.textbooks_bg .title[data-v-d6a47fea]{background-color:#fff;padding-left:19px;position:relative;font-size:18px;padding-bottom:10px;padding-top:20px;font-weight:700}.textbooks_bg .title[data-v-d6a47fea]:after{content:"";position:absolute;left:0;top:23px;width:4px;height:20px;background:#3d7fff}.textbooks_bg[data-v-d6a47fea] .el-submenu__title{font-size:16px;font-weight:700;font-family:Microsoft YaHei;display:flex;justify-content:space-between;align-items:center}.textbooks_bg[data-v-d6a47fea] .el-submenu__title span{flex:1}.textbooks_bg .nav_box[data-v-d6a47fea]{height:calc(100vh - 202px)}.textbooks_bg .nav_inner[data-v-d6a47fea]{background-color:#fff;position:absolute;width:calc(100% - 10px);left:10px}.textbooks_bg .files_scroll[data-v-d6a47fea]{height:calc(100vh - 248px)}.textbooks_bg .files_scroll[data-v-d6a47fea] .el-scrollbar__wrap{overflow-x:hidden!important}.textbooks_bg .menu_item[data-v-d6a47fea]{display:flex;justify-content:space-between;align-items:center;height:30px;line-height:30px}.textbooks_bg .menu_item p[data-v-d6a47fea]{flex:1}.textbooks_bg .menu_item .el-icon-lock[data-v-d6a47fea]{margin-right:0}.read_content[data-v-d816599c]{background-color:#fff;margin-bottom:68px;padding-bottom:30px}.read_content .back_box[data-v-d816599c]{display:flex;padding:0 20px;background-color:#fff;margin-bottom:10px}.read_content .back_box .back[data-v-d816599c]{padding:20px 0;cursor:pointer;color:#999}.read_content .back_box .back i[data-v-d816599c]{margin-right:15px}.read_content .back_box .back[data-v-d816599c]:hover{color:#333}.read_content .read_controller[data-v-d816599c]{padding:0 40px}.read_content .header_nav[data-v-d816599c]{padding-top:5px;display:flex;justify-content:space-around;padding-bottom:20px;background-color:#fff}.read_content .header_nav .nav_item[data-v-d816599c]{padding:0 8px;line-height:45px;position:relative;cursor:pointer}.read_content .header_nav .nav_item[data-v-d816599c]:after{transition:all .3s;content:"";width:26px;height:4px;background:transparent;position:absolute;bottom:0;left:50%;transform:translateX(-50%);border-radius:4px}.read_content .header_nav .nav_item.nav_active[data-v-d816599c]:after{background-color:#3d7fff}.read_content .reading_data_header[data-v-d816599c]{position:relative}.read_content .reading_data_header .immersive_reading[data-v-d816599c]{position:absolute;top:0;right:-48px;height:36px;width:36px;background-color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer}.read_content .reading_data_header .immersive_reading:hover .reading[data-v-d816599c]{display:none}.read_content .reading_data_header .immersive_reading:hover .readingh[data-v-d816599c]{display:block}.read_content .reading_data_header .immersive_reading .readingh[data-v-d816599c]{display:none}