.topic {
    width: 100%;
    white-space: normal;
    margin-top: 0.3rem;
}

.topic ul {
    display: inline-block;
    width: 100%;
    font-size: 0;
}

.topic ul li {
    display: inline-block;
    text-align: center;
    width: 2.96rem;
    /* height: 2.06rem; */
    /* background-size: 100%;
    background-repeat: no-repeat;
    background-position: center center; */
    margin-bottom: 0.235rem;
    margin-right: 0.2rem;
    margin-right: 0.15rem\9;
    vertical-align: top;
    transition: .2s linear;
    position: relative;
    overflow: hidden;
}

.topic ul li .li_wrap {
    width: 100%;
    padding-bottom: 69.594%;
}

.topic ul li img {
    -webkit-transition: .2s linear;
    -moz-transition: .2s linear;
    -o-transition: .2s linear;
    -ms-transition: .2s linear;
    transition: .2s linear;
    width: 100%;
    position: absolute;
    left: 0;
    top: 0;
    /* height: 100%; */
}

.topic ul li:hover img {
    -webkit-transform: scale(1.2);
    -moz-transform: scale(1.2);
    -o-transform: scale(1.2);
    -ms-transform: scale(1.2);
    transform: scale(1.2);
}

.topic ul li a {
    /* display: inline-block; */
    display: block;
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
}

.topic ul li .topic_profile {
    box-sizing: border-box;
    /* width: 2.96rem; */
    width: 100%;
    height: 100%;
    /* height: 2.06rem; */
    padding-top: .8rem;
    background-color: rgb(0, 0, 0, 0.2);
    color: #ffffff;
    /* display: table-cell;
  vertical-align: middle; */
    -webkit-transition: 0.2s linear;
    -moz-transition: 0.2s linear;
    -o-transition: 0.2s linear;
    -ms-transition: 0.2s linear;
    transition: 0.2s linear;
}

.topic ul li .topic_profile h3 {
    display: block;
    font-size: 0.16rem;
    padding-bottom: 0.03rem;
}

.topic ul li .topic_profile div {
    width: 100%;
    /* display: none; */
}

.topic ul li .topic_profile span {
    display: inline-block;
    margin-top: 0.03rem;
    margin-bottom: 0.08rem;
    width: 0.17rem;
    height: 0.04rem;
    background-color: #ffffff;
}

.topic ul li .topic_profile p {
    display: inline-block;
    text-align: center;
    width: 80%;
    font-size: 0.13rem;
    line-height: 0.2rem;
}

.topic ul li:hover .topic_profile {
    padding-top: .5rem;
    background-color: rgb(0, 0, 0, 0.5);
}

.topic ul li .topic_profile div {
    -webkit-transition: 0.2s linear;
    -moz-transition: 0.2s linear;
    -o-transition: 0.2s linear;
    -ms-transition: 0.2s linear;
    transition: 0.2s linear;
    opacity: 0;
    visibility: hidden;
}

.topic ul li:hover .topic_profile div {
    display: block;
    visibility: visible;
    opacity: 1;
}

.main {
    text-align: left;
}

.search_box {
    display: inline-block;
    width: auto;
    float: right;
    margin-top: .1rem;
}

.search_box input {
    width: 2rem;
    float: left;
}

.search_box button {
    width: .42rem;
    margin-left: .05rem;
    float: left;
    text-align: center;
    border-radius: 3px;
    display: table-cell;
    vertical-align: middle;
    text-align: center;
    line-height: 0;
}

.search_box button img {
    width: .2rem;
    height: .2rem;
}


/* 故障分析 */

.fault {
    width: 100%;
    white-space: normal;
    overflow-x: auto;
}

.fault table {
    width: 935px;
    border-top: 2px solid #0ea4e6;
    margin-top: 0.3rem;
    overflow-x: auto;
    text-align: center;
}

.fault table thead th {
    font-size: 0.15rem;
    color: #2a2a2a;
    font-weight: bold;
    height: 0.45rem;
    vertical-align: middle;
    border-bottom: 1px solid #e6e6e6;
}

.fault table thead th:first-child {
    text-align: left;
    box-sizing: border-box;
    padding-left: 1.4rem;
}

.fault table tbody tr td {
    font-size: 0.14rem;
    color: #3d3d3d;
    vertical-align: middle;
    /* height: .43rem; */
    border-bottom: 1px solid #e6e6e6;
    padding: 0.12rem 0;
}

.fault table tbody tr td .td_download {
    font-size: .2rem;
}

.fault table tbody tr td.t_t {
    box-sizing: border-box;
    text-align: left;
    padding-left: 0.25rem;
    width: 50%;
}

.fault table tbody tr td+td,
.fault table tbody tr td+td+td {
    width: 18%;
}

.fault table tbody tr td+td+td+td {
    width: 14%;
}

.fault a {
    cursor: pointer;
}


/* 故障分析 end */


/* 技术视频 */

.vedio {
    width: 100%;
    margin-top: 0.35rem;
}

.vedio ul {
    width: 100%;
    text-align: left;
    font-size: 0;
}

.vedio ul li {
    display: inline-block;
    width: 2.96rem;
    border: 1px solid #dddddd;
    margin-right: 0.2rem;
    margin-right: 0.12rem\9;
    margin-bottom: 0.2rem;
    vertical-align: top;
    border-radius: 4px;
}

.vedio ul li .play_box {
    position: relative;
    width: 100%;
    cursor: pointer;
    border-radius: 4px 4px 0 0;
}

.vedio ul li .play_box img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 4px 4px 0 0;
}

.vedio ul li .play_box .i_mask {
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.2);
    position: absolute;
    left: 0;
    top: 0;
    -webkit-opacity: 0;
    -moz-opacity: 0;
    -khtml-opacity: 0;
    opacity: 0;
    -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=0)";
    filter: alpha(opacity=0);
    filter: progid: DXImageTransform.Microsoft.Alpha(Opacity=0);
}

.vedio ul li .play_box .i_mask img {
    position: absolute;
    font-size: 0.5rem;
    line-height: 0.6rem;
    height: 0.6rem;
    width: 0.6rem;
    display: inline-block;
    left: 0;
    top: 0;
    bottom: 0;
    right: 0;
    margin: auto;
    -webkit-transition: 0.15s linear;
    -moz-transition: 0.15s linear;
    -o-transition: 0.15s linear;
    -ms-transition: 0.15s linear;
    transition: 0.15s linear;
    -webkit-transform-origin: center center;
    -moz-transform-origin: center center;
    -o-transform-origin: center center;
    -ms-transform-origin: center center;
    transform-origin: center center;
}

.vedio ul li:hover .play_box .i_mask {
    -webkit-opacity: 1;
    -moz-opacity: 1;
    -khtml-opacity: 1;
    opacity: 1;
    -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=100)";
    filter: alpha(opacity=100);
    filter: progid: DXImageTransform.Microsoft.Alpha(Opacity=100);
    -webkit-transition: 0.2s linear;
    -moz-transition: 0.2s linear;
    -o-transition: 0.2s linear;
    -ms-transition: 0.2s linear;
    transition: 0.2s linear;
}

.vedio ul li:hover .play_box .i_mask img {
    -webkit-transform: scale(1.2);
    -moz-transform: scale(1.2);
    -o-transform: scale(1.2);
    -ms-transform: scale(1.2);
    transform: scale(1.2);
}

.vedio ul li:hover {
    box-shadow: 2px 3px 4px 0.5px rgba(0, 0, 0, 0.1);
}

.vedio ul li .con {
    width: 100%;
    box-sizing: border-box;
    padding: 0.12rem 0.1rem .12rem .13rem;
}

.vedio ul li .con .con_t {
    display: inline-block;
    width: 100%;
    font-size: 0.13rem;
    text-align: left;
    color: #2a2a2a;
    margin-bottom: 0.12rem;
}

.vedio ul li .con div {
    width: 100%;
}

.vedio ul li .con div span,
.vedio ul li .con div p {
    display: inline-block;
    width: auto;
}

.vedio ul li .con div .v_class {
    float: left;
    color: #ffffff;
    font-size: 0.12rem;
}

.vedio ul li .con div .v_class span {
    display: inline-block;
    padding: 0.02rem 0.08rem;
    color: #ffffff;
    border-radius: 2px;
    margin-right: 0.05rem;
}

.vedio ul li .con div .v_class p,
.vedio ul li .con div .view {
    color: #666666;
    font-size: 0.12rem;
}

.vedio ul li .con div .view {
    float: right;
}

.video_play {
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: none;
}

.video_play video {
    max-width: 8rem;
    width: 100%;
    height: auto;
    position: fixed;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    margin: auto;
}

.company_bg {
    background-color: #ff7c00;
}

.pro_bg {
    background-color: #00a2b9;
}

.tech_bg {
    background-color: #367dd5;
}


/* 技术视频  end */


/* 常见问题 */

.problem {
    width: 100%;
    white-space: normal;
    margin-top: 0.3rem;
    border-top: 2px solid #0ea4e6;
}

.problem .problem_details {
    box-sizing: border-box;
    width: 100%;
    font-size: 0.14rem;
    text-align: left;
    border-bottom: 1px solid #e6e6e6;
    padding: 0.1rem 0 0.05rem 0.15rem;
    vertical-align: top;
}

.problem_bg {
    background-color: #f6f9fc;
}

.problem .problem_details .problem_title {
    display: inline-block;
    width: 100%;
    cursor: pointer;
}

.problem .problem_details .problem_title p {
    display: inline-block;
    width: auto;
    float: left;
    line-height: 0.25rem;
    color: #3d3d3d;
    width: 90%;
    vertical-align: top;
}

.problem .problem_details img {
    width: .15rem;
    color: #4b93d5;
    text-align: right;
    float: left;
    margin-right: 0.05rem;
    margin-top: 0.05rem;
    display: none;
}

.problem .problem_details img.show {
    display: inline-block;
}

.problem .problem_details .answer {
    padding-left: 0.3rem;
    width: 85%;
    display: none;
    margin-bottom: 0.08rem;
}

.problem .problem_details .answer p {
    display: inline-block;
    width: 100%;
    font-size: 0.14rem;
    line-height: 0.25rem;
    padding: 0.05rem 0;
    color: #666666;
}

.problem .problem_details .answer span+span {
    margin-top: 0.1rem;
}

.problem .problem_details .answer span p {
    display: inline-block;
    width: auto;
}


/* 常见问题 end */

@media screen and (min-width:1100px) {
    .topic ul li {
        margin-right: 0.235rem;
    }
    .vedio ul li {
        margin-right: 0.2rem;
    }
    .topic ul li:nth-child(3n),
    .vedio ul li:nth-child(3n) {
        margin-right: 0;
    }
}

@media screen and (max-width:750px) {
    .search_box {
        display: none;
    }
    .vedio ul,
    .topic ul {
        width: 100%;
        text-align: center;
    }
    .vedio ul li {
        margin-bottom: .25rem;
        margin-right: 0;
        width: 100%;
    }
    .vedio ul li .play_box .i_mask {
        -moz-opacity: 1;
        -khtml-opacity: 1;
        opacity: 1;
        -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=100)";
        filter: alpha(opacity=100);
        filter: progid: DXImageTransform.Microsoft.Alpha(Opacity=100);
    }
    .topic ul li {
        margin-right: 0;
        width: 100%;
    }
    .topic ul li .topic_profile div {
        display: block;
    }
    .search_box {
        width: 100%;
    }
    .search_box input {
        width: 80%;
        margin-left: 0;
    }
    .topic ul li .topic_profile {
        padding-top: .8rem;
    }
    .topic ul li .topic_profile div {
        opacity: 1;
        visibility: visible;
    }
}