diff --git a/app/resources/js/views/auth/LoginView.vue b/app/resources/js/views/auth/LoginView.vue
index 758c2dcc..d49fe5ab 100644
--- a/app/resources/js/views/auth/LoginView.vue
+++ b/app/resources/js/views/auth/LoginView.vue
@@ -104,7 +104,18 @@ async function handleSubmit() {
                 <span class="text-caption text-medium-emphasis">или</span>
             </v-divider>
 
-            <v-btn block size="large" variant="outlined"> Войти через Yandex 360 </v-btn>
+            <v-tooltip
+                text="Вход через Yandex 360 станет доступен после регистрации юр. лица (Б-1)."
+                location="top"
+            >
+                <template #activator="{ props }">
+                    <div v-bind="props" class="yandex-sso-wrap">
+                        <v-btn block size="large" variant="outlined" disabled>
+                            Войти через Yandex 360
+                        </v-btn>
+                    </div>
+                </template>
+            </v-tooltip>
         </v-form>
     </v-card>
 </template>
@@ -126,4 +137,8 @@ async function handleSubmit() {
     flex-direction: column;
     gap: 4px;
 }
+
+.yandex-sso-wrap {
+    width: 100%;
+}
 </style>
diff --git a/app/tests/Frontend/LoginView.spec.ts b/app/tests/Frontend/LoginView.spec.ts
index c95cbdb5..50f1f462 100644
--- a/app/tests/Frontend/LoginView.spec.ts
+++ b/app/tests/Frontend/LoginView.spec.ts
@@ -80,4 +80,11 @@ describe('LoginView.vue', () => {
         expect(alert.text()).toContain('10 мин');
         expect(alert.text()).toContain('Слишком много попыток');
     });
+
+    it('A1: SSO Yandex 360 — кнопка disabled до подключения Б-1', async () => {
+        const wrapper = await mountLoginView();
+        const ssoBtn = wrapper.findAll('button').find((b) => b.text().includes('Yandex 360'));
+        expect(ssoBtn).toBeDefined();
+        expect(ssoBtn!.classes()).toContain('v-btn--disabled');
+    });
 });