.course-management[data-v-5ae9952c]{padding:20px}.statistics-card[data-v-5ae9952c]{margin-right:20px}.statistics-number[data-v-5ae9952c]{font-size:24px;font-weight:700;text-align:center;color:#409eff}.mb20[data-v-5ae9952c]{margin-bottom:20px}.course-content-preview[data-v-5ae9952c]{max-height:300px;overflow-y:auto;padding:12px;background:#fafafa;border:1px solid #e4e7ed;border-radius:4px;line-height:1.6}.content-editor-container[data-v-5ae9952c]{border:1px solid #dcdfe6;border-radius:4px}.ppt-editor-container[data-v-5ae9952c]{min-height:600px}.ppt-editor-toolbar[data-v-5ae9952c]{padding:12px;background:#f8f9fa;border-bottom:1px solid #e4e7ed;display:flex;align-items:center;justify-content:space-between}.ppt-editor-main[data-v-5ae9952c]{display:flex;height:500px}.slide-thumbnail-list[data-v-5ae9952c]{width:200px;background:#f5f5f5;border-right:1px solid #e4e7ed;overflow-y:auto;padding:8px}.slide-thumbnail[data-v-5ae9952c]{margin-bottom:8px;padding:8px;border:2px solid transparent;border-radius:4px;cursor:pointer;background:#fff;transition:all .3s}.slide-thumbnail[data-v-5ae9952c]:hover{border-color:#409eff;box-shadow:0 4px 8px rgba(64,158,255,.2)}.slide-thumbnail.active[data-v-5ae9952c]{border-color:#409eff;background:#ecf5ff}.slide-number[data-v-5ae9952c]{font-size:12px;color:#409eff;font-weight:700;margin-bottom:4px}.slide-preview h4[data-v-5ae9952c]{margin:0 0 4px;font-size:12px;color:#2c3e50;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.slide-preview p[data-v-5ae9952c]{margin:0;font-size:10px;color:#7f8c8d;line-height:1.4;height:28px;overflow:hidden}.slide-editor[data-v-5ae9952c]{flex:1;padding:16px;overflow-y:auto}.ppt-preview-container[data-v-5ae9952c]{padding:16px}.ppt-preview-controls[data-v-5ae9952c]{margin-bottom:16px;display:flex;align-items:center;justify-content:space-between;padding:12px;background:#f8f9fa;border-radius:4px}.ppt-slide-preview[data-v-5ae9952c]{text-align:center;position:relative;transition:all .3s ease}.slide-title[data-v-5ae9952c]{margin-bottom:24px;color:#2c3e50;font-weight:700}.slide-content[data-v-5ae9952c]{text-align:left;line-height:1.8}.ppt-export-options[data-v-5ae9952c]{padding:20px}.ppt-export-options .el-card[data-v-5ae9952c]{text-align:center;transition:transform .3s}.ppt-export-options .el-card[data-v-5ae9952c]:hover{transform:translateY(-4px);box-shadow:0 8px 25px rgba(0,0,0,.1)}.ppt-export-options h3[data-v-5ae9952c]{margin-bottom:12px;color:#2c3e50}.ppt-export-options p[data-v-5ae9952c]{color:#7f8c8d;margin-bottom:16px;font-size:14px}.slide-content-editor .el-textarea__inner[data-v-5ae9952c]{font-family:Monaco,Menlo,Ubuntu Mono,monospace;line-height:1.6}.ppt-editor-container .el-tabs__content[data-v-5ae9952c]{height:500px;overflow:hidden}.ppt-editor-container .el-tab-pane[data-v-5ae9952c]{height:100%}.discussion-content-preview[data-v-5ae9952c]{border:1px solid #e4e7ed;border-radius:4px;padding:16px;background:#fafafa}.discussion-content-preview h1[data-v-5ae9952c],.discussion-content-preview h2[data-v-5ae9952c],.discussion-content-preview h3[data-v-5ae9952c]{margin-top:16px;margin-bottom:8px;color:#2c3e50}.discussion-content-preview code[data-v-5ae9952c]{background:#f1f2f6;padding:2px 6px;border-radius:3px;font-family:Monaco,Menlo,Ubuntu Mono,monospace}.import-discussion-container[data-v-5ae9952c]{max-height:500px}.course-dialog.el-dialog--fullscreen[data-v-5ae9952c]{padding:0}.course-dialog.el-dialog--fullscreen .el-dialog__header[data-v-5ae9952c]{padding:20px 20px 10px}.course-dialog.el-dialog--fullscreen .el-dialog__body[data-v-5ae9952c]{padding:0 20px 20px;height:calc(100vh - 120px);overflow-y:auto}@media (max-width:1200px){.ppt-editor-main[data-v-5ae9952c]{flex-direction:column;height:auto}.slide-thumbnail-list[data-v-5ae9952c]{width:100%;height:150px;border-right:none;border-bottom:1px solid #e4e7ed;display:flex;overflow-x:auto;overflow-y:hidden}.slide-thumbnail[data-v-5ae9952c]{min-width:150px;margin-right:8px;margin-bottom:0}.slide-editor[data-v-5ae9952c]{height:400px;overflow-y:auto}}@media (max-width:768px){.markdown-editor-split[data-v-5ae9952c]{flex-direction:column}.markdown-edit-panel[data-v-5ae9952c],.markdown-preview-panel[data-v-5ae9952c]{flex:none;height:300px}.markdown-edit-panel[data-v-5ae9952c]{border-right:none;border-bottom:1px solid #e4e7ed}}.slide-thumbnail[data-v-5ae9952c]{transition:all .3s ease}.slide-thumbnail[data-v-5ae9952c]:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(64,158,255,.2)}.markdown-toolbar .el-button-group .el-button[data-v-5ae9952c]{transition:all .2s ease}.markdown-toolbar .el-button-group .el-button[data-v-5ae9952c]:hover{transform:translateY(-1px);box-shadow:0 2px 8px rgba(0,0,0,.1)}.html-editor-container[data-v-5ae9952c]{border:1px solid #dcdfe6;border-radius:4px}.html-code-editor textarea[data-v-5ae9952c]{font-family:Courier New,Consolas,Monaco,Andale Mono,Ubuntu Mono,monospace!important;font-size:14px;line-height:1.5;resize:vertical}.html-code-editor .el-textarea__inner[data-v-5ae9952c]{font-family:Courier New,Consolas,Monaco,Andale Mono,Ubuntu Mono,monospace!important;border:1px solid #e4e7ed;border-radius:4px;background-color:#fafafa}.html-code-editor .el-textarea__inner[data-v-5ae9952c]:focus{border-color:#409eff;background-color:#fff}.html-preview-container[data-v-5ae9952c]{background:#f5f5f5;border-radius:4px;padding:10px}.html-preview-frame[data-v-5ae9952c]{background:#fff;border-radius:4px;box-shadow:0 2px 12px 0 rgba(0,0,0,.1);transition:all .3s ease}.html-preview-frame[data-v-5ae9952c]:hover{box-shadow:0 4px 20px 0 rgba(0,0,0,.15)}.html-editor-toolbar[data-v-5ae9952c],.preview-toolbar[data-v-5ae9952c]{background:#f8f9fa;padding:10px;border-bottom:1px solid #e9ecef;border-radius:4px 4px 0 0}.html-editor-toolbar .el-button-group .el-button[data-v-5ae9952c],.preview-toolbar .el-button-group .el-button[data-v-5ae9952c]{transition:all .2s ease}.html-editor-toolbar .el-button-group .el-button[data-v-5ae9952c]:hover,.preview-toolbar .el-button-group .el-button[data-v-5ae9952c]:hover{transform:translateY(-1px);box-shadow:0 2px 8px rgba(0,0,0,.1)}.html-code-editor .el-textarea__inner[data-v-5ae9952c]{white-space:pre;overflow-wrap:normal;overflow-x:auto}.template-item[data-v-5ae9952c]:hover{background-color:#f0f9ff!important;border-color:#409eff!important;transform:translateY(-2px);box-shadow:0 4px 12px rgba(64,158,255,.2)!important}.iframe-editor-container[data-v-5ae9952c]{border:1px solid #dcdfe6;border-radius:4px}.iframe-url-input-container[data-v-5ae9952c]{margin-bottom:16px}.iframe-url-input .el-input-group__prepend[data-v-5ae9952c]{background-color:#f5f7fa;color:#909399;font-weight:500}.iframe-settings .el-form-item[data-v-5ae9952c]{margin-bottom:16px}.iframe-settings .el-form-item__label[data-v-5ae9952c]{color:#606266;font-weight:500}.iframe-tips[data-v-5ae9952c]{background:linear-gradient(135deg,#f0f9ff,#e0f2fe);border:1px solid #b3e5fc}.iframe-tips h5[data-v-5ae9952c]{display:flex;align-items:center;gap:6px}.iframe-tips li[data-v-5ae9952c]{margin-bottom:4px;line-height:1.5}.iframe-preview-container[data-v-5ae9952c]{background:#f5f5f5;border-radius:4px;padding:10px}.iframe-preview-frame-container[data-v-5ae9952c]{background:#fff;border-radius:8px;overflow:hidden;box-shadow:0 4px 12px rgba(0,0,0,.1)}.iframe-preview-frame[data-v-5ae9952c]{display:block;transition:all .3s ease}.iframe-preview-frame[data-v-5ae9952c]:hover{transform:scale(1.01)}.iframe-empty-state[data-v-5ae9952c]{background:linear-gradient(135deg,#f8f9fa,#e9ecef);border:2px dashed #dee2e6;border-radius:8px;transition:all .3s ease}.iframe-empty-state[data-v-5ae9952c]:hover{border-color:#409eff;background:linear-gradient(135deg,#f0f9ff,#e0f2fe)}.iframe-editor-toolbar[data-v-5ae9952c],.iframe-preview-toolbar[data-v-5ae9952c]{background:linear-gradient(135deg,#f8f9fa,#e9ecef);border-bottom:1px solid #dee2e6;padding:12px 16px;border-radius:4px 4px 0 0}.iframe-editor-toolbar .el-button-group .el-button[data-v-5ae9952c],.iframe-preview-toolbar .el-button-group .el-button[data-v-5ae9952c]{transition:all .3s ease;border:1px solid #dcdfe6}.iframe-editor-toolbar .el-button-group .el-button[data-v-5ae9952c]:hover,.iframe-preview-toolbar .el-button-group .el-button[data-v-5ae9952c]:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(0,0,0,.15)}@media (max-width:768px){.iframe-settings .el-col[data-v-5ae9952c]{margin-bottom:16px}.iframe-preview-toolbar .el-button-group[data-v-5ae9952c]{flex-wrap:wrap;gap:8px}.iframe-preview-toolbar span[data-v-5ae9952c]{display:block;margin-top:8px;margin-left:0!important}}.markdown-editor-container[data-v-5ae9952c]{border:1px solid #dcdfe6;border-radius:4px}.markdown-code-editor textarea[data-v-5ae9952c]{font-family:Courier New,Consolas,Monaco,Andale Mono,Ubuntu Mono,monospace!important;font-size:14px;line-height:1.6;resize:vertical}.markdown-code-editor .el-textarea__inner[data-v-5ae9952c]{font-family:Courier New,Consolas,Monaco,Andale Mono,Ubuntu Mono,monospace!important;border:1px solid #e4e7ed;border-radius:4px;background-color:#fafafa;line-height:1.6}.markdown-code-editor .el-textarea__inner[data-v-5ae9952c]:focus{border-color:#409eff;background-color:#fff}.markdown-input-container[data-v-5ae9952c]{margin-bottom:16px}.markdown-tips[data-v-5ae9952c]{background:linear-gradient(135deg,#f0f9ff,#e0f2fe);border:1px solid #b3e5fc}.markdown-tips h5[data-v-5ae9952c]{display:flex;align-items:center;gap:6px}.markdown-tips li[data-v-5ae9952c]{margin-bottom:4px;line-height:1.5}.markdown-preview-container[data-v-5ae9952c]{background:#f5f5f5;border-radius:4px;padding:10px}.markdown-slide-preview[data-v-5ae9952c]{background:#fff;border-radius:8px;overflow:hidden;box-shadow:0 4px 12px rgba(0,0,0,.1);margin-bottom:20px}.slide-content-preview[data-v-5ae9952c]{transition:all .3s ease;position:relative}.slide-content-preview[data-v-5ae9952c]:hover{transform:scale(1.01)}.markdown-empty-preview[data-v-5ae9952c]{background:linear-gradient(135deg,#f8f9fa,#e9ecef);border:2px dashed #dee2e6;border-radius:8px;transition:all .3s ease}.markdown-empty-preview[data-v-5ae9952c]:hover{border-color:#409eff;background:linear-gradient(135deg,#f0f9ff,#e0f2fe)}.markdown-editor-toolbar[data-v-5ae9952c],.markdown-preview-toolbar[data-v-5ae9952c]{background:linear-gradient(135deg,#f8f9fa,#e9ecef);border-bottom:1px solid #dee2e6;padding:12px 16px;border-radius:4px 4px 0 0}.markdown-editor-toolbar .el-button-group .el-button[data-v-5ae9952c],.markdown-preview-toolbar .el-button-group .el-button[data-v-5ae9952c]{transition:all .3s ease;border:1px solid #dcdfe6}.markdown-editor-toolbar .el-button-group .el-button[data-v-5ae9952c]:hover,.markdown-preview-toolbar .el-button-group .el-button[data-v-5ae9952c]:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(0,0,0,.15)}.slide-content-preview .code-block[data-v-5ae9952c]{background:rgba(0,0,0,.3);border-radius:8px;padding:20px;margin:20px 0;overflow-x:auto;border:1px solid hsla(0,0%,100%,.1)}.slide-content-preview .code-block code[data-v-5ae9952c]{color:#f8f8f2;font-family:Courier New,Consolas,Monaco,monospace;line-height:1.6;font-size:14px}.slide-content-preview .keyword[data-v-5ae9952c]{color:#66d9ef;font-weight:700}.slide-content-preview .string[data-v-5ae9952c]{color:#a6e22e}.slide-content-preview .number[data-v-5ae9952c]{color:#ae81ff}.slide-content-preview .comment[data-v-5ae9952c]{color:#75715e;font-style:italic}.slide-content-preview .inline-code[data-v-5ae9952c]{background:hsla(0,0%,100%,.2);padding:2px 6px;border-radius:4px;font-family:Courier New,Consolas,Monaco,monospace;font-size:.9em}.slide-content-preview blockquote[data-v-5ae9952c]{border-left:4px solid hsla(0,0%,100%,.8);padding-left:20px;margin:20px 0;font-style:italic;opacity:.9;background:hsla(0,0%,100%,.1);padding:15px 20px;border-radius:4px}.slide-content-preview ol[data-v-5ae9952c],.slide-content-preview ul[data-v-5ae9952c]{line-height:1.8;padding-left:30px}.slide-content-preview li[data-v-5ae9952c]{margin:8px 0}.slide-content-preview strong[data-v-5ae9952c]{color:gold;font-weight:700}.slide-content-preview em[data-v-5ae9952c]{color:#87ceeb;font-style:italic}.slide-content-preview a[data-v-5ae9952c]{color:#87ceeb;text-decoration:none;border-bottom:1px solid rgba(135,206,235,.5);transition:all .3s ease}.slide-content-preview a[data-v-5ae9952c]:hover{border-bottom-color:#87ceeb;color:#fff}.slide-content-preview img[data-v-5ae9952c]{max-width:100%;height:auto;margin:20px 0;border-radius:8px;box-shadow:0 4px 12px rgba(0,0,0,.3)}.slide-content-preview h1[data-v-5ae9952c]{font-size:2.5em;margin-bottom:.8em;color:#fff;text-shadow:0 2px 4px rgba(0,0,0,.3);border-bottom:3px solid hsla(0,0%,100%,.3);padding-bottom:.3em}.slide-content-preview h2[data-v-5ae9952c]{font-size:2em;margin-bottom:.6em;color:#fff;text-shadow:0 2px 4px rgba(0,0,0,.3)}.slide-content-preview h3[data-v-5ae9952c]{font-size:1.5em;margin-bottom:.5em;color:#fff;text-shadow:0 1px 2px rgba(0,0,0,.3)}.slide-content-preview p[data-v-5ae9952c]{line-height:1.8;margin-bottom:1em;font-size:1.1em}@media (max-width:768px){.markdown-tips div[data-v-5ae9952c]{grid-template-columns:1fr!important}.markdown-preview-toolbar .el-button-group[data-v-5ae9952c]{flex-wrap:wrap;gap:8px}.markdown-preview-toolbar span[data-v-5ae9952c]{display:block;margin-top:8px;margin-left:0!important}.slide-content-preview[data-v-5ae9952c]{padding:20px!important;font-size:.9em}.slide-content-preview h1[data-v-5ae9952c]{font-size:2em!important}.slide-content-preview h2[data-v-5ae9952c]{font-size:1.6em!important}.slide-content-preview h3[data-v-5ae9952c]{font-size:1.3em!important}}.problem-manage-container[data-v-5ae9952c]{min-height:400px}.problem-toolbar[data-v-5ae9952c]{display:flex;justify-content:flex-start;align-items:center;gap:10px;margin-bottom:15px}.empty-state[data-v-5ae9952c]{padding:40px 0;text-align:center}.problem-select-query[data-v-5ae9952c]{background:#f8f9fa;padding:15px;border-radius:4px;margin-bottom:15px}.el-tag[data-v-5ae9952c]{font-weight:500}.el-input-number--mini[data-v-5ae9952c]{width:80px}.el-switch[data-v-5ae9952c]{vertical-align:middle}.el-table .el-button--text[data-v-5ae9952c]{padding:0;margin:0 2px}.problem-manage-container .el-table[data-v-5ae9952c]{border-radius:4px}.problem-manage-container .el-table th[data-v-5ae9952c]{background-color:#fafafa;font-weight:600}.el-cascader .el-input[data-v-5ae9952c],.el-cascader[data-v-5ae9952c]{width:100%}.el-cascader-panel[data-v-5ae9952c]{border-radius:6px;box-shadow:0 4px 12px rgba(0,0,0,.1)}.el-cascader-menu[data-v-5ae9952c]{min-height:200px;max-height:300px}.el-cascader-node[data-v-5ae9952c]{position:relative;transition:all .2s ease}.el-cascader-node[data-v-5ae9952c]:hover{background-color:#f5f7fa}.el-cascader-node.is-active[data-v-5ae9952c]{background-color:#ecf5ff;color:#409eff;font-weight:500}.el-cascader-node__label[data-v-5ae9952c]{padding:8px 12px;font-size:14px;line-height:1.4}.el-cascader-node.has-children[data-v-5ae9952c]:after{content:"";position:absolute;right:12px;top:50%;transform:translateY(-50%);width:0;height:0;border-left:5px solid #c0c4cc;border-top:3px solid transparent;border-bottom:3px solid transparent}.el-cascader-node.has-children[data-v-5ae9952c]:hover:after{border-left-color:#909399}.el-cascader-node.has-children.is-active[data-v-5ae9952c]:after{border-left-color:#409eff}.el-cascader .el-input__inner[data-v-5ae9952c]{border-radius:4px;transition:all .3s ease}.el-cascader .el-input__inner[data-v-5ae9952c]:focus{border-color:#409eff;box-shadow:0 0 0 2px rgba(64,158,255,.1)}.el-cascader .el-input__suffix[data-v-5ae9952c]{transition:transform .3s ease}.el-cascader.is-focus .el-input__suffix[data-v-5ae9952c]{transform:rotate(180deg)}.el-cascader .el-tag[data-v-5ae9952c]{margin:2px 4px 2px 0;background-color:#f0f9ff;border-color:#b3e5fc;color:#409eff}.el-cascader .el-tag .el-icon-close[data-v-5ae9952c]{background-color:#409eff;color:#fff;border-radius:50%;transition:all .2s ease}.el-cascader .el-tag .el-icon-close[data-v-5ae9952c]:hover{background-color:#66b1ff}.statistics-section[data-v-5ae9952c]{margin-bottom:20px}.stat-card[data-v-5ae9952c]{background:linear-gradient(135deg,#667eea,#764ba2);border-radius:12px;padding:20px;color:#fff;box-shadow:0 4px 20px rgba(0,0,0,.1);transition:all .3s ease;cursor:pointer;position:relative;overflow:hidden}.stat-card[data-v-5ae9952c]:hover{transform:translateY(-5px);box-shadow:0 8px 30px rgba(0,0,0,.15)}.stat-card[data-v-5ae9952c]:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(135deg,hsla(0,0%,100%,.1),hsla(0,0%,100%,.05));pointer-events:none}.stat-card.draft[data-v-5ae9952c]{background:linear-gradient(135deg,#f093fb,#f5576c)}.stat-card.published[data-v-5ae9952c]{background:linear-gradient(135deg,#4facfe,#00f2fe)}.stat-card.offline[data-v-5ae9952c]{background:linear-gradient(135deg,#43e97b,#38f9d7)}.stat-card.total[data-v-5ae9952c]{background:linear-gradient(135deg,#fa709a,#fee140)}.stat-card .stat-icon[data-v-5ae9952c]{position:absolute;top:15px;right:15px;font-size:24px;opacity:.8}.stat-card .stat-content[data-v-5ae9952c]{position:relative;z-index:1}.stat-card .stat-number[data-v-5ae9952c]{font-size:32px;font-weight:700;margin-bottom:5px;text-shadow:0 2px 4px rgba(0,0,0,.1)}.stat-card .stat-label[data-v-5ae9952c]{font-size:14px;opacity:.9;font-weight:500}@media (max-width:768px){.problem-manage-container .el-dialog[data-v-5ae9952c]{width:95%!important}.problem-toolbar[data-v-5ae9952c]{flex-direction:column;align-items:stretch}.problem-toolbar .el-button[data-v-5ae9952c]{margin-bottom:10px}.el-cascader-panel[data-v-5ae9952c]{max-height:250px}.el-cascader-menu[data-v-5ae9952c]{min-width:120px}.el-cascader-node__label[data-v-5ae9952c]{padding:6px 10px;font-size:13px}.stat-card[data-v-5ae9952c]{margin-bottom:10px;padding:15px}.stat-card .stat-number[data-v-5ae9952c]{font-size:24px}.stat-card .stat-icon[data-v-5ae9952c]{font-size:20px}}