.course-editor-shell{display:grid;grid-template-columns:230px minmax(0,1fr);gap:16px;align-items:start}.course-editor-shell aside{position:sticky;top:0;max-height:68vh;overflow:auto;padding:10px;background:#f5f7fc;border:1px solid var(--color-border);border-radius:12px}.course-editor-sidebar-title{padding:8px 10px;color:var(--color-text-light);font-size:12px;font-weight:700}.course-editor-lesson{display:flex;width:100%;margin:0 0 6px;padding:10px;border:1px solid transparent;border-radius:9px;background:transparent;color:var(--color-text);text-align:left;flex-direction:column;gap:3px;cursor:pointer}.course-editor-lesson span{color:var(--color-text-light);font-size:11px}.course-editor-lesson strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.course-editor-lesson:hover,.course-editor-lesson.active{border-color:#b8caff;background:#fff;color:#2458e8}.course-editor-add{width:100%;margin-top:8px}.course-editor-shell main{min-width:0}.course-editor-section{margin-bottom:14px;padding:16px;border:1px solid var(--color-border);border-radius:12px;background:#fff}.course-editor-section h3{margin:0 0 12px;font-size:16px}.course-editor-title-row,.course-editor-item-head,.course-editor-source{display:flex;align-items:center;justify-content:space-between;gap:10px}.course-editor-title-row>div{display:flex;gap:6px}.course-editor-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.course-editor-section label,.course-editor-item label{display:block;color:var(--color-text-light);font-size:12px}.course-editor-section label .form-input,.course-editor-section label .form-textarea,.course-editor-item label .form-input{margin-top:5px;color:var(--color-text);font-size:14px}.course-editor-item{margin-top:10px;padding:12px;border:1px solid #e2e8f5;border-radius:10px;background:#fafbfe}.course-editor-item-head{margin-bottom:10px}.course-editor-source{margin-top:10px;align-items:end}.course-editor-source label{flex:1}.course-upload-progress{min-height:18px;margin-top:6px;color:#3366ff;font-size:12px}.course-editor-advanced{padding:14px;border:1px dashed #b9c5de;border-radius:10px}.course-editor-advanced summary{cursor:pointer;font-weight:700}.course-editor-advanced textarea{min-height:360px;margin:12px 0;font:12px/1.5 Consolas,monospace}.modal.wide .modal-container{width:min(1180px,94vw)}
@media(max-width:800px){.course-editor-shell{grid-template-columns:1fr}.course-editor-shell aside{position:static;display:flex;max-height:none;overflow:auto}.course-editor-sidebar-title{display:none}.course-editor-lesson{min-width:150px}.course-editor-add{min-width:120px}.course-editor-grid{grid-template-columns:1fr}.course-editor-source{align-items:stretch;flex-direction:column}.course-editor-source button{width:100%}}