diff --git a/platform/frontend/topics.html b/platform/frontend/topics.html
index bc7f65a..7f60edf 100644
--- a/platform/frontend/topics.html
+++ b/platform/frontend/topics.html
@@ -8,7 +8,7 @@
     <link rel="stylesheet" href="theme-modern.css">
     <style>
         .selected-count { color: var(--color-text-secondary); font-size: var(--font-size-body); margin-left: auto; }
-        .preview-dialog-custom .el-dialog__body { overflow-y: auto; max-height: calc(90vh - 120px); padding: 16px 20px; }
+        .preview-dialog-custom .el-dialog__body { overflow-y: auto; max-height: calc(90vh - 120px); min-height: 400px; padding: 16px 20px; }
         .preview-dialog-custom .preview-body { max-height: calc(90vh - 180px); min-height: 300px; overflow: auto; }
         .preview-dialog-custom .preview-body img { max-width: 100%; }
         .topic-card-list { display: none; }
diff --git a/scripts/writer.py b/scripts/writer.py
index ffa3229..0c48aaf 100644
--- a/scripts/writer.py
+++ b/scripts/writer.py
@@ -143,6 +143,8 @@ class Writer:
             return True
         if stripped.startswith('*大纲'):
             return True
+        if re.match(r'^\*{0,3}【[^】]*】\*{0,3}\s*$', stripped):
+            return True
         return False
 
     def _is_bullet_only(self, text: str) -> bool: