.g-container{width:1180px}.u-bbcsprite,.bbccover .maskpi{background:url(https://s2.open.163.com/ocb/res/img/bbc/bbc_sprite.png) 9999px 9999px no-repeat}.m-botnav{box-shadow:none;height:50px;background:none}.m-botnav .main{background:none}.m-botnav .mainnav{height:50px}.m-botnav .mainnav .link{height:50px;line-height:50px;border:none;padding:0 17px}.m-botnav .mainnav .link:hover{background:none;color:#4ba4fc}.m-botnav .mainnav .link.current{background:none;color:#4ba4fc}.m-botnav .active .link:hover,.m-botnav .active .link.current{color:#666;background:#fff !important}.m-cate{background:#f0f0f0;padding:40px 0 50px 0}.m-cate2{background:#fafafa}.m-bbcslide{width:100%;overflow:hidden;z-index:500;background:#000;top:-50px;box-shadow:0 1px 1px rgba(0,0,0,0.3);height:420px;margin-bottom:-50px}.m-bbcslide .piccontainer{top:0;left:50%;margin-left:-590px;width:1180px;height:100%}.m-bbcslide .piccontainer .pics{z-index:10;width:100%;height:100%}.m-bbcslide .piccontainer .pics .pic{display:none;z-index:1;width:100%;height:100%}.m-bbcslide .piccontainer .pics .pic .topbg{top:0;left:0;background:url("https://s2.open.163.com/ocb/res/img/bbc/navbg.png") repeat-x;width:100%;height:220px}.m-bbcslide .piccontainer .pics .pic .txtw{width:1180px;bottom:0;left:50%;margin-left:-590px}.m-bbcslide .piccontainer .pics .pic img.txtimg{bottom:50px;left:20px}.m-bbcslide .piccontainer .pics .pic img.bgimg{width:100%;height:100%}.m-bbcslide .piccontainer .btns{z-index:100;width:1180px;top:0;left:50%;margin-left:-590px}.m-bbcslide .piccontainer .btns .prevbtn{top:250px;left:-45px;width:45px;height:100px;background-position:-149px -22px}.m-bbcslide .piccontainer .btns .prevbtn:hover{background-position:-52px -22px}.m-bbcslide .piccontainer .btns .prevbtn.disable{display:none}.m-bbcslide .piccontainer .btns .prevbtn.inner{left:0}.m-bbcslide .piccontainer .btns .nextbtn{top:250px;right:-45px;width:45px;height:100px;background-position:-103px -22px}.m-bbcslide .piccontainer .btns .nextbtn:hover{background-position:0 -22px}.m-bbcslide .piccontainer .btns .nextbtn.disable{display:none}.m-bbcslide .piccontainer .btns .nextbtn.inner{right:0}.m-bbcslide .piccontainer .btns .qhbtns{bottom:20px;left:50%;margin-left:-66px;width:132px;height:12px}.m-bbcslide .piccontainer .btns .qhbtns .btn{width:12px;height:12px;background-position:-219px -88px;margin:0 5px}.m-bbcslide .piccontainer .btns .qhbtns .btn:hover,.m-bbcslide .piccontainer .btns .qhbtns .btn.current{background-position:-240px -88px}.m-bbcslide .piccontainer .bbtns{bottom:0;top:auto}.bbcrow{margin:0 -10px}.bbccell1,.bbccell2{float:left;margin:0 10px}.bbccell1{width:220px}.bbccell2{width:460px}.bbccard1{height:164px}.bbccard2{height:308px}.bbccover .mask{top:0;left:0;bottom:0;right:0;opacity:0;filter:alpha(opacity=0);transition:opacity 0.2s ease-in 0s}.bbccover .maskpi{opacity:0;filter:alpha(opacity=0);width:80px;height:80px;top:50%;left:50%;margin-top:-40px;margin-left:-40px;background-position:-293px -37px;transition:opacity 0.2s ease-in 0s}.bbccover .data{display:none}.bbccover .shadow{transition:box-shadow 0.2s ease-in 0s}.bbccover:hover .mask{background:#4ba4fc;opacity:0.5;filter:alpha(opacity=50)}.bbccover:hover .maskpi{opacity:1;filter:alpha(opacity=100)}.bbccover:hover .shadow{box-shadow:0 0 8px #666}.m-bbclist{padding:60px 0}.m-bbclist .listw{margin-bottom:60px}.m-bbclist .listw.last{margin-bottom:0}.m-bbclist .listw .u-switch{height:312px}.m-bbclist .listw .prevbtn,.m-bbclist .listw .nextbtn,.m-bbclist .listw .prevbtn2,.m-bbclist .listw .nextbtn2{z-index:1;top:105px;width:50px;height:100px;position:absolute}.m-bbclist .listw .prevbtn{left:-50px;background-position:-200px -134px}.m-bbclist .listw .prevbtn:hover{background-position:-250px -134px}.m-bbclist .listw .prevbtn.disable{display:none}.m-bbclist .listw .nextbtn{right:-50px;background-position:-300px -134px}.m-bbclist .listw .nextbtn:hover{background-position:-350px -134px}.m-bbclist .listw .nextbtn.disable{display:none}.m-bbclist .listw .prevbtn2{left:0;background-position:-50px -134px}.m-bbclist .listw .prevbtn2:hover{background-position:0 -134px}.m-bbclist .listw .prevbtn2.disable{display:none}.m-bbclist .listw .nextbtn2{right:0;background-position:-100px -134px}.m-bbclist .listw .nextbtn2:hover{background-position:-150px -134px}.m-bbclist .listw .nextbtn2.disable{display:none}.m-bbclist .ccard{background:#4ba4fc;width:220px;height:245px;padding-top:63px;text-align:center}.m-bbclist .ccard .ic{width:85px;height:84px;margin:0 auto 20px auto}.m-bbclist .ccard .ic1{background-position:-2px -244px}.m-bbclist .ccard .ic2{background-position:-110px -244px}.m-bbclist .ccard .ic3{background-position:-212px -244px}.m-bbclist .ccard .ic4{background-position:-303px -244px}.m-bbclist .ccard h2{margin:0;line-height:38px;color:#fff;font-size:24px}.m-bbclist .ccard span{color:#abd0fd;font-size:14px;line-height:24px}.m-bbccorp img{margin-right:20px}.u-coursecard{display:none;z-index:600;top:538px;left:0px;box-shadow:0 0 15px #666;width:220px;height:308px}.u-coursecard .con{z-index:2;padding:15px;height:278px;background:#fff}.u-coursecard .con h4{line-height:28px;margin:0 0 3px 0;font-size:18px}.u-coursecard .con p{line-height:20px}.u-coursecard .con .des{height:80px;overflow:hidden}.u-coursecard .con .starsw{height:20px;line-height:20px;padding:12px 0}.u-coursecard .con .starsw .stars{height:20px}.u-coursecard .con .starsw .star{width:18px;height:18px;background-position:-236px -106px;margin-right:2px}.u-coursecard .con .starsw .staron{background-position:-216px -106px}.u-coursecard .con .btns{padding:10px 0 5px 0}.u-coursecard .con .btns a{text-align:center;min-width:54px;color:#fff;font-size:14px;padding:0 13px;*padding:0 10px;line-height:34px;border-radius:17px}.u-coursecard .con .btns .lookbtn{background:#4ba4fc;margin-right:18px}.u-coursecard .con .btns .lookbtn:hover{background:#318eea}.u-coursecard .con .btns .storebtn{background:#f09112}.u-coursecard .con .btns .storebtn:hover{background:#dd830a}.u-coursecard .con .btns .disable{background:#aaa;cursor:default}.u-coursecard .arrow{z-index:1;top:119px;width:70px;height:70px;background-position:-210px -2px}.u-coursecard .arrow.arrowleft{left:-19px}.u-coursecard .arrow.arrowright{right:-21px}.u-coursecard .arrow.ie9below{background-position:-383px -2px}