diff --git a/src/components/layout/MainLayout.tsx b/src/components/layout/MainLayout.tsx
index 982e78b..be9ce9f 100644
--- a/src/components/layout/MainLayout.tsx
+++ b/src/components/layout/MainLayout.tsx
@@ -117,6 +117,12 @@ const headerIcons = {
       <path d="M12 3a6 6 0 0 0 9 9 9 9 0 1 1-9-9z" />
     </svg>
   ),
+  whiteTheme: (
+    <svg {...headerIconProps}>
+      <circle cx="12" cy="12" r="7" />
+      <circle cx="12" cy="12" r="3" fill="currentColor" stroke="none" />
+    </svg>
+  ),
   autoTheme: (
     <svg {...headerIconProps}>
       <defs>
@@ -571,7 +577,9 @@ export function MainLayout() {
                 ? headerIcons.autoTheme
                 : theme === 'dark'
                   ? headerIcons.moon
-                  : headerIcons.sun}
+                  : theme === 'white'
+                    ? headerIcons.whiteTheme
+                    : headerIcons.sun}
             </Button>
             <Button variant="ghost" size="sm" onClick={logout} title={t('header.logout')}>
               {headerIcons.logout}
diff --git a/src/i18n/locales/en.json b/src/i18n/locales/en.json
index 6227f44..93a26e1 100644
--- a/src/i18n/locales/en.json
+++ b/src/i18n/locales/en.json
@@ -1400,6 +1400,7 @@
   "theme": {
     "switch": "Theme",
     "light": "Light",
+    "white": "Pure White",
     "dark": "Dark",
     "switch_to_light": "Switch to light mode",
     "switch_to_dark": "Switch to dark mode",
diff --git a/src/i18n/locales/ru.json b/src/i18n/locales/ru.json
index 0d56827..23c7f44 100644
--- a/src/i18n/locales/ru.json
+++ b/src/i18n/locales/ru.json
@@ -1405,6 +1405,7 @@
   "theme": {
     "switch": "Тема",
     "light": "Светлая",
+    "white": "Чисто-белая",
     "dark": "Тёмная",
     "switch_to_light": "Переключиться на светлую тему",
     "switch_to_dark": "Переключиться на тёмную тему",
diff --git a/src/i18n/locales/zh-CN.json b/src/i18n/locales/zh-CN.json
index aecdbbd..5d3b522 100644
--- a/src/i18n/locales/zh-CN.json
+++ b/src/i18n/locales/zh-CN.json
@@ -1400,6 +1400,7 @@
   "theme": {
     "switch": "主题",
     "light": "亮色",
+    "white": "纯白",
     "dark": "暗色",
     "switch_to_light": "切换到亮色模式",
     "switch_to_dark": "切换到暗色模式",
diff --git a/src/stores/useThemeStore.ts b/src/stores/useThemeStore.ts
index 65088ce..0f2976b 100644
--- a/src/stores/useThemeStore.ts
+++ b/src/stores/useThemeStore.ts
@@ -25,12 +25,28 @@ const getSystemTheme = (): ResolvedTheme => {
   return 'light';
 };
 
-const applyTheme = (resolved: ResolvedTheme) => {
+const resolveTheme = (theme: Theme): ResolvedTheme | 'white' => {
+  if (theme === 'auto') {
+    return getSystemTheme();
+  }
+  if (theme === 'white') {
+    return 'white';
+  }
+  return theme;
+};
+
+const applyTheme = (resolved: ResolvedTheme | 'white') => {
   if (resolved === 'dark') {
     document.documentElement.setAttribute('data-theme', 'dark');
-  } else {
-    document.documentElement.removeAttribute('data-theme');
+    return;
   }
+
+  if (resolved === 'white') {
+    document.documentElement.setAttribute('data-theme', 'white');
+    return;
+  }
+
+  document.documentElement.removeAttribute('data-theme');
 };
 
 export const useThemeStore = create<ThemeState>()(
@@ -40,14 +56,17 @@ export const useThemeStore = create<ThemeState>()(
       resolvedTheme: 'light',
 
       setTheme: (theme) => {
-        const resolved: ResolvedTheme = theme === 'auto' ? getSystemTheme() : theme;
+        const resolved = resolveTheme(theme);
         applyTheme(resolved);
-        set({ theme, resolvedTheme: resolved });
+        set({
+          theme,
+          resolvedTheme: resolved === 'white' ? 'light' : resolved,
+        });
       },
 
       cycleTheme: () => {
         const { theme, setTheme } = get();
-        const order: Theme[] = ['light', 'dark', 'auto'];
+        const order: Theme[] = ['light', 'white', 'dark', 'auto'];
         const currentIndex = order.indexOf(theme);
         const nextTheme = order[(currentIndex + 1) % order.length];
         setTheme(nextTheme);
diff --git a/src/styles/themes.scss b/src/styles/themes.scss
index 1410ed2..ab37a28 100644
--- a/src/styles/themes.scss
+++ b/src/styles/themes.scss
@@ -56,6 +56,59 @@
   --accent-tertiary: var(--bg-tertiary);
 }
 
+// 纯白主题
+[data-theme='white'] {
+  --bg-secondary: #ffffff;
+  --bg-primary: #ffffff;
+  --bg-tertiary: #f6f6f6;
+  --bg-hover: var(--bg-tertiary);
+  --bg-quinary: #ffffff;
+  --bg-error-light: rgba(198, 87, 70, 0.08);
+
+  --text-primary: #2d2a26;
+  --text-secondary: #6d6760;
+  --text-tertiary: #a29c95;
+  --text-quaternary: #c0bab3;
+  --text-muted: var(--text-tertiary);
+
+  --border-color: #e5e5e5;
+  --border-secondary: var(--border-color);
+  --border-primary: #d9d9d9;
+  --border-hover: #cccccc;
+
+  --primary-color: #8b8680;
+  --primary-hover: #7f7a74;
+  --primary-active: #726d67;
+  --primary-contrast: #ffffff;
+
+  --success-color: #10b981;
+  --warning-color: #c65746;
+  --error-color: #c65746;
+  --danger-color: var(--error-color);
+  --info-color: var(--primary-color);
+
+  --warning-bg: rgba(198, 87, 70, 0.12);
+  --warning-border: rgba(198, 87, 70, 0.35);
+  --warning-text: var(--warning-color);
+
+  --success-badge-bg: #d1fae5;
+  --success-badge-text: #065f46;
+  --success-badge-border: #6ee7b7;
+
+  --failure-badge-bg: rgba(198, 87, 70, 0.14);
+  --failure-badge-text: #8a3a30;
+  --failure-badge-border: rgba(198, 87, 70, 0.35);
+
+  --count-badge-bg: rgba(139, 134, 128, 0.18);
+  --count-badge-text: var(--primary-active);
+
+  --shadow: 0 1px 2px 0 rgb(0 0 0 / 0.08);
+  --shadow-lg: 0 10px 18px -3px rgb(0 0 0 / 0.1);
+
+  --radius-md: 8px;
+  --accent-tertiary: var(--bg-tertiary);
+}
+
 // 深色主题（#191919）
 [data-theme='dark'] {
   // 极简暖灰：深色模式（提升对比度与层级）
diff --git a/src/types/common.ts b/src/types/common.ts
index 2ee1624..7b7889b 100644
--- a/src/types/common.ts
+++ b/src/types/common.ts
@@ -2,7 +2,7 @@
  * 通用类型定义
  */
 
-export type Theme = 'light' | 'dark' | 'auto';
+export type Theme = 'light' | 'white' | 'dark' | 'auto';
 
 export type Language = 'zh-CN' | 'en' | 'ru';