diff --git a/app/game-frontend/e2e/directoryLists.spec.ts b/app/game-frontend/e2e/directoryLists.spec.ts
index bcd7b16b..06edbb51 100644
--- a/app/game-frontend/e2e/directoryLists.spec.ts
+++ b/app/game-frontend/e2e/directoryLists.spec.ts
@@ -629,6 +629,10 @@ test('nation directory reuses only the public general-directory row on hover and
         await expect(preview.locator('[data-general-card-id="10"]')).toContainText('대담');
         await expect(preview.locator('[data-directory-tooltip="card-special-domestic-10"]')).toContainText('상재');
         await expect(preview.locator('[data-directory-tooltip="card-special-war-10"]')).toContainText('귀모');
+        await expect(preview.locator('[data-directory-tooltip="card-special-domestic-10"]')).toHaveCSS(
+            'text-decoration-line',
+            'none'
+        );
         await expect(preview).not.toContainText('user-');
         await expect(preview).not.toContainText('secret');
 
diff --git a/app/game-frontend/e2e/inGameMenus.spec.ts b/app/game-frontend/e2e/inGameMenus.spec.ts
index cb5265b8..4172e7c6 100644
--- a/app/game-frontend/e2e/inGameMenus.spec.ts
+++ b/app/game-frontend/e2e/inGameMenus.spec.ts
@@ -1429,6 +1429,7 @@ test('내 정보 항목과 국가 성향은 HTML 리치 툴팁을 마우스와 
     const showWithMouse = async (testId: string, expectedTexts: readonly string[]) => {
         const trigger = page.locator(`[data-rich-tooltip="${testId}"]`);
         await expect(trigger).toHaveAttribute('tabindex', '0');
+        await expect(trigger).toHaveCSS('text-decoration-line', 'none');
         await trigger.hover();
         await expect(visibleTooltip).toHaveCount(1);
         await expect(visibleTooltip).toHaveAttribute('role', 'tooltip');
diff --git a/app/game-frontend/e2e/mainNavigation.spec.ts b/app/game-frontend/e2e/mainNavigation.spec.ts
index 2114ca10..33de76ef 100644
--- a/app/game-frontend/e2e/mainNavigation.spec.ts
+++ b/app/game-frontend/e2e/mainNavigation.spec.ts
@@ -2106,6 +2106,7 @@ test('main cards and command input stay inside their Ref-sized grid slots', asyn
     expect(Math.max(...nationRowHeights) - Math.min(...nationRowHeights)).toBeLessThanOrEqual(0.01);
     const strategicCell = nationCard.locator('.strategic');
     const strategicTooltip = strategicCell.getByRole('tooltip');
+    await expect(strategicCell).toHaveCSS('text-decoration-line', 'none');
     await expect(strategicTooltip).toBeHidden();
     await strategicCell.hover();
     await expect(strategicTooltip).toBeVisible();
diff --git a/app/game-frontend/e2e/npcPossession.spec.ts b/app/game-frontend/e2e/npcPossession.spec.ts
index 8a035639..975e93a7 100644
--- a/app/game-frontend/e2e/npcPossession.spec.ts
+++ b/app/game-frontend/e2e/npcPossession.spec.ts
@@ -266,6 +266,7 @@ test('renders Ref-shaped token cards, preserves keep cooldown and retries posses
     });
     const tooltip = page.locator('.npc-tooltip').first();
     const tooltipPopup = tooltip.getByRole('tooltip');
+    await expect(tooltip).toHaveCSS('text-decoration-line', 'none');
     await expect(tooltipPopup).toBeHidden();
     await tooltip.hover();
     await expect(tooltipPopup).toBeVisible();
diff --git a/app/game-frontend/src/components/directory/DirectoryTooltip.vue b/app/game-frontend/src/components/directory/DirectoryTooltip.vue
index 9106f8e3..9110bbc4 100644
--- a/app/game-frontend/src/components/directory/DirectoryTooltip.vue
+++ b/app/game-frontend/src/components/directory/DirectoryTooltip.vue
@@ -29,8 +29,6 @@ defineProps<{
 }
 .directory-tooltip--enabled {
     cursor: help;
-    text-decoration: underline dotted rgb(150 210 255 / 85%);
-    text-underline-offset: 2px;
 }
 .directory-tooltip--enabled:focus-visible {
     border-radius: 2px;
diff --git a/app/game-frontend/src/components/main/NationBasicCard.vue b/app/game-frontend/src/components/main/NationBasicCard.vue
index 478df508..8435b3b5 100644
--- a/app/game-frontend/src/components/main/NationBasicCard.vue
+++ b/app/game-frontend/src/components/main/NationBasicCard.vue
@@ -284,7 +284,6 @@ const displayChiefName = (chief: NationChief | undefined): string => {
 
 .strategic.has-tooltip {
     overflow: visible;
-    text-decoration: underline dashed red;
 }
 
 .cooldown-tooltip {
diff --git a/app/game-frontend/src/components/ui/RichTooltip.vue b/app/game-frontend/src/components/ui/RichTooltip.vue
index 96edc160..c3d8901f 100644
--- a/app/game-frontend/src/components/ui/RichTooltip.vue
+++ b/app/game-frontend/src/components/ui/RichTooltip.vue
@@ -97,8 +97,6 @@ watch(
 
 .rich-tooltip-trigger--enabled {
     cursor: help;
-    text-decoration: underline dotted rgb(150 210 255 / 85%);
-    text-underline-offset: 2px;
 }
 
 .rich-tooltip-trigger--enabled:focus-visible {
diff --git a/app/game-frontend/src/views/JoinView.vue b/app/game-frontend/src/views/JoinView.vue
index e3b3b64e..2045c02d 100644
--- a/app/game-frontend/src/views/JoinView.vue
+++ b/app/game-frontend/src/views/JoinView.vue
@@ -1733,7 +1733,6 @@ onUnmounted(() => {
 .npc-tooltip {
     position: relative;
     cursor: help;
-    text-decoration: underline dotted;
 }
 
 .npc-tooltip [role='tooltip'] {
diff --git a/docs/frontend-css-architecture.md b/docs/frontend-css-architecture.md
index ef33e083..3a76918b 100644
--- a/docs/frontend-css-architecture.md
+++ b/docs/frontend-css-architecture.md
@@ -36,7 +36,10 @@ available sort keys and placement. NPC·암행부·세력도시는 Ref의 고정
 `내림차순 → 오름차순 → 해제`를 순환하고, 여러 열의 방향과 우선순위를 scoped
 SFC indicator로 표시합니다. 장수 일람의 성격·특기·부상 설명은 많은 행에서
 eager popup instance를 만들지 않는 `DirectoryTooltip.vue` scoped CSS가 소유하며,
-mobile에서는 viewport 가장자리 8px 안의 고정 설명판으로 전환합니다.
+mobile에서는 viewport 가장자리 8px 안의 고정 설명판으로 전환합니다. 게임 내
+tooltip trigger는 hover/focus 동작과 `cursor: help`를 유지하되, tooltip이 있는 모든
+텍스트에 점선 밑줄을 반복하지 않습니다. keyboard `focus-visible` outline은 별도의
+접근성 상태로 유지합니다.
 
 ## Button composition