diff --git a/flutter_monisuo/lib/ui/components/material_input.dart b/flutter_monisuo/lib/ui/components/material_input.dart
index 30c1f67..73bbbc8 100644
--- a/flutter_monisuo/lib/ui/components/material_input.dart
+++ b/flutter_monisuo/lib/ui/components/material_input.dart
@@ -80,10 +80,11 @@ class MaterialInput extends StatelessWidget {
       onTap: onTap,
       onFieldSubmitted: onSubmitted,
       inputFormatters: inputFormatters,
-      style: AppTextStyles.headlineMedium(context).copyWith(
+      style: AppTextStyles.bodyLarge(context).copyWith(
         color: enabled 
             ? colorScheme.onSurface 
             : colorScheme.onSurface.withValues(alpha: 0.5),
+        fontSize: 16, // 统一字体大小
       ),
       cursorColor: primaryColor,
       cursorWidth: 2.0,
@@ -123,25 +124,24 @@ class MaterialInput extends StatelessWidget {
         // 后置图标
         suffixIcon: suffixIcon,
         
-        // 填充颜色
-        filled: true,
-        fillColor: fillColor,
+        // 填充颜色（移除，不需要）
+        filled: false,
         
-        // 内容内边距
+        // 内容内边距（统一使用 16px）
         contentPadding: const EdgeInsets.symmetric(
-          horizontal: AppSpacing.lg,
-          vertical: AppSpacing.md,
+          horizontal: 16,
+          vertical: 16,
         ),
         
-        // Material Design 3 边框样式
-        border: _buildBorder(borderColor, AppRadius.lg),
-        enabledBorder: _buildBorder(borderColor, AppRadius.lg),
-        focusedBorder: _buildBorder(primaryColor, AppRadius.lg, width: 2.0),
-        errorBorder: _buildBorder(colorScheme.error, AppRadius.lg),
-        focusedErrorBorder: _buildBorder(colorScheme.error, AppRadius.lg, width: 2.0),
+        // Material Design 3 边框样式（统一 12px 圆角）
+        border: _buildBorder(borderColor, 12),
+        enabledBorder: _buildBorder(borderColor, 12),
+        focusedBorder: _buildBorder(primaryColor, 12, width: 2.0),
+        errorBorder: _buildBorder(colorScheme.error, 12),
+        focusedErrorBorder: _buildBorder(colorScheme.error, 12, width: 2.0),
         disabledBorder: _buildBorder(
           borderColor.withValues(alpha: 0.3),
-          AppRadius.lg,
+          12,
         ),
         
         // 错误文本样式