diff --git a/src/web/components/MobileCard.tsx b/src/web/components/MobileCard.tsx
new file mode 100644
index 0000000..108f977
--- /dev/null
+++ b/src/web/components/MobileCard.tsx
@@ -0,0 +1,33 @@
+import React from 'react';
+
+type MobileCardProps = {
+  title: React.ReactNode;
+  actions?: React.ReactNode;
+  children: React.ReactNode;
+};
+
+type MobileFieldProps = {
+  label: React.ReactNode;
+  value: React.ReactNode;
+};
+
+export function MobileCard({ title, actions, children }: MobileCardProps) {
+  return (
+    <div className="mobile-card">
+      <div className="mobile-card-header">
+        <div className="mobile-card-title">{title}</div>
+        {actions ? <div className="mobile-card-actions">{actions}</div> : null}
+      </div>
+      <div className="mobile-card-body">{children}</div>
+    </div>
+  );
+}
+
+export function MobileField({ label, value }: MobileFieldProps) {
+  return (
+    <div className="mobile-field">
+      <div className="mobile-field-label">{label}</div>
+      <div className="mobile-field-value">{value}</div>
+    </div>
+  );
+}
diff --git a/src/web/components/mobile-card.test.tsx b/src/web/components/mobile-card.test.tsx
new file mode 100644
index 0000000..45a3d84
--- /dev/null
+++ b/src/web/components/mobile-card.test.tsx
@@ -0,0 +1,22 @@
+import { describe, expect, it } from 'vitest';
+import { create } from 'react-test-renderer';
+import { MobileCard, MobileField } from './MobileCard.js';
+
+describe('MobileCard', () => {
+  it('renders title and fields', () => {
+    const root = create(
+      <MobileCard title="CardTitle">
+        <MobileField label="Status" value="OK" />
+      </MobileCard>,
+    );
+
+    const text = root.root.findAll(() => true)
+      .flatMap((instance) => instance.children)
+      .filter((child): child is string => typeof child === 'string')
+      .join('');
+
+    expect(text).toContain('CardTitle');
+    expect(text).toContain('Status');
+    expect(text).toContain('OK');
+  });
+});
diff --git a/src/web/index.css b/src/web/index.css
index a616567..6238769 100644
--- a/src/web/index.css
+++ b/src/web/index.css
@@ -964,6 +964,65 @@ body {
   transform: translateY(-2px);
 }
 
+/* ===== Mobile Card ===== */
+.mobile-card-list {
+  display: flex;
+  flex-direction: column;
+  gap: 12px;
+}
+
+.mobile-card {
+  background: var(--color-bg-card);
+  border-radius: var(--radius-md);
+  border: 1px solid var(--color-border-light);
+  box-shadow: var(--shadow-card);
+  padding: 14px;
+}
+
+.mobile-card-header {
+  display: flex;
+  align-items: flex-start;
+  justify-content: space-between;
+  gap: 8px;
+  margin-bottom: 10px;
+}
+
+.mobile-card-title {
+  font-size: 14px;
+  font-weight: 600;
+  color: var(--color-text-primary);
+}
+
+.mobile-card-actions {
+  display: flex;
+  gap: 6px;
+}
+
+.mobile-card-body {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+}
+
+.mobile-field {
+  display: flex;
+  align-items: baseline;
+  justify-content: space-between;
+  gap: 12px;
+}
+
+.mobile-field-label {
+  font-size: 11px;
+  color: var(--color-text-muted);
+}
+
+.mobile-field-value {
+  font-size: 12px;
+  font-weight: 500;
+  color: var(--color-text-primary);
+  text-align: right;
+}
+
 /* ===== Stat Card (New API style) ===== */
 .stat-card {
   background: var(--color-bg-card);