.about-us-box {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 4.625rem;
    background: url(../images/about-us-banner01.png) no-repeat center top;
    background-size: cover;
}

.about-us-banner h2 {
    font-size: .625rem;
    font-weight: 700;
    color: #FFFFFF;
    margin-bottom: .125rem;
    font-family: 'SourceHanSansCN-Bold';
}

.about-us-banner h2 span {
    border-bottom: 2px solid #18AD5E;
}

.about-yt-title {
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    height: 1.5rem;
}

.about-yt-title span {
    color: rgba(55, 70, 104, 1);
    font-family: 'SourceHanSansCN-Medium';
    font-size: .5rem;

}

.about-yt-content p {
    text-indent: 2em;
    font-family: 'SourceHanSansCN-Normal';
    color: rgba(71, 71, 71, 1);
    font-size: .25rem;
    line-height: .575rem;
}

/* 一图了解壹碳产品体系 start */
.about-yt-system-box {
    margin-top: .25rem;
    background: #F5F9FA;
    padding-bottom: .875rem;
}

.about-yt-system-title {
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    height: 2.5rem;
}

.about-yt-system-title span {
    color: rgba(55, 70, 104, 1);
    font-family: 'SourceHanSansCN-Medium';
    font-size: .5rem;
}

.about-yt-system-pic img {
    width: 100%;
}

/* 一图了解壹碳产品体系 end */

/* 联系我们 start */
.contact-us-box {
    margin-top: .25rem;
    background: #F5F9FA;
    padding-bottom: .625rem;
}

.w2 {
    margin: 0 4rem;
}

.contact-us-title {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    height: 1.5rem;
}

.contact-us-title span {
    color: rgba(55, 70, 104, 1);
    font-family: 'SourceHanSansCN-Medium';
    font-size: .5rem;
}

.content-us-content {
    background: #fff;
    height: 3.5rem;
    padding: .25rem;
}

.map-left {
    float: left;
    width: 44%;
    height: 100%;
}

.map-left img {
    width: 100%;
    height: 100%;
}

.adress-center-box {
    position: relative;
    float: left;
    width: 53%;
    padding-left: .375rem;
    height: 3.5rem;
}

.adress-center {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
}

.app-right {
    position: relative;
    float: left;
    width: 20%;
    height: 2.75rem;
}

.enterprise-name {
    display: block;
    color: rgba(0, 0, 0, 1);
    font-family: 'SourceHanSansCN-Medium';
    font-size: .3rem;
    font-weight: 500;

    padding-bottom: .375rem;
}

.enterprise-info {
    display: block;
    font-size: .225rem;
    font-family: 'SourceHanSansCN-Regular';
    color: rgba(105, 105, 105, 1);
    padding-top: .125rem;
}

.qr-box {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 1.875rem;
    height: 1.875rem;
    text-align: center;
}

.qr-box img {
    width: 100%;
    height: 100%;
}

.qr-box span {
    display: block;
    font-family: 'SourceHanSansCN-Regular';
    color: rgba(0, 0, 0, 1);
    font-size: .175rem;
}

/* 联系我们 end */

.cooperate-p h4 {
    color: rgba(55, 70, 104, 1) !important;
    font-family: 'SourceHanSansCN-Medium' !important;
    font-size: .5rem !important;
    margin: .375rem 0 !important;
}