.zt-context {
    padding: 70px 0px 0px 0px;
    margin: 0px;
}

.model-box h4 {
    font-size: 36px;
    margin-bottom: 10px;
}

.model-box p {
    font-size: 18px;
}

.model-box .b-title {
    margin-bottom: 40px;
}

/* 音频sdk */
.ysdk-model1 {
    background: url(../images/zt/ypsdk-bg1.jpg) no-repeat center;
    background-size: cover;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    -moz-background-size: cover;
    min-height: 500px;
}

.ysdk-model1 .model-box {
    padding-top: 16%;
}

.ysdk-model1 .model-box>h4 {
    color: #f8f9fa;
}

.ysdk-model1 .model-box>p {
    color: #f8f9fa;
}

.ysdk-model2 .model-box {
    padding-top: 80px;
    text-align: center;
}

.ysdk-model2 .model-box {
    background: url(../images/zt/ypsdk-bg2.jpg) no-repeat center;
    background-size: cover;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    -moz-background-size: cover;
    background-position-y: 20px;
    min-height: 850px;

}

.ysdk-model2 .model-box p {
    color: #343a40;
}

.ysdk-model3 {
    background-color: #f1f1f1;
    padding: 80px 0px;
}

.ysdk-model3 .model-box {
    padding-top: 15%;
    text-align: right;
}

.ysdk-model3 .model-box div {
    margin-top: 20px;
}

.ysdk-model3 .model-box span {
    font-size: 22px;
}

.ysdk-model3 .model-box span.circle {
    display: inline-block;
    font-size: 22px;
    text-align: center;
    border: 1px solid #343a40;
    margin-left: 10px;
    border-radius: 50%;
    width: 80px;
    height: 80px;
    line-height: 30px;
    padding-top: 12px;
}

.ysdk-model3 .model-box span.circle>.sub {
    display: block;
    font-size: 12px;
}

.ysdk-model4 {
    padding: 80px 0px;
}

.ysdk-model4 .model-box {
    padding-top: 15%;
    text-align: left;
}

.ysdk-model5 {
    padding: 80px 0px;
    background: url(../images/zt/ypsdk-bg3.jpg) no-repeat center;
    background-size: cover;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    -moz-background-size: cover;
}

.ysdk-model5 .model-box {
    text-align: center;
}

.ysdk-model5 .model-box h4 {
    color: #f8f9fa;
}

.ysdk-model5 .model-box p {
    color: #f8f9fa;
}

.ysdk-model5 .model-box .model-card {
    text-align: left;
    margin-top: 50px;
}

.ysdk-model5 .model-box .model-card h5 {
    color: #f8f9fa;
    line-height: 40px;
}

.ysdk-model5 .model-box .model-card p {
    font-size: 14px;
    line-height: 25px;
}

.ysdk-model5 .model-box .model-card .body {
    width: 70%;
    padding-left: 30px;
}

.ysdk-model5 .model-box .model-card .img {
    width: 29%;
    text-align: right;
}

.ysdk-model5 .model-box .model-card .img>img {
    margin-left: 20px;
}

.ysdk-model6 {
    padding: 100px 0px;
    background: url(../images/zt/ypsdk-bg4.jpg) no-repeat center;
    background-size: cover;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    -moz-background-size: cover;
}

.ysdk-model6 .model-box {
    text-align: center;
}

.ysdk-model6 .model-box p {
    color: #343a40;
}

.yzz-sdk-card1 {
    margin-top: 30px;
}

.yzz-sdk-card1,
.yzz-sdk-card1 .card-header {
    background-color: transparent;
}

.yzz-sdk-card1 .card-body p {
    font-size: 14px;
}

/* 视频sdk */
.ssdk-model1 {
    background: url(../images/zt/spsdk-bg1.jpg) no-repeat center;
    background-size: cover;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    -moz-background-size: cover;
    min-height: 500px;
}

.ssdk-model1 .model-box {
    padding-top: 16%;
}

.ssdk-model1 .model-box>h4 {
    color: #f8f9fa;
}

.ssdk-model1 .model-box>p {
    color: #f8f9fa;
}

.ssdk-model3 {
    background-color: #f1f1f1;
    padding: 80px 0px;
}

.ssdk-model3 .model-box {
    padding-top: 15%;
    text-align: right;
}

.ssdk-model3 .model-box div {
    margin-top: 20px;
}

.ssdk-model3 .model-box span {
    font-size: 20px;
}

.ssdk-model3 .model-box span.circle {
    display: inline-block;
    font-size: 22px;
    text-align: center;
    border: 1px solid #343a40;
    margin-left: 10px;
    border-radius: 50%;
    width: 80px;
    height: 80px;
    line-height: 30px;
    padding-top: 12px;
}

.ssdk-model3 .model-box span.circle>.sub {
    display: block;
    font-size: 12px;
}

/* 直播sdk */
.zbsdk-model1 {
    background: url(../images/zt/zbsdk-bg1.jpg) no-repeat center;
    background-size: cover;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    -moz-background-size: cover;
    min-height: 500px;
}

.zbsdk-model1 .model-box {
    padding-top: 16%;
}

.zbsdk-model1 .model-box>h4 {
    color: #f8f9fa;
}

.zbsdk-model1 .model-box>p {
    color: #f8f9fa;
}

.zbsdk-model2 {
    padding: 100px 0px;
    text-align: center;
}

.zbsdk-model2 .model-box p {
    color: #343a40;
}

.zbsdk-model3 {
    background: url(../images/zt/zbsdk-bg2.jpg) no-repeat center;
    background-size: cover;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    -moz-background-size: cover;
    padding: 100px 0px;
    text-align: center;
}

.zbsdk-model3 .model-box h4,
.zbsdk-model3 .model-box p {
    color: #f8f9fa;
}

.zb-box {
    margin: 10px;
    background-color: #f8f9fa;

}

.zb-box .body {
    padding: 10px;
    overflow: hidden;
    border-left: 1px solid #ddd;
}

.zb-box .body>h5 {
    font-size: 18px;
    text-align: left;
    position: relative;
    display: inline-block;
    line-height: 35px;
    margin-bottom: 10px;
}

.zb-box .body>h5::before {
    background: #007bff none repeat scroll 0 0;
    bottom: 0;
    content: "";
    height: 2px;
    position: absolute;
    width: 30px;
}

.zb-box .body>p {
    font-size: 12px;
    color: #343a40;
    text-align: left;
}

.zbsdk-model4 {
    padding: 100px 0px;
    text-align: center;
}

/* 即时通讯 */

.txsdk-model1 {
    background: url(../images/zt/txsdk-bg1.jpg) no-repeat center;
    background-size: cover;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    -moz-background-size: cover;
    min-height: 500px;
}

.txsdk-model1 .model-box {
    padding-top: 16%;
}

.txsdk-model1 .model-box>h4 {
    color: #f8f9fa;
}

.txsdk-model1 .model-box>p {
    color: #f8f9fa;
}

.txsdk-model3 {
    background: url(../images/zt/txsdk-bg2.jpg) no-repeat center;
    background-size: cover;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    -moz-background-size: cover;
    min-height: 500px;
    padding: 100px 0px 0px 0px;
}

.txsdk-model3 .model-box h4 {
    color: #f8f9fa;
}

.txsdk-model3 .model-box p {
    color: #f8f9fa;
}

.txsdk-model3 .model-box .row>div {
    margin-top: 30px;
}

.txsdk-model3 .model-box .row span {
    display: inline-block;
    border-radius: 10px;
    padding: 10px 20px;
    color: #f8f9fa;
    margin-bottom: 15px;
}

.txsdk-model3 .model-box .row p {
    font-size: 14px;
}

.txsdk-model3 .model-box .img {
    margin-top: 60px;
}

/* BI */
.bi-model1 {
    background: url(../images/zt/bi-bg1.jpg) no-repeat center;
    background-size: cover;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    -moz-background-size: cover;
    min-height: 600px;
    padding: 200px 0px 0px 0px;
}

.bi-model3 {
    background-color: #f3f5f8;
    padding: 100px 0px;
}

.bi-model3 .body {
    margin-bottom: 20px;
}

.bi-model3 .body h5 {
    font-size: 18px;
    text-align: left;
    position: relative;
    display: inline-block;
    line-height: 40px;
}

.bi-model3 .body h5::before {
    background: #007bff none repeat scroll 0 0;
    top: 0;
    content: "";
    height: 2px;
    position: absolute;
    width: 30px;
}

.bi-model3 .body p {
    font-size: 14px;
    line-height: 20px;
}

.bi-model4 {
    background: url(../images/zt/bi-bg1.jpg) no-repeat center;
    background-size: cover;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    -moz-background-size: cover;
    min-height: 600px;
    padding: 100px 0px;
}

.bi-model4 .model-box h4,
.bi-model4 .model-box p {
    color: #f8f9fa;
}

.bi-model4 .body {
    padding: 40px 40px;
    margin-top: 20px;
    background-color: rgba(0, 0, 0, .4);
}

/* 直播 */
.zb-model1 {
    background: url(../images/zt/zb-bg1.jpg) no-repeat center;
    background-size: cover;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    -moz-background-size: cover;
    min-height: 600px;
    padding: 200px 0px 0px 0px;
}

.zb-model1 .model-box h4,
.zb-model1 .model-box p {
    color: #f8f9fa;
}

.zb-model2 {
    padding-top: 60px
}

.zb-model2 .body {
    padding-top: 80px;
    text-align: right;
}

.zb-model2 .body h5,
.zb-model2 .body p {
    color: #343a40;
}

.zb-model2 .body h5 {
    font-size: 30px;
    font-weight: 400;
    line-height: 50px;
}

.zb-model2 .body span {
    display: inline-block;
    color: #f8f9fa;
    background-color: #343a40;
    border-radius: 10px;
    padding: 5px 15px;
    margin-bottom: 10px;
}

.zb-model3 {
    background-color: #333333;

}

.zb-model3 .body {
    padding: 0px 50px;
}

.zb-model3 .body .title {
    padding-top: 100px;
    text-align: center;
    color: #f8f9fa;
}

.zb-model3 .body .title h4 {
    line-height: 40px;
}

.zb-model3 .body .title p {
    color: #f8f9fa;
}

.ztzb-box {
    margin-bottom: 50px;
}

.ztzb-box .ztzb-content {
    padding-left: 30px;
}

.ztzb-box .ztzb-content h5 {
    font-weight: 400;
    line-height: 35px;
}

.ztzb-box .ztzb-content p {
    font-size: 14px;
}

.zb-model4 {
    padding: 100px 0px;
    text-align: center;
}

.zb-model4 .model-box h4,
.zb-model4 .model-box p {
    color: #343a40;
}

.zb-model4 .zb-item1 {
    width: 19.9%;
}

.zb-model5 {
    padding: 100px 0px;
    text-align: center;
    background-color: #f1f1f1;
}

.zb-model5 .model-box h4,
.zb-model5 .model-box p {
    color: #343a40;
}

/* 智能会议室 */
.hys-model1 {
    background: url(../images/zt/hys-bg1.jpg) no-repeat center;
    background-size: cover;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    -moz-background-size: cover;
    min-height: 600px;
    padding: 200px 0px 0px 0px;
}

.hys-model1 .model-box h4,
.hys-model1 .model-box p {
    color: #f8f9fa;
}

.hys-model2 {
    padding: 100px 0px;
    text-align: center;
}

.hys-model2 .model-box h4,
.hys-model2 .model-box p {
    color: #343a40;
}

.hys-box {
    margin-bottom: 15px;
}

.hys-box .hys-content {
    background-color: rgba(0, 0, 0, .8);
}

.hys-box .hys-content>p {
    color: #f8f9fa;
    line-height: 40px;
}

.hys-model3 {
    background: url(../images/zt/hys-bg2.jpg) no-repeat center;
    background-size: cover;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    -moz-background-size: cover;
    min-height: 600px;
    padding: 200px 0px 0px 0px;
}

.hys-model3 .model-box h4,
.hys-model3 .model-box p {
    color: #f8f9fa;
}

@media(max-width: 320px) {}

@media(max-width: 480px) {

    .model-box h4 {
        font-size: 28px;
    }

    .model-box p {
        font-size: 16px;
    }

    .ysdk-model6 {
        padding: 50px 0px;
    }

    .yzz-sdk-card1 {
        margin-top: 10px;
    }

    .ssdk-model3 .model-box span {
        font-size: 16px;
        display: block;
        line-height: 39px;
    }

    .zbsdk-model2 {
        padding: 50px 0px;
    }

    .zbsdk-model3 {
        padding: 50px 0px;
    }

    .zbsdk-model4 {
        padding: 50px 0px;
    }

    .txsdk-model3 {
        padding: 50px 0px 0px 0px;
    }

    .bi-model1 {
        min-height: 400px;
        padding-top: 150px;
    }

    .zb-model3 .body {
        padding: 0px;
    }

}

@media(max-width: 720px) {
    .zt-context {
        padding: 65px 0px 0px 0px;
    }

    .ysdk-model1 {
        background-position-x: -700px;
        min-height: 400px;
    }

    .ssdk-model1 {
        background-position-x: -700px;
        min-height: 400px;
    }

    .zbsdk-model1 {
        background-position-x: -700px;
        min-height: 400px;
    }

    .zb-model1 {
        background-position-x: -700px;
        min-height: 400px;
    }

    .hys-model1 {
        background-position-x: -700px;
        min-height: 400px;
    }
    .hys-model3 {
        min-height: 400px;
    }

    .ysdk-model2 .model-box {
        min-height: 400px;
        padding-top: 30px;
    }

    .txsdk-model1 {
        background-position-x: -700px;
        min-height: 400px;
    }

    .zb-model2 .body {
        padding: 50px 0px;
    }

    .zb-model4 {
        padding: 50px 0px;
    }

    .zb-model5 {
        padding: 50px 0px;
    }

    .hys-model2 {
        padding: 50px 0px;
    }
}

@media(max-width: 768px) {
    .ysdk-model1 {
        background-position-x: -700px;
    }

    .ssdk-model1 {
        background-position-x: -700px;
    }

    .zbsdk-model1 {
        background-position-x: -700px;
    }

    .txsdk-model1 {
        background-position-x: -700px;
    }

    .zb-model1 {
        background-position-x: -800px;
    }

    .hys-model1 {
        background-position-x: -800px;
    }

    .ysdk-model3,
    .ysdk-model3 .model-box,
    .ysdk-model4,
    .ysdk-model4 .model-box {
        text-align: center;
    }

    .ysdk-model4 .model-box {
        padding-top: 0px;
        padding-bottom: 50px;
    }

    .ssdk-model3,
    .ssdk-model3 .model-box {
        text-align: center;
    }

    .zb-model2 .body h5 {
        font-size: 24px;
        line-height: 40px;
    }

    .zb-model4 .zb-item1 {
        width: 49.9%;
    }

}

@media (min-width: 992px) {
    .zb-model4 .zb-item1 {
        width: 33.33%;
    }
}

@media(min-width:1200px) {
    .zb-model4 .zb-item1 {
        width: 19.9%;
    }
}