
        font-weight: 400;
        font-size: 16px;
        color: #666666;
        margin-left: 7px;
        line-height: 18px;
    }

    .bluephone {
        width: 52px;
        height: 52px;
    }

    .rightimg {
        width: 22px;
        height: 22px;
        margin-top: -2px;
    }

    .section_two {
        width: 100%;
        min-width: 1200px;
        height: 1729px;
        background-image: url("../aiimage/videophone/videbg.png");
        background-size: 100% 100%;
    }

    .neititle {
        font-family: Alibaba PuHuiTi;
        font-weight: 400;
        font-size: 28px;
        color: #333333;
        padding: 70px 0 23px 0;
        box-sizing: border-box;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .section_two {
        width: 100%;
        min-width: 1200px;
        height: 440px;
        background: #F7F9FD;
    }

    .section_two_content {
        height: 100%;
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .particularbox {
        width: 100%;
        min-width: 1200px;
        background: #fff;
        height: 424px;
        padding: 70px 0;
        box-sizing: border-box;
    }

    .particular {}

    .partstar {
        display: flex;
        justify-content: center;
        align-items: center;
        line-height: 26px;

    }

    .partstar h1 {
        font-family: Alibaba PuHuiTi;
        font-weight: 400;
        font-size: 28px;
        color: #333333;
    }

    .partstar img {
        margin: 0 8px;
    }

    .blue {
        background: linear-gradient(-86deg, #3D93FD, #29C7FB);
    }

    .orange {
        background: linear-gradient(90deg, #FFB966, #FD7E31);
    }

    .green {
        background: linear-gradient(-90deg, #21E179, #2EF398);
    }

    .yellow {
        background: linear-gradient(-90deg, #FFA60A, #F7C92A);
    }



    .particular ul {
        display: flex;
        margin-top: 40px;
    }

    .particular ul li:nth-child(-n+3) {
        margin-right: 20px;
    }

    .partbox {
        width: 285px;
        height: 218px;
        background: #FFFFFF;
        box-shadow: 0px 4px 9px 0px rgba(0, 0, 0, 0.05);
        border-radius: 10px;
    }

    .part-botbox {
        padding: 18px 0 0 0;
        box-sizing: border-box;
    }

    .part-top {
        height: 50px;
        border-radius: 10px 10px 0px 0px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 9px 19px 8px;
        box-sizing: border-box;
    }

    .part-top h6 {
        font-family: Alibaba PuHuiTi;
        font-weight: 400;
        font-size: 24px;
        color: #FFFFFF;
        height: 23px;
        line-height: 23px;
    }

    .heng {
        width: 25px;
        height: 3px;
        background: #FFFFFF;
        margin-top: 5px;
    }

    .easyimg {
        width: 32px;
        height: 34px;
    }

    .usreimg {
        width: 31px;
        height: 34px;
    }

    .optionimg {
        width: 36px;
        height: 34px;
    }

    .toolimg {
        width: 35px;
        height: 32px;
    }

    .part-bot {
        display: flex;
        align-items: flex-start;
        padding-left: 18px;
        padding-right: 18px;
        box-sizing: border-box;
        margin-bottom: 12px;
    }

    .part-bot img {
        width: 17px;
        height: 13px;
        margin-right: 7px;
        margin-top: 6px;
    }

    .part-bot p {
        font-family: Alibaba PuHuiTi;
        font-weight: 400;
        font-size: 16px;
        color: #333333;
    }

    .minivideoimgtwo {
        display: none;
    }

    .videoimgtwo {
        display: block;
    }

    .cardtitle {
        font-family: Alibaba PuHuiTi;
        font-weight: 400;
        font-size: 28px;
        color: #333333;
        text-align: center;
        display: flex;
        align-items: center;
        justify-content: center;
        height: 26px;
    }

    .section_four {
        width: 100%;
        min-width: 1200px;
        height: 536px;
        background: #F6F8FB;
    }

    .section_four_box {
        height: 100%;
        padding: 70px 0;
        box-sizing: border-box;
    }

    .start_left_img {
        width: 14px;
        height: 14px;
        margin-right: 8px;
    }

    .start_right_img {
        width: 14px;
        height: 14px;
        margin-left: 8px;
    }

    .section_four_box ul {
        display: flex;
        justify-content: space-between;
        margin-top: 50px;
    }

    .section_four_box ul li {
        width: 384px;
        height: 320px;
        position: relative;
    }

    .four_bottom {
        width: 384px;
        height: 136px;
        background: #FFFFFF;
        border-radius: 12px;
        position: absolute;
        left: 0;
        bottom: 0;
        padding: 28px 0 0 27px;
        box-sizing: border-box;
    }

    .four_bottom_top {
        display: flex;
        align-items: center;
        font-family: Alibaba PuHuiTi;
        font-weight: 400;
        font-size: 20px;
        color: #333333;
    }

    .four_bottom_top img {
        margin-right: 11px;
    }

    .four_bottom p {
        font-family: Alibaba PuHuiTi;
        font-weight: 400;
        font-size: 16px;
        color: #999999;
        margin-left: 5px;
        margin-top: 12px;
    }

    .section_four_box ul li:first-child {
        background-image: url("../aiimage/Education/educiton_three.png");
        background-size: 100% 100%;
    }

    .section_four_box ul li:nth-child(2) {
        background-image: url("../aiimage/Education/educiton_four.png");
        background-size: 100% 100%;
    }

    .section_four_box ul li:last-child {
        background-image: url("../aiimage/Education/educiton_five.png");
        background-size: 100% 100%;
    }

    .minieduction_two {
        display: none;
    }
}