diff --git a/pages/JsonTools/DiffNavigator.tsx b/pages/JsonTools/DiffNavigator.tsx
index 96004c1..45ca5c6 100644
--- a/pages/JsonTools/DiffNavigator.tsx
+++ b/pages/JsonTools/DiffNavigator.tsx
@@ -1,8 +1,5 @@
-import { Box, IconButton, Typography } from '@mui/material';
-import NavigateBeforeIcon from '@mui/icons-material/NavigateBefore';
-import NavigateNextIcon from '@mui/icons-material/NavigateNext';
+import { ChevronLeft, ChevronRight } from 'lucide-react';
 import { useLazyTranslation } from '@/utils/useLazyTranslation';
-import { jsonDiffPageStyles } from '@/config/pageTheme';
 
 interface DiffNavigatorProps {
   total: number;
@@ -17,29 +14,34 @@ export default function DiffNavigator({ total, currentIndex, onPrev, onNext }: D
 
   if (total === 0) {
     return (
-      <Box sx={jsonDiffPageStyles.NAVIGATOR}>
-        <Typography variant="body2" sx={{ fontWeight: 700, color: 'text.secondary' }}>
-          {t('jsonDiff:noDiffs')}
-        </Typography>
-      </Box>
+      <div className="flex items-center justify-center gap-3 p-2.5 rounded-lg bg-blue-50 border border-blue-200">
+        <span className="text-sm font-bold text-gray-500">{t('jsonDiff:noDiffs')}</span>
+      </div>
     );
   }
 
   return (
-    <Box sx={jsonDiffPageStyles.NAVIGATOR}>
-      <IconButton size="small" aria-label={t('jsonDiff:previousDiff')} onClick={onPrev}>
-        <NavigateBeforeIcon />
-      </IconButton>
-      <Typography
-        variant="body2"
-        sx={{ fontWeight: 800, fontFamily: 'monospace', minWidth: 60, textAlign: 'center' }}
+    <div className="flex items-center justify-center gap-3 p-2.5 rounded-lg bg-blue-50 border border-blue-200">
+      <button
+        type="button"
+        aria-label={t('jsonDiff:previousDiff')}
+        onClick={onPrev}
+        className="p-1 rounded-md hover:bg-blue-100 transition-colors"
       >
+        <ChevronLeft className="h-4 w-4" />
+      </button>
+      <span className="text-sm font-extrabold font-mono min-w-[60px] text-center">
         {currentIndex + 1} / {total}
-      </Typography>
-      <IconButton size="small" aria-label={t('jsonDiff:nextDiff')} onClick={onNext}>
-        <NavigateNextIcon />
-      </IconButton>
-    </Box>
+      </span>
+      <button
+        type="button"
+        aria-label={t('jsonDiff:nextDiff')}
+        onClick={onNext}
+        className="p-1 rounded-md hover:bg-blue-100 transition-colors"
+      >
+        <ChevronRight className="h-4 w-4" />
+      </button>
+    </div>
   );
 }
 
diff --git a/pages/JsonTools/DiffResult.tsx b/pages/JsonTools/DiffResult.tsx
index ef043e3..cbde70f 100644
--- a/pages/JsonTools/DiffResult.tsx
+++ b/pages/JsonTools/DiffResult.tsx
@@ -1,7 +1,4 @@
-import { Box, Stack, Typography, useTheme } from '@mui/material';
-import type { Theme } from '@mui/material/styles';
 import { useLazyTranslation } from '@/utils/useLazyTranslation';
-import { jsonDiffPageStyles, surfaceTint } from '@/config/pageTheme';
 import JsonTree from './JsonTree';
 import type { DiffNode, DiffResult as DiffResultType, DiffType, ViewMode } from './types';
 
@@ -16,41 +13,30 @@ export default function DiffResult({ result, viewMode, activePath }: DiffResultP
 
   if (viewMode === 'sideBySide') {
     return (
-      <Stack direction={{ xs: 'column', md: 'row' }} spacing={2} alignItems="stretch">
-        <Box sx={{ flex: 1, minWidth: 0 }}>
+      <div className="flex flex-col md:flex-row gap-4 items-stretch">
+        <div className="flex-1 min-w-0">
           <SectionLabel text={t('jsonDiff:leftLabel')} />
           <JsonTree node={result.root} side="left" activePath={activePath} />
-        </Box>
-        <Box sx={{ flex: 1, minWidth: 0 }}>
+        </div>
+        <div className="flex-1 min-w-0">
           <SectionLabel text={t('jsonDiff:rightLabel')} />
           <JsonTree node={result.root} side="right" activePath={activePath} />
-        </Box>
-      </Stack>
+        </div>
+      </div>
     );
   }
 
   return (
-    <Box sx={jsonDiffPageStyles.TREE_CONTAINER}>
+    <div className="p-3 rounded-lg bg-white border border-gray-200 font-mono text-sm overflow-x-auto min-h-[200px] max-h-[480px] overflow-y-auto">
       <UnifiedView node={result.root} depth={0} activePath={activePath} />
-    </Box>
+    </div>
   );
 }
 
 const SectionLabel = ({ text }: { text: string }) => (
-  <Typography
-    variant="caption"
-    sx={{
-      display: 'block',
-      mb: 0.6,
-      fontWeight: 800,
-      fontSize: '0.7rem',
-      letterSpacing: 0.4,
-      color: 'text.secondary',
-      textTransform: 'uppercase',
-    }}
-  >
+  <span className="block mb-1.5 text-[11px] font-extrabold tracking-wider text-gray-500 uppercase">
     {text}
-  </Typography>
+  </span>
 );
 
 const formatPrimitive = (v: unknown): string => {
@@ -71,17 +57,17 @@ const prefixForType = (type: DiffType): string => {
   return '  ';
 };
 
-const colorForType = (type: DiffType): string | undefined => {
-  if (type === 'added') return jsonDiffPageStyles.addedText;
-  if (type === 'removed') return jsonDiffPageStyles.removedText;
-  if (type === 'modified') return jsonDiffPageStyles.modifiedText;
-  return undefined;
+const colorForType = (type: DiffType): string => {
+  if (type === 'added') return 'text-green-600';
+  if (type === 'removed') return 'text-red-600';
+  if (type === 'modified') return 'text-amber-600';
+  return 'text-gray-900';
 };
 
-const bgForType = (type: DiffType, theme: Theme): string | undefined => {
-  if (type === 'added') return surfaceTint(theme, theme.palette.success.main, 0.15);
-  if (type === 'removed') return surfaceTint(theme, theme.palette.error.main, 0.15);
-  if (type === 'modified') return surfaceTint(theme, theme.palette.warning.main, 0.15);
+const bgForType = (type: DiffType): string | undefined => {
+  if (type === 'added') return 'bg-green-50';
+  if (type === 'removed') return 'bg-red-50';
+  if (type === 'modified') return 'bg-amber-50';
   return undefined;
 };
 
@@ -177,29 +163,18 @@ interface UnifiedRowProps {
 }
 
 const UnifiedRow = ({ depth, type, text, active, multiline }: UnifiedRowProps) => {
-  const theme = useTheme();
   const color = colorForType(type);
-  const bg = bgForType(type, theme);
+  const bg = bgForType(type);
   return (
-    <Box
-      sx={{
-        pl: depth * 1.5,
-        pr: 1,
-        py: 0.2,
-        bgcolor: bg,
-        color: color ?? 'text.primary',
-        outline: active ? '2px solid' : 'none',
-        outlineColor: 'primary.main',
-        borderRadius: 0.5,
-        whiteSpace: multiline ? 'pre' : 'nowrap',
-        fontFamily: 'monospace',
-      }}
+    <div
+      className={`${bg ?? ''} ${color} ${active ? 'ring-2 ring-blue-500 rounded' : ''} ${
+        multiline ? 'whitespace-pre' : 'whitespace-nowrap'
+      } font-mono`}
+      style={{ paddingLeft: `${depth * 1.5}rem`, paddingRight: '0.25rem', paddingBlock: '0.2rem' }}
     >
-      <Box component="span" sx={{ fontWeight: 800 }}>
-        {prefixForType(type)}
-      </Box>
-      <Box component="span">{text}</Box>
-    </Box>
+      <span className="font-extrabold">{prefixForType(type)}</span>
+      <span>{text}</span>
+    </div>
   );
 };
 
diff --git a/pages/JsonTools/JsonConvertSection.tsx b/pages/JsonTools/JsonConvertSection.tsx
index c99beb8..8717cbf 100644
--- a/pages/JsonTools/JsonConvertSection.tsx
+++ b/pages/JsonTools/JsonConvertSection.tsx
@@ -1,5 +1,5 @@
 import { useEffect, useMemo, useState } from 'react';
-import { Box, Button, Stack, Typography } from '@mui/material';
+import { Button } from '@/components/ui/button';
 import { useLazyTranslation } from '@/utils/useLazyTranslation';
 import { formatByteSize } from '@/utils/textStatistics';
 import { useSnackbar } from '@/components/GlobalSnackbar';
@@ -88,29 +88,24 @@ export default function JsonConvertSection({
   };
 
   return (
-    <Stack spacing={2.5}>
+    <div className="flex flex-col gap-6">
       {/* 工具栏 */}
-      <Stack
-        direction={{ xs: 'column', sm: 'row' }}
-        spacing={1.5}
-        justifyContent="space-between"
-        alignItems={{ xs: 'stretch', sm: 'center' }}
-      >
-        <Box />
-        <Stack direction="row" spacing={1}>
-          <Button variant="text" onClick={handleClear} sx={{ borderRadius: 3 }}>
+      <div className="flex flex-col sm:flex-row gap-3 justify-between items-stretch sm:items-center">
+        <div />
+        <div className="flex gap-2">
+          <Button variant="outline" onClick={handleClear} className="rounded-lg">
             {t('jsonFormat:clearButton')}
           </Button>
           <Button
-            variant="contained"
+            variant="default"
             disabled={!canConvert}
             onClick={handleConvert}
-            sx={{ borderRadius: 3, fontWeight: 700, px: 3 }}
+            className="rounded-lg font-bold px-4"
           >
             {t(`jsonFormat:${convertButtonKey}`)}
           </Button>
-        </Stack>
-      </Stack>
+        </div>
+      </div>
 
       {/* 输入区 */}
       <TextInputArea
@@ -125,81 +120,33 @@ export default function JsonConvertSection({
 
       {/* 转换结果 */}
       {result && result.output ? (
-        <Box
-          sx={{
-            position: 'relative',
-            borderRadius: 3,
-            bgcolor: 'background.paper',
-            border: '1px solid',
-            borderColor: 'divider',
-            overflow: 'hidden',
-          }}
-        >
+        <div className="relative rounded-lg bg-white border border-gray-200 overflow-hidden">
           {/* 结果头部 */}
-          <Stack
-            direction="row"
-            justifyContent="space-between"
-            alignItems="center"
-            sx={{
-              px: 2,
-              py: 1,
-              borderBottom: '1px solid',
-              borderColor: 'divider',
-              bgcolor: (theme) =>
-                theme.palette.mode === 'dark' ? 'rgba(255,255,255,0.03)' : 'grey.50',
-            }}
-          >
-            <Stack direction="row" spacing={2} alignItems="center">
-              <Typography
-                variant="caption"
-                sx={{ fontWeight: 800, color: 'text.secondary', fontSize: '0.7rem' }}
-              >
+          <div className="flex justify-between items-center px-4 py-2 border-b border-gray-200 bg-gray-50">
+            <div className="flex gap-4 items-center">
+              <span className="text-[11px] font-extrabold text-gray-500">
                 {t(`jsonFormat:${pk}OutputLabel`)}
-              </Typography>
-              <Typography variant="caption" sx={{ color: 'text.disabled', fontSize: '0.65rem' }}>
+              </span>
+              <span className="text-[10px] text-gray-400">
                 {t('jsonFormat:originalSize')}: {formatByteSize(result.originalBytes)}
-              </Typography>
-              <Typography variant="caption" sx={{ color: 'text.disabled', fontSize: '0.65rem' }}>
+              </span>
+              <span className="text-[10px] text-gray-400">
                 {t('jsonFormat:formattedSize')}: {formatByteSize(result.outputBytes)}
-              </Typography>
-            </Stack>
+              </span>
+            </div>
             <CopyButton text={result.output} showMessage={showMessage} />
-          </Stack>
+          </div>
 
           {/* 转换内容 */}
-          <Box
-            sx={{
-              p: 2,
-              fontFamily: 'monospace',
-              fontSize: '0.8rem',
-              whiteSpace: 'pre-wrap',
-              wordBreak: 'break-all',
-              maxHeight: 400,
-              overflowY: 'auto',
-              lineHeight: 1.6,
-            }}
-          >
+          <div className="p-4 font-mono text-sm whitespace-pre-wrap break-all max-h-[400px] overflow-y-auto leading-relaxed">
             {result.output}
-          </Box>
-        </Box>
+          </div>
+        </div>
       ) : (
-        <Box
-          sx={{
-            p: 3,
-            borderRadius: 3,
-            bgcolor: (theme) =>
-              theme.palette.mode === 'dark' ? 'rgba(255,255,255,0.03)' : 'grey.50',
-            border: '1px dashed',
-            borderColor: (theme) =>
-              theme.palette.mode === 'dark' ? 'rgba(255,255,255,0.15)' : 'grey.300',
-            textAlign: 'center',
-          }}
-        >
-          <Typography variant="body2" color="text.secondary" sx={{ fontWeight: 600 }}>
-            {t(`jsonFormat:${pk}EmptyHint`)}
-          </Typography>
-        </Box>
+        <div className="p-4 rounded-lg bg-gray-50 border border-dashed border-gray-300 text-center">
+          <p className="text-sm font-semibold text-gray-500">{t(`jsonFormat:${pk}EmptyHint`)}</p>
+        </div>
       )}
-    </Stack>
+    </div>
   );
 }
diff --git a/pages/JsonTools/JsonDiffInput.tsx b/pages/JsonTools/JsonDiffInput.tsx
index 5e10150..7ab3541 100644
--- a/pages/JsonTools/JsonDiffInput.tsx
+++ b/pages/JsonTools/JsonDiffInput.tsx
@@ -1,4 +1,3 @@
-import { Box, Typography } from '@mui/material';
 import TextInputArea from '@/components/TextInputArea';
 
 interface JsonDiffInputProps {
@@ -17,21 +16,10 @@ export default function JsonDiffInput({
   error,
 }: JsonDiffInputProps) {
   return (
-    <Box sx={{ flex: 1, minWidth: 0 }}>
-      <Typography
-        variant="caption"
-        sx={{
-          display: 'block',
-          mb: 0.6,
-          fontWeight: 800,
-          fontSize: '0.7rem',
-          letterSpacing: 0.4,
-          color: 'text.secondary',
-          textTransform: 'uppercase',
-        }}
-      >
+    <div className="flex-1 min-w-0">
+      <span className="block mb-1.5 text-[11px] font-extrabold tracking-wider text-gray-500 uppercase">
         {label}
-      </Typography>
+      </span>
       <TextInputArea
         value={value}
         onChange={onChange}
@@ -41,7 +29,7 @@ export default function JsonDiffInput({
         externalError={error ?? undefined}
         showClear={true}
       />
-    </Box>
+    </div>
   );
 }
 
diff --git a/pages/JsonTools/JsonFormatSection.tsx b/pages/JsonTools/JsonFormatSection.tsx
index 966d797..412dbdd 100644
--- a/pages/JsonTools/JsonFormatSection.tsx
+++ b/pages/JsonTools/JsonFormatSection.tsx
@@ -1,14 +1,5 @@
 import { useEffect, useMemo, useState } from 'react';
-import {
-  Box,
-  Button,
-  FormControlLabel,
-  FormHelperText,
-  Stack,
-  Switch,
-  TextField,
-  Typography,
-} from '@mui/material';
+import { Button } from '@/components/ui/button';
 import { useLazyTranslation } from '@/utils/useLazyTranslation';
 import {
   formatJson,
@@ -18,7 +9,6 @@ import {
 } from '@/utils/jsonFormatter';
 import { formatByteSize } from '@/utils/textStatistics';
 import { useSnackbar } from '@/components/GlobalSnackbar';
-import { jsonDiffPageStyles } from '@/config/pageTheme';
 import CopyButton from '@/components/CopyButton';
 import SwitchButtonGroup from '@/components/SwitchButtonGroup';
 
@@ -78,22 +68,14 @@ export default function JsonFormatSection() {
   };
 
   return (
-    <Stack spacing={2.5}>
+    <div className="flex flex-col gap-6">
       {/* 工具栏 */}
-      <Stack
-        direction={{ xs: 'column', sm: 'row' }}
-        spacing={1.5}
-        justifyContent="space-between"
-        alignItems={{ xs: 'stretch', sm: 'center' }}
-      >
-        <Stack direction="row" spacing={1.5} alignItems="center">
+      <div className="flex flex-col sm:flex-row gap-3 justify-between items-stretch sm:items-center">
+        <div className="flex gap-3 items-center">
           {/* 缩进选择 */}
-          <Typography
-            variant="caption"
-            sx={{ fontWeight: 800, color: 'text.secondary', fontSize: '0.7rem' }}
-          >
+          <span className="text-[11px] font-extrabold text-gray-500">
             {t('jsonFormat:indentSize')}
-          </Typography>
+          </span>
           <SwitchButtonGroup
             value={indentSize}
             onChange={(v) => setIndentSize(v)}
@@ -103,134 +85,79 @@ export default function JsonFormatSection() {
           />
 
           {/* 键名排序开关 */}
-          <FormControlLabel
-            control={
-              <Switch
-                size="small"
-                checked={sortKeys}
-                onChange={(e) => setSortKeys(e.target.checked)}
-              />
-            }
-            label={
-              <Typography variant="caption" sx={{ fontWeight: 700, fontSize: '0.7rem' }}>
-                {t('jsonFormat:sortKeys')}
-              </Typography>
-            }
-            sx={{ ml: 1 }}
-          />
-        </Stack>
+          <label className="flex items-center gap-2 ml-2">
+            <input
+              type="checkbox"
+              checked={sortKeys}
+              onChange={(e) => setSortKeys(e.target.checked)}
+              className="h-4 w-4 rounded border-gray-300 text-blue-500 focus:ring-blue-500"
+            />
+            <span className="text-xs font-bold">{t('jsonFormat:sortKeys')}</span>
+          </label>
+        </div>
 
-        <Stack direction="row" spacing={1}>
-          <Button variant="text" onClick={handleClear} sx={{ borderRadius: 3 }}>
+        <div className="flex gap-2">
+          <Button variant="outline" onClick={handleClear} className="rounded-lg">
             {t('jsonFormat:clearButton')}
           </Button>
           <Button
-            variant="contained"
+            variant="default"
             disabled={!canFormat}
             onClick={handleFormat}
-            sx={{ borderRadius: 3, fontWeight: 700, px: 3 }}
+            className="rounded-lg font-bold px-4"
           >
             {t('jsonFormat:formatButton')}
           </Button>
-        </Stack>
-      </Stack>
+        </div>
+      </div>
 
       {/* 输入区 */}
-      <Box>
-        <TextField
-          multiline
-          rows={6}
-          fullWidth
+      <div>
+        <textarea
           placeholder={t('jsonFormat:inputPlaceholder')}
           value={input}
           onChange={(e) => setInput(e.target.value)}
-          error={Boolean(error)}
-          sx={jsonDiffPageStyles.INPUT_STYLE}
+          rows={6}
+          className={`w-full rounded-lg border ${
+            error ? 'border-red-300' : 'border-gray-200'
+          } p-3 font-mono text-sm focus:outline-none focus:ring-2 focus:ring-blue-500 resize-y`}
         />
         {error && (
-          <FormHelperText error sx={{ mx: 1.5, mt: 0.5, fontWeight: 600 }}>
+          <p className="mx-3 mt-1 text-xs font-semibold text-red-500">
             {t('jsonFormat:invalidJson')}
-          </FormHelperText>
+          </p>
         )}
-      </Box>
+      </div>
 
       {/* 格式化结果 */}
       {result && result.formatted ? (
-        <Box
-          sx={{
-            position: 'relative',
-            borderRadius: 3,
-            bgcolor: 'background.paper',
-            border: '1px solid',
-            borderColor: 'divider',
-            overflow: 'hidden',
-          }}
-        >
+        <div className="relative rounded-lg bg-white border border-gray-200 overflow-hidden">
           {/* 结果头部 */}
-          <Stack
-            direction="row"
-            justifyContent="space-between"
-            alignItems="center"
-            sx={{
-              px: 2,
-              py: 1,
-              borderBottom: '1px solid',
-              borderColor: 'divider',
-              bgcolor: (theme) =>
-                theme.palette.mode === 'dark' ? 'rgba(255,255,255,0.03)' : 'grey.50',
-            }}
-          >
-            <Stack direction="row" spacing={2} alignItems="center">
-              <Typography
-                variant="caption"
-                sx={{ fontWeight: 800, color: 'text.secondary', fontSize: '0.7rem' }}
-              >
+          <div className="flex justify-between items-center px-4 py-2 border-b border-gray-200 bg-gray-50">
+            <div className="flex gap-4 items-center">
+              <span className="text-[11px] font-extrabold text-gray-500">
                 {t('jsonFormat:outputLabel')}
-              </Typography>
-              <Typography variant="caption" sx={{ color: 'text.disabled', fontSize: '0.65rem' }}>
+              </span>
+              <span className="text-[10px] text-gray-400">
                 {t('jsonFormat:originalSize')}: {formatByteSize(result.originalBytes)}
-              </Typography>
-              <Typography variant="caption" sx={{ color: 'text.disabled', fontSize: '0.65rem' }}>
+              </span>
+              <span className="text-[10px] text-gray-400">
                 {t('jsonFormat:formattedSize')}: {formatByteSize(result.formattedBytes)}
-              </Typography>
-            </Stack>
+              </span>
+            </div>
             <CopyButton text={result.formatted} showMessage={showMessage} />
-          </Stack>
+          </div>
 
           {/* 格式化内容 */}
-          <Box
-            sx={{
-              p: 2,
-              fontFamily: 'monospace',
-              fontSize: '0.8rem',
-              whiteSpace: 'pre-wrap',
-              wordBreak: 'break-all',
-              maxHeight: 400,
-              overflowY: 'auto',
-              lineHeight: 1.6,
-            }}
-          >
+          <div className="p-4 font-mono text-sm whitespace-pre-wrap break-all max-h-[400px] overflow-y-auto leading-relaxed">
             {result.formatted}
-          </Box>
-        </Box>
+          </div>
+        </div>
       ) : (
-        <Box
-          sx={{
-            p: 3,
-            borderRadius: 3,
-            bgcolor: (theme) =>
-              theme.palette.mode === 'dark' ? 'rgba(255,255,255,0.03)' : 'grey.50',
-            border: '1px dashed',
-            borderColor: (theme) =>
-              theme.palette.mode === 'dark' ? 'rgba(255,255,255,0.15)' : 'grey.300',
-            textAlign: 'center',
-          }}
-        >
-          <Typography variant="body2" color="text.secondary" sx={{ fontWeight: 600 }}>
-            {t('jsonFormat:emptyHint')}
-          </Typography>
-        </Box>
+        <div className="p-4 rounded-lg bg-gray-50 border border-dashed border-gray-300 text-center">
+          <p className="text-sm font-semibold text-gray-500">{t('jsonFormat:emptyHint')}</p>
+        </div>
       )}
-    </Stack>
+    </div>
   );
 }
diff --git a/pages/JsonTools/JsonTree.tsx b/pages/JsonTools/JsonTree.tsx
index 332cf59..96bf739 100644
--- a/pages/JsonTools/JsonTree.tsx
+++ b/pages/JsonTools/JsonTree.tsx
@@ -1,7 +1,4 @@
-import { Box, Collapse, useTheme } from '@mui/material';
-import type { Theme } from '@mui/material/styles';
 import { useEffect, useMemo, useRef, useState } from 'react';
-import { surfaceTint } from '@/config/pageTheme';
 import type { DiffNode, DiffType } from './types';
 
 export type TreeSide = 'left' | 'right';
@@ -43,19 +40,19 @@ const getValueForSide = (node: DiffNode, side: TreeSide): unknown => {
   return side === 'left' ? node.oldValue : node.newValue;
 };
 
-const getRowBg = (type: DiffType, side: TreeSide, theme: Theme): string | undefined => {
+const getRowBg = (type: DiffType, side: TreeSide): string | undefined => {
   if (!shouldRenderOnSide(type, side)) return undefined;
-  if (type === 'added') return surfaceTint(theme, theme.palette.success.main, 0.15);
-  if (type === 'removed') return surfaceTint(theme, theme.palette.error.main, 0.15);
-  if (type === 'modified') return surfaceTint(theme, theme.palette.warning.main, 0.15);
+  if (type === 'added') return 'bg-green-50';
+  if (type === 'removed') return 'bg-red-50';
+  if (type === 'modified') return 'bg-amber-50';
   return undefined;
 };
 
 const getValueColor = (type: DiffType, side: TreeSide): string | undefined => {
   if (!shouldRenderOnSide(type, side)) return undefined;
-  if (type === 'added') return 'success.main';
-  if (type === 'removed') return 'error.main';
-  if (type === 'modified') return 'warning.main';
+  if (type === 'added') return 'text-green-600';
+  if (type === 'removed') return 'text-red-600';
+  if (type === 'modified') return 'text-amber-600';
   return undefined;
 };
 
@@ -74,7 +71,6 @@ const NodeRow = ({
   // 'auto' = follow defaults + activePath; otherwise user explicitly toggled
   const [override, setOverride] = useState<'auto' | 'open' | 'closed'>('auto');
   const rowRef = useRef<HTMLDivElement | null>(null);
-  const theme = useTheme();
 
   const onActivePath = Boolean(
     activePath &&
@@ -99,13 +95,17 @@ const NodeRow = ({
 
   if (!shouldRenderOnSide(node.type, side)) {
     // 渲染占位空行以保持左右两侧高度一致
-    return <Box sx={{ pl: depth * 1.5, color: 'transparent', userSelect: 'none' }}>·</Box>;
+    return (
+      <div className="text-transparent select-none" style={{ paddingLeft: `${depth * 1.5}rem` }}>
+        ·
+      </div>
+    );
   }
 
   const value = getValueForSide(node, side);
   const isContainer = isContainerValue(value) && Array.isArray(node.children);
   const isArray = Array.isArray(value);
-  const bg = getRowBg(node.type, side, theme);
+  const bg = getRowBg(node.type, side);
   const valueColor = getValueColor(node.type, side);
   const isActive = activePath === node.path;
 
@@ -116,50 +116,29 @@ const NodeRow = ({
     const open = isArray ? '[' : '{';
     const close = isArray ? ']' : '}';
     return (
-      <Box ref={rowRef}>
-        <Box
+      <div ref={rowRef}>
+        <div
           onClick={() => setOverride(expanded ? 'closed' : 'open')}
-          sx={{
-            cursor: 'pointer',
-            pl: depth * 1.5,
-            pr: 1,
-            py: 0.2,
-            bgcolor: bg,
-            outline: isActive ? '2px solid' : 'none',
-            outlineColor: 'primary.main',
-            borderRadius: 0.5,
-            display: 'flex',
-            alignItems: 'center',
-            gap: 0.5,
-            whiteSpace: 'nowrap',
-            '&:hover': { bgcolor: bg ?? 'action.hover' },
-          }}
+          className={`cursor-pointer pr-1 py-0.5 ${bg ?? ''} ${
+            isActive ? 'ring-2 ring-blue-500 rounded' : ''
+          } flex items-center gap-1 whitespace-nowrap hover:${bg ? 'bg-opacity-80' : 'bg-gray-50'}`}
+          style={{ paddingLeft: `${depth * 1.5}rem` }}
         >
-          <Box component="span" sx={{ width: 12, color: 'text.secondary', fontSize: '0.7rem' }}>
-            {expanded ? '▾' : '▸'}
-          </Box>
+          <span className="w-3 text-gray-500 text-[11px]">{expanded ? '▾' : '▸'}</span>
           {!isRoot && (
-            <Box component="span" sx={{ color: 'text.primary', fontWeight: 700 }}>
-              {isArrayKeyDisplay(node.key)}:
-            </Box>
+            <span className="text-gray-900 font-bold">{isArrayKeyDisplay(node.key)}:</span>
           )}
-          <Box component="span" sx={{ color: 'text.secondary' }}>
-            {open}
-          </Box>
+          <span className="text-gray-500">{open}</span>
+          {!expanded && <span className="text-gray-400 italic">{summarize(value)}</span>}
           {!expanded && (
-            <Box component="span" sx={{ color: 'text.disabled', fontStyle: 'italic' }}>
-              {summarize(value)}
-            </Box>
-          )}
-          {!expanded && (
-            <Box component="span" sx={{ color: 'text.secondary' }}>
+            <span className="text-gray-500">
               {close}
               {isLastChild ? '' : ','}
-            </Box>
+            </span>
           )}
-        </Box>
-        <Collapse in={expanded} unmountOnExit>
-          <Box>
+        </div>
+        {expanded && (
+          <div>
             {node.children.map((child, idx) => (
               <NodeRow
                 key={child.path}
@@ -171,52 +150,37 @@ const NodeRow = ({
                 isLastChild={idx === node.children!.length - 1}
               />
             ))}
-          </Box>
-          <Box
-            sx={{
-              pl: depth * 1.5,
-              color: 'text.secondary',
-              whiteSpace: 'nowrap',
-              ml: '17px',
-            }}
+          </div>
+        )}
+        {expanded && (
+          <div
+            className="text-gray-500 whitespace-nowrap"
+            style={{ paddingLeft: `${depth * 1.5 + 1.0625}rem` }}
           >
             {close}
             {isLastChild ? '' : ','}
-          </Box>
-        </Collapse>
-      </Box>
+          </div>
+        )}
+      </div>
     );
   }
 
   // 叶子节点
   return (
-    <Box
+    <div
       ref={rowRef}
-      sx={{
-        pl: depth * 1.5,
-        pr: 1,
-        py: 0.2,
-        bgcolor: bg,
-        outline: isActive ? '2px solid' : 'none',
-        outlineColor: 'primary.main',
-        borderRadius: 0.5,
-        display: 'flex',
-        alignItems: 'center',
-        gap: 0.5,
-        whiteSpace: 'nowrap',
-      }}
+      className={`pr-1 py-0.5 ${bg ?? ''} ${
+        isActive ? 'ring-2 ring-blue-500 rounded' : ''
+      } flex items-center gap-1 whitespace-nowrap`}
+      style={{ paddingLeft: `${depth * 1.5}rem` }}
     >
-      <Box component="span" sx={{ width: 12 }} />
-      {!isRoot && (
-        <Box component="span" sx={{ color: 'text.primary', fontWeight: 700 }}>
-          {isArrayKeyDisplay(node.key)}:
-        </Box>
-      )}
-      <Box component="span" sx={{ color: valueColor ?? 'text.primary' }}>
+      <span className="w-3" />
+      {!isRoot && <span className="text-gray-900 font-bold">{isArrayKeyDisplay(node.key)}:</span>}
+      <span className={valueColor ?? 'text-gray-900'}>
         {formatPrimitive(value)}
         {isLastChild ? '' : ','}
-      </Box>
-    </Box>
+      </span>
+    </div>
   );
 };
 
@@ -242,21 +206,7 @@ export default function JsonTree({
 }: JsonTreeProps) {
   const sideKey = useMemo(() => side, [side]);
   return (
-    <Box
-      sx={{
-        p: 1.5,
-        borderRadius: 3,
-        bgcolor: 'background.paper',
-        border: '1px solid',
-        borderColor: 'divider',
-        fontFamily: 'monospace',
-        fontSize: '0.8rem',
-        overflowX: 'auto',
-        minHeight: 200,
-        maxHeight: 480,
-        overflowY: 'auto',
-      }}
-    >
+    <div className="p-3 rounded-lg bg-white border border-gray-200 font-mono text-sm overflow-x-auto min-h-[200px] max-h-[480px] overflow-y-auto">
       <NodeRow
         node={node}
         side={sideKey}
@@ -265,7 +215,7 @@ export default function JsonTree({
         activePath={activePath}
         isLastChild
       />
-    </Box>
+    </div>
   );
 }
 
diff --git a/pages/JsonTools/index.tsx b/pages/JsonTools/index.tsx
index 3135eaa..7d55361 100644
--- a/pages/JsonTools/index.tsx
+++ b/pages/JsonTools/index.tsx
@@ -1,12 +1,8 @@
 import { useEffect, useMemo, useState, useCallback } from 'react';
-import { Box, Button, Container, Stack, Typography } from '@mui/material';
-import CompareArrowsIcon from '@mui/icons-material/CompareArrows';
-import DataObjectIcon from '@mui/icons-material/DataObject';
-import TransformIcon from '@mui/icons-material/Transform';
-import CompressIcon from '@mui/icons-material/Compress';
+import { Button } from '@/components/ui/button';
+import { GitCompareArrows, Braces, ArrowRightLeft, Minimize2 } from 'lucide-react';
 import { useLazyTranslation } from '@/utils/useLazyTranslation';
 import PageHeader from '@/components/PageHeader';
-import { jsonDiffPageStyles } from '@/config/pageTheme';
 import JsonDiffInput from './JsonDiffInput';
 import DiffResult from './DiffResult';
 import DiffNavigator from './DiffNavigator';
@@ -20,7 +16,7 @@ import { jsonToToml } from '@/utils/jsonToToml';
 import { minifyJson } from '@/utils/jsonFormatter';
 import { useStorageState } from '@/utils/useStorageState';
 import type { JsonToolsPageMode } from '@/types/storage';
-import SwtichButtonGroup from '@/components/SwitchButtonGroup';
+import SwitchButtonGroup from '@/components/SwitchButtonGroup';
 
 interface ParseState {
   value: unknown;
@@ -118,11 +114,11 @@ export default function Index() {
   };
 
   const modeIcon: Record<PageMode, React.ReactNode> = {
-    diff: <CompareArrowsIcon />,
-    format: <DataObjectIcon />,
-    yaml: <TransformIcon />,
-    toml: <TransformIcon />,
-    minify: <CompressIcon />,
+    diff: <GitCompareArrows className="h-5 w-5" />,
+    format: <Braces className="h-5 w-5" />,
+    yaml: <ArrowRightLeft className="h-5 w-5" />,
+    toml: <ArrowRightLeft className="h-5 w-5" />,
+    minify: <Minimize2 className="h-5 w-5" />,
   };
 
   const yamlConvert: ConvertFunction = useCallback((text: string) => {
@@ -141,18 +137,18 @@ export default function Index() {
   }, []);
 
   return (
-    <Box>
-      <Container sx={{ p: 2 }}>
+    <div>
+      <div className="p-2">
         <PageHeader
           title={t(modeTitles[pageMode].title)}
           subtitle={t(modeTitles[pageMode].subtitle)}
           icon={modeIcon[pageMode]}
-          iconColor={jsonDiffPageStyles.primaryColor}
+          iconColor="#3b82f6"
         />
 
-        <Stack spacing={2.5}>
+        <div className="flex flex-col gap-6">
           {/* 页面模式切换器 */}
-          <SwtichButtonGroup
+          <SwitchButtonGroup
             value={pageMode}
             onChange={(v: PageMode) => setPageMode(v)}
             options={[
@@ -168,13 +164,8 @@ export default function Index() {
           {pageMode === 'diff' ? (
             <>
               {/* 工具栏 */}
-              <Stack
-                direction={{ xs: 'column', sm: 'row' }}
-                spacing={1.5}
-                justifyContent="space-between"
-                alignItems={{ xs: 'stretch', sm: 'center' }}
-              >
-                <SwtichButtonGroup
+              <div className="flex flex-col sm:flex-row gap-3 justify-between items-stretch sm:items-center">
+                <SwitchButtonGroup
                   value={viewMode}
                   onChange={(v: ViewMode) => setViewMode(v)}
                   options={[
@@ -183,23 +174,23 @@ export default function Index() {
                   ]}
                   size="small"
                 />
-                <Stack direction="row" spacing={1}>
-                  <Button variant="text" onClick={handleClear} sx={{ borderRadius: 3 }}>
+                <div className="flex gap-2">
+                  <Button variant="outline" onClick={handleClear} className="rounded-lg">
                     {t('jsonDiff:clearButton')}
                   </Button>
                   <Button
-                    variant="contained"
+                    variant="default"
                     disabled={!canCompare}
                     onClick={handleCompare}
-                    sx={{ borderRadius: 3, fontWeight: 700, px: 3, whiteSpace: 'nowrap' }}
+                    className="rounded-lg font-bold px-4 whitespace-nowrap"
                   >
                     {t('jsonDiff:compareButton')}
                   </Button>
-                </Stack>
-              </Stack>
+                </div>
+              </div>
 
               {/* 输入区 */}
-              <Stack direction={{ xs: 'column', md: 'row' }} spacing={2}>
+              <div className="flex flex-col md:flex-row gap-4">
                 <JsonDiffInput
                   label={t('jsonDiff:leftLabel')}
                   placeholder={t('jsonDiff:leftPlaceholder')}
@@ -214,7 +205,7 @@ export default function Index() {
                   onChange={setRightInput}
                   error={rightError}
                 />
-              </Stack>
+              </div>
 
               {/* 差异展示 */}
               {diffResult ? (
@@ -228,22 +219,9 @@ export default function Index() {
                   <DiffResult result={diffResult} viewMode={viewMode} activePath={activePath} />
                 </>
               ) : (
-                <Box
-                  sx={{
-                    p: 3,
-                    borderRadius: 3,
-                    bgcolor: (theme) =>
-                      theme.palette.mode === 'dark' ? 'rgba(255,255,255,0.03)' : 'grey.50',
-                    border: '1px dashed',
-                    borderColor: (theme) =>
-                      theme.palette.mode === 'dark' ? 'rgba(255,255,255,0.15)' : 'grey.300',
-                    textAlign: 'center',
-                  }}
-                >
-                  <Typography variant="body2" color="text.secondary" sx={{ fontWeight: 600 }}>
-                    {t('jsonDiff:emptyHint')}
-                  </Typography>
-                </Box>
+                <div className="p-4 rounded-lg bg-gray-50 border border-dashed border-gray-300 text-center">
+                  <p className="text-sm font-semibold text-gray-500">{t('jsonDiff:emptyHint')}</p>
+                </div>
               )}
             </>
           ) : pageMode === 'format' ? (
@@ -259,8 +237,8 @@ export default function Index() {
               convertButtonKey="minifyButton"
             />
           )}
-        </Stack>
-      </Container>
-    </Box>
+        </div>
+      </div>
+    </div>
   );
 }