Mesmo padrao do botao: C++ Abstract -> WBP concreto. PanelType (Primary/Secondary/Tertiary/Card) escolhe Bg/BgRaised/BgSunken/CardSelected; bRoundedBackground (RoundedBox + borda do tema); bUseSmallPadding. Background(UBorder) + Content(UNamedSlot) BindWidgetOptional. RefreshUIStyle resolve FUIStyle.Panel via UZMMOThemeSubsystem, reage a OnThemeChanged; BP_ApplyPanelStyle como hook. Compila OK. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>