.app-main {
    padding-bottom: 100px;
}

.section-banner {
    height: 380px;
    display: flex;
    padding-top: 120px;
    justify-content: center;
    background: url("../../images/sub-pc/about-us-banner.jpg") no-repeat center / cover;
}

.section-title {
    height: 83px;
    background: url(../../images/sub-pc/about-us-title.png) no-repeat left / 189px 83px;
}

.breadcrumb {
    margin-top: 12px;
}

.section-content-container {
    margin-top: 70px;
    background: url("../../images/sub-pc/about-us-bg.png") no-repeat left top / 1546px 700px;
    padding-top: 80px;
    padding-left: calc((100% - 1400px) / 2);
}

@media (max-width: 1499px) {
    .section-content-container {
        padding-left: calc((100% - 1200px) / 2);
    }
}

.section-content {
    background: #FFFFFF;
    box-shadow: 0px 5px 30px 0px rgba(0, 0, 0, 0.05);
    border-radius: 20px 0px 0px 20px;
    padding-top: 20px;
    padding-bottom: 80px;
}

.content-left {
    width: 251px;
    height: 499px;
    border-right: 1px solid #ddd;
}

.content-left a {
    height: 97px;
    line-height: 97px;
    padding-right: 70px;
}

.content-left a:hover {
    color: #D1921B;
}

.content-left a.on {
    background: url("../../images/sub-pc/about-us-on.png") no-repeat left center / 250px 970px;
    color: #D1921B;
}

.content-left a.on:after {
    content: "";
    display: block;
    width: 5px;
    height: 97px;
    background: #DDAF59;
    position: absolute;
    right: -1px;
    top: 0;
}

.content-right {
    width: 1040px;
    margin-left: 110px;
}

.about-us-title {
    margin: 20px 0 40px;
    font-size: 28px;
    line-height: 40px;
}

.about-us-desc p {
    line-height: 32px;
}

.about-us-desc p + p {
    margin-top: 32px;
}

.about-us-number {
    margin-top: 60px;
    padding-top: 8px;
}

.about-us-number li + li {
    margin-left: 150px;
}

.number-digit {
    font-size: 60px;
    line-height: 70px;
}

.number-text {
    line-height: 28px;
    margin-top: 16px;
}

.certificate-container {
    margin-top: 83px;
    /*width: 741px;*/
    height: 582px;
    background: url("../../images/sub-pc/certificate.jpg") no-repeat center / 741px 520px;
    background-position-y: calc(22px + 43px);
}

.certificate-title {
    height: 22px;
    background: url("../../images/sub-pc/certificate-title.png") no-repeat center / 468px 16px;
    margin-bottom: 43px;
}

.certificate-container img {
    display: none;
}