diff --git a/apps/taro/src/pages/student/login/index.tsx b/apps/taro/src/pages/student/login/index.tsx
index 9fe29190..e1d57f29 100644
--- a/apps/taro/src/pages/student/login/index.tsx
+++ b/apps/taro/src/pages/student/login/index.tsx
@@ -19,6 +19,10 @@ export default function StudentLoginPage() {
   const [reason, setReason] = useState('');
   const [sending, setSending] = useState(false);
   const [verifying, setVerifying] = useState(false);
+  const phoneValue = phone.trim();
+  const codeValue = code.trim();
+  const canSendCode = runtimeReady && /^1\d{10}$/.test(phoneValue) && !sending;
+  const canSubmit = runtimeReady && /^1\d{10}$/.test(phoneValue) && /^\d{4,8}$/.test(codeValue || debugCode) && !verifying;
 
   useEffect(() => {
     ensureRuntimeConfigLoaded()
@@ -71,13 +75,19 @@ export default function StudentLoginPage() {
       };
 
   async function handleSendCode() {
+    if (!/^1\d{10}$/.test(phoneValue)) {
+      setError('请输入 11 位手机号');
+      return;
+    }
     setSending(true);
     setError('');
     setMessage('');
     try {
-      const result = await sendSmsCode(phone);
+      await ensureTenantResolved();
+      const result = await sendSmsCode(phoneValue);
       const nextCode = typeof result.debugCode === 'string' ? result.debugCode : '';
       setDebugCode(nextCode);
+      setCode('');
       setMessage(nextCode ? `验证码已发送，开发环境验证码 ${nextCode}` : '验证码已发送');
     } catch (nextError) {
       setError(nextError instanceof Error ? nextError.message : '验证码发送失败');
@@ -87,10 +97,18 @@ export default function StudentLoginPage() {
   }
 
   async function handleLogin() {
+    if (!/^1\d{10}$/.test(phoneValue)) {
+      setError('请输入 11 位手机号');
+      return;
+    }
+    if (!/^\d{4,8}$/.test(codeValue || debugCode)) {
+      setError('请输入短信验证码');
+      return;
+    }
     setVerifying(true);
     setError('');
     try {
-      await verifySmsCode(phone, code || debugCode);
+      await verifySmsCode(phoneValue, codeValue || debugCode);
       redirectAfterLogin(params.redirect || landingPath());
     } catch (nextError) {
       setError(nextError instanceof Error ? nextError.message : '登录失败');
@@ -116,21 +134,25 @@ export default function StudentLoginPage() {
         {reason ? <Text className='error-text'>{reason}</Text> : null}
         <View className='login-field'>
           <Text className='login-field-label'>手机号</Text>
-          <Input className='login-input' type='number' maxlength={11} placeholder='请输入手机号' value={phone} onInput={event => setPhone(String(event.detail.value || ''))} />
+          <View className='login-input-shell'>
+            <Input className='login-input-native' type='number' maxlength={11} placeholder='请输入手机号' value={phone} onInput={event => setPhone(String(event.detail.value || ''))} />
+          </View>
         </View>
         <View className='login-field'>
           <Text className='login-field-label'>验证码</Text>
           <View className='login-code-row'>
-            <Input className='login-input login-code-input' type='number' maxlength={6} placeholder='请输入短信验证码' value={code} onInput={event => setCode(String(event.detail.value || ''))} />
-            <Button className='login-send-button secondary-button' loading={sending} onClick={handleSendCode}>
-            发送
+            <View className='login-input-shell login-code-shell'>
+              <Input className='login-input-native' type='number' maxlength={6} placeholder='请输入验证码' value={code} onInput={event => setCode(String(event.detail.value || ''))} />
+            </View>
+            <Button className='login-send-button secondary-button' disabled={!canSendCode} loading={sending} onClick={handleSendCode}>
+              {message ? '重发' : '发送'}
             </Button>
           </View>
+          <Text className={`login-field-help ${message ? 'success' : ''}`}>{message || '收到短信后在这里填写验证码'}</Text>
         </View>
-        <Button className='primary-button' loading={verifying} onClick={handleLogin}>
+        <Button className='primary-button' disabled={!canSubmit} loading={verifying} onClick={handleLogin}>
           登录
         </Button>
-        {message ? <Text className='success-text'>{message}</Text> : null}
         {error ? <Text className='error-text'>{error}</Text> : null}
       </View>
     </View>
diff --git a/apps/taro/src/pages/student/student.css b/apps/taro/src/pages/student/student.css
index b66b60d7..0cf9660e 100644
--- a/apps/taro/src/pages/student/student.css
+++ b/apps/taro/src/pages/student/student.css
@@ -116,7 +116,8 @@
   font-weight: 850;
 }
 
-.login-input {
+.login-input,
+.login-input-shell {
   box-sizing: border-box;
   display: block;
   width: 100%;
@@ -131,6 +132,27 @@
   line-height: 54px;
 }
 
+.login-input-shell {
+  display: flex;
+  align-items: center;
+  padding: 0;
+  overflow: hidden;
+}
+
+.login-input-native {
+  display: block;
+  width: 100%;
+  height: 52px;
+  min-height: 52px;
+  padding: 0 16px;
+  border: 0;
+  outline: 0;
+  background: transparent;
+  color: #111827;
+  font-size: 17px;
+  line-height: 52px;
+}
+
 .login-code-row {
   display: grid;
   grid-template-columns: minmax(0, 1fr) 104px;
@@ -143,6 +165,10 @@
   min-width: 0;
 }
 
+.login-code-shell {
+  min-width: 0;
+}
+
 .login-send-button {
   width: 104px;
   min-width: 104px;
@@ -151,7 +177,8 @@
   white-space: nowrap;
 }
 
-.login-card .login-input {
+.login-card .login-input,
+.login-card .login-input-shell {
   display: block;
   width: 100%;
   height: 54px;
@@ -165,7 +192,24 @@
   line-height: 54px;
 }
 
-.login-card .login-code-row .login-code-input {
+.login-card .login-input-shell {
+  display: flex;
+  align-items: center;
+  padding: 0;
+}
+
+.login-card .login-input-native {
+  width: 100%;
+  height: 52px;
+  min-height: 52px;
+  padding: 0 16px;
+  color: #111827;
+  font-size: 16px;
+  line-height: 52px;
+}
+
+.login-card .login-code-row .login-code-input,
+.login-card .login-code-row .login-code-shell {
   width: 100%;
 }
 
@@ -181,6 +225,25 @@
   line-height: 54px;
 }
 
+.login-card .primary-button[disabled],
+.login-card .secondary-button[disabled],
+.login-card .login-send-button[disabled] {
+  opacity: 0.55;
+}
+
+.login-field-help {
+  display: block;
+  min-height: 20px;
+  color: #64748b;
+  font-size: 14px;
+  line-height: 1.45;
+}
+
+.login-field-help.success {
+  color: #0f766e;
+  font-weight: 750;
+}
+
 .login-page-admin {
   background:
     linear-gradient(to right, rgba(15, 23, 42, 0.035) 1px, transparent 1px),