diff --git a/frontend/public/screenshots/manager_01_login.png b/frontend/public/screenshots/manager_01_login.png
new file mode 100644
index 0000000..0ad676f
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diff --git a/frontend/public/screenshots/manager_02_dashboard.png b/frontend/public/screenshots/manager_02_dashboard.png
new file mode 100644
index 0000000..a7b6318
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diff --git a/frontend/src/components/layout/Header.jsx b/frontend/src/components/layout/Header.jsx
index be2b45c..6d1250a 100644
--- a/frontend/src/components/layout/Header.jsx
+++ b/frontend/src/components/layout/Header.jsx
@@ -105,8 +105,8 @@ export default function Header() {
         <div className="header-inner container">
           {/* 로고 */}
           <Link to="/" className="logo" aria-label="(주)지오정보기술 홈으로">
-            <img src="/zioinfo-logo.png" alt="(주)지오정보기술 로고" height="40"
-                 onError={e => { e.target.src='/ziologo.png'; e.target.onerror = () => { e.target.style.display='none'; e.target.nextSibling.style.display='flex'; }; }} />
+            <img src="/zioinfo-logo-dark.png" alt="(주)지오정보기술 로고" height="40"
+                 onError={e => { e.target.src='/zioinfo-logo.png'; e.target.onerror = () => { e.target.style.display='none'; e.target.nextSibling.style.display='flex'; }; }} />
             <span className="logo-text" style={{display:'none'}}>
               <strong>Zio</strong>Info
             </span>