diff --git a/src/components/layout/Sidebar.tsx b/src/components/layout/Sidebar.tsx
index 1878470..0ea83b3 100644
--- a/src/components/layout/Sidebar.tsx
+++ b/src/components/layout/Sidebar.tsx
@@ -100,7 +100,6 @@ export function Sidebar() {
         {sidebarOpen && (
           <div className="absolute bottom-4 left-4 right-4">
             <div className="rounded-lg bg-gray-50 dark:bg-gray-700/50 p-4">
-              <div className="text-xs text-gray-500 dark:text-gray-400 mb-1">PMBOK 第6版</div>
               <div className="text-sm font-medium text-gray-700 dark:text-gray-300">
                 49个过程 · 10大知识领域
               </div>
diff --git a/src/pages/HomePage.tsx b/src/pages/HomePage.tsx
index dbba6cc..272475d 100644
--- a/src/pages/HomePage.tsx
+++ b/src/pages/HomePage.tsx
@@ -100,13 +100,12 @@ export function HomePage() {
         variants={containerVariants}
         initial="hidden"
         animate="visible"
-        className="grid grid-cols-2 md:grid-cols-4 gap-4"
+        className="grid grid-cols-2 md:grid-cols-3 gap-4"
       >
         {[
           { label: '知识领域', value: stats.knowledgeAreaCount, color: 'text-indigo-600' },
           { label: '过程组', value: stats.processGroupCount, color: 'text-blue-600' },
           { label: '项目过程', value: stats.processCount, color: 'text-emerald-600' },
-          { label: '工具技术', value: stats.toolCount, color: 'text-amber-600' },
         ].map((stat) => (
           <motion.div
             key={stat.label}
diff --git a/src/pages/KnowledgeAreasPage.tsx b/src/pages/KnowledgeAreasPage.tsx
index 7a643e0..119ed2c 100644
--- a/src/pages/KnowledgeAreasPage.tsx
+++ b/src/pages/KnowledgeAreasPage.tsx
@@ -146,7 +146,7 @@ export function KnowledgeAreasPage() {
     <div className="space-y-4">
       <div>
         <h1 className="text-xl font-bold text-gray-900 dark:text-white">知识领域</h1>
-        <p className="text-sm text-gray-500 dark:text-gray-400">PMBOK第6版定义的10大项目管理知识领域</p>
+        <p className="text-sm text-gray-500 dark:text-gray-400">10大项目管理知识领域</p>
       </div>
 
       <motion.div
diff --git a/src/pages/ProcessGroupsPage.tsx b/src/pages/ProcessGroupsPage.tsx
index 8a99fff..b9be11d 100644
--- a/src/pages/ProcessGroupsPage.tsx
+++ b/src/pages/ProcessGroupsPage.tsx
@@ -99,7 +99,7 @@ export function ProcessGroupsPage() {
     <div className="space-y-4">
       <div>
         <h1 className="text-xl font-bold text-gray-900 dark:text-white">过程组</h1>
-        <p className="text-sm text-gray-500 dark:text-gray-400">PMBOK第6版定义的5大项目管理过程组</p>
+        <p className="text-sm text-gray-500 dark:text-gray-400">5大项目管理过程组</p>
       </div>
 
       <motion.div variants={containerVariants} initial="hidden" animate="visible" className="space-y-2">
diff --git a/src/pages/SettingsPage.tsx b/src/pages/SettingsPage.tsx
index dbd5599..b655cbe 100644
--- a/src/pages/SettingsPage.tsx
+++ b/src/pages/SettingsPage.tsx
@@ -78,7 +78,6 @@ export function SettingsPage() {
         <h2 className="font-semibold text-gray-900 dark:text-white mb-4">关于 ITTOView</h2>
         <div className="space-y-2 text-sm text-gray-500 dark:text-gray-400">
           <p>版本：1.0.0</p>
-          <p>基于 PMBOK 第6版</p>
           <p>包含 49 个项目管理过程的完整 ITTO 数据</p>
         </div>
       </motion.div>