.banner {
    width: 100%;
}

.banner img {
    display: block;
    width: 100%;
    object-fit: cover;
    min-height: 21.875rem;

}

.about_list {
    background: #ffff;
    width: 100%;
    padding: .75rem 0 0;
    border-bottom: 1px solid #E5E5E5;
}

.about_list .center {
    display: flex;
    align-items: center;
    justify-content: center;
    overflow-x: auto;
}

.about_list .center a {
    display: block;
    white-space: nowrap;
    padding-bottom: .75rem;
    position: relative;
    font-family: Microsoft YaHei, Microsoft YaHei;
    font-weight: 400;
    font-size: 1rem;
    color: #333333;
    line-height: 1.25rem;
    text-align: center;
    font-style: normal;
    text-transform: none;
    transition: all 0.2s ease-in-out;
    margin: 0 1.125rem;
}

.about_list .center a:hover {
    color: #0154A4;
}

.about_list .center a::after {
    content: '';
    display: block;
    position: absolute;
    left: 50%;
    bottom: 0;
    width: 0%;
    height: 1px;
    background: #0154A4;
    transition: all 0.3s ease-in-out;
}

.about_list .center a:hover::after {
    left: 0;
    width: 100%;
}

.about_list .center a.act {
    color: #0154A4;
}

.about_list .center a.act::after {
    left: 0;
    width: 100%;
}





.introduce {
    background: #F5F5F5;
}

.introduce .center {
    width: 100%;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.introduce .center .l {
    width: 33.125%;
    margin-right: 4.375%;
    padding: 1rem 0;
}

.introduce .center .l .title {
    font-family: Microsoft YaHei, Microsoft YaHei;
    font-weight: bold;
    font-size: 2rem;
    color: #333333;
    line-height: 1;
    text-align: left;
    font-style: normal;
    text-transform: none;
    margin-bottom: 2.125rem;
}

.introduce .center .l .text {
    font-family: Microsoft YaHei, Microsoft YaHei;
    font-weight: 400;
    font-size: 1rem;
    color: #333333;
    line-height: 2rem;
    text-align: left;
    font-style: normal;
    text-transform: none;
}


.introduce .center .l .L_bom {
    margin-top: 2.5rem;
    width: 100%;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.introduce .center .l .L_bom .item {
    width: 33.3333%;
}

.introduce .center .l .L_bom .item .t {
    display: flex;
    align-items: flex-end;
    font-family: Microsoft YaHei, Microsoft YaHei;
    font-weight: 400;
    font-size: 1rem;
    color: #333333;
    line-height: 1;
    text-align: left;
    font-style: normal;
    text-transform: none;
    margin-bottom: .375rem;
    line-height: 1.5rem;
    height: 3.25rem;
}

.introduce .center .l .L_bom .item .t img {
    height: 100%;
    display: block;
}

.introduce .center .l .L_bom .item .t .countup {
    font-family: Microsoft YaHei, Microsoft YaHei;
    font-weight: 400;
    font-size: 3.25rem;
    color: #333333;
    line-height: 1;
    text-align: left;
    font-style: normal;
    text-transform: none;
}

.introduce .center .l .L_bom .item .name {
    margin-top: .75rem;
    font-family: Microsoft YaHei, Microsoft YaHei;
    font-weight: 400;
    font-size: 1rem;
    color: #333333;
    line-height: 1;
    text-align: left;
    font-style: normal;
    text-transform: none;
}

.introduce .center .r {
    width: 50%;
}

.introduce .center .r .prc img {
    width: 100%;
    display: block;
}

.culture {
    padding: 14.375rem 0 14.375rem;
    width: 100%;
    background: fixed url(../images/culture_bj.jpg) no-repeat center center;
    background-size: cover;
}

.culture .title {
    font-family: Microsoft YaHei, Microsoft YaHei;
    font-weight: bold;
    font-size: 2rem;
    color: #FFFFFF;
    line-height: 1;
    text-align: left;
    font-style: normal;
    text-transform: none;
    margin-bottom: 2rem;
}

.culture .culture_bom {
    width: 100%;
    min-height: 13.125rem;
    font-family: Microsoft YaHei, Microsoft YaHei;
    font-weight: 400;
    font-size: 1.25rem;
    color: #FFFFFF;
    line-height: 2.875rem;
    text-align: left;
    font-style: normal;
    text-transform: none;
}

.Architecture {
    width: 100%;
    padding: 3.75rem 0;
    background: #ffff;
}

.Architecture .title {
    font-family: Microsoft YaHei, Microsoft YaHei;
    font-weight: bold;
    font-size: 2rem;
    color: #333333;
    line-height: 1;
    text-align: left;
    font-style: normal;
    text-transform: none;
    margin-bottom: 2.5rem;
}

.Architecture .prc {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.Architecture .prc img {
    display: block;
    margin: 0 auto;
    max-width: 100%;
}

.Preview {
    width: 100%;
    padding: 1.25rem 0 4.25rem 0;
}

.Preview .title {
    font-family: Microsoft YaHei, Microsoft YaHei;
    font-weight: bold;
    font-size: 2rem;
    color: #333333;
    line-height: 1;
    text-align: left;
    font-style: normal;
    text-transform: none;
    margin-bottom: 1.25rem;
}

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

.Preview .Preview_bom .prc {
    width: 32.7%;
    aspect-ratio: 472/352;
    margin-right: 0.95%;
    margin-bottom: .75rem;
    background: #0154A4;
}

.Preview .Preview_bom .prc:nth-child(3n) {
    margin-right: 0;
}

.Preview .Preview_bom .prc img {
    display: block;
    object-fit: cover;
    width: 100%;
    min-height: 100%;
}


/* 弹窗 */
.overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 9999;
}

.popup {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: 20px;
    z-index: 10000;
    max-width: 90%;
    max-height: 90%;
}

.popup .prc {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    position: relative;
}

.popup .prc img {
    display: block;
    object-fit: contain;
    max-width: 100%;
    max-height: calc(100% - 3.5rem);
}

.popup .prc .close {
    background: none;
    outline: none;
    border: none;
    margin-top: 1.25rem;
}

.popup .prc .close .iconfont {
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: bold;
}

.w1440 {margin: 0 auto;max-width: 96%;width: 90rem;}
.center-banner {width: 100%;}
.center-banner img {display: block;width: 100%;object-fit: cover;min-height: 21.875rem;}
.about-title {background: #ffff;width: 100%;padding-top: 4.75rem;padding-bottom: 6.9375rem;}
.about-title .center {display: flex;align-items: center;justify-content: center;overflow-x: auto;}
.about-title .center .about-title-text {font-family: Microsoft YaHei, Microsoft YaHei;font-weight: bold;
            font-size: 2rem;color: #000000;line-height: 2.8125rem;
            text-align: center;
            font-style: normal;
        }
.about-bottom-content {background: #ffff;width: 100%;padding-bottom: 5.5rem;}
.about-bottom-content .center {display: flex;flex-direction: column;align-items: center;}
.about-bottom-content .about-content-item {padding-bottom: 5.625rem;}
.about-bottom-content .about-content-item img {width: 70rem;}

@media (max-width: 1200px) {
    .banner{
        margin-top: 5rem;
    }
    .banner img{
        min-height: auto;
    }
}


@media (max-width: 768px) {
    .banner{
        margin-top: 0;
    }
    .banner img{
        min-height: auto;
    }

    .about_list .center{
        justify-content: flex-start;
    }
    
    .introduce .center{
        flex-direction: column;
        padding: 0 1.25rem;
    }
    .introduce .center .l{
        width: 100%;
        margin-right: 0;
    }
    .introduce .center .l .title{
        font-size: 1.875rem;
        margin-bottom: 1.25rem;
    }
    .introduce .center .l .text{
        font-size: .875rem;
        line-height: 1.5;
    }
    .introduce .center .r{
        width: 100%;
    }

    .culture{
        padding: 1.25rem;
    }
    .culture .title{
        font-size: 1.875rem;
        margin-bottom: 1.25rem;
    }
    .culture .culture_bom{
        min-height: auto;
        font-size: 1rem;
        line-height: 2;
    }

    .Architecture{
        padding: 1.875rem 0;
    }
    .Architecture .title{
        font-size: 1.875rem;
        margin-bottom: 1.25rem;
    }

    .Preview{
        padding: 1.875rem 0;
    }
}