*{margin: 0; padding: 0;}
a:hover{text-decoration: none;}
.intro_wrap {width: 100%;padding: 20px 0;box-sizing: border-box;background: url(../images/course/newintrocover.png) no-repeat;background-size: cover;}
.intro_main {
    margin: auto;
    margin: auto;
    background: white;
    border-radius: 10px;
    /* height: 415px; */
    padding: 40px 40px 70px 40px;
    box-sizing: border-box;
}
.intro_left {
    float: left;
    width: 40%;
    height: 300px;
    background: darkgray;
    margin-right: 20px;
    position: relative;
    border-radius: 5px;
}
.intro_left>img {
    width: 100%;
    height: 100%;
    border-radius: 5px;
    margin-bottom: 20px;
}
.mask {
    width: 100%;
    height: 300px;
    opacity: 0.4;
    position: absolute;
    top: 0;
    left: 0;
    background: #000000;
    border-radius: 5px;
}
.intro_left p {
    margin-left: 5px;
    position: relative;
}
.intro_left p span {
    color: #999999;
    font-size: 12px;
    vertical-align: middle;
    margin-right: 25px;
    display: inline-block;
    cursor: pointer;
}
.intro_left p span i {
    float: left;
}
i.sharesc {
    width: 15px;
    height: 18px;
    /*margin-top: -3px;*/
    float: left;
    display: inline-block;
    /* vertical-align: middle; */
    margin-right: 5px;
    /* margin-top: -24px; */
    background-image: url(../images/subject/btn-collect.png);
    background-repeat: no-repeat;
    background-position: center;
    background-size: 100%;
}
.intro_left p span i {
    float: left;
}
.intro_left>a {
    width: 120px;
    border: 1px solid white;
    height: 40px;
    text-align: center;
    display: inline-block;
    line-height: 40px;
    font-size: 18px;
    color: white;
    border-radius: 20px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.4);
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr=#66000000, endColorstr=#66000000);
    cursor: pointer;
}
.intro_right {
    float: left;
    width: 55%;
}
.intro_right .intro_top {
    position: relative;
}
.intro_right .intro_top span {
    font-size: 18px;
    color: #333333;
    display: inline-block;
    /* margin-top: 17px; */
    margin-bottom: 10px;
}
.intro_right .intro_top p {
    font-size: 12px;
    color: #E95513;
    margin-bottom: 20px;
}
.intro_bot {
    background: #f7f7f7;
    padding: 15px;
    box-sizing: border-box;
    margin-bottom: 30px;
    border-radius: 5px;
}
.intro_right .intro_bot .intro_price span {
    font-size: 12px;
    color: #999999;
}
.intro_right .intro_bot .intro_price span a {
    font-size: 18px;
    color: #E95513;
}
.intro_right .intro_bot .intro_price span i {
    font-size: 30px;
    color: #E95513;
    font-style: normal;
    margin-right: 20px;
    display: inline-block;
}
.intro_right .intro_bot .intro_price span .text {
    font-size: 12px;
    color: #999999;
    font-style: normal;
    text-decoration: line-through;
    display: inline-block;
}
.intro_right .intro_bot .free_price {
    margin-top: 15px;
}
.free_price .act {
    float: left;
}
.free_price .act span {
    font-size: 12px;
    color: #999999;
    margin-right: 20px;
    display: inline-block;
    line-height: 20px;
}
.free_price .actprice {
    float: left;
}
.free_price .actprice p {
    font-size: 12px;
    color: #999999;
}
.free_price .actprice span {
    font-size: 12px;
    color: #999999;
    display: inline-block;
    margin-bottom: 10px;
}
.buybtn a:first-child {
    width: 150px;
    height: 40px;
    /* background: url(https://image.vko.cn/v8/3.0/home/images/buyicon.jpg) no-repeat; */
    background: #E95513;
    border-radius: 5px;
    display: inline-block;
    text-align: center;
    line-height: 40px;
    font-size: 16px;
    color: white;
    margin-left: 60px;
    cursor: pointer;
    margin-right: 40px;
}
.buybtn a:first-child+a {
    min-width: 130px;
    padding: 0 10px;
    height: 40px;
    background: #ffaa84;
    display: inline-block;
    font-size: 16px;
    color: white;
    border-radius: 5px;
    text-align: center;
    line-height: 40px;
    cursor: pointer;
    margin-right: 40px;
}
.course_tab {
    border: 1px solid #f6f6f6;
    background: #fafafa;
    height: 51px;
}
.course_tab ul {
    color: #464646;
}
.course_tab ul .current {
    /* background: #208cf4; */
    color: #333333!important;
    font-size: 18px;
    height: 50px;
    font-weight: bold;
    border-top: 3px solid #fc8b5b;
    border-bottom: 1px solid #ffffff;
    /* border-bottom: none; */
    background: white;
    border-right: 1px solid #f6f6f6;
}
.course_tab li {
    width: 170px;
    text-align: center;
    line-height: 50px;
    float: left;
    font-size: 18px;
    cursor: pointer;
    color: #333333;
}
.shipin-tuwenjieshao {
    border-radius: 2px;
    width: 100%;
    background: #fff;
    min-height: 200px;
    padding: 8px 20px 20px 20px;
    box-shadow: 0 1px 3px rgba(26,26,26,.1);
    margin-bottom: 12px;
}
.shipin-tuwenjieshao p {
    text-align: justify;
    color: #555555;
    font-size: 14px;
    line-height: 25px;
    margin-top: 8px;
}
.recommend_tab {
    width: 100%;
    height: 50px;
    background: #fafafa;
    border: 1px solid #f6f6f6;
    line-height: 50px;
    padding-left: 15px;
    box-sizing: border-box;
}
.recommend_tab span {
    font-size: 16px;
    color: #333333;
}
.subject1 {
    margin-bottom: 23px;
}
.subject1 .sub_img,.subject1 .sub_img img {
    width: 100%;
}
.subject1 .sub_price {
    padding: 0 10px;
    box-sizing: border-box;
    border: 1px solid #f6f6f6;
    border-top: none;
    padding-bottom: 15px;
    padding-top: 15px;
}
.subject1 .sub_price span {
    display: block;
    margin-bottom: 15px;
}
.subject1 .sub_price .font1 {
    font-size: 16px;
    color: #333333;
    display: block;
}
.subject1 .sub_price .font2 {
    font-size: 14px;
    color: #999999;
    display: block;
    max-height: 40px;
    overflow: hidden;
    text-overflow: ellipsis;
}
.subject1 .sub_price .font2 span {
    float: right;
    font-size: 16px;
    color: #E95513;
}
.subject1 .sub_price .font2 span a {
    font-size: 12px;
    color: #E95513;
}
.js_intro {
    /*border-top: 1px solid #DEDEDE;*/
    padding-top: 20px;
    margin-bottom: 20px;
    padding-left: 10px;
}

.js_intro_left {
    float: left;
}

.js_intro_left span {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: #dedede;
    display: inline-block;
    margin-right: 10px;
}

.js_intro_right {
    float: left;
}

.js_intro_right span {
    font-size: 16px;
    color: #666;
    display: inline-block;
    margin-top: 22px;
}

.recommend_tab span {
    font-size: 16px;
    color: #333333;
}

.js_content p {
    font-size: 14px;
    color: #777777;
    margin-top: 10px;
    line-height: 20px;
    width: 780px;
}

.js_intro_left span img{
    width: 60px;
    height: 60px;
    border-radius: 50%;
}

.pl_content{margin-top: 20px}
.send{background: #fff; padding: 10px;}
.send .title{color: #1b7fb6;}
/*.input{border: 1px solid #ccc;  padding: 5px; margin-top: 3px;}*/
.input textarea{width:100%;height: 45px; outline: none;padding-left: 3px; border: 1px solid #eee; box-shadow: 0px 0px 3px 0px rgba(0,0,0,0.15) inset;}
.func_area{margin-top: 10px;}
.func_area a{ color: #333;text-decoration: none; position: relative; font-size: 14px; line-height: 30px; }
.func_area a>input{position: absolute; top: 0px;left: 0px;opacity:0;width: 46px; outline: none}
.func_area a:hover{color:#1b7fb6 }
.ficon_image{color: #84c002; margin-right: 3px;}
.submit{color: #fff; background: rgba(27,122,182,0.6); padding: 5px 15px; float: right; border-radius: 3px; border: 0; }
.submit:hover{background: #1b7fb6}
.z_photo {
    padding: 18px;
    border: 2px dashed #E7E6E6;
    height: 133px;
}
.clear {
    clear: both;
}
.upimg-div .z_file {
    width: 91px;
    /*height: 100%;*/
    position: relative;
}
.fl {
    float: left;
}
.z_file .add-img {
    display: block;
    width: 100%;
    height: 100%;
}
.z_file .file {
    width: 100%;
    height: 100%;
    opacity: 0;
    position: absolute;
    top: 0px;
    left: 0px;
    z-index: 100;
}

.upimg-div .up-section {
    width: 91px;
    height: 91px;
}
.img-box .upimg-div .z_file {
    width: 91px;
    height: 91px;
}
.z_file .add-img {
    display: block;
    width: 91px;
    height: 91px;
}
.z_photo .up-section{
    position: relative;
    margin-right: 20px;
    margin-bottom: 20px;
}
.up-section .close-upimg{
    position: absolute;
    top: 6px;
    right: 8px;
    display: none;
    z-index: 10;
}
.up-section .up-span{
    display: block;
    width: 100%;
    height: 100%;
    visibility: hidden;
    position: absolute;
    top: 0px;
    left: 0px;
    z-index: 9;
    background: rgba(0,0,0,.5);
}
.up-section:hover{
    border: 2px solid #f15134;
}.up-section:hover .up-span{
     visibility: visible;
 }
.z_photo .up-img{
    display: block;
    width: 100%;
    height: 100%;
}
.loading{
    border: 1px solid #D1D1D1;
    background:url(../img/loading.gif) no-repeat center;
}
.up-opcity{opacity: 0;
}
.img-name-p{
    display: none;
}
.section_wrap ul{padding-top: 15px;}
.section_wrap ul li{
    width: 30%;
    margin-right:1% ;
    margin-left: 2%;
    overflow: hidden;
    float: left;
    margin-bottom: 30px;
    padding-bottom: 10px;
    margin-top: 13px;
    box-shadow: 2px 5px 12px 0 rgba(95,101,105,.1);
    border-radius: 10px;
}
.section_wrap ul li:hover{
    transform: translateY(-2px);
    box-shadow: 0 12px 20px 0 rgba(95,101,105,.1);
 }

.section_wrap ul li a{
    color: #333;
}
.section_wrap ul li a:hover{
    color: #165ba8;
}
.section_wrap ul li a .img{
     width: 100%;
 }
.section_wrap ul li a .img img{
    width: 100%;
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
}
.section_wrap ul li a .title{
    line-height: 22px;
    font-size: 16px;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
    margin: 10px 0px;
    padding: 0px 5px;
    font-weight: bold;
}
.section_wrap ul li .play{padding: 0px 10px;}
.section_wrap ul li .play  div{line-height: 22px;}
.section_wrap ul li .play div:nth-child(1){ float: left}
.section_wrap ul li .play div:nth-child(2){ float: right}