diff --git a/TASKS.md b/TASKS.md
index 349401b..b8385f2 100644
--- a/TASKS.md
+++ b/TASKS.md
@@ -49,8 +49,9 @@ Verification:
 Progress:
 - done:
   - `API Keys` page now has a mobile card layout instead of relying only on desktop table presentation
+  - `Secrets` page now has a mobile card layout instead of relying only on desktop table presentation
 - pending:
-  - mobile card layouts for `Secrets` and `Usage`
+  - mobile card layout for `Usage`
   - remaining `Agents` and `Settings` commercial UX polish
 
 ## Planned
diff --git a/apps/ui/html/secrets.html b/apps/ui/html/secrets.html
index b8a71ba..defbeb3 100644
--- a/apps/ui/html/secrets.html
+++ b/apps/ui/html/secrets.html
@@ -39,6 +39,11 @@
     color: var(--text-primary);
     font-weight: 600;
   }
+  .secrets-card-list { display: none; }
+  @media (max-width: 720px) {
+    #secrets-table-wrap { display: none; }
+    .secrets-card-list { display: grid; }
+  }
   </style>
   <script src="%CRANK_BUNDLE_PROTECTED_CORE%"></script>
 </head>
@@ -138,6 +143,7 @@
         </div>
       </div>
       <div class="section-card-body" style="padding-top: 0;">
+        <div id="secrets-table-wrap">
         <table class="data-table">
           <thead>
             <tr>
@@ -152,6 +158,8 @@
           </thead>
           <tbody id="secrets-tbody"></tbody>
         </table>
+        </div>
+        <div class="resource-list secrets-card-list" id="secrets-card-list"></div>
       </div>
     </div>
 
diff --git a/apps/ui/js/secrets.js b/apps/ui/js/secrets.js
index 8b89519..2fecacf 100644
--- a/apps/ui/js/secrets.js
+++ b/apps/ui/js/secrets.js
@@ -17,6 +17,7 @@ function initSecretsPage() {
 
   var modal = document.getElementById('secret-modal');
   var tbody = document.getElementById('secrets-tbody');
+  var cardList = document.getElementById('secrets-card-list');
   var profilesList = document.getElementById('auth-profiles-list');
   var summary = document.getElementById('secrets-summary');
   var profilesSummary = document.getElementById('secret-profiles-summary');
@@ -248,6 +249,9 @@ function initSecretsPage() {
     });
 
     window.CrankDom.clear(tbody);
+    if (cardList) {
+      window.CrankDom.clear(cardList);
+    }
 
     if (state.loading && state.secrets.length === 0) {
       var loadingRow = document.createElement('tr');
@@ -257,6 +261,7 @@ function initSecretsPage() {
       loadingCell.textContent = tKey('secrets.loading');
       loadingRow.appendChild(loadingCell);
       tbody.appendChild(loadingRow);
+      renderSecretCards([], tKey('secrets.loading'));
       return;
     }
 
@@ -268,6 +273,7 @@ function initSecretsPage() {
       errorCell.textContent = state.error;
       errorRow.appendChild(errorCell);
       tbody.appendChild(errorRow);
+      renderSecretCards([], state.error);
       return;
     }
 
@@ -279,6 +285,7 @@ function initSecretsPage() {
       emptyCell.textContent = state.secrets.length ? tKey('secrets.empty.search') : tKey('secrets.empty.none');
       emptyRow.appendChild(emptyCell);
       tbody.appendChild(emptyRow);
+      renderSecretCards(rows);
       return;
     }
 
@@ -340,6 +347,106 @@ function initSecretsPage() {
 
       tbody.appendChild(tr);
     });
+
+    renderSecretCards(rows);
+  }
+
+  function renderSecretCards(rows, statusText) {
+    if (!cardList) {
+      return;
+    }
+
+    window.CrankDom.clear(cardList);
+
+    if (statusText && !rows.length) {
+      var messageCard = document.createElement('div');
+      messageCard.className = 'resource-card';
+      var message = document.createElement('div');
+      message.className = 'resource-meta-value';
+      message.textContent = statusText;
+      message.style.color = state.error ? 'var(--danger,#f85149)' : 'var(--text-muted)';
+      messageCard.appendChild(message);
+      cardList.appendChild(messageCard);
+      return;
+    }
+
+    rows.forEach(function(secret) {
+      var references = state.derived.usageBySecret[secret.id] || [];
+      var card = document.createElement('div');
+      card.className = 'resource-card';
+
+      var header = document.createElement('div');
+      header.className = 'resource-card-header';
+      var headerBody = document.createElement('div');
+      var title = document.createElement('div');
+      title.className = 'resource-card-title';
+      title.textContent = secret.name;
+      var subtitle = document.createElement('div');
+      subtitle.className = 'resource-card-subtitle';
+      subtitle.textContent = secretKindLabel(secret.kind);
+      headerBody.appendChild(title);
+      headerBody.appendChild(subtitle);
+
+      var actions = document.createElement('div');
+      actions.className = 'resource-card-actions';
+      var badge = document.createElement('span');
+      badge.className = 'badge ' + (secret.status === 'disabled' ? 'badge-revoked' : 'badge-active');
+      badge.textContent = tKey('secrets.status.' + secret.status);
+      actions.appendChild(badge);
+      header.appendChild(headerBody);
+      header.appendChild(actions);
+      card.appendChild(header);
+
+      var metaGrid = document.createElement('div');
+      metaGrid.className = 'resource-meta-grid';
+      metaGrid.appendChild(buildSecretMetaItem('secrets.th.version', 'v' + secret.current_version));
+      metaGrid.appendChild(buildSecretMetaItem(
+        'secrets.th.last_used',
+        secret.last_used_at ? formatDate(secret.last_used_at) : tKey('secrets.last_used.never')
+      ));
+      metaGrid.appendChild(buildSecretMetaItem(
+        'secrets.th.used_by',
+        window.tPlural('secrets.used_by_count', references.length, { count: references.length })
+      ));
+      card.appendChild(metaGrid);
+
+      var actionRow = document.createElement('div');
+      actionRow.className = 'resource-card-actions';
+      var rotateButton = document.createElement('button');
+      rotateButton.className = 'btn-secondary';
+      rotateButton.type = 'button';
+      rotateButton.textContent = tKey('secrets.action.rotate');
+      rotateButton.addEventListener('click', function() {
+        openModal('rotate', secret);
+      });
+      actionRow.appendChild(rotateButton);
+
+      var deleteButton = document.createElement('button');
+      deleteButton.className = 'btn-secondary';
+      deleteButton.type = 'button';
+      deleteButton.textContent = tKey('secrets.action.delete');
+      deleteButton.addEventListener('click', async function() {
+        await deleteSecret(secret);
+      });
+      actionRow.appendChild(deleteButton);
+      card.appendChild(actionRow);
+
+      cardList.appendChild(card);
+    });
+  }
+
+  function buildSecretMetaItem(labelKey, valueText) {
+    var item = document.createElement('div');
+    item.className = 'resource-meta-item';
+    var label = document.createElement('div');
+    label.className = 'resource-meta-label';
+    label.textContent = tKey(labelKey);
+    var value = document.createElement('div');
+    value.className = 'resource-meta-value';
+    value.textContent = valueText;
+    item.appendChild(label);
+    item.appendChild(value);
+    return item;
   }
 
   function renderProfiles() {