diff --git a/devfront/src/features/clients/ClientGeneralPage.claims.test.tsx b/devfront/src/features/clients/ClientGeneralPage.claims.test.tsx
index 726bfe06..b0d02820 100644
--- a/devfront/src/features/clients/ClientGeneralPage.claims.test.tsx
+++ b/devfront/src/features/clients/ClientGeneralPage.claims.test.tsx
@@ -450,6 +450,46 @@ describe("ClientGeneralPage RP claims", () => {
     expect(scopeInputs.some((input) => input.value === "old_claim")).toBe(true);
   });
 
+  it("shows the offline_access guide in the scopes section and expands its details", async () => {
+    const { container } = await renderPage();
+
+    expect(container.textContent).toContain(
+      "Refresh token 사용 시 offline_access scope가 필요합니다.",
+    );
+    expect(container.textContent).toContain(
+      "scope 목록에 offline_access를 포함하고",
+    );
+
+    const guideToggleButton = Array.from(
+      container.querySelectorAll("button"),
+    ).find((button) =>
+      (button.getAttribute("aria-label") ?? "").includes(
+        "offline_access 상세 안내 보기",
+      ),
+    );
+    expect(guideToggleButton).toBeDefined();
+
+    await act(async () => {
+      guideToggleButton?.dispatchEvent(
+        new MouseEvent("click", { bubbles: true }),
+      );
+    });
+    await flush();
+
+    expect(container.textContent).toContain(
+      "Hydra 기준으로 refresh token 발급 조건",
+    );
+    expect(container.textContent).toContain(
+      "authorization request scope에 offline 또는 offline_access 포함",
+    );
+    expect(container.textContent).toContain(
+      "consent accept의 granted_scope에 offline 또는 offline_access 포함",
+    );
+    expect(container.textContent).toContain(
+      "client grant_types에 refresh_token 포함",
+    );
+  });
+
   it("blocks saving a number RP claim default value that is not numeric", async () => {
     const { container } = await renderPage();
 
diff --git a/devfront/src/features/clients/ClientGeneralPage.tsx b/devfront/src/features/clients/ClientGeneralPage.tsx
index c68afeec..ca917138 100644
--- a/devfront/src/features/clients/ClientGeneralPage.tsx
+++ b/devfront/src/features/clients/ClientGeneralPage.tsx
@@ -639,6 +639,8 @@ function ClientGeneralPage() {
   const [headlessLoginEnabled, setHeadlessLoginEnabled] = useState(false);
 
   const [isScopePickerOpen, setIsScopePickerOpen] = useState(false);
+  const [isOfflineAccessGuideOpen, setIsOfflineAccessGuideOpen] =
+    useState(false);
   const [scopes, setScopes] = useState<ScopeItem[]>(() => [
     {
       id: "1",
@@ -1970,6 +1972,77 @@ function ClientGeneralPage() {
           </Button>
         </CardHeader>
         <CardContent className="space-y-6">
+          <div className="rounded-xl border border-amber-500/30 bg-amber-500/10 p-4">
+            <div className="flex items-start justify-between gap-3">
+              <div className="space-y-1">
+                <div className="flex items-center gap-2 text-sm font-semibold text-amber-900 dark:text-amber-100">
+                  <Info className="h-4 w-4" />
+                  <span>
+                    {t(
+                      "ui.dev.clients.general.scopes.offline_access_title",
+                      "Refresh token 사용 시 offline_access scope가 필요합니다.",
+                    )}
+                  </span>
+                </div>
+                <p className="text-xs leading-relaxed text-amber-950/80 dark:text-amber-50/80">
+                  {t(
+                    "msg.dev.clients.general.scopes.offline_access_summary",
+                    "RP가 refresh token을 사용하려면 scope 목록에 offline_access를 포함하고, consent와 grant type 설정도 함께 맞아야 합니다.",
+                  )}
+                </p>
+              </div>
+              <Button
+                type="button"
+                variant="ghost"
+                size="sm"
+                className="h-8 shrink-0 gap-1 text-amber-900 hover:bg-amber-500/10 hover:text-amber-950 dark:text-amber-100 dark:hover:bg-amber-500/20 dark:hover:text-amber-50"
+                onClick={() => setIsOfflineAccessGuideOpen((prev) => !prev)}
+                aria-expanded={isOfflineAccessGuideOpen}
+                aria-label={t(
+                  "ui.dev.clients.general.scopes.offline_access_toggle",
+                  "offline_access 상세 안내 보기",
+                )}
+              >
+                {isOfflineAccessGuideOpen ? (
+                  <X className="h-3.5 w-3.5" />
+                ) : (
+                  <Info className="h-3.5 w-3.5" />
+                )}
+                {t("ui.common.info", "상세 안내")}
+              </Button>
+            </div>
+            {isOfflineAccessGuideOpen ? (
+              <div className="mt-3 rounded-lg border border-amber-500/20 bg-background/70 p-3 text-xs leading-relaxed text-foreground shadow-sm">
+                <p className="font-semibold">
+                  {t(
+                    "msg.dev.clients.general.scopes.offline_access_conditions_title",
+                    "Hydra 기준으로 refresh token 발급 조건",
+                  )}
+                </p>
+                <ul className="mt-2 list-disc space-y-1 pl-4">
+                  <li>
+                    {t(
+                      "msg.dev.clients.general.scopes.offline_access_condition_request",
+                      "authorization request scope에 offline 또는 offline_access 포함",
+                    )}
+                  </li>
+                  <li>
+                    {t(
+                      "msg.dev.clients.general.scopes.offline_access_condition_consent",
+                      "consent accept의 granted_scope에 offline 또는 offline_access 포함",
+                    )}
+                  </li>
+                  <li>
+                    {t(
+                      "msg.dev.clients.general.scopes.offline_access_condition_grant_type",
+                      "client grant_types에 refresh_token 포함",
+                    )}
+                  </li>
+                </ul>
+              </div>
+            ) : null}
+          </div>
+
           {isScopePickerOpen && (
             <div className="space-y-3 rounded-md border border-border bg-muted/10 p-4">
               <div className="flex items-center justify-between gap-3">
diff --git a/devfront/src/locales/en.toml b/devfront/src/locales/en.toml
index 4f2b0c60..8636a13d 100644
--- a/devfront/src/locales/en.toml
+++ b/devfront/src/locales/en.toml
@@ -452,6 +452,11 @@ session_required_off = "Off: process logout using sub even if sid is missing."
 empty = "No scopes registered."
 subtitle = "Define the permission scopes this application can request."
 tenant = "Tenant access claim"
+offline_access_summary = "If the RP needs refresh tokens, include offline_access in the scope list and align the consent and grant type settings as well."
+offline_access_conditions_title = "Hydra conditions for issuing refresh tokens"
+offline_access_condition_request = "Include offline or offline_access in the authorization request scope."
+offline_access_condition_consent = "Include offline or offline_access in the consent accept granted_scope."
+offline_access_condition_grant_type = "Include refresh_token in the client grant_types."
 
 [msg.dev.clients.general.id_token_claims]
 subtitle = "Manage RP-specific extension claims separately."
@@ -1590,6 +1595,8 @@ add = "Scope Add"
 description_placeholder = "Description Placeholder"
 name_placeholder = "e.g. profile"
 title = "Scopes"
+offline_access_title = "offline_access scope is required when using refresh tokens."
+offline_access_toggle = "Show offline_access help"
 
 [ui.dev.clients.general.scopes.table]
 description = "Scope Description"
diff --git a/devfront/src/locales/ko.toml b/devfront/src/locales/ko.toml
index bc5638ca..0b65dd9f 100644
--- a/devfront/src/locales/ko.toml
+++ b/devfront/src/locales/ko.toml
@@ -452,6 +452,11 @@ session_required_off = "끄면: sid가 없어도 sub만으로 로그아웃 처
 empty = "등록된 스코프가 없습니다."
 subtitle = "이 앱이 요청할 수 있는 권한 범위를 정의합니다."
 tenant = "소속 테넌트 정보 접근"
+offline_access_summary = "RP가 refresh token을 사용하려면 scope 목록에 offline_access를 포함하고, consent와 grant type 설정도 함께 맞아야 합니다."
+offline_access_conditions_title = "Hydra 기준으로 refresh token 발급 조건"
+offline_access_condition_request = "authorization request scope에 offline 또는 offline_access 포함"
+offline_access_condition_consent = "consent accept의 granted_scope에 offline 또는 offline_access 포함"
+offline_access_condition_grant_type = "client grant_types에 refresh_token 포함"
 
 [msg.dev.clients.general.id_token_claims]
 subtitle = "RP 전용 확장 claim을 구분해서 관리합니다."
@@ -1589,6 +1594,8 @@ add = "스코프 추가"
 description_placeholder = "권한에 대한 설명"
 name_placeholder = "e.g. profile"
 title = "스코프"
+offline_access_title = "Refresh token 사용 시 offline_access scope가 필요합니다."
+offline_access_toggle = "offline_access 상세 안내 보기"
 
 [ui.dev.clients.general.scopes.table]
 description = "설명"
diff --git a/devfront/src/locales/template.toml b/devfront/src/locales/template.toml
index bb8af261..1a84e467 100644
--- a/devfront/src/locales/template.toml
+++ b/devfront/src/locales/template.toml
@@ -499,6 +499,11 @@ session_required_off = ""
 empty = ""
 subtitle = ""
 tenant = ""
+offline_access_summary = ""
+offline_access_conditions_title = ""
+offline_access_condition_request = ""
+offline_access_condition_consent = ""
+offline_access_condition_grant_type = ""
 
 [msg.dev.clients.general.security]
 private_help = ""
@@ -1638,6 +1643,8 @@ add = ""
 description_placeholder = ""
 name_placeholder = ""
 title = ""
+offline_access_title = ""
+offline_access_toggle = ""
 
 [ui.dev.clients.general.scopes.table]
 description = ""