.swiper_box .swiper-slide div {
    width: auto;
    height: auto;
    font-size: 40px;
    color: #0D2D4C;
    position: absolute;
    top: 274px;
    left: 260px;
}
.about_content{
    padding: 0 260px 64px;
    background: #ffffff;
}
.about_top{
    width: 100%;
    padding-top: 100px;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
}
.about_top .about_left div:nth-of-type(1){
    font-size: 70px;
    color: #063253;
    font-weight: bold;
}
.about_top .about_left div:nth-of-type(2){
    font-size: 30px;
    color: #063253;
    font-weight: bold;
}
.about_top .about_right{
    font-size: 24px;
    font-weight: bold;
    background: linear-gradient(86.39deg, #3772FB 56.42%, #2CC5FF 103.75%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
}
.about_con{
    width: 100%;
    margin-top: 41px;
    display: flex;
    /* align-items: center; */
    justify-content: space-between;
    position: relative;
}
.about_con .con_left{
    width: 320px;
    height: 680px;
}
.about_con .con_left img{
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.about_con .con_center{
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    justify-content: center;
    position: absolute;
    top: 400px;
    left: 320px;
}
.about_con .con_center div{
    font-size: 70px;
    color: rgba(6, 50, 83,0.06);
    font-weight: bold;
    line-height: 1;
}
.about_con .con_center div:nth-of-type(1){
    margin-right: 30px;
    margin-bottom: 67px;
}
.about_con .con_right{
    width: 858px;
    min-height: 680px;
    background: #F8F9FB;
    padding: 40px;
}
.about_con .con_right .con_title{
    font-size: 28px;
    color: #333333;
    font-weight: bold;
}
.about_con .con_right .detail{
    font-size: 16px;
    color: #666666;
    line-height: 1.8;
    margin-top: 20px;
    /* text-indent: 2em; */
}
.about_con .con_right .other{
    font-size: 18px;
    color: #333333;
    font-weight: bold;
    margin-top: 30px;
}
/* 发展历程 */
.history_box{
    width: 100%;
    height: 540px;
    background: linear-gradient(226.47deg, #003A97 -0.39%, #004181 63.07%);
    position: relative;
}
.history_box .history_bg{
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
}
.history_box .history_con{
    width: 100%;
    height: 100%;
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
}
.history_box .history_con .history_title{
    height: 100%;
    width: 536px;
    padding-right: 66px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-end;
}
.history_box .history_con .history_title .title{
    font-size: 36px;
    color: #ffffff;
    font-weight: bold;
}
.history_box .history_con .history_title .detail{
    font-size: 16px;
    color: #ffffff;
    margin-top: 20px;
}
.history_box .history_con .history_item{
    width: 230px;
    height: 100%;
    border-left: 1px solid rgba(255, 255, 255,0.3);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px;
    cursor: pointer;
    transition-property: opacity, transform, background-color, box-shadow;
    transition-duration: 0.8s, 0.8s, 0.35s, 0.35s;
    transition-timing-function: ease, ease, ease, ease;
    transition-delay: var(--reveal-delay, 0ms), var(--reveal-delay, 0ms), 0ms, 0ms;
    will-change: transform;
    transition: width 0.35s ease, flex-basis 0.35s ease, background-color 0.35s ease, box-shadow 0.35s ease;
}
.history_box .history_con .history_item .item_year{
    font-size: 46px;
    color: #ffffff;
    font-weight: bold;
    position: relative;
    transition: transform 0.35s ease;
}
.history_box .history_con .history_item .item_year::after{
    content: '';
    width: 40px;
    height: 2px;
    background: #ffffff;
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    display: block;
    opacity: 0;
    transform: translateX(-50%) scaleX(0.6);
    transition: opacity 0.25s ease, transform 0.25s ease;
}
.history_box .history_con .history_item .item_con{
    font-size: 16px;
    color: rgba(255, 255, 255, 0.6);
    line-height: 40px;
    margin-top: 40px;
    display: block;
    opacity: 0;
    transform: translateY(8px);
    max-height: 0;
    overflow: hidden;
    transition: opacity 0.28s ease, transform 0.28s ease, max-height 0.35s ease;
}
.history_box .history_con .history_item img{
    width: 44px;
    height: 44px;
    margin-top: 76px;
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.25s ease, transform 0.25s ease;
}
.history_box .history_con .history_item:hover {
    width: 345px;
    background: #00418299;
}
.history_box .history_con .history_item:hover .item_year::after{
    opacity: 1;
    transform: translateX(-50%) scaleX(1);
}
.history_box .history_con .history_item:hover .item_con {
    opacity: 1;
    transform: translateY(0);
    max-height: 260px;
}
.history_box .history_con .history_item:hover img {
    opacity: 0;
    transform: translateY(-6px);
}
/* 合作单位 */
.partner_box{
    background: #f9f9f9;
    padding: 60px 0;
}
.partner_con{
    width: 1400px;
    margin: 0 auto;
}
.section_top {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}
.section_top .title {
    font-size: 36px;
    color: #333333;
    font-weight: bold;
    line-height: 1;
}
.section_top .detail {
    font-size: 16px;
    color: #666666;
    line-height: 1;
    margin-top: 20px;
}
.partner_box .partner_list{
    margin-top: 40px;
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
}
.partner_box .partner_list .partner_item{
    height: 114px;
    border: 1px solid #D9D9D9;
    border-radius: 8px;
    background: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 36px;
    cursor: pointer;
    transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
    will-change: transform;
}
.partner_box .partner_list .partner_item:hover{
    transform: translateY(-6px);
    box-shadow: 0 14px 32px rgba(0, 0, 0, 0.10);
}
.partner_box .partner_list .partner_item img{
    width: auto;
    max-width: 100%;
    height: 90%;
    object-fit: contain;
    transition: transform 0.35s ease;
}
.partner_box .partner_list .partner_item:hover img{
    transform: scale(1.04);
}


/* 响应式 */
@media (max-width: 1700px) {
    .about_content .con_center{
        top: 400px;
        left: 300px;
    }
    .about_content .con_right{
        padding: 30px;
    }
}
@media (max-width: 1400px) {
    .about_content{
        padding: 0 120px 60px;
    }
    .partner_con{
        width: 100%;
        padding: 0 120px;
        box-sizing: border-box;
    }
}

@media (max-width: 1200px) {
    .swiper_box .swiper-slide div{
        font-size: 34px;
    }
    .about_content{
        padding: 0 60px 30px;
    }
    .about_top{
        padding-top: 70px;
        gap: 16px;
    }
    .about_top .about_left div:nth-of-type(1){
        font-size: 56px;
    }
    .about_top .about_left div:nth-of-type(2){
        font-size: 26px;
    }
    .about_top .about_right{
        font-size: 20px;
    }

    .about_con .con_left{
        width: 260px;
        height: 560px;
        flex: 0 0 auto;
    }
    .about_con .con_center{
        top: 330px;
        left: 240px;
    }
    .about_con .con_center div{
        font-size: 56px;
    }
    .about_con .con_right{
        width: auto;
        min-height: 560px;
        flex: 1;
        height: auto;
        background: #F8F9FB;
        padding: 22px;
        padding-right: 0;
        box-sizing: border-box;
    }
    .about_con .con_right .detail{
        line-height: 34px;
    }
    .about_con .con_right .other{
        margin-top: 20px;
    }
    .history_box .history_con .history_title{
        padding-right: 20px;
    }
    .partner_con{
        padding: 0 60px;
    }
    .partner_box .partner_list{
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 992px) {
    .swiper_box .swiper-slide div{
        font-size: 28px;
    }
    .about_content{
        padding: 0 24px;
    }
    .about_top{
        padding-top: 44px;
        flex-wrap: wrap;
        align-items: center;
    }
    .about_top .about_left div:nth-of-type(1){
        font-size: 44px;
    }
    .about_top .about_left div:nth-of-type(2){
        font-size: 22px;
    }
    .about_top .about_right{
        font-size: 18px;
    }

    .about_con{
        flex-direction: column;
        align-items: stretch;
        gap: 18px;
    }
    .about_con .con_center{
        position: relative;
        top: 0;
        left: 0;
        align-items: center;
    }
    .about_con .con_center div:nth-of-type(1){
        margin: 0;
    }
    .about_con .con_left{
        width: 100%;
        height: auto;
        aspect-ratio: 16 / 9;
    }
    .about_con .con_right{
        width: 100%;
        height: auto;
        padding: 28px 24px;
    }
    .about_con .con_right .detail{
        font-size: 14px;
        line-height: 28px;
        margin-top: 18px;
    }
    .about_con .con_right .other{
        margin-top: 24px;
    }

    .history_box{
        height: auto;
        margin-top: 44px;
        padding: 44px 0;
    }
    .history_box .history_con{
        height: auto;
        flex-direction: column;
        align-items: stretch;
        padding: 0 24px;
        box-sizing: border-box;
        gap: 16px;
    }
    .history_box .history_con .history_title{
        width: 100%;
        height: auto;
        padding-right: 0;
        align-items: center;
        text-align: center;
    }
    .history_box .history_con .history_title .title{
        font-size: 30px;
    }

    .history_box .history_con .history_item{
        width: 100%;
        height: auto;
        border-left: none;
        border-top: 1px solid rgba(255, 255, 255,0.3);
        flex-direction: row;
        justify-content: flex-start;
        gap: 14px;
        padding: 16px 0;
        background: transparent;
    }
    .history_box .history_con .history_item:first-of-type{
        border-top: none;
    }
    .history_box .history_con .history_item .item_year{
        font-size: 28px;
        flex: 0 0 auto;
    }
    .history_box .history_con .history_item .item_year::after{
        display: none;
    }
    .history_box .history_con .history_item .item_con{
        display: block;
        margin-top: 0;
        font-size: 14px;
        line-height: 24px;
        color: rgba(255, 255, 255, 0.75);
    }
    .history_box .history_con .history_item img{
        width: 40px;
        height: 40px;
        margin-top: 0;
        /* display: none; */
    }
    .history_box .history_con .history_item:hover{
        width: 100%;
        background: transparent;
    }

    .partner_con{
        padding: 0 24px;
    }
    .partner_box .partner_list{
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
    }
    .partner_box .partner_list .partner_item{
        padding: 0 18px;
    }
}

@media (max-width: 768px) {
    .swiper_box .swiper-slide div{
        top: 43%;
        left: 50%;
        transform: translate(-50%, -50%);
        font-size: 24px;
    }
    .about_content{
        padding: 0 16px;
    }
    .about_top .about_left div:nth-of-type(1){
        font-size: 38px;
    }
    .about_top .about_left div:nth-of-type(2){
        font-size: 20px;
    }
    .about_top .about_right{
        font-size: 16px;
    }

    .history_box .history_con{
        padding: 0 16px;
    }
    .history_box .history_con .history_title .title{
        font-size: 26px;
    }

    .partner_con{
        padding: 0 16px;
    }
    .section_top .title{
        font-size: 28px;
    }
    .partner_box .partner_list{
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .swiper_box .swiper-slide div{
        top: 40%;
        font-size: 18px;
    }
    .about_top{
        padding-top: 34px;
    }
    .about_con .con_right{
        padding: 20px 16px;
    }
    .about_con .con_right .con_title{
        font-size: 22px;
    }
    .history_box{
        padding: 34px 0;
    }
    .partner_box{
        padding: 44px 0;
    }
    .partner_box .partner_list .partner_item{
        height: 96px;
    }
}