body{background:#f9f9f9;}
.g-cnt:after{content:'.';display:block;clear:both;height:0;visibility:hidden;overflow:hidden;}
.g-cnt{position:relative;width:1200px;height:auto;margin:0 auto;zoom:1;-webkit-font-smoothing:antialiased;}
/* Banner */
.m-ban{position:relative;height:380px;background:#19181b;}
.m-ban .ban-main{position:relative;height:100%;}
.m-ban .ban-cnt{position:absolute;height:380px;top:0;left:50%;margin-left:-600px;z-index:2;}
.m-ban .prev,.m-ban .next{position:absolute;top:50%;display:block;width:27px;height:48px;margin-top:-24px;background:url(../images/ban_icon_arrow.png) no-repeat;}
.m-ban .prev{left:230px;background-position:0 0;}
.m-ban .next{right:20px;background-position:-27px 0;}
.m-ban .ban-bd{height:380px !important;margin:0 auto;overflow:hidden;}
.m-ban .ban-bd li{position:relative;width:100%;}
.m-ban .ban-bd li a{display:block;}
.m-ban .ban-bd li img{position:absolute;top:0;left:50%;width:1920px;transform:translate(-50%, 0);}
.m-ban .ban-hd{position:absolute;bottom:24px;left:0;width:100%;text-align:center;font-size:0;}
.m-ban .ban-hd li{display:inline-block;width:16px;height:16px;margin:0 8px;background:#e6e6e6;border-radius:100%;cursor:pointer;}
.m-ban .ban-hd li.on{background:#fec304;}
.m-ban .ban-nav{position:absolute;top:0;left:0;width:210px;height:100%;background:#fff;z-index:9;}
.m-ban .ban-nav .nav-item{box-sizing:border-box;height:65px;padding:8px 16px;border-top:1px solid #e6e6e6;}
.m-ban .ban-nav .nav-item::after{}
.m-ban .ban-nav .nav-hd{height:54px;line-height:37px;font-size:16px;color:#000;}
.m-ban .ban-nav .nav-hd .ivu-icon{margin:-2px 8px 0 0;vertical-align:middle;}
.m-ban .ban-nav .nav-bd{border-bottom:1px solid #e6e6e6;}
.m-ban .ban-nav .nav-item.on{background:#f9f9f9;}
.m-ban .ban-nav .nav-item .item-tit{position:relative;text-decoration:underline;font-size:14px;color:#000;}
.m-ban .ban-nav .nav-item .item-arrow{position:absolute;top:16px;right:0;width:16px;height:16px;background:url(../images/icon_arrow.png) center/100% 100% no-repeat;font-size:24px;color:#696969;}
.m-ban .ban-nav .nav-item .item-links{margin-top:8px;font-size:0;}
.m-ban .ban-nav .nav-item .item-links a{display:inline-block;margin-right:8px;font-size:12px;color:#999;}
.m-ban .ban-nav .nav-item .item-links a:hover{color:#fec304;}
.m-ban .ban-nav .nav-item .item-child{display:none;}
.m-ban .ban-nav .nav-item .item-child{box-sizing:border-box;position:absolute;top:0;left:210px;width:500px;height:100%;padding:48px;background:#fff;box-shadow:0 1px 8px rgba(39,39,39,0.25);overflow:hidden;overflow-y:auto;}
.m-ban .ban-nav .nav-item .item-child .item-tit{text-decoration:none;}
.m-ban .ban-nav .nav-item .item-box{margin-bottom:24px;}
.m-ban .ban-nav .nav-item .item-box:last-child{margin-bottom:0;}
.m-ban .ban-nav .nav-item.on .item-child{display:block;}
/* ç›é€‰æ */
.m-filter{width:100%;padding:10px 0;background:#fff;box-shadow:0 1px 8px rgba(0,0,0,0.1);}
.m-filter .filter-item{margin:10px 0;font-size:16px;}
.m-filter .filter-item .item-label{margin-right:16px;color:#c3c3c3;}
.m-filter .filter-item .item-bd{font-size:0;}
.m-filter .filter-item .item-bd li{display:inline-block;height:24px;padding:0 16px;line-height:24px;font-size:16px;color:#333;cursor:pointer;}
.m-filter .filter-item .item-bd li a{display:block;color:#333;}
.m-filter .filter-item .item-bd li a:hover{color:#fec304;}
.m-filter .filter-item .item-bd li.on{background:#fec304;}
.m-filter .filter-item .item-bd li.on a{color:#333;}
/* 课程 */
.m-kech{margin-top:30px;}
.m-kech .kech-tab{}
.m-kech .kech-tab .tab-hd{}
.m-kech .kech-tab .tab-hd li{display:inline-block;height:35px;padding:0 12px;text-align:center;line-height:35px;font-size:16px;color:#333;cursor:pointer;}
.m-kech .kech-tab .tab-hd li:hover{color:#fec304;}
.m-kech .kech-tab .tab-hd li.on{background:#fec304;color:#333;}
.m-kech .kech-tab .tab-bd{padding-top:30px;border-top:2px solid #fec304;}
.m-kech .kech-tab .tab-box{position:relative;max-height:1263px;padding-bottom:100px;overflow:hidden;}
.m-kech .kech-item{float:left;width:284px;height:370px;margin:0 21px 21px 0;background:#fff;border-radius:4px;box-shadow:0 1px 8px rgba(0,0,0,0.1);overflow:hidden;}
.m-kech .kech-item:nth-child(4n){margin-right:0;}
.m-kech .kech-item .item-hd{position:relative;width:284px;height:156px;}
.m-kech .kech-item .item-tag{box-sizing:border-box;position:absolute;top:20px;right:0;display:block;width:63px;height:17px;padding-left:8px;text-align:center;background:url(../images/kech_tag_bg.png) no-repeat;font-size:12px;color:#fff;}
.m-kech .kech-item .item-bd{position:relative;height:214px;}
.m-kech .kech-item .item-info{display:flex;padding:24px 24px 0;}
.m-kech .kech-item .item-info dt{flex:0 0 auto;width:50px;margin-right:16px;text-align:center;}
.m-kech .kech-item .item-info dd{flex:1 1 auto;}
.m-kech .kech-item .item-info .info-avatar{width:48px;height:48px;border:1px solid #999;border-radius:100%;overflow:hidden;}
.m-kech .kech-item .item-info .info-avatar img{width:100%;height:100%;}
.m-kech .kech-item .item-info .info-name{margin-top:8px;font-size:14px;color:#000;}
.m-kech .kech-item .item-info .info-tit{margin-bottom:8px;font-size:16px;color:#000;}
.m-kech .kech-item .item-info .info-txt{font-size:14px;color:#999;}
.m-kech .kech-item .item-operate{position:absolute;bottom:20px;left:0;width:100%;text-align:center;font-size:0;}
.m-kech .kech-item .item-btn{display:inline-block;width:118px;height:32px;text-align:center;line-height:30px;border:1px solid #e0e0e0;border-radius:4px;font-size:14px;color:#666;}
.m-kech .kech-item .item-btn:nth-child(2){margin-left:8px;}
.m-kech .kech-item .item-btn:hover{border-color:#fec304;color:#fec304;}
.m-kech .kech-item-biology .item-hd{background:url(../images/kech_img_biology.png) no-repeat;} /* 生物 */
.m-kech .kech-item-math .item-hd{background:url(../images/kech_img_math.png) no-repeat;} /* æ•°å¦ */
.m-kech .kech-item-chemistry .item-hd{background:url(../images/kech_img_chemistry.png) no-repeat;} /* åŒ–å¦ */
.m-kech .kech-item-english .item-hd{background:url(../images/kech_img_english.png) no-repeat;} /* è‹±è¯ */
.m-kech .kech-item-history .item-hd{background:url(../images/kech_img_history.png) no-repeat;} /* åŽ†å² */
.m-kech .kech-item-political .item-hd{background:url(../images/kech_img_political.png) no-repeat;} /* 政治 */
.m-kech .kech-item-physics .item-hd{background:url(../images/kech_img_physics.png) no-repeat;} /* ç‰©ç† */
.m-kech .kech-item-chinese .item-hd{background:url(../images/kech_img_chinese.png) no-repeat;} /* è¯æ–‡ */
.m-kech .kech-box{}
.m-kech .kech-more{position:absolute;bottom:0;left:0;width:100%;height:100px;text-align:center;background:#f7f7f7;}
.m-kech .kech-more .more-btn{display:block;width:500px;height:42px;margin:16px auto 0;text-align:center;line-height:42px;border:1px solid #fec304;border-radius:4px;font-size:16px;color:#fec304;cursor:pointer;}
.m-kech .kech-more .more-btn:hover{background:rgba(254, 194, 4, .1);}
.m-switch{}
.m-switch .switch-hd{}
.m-switch .switch-bd{}
.m-switch .switch-box{}
/* 翻页器 */
.m-page{margin:10px 0 0;text-align:center;line-height:32px;font-size:0;letter-spacing:-0.307em;*letter-spacing:normal;*word-spacing:-1px;word-wrap:normal;white-space:nowrap;color:#fff;}
.m-page a,.m-page i{display:inline-block;*display:inline;*zoom:1;vertical-align:top;padding:0 12px;margin:0 3px;font-size:14px;letter-spacing:normal;word-spacing:normal;background:#e0e0e0;-webkit-transition:background-color 0.3s;-moz-transition:background-color 0.3s;-ms-transition:background-color 0.3s;transition:background-color 0.3s;}
.m-page a,.m-page a:hover{text-decoration:none;color:#fff;}
.m-page a.first{margin-left:0;border-top-left-radius:5px;border-bottom-left-radius:5px;}
.m-page a.last{margin-right:0;border-top-right-radius:5px;border-bottom-right-radius:5px;}
.m-page a .pagearr{font-weight:bold;font-family:\5b8b\4f53;vertical-align:top;*vertical-align:middle;}
.m-page a.pageprv .pagearr{margin-right:3px;}
.m-page a.pagenxt .pagearr{margin-left:3px;}
.m-page a:hover{background:#e0e0e0;}
.m-page a:active{background:#fec304;}
.m-page a.z-crt,.m-page a.z-crt:hover,.m-page a.z-crt:active{cursor:default;color:#fff;background:#fec304;}
.m-page a.z-dis,.m-page a.z-dis:hover,.m-page a.z-dis:active{cursor:default;color:#ccc;background:#fff;}
/* 弹窗 */
.m-dialog{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.75);z-index:9;}
.m-dialog .dialog-main{position:fixed;top:50%;left:50%;background:#fff;}
.m-dialog .dialog-close{position:absolute;top:-45px;right:24px;display:block;width:28px;height:47px;background:url(../images/login_icon_close.png) no-repeat;cursor:pointer;}
/* 登录弹窗 */
.m-dialog-login .dialog-main{width:600px;height:368px;margin:-184px 0 0 -300px;}
.m-dialog-login .login-bd{padding:32px;text-align:center;}
.m-dialog-login .login-tit{position:relative;display:inline-block;font-size:14px;font-weight:bold;color:#000;}
.m-dialog-login .login-tit::after{content:'';position:absolute;bottom:-2px;left:0;width:100%;height:4px;background:#fec304;}
.m-dialog-login .login-form{margin-top:16px;overflow:hidden;}
.m-dialog-login .login-item{width:220px;height:32px;padding:2px 8px;margin-top:24px;line-height:26px;text-align:left;border:1px solid #e0e0e0;border-radius:4px;}
.m-dialog-login .login-item:nth-child(2){padding-right:0;}
.m-dialog-login .login-item .item-phone{width:100%;}
.m-dialog-login .login-item .item-code{width:112px;}
.m-dialog-login .login-item .item-btn{display:inline-block;width:88px;text-align:center;border-left:1px solid #e0e0e0;font-size:12px;cursor:pointer;}
.m-dialog-login .login-protocol{margin:40px 0 56px;}
.m-dialog-login .login-protocol label{cursor:pointer;}
.m-dialog-login .login-btn{display:inline-block;width:88px;height:26px;margin-top:40px;text-align:center;line-height:24px;border:1px solid #e0e0e0;border-radius:4px;font-size:14px;color:#666;cursor:pointer;}
.m-dialog-login .login-btn:hover{border-color:#fec304;color:#fec304;}
/* 视频弹窗 */
.m-dialog-video{}
.m-dialog-video .dialog-main{width:678px;margin:-190px 0 0 -339px;}