修复主题一些细节优化问题

write/src/components/ShortcutPanel.tsx

@@ -43,7 +43,7 @@ export default function ShortcutPanel({ textareaRef, value, onChange }: Shortcut
   return (
     <div>
       <h3 className="text-[11px] font-medium text-muted uppercase tracking-wider mb-3">快捷插入</h3>
-      <div className="bg-white border border-line rounded-lg p-3 space-y-1">
+      <div className="bg-card border border-line rounded-lg p-3 space-y-1">
         {shortcuts.map((s) => (
           <button
             key={s.label}