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button{color:var(--main-color,var(--legacy-color-021));font-size:14px;background:transparent;border:0}.mobile-category-body{display:grid;min-height:0;flex:1;grid-template-columns:95px 1fr}.mobile-category-left{min-height:0;overflow-y:auto;background:var(--legacy-color-146);-webkit-overflow-scrolling:touch}.mobile-category-left button{position:relative;display:block;width:100%;height:45px;padding:0 10px;overflow:hidden;color:var(--legacy-color-147);font-size:14px;line-height:45px;text-align:center;text-overflow:ellipsis;white-space:nowrap;background:var(--legacy-color-146);border:0;border-bottom:1px solid var(--legacy-color-002)}.mobile-category-left button.active{color:var(--main-color,var(--legacy-color-021));background:var(--legacy-color-002)}.mobile-category-left button.active:before{position:absolute;top:11px;left:0;width:2px;height:23px;background:var(--main-color,var(--legacy-color-021));content:""}.mobile-category-right{min-width:0;min-height:0;overflow-y:auto;padding:10px;-webkit-overflow-scrolling:touch}.mobile-category-all,.mobile-category-group button{height:38px;max-width:100%;padding:0 12px;overflow:hidden;color:var(--legacy-color-125);font-size:13px;line-height:38px;text-align:center;text-overflow:ellipsis;white-space:nowrap;background:var(--legacy-color-120);border:0;border-radius:4px}.mobile-category-all{display:block;width:100%;margin:5px 0 16px}.mobile-category-group{margin-bottom:16px}.mobile-category-group h3{margin-bottom:10px;color:var(--legacy-color-148);font-size:14px;font-weight:600;line-height:20px}.mobile-category-group div{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.mobile-category-all:active,.mobile-category-group 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h1{height:56px;font-size:18px;line-height:56px}.account-form{width:100%;padding-top:2px}.account-form label{display:block;margin-top:16px}.account-form label>span{display:block;margin-bottom:7px;text-align:left}.account-form input,.account-inline,.account-links,.account-submit{width:100%}.account-inline{gap:8px}.account-inline input{width:0;min-width:0;flex:1}.captcha-box,.code-btn{width:108px;flex:0 0 108px;font-size:13px}.code-btn{width:128px;flex-basis:128px}.account-submit{margin-top:22px}.account-links,.account-message{padding-left:0}}@media(max-width:374px){#teacher .clearfix,.course-grid,.home-video-box,.home-video-box .video-list,.home-video-box.video-box-s .video-list,.knowledge-list,.news-list,.news-slide,.teacher-list{grid-template-columns:1fr}.teacher{width:100%}}.app-shell{--el-color-primary:var(--main-color,var(--legacy-color-021));--el-color-primary-light-3:color-mix(in srgb,var(--main-color,var(--legacy-color-021)) 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30px}.detail-catalogue-modern{border-top:0;border-bottom:0}.detail-catalogue-modern .el-collapse-item__header{min-height:50px;padding:0 14px;color:var(--legacy-color-137);font-size:15px;font-weight:700;background:var(--legacy-color-036);border-radius:8px}.detail-catalogue-modern .el-collapse-item__wrap{border-bottom:0}.detail-file-list-modern{padding:8px 0 0}.detail-file-list-modern li{display:flex;min-height:46px;align-items:center;justify-content:space-between;gap:16px;padding:10px 14px;cursor:pointer;border-bottom:1px solid var(--legacy-color-159);transition:background .18s ease}.detail-file-list-modern li:hover{background:var(--color-brand-soft)}.class-course-list-modern{display:grid;gap:12px}.class-course-card-modern{display:grid;grid-template-columns:148px minmax(0,1fr) 136px;gap:16px;align-items:center;padding:14px;color:var(--color-text-strong);text-decoration:none;border:1px solid var(--color-border-soft);border-radius:8px;background:var(--legacy-color-002);transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease}.class-course-card-modern:hover{border-color:var(--legacy-color-160);box-shadow:0 12px 28px var(--color-brand-ring);transform:translateY(-1px)}.class-course-card-modern img{width:148px;aspect-ratio:16/9;-o-object-fit:cover;object-fit:cover;border-radius:6px;background:var(--legacy-color-161)}.class-course-main-modern{min-width:0}.class-course-title-row-modern{display:flex;min-width:0;align-items:center;gap:10px}.class-course-title-row-modern h3{min-width:0;margin:0;overflow:hidden;color:var(--color-text-strong);font-size:16px;line-height:24px;text-overflow:ellipsis;white-space:nowrap}.class-course-meta-modern{display:flex;flex-wrap:wrap;gap:8px 16px;margin:10px 0 0;color:var(--legacy-color-162);font-size:13px;line-height:20px}.class-course-action-modern{display:grid;gap:10px;justify-items:end}.class-course-action-modern strong{color:var(--legacy-color-163);font-size:18px;line-height:24px}.modern-comment-editor{margin-bottom:18px;background:var(--legacy-color-036)}.modern-comment-editor .el-card__body{display:grid;gap:14px}.comment-score{display:flex;align-items:center;justify-content:space-between;gap:16px}.comment-actions{display:flex;justify-content:flex-end}.modern-detail-comments{display:grid;gap:14px}.modern-detail-comments .detail-comment{display:block}.modern-detail-comments .detail-comment .el-card__body{display:grid;grid-template-columns:48px 1fr;gap:12px}.modern-interaction-nav{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-bottom:18px}.interaction-nav-card{cursor:pointer;border:1px solid var(--color-border-soft)}.interaction-nav-card .el-card__body{display:grid;gap:6px;justify-items:start}.interaction-nav-card.active{border-color:var(--main-color,var(--legacy-color-021));background:var(--color-brand-soft)}.resource-table-modern{border:1px solid 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:is(.el-alert__close-btn,.el-alert__description){color:var(--el-color-white)}.el-alert.is-center{justify-content:center}.el-alert--primary{--el-alert-bg-color:var(--el-color-primary-light-9)}.el-alert--primary.is-light{background-color:var(--el-alert-bg-color)}.el-alert--primary.is-light,.el-alert--primary.is-light .el-alert__description{color:var(--el-color-primary)}.el-alert--primary.is-dark{background-color:var(--el-color-primary);color:var(--el-color-white)}.el-alert--success{--el-alert-bg-color:var(--el-color-success-light-9)}.el-alert--success.is-light{background-color:var(--el-alert-bg-color)}.el-alert--success.is-light,.el-alert--success.is-light .el-alert__description{color:var(--el-color-success)}.el-alert--success.is-dark{background-color:var(--el-color-success);color:var(--el-color-white)}.el-alert--info{--el-alert-bg-color:var(--el-color-info-light-9)}.el-alert--info.is-light{background-color:var(--el-alert-bg-color)}.el-alert--info.is-light,.el-alert--info.is-light .el-alert__description{color:var(--el-color-info)}.el-alert--info.is-dark{background-color:var(--el-color-info);color:var(--el-color-white)}.el-alert--warning{--el-alert-bg-color:var(--el-color-warning-light-9)}.el-alert--warning.is-light{background-color:var(--el-alert-bg-color)}.el-alert--warning.is-light,.el-alert--warning.is-light .el-alert__description{color:var(--el-color-warning)}.el-alert--warning.is-dark{background-color:var(--el-color-warning);color:var(--el-color-white)}.el-alert--error{--el-alert-bg-color:var(--el-color-error-light-9)}.el-alert--error.is-light{background-color:var(--el-alert-bg-color)}.el-alert--error.is-light,.el-alert--error.is-light .el-alert__description{color:var(--el-color-error)}.el-alert--error.is-dark{background-color:var(--el-color-error);color:var(--el-color-white)}.el-alert__content{flex-direction:column;gap:4px;display:flex}.el-alert .el-alert__icon{font-size:var(--el-alert-icon-size);width:var(--el-alert-icon-size);margin-right:8px}.el-alert .el-alert__icon.is-big{font-size:var(--el-alert-icon-large-size);width:var(--el-alert-icon-large-size);margin-right:12px}.el-alert__title{font-size:var(--el-alert-title-font-size);line-height:24px}.el-alert__title.with-description{font-size:var(--el-alert-title-with-description-font-size)}.el-alert .el-alert__description{font-size:var(--el-alert-description-font-size);margin:0}.el-alert .el-alert__close-btn{font-size:var(--el-alert-close-font-size);opacity:1;cursor:pointer;position:absolute;top:12px;right:16px}.el-alert .el-alert__close-btn.is-customed{font-style:normal;font-size:var(--el-alert-close-customed-font-size);line-height:24px;top:8px}.el-alert-fade-enter-from,.el-alert-fade-leave-active{opacity:0}.el-overlay{z-index:2000;background-color:var(--el-overlay-color-lighter);height:100%;position:fixed;inset:0;overflow:auto}.el-overlay .el-overlay-root{height:0}:root{--el-popup-modal-bg-color:var(--el-color-black);--el-popup-modal-opacity:.5}.v-modal-enter{animation:v-modal-in var(--el-transition-duration-fast) ease}.v-modal-leave{animation:v-modal-out var(--el-transition-duration-fast) ease forwards}@keyframes v-modal-in{0%{opacity:0}}@keyframes v-modal-out{to{opacity:0}}.v-modal{width:100%;height:100%;opacity:var(--el-popup-modal-opacity);background:var(--el-popup-modal-bg-color);position:fixed;top:0;left:0}.el-popup-parent--hidden{overflow:hidden}.el-dialog{--el-dialog-width:50%;--el-dialog-margin-top:15vh;--el-dialog-bg-color:var(--el-bg-color);--el-dialog-box-shadow:var(--el-box-shadow);--el-dialog-title-font-size:var(--el-font-size-large);--el-dialog-content-font-size:14px;--el-dialog-font-line-height:var(--el-font-line-height-primary);--el-dialog-padding-primary:16px;--el-dialog-border-radius:var(--el-border-radius-base);margin:var(--el-dialog-margin-top,15vh) auto 50px;background:var(--el-dialog-bg-color);border-radius:var(--el-dialog-border-radius);box-shadow:var(--el-dialog-box-shadow);box-sizing:border-box;padding:var(--el-dialog-padding-primary);width:var(--el-dialog-width,50%);overflow-wrap:break-word;position:relative}.el-dialog:focus{outline:none!important}.el-dialog.is-align-center{margin:auto}.el-dialog.is-fullscreen{--el-dialog-width:100%;--el-dialog-margin-top:0;border-radius:0;height:100%;margin-bottom:0;overflow:auto}.el-dialog__wrapper{margin:0;position:fixed;inset:0;overflow:auto}.el-dialog.is-draggable .el-dialog__header{cursor:move;-webkit-user-select:none;user-select:none}.el-dialog__header{padding-bottom:var(--el-dialog-padding-primary)}.el-dialog__header.show-close{padding-right:calc(var(--el-dialog-padding-primary) + var(--el-message-close-size,16px))}.el-dialog__headerbtn{cursor:pointer;width:48px;height:48px;font-size:var(--el-message-close-size,16px);background:0 0;border:none;outline:none;padding:0;position:absolute;top:0;right:0}.el-dialog__headerbtn .el-dialog__close{color:var(--el-color-info);font-size:inherit}:is(.el-dialog__headerbtn:focus,.el-dialog__headerbtn:hover) .el-dialog__close{color:var(--el-color-primary)}.el-dialog__title{line-height:var(--el-dialog-font-line-height);font-size:var(--el-dialog-title-font-size);color:var(--el-text-color-primary)}.el-dialog__body{color:var(--el-text-color-regular);font-size:var(--el-dialog-content-font-size)}.el-dialog__footer{padding-top:var(--el-dialog-padding-primary);text-align:right;box-sizing:border-box}.el-dialog--center{text-align:center}.el-dialog--center .el-dialog__body{text-align:initial}.el-dialog--center .el-dialog__footer{text-align:inherit}.el-modal-dialog.is-penetrable{pointer-events:none}.el-modal-dialog.is-penetrable .el-dialog{pointer-events:auto}.el-overlay-dialog{position:fixed;inset:0;overflow:auto}.el-overlay-dialog.is-closing .el-dialog{pointer-events:none}.dialog-fade-enter-active{animation:modal-fade-in var(--el-transition-duration)}.dialog-fade-enter-active .el-overlay-dialog{animation:dialog-fade-in var(--el-transition-duration)}.dialog-fade-leave-active{animation:modal-fade-out var(--el-transition-duration)}.dialog-fade-leave-active .el-overlay-dialog{animation:dialog-fade-out var(--el-transition-duration)}@keyframes dialog-fade-in{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translate(0)}}@keyframes dialog-fade-out{0%{opacity:1;transform:translate(0)}to{opacity:0;transform:translateY(-20px)}}@keyframes modal-fade-in{0%{opacity:0}to{opacity:1}}@keyframes modal-fade-out{0%{opacity:1}to{opacity:0}}.auth-account-button[data-v-19f3944f],.auth-wechat-button[data-v-19f3944f]{width:100%;margin:10px 0 0}.wechat-login-panel[data-v-19f3944f]{min-height:420px}.wechat-login-frame[data-v-19f3944f]{display:block;width:100%;height:390px;border:1px solid var(--color-border);background:var(--color-bg)}.el-empty{--el-empty-padding:40px 0;--el-empty-image-width:160px;--el-empty-description-margin-top:20px;--el-empty-bottom-margin-top:20px;--el-empty-fill-color-0:var(--el-color-white);--el-empty-fill-color-1:#fcfcfd;--el-empty-fill-color-2:#f8f9fb;--el-empty-fill-color-3:#f7f8fc;--el-empty-fill-color-4:#eeeff3;--el-empty-fill-color-5:#edeef2;--el-empty-fill-color-6:#e9ebef;--el-empty-fill-color-7:#e5e7e9;--el-empty-fill-color-8:#e0e3e9;--el-empty-fill-color-9:#d5d7de;text-align:center;box-sizing:border-box;padding:var(--el-empty-padding);flex-direction:column;justify-content:center;align-items:center;display:flex}.el-empty__image{width:var(--el-empty-image-width)}.el-empty__image img{-webkit-user-select:none;user-select:none;vertical-align:top;object-fit:contain;width:100%;height:100%}.el-empty__image svg{color:var(--el-svg-monochrome-grey);fill:currentColor;vertical-align:top;width:100%;height:100%}.el-empty__description{margin-top:var(--el-empty-description-margin-top)}.el-empty__description p{font-size:var(--el-font-size-base);color:var(--el-text-color-secondary);margin:0}.el-empty__bottom{margin-top:var(--el-empty-bottom-margin-top)}:root{--el-loading-spinner-size:42px;--el-loading-fullscreen-spinner-size:50px}.el-loading-parent--relative{position:relative!important}.el-loading-parent--hidden{overflow:hidden!important}.el-loading-mask{z-index:2000;background-color:var(--el-mask-color);transition:opacity var(--el-transition-duration);margin:0;position:absolute;inset:0}.el-loading-mask.is-fullscreen{position:fixed}.el-loading-mask.is-fullscreen .el-loading-spinner{margin-top:calc((0px - var(--el-loading-fullscreen-spinner-size))/2)}.el-loading-mask.is-fullscreen .el-loading-spinner .circular{height:var(--el-loading-fullscreen-spinner-size);width:var(--el-loading-fullscreen-spinner-size)}.el-loading-spinner{margin-top:calc((0px - var(--el-loading-spinner-size))/2);text-align:center;width:100%;position:absolute;top:50%}.el-loading-spinner .el-loading-text{color:var(--el-color-primary);margin:3px 0;font-size:14px}.el-loading-spinner .circular{height:var(--el-loading-spinner-size);width:var(--el-loading-spinner-size);animation:loading-rotate 2s linear infinite;display:inline}.el-loading-spinner .path{stroke-dasharray:90 150;stroke-dashoffset:0;stroke-width:2px;stroke:var(--el-color-primary);stroke-linecap:round;animation:loading-dash 1.5s ease-in-out infinite}.el-loading-spinner i{color:var(--el-color-primary)}.el-loading-fade-enter-from,.el-loading-fade-leave-to{opacity:0}@keyframes loading-rotate{to{transform:rotate(1turn)}}@keyframes loading-dash{0%{stroke-dasharray:1 200;stroke-dashoffset:0}50%{stroke-dasharray:90 150;stroke-dashoffset:-40px}to{stroke-dasharray:90 150;stroke-dashoffset:-120px}}.captcha-dialog__body[data-v-9bc66f8d]{min-height:220px}.captcha-dialog__error[data-v-9bc66f8d]{margin-top:12px}.captcha-dialog__status[data-v-9bc66f8d]{margin:12px 0 0;color:var(--color-text-secondary);text-align:center}.captcha-dialog .el-dialog__body{padding:16px 30px 24px}@media(max-width:375px){.captcha-dialog{width:calc(100vw - 8px)!important}.captcha-dialog .el-dialog__body{padding-right:6px;padding-left:6px}}