fix(creator-studio): render math/footnote shortcodes, inline code blocks, block deletion

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

assets/css/frontend/pages/submit-editor.css

@@ -124,18 +124,6 @@
   white-space: break-spaces;
 }
 
-.enlighter-pre code.gl::before {
-  position: absolute;
-  top: 8px;
-  right: 8px;
-  padding: 3px 8px;
-  border-radius: 4px;
-  background: linear-gradient(135deg, #3dcabd 10%, #254bdd 100%);
-  color: #fff;
-  content: '高亮代码';
-  font-size: 12px;
-}
-
 .file-download-box {
   margin-bottom: 20px;
   padding: 15px;
@@ -190,3 +178,11 @@
   width: 100%;
   height: 100%;
 }
+
+/* 编辑器内的注释上标（发布后由服务端换成脚注列表） */
+.mce-content-body sup.jio-footnote-ref,
+.tox .jio-footnote-ref {
+  color: var(--theme-color, #267665);
+  font-size: 0.8em;
+  vertical-align: super;
+}

assets/css/tinymce.css

@@ -255,7 +255,7 @@ code.gl {
 }
 
 code.gl::before {
-    content: '高亮代码';
+    content: attr(data-enlighter-language);
     position: absolute;
     right: 6px;
     top: 8px;