body {
    background: #fff !important;
}
@charset "UTF-8";
/*初始化样式*/

a, a:hover, a:link, a:active {
    text-decoration: none;
    color: #333;
    cursor: pointer;
}
ul, li {
    list-style: none;
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font: 12px/1.5 "Microsoft YaHei", "Helvetica Neue", "Hiragino Sans GB", arial, helvetica, sans-serif;
}
.lock_more{
    display: block;
    margin:26px auto 0;
    width: 140px;
    height: 40px;
    line-height: 40px;
    border-radius: 5px;
    text-align: center;
    color: #ce0505;
    border:1px solid #ce0505;
    font-size: 14px;
}

.lock_more:hover{
    background: #ce0505;
    color: #fff;
}
.public_kf{
    margin-top: 30px;
    text-align: center;
    width: 100%;
    color: #333;
}
.public_kf.cover_kf{
    margin-top: 10px;
}
.public_kf .kf{
    border-radius: 20px;
    display: inline-block;
    font-size: 18px;
    text-align: center;
    color: #fff;
    padding:5px 20px;
    background: red;
}
/*公共标题*/
.public_title{
    font-size: 30px;
    text-align: center;
    width: 100%;
    color: #333;
    margin-bottom: 35px;
    font-weight: bold;
}

.public_subtitle{
    font-size: 14px;
    text-align: center;
    width: 100%;
    color: #999;
}

.w_1200{
    width: 1200px;
    margin:0 auto;
}

/*banner*/
.page_banner{
    width: 100%;
    position: relative;
}

.page_banner .page_icon{
    display: block;
    width: 100%;
}

/*知乎营销推广*/
.cover{
    width: 100%;
    background: url(../cctvimg/5.png)center no-repeat;
}
.cover-item{
    margin: 0 auto;
    width: 900px;
    height: 500px;
}
.cover_list{
    width: 100%;
    display: flex;
    text-align: center;
}
.cover_list .cover_item{
    width: 380px;
    margin-right: 30px;
    margin-top:190px;
    padding: 30px 30px 50px;
    position: relative;
}
.cover_list .cover_item .title{
    font-size: 40px;
    font-weight: bold;
}
.cover_list .cover_item .text{
    font-size: 18px;
}

/*知乎营销推广*/
.advantage{
    width: 100%;
    background: #f94848;
}
.advantage-item{
    margin: 0 auto;
    padding-bottom: 50px;
}
.advantage_list{
    width: 100%;
    display: flex;
}
.advantage_list .advantage_item{
    width: 598px;
    display: flex;
    padding: 30px;
    background: #fff;
    border:1px solid #ededed;
    position: relative;
}
.advantage_list .advantage_item .title{
    width: 100px;
    font-size: 40px;
    font-weight: bold;
}
.advantage_list .advantage_item .text{
    flex: 1;
    font-size: 18px;
}
.advantage_list .advantage_item .text .text-title{
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 5px;
}
.advantage_list .advantage_item .text .text-con{
    font-size: 15px;
}
.advantage_list .advantage_item .jiao{
    position: absolute;
    width: 40px;
    height: 40px;
    text-align: center;
    line-height: 40px;
    font-size: 16px;
    font-weight: bold;
    color: #fff;
}
.advantage_list .advantage_item .jiao1{
    background-color:#f15454;
    border-radius: 40px 0 0 0;
    right: 0;
    bottom: 0;
}
.advantage_list .advantage_item .jiao2{
    background-color: red;
    border-radius: 0 40px 0 0;
    left: 0;
    bottom: 0;
}
.advantage_list .advantage_item .jiao3{
    background-color: red;
    border-radius: 0 0 0 40px;
    right: 0;
    top: 0;
}
.advantage_list .advantage_item .jiao4{
    background-color: #f15454;
    border-radius: 0 0 40px 0;
    left: 0;
    top: 0;
}

    /*知乎营销推广*/
.promote{
    padding: 50px 0;
}
.promote_list{
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    box-shadow: 0px 0px 10px -2px #c7c7c7;
    padding: 20px;
}

.promote_list .promote_item{
    width: 386px;
    margin-top: 30px;
    text-align: center;
}

.promote_list .promote_item:nth-child(3n){
    margin-right: 0;
}

.promote_list .promote_item .title{
    width: 100%;
}

.promote_list .promote_item .title video{
    width: 360px;
}

.promote_list .promote_item .title span{
    font-size: 20px;
    color: #333;
    font-weight: bold;
    margin-left: 8px;
}

.promote_list .promote_item .text{
    font-size: 16px;
    color: #666;
    line-height: 24px;
    margin-top: 10px;
}

.promote_list .promote_item .clickcon{
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 38px;
    background: #ce0505;
    color: #fff;
    line-height: 38px;
    text-align: center;
    display: none;
    font-size: 14px;
}

.promote_list .promote_item:hover .clickcon{
    display: block;
}

/*知乎平台优势*/
.customized{
    width: 100%;
    background: #f3f8ff;
    padding: 50px 0;
}

.customized .customized_list{
    width: 100%;
    display: flex;
    margin-top: 30px;
}

.customized .customized_list .customized_item{
    background: #fff;
    flex: 1;
    margin-right: 30px;
    padding: 10px 10px 30px;
    text-align: center;
}

.customized .customized_list .customized_item:last-child{
    margin-right: 0;
}

.customized .customized_list .customized_item .icon{
    width: 145px;
    height: 145px;
}

.customized .customized_list .customized_item .title{
    display: block;
    text-align: center;
    font-weight: bold;
    font-size: 16px;
    margin-top: 20px;
}

.customized .customized_list .customized_item .text{
    font-size: 14px;
    color: #666;
    margin:10px auto 0;
    text-align: center;
}

.play{
    background: #f3f8ff;
    width: 100%;
    padding:30px 0;
}

.play .play_content{
    width: 100%;
    text-align: center;
}

.play .play_content .play_img{
    width: 540px;
}

.play .play_content .play_img img{
    display: block;
    height: 350px;
    margin: 0 auto;
}

.play .play_content .play_list{
    background: #fff;
}

.play .play_content .play_list .play_item{
    width: 197px;
    height: 80px;
    display: inline-block;
    border-bottom: 1px solid #ccc;
    border-right: 1px solid #ccc;
    line-height: 80px
}
.play .play_content .play_list .play_item:nth-child(6n){
    border-right: 0;
}
.play .play_content .play_list.two .play_item{
    border-bottom: 0;
}
.play .play_content .play_list .play_item:last-child{
    margin-bottom: 0;
}

.play .play_content .play_list .play_item .icon{
    height: 73px;
}

.play .play_content .play_list .play_item .text{
    width: 100%;
}

.play .play_content .play_list .play_item .text .title{
    display: block;
    font-size: 18px;
    color: #333;
    font-weight: bold;
}

.play .play_content .play_list .play_item .text .name{
    display: block;
    font-size: 16px;
    color: #666;
    margin-top: 3px;
}

/*知乎营销能实现什么效果*/
.effect_list{
    width: 100%;
    display: flex;
    margin-top: 35px;
}

.effect_list .effect_item{
    flex: 1;
    margin-right: 30px;
    box-shadow: 0 0 10px rgba(200,200,200,.3);
    border:1px solid #eeeeee;
    border-radius: 5px;
    padding: 25px 25px 40px;
    transition: all .5s ease;
}

.effect_list .effect_item:last-child{
    margin-right: 0;
}

.effect_list .effect_item .icon{
    display: block;
    width: 90px;
    margin: 0 auto;
    transition: all .5s ease;
}

.effect_list .effect_item .title{
    text-align: center;
    font-weight: bold;
    font-size: 20px;
    color: #333;
    margin-top: 25px;
}

.effect_list .effect_item .text{
    font-size: 16px;
    color: #666;
    margin-top: 20px;
}

.effect_list .effect_item:hover{
    border:1px solid #ce0505;
    margin-top: -15px;
}

/*知乎投放案例*/
.case_wrap{
    width: 100%;
    margin-top: 60px;
    padding: 60px 0;
    background: #f3f8ff;
}

.case_wrap .case_tab{
    width: 100%;
    display: flex;
    margin-top: 25px;
    justify-content: center;
    align-content: center;
}

.case_wrap .case_tab li{
    width: 120px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    font-size: 14px;
    color: #333;
    background: #fff;
    cursor:pointer;
    margin-right: 30px;
    border-radius: 5px;
}

.case_wrap .case_tab li.on{
    background: #0066ff;
    color: #fff;
}

.case_wrap .case_list{
    width: 100%;
    display: block;
    margin-top: 20px;
    background: #fff;
    padding: 40px;
}

.case_wrap .case_list .case_item{
    display: none;
    width: 100%;
}

.case_wrap .case_list .case_item.on{
    display: block;
}

.case_wrap .case_list .case_item .title{
    font-size: 24px;
    color: #333;
    text-align: center;
}

.case_wrap .case_list .case_item .case_img{
    margin-top: 20px;
    display: block;
    width: 100%;
}

/*知乎营销服务流程*/
.marketing{
    padding: 60px 0;
}

.marketing .marketing_list{
    width: 100%;
    display: flex;
    position: relative;
}
.marketing .marketing_list:after {
    content: "";
    width: 100%;
    border-bottom: 1px dashed #ccc;
    position: absolute;
    top: 60%;
    left: 0;
    z-index: 0;
    margin-top: -20px;
}
.marketing .marketing_list .marketing_item{
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 25px;

}

.marketing .marketing_list .marketing_item .icon-item{
    display: inline-block;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    border: 1px solid #ccc;
    text-align: center;
    line-height: 100px;
    z-index: 2;
    background: #fff;
}
.marketing .marketing_list .marketing_item .icon{
    display: inline-block;
    width: 50px;
}

.marketing .marketing_list .marketing_item .number{
    font-size: 22px;
    color: #0066fe;
    margin-top: 25px;
    font-style: italic;
}

.marketing .marketing_list .marketing_item .text{
    font-size: 18px;
    color: #333;
    margin-top: 10px;
}


@media screen and (max-width: 640px) {
    .w_1200{
        width: 100%;
    }
    .public_title{
        font-size: 20px;
    }
    .promote{
        padding: 30px 0;
    }
    .promote_list{
        width: 95%;
        margin: 0 auto;
    }
    .promote_list .promote_item{
        width: calc(50% - 5px);
        margin-right: 10px;
        padding: 15px;
        margin-top: 10px;
    }
    .promote_list .promote_item:nth-child(3n){
        margin-right: 10px;
    }
    .promote_list .promote_item:nth-child(2n){
        margin-right: 0;
    }
    .promote_list .promote_item .title img{
        width: 30px;
    }
    .promote_list .promote_item .title span{
        font-size: 16px;
    }
    .promote_list .promote_item .text{
        font-size: 12px;
        line-height: 18px;
        margin-top: 5px;
    }
    .customized{
        padding: 30px 0;
    }
    .customized .customized_list{
        width: 95%;
        margin: 15px auto 0;
        flex-wrap: wrap;
    }
    .customized .customized_list .customized_item{
        margin-right: 10px;
        flex: none;
        width: calc(50% - 5px);
        margin-bottom: 10px;
    }
    .customized .customized_list .customized_item:nth-child(2n){
        margin-right: 0;
    }
    .customized .customized_list .customized_item .text{
        display: none;
    }
    .customized .customized_list .customized_item .title{
        font-size: 14px;
        margin-top: 10px;
    }
    .play{
        padding: 30px 0;
    }
    .play .play_content{
        width: 95%;
        margin: 15px auto 0;
        flex-wrap: wrap;
    }
    .play .play_content .play_img{
        width: 100%;
    }
    .play .play_content .play_img img{
        height: 190px;
    }
    .play .play_content .play_list .play_item{
        margin-bottom: 15px;
    }
    .play .play_content .play_list .play_item .icon{
        width: 40px;
    }
    .play .play_content .play_list .play_item .text .title{
        font-size: 14px;
    }
    .play .play_content .play_list .play_item .text .name{
        font-size: 12px;
    }
    .effect_list{
        width: 95%;
        margin: 30px auto 0;
    }
    .effect_list .effect_item{
        margin-right: 10px;
        padding: 15px;
    }
    .effect_list .effect_item .icon{
        width: 50px;
    }
    .effect_list .effect_item .text{
        display: none;
    }
    .effect_list .effect_item .title{
        margin-top: 12px;
    }
    .case_wrap .case_tab{
        width: 95%;
        margin: 15px auto 0;
    }
    .case_wrap .case_tab li{
        flex: 1;
        margin-right: 12px;
    }
    .case_wrap .case_tab li:last-child{
        margin-right: 0;
    }
    .case_wrap .case_list{
        width: 95%;
        margin: 15px auto 0;
        padding: 15px;
    }
    .case_wrap{
        padding: 30px 0;
        margin-top: 30px;
    }
    .case_wrap .case_list .case_item .title{
        font-size: 16px;
    }
    .case_wrap .case_list .case_item .case_img{
        margin-top: 15px;
    }
    .marketing{
        padding: 30px 0;
    }
    .marketing .marketing_list .marketing_item .icon{
        width: 50%;
    }
    .marketing .marketing_list .marketing_item .number{
        font-size: 16px;
        margin-top: 4px;
    }
    .marketing .marketing_list .marketing_item .text{
        font-size: 12px;
        margin-top: 0;
    }
}