diff --git a/.gitignore b/.gitignore
index b32c1a5..d8fec7c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,4 +5,4 @@ node_modules/
 data/images/*
 !data/images/.gitkeep
 coverage/
-package-lock.json
+package-lock.json
\ No newline at end of file
diff --git a/deploy/nginx.example.conf b/deploy/nginx.example.conf
index 950b596..66a6a82 100644
--- a/deploy/nginx.example.conf
+++ b/deploy/nginx.example.conf
@@ -1,6 +1,8 @@
 server {
     listen 80;
-    server_name recipe.example.com;
+    listen [::]:80;
+
+    server_name recipeatlas.horoli.kr;
 
     location /.well-known/acme-challenge/ {
         root /var/www/certbot;
@@ -12,25 +14,37 @@ server {
 }
 
 server {
-    listen 443 ssl http2;
-    server_name recipe.example.com;
+    listen 443 ssl;
+    listen [::]:443 ssl http2;
 
-    # 실제 인증서 경로로 교체한다. Let's Encrypt/Caddy를 사용해도 된다.
-    ssl_certificate /etc/letsencrypt/live/recipe.example.com/fullchain.pem;
-    ssl_certificate_key /etc/letsencrypt/live/recipe.example.com/privkey.pem;
+    server_name recipeatlas.horoli.kr;
+
+    ssl_certificate /etc/letsencrypt/live/horoli.kr/fullchain.pem;
+    ssl_certificate_key /etc/letsencrypt/live/horoli.kr/privkey.pem;
+    include /etc/letsencrypt/options-ssl-nginx.conf;
+    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;
 
     add_header X-Content-Type-Options nosniff always;
     add_header Referrer-Policy strict-origin-when-cross-origin always;
-    client_max_body_size 2m;
+
+    client_max_body_size 10m;
+
+    access_log /var/log/nginx/recipeatlas.horoli.kr.access.log;
+    error_log /var/log/nginx/recipeatlas.horoli.kr.error.log;
 
     location / {
-        proxy_pass http://127.0.0.1:3000;
+        proxy_pass http://192.168.0.250:1771;
         proxy_http_version 1.1;
+
         proxy_set_header Host $host;
         proxy_set_header X-Real-IP $remote_addr;
         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
         proxy_set_header X-Forwarded-Proto $scheme;
-        proxy_read_timeout 120s;
+        proxy_set_header X-Forwarded-Host $host;
+
+        proxy_redirect off;
+        proxy_connect_timeout 30s;
+        proxy_send_timeout 360s;
+        proxy_read_timeout 360s;
     }
 }
-
diff --git a/public/css/app.css b/public/css/app.css
index 151bcd3..5aab985 100644
--- a/public/css/app.css
+++ b/public/css/app.css
@@ -81,6 +81,7 @@ img { display: block; max-width: 100%; }
 
 .profile { display: flex; align-items: center; gap: 12px; font-size: 0.86rem; }
 .avatar { width: 32px; height: 32px; border-radius: 50%; object-fit: cover; }
+.profile .avatar[hidden] { display: none; }
 .menu-button { display: grid; width: 42px; height: 42px; padding: 10px; place-content: center; gap: 4px; border: 1px solid var(--line); border-radius: 50%; cursor: pointer; background: transparent; }
 .menu-button[hidden] { display: none; }
 .menu-button span { display: block; width: 18px; height: 2px; border-radius: 2px; background: var(--ink); }
@@ -108,7 +109,7 @@ img { display: block; max-width: 100%; }
 .button-quiet { min-height: 38px; padding: 7px 14px; border-color: var(--line); background: transparent; }
 .button-danger { border-color: #a43928; color: #8d3022; background: transparent; }
 .google-login { width: 100%; gap: 12px; }
-.google-login span { display: grid; width: 24px; height: 24px; place-items: center; border-radius: 50%; color: var(--green-dark); background: white; }
+.google-login > span[aria-hidden] { display: grid; width: 24px; height: 24px; place-items: center; border-radius: 50%; color: var(--green-dark); background: white; }
 
 .page-shell { width: min(1240px, calc(100% - 40px)); margin: 0 auto; padding-bottom: 100px; }
 
@@ -239,6 +240,9 @@ img { display: block; max-width: 100%; }
 .login-card .brand-mark { margin: 0 auto 28px; }
 .login-card h1 { margin: 8px 0 16px; font-family: var(--serif); font-size: 3rem; font-weight: 400; line-height: 1; }
 .login-copy { margin: 0 0 32px; color: var(--muted); }
+.login-alert { margin: -12px 0 20px; padding: 14px 16px; border: 1px solid rgba(164, 57, 40, 0.3); border-radius: 14px; color: #7f2e22; background: #fff3ed; text-align: left; }
+.login-alert strong { font-size: 0.9rem; }
+.login-alert p { margin: 5px 0 0; font-size: 0.76rem; line-height: 1.5; }
 .fine-print { margin: 18px 0 0; color: var(--muted); font-size: 0.72rem; }
 
 .detail-shell { width: min(1160px, calc(100% - 40px)); margin: 0 auto; padding: 50px 0 100px; }
@@ -300,11 +304,12 @@ img { display: block; max-width: 100%; }
   .import-form { flex-direction: column; border-radius: 18px; }
   .import-form .button { width: 100%; }
   .recipe-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
-  .recipe-card { border-radius: 14px; }
-  .recipe-card-body { padding: 14px; }
-  .recipe-card-body h3 { display: -webkit-box; overflow: hidden; margin: 10px 0 6px; font-size: 1.15rem; -webkit-box-orient: vertical; -webkit-line-clamp: 3; }
-  .recipe-card-body > p:not(.recipe-card-match) { display: -webkit-box; overflow: hidden; font-size: 0.75rem; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
-  .recipe-card-tags { gap: 4px; margin-top: 10px; }
+  .recipe-card { display: flex; overflow: hidden; flex-direction: column; border-radius: 14px; }
+  .recipe-card-body { display: flex; height: 228px; flex: 0 0 228px; flex-direction: column; overflow: hidden; padding: 14px; }
+  .recipe-card-body h3 { display: -webkit-box; overflow: hidden; min-height: 2.58rem; max-height: 2.58rem; margin: 10px 0 6px; font-size: 1.15rem; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
+  .recipe-card-body > p:not(.recipe-card-match) { display: -webkit-box; overflow: hidden; min-height: 2.18rem; max-height: 2.18rem; font-size: 0.75rem; line-height: 1.45; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
+  .recipe-card-body .recipe-card-match { display: -webkit-box; overflow: hidden; max-height: 2.5rem; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
+  .recipe-card-tags { overflow: hidden; max-height: 3.4rem; gap: 4px; margin-top: auto; padding-top: 10px; }
   .recipe-card-tags .tag { font-size: 0.68rem; }
   .tag-filter-heading { align-items: flex-start; flex-direction: column; }
   .tag-filter-heading small { display: block; margin: 2px 0 0; }
diff --git a/public/index.html b/public/index.html
index 31f276c..36cbbe8 100644
--- a/public/index.html
+++ b/public/index.html
@@ -8,21 +8,7 @@
     <link rel="stylesheet" href="/css/app.css">
   </head>
   <body>
-    <header class="site-header">
-      <a class="brand" href="/" aria-label="Our Recipe Atlas 홈">
-        <span class="brand-mark brand-mark-small" aria-hidden="true">ORA</span>
-        <span>Our Recipe Atlas</span>
-      </a>
-      <div class="profile">
-        <img id="profile-image" class="avatar" alt="" hidden>
-        <span id="profile-name"></span>
-        <button id="access-menu-button" class="menu-button" type="button"
-                aria-label="메뉴 열기" aria-controls="access-drawer"
-                aria-expanded="false">
-          <span></span><span></span><span></span>
-        </button>
-      </div>
-    </header>
+    <header id="site-header" class="site-header"></header>
 
     <main class="page-shell">
       <section class="hero">
@@ -94,32 +80,6 @@
 
     </main>
 
-    <button id="drawer-backdrop" class="drawer-backdrop" type="button"
-            aria-label="메뉴 닫기" hidden></button>
-    <aside id="access-drawer" class="access-drawer" role="dialog" aria-modal="true"
-           aria-labelledby="drawer-title" aria-hidden="true" hidden>
-      <div class="drawer-heading">
-        <div>
-          <p class="section-number">MENU</p>
-          <h2 id="drawer-title">메뉴</h2>
-        </div>
-        <button id="close-access-drawer" class="drawer-close" type="button"
-                aria-label="메뉴 닫기">×</button>
-      </div>
-      <div class="drawer-account">
-        <strong id="drawer-user-name"></strong>
-        <span id="drawer-user-email"></span>
-      </div>
-      <div class="drawer-actions">
-        <button id="open-access-overlay" class="drawer-action" type="button" hidden>
-          <span>로그인 허용 계정 관리</span><small>관리자</small>
-        </button>
-        <button id="drawer-logout" class="drawer-action danger" type="button" data-logout>
-          로그아웃
-        </button>
-      </div>
-    </aside>
-
     <button id="access-overlay-backdrop" class="access-overlay-backdrop" type="button"
             aria-label="로그인 허용 계정 관리 닫기" hidden></button>
     <section id="access-overlay" class="access-overlay" role="dialog" aria-modal="true"
diff --git a/public/js/app-bar.js b/public/js/app-bar.js
new file mode 100644
index 0000000..f6c6802
--- /dev/null
+++ b/public/js/app-bar.js
@@ -0,0 +1,97 @@
+export function mountAppBar({ onManageAccess } = {}) {
+  const header = document.querySelector('#site-header');
+  if (!header) throw new Error('Global app bar mount point is missing.');
+
+  header.innerHTML = `
+    <a class="brand" href="/" aria-label="Our Recipe Atlas 홈">
+      <span class="brand-mark brand-mark-small" aria-hidden="true">ORA</span>
+      <span>Our Recipe Atlas</span>
+    </a>
+    <div class="profile">
+      <img id="profile-image" class="avatar" alt="" hidden>
+      <span id="profile-name"></span>
+      <button id="access-menu-button" class="menu-button" type="button"
+              aria-label="메뉴 열기" aria-controls="access-drawer"
+              aria-expanded="false">
+        <span></span><span></span><span></span>
+      </button>
+    </div>`;
+
+  header.insertAdjacentHTML('afterend', `
+    <button id="drawer-backdrop" class="drawer-backdrop" type="button"
+            aria-label="메뉴 닫기" hidden></button>
+    <aside id="access-drawer" class="access-drawer" role="dialog" aria-modal="true"
+           aria-labelledby="drawer-title" aria-hidden="true" hidden>
+      <div class="drawer-heading">
+        <div>
+          <p class="section-number">MENU</p>
+          <h2 id="drawer-title">메뉴</h2>
+        </div>
+        <button id="close-access-drawer" class="drawer-close" type="button"
+                aria-label="메뉴 닫기">×</button>
+      </div>
+      <div class="drawer-account">
+        <strong id="drawer-user-name"></strong>
+        <span id="drawer-user-email"></span>
+      </div>
+      <div class="drawer-actions">
+        <button id="open-access-overlay" class="drawer-action" type="button" hidden>
+          <span>로그인 허용 계정 관리</span><small>관리자</small>
+        </button>
+        <button id="drawer-logout" class="drawer-action danger" type="button" data-logout>
+          로그아웃
+        </button>
+      </div>
+    </aside>`);
+
+  const elements = {
+    menuButton: document.querySelector('#access-menu-button'),
+    profileImage: document.querySelector('#profile-image'),
+    profileName: document.querySelector('#profile-name'),
+    drawer: document.querySelector('#access-drawer'),
+    closeButton: document.querySelector('#close-access-drawer'),
+    backdrop: document.querySelector('#drawer-backdrop'),
+    manageAccessButton: document.querySelector('#open-access-overlay'),
+    drawerUserName: document.querySelector('#drawer-user-name'),
+    drawerUserEmail: document.querySelector('#drawer-user-email'),
+  };
+
+  function setOpen(open) {
+    elements.menuButton.setAttribute('aria-expanded', String(open));
+    elements.drawer.setAttribute('aria-hidden', String(!open));
+    elements.drawer.hidden = !open;
+    elements.backdrop.hidden = !open;
+    document.body.classList.toggle('drawer-open', open);
+    if (open) elements.closeButton.focus();
+    else elements.menuButton.focus();
+  }
+
+  elements.menuButton.addEventListener('click', () => setOpen(true));
+  elements.closeButton.addEventListener('click', () => setOpen(false));
+  elements.backdrop.addEventListener('click', () => setOpen(false));
+  elements.manageAccessButton.addEventListener('click', () => {
+    setOpen(false);
+    if (onManageAccess) onManageAccess();
+    else window.location.assign('/?manage-access=1');
+  });
+  document.addEventListener('keydown', (event) => {
+    if (event.key === 'Escape' && !elements.drawer.hidden) setOpen(false);
+  });
+
+  return {
+    focusMenuButton() {
+      elements.menuButton.focus();
+    },
+    setUser(user) {
+      elements.profileName.textContent = user.name || user.email;
+      if (user.picture) {
+        elements.profileImage.src = user.picture;
+        elements.profileImage.alt = `${user.name || user.email} 프로필`;
+        elements.profileImage.hidden = false;
+      }
+      elements.drawerUserName.textContent = user.name || user.email;
+      elements.drawerUserEmail.textContent = user.email;
+      elements.manageAccessButton.hidden = !user.canManageAccess;
+    },
+  };
+}
diff --git a/public/js/app.js b/public/js/app.js
index 153ee8b..72b92e3 100644
--- a/public/js/app.js
+++ b/public/js/app.js
@@ -1,8 +1,11 @@
 import { apiRequest } from './api.js';
+import { mountAppBar } from './app-bar.js';
 import { bindLogout, loadSession } from './auth.js';
 import { searchRecipes } from './recipe-search.js';
 import { bindScrollToTop } from './scroll-to-top.js';
 
+const appBar = mountAppBar({ onManageAccess: openAccessManager });
+
 const elements = {
   importForm: document.querySelector('#import-form'),
   importStatus: document.querySelector('#import-status'),
@@ -17,13 +20,6 @@ const elements = {
   tagFilterOptions: document.querySelector('#tag-filter-options'),
   toggleTagFilter: document.querySelector('#toggle-tag-filter'),
   clearTagFilter: document.querySelector('#clear-tag-filter'),
-  accessMenuButton: document.querySelector('#access-menu-button'),
-  accessDrawer: document.querySelector('#access-drawer'),
-  closeAccessDrawer: document.querySelector('#close-access-drawer'),
-  drawerBackdrop: document.querySelector('#drawer-backdrop'),
-  drawerUserName: document.querySelector('#drawer-user-name'),
-  drawerUserEmail: document.querySelector('#drawer-user-email'),
-  openAccessOverlay: document.querySelector('#open-access-overlay'),
   accessOverlay: document.querySelector('#access-overlay'),
   closeAccessOverlay: document.querySelector('#close-access-overlay'),
   accessOverlayBackdrop: document.querySelector('#access-overlay-backdrop'),
@@ -199,20 +195,7 @@ async function loadAllowedEmails() {
 }
 
 function updatePageLock() {
-  document.body.classList.toggle(
-    'drawer-open',
-    !elements.accessDrawer.hidden || !elements.accessOverlay.hidden,
-  );
-}
-
-function setAccessDrawerOpen(open) {
-  elements.accessMenuButton.setAttribute('aria-expanded', String(open));
-  elements.accessDrawer.setAttribute('aria-hidden', String(!open));
-  elements.accessDrawer.hidden = !open;
-  elements.drawerBackdrop.hidden = !open;
-  updatePageLock();
-  if (open) elements.closeAccessDrawer.focus();
-  else elements.accessMenuButton.focus();
+  document.body.classList.toggle('drawer-open', !elements.accessOverlay.hidden);
 }
 
 function setAccessOverlayOpen(open) {
@@ -221,7 +204,16 @@ function setAccessOverlayOpen(open) {
   elements.accessOverlayBackdrop.hidden = !open;
   updatePageLock();
   if (open) elements.accessEmail.focus();
-  else elements.accessMenuButton.focus();
+  else appBar.focusMenuButton();
+}
+
+async function openAccessManager() {
+  setAccessOverlayOpen(true);
+  try {
+    await loadAllowedEmails();
+  } catch (error) {
+    showToast(error.message);
+  }
 }
 
 function ingredientGroupTemplate(group, groupIndex) {
@@ -444,28 +436,11 @@ elements.clearRecipeSearch.addEventListener('click', () => {
   renderRecipes();
 });
 
-elements.accessMenuButton.addEventListener('click', () => {
-  setAccessDrawerOpen(true);
-});
-
-elements.openAccessOverlay.addEventListener('click', async () => {
-  setAccessDrawerOpen(false);
-  setAccessOverlayOpen(true);
-  try {
-    await loadAllowedEmails();
-  } catch (error) {
-    showToast(error.message);
-  }
-});
-
-elements.closeAccessDrawer.addEventListener('click', () => setAccessDrawerOpen(false));
-elements.drawerBackdrop.addEventListener('click', () => setAccessDrawerOpen(false));
 elements.closeAccessOverlay.addEventListener('click', () => setAccessOverlayOpen(false));
 elements.accessOverlayBackdrop.addEventListener('click', () => setAccessOverlayOpen(false));
 document.addEventListener('keydown', (event) => {
   if (event.key !== 'Escape') return;
   if (!elements.accessOverlay.hidden) setAccessOverlayOpen(false);
-  else if (!elements.accessDrawer.hidden) setAccessDrawerOpen(false);
 });
 
 elements.accessForm.addEventListener('submit', async (event) => {
@@ -507,9 +482,11 @@ elements.allowedEmailList.addEventListener('click', async (event) => {
 bindLogout();
 bindScrollToTop(elements.scrollToTop);
 currentUser = await loadSession();
-elements.drawerUserName.textContent = currentUser.name || currentUser.email;
-elements.drawerUserEmail.textContent = currentUser.email;
+appBar.setUser(currentUser);
 await loadRecipes();
-if (currentUser.canManageAccess) {
-  elements.openAccessOverlay.hidden = false;
+if (
+  currentUser.canManageAccess
+  && new URLSearchParams(window.location.search).get('manage-access') === '1'
+) {
+  await openAccessManager();
 }
diff --git a/public/js/login.js b/public/js/login.js
new file mode 100644
index 0000000..92cf713
--- /dev/null
+++ b/public/js/login.js
@@ -0,0 +1,7 @@
+const error = new URLSearchParams(window.location.search).get('error');
+
+if (error === 'account-not-allowed') {
+  document.querySelector('#login-alert').hidden = false;
+  document.querySelector('#google-login').href = '/auth/google/select-account';
+  document.querySelector('#google-login-label').textContent = '다른 Google 계정으로 다시 시도';
+}
diff --git a/public/js/recipe.js b/public/js/recipe.js
index d5cb136..872a5a9 100644
--- a/public/js/recipe.js
+++ b/public/js/recipe.js
@@ -1,7 +1,9 @@
 import { apiRequest } from './api.js';
+import { mountAppBar } from './app-bar.js';
 import { bindLogout, loadSession } from './auth.js';
 import { bindScrollToTop } from './scroll-to-top.js';
 
+const appBar = mountAppBar();
 const detail = document.querySelector('#recipe-detail');
 const toast = document.querySelector('#toast');
 const scrollToTop = document.querySelector('#scroll-to-top');
@@ -221,7 +223,7 @@ function renderRecipe(recipe) {
 }
 
 bindLogout();
-await loadSession();
+appBar.setUser(await loadSession());
 
 try {
   const recipeId = decodeURIComponent(window.location.pathname.split('/').filter(Boolean).pop());
diff --git a/public/login.html b/public/login.html
index 5e7c3af..efd2a1d 100644
--- a/public/login.html
+++ b/public/login.html
@@ -13,12 +13,16 @@
       <p class="eyebrow">PRIVATE RECIPE ARCHIVE</p>
       <h1>Our Recipe Atlas</h1>
       <p class="login-copy">Instagram과 YouTube에서 발견한 레시피를 한곳에 정리하세요.</p>
-      <a class="button button-primary google-login" href="/auth/google">
+      <div id="login-alert" class="login-alert" role="alert" hidden>
+        <strong>이 Google 계정은 사용할 수 없어요.</strong>
+        <p>관리자에게 계정 등록을 요청하거나, 허용된 다른 계정으로 다시 시도해 주세요.</p>
+      </div>
+      <a id="google-login" class="button button-primary google-login" href="/auth/google">
         <span aria-hidden="true">G</span>
-        Google 계정으로 계속하기
+        <span id="google-login-label">Google 계정으로 계속하기</span>
       </a>
       <p class="fine-print">허용 목록에 등록된 Google 계정만 로그인할 수 있습니다.</p>
     </main>
+    <script type="module" src="/js/login.js"></script>
   </body>
 </html>
-
diff --git a/public/recipe.html b/public/recipe.html
index bcc3068..3b4f4a7 100644
--- a/public/recipe.html
+++ b/public/recipe.html
@@ -7,17 +7,7 @@
     <link rel="stylesheet" href="/css/app.css">
   </head>
   <body>
-    <header class="site-header">
-      <a class="brand" href="/">
-        <span class="brand-mark brand-mark-small" aria-hidden="true">ORA</span>
-        <span>Our Recipe Atlas</span>
-      </a>
-      <div class="profile">
-        <img id="profile-image" class="avatar" alt="" hidden>
-        <span id="profile-name"></span>
-        <button id="logout-button" class="button button-quiet" type="button" data-logout>로그아웃</button>
-      </div>
-    </header>
+    <header id="site-header" class="site-header"></header>
     <main id="recipe-detail" class="detail-shell">
       <p class="empty-state">레시피를 불러오는 중입니다.</p>
     </main>
diff --git a/src/plugins/auth.js b/src/plugins/auth.js
index a9e20af..51253db 100644
--- a/src/plugins/auth.js
+++ b/src/plugins/auth.js
@@ -93,6 +93,13 @@ async function authPlugin(fastify, { config, googleClient } = {}) {
         path: '/',
       },
     });
+
+    fastify.get('/auth/google/select-account', async (request, reply) => {
+      const authorizationUri = await fastify.googleOAuth2.generateAuthorizationUri(request, reply);
+      const url = new URL(authorizationUri);
+      url.searchParams.set('prompt', 'select_account');
+      return reply.redirect(url.href);
+    });
   } else {
     fastify.get('/auth/google', async () => {
       throw new AppError('Google OAuth가 설정되지 않았습니다.', {
@@ -133,10 +140,7 @@ async function authPlugin(fastify, { config, googleClient } = {}) {
     }
     const allowedAccount = await fastify.allowedEmailRepository.findByEmail(payload.email);
     if (!allowedAccount) {
-      throw new AppError('허용되지 않은 Google 계정입니다.', {
-        statusCode: 403,
-        code: 'GOOGLE_EMAIL_NOT_ALLOWED',
-      });
+      return reply.redirect('/login?error=account-not-allowed');
     }
 
     const user = await fastify.userRepository.upsertGoogleUser({
diff --git a/tests/app.test.js b/tests/app.test.js
index d185d5b..efc5d0e 100644
--- a/tests/app.test.js
+++ b/tests/app.test.js
@@ -69,18 +69,30 @@ test('관리자는 이메일만으로 Google 로그인 허용 계정을 관리
     url: '/',
     headers: { cookie: adminCookie },
   });
-  assert.match(pageResponse.body, /id="access-menu-button"/);
-  assert.match(pageResponse.body, /id="access-drawer"/);
-  assert.match(pageResponse.body, /id="drawer-logout"/);
+  assert.match(pageResponse.body, /id="site-header"/);
   assert.match(pageResponse.body, /id="access-overlay"/);
   assert.match(pageResponse.body, /id="scroll-to-top"/);
 
+  const appBarResponse = await app.inject({ method: 'GET', url: '/js/app-bar.js' });
+  assert.equal(appBarResponse.statusCode, 200);
+  assert.match(appBarResponse.body, /id="access-menu-button"/);
+  assert.match(appBarResponse.body, /id="access-drawer"/);
+  assert.match(appBarResponse.body, /id="drawer-logout"/);
+
   const memberPageResponse = await app.inject({
     method: 'GET',
     url: '/',
     headers: { cookie: authCookie(app, 'google-user-2') },
   });
-  assert.match(memberPageResponse.body, /aria-label="메뉴 열기"/);
+  assert.match(memberPageResponse.body, /id="site-header"/);
+
+  const detailPageResponse = await app.inject({
+    method: 'GET',
+    url: '/recipe/recipe-1',
+    headers: { cookie: adminCookie },
+  });
+  assert.match(detailPageResponse.body, /id="site-header"/);
+  assert.doesNotMatch(detailPageResponse.body, /id="logout-button"/);
 
   const addResponse = await app.inject({
     method: 'POST',
@@ -152,6 +164,8 @@ test('인증 cookie가 없으면 API를 거부하고 페이지는 로그인으
   const loginResponse = await app.inject({ method: 'GET', url: '/login' });
   assert.equal(loginResponse.statusCode, 200);
   assert.match(loginResponse.body, /Our Recipe Atlas/);
+  assert.match(loginResponse.body, /id="login-alert"/);
+  assert.match(loginResponse.body, /src="\/js\/login.js"/);
 
   const cssResponse = await app.inject({ method: 'GET', url: '/css/app.css' });
   assert.equal(cssResponse.statusCode, 200);
@@ -209,6 +223,47 @@ test('Google 로그인 시작 경로는 PKCE S256 authorization 요청을 만든
   assert.equal(location.hostname, 'accounts.google.com');
   assert.equal(location.searchParams.get('code_challenge_method'), 'S256');
   assert.equal(location.searchParams.get('scope'), 'openid email profile');
+
+  const selectAccountResponse = await app.inject({
+    method: 'GET',
+    url: '/auth/google/select-account',
+  });
+  const selectAccountLocation = new URL(selectAccountResponse.headers.location);
+  assert.equal(selectAccountLocation.searchParams.get('prompt'), 'select_account');
+});
+
+test('허용되지 않은 Google 계정은 안내 UI가 있는 로그인 페이지로 보낸다', async (t) => {
+  const dependencies = createDependencies(new FakeRecipeRepository());
+  dependencies.googleClient = {
+    async verifyIdToken() {
+      return {
+        getPayload: () => ({
+          sub: 'not-allowed-user',
+          email: 'not-allowed@example.com',
+          email_verified: true,
+        }),
+      };
+    },
+  };
+  const app = await buildApp({
+    config: createTestConfig({
+      google: {
+        clientId: 'google-client-id',
+        clientSecret: 'google-client-secret',
+        callbackUrl: 'http://localhost:3000/auth/google/callback',
+        allowedEmails: new Set(['allowed@example.com']),
+      },
+    }),
+    dependencies,
+  });
+  t.after(() => app.close());
+  app.googleOAuth2.getAccessTokenFromAuthorizationCodeFlow = async () => ({
+    token: { id_token: 'test-id-token' },
+  });
+
+  const response = await app.inject({ method: 'GET', url: '/auth/google/callback' });
+  assert.equal(response.statusCode, 302);
+  assert.equal(response.headers.location, '/login?error=account-not-allowed');
 });
 
 test('import preview와 소유자별 Recipe CRUD가 이어진다', async (t) => {