UPDATE: VERSION-20260314

modeler/src/style.less

@@ -1767,4 +1767,55 @@
     line-height: 26px;
     cursor: pointer;
   }
+}
+
+
+
+.ant-collapse {
+  .ant-list-sm {
+    .ant-list-item {
+      padding: 4px 15px;
+      cursor: pointer;
+      color: rgb(130 196 233);
+      position: relative;
+
+      .ks-tree-actions {
+        position: absolute;
+        right: 10px;
+        display: none;
+      }
+
+      &:hover {
+        background: #0d2d4e;
+
+        .ks-tree-actions {
+          display: block;
+        }
+      }
+
+    }
+  }
+
+  &.ks-trees-collapse {
+
+    .ant-collapse-content-box {
+      padding: 0;
+      height: 40vh;
+      position: relative;
+    }
+  }
+}
+
+.create-tree-icon {
+  cursor: pointer;
+}
+
+.ant-list-item {
+  padding: 3px 5px;
+  cursor: pointer;
+  color: rgb(130 196 233);
+
+  &:hover {
+    background: #0d2d4e;
+  }
 }