@charset "utf-8";
* {
    margin: 0;
    padding: 0;
}

a {
    text-decoration: none;
}

img {
    border: none;
}

ol,
ul {
    list-style-type: none;
}

body {
    font-family: 'Microsoft YaHei';
    /* background-color: #fff; */
    background: url(../imgs/backgroundRed.jpg) no-repeat;
}

.clear {
    clear: both;
}

.contain {
    width: 1042px;
    height: 578px;
    margin: 0 auto;
    background: url(../imgs/bgq.png) no-repeat center top;
}

.content_box {
    width: 554px;
    margin: 125px auto;
}

.banner {
    padding-top: 0px;
    margin: 0 auto;
    width: 795px;
}
.banner img{
	margin-top: -66px;
	margin-left: -116px;
}

.left {
    float: left;
    width: 768px;
	height: 432px;
    margin: 28px 0 0 -107px;
    position: relative;
}

.right {
    float: left;
    width: 330px;
    margin: 10px auto 0;
}

.left .video {
	padding: 0 0 0 0;
	width: 768px;
	height: 432px;
}

.left .copyright {
	width: 980px;
    font-family: "楷体";
    font-size: 20px;
    color: #fff;
    text-align: center;
    line-height: 64px;
}

.left .copyright .have {
    font-size: 14px;
}

.left .copyright .copyright_txt {
    float: left;
    margin-left: 215px;
    margin-top: 9px;
    color: #000000;
}

#player {
    width: 640px;
    height: 360px;
}

.left .clarity {
    margin-top: 20px;
    margin-left: 26px;
    width: 60px;
    height: 78px;
    color: #fff;
    text-align: center;
    float: left;
    font-family: "Microsoft YaHei";
    font-size: 14px;
}

.left .clarity ul {
    width: 100%;
    margin-top: -78px;
    float: right;
    display: none;
}

.left .clarity .choose {
    line-height: 26px;
    cursor: pointer;
    width: 100%;
    background-color: #000;
    opacity: 0.9;
    background-color: rgba(0, 0, 0, 0.9);
    color: #fff;
    display: block;
}

.left .clarity li {
    line-height: 26px;
    cursor: pointer;
    background-color: #000;
    opacity: 0.7;
    background-color: rgba(0, 0, 0, 0.7);
}

.left .clarity .choose img {
    position: relative;
    bottom: 3px;
    margin-right: 4px;
}

.menu_title {
    margin: 12px auto 0;
    width: 313px;
    height: 42px;
    background: url(../imgs/menu_tab.png) no-repeat;
    font-family: "SimHei";
    font-size: 18px;
}

.menu_title .tab {
    display: none;
}

.menu_title li {
    float: left;
    width: 156px;
    cursor: pointer;
    text-align: center;
    height: 35px;
    line-height: 34px;
    letter-spacing: 4px;
}

.menu_title li.active {
    /* background: url(../imgs/menu_title_active2.png) no-repeat; */
	background-color: #2e4152;
    color: #fff;
}

.menu {
    width: 313px;
    height: 298px;
    margin: 0 auto;
    /* background: url(../imgs/menu_bg.png) no-repeat; */
	background-color: #2e4152;
    border-radius: 5px;
    padding-top: 20px;
}

.list .first_list {
    font-family: "SimSun";
    font-weight: bold;
    font-size: 16px;
}

.list .first_list .first_title {
    float: left;
    width: 244px;
}

.list {
    height: 286px;
    overflow-y: scroll;
}

.switch {
    display: none;
}

.list li {
    line-height: 34px;
    color: #FFFFFF;
}

.list li b {
    display: inline-block;
    float: left;
    width: 15px;
    height: 15px;
    background: url(../imgs/chapter.png) no-repeat;
    margin: 9px 10px 0 20px;
}

.list .second_list {
    font-family: "Microsoft YaHei";
    font-weight: normal;
    color: #48494a;
    font-size: 14px;
}

.list .second_list li {
    line-height: 30px;
    cursor: pointer;
    padding: 0 10px 0 44px;
}

.list .second_list li img,
.list li.teacher_p dt img {
    position: relative;
    bottom: 4px;
    margin: 0 7px;
}

.list .second_list li.current {
    background-color: #7ebcee;
    background-image: url(../imgs/circle.png);
    background-repeat: no-repeat;
    padding: 0 10px 0 44px;
    background-position: 25px 14px;
    color: #fff;
    font-size: 16px;
}


/**********简介************/

.list li.teacher_p b {
    display: inline-block;
    width: 15px;
    height: 15px;
    background: url(../imgs/teacher.png) no-repeat;
    margin: 9px 10px 0 20px;
}

.list li.teacher_p {
    font-family: "SimSun";
    font-weight: bold;
    font-size: 16px;
    color: #FFFFFF;
}

.list li.teacher_p dl {
    font-family: "Microsoft YaHei";
    font-weight: normal;
}


/* .list li.teacher_p dt{background-color:#7ebcee;color:#fff;font-size:16px;padding-left:18px;} */

.list li.teacher_p dd,
.list li.course_p p {
    font-size: 16px;
    padding-left: 0px;
    width: 245px;
    margin: 10px auto;
    line-height: 26px;
    text-indent: 2em;
}

.list li.course_p b {
    display: inline-block;
    width: 15px;
    height: 15px;
    background: url(../imgs/course.png) no-repeat;
    margin: 9px 10px 0 20px;
}