lesson more edit

Html/apps/static/css/lesson.css

@@ -55,13 +55,50 @@
 }
 
 #outline-tree li.lvl2 {
-  padding-left: 20px;
+  padding-left: 1px;
 }
 
 #outline-tree li.lvl3 {
-  padding-left: 40px;
+  padding-left: 20px;
 }
 
+
+
+
+/* 删除模式下可删除的节点样式 */
+  .outline.delete-mode #outline-tree .lvl2,
+  .outline.delete-mode #outline-tree .lvl3 {
+    border: 1px solid #dc2626;         /* 红色边框 */
+    border-radius: 6px;
+    padding: 4px 6px;
+    transition: background-color .15s ease, box-shadow .15s ease;
+    cursor: pointer;
+  }
+  .outline.delete-mode #outline-tree .lvl2:hover,
+  .outline.delete-mode #outline-tree .lvl3:hover {
+    background: rgba(220,38,38,.06);   /* 微红背景 */
+    box-shadow: 0 0 0 2px rgba(220,38,38,.15) inset;
+  }
+
+  /* 删除按钮样式（可按需调整） */
+  .delete-btn {
+    margin-left: 6px;
+    border: none;
+    background: transparent;
+    cursor: pointer;
+    padding: 6px;
+    border-radius: 8px;
+  }
+  .delete-btn[aria-pressed="true"] {
+    background: rgba(220,38,38,.12);
+    outline: 2px solid #dc2626;
+  }
+  .delete-btn:focus-visible { outline: 2px solid #4c9ffe; }
+
+
+
+
+
   .details-header { display:flex; justify-content:space-between; align-items:center; }
   .close-btn { border:none; background:transparent; font-size:22px; cursor:pointer; }