fix: 优化登录页标题与验证码布局

src/design-system/xinyuan-portable.css

@@ -3667,6 +3667,8 @@ body {
 }
 
 body .login-page {
+  --rc-login-brand-logo-size: 2.25rem;
+  --rc-login-control-height: 4rem;
   --rc-login-field-filled-background: #fbf1f1;
   --rc-login-field-filled-background-hover: #faeaea;
   --rc-login-field-autofill-background: #fbf1f1;
@@ -3674,6 +3676,19 @@ body .login-page {
   --rc-login-field-focus-ring: rgb(158 27 27 / 16%);
 }
 
+body .login-brand img {
+  width: var(--rc-login-brand-logo-size) !important;
+  height: var(--rc-login-brand-logo-size) !important;
+}
+
+body .login-card [data-slot='card-header'] {
+  display: none !important;
+}
+
+body .login-card [data-slot='card-content'] {
+  padding-top: 1.75rem !important;
+}
+
 body
   .login-form
   .login-field[data-has-value='true']
@@ -3911,6 +3926,27 @@ body
     color 9999s ease-out;
 }
 
+body .login-captcha-row {
+  align-items: stretch;
+}
+
+body
+  .login-captcha-row
+  :is(.login-field, .login-input, .input, [data-slot='input']) {
+  height: var(--rc-login-control-height) !important;
+  min-height: var(--rc-login-control-height) !important;
+}
+
+body .login-captcha-button {
+  height: var(--rc-login-control-height) !important;
+  min-height: var(--rc-login-control-height) !important;
+  border-radius: var(--field-radius, calc(var(--radius) * 1.5)) !important;
+}
+
+body .login-captcha-button :is(.captcha-image, .captcha-image svg) {
+  max-height: calc(var(--rc-login-control-height) - 1rem) !important;
+}
+
 .dark .login-page,
 body .dark .login-page,
 body.dark .login-page,

src/pages/Login.jsx

@@ -86,9 +86,6 @@ export default function LoginPage() {
         </div>
 
         <Card className="login-card">
-          <Card.Header>
-            <Card.Title>登录</Card.Title>
-          </Card.Header>
           <Card.Content>
             <form className="login-form" onSubmit={handleSubmit}>
               <TextField
@@ -131,9 +128,9 @@ export default function LoginPage() {
                 />
               </TextField>
 
-              <div className="grid gap-2">
+              <div className="login-captcha-field grid gap-2">
                 <Label>验证码</Label>
-                <div className="flex gap-3">
+                <div className="login-captcha-row flex gap-3">
                   <TextField
                     className="login-field min-w-0 flex-1"
                     data-has-value={captchaCode ? 'true' : undefined}
@@ -157,7 +154,7 @@ export default function LoginPage() {
                       setError('');
                       refreshCaptcha();
                     }}
-                    className="h-12 w-28 shrink-0 overflow-hidden rounded-lg px-2 sm:w-[9.25rem] [&_.captcha-image_svg]:h-auto [&_.captcha-image_svg]:max-w-full"
+                    className="login-captcha-button w-28 shrink-0 overflow-hidden px-2 sm:w-[9.25rem] [&_.captcha-image_svg]:h-auto [&_.captcha-image_svg]:max-w-full"
                   >
                     {captchaData?.image ? (
                       <span