diff --git a/public/architectui/assets/styles/custom.css b/public/architectui/assets/styles/custom.css
index a768cdd..283b1b9 100644
--- a/public/architectui/assets/styles/custom.css
+++ b/public/architectui/assets/styles/custom.css
@@ -69,6 +69,21 @@ select option {
     flex: 0 0 220px !important;
 }
 
+/* 메인 컨텐츠 영역 왼쪽 여백 조정: 280px -> 220px */
+.fixed-sidebar .app-main .app-main__outer {
+    padding-left: 220px !important;
+}
+
+/* 헤더 왼쪽 여백 조정 */
+.fixed-sidebar:not(.fixed-header) .app-header {
+    margin-left: 220px !important;
+}
+
+/* 푸터 왼쪽 여백 조정 */
+.fixed-footer .app-footer .app-footer__inner {
+    margin-left: 220px !important;
+}
+
 /* 사이드바 내부 여백 조정: 1.5rem -> 0.75rem */
 .app-sidebar .app-sidebar__inner {
     padding: 2px 0.75rem 0.75rem !important;