diff --git a/backend/static/icons/icon-192.png b/backend/static/icons/icon-192.png
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Binary files /dev/null and b/backend/static/icons/icon-192.png differ
diff --git a/backend/static/icons/icon-512.png b/backend/static/icons/icon-512.png
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index 0000000..3b0c530
Binary files /dev/null and b/backend/static/icons/icon-512.png differ
diff --git a/backend/static/manifest.json b/backend/static/manifest.json
new file mode 100644
index 0000000..c75994d
--- /dev/null
+++ b/backend/static/manifest.json
@@ -0,0 +1,25 @@
+{
+  "name": "청춘약국 마일리지",
+  "short_name": "청춘약국",
+  "description": "청춘약국 QR 마일리지 적립 서비스",
+  "start_url": "/my-page",
+  "display": "standalone",
+  "background_color": "#f5f7fa",
+  "theme_color": "#6366f1",
+  "orientation": "portrait",
+  "lang": "ko",
+  "icons": [
+    {
+      "src": "/static/icons/icon-192.png",
+      "sizes": "192x192",
+      "type": "image/png",
+      "purpose": "any maskable"
+    },
+    {
+      "src": "/static/icons/icon-512.png",
+      "sizes": "512x512",
+      "type": "image/png",
+      "purpose": "any maskable"
+    }
+  ]
+}
diff --git a/backend/static/sw.js b/backend/static/sw.js
new file mode 100644
index 0000000..ceff4cc
--- /dev/null
+++ b/backend/static/sw.js
@@ -0,0 +1,63 @@
+const CACHE_NAME = 'chungchun-pharmacy-v1';
+const STATIC_ASSETS = [
+  '/static/js/lottie.min.js',
+  '/static/animations/ai-loading.json',
+  '/static/icons/icon-192.png',
+  '/static/icons/icon-512.png'
+];
+
+// Install: pre-cache static assets
+self.addEventListener('install', (event) => {
+  event.waitUntil(
+    caches.open(CACHE_NAME).then((cache) => cache.addAll(STATIC_ASSETS))
+  );
+  self.skipWaiting();
+});
+
+// Activate: clean old caches
+self.addEventListener('activate', (event) => {
+  event.waitUntil(
+    caches.keys().then((keys) =>
+      Promise.all(
+        keys.filter((key) => key !== CACHE_NAME).map((key) => caches.delete(key))
+      )
+    )
+  );
+  self.clients.claim();
+});
+
+// Fetch: cache-first for static, network-only for dynamic
+self.addEventListener('fetch', (event) => {
+  const url = new URL(event.request.url);
+
+  // Skip non-GET requests
+  if (event.request.method !== 'GET') return;
+
+  // Skip dynamic routes entirely
+  if (url.pathname.startsWith('/api/') ||
+      url.pathname.startsWith('/admin') ||
+      url.pathname.startsWith('/claim') ||
+      url.pathname.startsWith('/my-page') ||
+      url.pathname === '/privacy' ||
+      url.pathname === '/logout' ||
+      url.pathname === '/') {
+    return;
+  }
+
+  // Cache-first for static assets and fonts
+  if (url.pathname.startsWith('/static/') ||
+      url.hostname === 'fonts.googleapis.com' ||
+      url.hostname === 'fonts.gstatic.com') {
+    event.respondWith(
+      caches.match(event.request).then((cached) => {
+        return cached || fetch(event.request).then((response) => {
+          if (response.ok) {
+            const clone = response.clone();
+            caches.open(CACHE_NAME).then((cache) => cache.put(event.request, clone));
+          }
+          return response;
+        });
+      })
+    );
+  }
+});