diff --git a/src/renderer/inbox/components/Banner.tsx b/src/renderer/inbox/components/Banner.tsx
new file mode 100644
index 0000000..a63e592
--- /dev/null
+++ b/src/renderer/inbox/components/Banner.tsx
@@ -0,0 +1,27 @@
+import React from 'react';
+
+/**
+ * v0.2.6 #24+#41 — 4 banner 의 inline style 중복 제거. severity 별 theme map.
+ */
+const THEMES = {
+  warning: { bg: '#fff7e6', border: '#d99500', text: '#946100' },
+  error: { bg: '#fce4e4', border: '#a33', text: '#a33' },
+  info: { bg: '#e8f0fe', border: '#4a7ec0', text: '#234' }
+} as const;
+
+interface Props {
+  severity: 'warning' | 'error' | 'info';
+  children: React.ReactNode;
+}
+
+export function Banner({ severity, children }: Props): React.ReactElement {
+  const t = THEMES[severity];
+  return (
+    <div style={{
+      background: t.bg, border: `1px solid ${t.border}`, color: t.text,
+      borderRadius: 6, padding: '8px 12px', margin: '8px 0', fontSize: 13
+    }}>
+      {children}
+    </div>
+  );
+}
diff --git a/src/renderer/inbox/components/ExpiryBanner.tsx b/src/renderer/inbox/components/ExpiryBanner.tsx
index bed77be..a08bcf9 100644
--- a/src/renderer/inbox/components/ExpiryBanner.tsx
+++ b/src/renderer/inbox/components/ExpiryBanner.tsx
@@ -1,6 +1,7 @@
 import React, { useEffect, useState } from 'react';
 import type { Note } from '@shared/types';
 import { useInbox } from '../store.js';
+import { Banner } from './Banner.js';
 
 export function ExpiryBanner(): React.ReactElement | null {
   const candidates = useInbox((s) => s.expiredCandidates);
@@ -72,10 +73,7 @@ function ExpiryBannerInner({ candidates, onTrash, onSnooze }: InnerProps): React
   }
 
   return (
-    <div style={{
-      background: '#fff7e6', border: '1px solid #d99500', borderRadius: 6,
-      padding: '8px 12px', margin: '8px 0', fontSize: 13
-    }}>
+    <Banner severity="warning">
       <div style={{ display: 'flex', alignItems: 'center', gap: 8 }}>
         <span>⏰ <b>오늘 기준 만료 {candidates.length}개</b></span>
         <button
@@ -152,6 +150,6 @@ function ExpiryBannerInner({ candidates, onTrash, onSnooze }: InnerProps): React
           </button>
         </>
       )}
-    </div>
+    </Banner>
   );
 }
diff --git a/src/renderer/inbox/components/FailedBanner.tsx b/src/renderer/inbox/components/FailedBanner.tsx
index 254c3ad..a41ccc2 100644
--- a/src/renderer/inbox/components/FailedBanner.tsx
+++ b/src/renderer/inbox/components/FailedBanner.tsx
@@ -1,32 +1,31 @@
 import React from 'react';
 import { useInbox } from '../store.js';
+import { Banner } from './Banner.js';
 
 export function FailedBanner(): React.ReactElement | null {
   const count = useInbox((s) => s.failedCount);
   const retryAllFailed = useInbox((s) => s.retryAllFailed);
   if (count === 0) return null;
   return (
-    <div style={{
-      background: '#fce4e4', border: '1px solid #a33', borderRadius: 6,
-      padding: '8px 12px', margin: '8px 0', fontSize: 13,
-      display: 'flex', alignItems: 'center', gap: 8
-    }}>
-      <span style={{ flex: 1 }}>❌ AI 처리 실패 <b>{count}</b>건</span>
-      <button
-        onClick={() => {
-          retryAllFailed().catch((e) => {
-            // eslint-disable-next-line no-console
-            console.warn('retryAllFailed failed', e);
-          });
-        }}
-        style={{
-          background: '#a33', color: '#fff',
-          border: 'none', borderRadius: 4,
-          padding: '4px 12px', fontSize: 12, cursor: 'pointer'
-        }}
-      >
-        재시도
-      </button>
-    </div>
+    <Banner severity="error">
+      <div style={{ display: 'flex', alignItems: 'center', gap: 8 }}>
+        <span style={{ flex: 1 }}>❌ AI 처리 실패 <b>{count}</b>건</span>
+        <button
+          onClick={() => {
+            retryAllFailed().catch((e) => {
+              // eslint-disable-next-line no-console
+              console.warn('retryAllFailed failed', e);
+            });
+          }}
+          style={{
+            background: '#a33', color: '#fff',
+            border: 'none', borderRadius: 4,
+            padding: '4px 12px', fontSize: 12, cursor: 'pointer'
+          }}
+        >
+          재시도
+        </button>
+      </div>
+    </Banner>
   );
 }
diff --git a/src/renderer/inbox/components/OllamaBanner.tsx b/src/renderer/inbox/components/OllamaBanner.tsx
index 2de6fa8..0ad9120 100644
--- a/src/renderer/inbox/components/OllamaBanner.tsx
+++ b/src/renderer/inbox/components/OllamaBanner.tsx
@@ -1,5 +1,6 @@
 import React from 'react';
 import { useInbox } from '../store.js';
+import { Banner } from './Banner.js';
 
 interface OllamaBannerProps {
   onOpenSettings?: () => void;
@@ -14,7 +15,8 @@ export function OllamaBanner({ onOpenSettings }: OllamaBannerProps = {}): React.
     ? '`ollama pull gemma4:e4b` 실행 후 앱을 재시작해주세요.'
     : 'Inkling 정리가 잠시 멈췄습니다. Ollama를 실행해주세요.';
   return (
-    <div className="banner warn" style={{ flexDirection: 'column', alignItems: 'flex-start' }}>
+    <Banner severity="warning">
+      <div style={{ display: 'flex', flexDirection: 'column', alignItems: 'flex-start' }}>
       <div style={{ display: 'flex', alignItems: 'center', gap: 8, width: '100%' }}>
         <span style={{ flex: 1 }}>⚠ {message}</span>
         <button
@@ -51,6 +53,7 @@ export function OllamaBanner({ onOpenSettings }: OllamaBannerProps = {}): React.
           진단: {status.reason}
         </span>
       ) : null}
-    </div>
+      </div>
+    </Banner>
   );
 }
diff --git a/src/renderer/inbox/components/RecallBanner.tsx b/src/renderer/inbox/components/RecallBanner.tsx
index c0436d8..e770169 100644
--- a/src/renderer/inbox/components/RecallBanner.tsx
+++ b/src/renderer/inbox/components/RecallBanner.tsx
@@ -1,6 +1,7 @@
 import React, { useEffect, useRef, useState } from 'react';
 import { useInbox } from '../store.js';
 import { inboxApi } from '../api.js';
+import { Banner } from './Banner.js';
 
 export function RecallBanner(): React.ReactElement | null {
   const candidate = useInbox((s) => s.recallCandidate);
@@ -47,10 +48,7 @@ export function RecallBanner(): React.ReactElement | null {
   }
 
   return (
-    <div style={{
-      background: '#e8f0fe', border: '1px solid #4a7ec0', borderRadius: 6,
-      padding: '8px 12px', margin: '8px 0', fontSize: 13
-    }}>
+    <Banner severity="info">
       <div style={{ display: 'flex', alignItems: 'center', gap: 8 }}>
         <span>💭 <b>오늘 회상해볼 노트</b></span>
         <span style={{ flex: 1, overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap', color: '#234' }}>
@@ -90,7 +88,7 @@ export function RecallBanner(): React.ReactElement | null {
           더 이상
         </button>
       </div>
-    </div>
+    </Banner>
   );
 }