diff --git a/app/game-frontend/e2e/tournamentBracket.spec.ts b/app/game-frontend/e2e/tournamentBracket.spec.ts
index 84782d31..b0db345f 100644
--- a/app/game-frontend/e2e/tournamentBracket.spec.ts
+++ b/app/game-frontend/e2e/tournamentBracket.spec.ts
@@ -126,7 +126,15 @@ const persistScreenshot = async (page: Page, name: string, fallbackPath: string)
     await page.screenshot({ path: resolve(responsiveArtifactDir, `${name}.webp`), fullPage: true });
 };
 
-const installFixture = async (page: Page, options: { applicationOpen?: boolean; tournamentType?: number } = {}) => {
+const installFixture = async (
+    page: Page,
+    options: {
+        applicationOpen?: boolean;
+        tournamentType?: number;
+        tournamentStage?: number;
+        joinedGroupId?: number;
+    } = {}
+) => {
     let joined = false;
     await page.addInitScript((profile) => {
         window.localStorage.setItem('sammo-game-token', 'ga_tournament_bracket_playwright');
@@ -148,9 +156,11 @@ const installFixture = async (page: Page, options: { applicationOpen?: boolean;
             if (operation === 'general.me') return response({ general: { id: 1, name: names[0] } });
             if (operation === 'tournament.getAdminStatus') return response({ ok: false });
             if (operation === 'tournament.getSnapshot') {
+                const tournamentStage = options.tournamentStage ?? (options.applicationOpen ? 1 : 0);
+                const joinedGroupId = options.joinedGroupId ?? 0;
                 return response({
                     state: {
-                        stage: options.applicationOpen ? 1 : 0,
+                        stage: tournamentStage,
                         phase: 0,
                         type: options.tournamentType ?? 0,
                         auto: false,
@@ -158,7 +168,7 @@ const installFixture = async (page: Page, options: { applicationOpen?: boolean;
                         openMonth: 1,
                         termSeconds: 60,
                         nextAt: '2026-08-02T00:00:00.000Z',
-                        winnerId: 1,
+                        winnerId: tournamentStage === 0 ? 1 : undefined,
                     },
                     participants:
                         options.applicationOpen && !joined
@@ -167,8 +177,10 @@ const installFixture = async (page: Page, options: { applicationOpen?: boolean;
                               ? [
                                     {
                                         ...participants[0],
-                                        groupId: 0,
+                                        groupId: joinedGroupId,
                                         groupNo: 0,
+                                        preliminaryGroupId: joinedGroupId,
+                                        preliminaryGroupNo: 0,
                                         win: 0,
                                         draw: 0,
                                         lose: 0,
@@ -322,20 +334,36 @@ test('desktop bracket connects every real general slot to the next round', async
     await persistScreenshot(page, 'tournament-desktop', testInfo.outputPath('tournament-bracket-desktop.webp'));
 });
 
-test('join refresh shows the assigned preliminary group immediately with accessible controls', async ({ page }) => {
+test('join refresh shows the assigned preliminary group immediately with accessible controls', async ({
+    page,
+}, testInfo) => {
     await page.setViewportSize({ width: 390, height: 844 });
-    await installFixture(page, { applicationOpen: true });
+    await installFixture(page, { applicationOpen: true, joinedGroupId: 5 });
     await page.goto('tournament');
 
     const refresh = page.getByRole('button', { name: '갱신' });
     const join = page.getByRole('button', { name: '참가' });
     const close = page.getByRole('button', { name: '창 닫기' }).first();
     await expect(join).toBeEnabled();
+    await expect(page.getByText('조별 예선 순위')).toBeVisible();
+    await expect(page.getByText('조별 본선 순위')).toHaveCount(0);
+    await expect(page.getByLabel('토너먼트 대진표')).toHaveCount(0);
     await join.click();
 
-    await expect(page.getByRole('status')).toHaveText('참가 신청이 반영되었습니다.');
+    await expect(page.getByRole('status')).toHaveText('참가 신청이 반영되었습니다. 六조에 배정되었습니다.');
     await expect(join).toBeDisabled();
-    await expect(page.locator('.preliminary-grid .general-identity', { hasText: names[0] })).toBeVisible();
+    const preliminaryTabs = page.getByRole('tablist', { name: '예선 조 선택' });
+    await expect(preliminaryTabs.getByRole('tab').nth(5)).toHaveAttribute('aria-selected', 'true');
+    const assignedGroup = page.locator('[data-preliminary-group="5"]');
+    await expect(assignedGroup.locator('.general-identity', { hasText: names[0] })).toBeVisible();
+    const assignedGroupBounds = await assignedGroup.boundingBox();
+    expect(assignedGroupBounds?.y).toBeLessThan(844);
+    expect((assignedGroupBounds?.y ?? 0) + (assignedGroupBounds?.height ?? 0)).toBeGreaterThan(0);
+    await persistScreenshot(
+        page,
+        'tournament-joined-group-mobile',
+        testInfo.outputPath('tournament-joined-group.webp')
+    );
 
     for (const control of [refresh, join, close]) {
         const box = await control.boundingBox();
@@ -349,6 +377,41 @@ test('join refresh shows the assigned preliminary group immediately with accessi
     expect(await page.evaluate(() => document.documentElement.scrollWidth)).toBeLessThanOrEqual(390);
 });
 
+test('desktop join scrolls the assigned preliminary group into view without future sections', async ({
+    page,
+}, testInfo) => {
+    await page.setViewportSize({ width: 1365, height: 900 });
+    await installFixture(page, { applicationOpen: true, joinedGroupId: 7 });
+    await page.goto('tournament');
+
+    await expect(page.getByText('조별 본선 순위')).toHaveCount(0);
+    await expect(page.getByLabel('토너먼트 대진표')).toHaveCount(0);
+    await page.getByRole('button', { name: '참가' }).click();
+
+    await expect(page.getByRole('status')).toHaveText('참가 신청이 반영되었습니다. 八조에 배정되었습니다.');
+    const assignedGroup = page.locator('[data-preliminary-group="7"]');
+    await expect(assignedGroup.locator('.general-identity', { hasText: names[0] })).toBeVisible();
+    const bounds = await assignedGroup.boundingBox();
+    expect(bounds?.y).toBeLessThan(900);
+    expect((bounds?.y ?? 0) + (bounds?.height ?? 0)).toBeGreaterThan(0);
+    await persistScreenshot(
+        page,
+        'tournament-joined-group-desktop',
+        testInfo.outputPath('tournament-joined-group.webp')
+    );
+});
+
+test('final group section appears before the later knockout section', async ({ page }, testInfo) => {
+    await page.setViewportSize({ width: 390, height: 844 });
+    await installFixture(page, { tournamentStage: 3 });
+    await page.goto('tournament');
+
+    await expect(page.getByText('조별 예선 순위')).toBeVisible();
+    await expect(page.getByText('조별 본선 순위')).toBeVisible();
+    await expect(page.getByLabel('토너먼트 대진표')).toHaveCount(0);
+    await persistScreenshot(page, 'tournament-final-stage-mobile', testInfo.outputPath('tournament-final-stage.webp'));
+});
+
 test('mobile bracket exposes every round through tabs with standard horizontal identities', async ({
     page,
 }, testInfo) => {
diff --git a/app/game-frontend/src/utils/tournamentStatus.ts b/app/game-frontend/src/utils/tournamentStatus.ts
index 138501e7..529e8941 100644
--- a/app/game-frontend/src/utils/tournamentStatus.ts
+++ b/app/game-frontend/src/utils/tournamentStatus.ts
@@ -13,3 +13,18 @@ export const tournamentStageNames = [
 ] as const;
 
 export const resolveTournamentStageName = (stage: number): string => tournamentStageNames[stage] ?? '상태 확인 중';
+
+export interface TournamentSectionVisibility {
+    preliminary: boolean;
+    final: boolean;
+    knockout: boolean;
+}
+
+export const resolveTournamentSectionVisibility = (stage: number, winnerId?: number): TournamentSectionVisibility => {
+    const completed = stage === 0 && winnerId !== undefined;
+    return {
+        preliminary: stage >= 1 || completed,
+        final: stage >= 3 || completed,
+        knockout: stage >= 5 || completed,
+    };
+};
diff --git a/app/game-frontend/src/views/TournamentView.vue b/app/game-frontend/src/views/TournamentView.vue
index e21b9b16..c1ea2f71 100644
--- a/app/game-frontend/src/views/TournamentView.vue
+++ b/app/game-frontend/src/views/TournamentView.vue
@@ -1,11 +1,11 @@
 <script setup lang="ts">
 import { formatServerDateTime } from '@sammo-ts/common/time/ServerDateTime';
-import { computed, onMounted, ref } from 'vue';
+import { computed, nextTick, onMounted, ref } from 'vue';
 import TournamentBracket from '../components/tournament/TournamentBracket.vue';
 import TournamentPageHeader from '../components/tournament/TournamentPageHeader.vue';
 import GeneralIdentity from '../components/ui/GeneralIdentity.vue';
 import { trpc } from '../utils/trpc';
-import { resolveTournamentStageName } from '../utils/tournamentStatus';
+import { resolveTournamentSectionVisibility, resolveTournamentStageName } from '../utils/tournamentStatus';
 
 type Snapshot = Awaited<ReturnType<typeof trpc.tournament.getSnapshot.query>>;
 
@@ -18,6 +18,7 @@ const actionMessage = ref<string | null>(null);
 const adminEnabled = ref(false);
 const activeFinalGroup = ref(0);
 const activePreliminaryGroup = ref(0);
+const tournamentContainer = ref<HTMLElement | null>(null);
 
 const typeNames = ['전력전', '통솔전', '일기토', '설전'];
 const typeStatNames = ['종합', '통솔', '무력', '지력'];
@@ -63,6 +64,12 @@ const myBetTotals = computed(() => betting.value?.myTotals as Record<number, num
 const isParticipant = computed(() =>
     (snapshot.value?.participants ?? []).some((participant) => participant.id === myGeneralId.value)
 );
+const sectionVisibility = computed(() =>
+    resolveTournamentSectionVisibility(snapshot.value?.state?.stage ?? 0, snapshot.value?.state?.winnerId)
+);
+const preliminaryGroupIdOf = (participant: Snapshot['participants'][number]): number | undefined =>
+    participant.preliminaryGroupId ??
+    (participant.groupId !== undefined && participant.groupId < 8 ? participant.groupId : undefined);
 const groups = computed(() =>
     Array.from({ length: 8 }, (_, index) =>
         (snapshot.value?.participants ?? [])
@@ -74,10 +81,7 @@ const preliminaryGroups = computed(() =>
     Array.from({ length: 8 }, (_, index) =>
         (snapshot.value?.participants ?? [])
             .filter((participant) => {
-                const groupId =
-                    participant.preliminaryGroupId ??
-                    (participant.groupId !== undefined && participant.groupId < 8 ? participant.groupId : undefined);
-                return groupId === index;
+                return preliminaryGroupIdOf(participant) === index;
             })
             .map((participant) => ({
                 ...participant,
@@ -113,15 +117,38 @@ const currentMatch = computed(() => {
     return matchesAt(state.stage).find((match) => !match.winnerId) ?? matchesAt(state.stage)[state.phase] ?? null;
 });
 
+const revealMyPreliminaryGroup = async (): Promise<number | undefined> => {
+    const participant = (snapshot.value?.participants ?? []).find((entry) => entry.id === myGeneralId.value);
+    if (!participant) return undefined;
+
+    const groupId = preliminaryGroupIdOf(participant);
+    if (groupId === undefined || groupId < 0 || groupId >= groupNames.length) return undefined;
+
+    activePreliminaryGroup.value = groupId;
+    await nextTick();
+    tournamentContainer.value
+        ?.querySelector<HTMLElement>(`[data-preliminary-group="${groupId}"]`)
+        ?.scrollIntoView({ block: 'center' });
+    return groupId;
+};
+
 const join = async () => {
     actionMessage.value = null;
+    let joined = false;
     try {
         await trpc.tournament.join.mutate();
-        actionMessage.value = '참가 신청이 반영되었습니다.';
+        joined = true;
     } catch (value) {
         actionMessage.value = errorText(value);
     } finally {
         await load();
+        if (joined) {
+            const groupId = await revealMyPreliminaryGroup();
+            actionMessage.value =
+                groupId === undefined
+                    ? '참가 신청이 반영되었습니다.'
+                    : `참가 신청이 반영되었습니다. ${groupNames[groupId]}조에 배정되었습니다.`;
+        }
     }
 };
 
@@ -159,7 +186,7 @@ const start = async () => {
 </script>
 
 <template>
-    <main id="tournament-container" class="legacy-page">
+    <main id="tournament-container" ref="tournamentContainer" class="legacy-page">
         <TournamentPageHeader class="bg0" active-page="tournament" title="삼모전 토너먼트" />
 
         <section class="toolbar bg0">
@@ -183,145 +210,152 @@ const start = async () => {
             ({{ resolveTournamentStageName(snapshot?.state?.stage ?? 0) }}, 개막시간 {{ openingTime }}, 경기당
             {{ snapshot?.state?.termSeconds ?? '-' }}초)
         </section>
-        <section class="section-title bg2">16강 승자전</section>
+        <template v-if="sectionVisibility.knockout">
+            <section class="section-title bg2">16강 승자전</section>
 
-        <TournamentBracket
-            class="bg0"
-            :participants="snapshot?.participants ?? []"
-            :matches="snapshot?.matches ?? []"
-            :winner-id="snapshot?.state?.winnerId"
-            :bet-totals="betTotals"
-            :my-bet-totals="myBetTotals"
-            :total-bet="totalBet"
-            :tournament-type="snapshot?.state?.type ?? 0"
-        />
+            <TournamentBracket
+                class="bg0"
+                :participants="snapshot?.participants ?? []"
+                :matches="snapshot?.matches ?? []"
+                :winner-id="snapshot?.state?.winnerId"
+                :bet-totals="betTotals"
+                :my-bet-totals="myBetTotals"
+                :total-bet="totalBet"
+                :tournament-type="snapshot?.state?.type ?? 0"
+            />
 
-        <section v-if="currentMatch" class="fight bg0">
-            <h2>{{ nameOf(currentMatch.attackerId) }} vs {{ nameOf(currentMatch.defenderId) }}</h2>
-            <p v-for="(line, index) in currentMatch.log ?? []" :key="index">{{ line }}</p>
-        </section>
+            <section v-if="currentMatch" class="fight bg0">
+                <h2>{{ nameOf(currentMatch.attackerId) }} vs {{ nameOf(currentMatch.defenderId) }}</h2>
+                <p v-for="(line, index) in currentMatch.log ?? []" :key="index">{{ line }}</p>
+            </section>
+        </template>
 
-        <section class="section-title groups-title bg2">조별 본선 순위</section>
-        <div class="group-tabs bg0" role="tablist" aria-label="본선 조 선택">
-            <button
-                v-for="(groupName, groupIndex) in groupNames"
-                :key="`final-tab-${groupName}`"
-                type="button"
-                role="tab"
-                :aria-selected="activeFinalGroup === groupIndex"
-                :class="{ active: activeFinalGroup === groupIndex }"
-                @click="activeFinalGroup = groupIndex"
-            >
-                {{ groupName }}조
-            </button>
-        </div>
-        <section class="group-grid bg0">
-            <table
-                v-for="(group, groupIndex) in groups"
-                :key="groupIndex"
-                :class="{ 'mobile-active': activeFinalGroup === groupIndex }"
-            >
-                <caption>
-                    {{
-                        groupNames[groupIndex]
-                    }}조
-                </caption>
-                <thead>
-                    <tr>
-                        <th>순</th>
-                        <th>장수</th>
-                        <th>{{ typeStatNames[snapshot?.state?.type ?? 0] }}</th>
-                        <th>경</th>
-                        <th>승</th>
-                        <th>무</th>
-                        <th>패</th>
-                        <th>점</th>
-                        <th>득</th>
-                    </tr>
-                </thead>
-                <tbody>
-                    <tr v-for="rowIndex in 4" :key="rowIndex">
-                        <td>{{ rowIndex }}</td>
-                        <td class="general-cell">
-                            <GeneralIdentity
-                                v-if="group[rowIndex - 1]"
-                                :name="group[rowIndex - 1]!.name"
-                                :picture="group[rowIndex - 1]!.picture"
-                                :image-server="group[rowIndex - 1]!.imageServer"
-                            />
-                        </td>
-                        <td>{{ statOf(group[rowIndex - 1]) }}</td>
-                        <td>{{ gamesOf(group[rowIndex - 1]) }}</td>
-                        <td>{{ group[rowIndex - 1]?.win ?? '' }}</td>
-                        <td>{{ group[rowIndex - 1]?.draw ?? '' }}</td>
-                        <td>{{ group[rowIndex - 1]?.lose ?? '' }}</td>
-                        <td>{{ pointsOf(group[rowIndex - 1]) }}</td>
-                        <td>{{ group[rowIndex - 1]?.gl ?? '' }}</td>
-                    </tr>
-                </tbody>
-            </table>
-        </section>
+        <template v-if="sectionVisibility.final">
+            <section class="section-title groups-title bg2">조별 본선 순위</section>
+            <div class="group-tabs bg0" role="tablist" aria-label="본선 조 선택">
+                <button
+                    v-for="(groupName, groupIndex) in groupNames"
+                    :key="`final-tab-${groupName}`"
+                    type="button"
+                    role="tab"
+                    :aria-selected="activeFinalGroup === groupIndex"
+                    :class="{ active: activeFinalGroup === groupIndex }"
+                    @click="activeFinalGroup = groupIndex"
+                >
+                    {{ groupName }}조
+                </button>
+            </div>
+            <section class="group-grid bg0">
+                <table
+                    v-for="(group, groupIndex) in groups"
+                    :key="groupIndex"
+                    :class="{ 'mobile-active': activeFinalGroup === groupIndex }"
+                >
+                    <caption>
+                        {{
+                            groupNames[groupIndex]
+                        }}조
+                    </caption>
+                    <thead>
+                        <tr>
+                            <th>순</th>
+                            <th>장수</th>
+                            <th>{{ typeStatNames[snapshot?.state?.type ?? 0] }}</th>
+                            <th>경</th>
+                            <th>승</th>
+                            <th>무</th>
+                            <th>패</th>
+                            <th>점</th>
+                            <th>득</th>
+                        </tr>
+                    </thead>
+                    <tbody>
+                        <tr v-for="rowIndex in 4" :key="rowIndex">
+                            <td>{{ rowIndex }}</td>
+                            <td class="general-cell">
+                                <GeneralIdentity
+                                    v-if="group[rowIndex - 1]"
+                                    :name="group[rowIndex - 1]!.name"
+                                    :picture="group[rowIndex - 1]!.picture"
+                                    :image-server="group[rowIndex - 1]!.imageServer"
+                                />
+                            </td>
+                            <td>{{ statOf(group[rowIndex - 1]) }}</td>
+                            <td>{{ gamesOf(group[rowIndex - 1]) }}</td>
+                            <td>{{ group[rowIndex - 1]?.win ?? '' }}</td>
+                            <td>{{ group[rowIndex - 1]?.draw ?? '' }}</td>
+                            <td>{{ group[rowIndex - 1]?.lose ?? '' }}</td>
+                            <td>{{ pointsOf(group[rowIndex - 1]) }}</td>
+                            <td>{{ group[rowIndex - 1]?.gl ?? '' }}</td>
+                        </tr>
+                    </tbody>
+                </table>
+            </section>
+        </template>
 
-        <section class="section-title groups-title bg2">조별 예선 순위</section>
-        <div class="group-tabs bg0" role="tablist" aria-label="예선 조 선택">
-            <button
-                v-for="(groupName, groupIndex) in groupNames"
-                :key="`preliminary-tab-${groupName}`"
-                type="button"
-                role="tab"
-                :aria-selected="activePreliminaryGroup === groupIndex"
-                :class="{ active: activePreliminaryGroup === groupIndex }"
-                @click="activePreliminaryGroup = groupIndex"
-            >
-                {{ groupName }}조
-            </button>
-        </div>
-        <section class="group-grid preliminary-grid bg0">
-            <table
-                v-for="(group, groupIndex) in preliminaryGroups"
-                :key="`preliminary-${groupIndex}`"
-                :class="{ 'mobile-active': activePreliminaryGroup === groupIndex }"
-            >
-                <caption>
-                    {{
-                        groupNames[groupIndex]
-                    }}조
-                </caption>
-                <thead>
-                    <tr>
-                        <th>순</th>
-                        <th>장수</th>
-                        <th>{{ typeStatNames[snapshot?.state?.type ?? 0] }}</th>
-                        <th>경</th>
-                        <th>승</th>
-                        <th>무</th>
-                        <th>패</th>
-                        <th>점</th>
-                        <th>득</th>
-                    </tr>
-                </thead>
-                <tbody>
-                    <tr v-for="rowIndex in 8" :key="rowIndex">
-                        <td>{{ rowIndex }}</td>
-                        <td class="general-cell">
-                            <GeneralIdentity
-                                v-if="group[rowIndex - 1]"
-                                :name="group[rowIndex - 1]!.name"
-                                :picture="group[rowIndex - 1]!.picture"
-                                :image-server="group[rowIndex - 1]!.imageServer"
-                            />
-                        </td>
-                        <td>{{ statOf(group[rowIndex - 1]) }}</td>
-                        <td>{{ gamesOf(group[rowIndex - 1]) }}</td>
-                        <td>{{ group[rowIndex - 1]?.win ?? '' }}</td>
-                        <td>{{ group[rowIndex - 1]?.draw ?? '' }}</td>
-                        <td>{{ group[rowIndex - 1]?.lose ?? '' }}</td>
-                        <td>{{ pointsOf(group[rowIndex - 1]) }}</td>
-                        <td>{{ group[rowIndex - 1]?.gl ?? '' }}</td>
-                    </tr>
-                </tbody>
-            </table>
-        </section>
+        <template v-if="sectionVisibility.preliminary">
+            <section class="section-title groups-title bg2">조별 예선 순위</section>
+            <div class="group-tabs bg0" role="tablist" aria-label="예선 조 선택">
+                <button
+                    v-for="(groupName, groupIndex) in groupNames"
+                    :key="`preliminary-tab-${groupName}`"
+                    type="button"
+                    role="tab"
+                    :aria-selected="activePreliminaryGroup === groupIndex"
+                    :class="{ active: activePreliminaryGroup === groupIndex }"
+                    @click="activePreliminaryGroup = groupIndex"
+                >
+                    {{ groupName }}조
+                </button>
+            </div>
+            <section class="group-grid preliminary-grid bg0">
+                <table
+                    v-for="(group, groupIndex) in preliminaryGroups"
+                    :key="`preliminary-${groupIndex}`"
+                    :data-preliminary-group="groupIndex"
+                    :class="{ 'mobile-active': activePreliminaryGroup === groupIndex }"
+                >
+                    <caption>
+                        {{
+                            groupNames[groupIndex]
+                        }}조
+                    </caption>
+                    <thead>
+                        <tr>
+                            <th>순</th>
+                            <th>장수</th>
+                            <th>{{ typeStatNames[snapshot?.state?.type ?? 0] }}</th>
+                            <th>경</th>
+                            <th>승</th>
+                            <th>무</th>
+                            <th>패</th>
+                            <th>점</th>
+                            <th>득</th>
+                        </tr>
+                    </thead>
+                    <tbody>
+                        <tr v-for="rowIndex in 8" :key="rowIndex">
+                            <td>{{ rowIndex }}</td>
+                            <td class="general-cell">
+                                <GeneralIdentity
+                                    v-if="group[rowIndex - 1]"
+                                    :name="group[rowIndex - 1]!.name"
+                                    :picture="group[rowIndex - 1]!.picture"
+                                    :image-server="group[rowIndex - 1]!.imageServer"
+                                />
+                            </td>
+                            <td>{{ statOf(group[rowIndex - 1]) }}</td>
+                            <td>{{ gamesOf(group[rowIndex - 1]) }}</td>
+                            <td>{{ group[rowIndex - 1]?.win ?? '' }}</td>
+                            <td>{{ group[rowIndex - 1]?.draw ?? '' }}</td>
+                            <td>{{ group[rowIndex - 1]?.lose ?? '' }}</td>
+                            <td>{{ pointsOf(group[rowIndex - 1]) }}</td>
+                            <td>{{ group[rowIndex - 1]?.gl ?? '' }}</td>
+                        </tr>
+                    </tbody>
+                </table>
+            </section>
+        </template>
 
         <div class="legacy-bracket-table-signature" hidden>
             <table v-for="(rowCount, tableIndex) in [11, 11, 11, 10]" :key="tableIndex">
diff --git a/app/game-frontend/test/tournamentStatus.test.ts b/app/game-frontend/test/tournamentStatus.test.ts
index 1a3a198c..51d9c626 100644
--- a/app/game-frontend/test/tournamentStatus.test.ts
+++ b/app/game-frontend/test/tournamentStatus.test.ts
@@ -1,6 +1,6 @@
 import assert from 'node:assert/strict';
 import { describe, it } from 'node:test';
-import { resolveTournamentStageName } from '../src/utils/tournamentStatus.ts';
+import { resolveTournamentSectionVisibility, resolveTournamentStageName } from '../src/utils/tournamentStatus.ts';
 
 void describe('tournament status labels', () => {
     void it('describes inactive and active tournament stages', () => {
@@ -14,4 +14,32 @@ void describe('tournament status labels', () => {
         assert.equal(resolveTournamentStageName(11), '상태 확인 중');
         assert.equal(resolveTournamentStageName(-1), '상태 확인 중');
     });
+
+    void it('reveals tournament sections only after their stage begins and retains completed results', () => {
+        assert.deepEqual(resolveTournamentSectionVisibility(0), {
+            preliminary: false,
+            final: false,
+            knockout: false,
+        });
+        assert.deepEqual(resolveTournamentSectionVisibility(1), {
+            preliminary: true,
+            final: false,
+            knockout: false,
+        });
+        assert.deepEqual(resolveTournamentSectionVisibility(3), {
+            preliminary: true,
+            final: true,
+            knockout: false,
+        });
+        assert.deepEqual(resolveTournamentSectionVisibility(5), {
+            preliminary: true,
+            final: true,
+            knockout: true,
+        });
+        assert.deepEqual(resolveTournamentSectionVisibility(0, 7), {
+            preliminary: true,
+            final: true,
+            knockout: true,
+        });
+    });
 });