diff --git a/apps/miniprogram/__tests__/helpers/mock-api.ts b/apps/miniprogram/__tests__/helpers/mock-api.ts
index d2c40fa..f0e00c0 100644
--- a/apps/miniprogram/__tests__/helpers/mock-api.ts
+++ b/apps/miniprogram/__tests__/helpers/mock-api.ts
@@ -11,6 +11,9 @@ vi.mock('@/services/request', () => ({
   clearRequestCache: vi.fn(),
   markLoggingOut: vi.fn(),
   clearLoggingOut: vi.fn(),
+  getCachedPatientId: vi.fn(() => ''),
+  setCachedPatientId: vi.fn(),
+  resetForTesting: vi.fn(),
 }));
 
 /** 创建一个成功的 API 响应 */
diff --git a/apps/miniprogram/__tests__/services/request.test.ts b/apps/miniprogram/__tests__/services/request.test.ts
index 38d17d1..fca70ed 100644
--- a/apps/miniprogram/__tests__/services/request.test.ts
+++ b/apps/miniprogram/__tests__/services/request.test.ts
@@ -23,7 +23,7 @@ vi.mock('@/utils/secure-storage', () => ({
 }));
 
 import Taro from '@tarojs/taro';
-import { api, clearRequestCache, resetForTesting } from '@/services/request';
+import { api, clearRequestCache, resetForTesting, setCachedPatientId } from '@/services/request';
 
 describe('request module', () => {
   beforeEach(() => {
@@ -148,4 +148,61 @@ describe('request module', () => {
       await expect(api.get('/bad-params')).rejects.toThrow('参数错误');
     });
   });
+
+  describe('ResponseCache', () => {
+    it('should cache GET responses and return cached on second call', async () => {
+      vi.mocked(Taro.request).mockResolvedValue({ statusCode: 200, data: { success: true, data: { id: '1' } } } as any);
+
+      await api.get('/cached-test');
+      await api.get('/cached-test');
+
+      expect(Taro.request).toHaveBeenCalledTimes(1);
+    });
+
+    it('should not cache POST requests', async () => {
+      vi.mocked(Taro.request).mockResolvedValue({ statusCode: 200, data: { success: true, data: {} } } as any);
+
+      await api.post('/no-cache', { a: 1 });
+      await api.post('/no-cache', { a: 1 });
+
+      expect(Taro.request).toHaveBeenCalledTimes(2);
+    });
+
+    it('clearRequestCache should clear cached entries', async () => {
+      vi.mocked(Taro.request).mockResolvedValue({ statusCode: 200, data: { success: true, data: { v: 1 } } } as any);
+
+      await api.get('/clear-test');
+      clearRequestCache();
+      await api.get('/clear-test');
+
+      expect(Taro.request).toHaveBeenCalledTimes(2);
+    });
+  });
+
+  describe('setCachedPatientId', () => {
+    it('should isolate cache entries by patient ID', async () => {
+      vi.mocked(Taro.request).mockResolvedValue({ statusCode: 200, data: { success: true, data: { v: 1 } } } as any);
+      setCachedPatientId('patient-A');
+      await api.get('/health/data');
+
+      setCachedPatientId('patient-B');
+      await api.get('/health/data');
+
+      // 不同 patient ID 应各自发请求（缓存隔离）
+      expect(Taro.request).toHaveBeenCalledTimes(2);
+    });
+  });
+
+  describe('requestUnlimited', () => {
+    it('should bypass concurrency limiter', async () => {
+      vi.mocked(Taro.request).mockResolvedValue({ statusCode: 200, data: { success: true, data: 'ok' } } as any);
+
+      const { requestUnlimited } = await import('@/services/request');
+      await requestUnlimited('GET', '/health/test');
+
+      expect(Taro.request).toHaveBeenCalledWith(
+        expect.objectContaining({ method: 'GET' }),
+      );
+    });
+  });
 });
diff --git a/apps/miniprogram/__tests__/utils/secure-storage.test.ts b/apps/miniprogram/__tests__/utils/secure-storage.test.ts
new file mode 100644
index 0000000..a5e8a12
--- /dev/null
+++ b/apps/miniprogram/__tests__/utils/secure-storage.test.ts
@@ -0,0 +1,252 @@
+/**
+ * secure-storage AES-256-GCM 测试
+ * 覆盖：加解密对称性、空值删除、明文兼容、迁移、Base64 边界
+ */
+import { vi, describe, it, expect, beforeEach } from 'vitest';
+
+// --- crypto.getRandomValues polyfill ---
+if (!globalThis.crypto?.getRandomValues) {
+  globalThis.crypto = {
+    getRandomValues: (arr: any) => {
+      for (let i = 0; i < arr.length; i++) arr[i] = (Math.random() * 256) | 0;
+      return arr;
+    },
+  } as any;
+}
+
+// --- Mock @tarojs/taro (覆盖 setup.ts 中的默认 mock，添加 base64 方法) ---
+const storage = new Map<string, string>();
+
+vi.mock('@tarojs/taro', () => ({
+  default: {
+    getStorageSync: vi.fn((key: string) => storage.get(key) ?? ''),
+    setStorageSync: vi.fn((key: string, value: string) => { storage.set(key, value); }),
+    removeStorageSync: vi.fn((key: string) => { storage.delete(key); }),
+    arrayBufferToBase64: vi.fn((buf: ArrayBuffer) => {
+      const bytes = new Uint8Array(buf);
+      let binary = '';
+      for (let i = 0; i < bytes.length; i++) binary += String.fromCharCode(bytes[i]);
+      return btoa(binary);
+    }),
+    base64ToArrayBuffer: vi.fn((b64: string) => {
+      const binary = atob(b64);
+      const bytes = new Uint8Array(binary.length);
+      for (let i = 0; i < binary.length; i++) bytes[i] = binary.charCodeAt(i);
+      return bytes.buffer;
+    }),
+  },
+}));
+
+// --- Mock 加密密钥 ---
+process.env.TARO_APP_ENCRYPTION_KEY =
+  '0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef';
+
+// --- 导入被测模块（在 mock 之后） ---
+import { secureSet, secureGet, secureRemove, migrateLegacyStorage } from '@/utils/secure-storage';
+
+// --- 辅助：直接访问 mock 函数 ---
+import Taro from '@tarojs/taro';
+
+const mockGet = Taro.getStorageSync as ReturnType<typeof vi.fn>;
+const mockSet = Taro.setStorageSync as ReturnType<typeof vi.fn>;
+const mockRemove = Taro.removeStorageSync as ReturnType<typeof vi.fn>;
+
+describe('secure-storage AES-256-GCM', () => {
+  beforeEach(() => {
+    storage.clear();
+    vi.clearAllMocks();
+  });
+
+  // ================================================================
+  // 1. AES 加解密对称性
+  // ================================================================
+  describe('AES 加解密对称性', () => {
+    const cases: Array<[string, string]> = [
+      ['英文', 'hello world'],
+      ['中文', '你好世界'],
+      ['emoji', '\u{1F600}\u{1F680}\u{1F4A9}'],
+      ['特殊字符', '<script>alert("xss")</script>&"\''],
+      ['JSON', '{"name":"张三","age":30,"nested":{"key":"val"}}'],
+      ['超长字符串', 'A'.repeat(10000)],
+      ['混合内容', 'Hello 你好 \u{1F600} !@#$%^&*()'],
+      ['空格和换行', '  line1\nline2\ttabbed  '],
+      ['Unicode 补充', '\u{1F1E8}\u{1F1F3}\u{1F1FA}\u{1F1F8}'],
+    ];
+
+    cases.forEach(([label, value]) => {
+      it(`roundtrip: ${label}`, () => {
+        secureSet('test_key', value);
+        const result = secureGet('test_key');
+        expect(result).toBe(value);
+      });
+    });
+
+    it('多次写入同一 key 产生不同密文（nonce 随机）', () => {
+      secureSet('dup', 'same-value');
+      const first = storage.get('_es_dup')!;
+      secureSet('dup', 'same-value');
+      const second = storage.get('_es_dup')!;
+      // 密文应该不同（nonce 不同），但都能解密
+      expect(first).not.toBe(second);
+      expect(secureGet('dup')).toBe('same-value');
+    });
+
+    it('不同 key 互不干扰', () => {
+      secureSet('key_a', 'value_a');
+      secureSet('key_b', 'value_b');
+      expect(secureGet('key_a')).toBe('value_a');
+      expect(secureGet('key_b')).toBe('value_b');
+    });
+  });
+
+  // ================================================================
+  // 2. 空 value 触发 remove
+  // ================================================================
+  describe('空 value 触发 remove', () => {
+    it('空字符串触发 removeStorageSync', () => {
+      secureSet('empty', '');
+      expect(mockRemove).toHaveBeenCalledWith('_es_empty');
+      expect(secureGet('empty')).toBe('');
+    });
+
+    it('先写入再清空应删除存储', () => {
+      secureSet('temp', 'some-data');
+      expect(secureGet('temp')).toBe('some-data');
+      secureSet('temp', '');
+      expect(secureGet('temp')).toBe('');
+    });
+  });
+
+  // ================================================================
+  // 3. 明文 fallback 读取兼容
+  // ================================================================
+  describe('明文 fallback 兼容', () => {
+    it('直接读取无前缀的明文存储', () => {
+      storage.set('access_token', 'plain-token-123');
+      expect(secureGet('access_token')).toBe('plain-token-123');
+    });
+
+    it('加密存储优先于明文存储', () => {
+      storage.set('access_token', 'plain-token');
+      secureSet('access_token', 'encrypted-token');
+      expect(secureGet('access_token')).toBe('encrypted-token');
+    });
+
+    it('存储值非字符串时回退到明文', () => {
+      // getStorageSync mock 返回 ''（默认值），prefixed key 不存在
+      // 明文 key 也返回 ''
+      expect(secureGet('nonexistent')).toBe('');
+    });
+  });
+
+  // ================================================================
+  // 4. migrateLegacyStorage 迁移逻辑
+  // ================================================================
+  describe('migrateLegacyStorage', () => {
+    it('将明文数据迁移到加密存储并删除原始 key', () => {
+      storage.set('access_token', 'legacy-token');
+      storage.set('refresh_token', 'legacy-refresh');
+      storage.set('user_data', '{"id":"123"}');
+
+      migrateLegacyStorage();
+
+      // 明文 key 应被删除
+      expect(storage.has('access_token')).toBe(false);
+      expect(storage.has('refresh_token')).toBe(false);
+      expect(storage.has('user_data')).toBe(false);
+
+      // 加密 key 存在且可解密
+      expect(secureGet('access_token')).toBe('legacy-token');
+      expect(secureGet('refresh_token')).toBe('legacy-refresh');
+      expect(secureGet('user_data')).toBe('{"id":"123"}');
+    });
+
+    it('已加密的 key 不重复迁移', () => {
+      secureSet('access_token', 'already-encrypted');
+      const spy = vi.spyOn(storage, 'set');
+
+      migrateLegacyStorage();
+
+      // 不应产生新的 set 调用（除了可能内部的 secureSet 已有的）
+      // 关键：值不变
+      expect(secureGet('access_token')).toBe('already-encrypted');
+    });
+
+    it('非字符串的明文数据不迁移', () => {
+      // 我们的 mock getStorageSync 对不存在的 key 返回 ''
+      // 模拟: 存一个空字符串的明文值（不迁移）
+      storage.set('tenant_id', '');
+      migrateLegacyStorage();
+      // 空字符串不被视为有效数据，不做迁移
+      expect(storage.has('_es_tenant_id')).toBe(false);
+    });
+
+    it('MIGRATION_KEYS 中未列出的 key 不受影响', () => {
+      storage.set('custom_key', 'custom-value');
+      migrateLegacyStorage();
+      expect(storage.get('custom_key')).toBe('custom-value');
+      expect(storage.has('_es_custom_key')).toBe(false);
+    });
+
+    it('prefixed key 存在但非 aes: 前缀时重新加密为 AES', () => {
+      // 直接放一个非 aes: 前缀的值到 prefixed key
+      // migrateLegacyStorage 发现 prefixed key 存在且不以 aes: 开头，
+      // 会调用 secureGet → 明文 fallback 返回该值，然后 secureSet 重新加密
+      storage.set('_es_access_token', 'legacy-ciphertext-or-plain');
+
+      migrateLegacyStorage();
+
+      // 应被重新加密为 AES 格式
+      const stored = storage.get('_es_access_token')!;
+      expect(stored.startsWith('aes:')).toBe(true);
+    });
+  });
+
+  // ================================================================
+  // 5. secureRemove
+  // ================================================================
+  describe('secureRemove', () => {
+    it('删除加密存储', () => {
+      secureSet('remove_test', 'to-be-removed');
+      expect(secureGet('remove_test')).toBe('to-be-removed');
+      secureRemove('remove_test');
+      expect(secureGet('remove_test')).toBe('');
+    });
+
+    it('删除不存在的 key 不报错', () => {
+      expect(() => secureRemove('nonexistent')).not.toThrow();
+    });
+  });
+
+  // ================================================================
+  // 6. Base64 边界
+  // ================================================================
+  describe('Base64 边界', () => {
+    it('存储值可正确通过 base64 编解码', () => {
+      const value = 'Test with special chars: 
';
+      secureSet('b64_test', value);
+      const result = secureGet('b64_test');
+      expect(result).toBe(value);
+    });
+
+    it('二进制丰富内容加解密', () => {
+      // 构造包含各种 Unicode 范围的字符串
+      const chars = [];
+      for (let i = 0x20; i < 0x7f; i++) chars.push(String.fromCharCode(i));
+      // CJK 基本区
+      for (let i = 0x4e00; i < 0x4e10; i++) chars.push(String.fromCharCode(i));
+      // emoji
+      chars.push('\u{1F600}', '\u{1F680}', '\u{1F970}');
+      const value = chars.join('');
+
+      secureSet('b64_binary', value);
+      expect(secureGet('b64_binary')).toBe(value);
+    });
+
+    it('损坏的 AES 密文返回 null 后走明文 fallback', () => {
+      storage.set('_es_corrupt', 'aes:INVALID_BASE64!!!');
+      // aesDecrypt 失败返回 null，然后尝试 XOR 也失败，最后返回原始字符串
+      expect(secureGet('corrupt')).toBe('aes:INVALID_BASE64!!!');
+    });
+  });
+});
diff --git a/apps/miniprogram/src/components/EmptyState/index.tsx b/apps/miniprogram/src/components/EmptyState/index.tsx
index fc31406..6c4ad1b 100644
--- a/apps/miniprogram/src/components/EmptyState/index.tsx
+++ b/apps/miniprogram/src/components/EmptyState/index.tsx
@@ -19,7 +19,7 @@ export default React.memo(function EmptyState({
 }: EmptyStateProps) {
   const displayChar = icon || text.charAt(0);
   return (
-    <View className='empty-state'>
+    <View className='empty-state' role="status" aria-live="polite">
       <View className='empty-state-icon-wrap'>
         <Text className='empty-state-icon-char'>{displayChar}</Text>
       </View>
diff --git a/apps/miniprogram/src/components/ErrorState/index.tsx b/apps/miniprogram/src/components/ErrorState/index.tsx
index 796e12e..3710d86 100644
--- a/apps/miniprogram/src/components/ErrorState/index.tsx
+++ b/apps/miniprogram/src/components/ErrorState/index.tsx
@@ -12,7 +12,7 @@ export default React.memo(function ErrorState({
   onRetry,
 }: ErrorStateProps) {
   return (
-    <View className='error-state'>
+    <View className='error-state' role="alert" aria-live="assertive">
       <Text className='error-state-icon'>⚠️</Text>
       <Text className='error-state-text'>{text}</Text>
       {onRetry && (
diff --git a/apps/miniprogram/src/components/Loading/index.tsx b/apps/miniprogram/src/components/Loading/index.tsx
index 95f1dc7..f1cfe39 100644
--- a/apps/miniprogram/src/components/Loading/index.tsx
+++ b/apps/miniprogram/src/components/Loading/index.tsx
@@ -9,7 +9,7 @@ interface LoadingProps {
 export default React.memo(function Loading({ text = '加载中...' }: LoadingProps) {
   const isListEnd = text !== '加载中...' && !text.includes('加载');
   return (
-    <View className={`loading-state ${isListEnd ? 'loading-state--end' : ''}`}>
+    <View className={`loading-state ${isListEnd ? 'loading-state--end' : ''}`} role="status" aria-live="polite" aria-label="加载中">
       {!isListEnd && <View className='loading-spinner' />}
       <Text className='loading-state-text'>{text}</Text>
     </View>
diff --git a/apps/miniprogram/src/components/SegmentTabs/index.scss b/apps/miniprogram/src/components/SegmentTabs/index.scss
index 43cd8cb..b8089d5 100644
--- a/apps/miniprogram/src/components/SegmentTabs/index.scss
+++ b/apps/miniprogram/src/components/SegmentTabs/index.scss
@@ -15,6 +15,8 @@
       justify-content: center;
       position: relative;
 
+      @include focus-ring;
+
       &--active {
         .seg-tab__text {
           color: var(--tk-pri);
@@ -54,6 +56,8 @@
       justify-content: center;
       transition: all 0.2s;
 
+      @include focus-ring;
+
       &--active {
         background: var(--tk-pri);
         box-shadow: var(--tk-shadow-tab);
diff --git a/apps/miniprogram/src/components/SegmentTabs/index.tsx b/apps/miniprogram/src/components/SegmentTabs/index.tsx
index 14a0406..b281294 100644
--- a/apps/miniprogram/src/components/SegmentTabs/index.tsx
+++ b/apps/miniprogram/src/components/SegmentTabs/index.tsx
@@ -21,11 +21,13 @@ export default React.memo(function SegmentTabs({
   variant = 'underline',
 }: SegmentTabsProps) {
   return (
-    <View className={`seg-tabs seg-tabs--${variant}`}>
+    <View className={`seg-tabs seg-tabs--${variant}`} role="tablist">
       {tabs.map((tab) => (
         <View
           key={tab.key}
           className={`seg-tab ${activeKey === tab.key ? 'seg-tab--active' : ''}`}
+          role="tab"
+          aria-selected={activeKey === tab.key}
           onClick={() => onChange(tab.key)}
         >
           <Text className='seg-tab__text'>{tab.label}</Text>
diff --git a/apps/miniprogram/src/components/TrendChart/index.tsx b/apps/miniprogram/src/components/TrendChart/index.tsx
index 1389122..3e4435a 100644
--- a/apps/miniprogram/src/components/TrendChart/index.tsx
+++ b/apps/miniprogram/src/components/TrendChart/index.tsx
@@ -210,6 +210,8 @@ export default React.memo(function TrendChart({
       {tooltip && (
         <View
           className='trend-tooltip'
+          role="tooltip"
+          aria-live="polite"
           style={{ left: `${tooltip.x}px`, top: '8px' }}
         >
           <Text className='trend-tooltip-text'>
diff --git a/apps/miniprogram/src/components/ui/DoctorTabBar/index.scss b/apps/miniprogram/src/components/ui/DoctorTabBar/index.scss
index dd15f7a..32bdf14 100644
--- a/apps/miniprogram/src/components/ui/DoctorTabBar/index.scss
+++ b/apps/miniprogram/src/components/ui/DoctorTabBar/index.scss
@@ -25,6 +25,8 @@
     cursor: pointer;
     -webkit-tap-highlight-color: transparent;
 
+    @include focus-ring;
+
     &--active {
       .doctor-tabbar__icon {
         transform: scale(1.15);
diff --git a/apps/miniprogram/src/components/ui/DoctorTabBar/index.tsx b/apps/miniprogram/src/components/ui/DoctorTabBar/index.tsx
index b416557..d0103e9 100644
--- a/apps/miniprogram/src/components/ui/DoctorTabBar/index.tsx
+++ b/apps/miniprogram/src/components/ui/DoctorTabBar/index.tsx
@@ -31,11 +31,13 @@ export default function DoctorTabBar({ active }: DoctorTabBarProps) {
   };
 
   return (
-    <View className="doctor-tabbar">
+    <View className="doctor-tabbar" role="tablist">
       {DOCTOR_TABS.map((tab) => (
         <View
           key={tab.key}
           className={`doctor-tabbar__item ${tab.key === activeKey ? 'doctor-tabbar__item--active' : ''}`}
+          role="tab"
+          aria-selected={tab.key === activeKey}
           onClick={() => handleTab(tab)}
         >
           <Text className="doctor-tabbar__icon">{tab.key === activeKey ? tab.activeIcon : tab.icon}</Text>
diff --git a/apps/miniprogram/src/components/ui/FormInput/index.scss b/apps/miniprogram/src/components/ui/FormInput/index.scss
index f08e4a7..efa3a26 100644
--- a/apps/miniprogram/src/components/ui/FormInput/index.scss
+++ b/apps/miniprogram/src/components/ui/FormInput/index.scss
@@ -17,6 +17,12 @@
     display: flex;
     align-items: center;
     transition: border-color 0.2s;
+
+    &:focus-within {
+      outline: $focus-ring-width solid $focus-ring-color;
+      outline-offset: $focus-ring-offset;
+      border-color: var(--tk-pri);
+    }
   }
 
   &__control {
diff --git a/apps/miniprogram/src/components/ui/FormInput/index.tsx b/apps/miniprogram/src/components/ui/FormInput/index.tsx
index b4c337a..02e3886 100644
--- a/apps/miniprogram/src/components/ui/FormInput/index.tsx
+++ b/apps/miniprogram/src/components/ui/FormInput/index.tsx
@@ -45,6 +45,8 @@ const FormInput: React.FC<FormInputProps> = ({
           type={type}
           maxlength={maxLength}
           disabled={disabled}
+          aria-invalid={!!error}
+          aria-label={label || placeholder}
         />
       </View>
       {error && <Text className='form-input__error'>{error}</Text>}
diff --git a/apps/miniprogram/src/components/ui/LoadingCard/index.tsx b/apps/miniprogram/src/components/ui/LoadingCard/index.tsx
index 44225ce..762e7e4 100644
--- a/apps/miniprogram/src/components/ui/LoadingCard/index.tsx
+++ b/apps/miniprogram/src/components/ui/LoadingCard/index.tsx
@@ -12,7 +12,7 @@ const LoadingCard: React.FC<LoadingCardProps> = ({
   layout = 'card',
 }) => {
   return (
-    <View className={`loading-card-group loading-card-group--${layout}`}>
+    <View className={`loading-card-group loading-card-group--${layout}`} role="status" aria-label="内容加载中">
       {Array.from({ length: count }, (_, i) => (
         <View key={i} className="loading-card">
           {layout === 'card' && (
diff --git a/apps/miniprogram/src/components/ui/PrimaryButton/index.scss b/apps/miniprogram/src/components/ui/PrimaryButton/index.scss
index 66d9933..8914d83 100644
--- a/apps/miniprogram/src/components/ui/PrimaryButton/index.scss
+++ b/apps/miniprogram/src/components/ui/PrimaryButton/index.scss
@@ -29,6 +29,8 @@
     transform: scale(0.98);
   }
 
+  @include focus-ring;
+
   &--disabled {
     opacity: 0.5;
     box-shadow: none;
diff --git a/apps/miniprogram/src/components/ui/PrimaryButton/index.tsx b/apps/miniprogram/src/components/ui/PrimaryButton/index.tsx
index 8ba21a9..b61f141 100644
--- a/apps/miniprogram/src/components/ui/PrimaryButton/index.tsx
+++ b/apps/miniprogram/src/components/ui/PrimaryButton/index.tsx
@@ -28,7 +28,7 @@ const PrimaryButton: React.FC<PrimaryButtonProps> = ({
   ].filter(Boolean).join(' ');
 
   return (
-    <View className={cls} onClick={!disabled && !loading ? onClick : undefined}>
+    <View className={cls} role="button" aria-disabled={disabled} aria-busy={loading} onClick={!disabled && !loading ? onClick : undefined}>
       {loading && <View className='primary-btn__spinner' />}
       <Text className='primary-btn__text'>{children}</Text>
     </View>
diff --git a/apps/miniprogram/src/components/ui/SecondaryButton/index.scss b/apps/miniprogram/src/components/ui/SecondaryButton/index.scss
index fd13b6a..446f8c1 100644
--- a/apps/miniprogram/src/components/ui/SecondaryButton/index.scss
+++ b/apps/miniprogram/src/components/ui/SecondaryButton/index.scss
@@ -18,6 +18,8 @@
     transform: scale(0.98);
   }
 
+  @include focus-ring;
+
   &--disabled {
     opacity: 0.5;
   }
diff --git a/apps/miniprogram/src/components/ui/SecondaryButton/index.tsx b/apps/miniprogram/src/components/ui/SecondaryButton/index.tsx
index 14d6ede..d586807 100644
--- a/apps/miniprogram/src/components/ui/SecondaryButton/index.tsx
+++ b/apps/miniprogram/src/components/ui/SecondaryButton/index.tsx
@@ -22,7 +22,7 @@ const SecondaryButton: React.FC<SecondaryButtonProps> = ({
   ].filter(Boolean).join(' ');
 
   return (
-    <View className={cls} onClick={!disabled ? onClick : undefined}>
+    <View className={cls} role="button" aria-disabled={disabled} onClick={!disabled ? onClick : undefined}>
       <Text className='secondary-btn__text'>{children}</Text>
     </View>
   );
diff --git a/apps/miniprogram/src/styles/_focus-ring.scss b/apps/miniprogram/src/styles/_focus-ring.scss
new file mode 100644
index 0000000..b4cb182
--- /dev/null
+++ b/apps/miniprogram/src/styles/_focus-ring.scss
@@ -0,0 +1,15 @@
+// Focus ring mixin for keyboard accessibility
+$focus-ring-color: #1890ff;
+$focus-ring-width: 2px;
+$focus-ring-offset: 2px;
+
+@mixin focus-ring {
+  &:focus {
+    outline: none;
+    box-shadow: 0 0 0 $focus-ring-offset $focus-ring-color;
+  }
+  &:focus-visible {
+    outline: $focus-ring-width solid $focus-ring-color;
+    outline-offset: $focus-ring-offset;
+  }
+}
diff --git a/apps/miniprogram/src/styles/variables.scss b/apps/miniprogram/src/styles/variables.scss
index b797fba..4976a43 100644
--- a/apps/miniprogram/src/styles/variables.scss
+++ b/apps/miniprogram/src/styles/variables.scss
@@ -68,3 +68,6 @@ $shadow-btn: 0 4px 16px rgba(196, 98, 58, 0.3);    // 主按钮阴影
 $shadow-tab: 0 2px 8px rgba(196, 98, 58, 0.25);     // 选中Tab阴影
 $shadow-btn-doc: 0 4px 16px rgba(58, 107, 140, 0.3); // 医生端按钮阴影
 $shadow-tab-doc: 0 2px 8px rgba(58, 107, 140, 0.25); // 医生端Tab阴影
+
+// ─── 焦点环（无障碍）───
+@import 'focus-ring';