.banner .content {
    top: 0;
    bottom: 0;
    margin: auto;
}

.topMain {
    padding: 1rem 0;
}

.topMain .content {
    margin-top: .5rem;
}

.topMain .content p {
    font-size: var(--overview);
    line-height: var(--lineHeight18);
    color: #333;
    text-align: center;
    margin-bottom: .5rem
}

video {
    width: 100%;
    height: 100%;
}

.videoBox {
    position: relative;
}

.videoBox .play {
    position: absolute;
    top: 0;
    right: 0;
    margin: auto;
    left: 0;
    bottom: 0;
    width: .5rem;
    height: .5rem;
    cursor: pointer;
}

.topMain .videoBox {
    max-width: 8.4rem;
    max-height: 4.74rem;
    margin: 0 auto;
}

.topMain .grid {
    padding: .4rem;
    color: #666;
    font-size: var(--comTextCont);
    line-height: 1.8;
    grid-template-columns: repeat(2, 1fr);
    margin-top: .6rem;
    gap: .2rem;
}

.topMain .grid .item {
    padding: .2rem;
    box-shadow: 0px 0px 50px 0px rgba(0, 0, 0, 0.06);
}

.topMain .grid .item .itemTxt {
    padding-left: .2rem;
    border-left: 3px solid #B81C22;
    height: 100%;
}

.topMain .grid .item .itemTxt p {
    font-size: var(--comTextCont);
    line-height: 1.8;
    color: #666;
    text-align: left;
    margin-bottom: 0;
}

.topMain .grid .item .itemTxt p:not(:last-child) {
    margin-bottom: 30px;
}

.main_box {
    padding: 1rem 0;
}

.main_box .overview {
    text-align: center;
    font-size: var(--overview);
    line-height: var(--lineHeight18);
    color: #333;
    margin-top: .4rem;
}

.cms {
    background: url(../img/znqcSmartDrive/VCG41N1336634612.png) no-repeat top center;
    background-size: 100% 100%;
}

.main_box .flex {
    height: 3.6rem;
    margin-top: .6rem;
}

.main_box .flex .videoBox {
    width: 50%;
    height: 3.6rem;
}

.main_box .flex .textCont {
    width: 50%;
    padding: .4rem .3rem .4rem .3rem;
    height: 3.6rem;
    background-color: #fff;
}

.main_box .flex .textCont .inner {
    overflow-y: auto;
    height: 100%;
    width: 100%;
    padding-right: .3rem;
}

/*定义滚动条高宽及背景
 高宽分别对应横竖滚动条的尺寸*/
.main_box .flex .textCont .inner::-webkit-scrollbar {
    width: .06rem;
    background-color: #F5F5F5;
}

/*定义滚动条轨道
  内阴影+圆角*/
.main_box .flex .textCont .inner::-webkit-scrollbar-track {
    -webkit-box-shadow: inset 0 0 6px rgba(0, 0, 0, 0.2);
    border-radius: 10px;
    background-color: #F5F5F5;
}

/*定义滑块
  内阴影+圆角*/
.main_box .flex .textCont .inner::-webkit-scrollbar-thumb {
    border-radius: 0.3rem;
    background-color: #B81C22;
}

.cms .flex {
    background-color: #fff;
}

.main_box .flex .textCont .tit {
    font-size: var(--comSubTit);
    color: #333;
    margin-bottom: .2rem;
    font-weight: bold;
}

.main_box .flex .textCont .subTit {
    font-size: var(--comTextCont);
    font-weight: bold;
    color: #333;
    line-height: 1.8;
}

.main_box .flex .textCont p {
    color: #666;
    font-size: var(--comTextCont);
    line-height: 1.8;

}

.videoPopup {
    position: fixed;
    width: 100%;
    height: 100vh;
    top: 0;
    left: 0;
    display: none;

}

.videoPopup .mask {
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.4);
}

.videoPopup .innerVideo {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    max-width: 8.4rem;
    height: fit-content;
    margin: auto;
}

.videoPopup video {
    max-width: 8.4rem;
    max-height: 4.74rem;
}

.videoPopup .innerVideo .closeVideo {
    width: 2rem;
    height: .5rem;
    line-height: .5rem;
    text-align: center;
    border-radius: .25rem;
    font-size: 20px;
    margin: 0 auto;
    margin-top: .3rem;
    background-color: #fff;
    cursor: pointer;
}

.face .flex {
    background: #F5F6F7;

}

.face .flex .textCont {
    background: #F5F6F7;
}

.smart .flex {
    background: #F5F6F7;

}

.smart .flex .textCont {
    background: #F5F6F7;
}

.main_box .flex .videoBox video {
    object-fit: cover;
}

.face {
    padding-bottom: 0;
}

@media screen and (max-width: 1024px) {
    .videoPopup .innerVideo .closeVideo {
        width: 100px;
        height: 32px;
        font-size: 14px;
        line-height: 32px;
        border-radius: 16px;
    }

    .topMain .grid .item .itemTxt p:first-child {
        margin-bottom: 15px;
    }
}

@media screen and (max-width: 768px) {
    .topMain .grid {
        grid-template-columns: 1fr;
    }

    .cms .flex {
        flex-direction: column-reverse;
        height: auto;
    }

    .main_box .flex .videoBox {
        width: 100%;
        height: auto;
    }

    .main_box .flex .textCont {
        padding: 15px;
        width: 100%;
        height: auto;
    }

    .main_box .flex .textCont .inner {
        padding-right: 0;
    }

    .face .flex {
        flex-direction: column;
    }

    .main_box .flex {
        height: auto;
    }

    .smart .flex {
        flex-direction: column-reverse;
    }

    .videoBox .play {
        min-width: 30px;
        min-height: 30px;
    }

    .topMain .grid .item .itemTxt {
        border: none;
        padding-left: 0;
    }

    .topMain .grid {
        padding: 0;
    }

    .topMain .grid .item {
        padding: 15px;
    }

    .topMain .grid .item .itemTxt p:first-child {
        margin-bottom: 10px;
    }

    .topMain .videoBox {
        max-height: 100%;
    }
}

@media screen and (max-width: 500px) {
    .topMain .videoBox {
        max-width: 100%;
        margin: 0 auto;
    }
}