diff --git a/docs-site/public/_redirects b/docs-site/public/_redirects
index ea15b6c..d2ea8ac 100644
--- a/docs-site/public/_redirects
+++ b/docs-site/public/_redirects
@@ -16,5 +16,7 @@
 /demo/runtime/support/* /demo/runtime/app.html 200
 /demo/runtime/settings /demo/runtime/app.html 200
 /demo/runtime/settings/* /demo/runtime/app.html 200
+/demo/runtime/login /demo/runtime/app.html 200
+/demo/runtime/login/* /demo/runtime/app.html 200
 /demo/runtime/admin /demo/runtime/app.html 200
 /demo/runtime/admin/* /demo/runtime/app.html 200
diff --git a/docs-site/public/demo/demo-shell.js b/docs-site/public/demo/demo-shell.js
index a3bab4e..1dfa0e2 100644
--- a/docs-site/public/demo/demo-shell.js
+++ b/docs-site/public/demo/demo-shell.js
@@ -8,6 +8,7 @@ const stateMocks = new Set([
   "no-subscription",
   "trial",
   "devices",
+  "auth",
 ]);
 const routeMocks = new Set([...stateMocks, "guides", "install"]);
 const params = new URLSearchParams(window.location.search);
@@ -20,7 +21,9 @@ const normalizePath = (value) => {
 };
 
 const normalizeRouteMock = (value) => {
-  const mock = String(value || "").trim().toLowerCase();
+  const mock = String(value || "")
+    .trim()
+    .toLowerCase();
   return routeMocks.has(mock) ? mock : defaultMock;
 };
 
@@ -36,7 +39,8 @@ const routeFromPublicPath = () => {
   if (!lowerPathname.startsWith(`${demoBase}/`)) return "";
 
   const publicRoute = pathname.slice(demoBase.length);
-  if (!publicRoute || publicRoute.toLowerCase().startsWith("/runtime")) return "";
+  if (!publicRoute || publicRoute.toLowerCase().startsWith("/runtime"))
+    return "";
   return normalizePath(publicRoute);
 };
 
@@ -65,6 +69,7 @@ const routeFromParams = () => {
       "devices",
       "support",
       "settings",
+      "login",
     ].includes(screen)
   ) {
     return `/${screen}`;
@@ -73,7 +78,13 @@ const routeFromParams = () => {
 };
 
 let initialRoute = routeFromParams();
-const mockForRoute = (route) => (normalizePath(route) === "/devices" ? "devices" : "");
+const mockForRoute = (route) => {
+  const normalized = normalizePath(route);
+  if (normalized === "/devices") return "devices";
+  if (normalized === "/login" || normalized.startsWith("/login/"))
+    return "auth";
+  return "";
+};
 const initialMock = params.has("mock")
   ? normalizeRouteMock(params.get("mock"))
   : normalizeRouteMock(mockForRoute(initialRoute) || defaultMock);
@@ -84,7 +95,7 @@ if (initialMock === "trial" && initialRoute === "/trial") {
   window.history.replaceState(
     null,
     "",
-    `${normalizedUrl.pathname}${normalizedUrl.search}${normalizedUrl.hash}`
+    `${normalizedUrl.pathname}${normalizedUrl.search}${normalizedUrl.hash}`,
   );
 }
 params.set("mock", initialMock);
@@ -96,8 +107,11 @@ frame.src = `${runtimeBase}/app.html?${params.toString()}${window.location.hash
 
 const routeFromRuntimeUrl = (url) => {
   if (url.origin !== window.location.origin) return "";
-  if (!url.pathname.toLowerCase().startsWith(runtimeBase.toLowerCase())) return "";
-  const runtimePath = normalizePath(url.pathname.slice(runtimeBase.length) || "/home");
+  if (!url.pathname.toLowerCase().startsWith(runtimeBase.toLowerCase()))
+    return "";
+  const runtimePath = normalizePath(
+    url.pathname.slice(runtimeBase.length) || "/home",
+  );
   if (runtimePath === "/app.html") {
     return normalizePath(url.searchParams.get("path") || "/home");
   }
@@ -108,14 +122,20 @@ const materializedRouteFromRuntime = (route) => {
   const normalized = normalizePath(route);
   if (/^\/admin\/users\/-?\d+$/i.test(normalized)) return "/admin/users";
   if (/^\/admin\/payments\/\d+$/i.test(normalized)) return "/admin/payments";
-  if (/^\/admin\/payments\/users\/-?\d+$/i.test(normalized)) return "/admin/payments";
+  if (/^\/admin\/payments\/users\/-?\d+$/i.test(normalized))
+    return "/admin/payments";
   if (/^\/admin\/support\/\d+$/i.test(normalized)) return "/admin/support";
   if (/^\/support\/\d+$/i.test(normalized)) return "/support";
   return normalized;
 };
 
-const publicPathFromRoute = (route) => `${demoBase}${materializedRouteFromRuntime(route)}`;
-const routeForStateMock = (mock) => (mock === "devices" ? "/devices" : "/home");
+const publicPathFromRoute = (route) =>
+  `${demoBase}${materializedRouteFromRuntime(route)}`;
+const routeForStateMock = (mock) => {
+  if (mock === "devices") return "/devices";
+  if (mock === "auth") return "/login";
+  return "/home";
+};
 const runtimeSrc = (route, searchParams = new URLSearchParams()) => {
   const nextParams = new URLSearchParams(searchParams);
   nextParams.delete("screen");
@@ -138,7 +158,9 @@ const syncParentUrlFromFrame = () => {
     nextUrl.pathname = publicPathFromRoute(route);
     nextUrl.searchParams.delete("path");
 
-    const mock = normalizeRouteMock(frameUrl.searchParams.get("mock") || params.get("mock"));
+    const mock = normalizeRouteMock(
+      frameUrl.searchParams.get("mock") || params.get("mock"),
+    );
     if (mock === defaultMock) nextUrl.searchParams.delete("mock");
     else nextUrl.searchParams.set("mock", mock);
     if (stateSelect) stateSelect.value = normalizeStateMock(mock);
@@ -147,7 +169,8 @@ const syncParentUrlFromFrame = () => {
     nextUrl.searchParams.delete("admin_section");
     const nextPath = `${nextUrl.pathname}${nextUrl.search}${nextUrl.hash}`;
     const currentPath = `${window.location.pathname}${window.location.search}${window.location.hash}`;
-    if (nextPath !== currentPath) window.history.replaceState(null, "", nextPath);
+    if (nextPath !== currentPath)
+      window.history.replaceState(null, "", nextPath);
   } catch (_error) {
     // The iframe is same-origin in docs builds; this keeps local oddities harmless.
   }
diff --git a/docs-site/scripts/materialize-demo-routes.mjs b/docs-site/scripts/materialize-demo-routes.mjs
index dd79fa5..7ade645 100644
--- a/docs-site/scripts/materialize-demo-routes.mjs
+++ b/docs-site/scripts/materialize-demo-routes.mjs
@@ -13,6 +13,8 @@ const userRoutes = [
   "devices",
   "support",
   "settings",
+  "login",
+  "login/password",
 ];
 
 const adminRoutes = [
diff --git a/docs-site/src/pages/demo.astro b/docs-site/src/pages/demo.astro
index c89705b..6cb8af1 100644
--- a/docs-site/src/pages/demo.astro
+++ b/docs-site/src/pages/demo.astro
@@ -294,6 +294,7 @@ const docsHref = '/getting-started/demo/';
             <option value="no-subscription">Нет подписки</option>
             <option value="trial">Доступна пробная подписка</option>
             <option value="devices">Лимит и докупка устройств</option>
+            <option value="auth">Вход и регистрация</option>
           </select>
         </label>
         <div class="demo-topbar__actions">
diff --git a/docs-site/src/pages/demo/[...path].astro b/docs-site/src/pages/demo/[...path].astro
index a606f5a..9605cc8 100644
--- a/docs-site/src/pages/demo/[...path].astro
+++ b/docs-site/src/pages/demo/[...path].astro
@@ -2,7 +2,17 @@
 import DemoShell from '../demo.astro';
 
 export function getStaticPaths() {
-  const userRoutes = ['home', 'install', 'trial', 'invite', 'devices', 'support', 'settings'];
+  const userRoutes = [
+    'home',
+    'install',
+    'trial',
+    'invite',
+    'devices',
+    'support',
+    'settings',
+    'login',
+    'login/password',
+  ];
   const adminRoutes = [
     'stats',
     'users',
diff --git a/docs/getting-started/demo.md b/docs/getting-started/demo.md
index 906b033..c58615d 100644
--- a/docs/getting-started/demo.md
+++ b/docs/getting-started/demo.md
@@ -12,6 +12,7 @@
 - [Админка: бэкапы](/demo/admin/backups)
 - [Пробный период](/demo/home?mock=trial)
 - [Докупка устройств](/demo/devices?mock=devices)
+- [Вход и регистрация](/demo/login?mock=auth)
 
 ## Как собирается
 
diff --git a/frontend/src/App.svelte b/frontend/src/App.svelte
index e0ce5bf..f2a5209 100644
--- a/frontend/src/App.svelte
+++ b/frontend/src/App.svelte
@@ -1043,6 +1043,41 @@
     adminMountedTarget = null;
   }
 
+  function currentMockMode() {
+    if (!MOCK) return "";
+    const currentMock = currentSearchParams().get("mock");
+    if (currentMock) return String(currentMock).trim().toLowerCase();
+    const parentMock = docsDemoParentSearchParams()?.get("mock");
+    return String(parentMock || "")
+      .trim()
+      .toLowerCase();
+  }
+
+  function isDemoAuthMock() {
+    return ["auth", "login", "register"].includes(currentMockMode());
+  }
+
+  function prepareDemoAuthState() {
+    const authDemo = MOCK_SOURCE.data?.auth_demo || {};
+    const email = String(authDemo.email || "demo.user@example.com").trim();
+    authStore.update((s) => ({
+      ...s,
+      authStatus: "",
+      authIsError: false,
+      authBusy: false,
+      authResendCooldown: 0,
+      email,
+      emailPassword: String(authDemo.password || ""),
+      pendingEmail: "",
+      emailCode: "",
+      passwordLoginMode: false,
+      passwordLoginFallback: false,
+      loginEmailFieldError: "",
+      loginEmailTooltipOpen: false,
+      telegramLoginBusy: false,
+    }));
+  }
+
   function currentSearchParams() {
     return new URLSearchParams(window.location.search);
   }
@@ -1196,6 +1231,11 @@
       await loadPublicInstall(shareToken);
       return;
     }
+    if (MOCK && isDemoAuthMock()) {
+      prepareDemoAuthState();
+      showLogin();
+      return;
+    }
     await runWebappBoot({
       MOCK,
       setMode: (next) => {
@@ -1243,7 +1283,7 @@
     window.history.replaceState(null, "", `${u.pathname}${qs}${u.hash}`);
   }
 
-  function isPasswordLoginPath(pathname = window.location.pathname) {
+  function isPasswordLoginPath(pathname = routePathnameFromLocation()) {
     return (
       String(pathname || "")
         .replace(/\/+$/, "")
@@ -1253,7 +1293,15 @@
 
   function syncPasswordLoginPath(enabled, replace = false) {
     if (typeof window === "undefined" || window.location.protocol === "file:") return;
-    const targetPath = enabled ? "/login/password" : "/";
+    const targetPath = enabled ? "/login/password" : isDocsDemo ? "/login" : "/";
+    if (isDocsDemo) {
+      const targetRuntimePath = withRoutePrefix(targetPath, routePrefix);
+      if (window.location.pathname === targetRuntimePath) return;
+      const nextUrl = `${targetRuntimePath}${window.location.search}${window.location.hash}`;
+      window.history[replace ? "replaceState" : "pushState"](null, "", nextUrl);
+      cleanDocsDemoRouteQuery();
+      return;
+    }
     if (window.location.pathname === targetPath) return;
     const nextUrl = `${targetPath}${window.location.search}${window.location.hash}`;
     window.history[replace ? "replaceState" : "pushState"](null, "", nextUrl);
diff --git a/frontend/src/lib/webapp/mockApi.js b/frontend/src/lib/webapp/mockApi.js
index 1954eaa..25a62c2 100644
--- a/frontend/src/lib/webapp/mockApi.js
+++ b/frontend/src/lib/webapp/mockApi.js
@@ -21,6 +21,9 @@ let demoPaymentSequence = 20000;
 const demoSettingsChanges = new Map();
 const demoPaymentStatuses = new Map();
 const deviceTopupSaleModes = new Set(["hwid_device", "hwid_devices", "hwid_devices_renewal"]);
+const DEFAULT_DEMO_AUTH_EMAIL = "demo.user@example.com";
+const DEFAULT_DEMO_AUTH_CODE = "123456";
+const DEFAULT_DEMO_AUTH_PASSWORD = "demo-password";
 
 function demoPromos() {
   if (!demoPromosState) demoPromosState = defaultClone(DEMO_DATASET.promos || []);
@@ -75,6 +78,75 @@ function isDeviceTopupSaleMode(value) {
   return deviceTopupSaleModes.has(String(value || "").toLowerCase());
 }
 
+function demoAuthConfig() {
+  return {
+    email: DEFAULT_DEMO_AUTH_EMAIL,
+    code: DEFAULT_DEMO_AUTH_CODE,
+    password: DEFAULT_DEMO_AUTH_PASSWORD,
+    ...(DEV_MOCK.data.auth_demo || {}),
+  };
+}
+
+function applyDemoEmailAuthUser(email) {
+  const normalizedEmail = String(email || demoAuthConfig().email || DEFAULT_DEMO_AUTH_EMAIL)
+    .trim()
+    .toLowerCase();
+  const language = DEV_MOCK.data.user?.language_code || DEV_MOCK.config.language || "ru";
+  DEV_MOCK.data.user = withDemoAvatar(
+    {
+      ...(DEV_MOCK.data.user || {}),
+      id: 910777,
+      user_id: 910777,
+      telegram_id: null,
+      telegram_linked: false,
+      telegram_photo_url: "",
+      avatar_url: "",
+      username: "",
+      first_name: "Email Demo",
+      last_name: "",
+      email: normalizedEmail,
+      email_verified: true,
+      password_auth_enabled: true,
+      is_admin: false,
+      language_code: language,
+      registration_date: "2026-05-28T12:00:00Z",
+      panel_status: "inactive",
+    },
+    160
+  );
+  DEV_MOCK.data.subscription = {
+    ...(DEV_MOCK.data.subscription || {}),
+    active: false,
+    status: "INACTIVE",
+    remaining_text: "Подписка не активна",
+    end_date_text: "",
+    days_left: 0,
+    config_link: null,
+    connect_url: null,
+    panel_short_uuid: "",
+    install_share_token: "",
+    install_share_url: "",
+    traffic_used: "0 B",
+    traffic_used_bytes: 0,
+    traffic_limit: "0 B",
+    traffic_limit_bytes: 0,
+    premium_used: "0 B",
+    premium_used_bytes: 0,
+    premium_limit: "0 B",
+    premium_limit_bytes: 0,
+    can_topup_regular_traffic: false,
+    can_topup_premium_traffic: false,
+    can_topup_devices: false,
+    extra_hwid_devices: 0,
+    max_devices: 0,
+  };
+  DEV_MOCK.data.settings = {
+    ...(DEV_MOCK.data.settings || {}),
+    trial_enabled: true,
+    trial_available: true,
+  };
+}
+
 function demoDeviceTopupPlan(body) {
   const deviceCount = Number(body.device_count || body.months || 0);
   const plans = DEV_MOCK.data.device_topup_options?.plans || [];
@@ -1650,11 +1722,31 @@ export async function mockApi(path, options = {}, context = {}) {
       subscription,
     };
   }
-  if (path === "/auth/email/request") return { ok: true };
+  if (path === "/auth/email/request") {
+    const authDemo = demoAuthConfig();
+    return { ok: true, email_code: authDemo.code };
+  }
   if (path === "/auth/email/verify" || path === "/auth/email/magic") {
+    if (path === "/auth/email/verify") {
+      const body = jsonBody(options);
+      applyDemoEmailAuthUser(body.email);
+    }
     return { ok: true, csrf_token: "local-preview-csrf" };
   }
   if (path === "/auth/email/password") {
+    const body = jsonBody(options);
+    const authDemo = demoAuthConfig();
+    const normalizedEmail = String(body.email || "")
+      .trim()
+      .toLowerCase();
+    const password = String(body.password || "");
+    if (
+      normalizedEmail === String(authDemo.email || DEFAULT_DEMO_AUTH_EMAIL).toLowerCase() &&
+      password === String(authDemo.password || DEFAULT_DEMO_AUTH_PASSWORD)
+    ) {
+      applyDemoEmailAuthUser(normalizedEmail);
+      return { ok: true, csrf_token: "local-preview-csrf" };
+    }
     return { ok: false, error: "password_login_failed", fallback: "email_code" };
   }
   if (path === "/auth/token") {
diff --git a/frontend/src/lib/webapp/previewMock.js b/frontend/src/lib/webapp/previewMock.js
index b11d3b9..7e5e0f5 100644
--- a/frontend/src/lib/webapp/previewMock.js
+++ b/frontend/src/lib/webapp/previewMock.js
@@ -293,6 +293,12 @@ export const DEV_MOCK = {
       language_code: "ru",
       is_admin: true,
     },
+    auth_demo: {
+      enabled: false,
+      email: "demo.user@example.com",
+      code: "123456",
+      password: "demo-password",
+    },
     subscription: {
       active: true,
       status: "ACTIVE",
@@ -551,6 +557,22 @@ export function applyPreviewMock(kind) {
     return;
   }
 
+  if (mode === "auth" || mode === "login" || mode === "register") {
+    DEV_MOCK.data.auth_demo = {
+      ...(DEV_MOCK.data.auth_demo || {}),
+      enabled: true,
+      email: "demo.user@example.com",
+      code: "123456",
+      password: "demo-password",
+    };
+    DEV_MOCK.data.settings.email_auth_enabled = true;
+    DEV_MOCK.config.telegramOAuthClientId = 0;
+    DEV_MOCK.config.telegramLoginBotId = 0;
+    DEV_MOCK.data.settings.trial_enabled = true;
+    DEV_MOCK.data.settings.trial_available = true;
+    return;
+  }
+
   if (mode === "tariffs") {
     DEV_MOCK.data.settings.traffic_mode = false;
     if (DEMO_DATASET.plans?.length) {
diff --git a/frontend/src/lib/webapp/stores/authStore.js b/frontend/src/lib/webapp/stores/authStore.js
index 8545e15..9d34fdb 100644
--- a/frontend/src/lib/webapp/stores/authStore.js
+++ b/frontend/src/lib/webapp/stores/authStore.js
@@ -181,7 +181,10 @@ export function createAuthStore({
       if (referralParam) payload.referral_code = referralParam;
       const response = await publicApi("/auth/email/request", payload);
       if (!response.ok) throw response;
-      state.update((s) => ({ ...s, pendingEmail: normalized, emailCode: "" }));
+      const presetCode = String(response.email_code || response.code || "")
+        .replace(/\D/g, "")
+        .slice(0, 6);
+      state.update((s) => ({ ...s, pendingEmail: normalized, emailCode: presetCode }));
       changeScreen("code");
       setAuthStatus("");
       startCooldownTimer(60);