@import url(https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.css);a,abbr,acronym,address,applet,article,aside,audio,b,big,blockquote,body,canvas,caption,center,cite,code,dd,del,details,dfn,div,dl,dt,em,embed,fieldset,figcaption,figure,footer,form,h1,h2,h3,h4,h5,h6,header,hgroup,html,i,iframe,img,ins,kbd,label,legend,li,mark,menu,nav,object,ol,output,p,pre,q,ruby,s,samp,section,small,span,strike,strong,sub,summary,sup,table,tbody,tfoot,thead,time,tt,u,ul,var,video{margin:0;padding:0;border:0;font-size:100%;font:inherit;vertical-align:baseline;font-size:13px;font-family:Source Han Sans CN;text-decoration:none;font-family:宋体;white-space:normal;word-break:break-word}article,aside,details,figcaption,figure,footer,header,hgroup,menu,nav,section{display:block}body{line-height:1}ol,ul{list-style:none}blockquote,q{quotes:none}blockquote:after,blockquote:before,q:after,q:before{content:"";content:none}table{border-collapse:collapse;border-spacing:0}.flex{display:flex}.flex,.just-flex{align-items:center}.centerbox{width:1200px;margin:0 auto}.columnflex{flex-direction:column;align-items:center}.column-flex{display:flex;flex-direction:column}.centerflex{display:flex;justify-content:center;align-items:center}.exone{color:#909399;background-color:#fff;padding:0 17px 0;width:100%;box-sizing:border-box;line-height:40px}.exone font{color:#e6a23c}.exonetop{border-bottom:1px solid #f5f5f5}.excon{color:#333}.answerbox{padding-bottom:23px;border-bottom:1px solid #f5f5f5}.answerbox .antop{margin-top:20px}.answerbox .antop font{color:#67c23a}.zjs{font-size:12px;color:#909399;padding-bottom:13px}.exone .el-button span{margin:0}.el-collapse-item__header{height:auto;border:none!important}.el-collapse,.el-collapse-item__wrap{border:none!important}.just-flex{display:flex;justify-content:space-between}.col-flex{display:flex;flex-direction:column}.alflex,.align-flex{display:flex;align-items:center}.end-flex{display:flex;align-items:flex-end}.cen-flex{display:flex;justify-content:center;align-items:center}.flex-warp{flex-wrap:wrap}.around-flex{display:flex;justify-content:space-around}.justify{display:flex;justify-content:space-between}.right .el-radio-button__inner{border:none;margin-left:15px;padding:4px 6px;border-radius:3px!important;font-size:13px}.board{margin:19px 0 11px;color:#909399}.el-dialog--center{text-align:center;max-height:800px;overflow:auto}.el-dialog{margin:0 auto!important;margin-top:50px!important}.el-pagination__editor.el-input{width:50%!important}aside,i,li,p,span{cursor:pointer}.el-tree-node__loading-icon{margin-right:8px;font-size:14px;color:#c0c4cc;opacity:0;position:absolute}.el-cascader-node__postfix{position:absolute;right:10px;opacity:0}.el-pagination{display:flex;justify-content:center}.daochu,.item{cursor:pointer}.excon table td,.excon table th{border-bottom:1px solid #999;border-right:1px solid #999}.excon table th{background:#f5f2f0}.excon table{border-top:1px solid #999;border-left:1px solid #999;border-spacing:0}@font-face{font-family:Source Han Sans CN;src:url(/webstatic/fonts/SourceHanSansSC-Normal.038c55aa.otf);font-weight:400;font-style:normal}.pure-katex-container .mq-editable-field,.pure-katex-container .mq-math-mode,.pure-katex-container .mq-root-block,.pure-question-preview .mq-editable-field,.pure-question-preview .mq-math-mode,.pure-question-preview .mq-root-block{display:none!important;visibility:hidden!important;opacity:0!important;pointer-events:none!important}.pure-katex-container .katex,.pure-question-preview .katex{font-size:1.1em!important;display:inline-block!important;text-rendering:auto!important}.pure-katex-container .katex-display,.pure-question-preview .katex-display{display:block!important;margin:1em 0!important;text-align:center!important}.pure-katex-container .katex .array-environment,.pure-question-preview .katex .array-environment{display:inline-table!important;vertical-align:middle!important;margin:.5em auto!important}.pure-katex-container .katex .array-environment>.arraycolsep,.pure-question-preview .katex .array-environment>.arraycolsep{width:1em!important}.pure-katex-container .katex .array-environment>.col-align-c,.pure-question-preview .katex .array-environment>.col-align-c{text-align:center!important}.pure-katex-container .katex .array-environment>.col-align-l,.pure-question-preview .katex .array-environment>.col-align-l{text-align:left!important}.pure-katex-container .katex .array-environment>.col-align-r,.pure-question-preview .katex .array-environment>.col-align-r{text-align:right!important}.pure-katex-container .katex .delimsizing.size3,.pure-question-preview .katex .delimsizing.size3{vertical-align:top!important;transform:scaleY(1.5)!important;height:auto!important}.pure-katex-container .katex .mclose.delimsizing.size3,.pure-katex-container .katex .mopen.delimsizing.size3,.pure-question-preview .katex .mclose.delimsizing.size3,.pure-question-preview .katex .mopen.delimsizing.size3{vertical-align:middle!important;height:auto!important}.pure-katex-container .array-formula,.pure-question-preview .array-formula{max-width:100%!important;overflow-x:auto!important}.pure-katex-container .array-formula,.pure-katex-container .braces-formula,.pure-question-preview .array-formula,.pure-question-preview .braces-formula{padding:10px 0!important;margin:20px auto!important;text-align:center!important}.pure-katex-container .katex .mopen,.pure-question-preview .katex .mopen{margin-right:.05em!important}.pure-katex-container .katex .mclose,.pure-question-preview .katex .mclose{margin-left:.05em!important}.pure-katex-container .complex-formula,.pure-question-preview .complex-formula{display:block!important;margin:15px auto!important;text-align:center!important;overflow-x:auto!important;max-width:100%!important;padding:5px 0!important}.pure-katex-container .katex-display,.pure-question-preview .katex-display{overflow-y:hidden!important;overflow-x:auto!important;padding:3px 0!important;margin:.5em 0!important}.pure-katex-container .inline-formula,.pure-question-preview .inline-formula{display:inline-block!important;vertical-align:middle!important;margin:0 2px!important}.pure-katex-container .latex-code,.pure-question-preview .latex-code{display:block!important;font-family:monospace!important;background-color:#f5f5f5!important;padding:8px!important;border-radius:4px!important;white-space:pre-wrap!important;color:#333!important;margin:10px 0!important}.commonheader{background-color:#fff}.commonheader .top{width:100%;background:#f4f4f5;height:40px;color:#909399;min-width:1200px}.commonheader .top .centerbox{height:100%}.commonheader .rightbox p{padding:0 18px;border-right:1px solid #e3e3e6}.commonheader .rightbox p:last-child{border:0}.commonheader .rightbox i{color:#f56c6c}.centertop{padding:32px 0 27px}.commonheader .centertop .logo{width:242px;height:auto}.commonheader input{border:none;width:90px;outline:none}input::-webkit-input-placeholder{color:#c0c4cc}input:-moz-placeholder,input::-moz-placeholder{color:#c0c4cc}input:-ms-input-placeholder{color:#c0c4cc}.input1{height:40px;flex:1;width:240px}.inputbox{width:401px;height:42px;background:#fff;border:1px solid #409eff;border-radius:3px}.search{width:62px;height:42px;border-radius:0 2px 2px 0;align-items:center;justify-content:center;color:#fff;font-size:22px}.menu,.search{background:#409eff}.menu{width:100%;min-width:1200px}.menu,.menu .centerbox{height:50px}.menu a,.menu aside{flex:1}.commonheader .menu .ok,.menu a,.menu aside{text-align:center;color:#fff;height:100%;line-height:50px;cursor:pointer}.commonheader .menu .ok{width:300px}.menu .ok:hover,.menu aside:hover,.nowrouter{background:#3c97f1}.ok i{margin-left:47px}.dropdown{width:300px;padding:15px 15px;box-sizing:border-box}.dropdown b{font-weight:600;display:block;margin-bottom:10px}.dropdown ul{display:flex;flex-wrap:wrap}.dropdown li{margin-bottom:10px;margin-right:10px;color:#9f9f9f}.dropdown .light{color:#006ad3}.commonheader .el-input,.commonheader .el-select{width:100px}.footerbox{width:100%;text-align:center;height:60px;color:#909399;background-color:#303133;line-height:60px;min-width:1200px;margin-top:50px}.background{width:100%}.bannerbox{position:relative;height:400px}.bannerbox .background{position:absolute;min-width:1200px;width:100%;height:400px}.userbox{width:173px;height:217px;background:hsla(0,0%,100%,.5);border-radius:8px;position:relative;z-index:9}.atr img{width:72px;height:72px;border-radius:50%;margin-top:32px}.userbox p{margin:18px 0 15px;color:#fff}.comtitle{margin-bottom:9px}.comtitle aside{width:72px;height:18px;font-size:18px;color:#000;line-height:18px;border-bottom:3px solid #409eff;padding-bottom:13px}.comtitle aside,.more{font-family:Source Han Sans CN;font-weight:400}.more{font-size:14px;color:#909399}.commonlist{width:739px}.commonlist2{flex:1;margin-left:29px}.one{padding:9px 0}.commonlist .t{width:315px}.commonlist .t,.commonlist2 .t{overflow:hidden;white-space:nowrap;text-overflow:ellipsis;-o-text-overflow:ellipsis}.commonlist2 .t{width:209px}.commonlist i{color:#c0c4cc;font-weight:400}.home a{color:#333}.home{min-height:100vh}