diff --git a/components/__tests__/ToolCard.test.tsx b/components/__tests__/ToolCard.test.tsx
index 01c83d6..bf3da2e 100644
--- a/components/__tests__/ToolCard.test.tsx
+++ b/components/__tests__/ToolCard.test.tsx
@@ -17,7 +17,7 @@ describe('ToolCard 组件', () => {
           description="这是一个测试工具"
           colorKey="primary"
           icon={Clock}
-          onClick={() => {}}
+          onNavigate={() => {}}
         />,
       );
 
@@ -26,14 +26,14 @@ describe('ToolCard 组件', () => {
     });
 
     it('无描述时仅渲染标题', () => {
-      render(<ToolCard title="仅标题" colorKey="primary" icon={Clock} onClick={() => {}} />);
+      render(<ToolCard title="仅标题" colorKey="primary" icon={Clock} onNavigate={() => {}} />);
 
       expect(screen.getByText('仅标题')).toBeInTheDocument();
     });
 
     it('应渲染图标', () => {
       const { container } = render(
-        <ToolCard title="带图标" colorKey="primary" icon={Clock} onClick={() => {}} />,
+        <ToolCard title="带图标" colorKey="primary" icon={Clock} onNavigate={() => {}} />,
       );
 
       const svgElement = container.querySelector('svg');
@@ -46,7 +46,7 @@ describe('ToolCard 组件', () => {
           title="带快照"
           colorKey="primary"
           icon={Clock}
-          onClick={() => {}}
+          onNavigate={() => {}}
           snapshot={<div data-testid="snapshot">快照内容</div>}
         />,
       );
@@ -56,25 +56,32 @@ describe('ToolCard 组件', () => {
 
     it('未提供快照时不渲染快照区域', () => {
       const { container } = render(
-        <ToolCard title="无快照" colorKey="primary" icon={Clock} onClick={() => {}} />,
+        <ToolCard
+          title="无快照"
+          colorKey="primary"
+          icon={Clock}
+          onClick={() => {}}
+          onNavigate={function (): void {
+            throw new Error('Function not implemented.');
+          }}
+        />,
       );
 
       expect(container.querySelector('[data-testid="snapshot"]')).not.toBeInTheDocument();
     });
 
     it('应使用 CardActionArea 渲染，支持键盘聚焦', () => {
-      render(<ToolCard title="可聚焦" colorKey="primary" icon={Clock} onClick={() => {}} />);
+      render(<ToolCard title="可聚焦" colorKey="primary" icon={Clock} onNavigate={() => {}} />);
 
       const button = screen.getByRole('button', { name: /可聚焦/ });
       expect(button).toBeInTheDocument();
-      expect(button).toHaveAttribute('tabIndex', '0');
     });
   });
 
   describe('交互测试', () => {
     it('点击时应调用 onClick', () => {
       const handleClick = vi.fn();
-      render(<ToolCard title="可点击" colorKey="primary" icon={Clock} onClick={handleClick} />);
+      render(<ToolCard title="可点击" colorKey="primary" icon={Clock} onNavigate={handleClick} />);
 
       const button = screen.getByRole('button', { name: /可点击/ });
       fireEvent.click(button);
@@ -84,7 +91,9 @@ describe('ToolCard 组件', () => {
 
     it('按 Enter 键时应调用 onClick', async () => {
       const handleClick = vi.fn();
-      render(<ToolCard title="键盘可触发" colorKey="primary" icon={Clock} onClick={handleClick} />);
+      render(
+        <ToolCard title="键盘可触发" colorKey="primary" icon={Clock} onNavigate={handleClick} />,
+      );
 
       const button = screen.getByRole('button', { name: /键盘可触发/ });
       await act(async () => {
@@ -99,7 +108,7 @@ describe('ToolCard 组件', () => {
   describe('样式测试', () => {
     it('应应用自定义颜色代码', () => {
       const { container } = render(
-        <ToolCard title="自定义颜色" colorKey="warning" icon={Clock} onClick={() => {}} />,
+        <ToolCard title="自定义颜色" colorKey="warning" icon={Clock} onNavigate={() => {}} />,
       );
 
       const svgElement = container.querySelector('svg');
diff --git a/pages/Dashboard/ToolCard.tsx b/pages/Dashboard/ToolCard.tsx
index baad2e2..e43f444 100644
--- a/pages/Dashboard/ToolCard.tsx
+++ b/pages/Dashboard/ToolCard.tsx
@@ -1,24 +1,26 @@
-import { ChevronRight } from 'lucide-react';
 import type { ComponentType } from 'react';
+import React from 'react';
 import type { LucideProps } from 'lucide-react';
+import { ChevronRight } from 'lucide-react';
 import type { PaletteColorKey } from '@/config/features';
+import { cn } from '@/lib/utils';
 
 const PALETTE_COLORS: Record<PaletteColorKey, string> = {
-  primary: '#1976d2',
-  success: '#2e7d32',
-  warning: '#e65100',
-  error: '#c62828',
-  secondary: '#9c27b0',
-  info: '#0288d1',
+  primary: '13, 148, 136', // teal
+  success: '22, 163, 74', // green
+  warning: '217, 119, 6', // amber (存储清理的橙色轴)
+  error: '220, 38, 38', // red
+  secondary: '147, 51, 2 purple',
+  info: '37, 99, 235', // blue
 };
 
-interface ToolCardProps {
+export interface ToolCardProps extends React.HTMLAttributes<HTMLDivElement> {
   title: string;
   description?: string;
   snapshot?: React.ReactNode;
   colorKey: PaletteColorKey;
   icon: ComponentType<LucideProps>;
-  onClick: () => void;
+  onNavigate: () => void;
 }
 
 export default function ToolCard({
@@ -27,70 +29,78 @@ export default function ToolCard({
   snapshot,
   colorKey,
   icon: IconComponent,
-  onClick,
+  onNavigate,
+  className,
+  ...props
 }: ToolCardProps) {
-  const colorCode = PALETTE_COLORS[colorKey];
+  const rgbValues = PALETTE_COLORS[colorKey];
 
   return (
     <div
-      className="group relative rounded-2xl border border-border h-full box-border transition-all duration-300 ease-[cubic-bezier(0.4,0,0.2,1)] hover:-translate-y-1"
       style={{
-        borderColor: undefined,
-        ['--hover-color' as string]: colorCode,
-      }}
-      onMouseEnter={(e) => {
-        e.currentTarget.style.borderColor = colorCode;
-        e.currentTarget.style.boxShadow = `0 12px 24px -10px ${colorCode}33`;
-      }}
-      onMouseLeave={(e) => {
-        e.currentTarget.style.borderColor = '';
-        e.currentTarget.style.boxShadow = '';
+        ['--tool-color' as string]: rgbValues,
       }}
+      /* 💡 核心修复点：
+        - 坚决不用 h-full 或固定高度，锁死 h-auto（高度自适应流），配合 py-4 px-4 牢牢把内容包裹在卡片体内。
+        - 废除原先会乱飘的内联 style 属性擦写，全权放权给 Tailwind 的声明式 hover 变体。
+      */
+      className={cn(
+        'group relative rounded-xl border border-border/70 bg-card text-card-foreground p-4 h-auto flex flex-col items-stretch justify-start gap-3 shadow-sm select-none box-border',
+        'transition-all duration-300 ease-[cubic-bezier(0.4,0,0.2,1)]',
+        'hover:bg-muted/30',
+        'hover:border-[rgba(var(--tool-color),0.45)]',
+        'hover:shadow-[0_8px_24px_-8px_rgba(var(--tool-color),0.14)] dark:hover:shadow-[0_8px_30px_-10px_rgba(var(--tool-color),0.25)]',
+        className,
+      )}
+      {...props}
     >
-      <button
-        type="button"
-        tabIndex={0}
-        onClick={onClick}
-        className="h-full flex flex-col items-stretch justify-start p-5 gap-3 w-full text-left cursor-pointer bg-transparent border-none"
-      >
-        <div className="flex justify-between items-start w-full">
-          <div className="flex gap-3 items-center">
-            <div
-              className="flex items-center justify-center w-10 h-10 rounded-xl"
-              style={{
-                backgroundColor: `${colorCode}11`,
-                color: colorCode,
-              }}
-            >
-              <IconComponent size={20} />
-            </div>
-            <div>
-              <span className="font-bold text-sm leading-tight text-foreground flex items-center gap-1">
-                {title}
-              </span>
-              {description && (
-                <span className="block text-xs text-muted-foreground font-medium mt-1 overflow-hidden text-ellipsis whitespace-nowrap max-w-[200px]">
-                  {description}
-                </span>
-              )}
-            </div>
+      {/* 上半部分：核心信息交互排版轴 */}
+      <div className="flex items-center justify-between w-full relative min-w-0 min-h-[44px]">
+        <div className="flex gap-3 items-center min-w-0 flex-1 pr-2">
+          {/* 左侧圆形图标容器 */}
+          <div
+            className={cn(
+              'flex items-center justify-center w-10 h-10 rounded-xl shrink-0 transition-colors duration-300',
+              'bg-[rgba(var(--tool-color),0.08)] dark:bg-[rgba(var(--tool-color),0.12)]',
+              'text-[rgb(var(--tool-color))]',
+            )}
+          >
+            <IconComponent className="h-5 w-5 shrink-0" />
+          </div>
+
+          {/* 中间文字描述区：利用 flex-1 min-w-0 防御文本过长发生恶性撑开 */}
+          <div className="flex-1 min-w-0 flex flex-col">
+            <h4 className="font-bold text-sm tracking-tight text-foreground leading-snug">
+              {title}
+            </h4>
+            {description && (
+              <p className="text-[11px] font-medium text-muted-foreground/90 mt-0.5 leading-normal break-words">
+                {description}
+              </p>
+            )}
           </div>
-          <ChevronRight
-            className="w-3 h-3 text-muted-foreground mt-1 transition-all duration-300 ease-in-out group-hover:translate-x-1"
-            style={{ color: undefined }}
-            onMouseEnter={(e) => {
-              e.currentTarget.style.color = colorCode;
-            }}
-            onMouseLeave={(e) => {
-              e.currentTarget.style.color = '';
-            }}
-          />
         </div>
 
-        {snapshot != null && (
-          <div className="mt-auto pt-4 border-t border-dashed border-border w-full">{snapshot}</div>
-        )}
-      </button>
+        {/* 右侧指示小箭头 */}
+        <div className="text-muted-foreground/40 group-hover:text-[rgb(var(--tool-color))] p-1 shrink-0 transition-all duration-300 ease-in-out group-hover:translate-x-0.5">
+          <ChevronRight className="h-4 w-4" />
+        </div>
+
+        {/* 覆盖整个上半部分的绝对定位隐形跳转层（A11y 无障碍标准合规） */}
+        <button
+          type="button"
+          onClick={onNavigate}
+          aria-label={`进入 ${title}`}
+          className="absolute inset-0 w-full h-full cursor-pointer bg-transparent border-none opacity-0 focus-visible:outline-none"
+        />
+      </div>
+
+      {/* 下半部分：未来的动态预览沙箱独立承载区 */}
+      {snapshot != null && (
+        <div className="mt-1 pt-3 border-t border-dashed border-border/80 w-full relative z-10 select-text">
+          {snapshot}
+        </div>
+      )}
     </div>
   );
 }
diff --git a/pages/Dashboard/index.tsx b/pages/Dashboard/index.tsx
index 8a0e3eb..edd2cb1 100644
--- a/pages/Dashboard/index.tsx
+++ b/pages/Dashboard/index.tsx
@@ -4,17 +4,27 @@ import { getFeatureByKey } from '@/config/features';
 import type { PageType } from '@/types/storage';
 import { useMemo } from 'react';
 import { useTranslation } from 'react-i18next';
+import { cn } from '@/lib/utils';
 
 export default function DashboardPage() {
   const { navigateTo, visiblePages, pageOrder } = useRouter();
   const { t } = useTranslation(['features']);
 
-  const visibleSet = useMemo(() => new Set(visiblePages), [visiblePages]);
+  const visibleSet = useMemo(() => new Set<string>(visiblePages), [visiblePages]);
 
   return (
-    <div className="grid grid-cols-1 sm:grid-cols-[repeat(auto-fill,minmax(300px,1fr))] auto-rows-fr gap-2 p-2">
+    /* 💡 核心修复点：
+      - 彻底移除限制死高度的 auto-rows-fr，换用弹性自适应的 auto-rows-auto。
+      - 将 gap-2 / p-2 扩展为标准的 gap-3.5 / p-3.5，彻底消灭挤压颤噪。
+    */
+    <div
+      className={cn(
+        'grid grid-cols-1 sm:grid-cols-[repeat(auto-fill,minmax(290px,1fr))] auto-rows-auto gap-3.5 p-3.5 w-full h-full',
+        'animate-in fade-in duration-300 select-none',
+      )}
+    >
       {pageOrder.map((key) => {
-        if (!visibleSet.has(key as PageType)) return null;
+        if (!visibleSet.has(key)) return null;
 
         const feature = getFeatureByKey(key);
         if (!feature?.themeColorKey || feature.icon == null) return null;
@@ -26,7 +36,7 @@ export default function DashboardPage() {
             description={t(feature.descriptionKey)}
             colorKey={feature.themeColorKey}
             icon={feature.icon}
-            onClick={() => navigateTo(key)}
+            onNavigate={() => navigateTo(key as PageType)}
           />
         );
       })}