diff --git a/app/static/dbx-logo.png b/app/static/dbx-logo.png
new file mode 100644
index 0000000..e70717a
Binary files /dev/null and b/app/static/dbx-logo.png differ
diff --git a/app/static/styles.css b/app/static/styles.css
index 30d3870..573be34 100644
--- a/app/static/styles.css
+++ b/app/static/styles.css
@@ -87,6 +87,12 @@ a { color: inherit; text-decoration: none; }
 
 .brand-logo-mark svg { color: #fff; }
 
+.brand-logo-img {
+  height: 44px;
+  width: auto;
+  object-fit: contain;
+}
+
 .brand-name {
   font-size: 22px;
   font-weight: 700;
@@ -321,6 +327,13 @@ a { color: inherit; text-decoration: none; }
 
 .header-logo-mark svg { color: #fff; }
 
+.header-logo-img {
+  height: 32px;
+  width: auto;
+  object-fit: contain;
+  flex-shrink: 0;
+}
+
 .header-brand-text {
   display: flex;
   flex-direction: column;
diff --git a/app/templates/denied.html b/app/templates/denied.html
index 5db9994..d91da9b 100644
--- a/app/templates/denied.html
+++ b/app/templates/denied.html
@@ -23,16 +23,7 @@
         </div>
 
         <div class="brand-logo">
-          <div class="brand-logo-mark">
-            <svg width="20" height="20" viewBox="0 0 24 24" fill="none"
-                 stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round">
-              <rect x="3" y="3" width="7" height="7" rx="1"/>
-              <rect x="14" y="3" width="7" height="7" rx="1"/>
-              <rect x="3" y="14" width="7" height="7" rx="1"/>
-              <rect x="14" y="14" width="7" height="7" rx="1"/>
-            </svg>
-          </div>
-          <span class="brand-name">DBX Corporation</span>
+          <img src="/static/dbx-logo.png" alt="DBX Corporation" class="brand-logo-img" />
         </div>
 
         <div class="brand-body">
diff --git a/app/templates/login.html b/app/templates/login.html
index a5865f0..f2f1f63 100644
--- a/app/templates/login.html
+++ b/app/templates/login.html
@@ -23,16 +23,7 @@
         </div>
 
         <div class="brand-logo">
-          <div class="brand-logo-mark">
-            <svg width="20" height="20" viewBox="0 0 24 24" fill="none"
-                 stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round">
-              <rect x="3" y="3" width="7" height="7" rx="1"/>
-              <rect x="14" y="3" width="7" height="7" rx="1"/>
-              <rect x="3" y="14" width="7" height="7" rx="1"/>
-              <rect x="14" y="14" width="7" height="7" rx="1"/>
-            </svg>
-          </div>
-          <span class="brand-name">DBX Corporation</span>
+          <img src="/static/dbx-logo.png" alt="DBX Corporation" class="brand-logo-img" />
         </div>
 
         <div class="brand-body">
diff --git a/app/templates/main.html b/app/templates/main.html
index 18b931a..ec30fb7 100644
--- a/app/templates/main.html
+++ b/app/templates/main.html
@@ -11,19 +11,8 @@
     <!-- ── 헤더 ── -->
     <header class="header">
       <div class="header-brand">
-        <div class="header-logo-mark">
-          <svg width="18" height="18" viewBox="0 0 24 24" fill="none"
-               stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round">
-            <rect x="3" y="3" width="7" height="7" rx="1"/>
-            <rect x="14" y="3" width="7" height="7" rx="1"/>
-            <rect x="3" y="14" width="7" height="7" rx="1"/>
-            <rect x="14" y="14" width="7" height="7" rx="1"/>
-          </svg>
-        </div>
-        <div class="header-brand-text">
-          <span class="header-company">DBX Corporation</span>
-          <span class="header-portal">업무 포털</span>
-        </div>
+        <img src="/static/dbx-logo.png" alt="DBX Corporation" class="header-logo-img" />
+        <span class="header-portal">업무 포털</span>
       </div>
 
       <div class="header-user">