.a-banner {
    height: 540px;
    background: url(../images/banner_about.jpg) no-repeat center center;
    background-size: cover;
    position: relative;
}
 
.banner-box {
    width: 1200px;
    height: 100%;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    z-index: 2;
}
.about-text {
    width: 600px;
    position: absolute;
    top: 50%;
    left: 0;
    transform: translate(0, -50%);
}

.about-text h1 {
    font-size: 45px;
    font-weight: bold;
    color: #19293A;
    padding: 20px;
    display: block;
}

.about-text span {
    font-size: 18px;
    padding: 15px;
    color: #303133;
    /* margin-bottom: 40px; */
    display: block;
}

.about_psd {
    width: 540px;
    height: 450px;
    background: url(../images/about_psd.png) no-repeat center center;
    background-size: cover;
    position: absolute;
    /* top: 50%; */
    bottom: 0;
    right: 0;
    /* transform: translate(0, -50%); */
}

@media screen and (max-width:768px) {

    /* ABOUT 关于同城 */
    .a-banner {
        height: 350px;
        background: url(../images/mobile/m_about.jpg) no-repeat center center;
        background-size: cover;
    }

    .banner-box {
        width: 100%;
    }

    .about-text {
        width: 50%;
    }

    .about-text h1 {
        font-size: 24px;
        color: #303133;
    }

    .about-text span {
        font-size: 16px;
        /* padding: 10px; */
        display: none;
    }

    .about_psd {
        display: none;
    }

    .overview .o-content .o-text h1 {
        font-size: 18px;
    }

    .overview .o-content .o-text .text-box {
        border: 0.5px dashed #E1E1E1;
    }

    .overview {
        padding: 0;
    }
    .overview .o-title{
        height: 60px;
        line-height: 60px;
        font-size: 18px;
        color: #303133;
        padding-left: 20px;
        text-align: left;
        border-left: 3px solid #0067ED;
    }
    .overview .o-title::after{
        content: "";
        width: 5px;
        height: 60px;
        position: absolute;
        top: -1px;
        left: 1px;
    }
    .overview .o-title::before{
        font-size: 24px;
        font-weight: bold;
        position: absolute;
        right: 20px;
        top: 50%;
        transform: translate(0, -50%);
    }
    .overview .o-content {
        flex-direction: column;
        padding: 0 0 40px;
        padding-bottom: 0;
    }
    .overview .o-content .o-img {
        width: 100%;
        height: 240px;
        /* display: none; */
    }
    .overview .o-content .o-img img {
        width: 100%;
        height: auto;
    }
    .overview .o-content .o-text {
        width: 100%;
        margin: 0;
        padding: 20px 20px 30px;
    }

    .highlight {
        gap: 10px;
    }

    .highlight .light-list {
        gap: 10px;
    }

    .highlight .light-list .item p {
        font-size: 20px;
    }

    .highlight .light-list .item i {
        font-size: 16px;
    }

    .timelineToggle {
        font-size: 14px;
    }

    .timelinetext {
        margin: 20px;
        text-align: center;
        font-size: 16px;
    }

    .timeline .l-title{
        height: 60px;
        line-height: 60px;
        font-size: 18px;
        color: #303133;
        padding-left: 20px;
        text-align: left;
        border-left: 3px solid #0067ED;
    }
    .timeline .l-title::after{
        content: "";
        width: 5px;
        height: 60px;
        position: absolute;
        top: -1px;
        left: 1px;
    }
    .timeline .l-title::before{
        font-size: 24px;
        font-weight: bold;
        position: absolute;
        right: 20px;
        top: 50%;
        transform: translate(0, -50%);
    }

    .highlight {
        padding: 0 20px;
    }

    .timelineContainer {
        width: calc(100% - 40px);
    }

    .timelineMajorMarker span {
        font-size: 20px !important;
    }

    .timelineMinor dt {
        gap:5px;
    }

    .timelineMajorMarker .mline {
        width: 20px;
    }

    .timelineMinor dt .nline {
        width: 15px;
    }
}