diff --git a/src/renderer/src/KnowledgeWorkspace.test.tsx b/src/renderer/src/KnowledgeWorkspace.test.tsx
index f6eb556..2325ce5 100644
--- a/src/renderer/src/KnowledgeWorkspace.test.tsx
+++ b/src/renderer/src/KnowledgeWorkspace.test.tsx
@@ -422,6 +422,17 @@ describe('KnowledgeWorkspace', () => {
     expect(screen.queryByTitle('D:\\Private\\架构说明.md')).not
       .toBeInTheDocument()
     expect(screen.queryByTitle('D:\\Private\\产品手册')).not.toBeInTheDocument()
+    const syncSource = screen.getByRole('button', {
+      name: '同步 产品手册'
+    })
+    const removeSource = screen.getByRole('button', {
+      name: '移除来源 产品手册'
+    })
+    expect(syncSource.parentElement).toBe(removeSource.parentElement)
+    expect(syncSource.parentElement).toHaveClass(
+      'knowledge-source-row__actions'
+    )
+    expect(removeSource).not.toHaveStyle({ padding: '8px' })
 
     fireEvent.click(screen.getByRole('tab', { name: '知识图谱' }))
     fireEvent.change(screen.getByLabelText('选择图谱实体'), {
diff --git a/src/renderer/src/KnowledgeWorkspace.tsx b/src/renderer/src/KnowledgeWorkspace.tsx
index 81cf2dd..6fa1677 100644
--- a/src/renderer/src/KnowledgeWorkspace.tsx
+++ b/src/renderer/src/KnowledgeWorkspace.tsx
@@ -1300,7 +1300,7 @@ function DocumentsView({
                     onClick={() =>
                       void run(source.id, () => onRemoveSource(source.id))
                     }
-                    style={{ ...styles.button, padding: 8 }}
+                    style={styles.button}
                     type="button"
                   >
                     <Trash2 aria-hidden="true" size={14} />
diff --git a/src/renderer/src/WorkspacePrimitives.test.tsx b/src/renderer/src/WorkspacePrimitives.test.tsx
index c7d4efa..d33883a 100644
--- a/src/renderer/src/WorkspacePrimitives.test.tsx
+++ b/src/renderer/src/WorkspacePrimitives.test.tsx
@@ -108,6 +108,15 @@ describe('WorkspacePrimitives', () => {
     expect(stylesheet).toMatch(
       /\.page-tabs\s*\{[^}]*overflow-x:\s*auto;[^}]*flex-wrap:\s*nowrap;/u
     )
+    expect(stylesheet).toMatch(
+      /\.knowledge-graph__detail > \.page-tabs--segmented\s*\{[^}]*min-height:\s*36px;[^}]*overflow:\s*hidden;[^}]*flex:\s*0 0 auto;/u
+    )
+    expect(stylesheet).toMatch(
+      /\.knowledge-graph__detail > \.page-tabs--segmented \.page-tabs__tab\s*\{[^}]*min-width:\s*0;[^}]*overflow:\s*hidden;[^}]*flex:\s*1;/u
+    )
+    expect(stylesheet).toMatch(
+      /\.knowledge-source-row__actions > button\s*\{[^}]*height:\s*var\(--control-height\);[^}]*min-height:\s*var\(--control-height\);[^}]*padding:\s*0 var\(--space-3\);[^}]*align-self:\s*center;/u
+    )
     expect(stylesheet).not.toContain(
       '.heartbeat-center > .page-tabs {\n    display: grid;'
     )
diff --git a/src/renderer/src/styles.css b/src/renderer/src/styles.css
index 252c825..4aec9ce 100644
--- a/src/renderer/src/styles.css
+++ b/src/renderer/src/styles.css
@@ -6686,6 +6686,13 @@ details.settings-section > :not(summary) + :not(summary) {
   gap: 8px;
 }
 
+.knowledge-source-row__actions > button {
+  height: var(--control-height);
+  min-height: var(--control-height);
+  padding: 0 var(--space-3);
+  align-self: center;
+}
+
 .knowledge-documents__url-form {
   display: grid;
   grid-template-columns: minmax(0, 1fr) auto auto;
@@ -6804,20 +6811,27 @@ details.settings-section > :not(summary) + :not(summary) {
 }
 
 .knowledge-graph__detail > .page-tabs--segmented {
-  width: calc(100% - (var(--space-4) * 2));
+  width: auto;
+  min-height: 36px;
   margin: var(--space-4);
+  overflow: hidden;
+  align-self: stretch;
+  flex: 0 0 auto;
 }
 
 .knowledge-graph__detail > .page-tabs--segmented .page-tabs__tab {
   min-width: 0;
+  overflow: hidden;
   flex: 1;
   justify-content: center;
+  text-overflow: ellipsis;
 }
 
 .knowledge-graph__detail-panel {
   min-height: 0;
   padding: 0 var(--space-4) var(--space-4);
   overflow-y: auto;
+  flex: 1 1 auto;
   scrollbar-gutter: stable;
 }