.banner {
    width: 100%;
    height: 93px;
    padding-top: 40px;
    background-color: #3e82f8;
    position: relative;
}
.tt-box {
    width: 160px;
    min-height: 50px;
    margin: 0 auto;
    padding-left: 90px;
    background: url("../../images/technology_center/banner_logo.png") left center no-repeat;
    color: #fff;
    text-align: left;
}
.tt-tit_cn {
    margin-bottom: 5px;
    font-size: 24px;
}
.tt-tit_eng {
    font-size: 18px;
}
.delta {
    width: 0px;
    height: 0;
    margin: 43px auto 0;
    border-top: 16px solid #3E82F8;
    border-left: 12px solid rgba(0, 0, 0, 0);
    border-right: 12px solid rgba(0, 0, 0, 0);
    display: block;
    position: absolute;
    z-index: 111;
    left: 50%;
    bottom: -16px;
}
.container {
    width: 100%;
    padding: 100px 0;
}
.container1 {
    background-color: #f5f5f5;
}
.container2 {
    background-color: #fff;
}
.subHead{
    text-align: center;
    margin-bottom: 50px;
}
.subHead .cn {
    margin-bottom: 20px;
    font-size: 42px;
    color: #333;
}
.subHead .summary {
    font-size: 14px;
    color: #666;
}
.summary span {
    padding: 0 10px;
}
.summary .hr {
    display: inline-block;
    width: 20px;
    height: 4px;
    border-top:1px solid #dcdcdc;
}

/* exports */
.experts-list {
    height: 350px;
    overflow: hidden;
}
.experts-list li {
    float: left;
    width: 232px;
    height: 100%;
    /*margin-right: 50px;*/
    margin-right: 20px;
}
.export_photo {
    /*width: 100%;*/
    height: 260px;
}
.export_info {
    padding: 7px;
    background-color: #222d49;
    color: #fff;
    text-align: center;
}
.export_name {
    line-height: 20px;
    font-size: 14px;
    font-weight: 900;
    margin-bottom: 4px;
}
.export_summary {
    height: 50px;
    line-height: 18px;
    font-size: 12px;
    overflow: hidden;
    margin-top: 5px;
}
/* car brand */
.car_brand-list {
    width: 100%;
    overflow: hidden;
}
.car_brand-list li {
    float: left;
    width: 139px;
    height: 81px;
    border: 1px solid #f5f5f5;
}
.car_brand_img {
    width: 100%;
    height: 100%;
}
/*special topic*/
.topic-content {
    width: 1019px;
    overflow: hidden;
}
.topic_item {
    width: 314px;
    margin-right: 23px;
    background-color: #fff;
    float: left;
}
.stb_item .topic_img-box {
    padding: 8px;
}
.topic_img {
    width: 100%;
    height: 100%;
}
.stb_item .topic_info {
    padding: 8px 18px;
}
.stb_item .topic_name {
    line-height: 21px;
    font-size: 14px;
    font-weight: 900;
    color: #333;
    text-align: left;
}
.stb_item .topic_summary {
    height: 40px;
    line-height: 20px;
    overflow: hidden;
}
.topic-list {
    float: left;
}
.topic-list li {
    margin: 0 8px;
    border-bottom: 1px solid #dcdcdc;
    overflow: hidden;
}
.topic-list .last {
    border: 0;
}
.topic-list .topic_img-box {
    width: 121px;
    height: 93px;
    padding: 8px 8px 8px 0;
    float: left;
}
.topic-list .topic_info {
    width: 156px;
    padding: 8px 0 8px 8px;
    float: left;
}
.topic-list .topic_name {
    margin-bottom: 5px;
    font-size: 14px;
    color: #333;
}
.topic-list .topic_summary {
    height: 74px;
    line-height: 19px;
    overflow: hidden;
}
.tech_train-list {
    width: 992px;
    margin-left: -1px;
    overflow: hidden;
}
.tech_train-list li {
    width: 206px;
    height: 80px;
    padding: 20px;
    text-align: center;
    background-color: #f5f5f5;
    border: 1px solid #fff;
    float: left;
}
.tt_summary  {
    line-height: 15px;
}
.tt_class {
    margin: 20px 0 10px;
    font-size: 16px;
    font-weight: 900;
}
.tt_1 {
    color: #3c73dd;
}
.tt_2 {
    color: #805bd0;
}
.tt_3 {
    color: #109d50;
}
.tt_4 {
    color: #fa9e00;
}
.tt_5 {
    color: #fc9b00;
}
.tt_6 {
    color: #5d6d89;
}
.tt_7 {
    color: #f7383e;
}
.tt_8 {
    color: #40aedc;
}
/*equipments*/
.equipments-content {
    width: 1074px;
    margin: 0 auto;
    overflow: hidden;
}
.equipments-box {
    width: 990px;
    height: 287px;
    float: left;
    overflow: hidden;
}
.equipments-list {
    height: 100%;
}
.equipments-list li {
    width: 232px;
    margin-right: 20px;
    float: left;
}
.equipments-list img {
    width: 232px;
    height: 232px;
}
.tt_btn {
    display: inline-block;
    width: 22px;
    height: 287px;
    float: left;
}
.left_btn {
    margin-right: 20px;
    background: url("../../images/technology_center/left_btn.png") center no-repeat;
}
.left_btn:hover {
    background: url("../../images/technology_center/left_sel_btn.png") center no-repeat;
}
.right_btn {
    margin-left: 20px;
    background: url("../../images/technology_center/right_btn.png") center no-repeat;
}
.right_btn:hover {
    background: url("../../images/technology_center/right_sel_btn.png") center no-repeat;
}
.part_name {
    height: 40px;
    line-height: 20px;
    padding: 5px;
    text-align: center;
    overflow: hidden;
    background-color: #FFF;
}
/*top-nav*/
.top_nav {
    margin: -155px 0 0  570px;
    background-color: #fff;
    position: fixed;
    left: 50%;
    top: 50%;
}
.top_nav li {
    width: 58px;
    height: 28px;
    line-height: 16px;
    border: 1px solid #E5E5E5;
    padding: 15px 0;
    text-align: center;
    color: #666;
    cursor: pointer;
}
.top_nav li.cur {
    width: 60px;
    height: 30px;
    border: 0;
    color: #fff;
    background-color: #5593ff;
}
.top_nav li.top {
    padding-top: 30px;
    padding-bottom: 0;
    text-align: center;
    background: #e5e5e5 url("../../images/join/top.png") center 16px no-repeat;
}

 /*专家图*/
.wrapper {
    overflow: visible;
}
.carousel {
    height: 350px;
    box-sizing: border-box;
    position: relative;
}
.viewport {
    float: left;
    width: 988px;
    height: 100%;
    overflow: hidden;
}
.viewport .experts-list-container {
    position: relative;
    left: 0;
    float: left;
    margin: 0;
    padding: 0;
}
.experts-list-container .box {
    position: relative;
    float: left;
    width: 232px;
    height: 350px;
    margin-right: 20px;
    list-style-type: none;
}
.box .mask {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
    opacity: .3;
}
.box:hover .mask {
    background: #000000;
    transition: all .4s;
}
.box .desc {
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    padding: 0 16px 16px 16px;
    background: rgba(34,45,73,0.80);
    font-size: 14px;
    color: #FFF;
    box-sizing: border-box;
}
.desc .name {
    font-family: MicrosoftYaHei-Bold;
    font-weight: bold;
    letter-spacing: 1px;
    text-align: center;
    margin: 8px 0;
}
.desc .detail {
    font-family: MicrosoftYaHei;
    letter-spacing: 0;
    line-height: 22px;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    overflow: hidden;
    margin: 0;
    padding: 0;
}
.box:hover .detail {
    -webkit-line-clamp: initial;
}
.operator {
    position: absolute;
    width: 62px;
    height: 133px;
    margin-top: 108px;
}

.operator.pre {
    left: -62px;
}

.operator.next {
    right: -62px;
}

.operator .tt_btn {
    width: 100%;
    height: 100%;
    margin: 0;
}

.operator .left_btn.disabled:hover {
    cursor: not-allowed;
   background: url("../../images/technology_center/left_btn.png") center no-repeat;
}

.operator .right_btn.disabled:hover {
    cursor: not-allowed;
    background: url("../../images/technology_center/right_btn.png") center no-repeat;
}