diff --git a/apps/api-gateway/src/controllers/family.controller.ts b/apps/api-gateway/src/controllers/family.controller.ts
index 686d311..efc91a0 100644
--- a/apps/api-gateway/src/controllers/family.controller.ts
+++ b/apps/api-gateway/src/controllers/family.controller.ts
@@ -5,7 +5,7 @@ import { firstValueFrom } from 'rxjs';
 import { map } from 'rxjs/operators';
 import { CoreGrpcService } from '../core-grpc.service';
 import { getAuthorizedUserId } from '../document-access';
-import { AddFamilyMemberDto, CreateFamilyGroupDto, LeaveFamilyGroupDto, RespondFamilyInviteDto, SendFamilyInviteDto, UpdateFamilyGroupDto } from '../dto/identity.dto';
+import { AddFamilyMemberDto, CreateFamilyGroupDto, LeaveFamilyGroupDto, RespondFamilyInviteDto, SendFamilyInviteDto, TransferFamilyOwnershipDto, UpdateFamilyGroupDto } from '../dto/identity.dto';
 
 @ApiTags('Семья')
 @ApiBearerAuth()
@@ -108,6 +108,23 @@ export class FamilyController {
     );
   }
 
+  @Post('groups/:groupId/transfer-ownership')
+  @ApiOperation({ summary: 'Передать управление семейной группой' })
+  async transferOwnership(
+    @Headers('authorization') authorization: string | undefined,
+    @Param('groupId') groupId: string,
+    @Body() dto: TransferFamilyOwnershipDto
+  ) {
+    const requesterId = await this.auth(authorization);
+    return firstValueFrom(
+      this.core.family.TransferFamilyOwnership({
+        requesterId,
+        groupId,
+        newOwnerUserId: dto.newOwnerUserId
+      })
+    );
+  }
+
   @Get('groups/:groupId/invite-search')
   @ApiOperation({ summary: 'Поиск пользователей для приглашения в семью' })
   async searchInviteUsers(
diff --git a/apps/api-gateway/src/dto/identity.dto.ts b/apps/api-gateway/src/dto/identity.dto.ts
index 0bcb37f..e073f96 100644
--- a/apps/api-gateway/src/dto/identity.dto.ts
+++ b/apps/api-gateway/src/dto/identity.dto.ts
@@ -161,3 +161,10 @@ export class LeaveFamilyGroupDto {
   newOwnerUserId?: string;
 }
 
+export class TransferFamilyOwnershipDto {
+  @ApiProperty({ description: 'ID пользователя, которому передаётся управление семьёй' })
+  @IsString({ message: 'ID нового главы семьи должен быть строкой' })
+  @IsNotEmpty({ message: 'Укажите нового главу семьи' })
+  newOwnerUserId!: string;
+}
+
diff --git a/apps/frontend/app/admin/users/page.tsx b/apps/frontend/app/admin/users/page.tsx
index b12a875..85046c5 100644
--- a/apps/frontend/app/admin/users/page.tsx
+++ b/apps/frontend/app/admin/users/page.tsx
@@ -324,7 +324,7 @@ export default function AdminUsersPage() {
         </div>
       </div>
 
-      <div className="overflow-hidden rounded-[24px] border border-[#eceef4] bg-white">
+      <div className="overflow-x-auto rounded-[24px] border border-[#eceef4] bg-white">
         {loading ? (
           <div className="flex items-center justify-center gap-2 py-16 text-[#667085]">
             <Loader2 className="h-5 w-5 animate-spin" />
diff --git a/apps/frontend/app/documents/page.tsx b/apps/frontend/app/documents/page.tsx
index d8b3030..aa64619 100644
--- a/apps/frontend/app/documents/page.tsx
+++ b/apps/frontend/app/documents/page.tsx
@@ -52,7 +52,7 @@ export default function DocumentsPage() {
 
   return (
     <IdShell active="/documents" wide>
-      <h1 className="text-3xl font-medium tracking-tight">Документы</h1>
+      <h1 className="text-2xl font-medium tracking-tight sm:text-3xl">Документы</h1>
       <p className="mt-1 text-sm text-[#667085]">Храните документы и заполняйте формы — ID подставит данные там, где вы разрешите.</p>
 
       <div className="mt-6 overflow-hidden rounded-[28px] bg-[linear-gradient(135deg,#fff4f4,#fff8ef)] p-5">
diff --git a/apps/frontend/app/family/[groupId]/page.tsx b/apps/frontend/app/family/[groupId]/page.tsx
index 0c6d9b5..2744a47 100644
--- a/apps/frontend/app/family/[groupId]/page.tsx
+++ b/apps/frontend/app/family/[groupId]/page.tsx
@@ -19,7 +19,7 @@ export default function FamilyGroupPage({ params }: { params: Promise<{ groupId:
   const { groupId } = use(params);
 
   return (
-    <IdShell active="/family" wide>
+    <IdShell active="/family" fullBleed>
       <FamilyGroupPageContent groupId={groupId} />
     </IdShell>
   );
diff --git a/apps/frontend/app/family/page.tsx b/apps/frontend/app/family/page.tsx
index a8d6a47..fe20408 100644
--- a/apps/frontend/app/family/page.tsx
+++ b/apps/frontend/app/family/page.tsx
@@ -65,12 +65,12 @@ export default function FamilyPage() {
   return (
     <IdShell active="/family" wide>
       <p className="text-sm text-[#667085]">Семья</p>
-      <h1 className="text-4xl font-medium tracking-tight">Семейный доступ</h1>
-      <p className="mt-2 text-[#667085]">Приглашайте близких, общайтесь в чатах и управляйте семейной группой.</p>
+      <h1 className="text-2xl font-medium tracking-tight sm:text-4xl">Семейный доступ</h1>
+      <p className="mt-2 text-sm text-[#667085] sm:text-base">Приглашайте близких, общайтесь в чатах и управляйте семейной группой.</p>
 
-      <div className="mt-8 flex gap-3">
-        <Input value={name} onChange={(event) => setName(event.target.value)} placeholder="Название семьи" />
-        <Button onClick={() => void createGroup()} disabled={creating || !name.trim()}>
+      <div className="mt-6 flex flex-col gap-3 sm:mt-8 sm:flex-row">
+        <Input value={name} onChange={(event) => setName(event.target.value)} placeholder="Название семьи" className="min-w-0 flex-1" />
+        <Button className="shrink-0" onClick={() => void createGroup()} disabled={creating || !name.trim()}>
           {creating ? 'Создаём...' : (<><Plus className="h-4 w-4" />Создать</>)}
         </Button>
       </div>
diff --git a/apps/frontend/app/globals.css b/apps/frontend/app/globals.css
index 743cefd..020e43b 100644
--- a/apps/frontend/app/globals.css
+++ b/apps/frontend/app/globals.css
@@ -22,6 +22,11 @@ body {
   background: var(--background);
   color: var(--foreground);
   font-family: Arial, Helvetica, sans-serif;
+  overflow-x: hidden;
+}
+
+html {
+  overflow-x: hidden;
 }
 
 .rdp-root {
diff --git a/apps/frontend/app/security/page.tsx b/apps/frontend/app/security/page.tsx
index 2175ee1..ef27619 100644
--- a/apps/frontend/app/security/page.tsx
+++ b/apps/frontend/app/security/page.tsx
@@ -335,7 +335,7 @@ export default function SecurityPage() {
   return (
     <IdShell active="/security">
       <p className="text-sm text-[#667085]">Безопасность</p>
-      <h1 className="text-4xl font-medium tracking-tight">Устройства</h1>
+      <h1 className="text-2xl font-medium tracking-tight sm:text-4xl">Устройства</h1>
       <p className="mt-2 max-w-[460px] text-base">На них вы вошли в ID и получаете уведомления безопасности от сервисов</p>
 
       <div className="mt-8 space-y-2">
diff --git a/apps/frontend/components/family/family-group-view.tsx b/apps/frontend/components/family/family-group-view.tsx
index 28a1f2f..809d047 100644
--- a/apps/frontend/components/family/family-group-view.tsx
+++ b/apps/frontend/components/family/family-group-view.tsx
@@ -4,6 +4,7 @@ import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
 import { useRouter } from 'next/navigation';
 import {
   ArrowLeft,
+  ArrowRightLeft,
   BarChart3,
   CalendarDays,
   Camera,
@@ -95,6 +96,7 @@ import {
   setChatRoomPinned,
   setChatRoomMuted,
   toggleChatMessageReaction,
+  transferFamilyOwnership,
   updateFamilyGroup,
   uploadMediaObject,
   voteChatPoll
@@ -281,7 +283,9 @@ export function FamilyGroupView({ groupId }: { groupId: string }) {
   const [presenceMembers, setPresenceMembers] = useState<FamilyPresenceMember[]>([]);
   const [deleteFamilyDialogOpen, setDeleteFamilyDialogOpen] = useState(false);
   const [leaveFamilyDialogOpen, setLeaveFamilyDialogOpen] = useState(false);
+  const [transferOwnershipDialogOpen, setTransferOwnershipDialogOpen] = useState(false);
   const [leavingFamily, setLeavingFamily] = useState(false);
+  const [transferringOwnership, setTransferringOwnership] = useState(false);
   const [selectedNewOwnerUserId, setSelectedNewOwnerUserId] = useState<string | null>(null);
   const [deletingFamily, setDeletingFamily] = useState(false);
   const [deleteMessagesDialogOpen, setDeleteMessagesDialogOpen] = useState(false);
@@ -396,6 +400,7 @@ export function FamilyGroupView({ groupId }: { groupId: string }) {
   );
   const ownerMustTransfer = Boolean(isFamilyOwner && otherHumanMembers.length > 0);
   const ownerLeaveDeletesFamily = Boolean(isFamilyOwner && otherHumanMembers.length === 0);
+  const mobileChatOpen = Boolean(activeRoomId);
   const isChatCreator = activeRoom?.createdById === user?.id;
   const canManageChatMembers = Boolean(isFamilyOwner || isChatCreator || activeRoomIsBot);
   const canManageActiveBot = Boolean(
@@ -875,6 +880,30 @@ export function FamilyGroupView({ groupId }: { groupId: string }) {
     setLeaveFamilyDialogOpen(true);
   }
 
+  function openTransferOwnershipDialog() {
+    setSelectedNewOwnerUserId(otherHumanMembers[0]?.userId ?? null);
+    setTransferOwnershipDialogOpen(true);
+  }
+
+  async function confirmTransferOwnership() {
+    if (!token || !selectedNewOwnerUserId) {
+      showToast('Выберите нового главу семьи');
+      return;
+    }
+    setTransferringOwnership(true);
+    try {
+      const updated = await transferFamilyOwnership(groupId, selectedNewOwnerUserId, token);
+      setGroup(updated);
+      setTransferOwnershipDialogOpen(false);
+      setFamilyMembersOpen(false);
+      showToast('Управление семьёй передано');
+    } catch (error) {
+      showToast(getApiErrorMessage(error, 'Не удалось передать управление семьёй') ?? 'Ошибка');
+    } finally {
+      setTransferringOwnership(false);
+    }
+  }
+
   async function confirmLeaveFamily() {
     if (!token) return;
     if (ownerMustTransfer && !selectedNewOwnerUserId) {
@@ -1447,8 +1476,20 @@ export function FamilyGroupView({ groupId }: { groupId: string }) {
   }
 
   return (
-    <div className="flex h-[calc(100vh-120px)] min-h-[640px] overflow-hidden rounded-[28px] border border-[#eceef4] bg-[#eef2f8]">
-      <aside className="flex w-[300px] shrink-0 flex-col border-r border-[#e4e8ef] bg-white">
+    <div
+      className={cn(
+        'flex overflow-hidden bg-[#eef2f8]',
+        'h-[calc(100dvh-3.5rem-env(safe-area-inset-bottom)-4.5rem)] min-h-0 lg:h-[calc(100vh-120px)] lg:min-h-[640px]',
+        'rounded-none border-0 lg:rounded-[28px] lg:border lg:border-[#eceef4]'
+      )}
+    >
+      <aside
+        className={cn(
+          'flex shrink-0 flex-col border-r border-[#e4e8ef] bg-white',
+          'w-full lg:w-[300px]',
+          mobileChatOpen ? 'hidden lg:flex' : 'flex'
+        )}
+      >
         <div className="border-b border-[#eceef4] p-4">
           <button type="button" className="mb-3 flex items-center gap-2 text-sm text-[#667085]" onClick={() => router.push('/family')}>
             <ArrowLeft className="h-4 w-4" />
@@ -1557,11 +1598,24 @@ export function FamilyGroupView({ groupId }: { groupId: string }) {
         </div>
       </aside>
 
-      <section className="flex min-w-0 flex-1 flex-col bg-[#e6ebf2]">
+      <section
+        className={cn(
+          'min-w-0 flex-1 flex-col bg-[#e6ebf2]',
+          mobileChatOpen ? 'flex' : 'hidden lg:flex'
+        )}
+      >
         {activeRoom ? (
           <>
-            <div className="flex items-center justify-between border-b border-[#dce3ec] bg-white px-4 py-3">
-              <div className="flex min-w-0 items-center gap-3">
+            <div className="flex items-center justify-between gap-2 border-b border-[#dce3ec] bg-white px-3 py-3 sm:px-4">
+              <div className="flex min-w-0 flex-1 items-center gap-2 sm:gap-3">
+                <button
+                  type="button"
+                  aria-label="Назад к списку чатов"
+                  className="flex h-9 w-9 shrink-0 items-center justify-center rounded-xl text-[#667085] transition hover:bg-[#f4f5f8] lg:hidden"
+                  onClick={() => setActiveRoomId(null)}
+                >
+                  <ArrowLeft className="h-5 w-5" />
+                </button>
                 {(activeRoom.type === 'GROUP' || activeRoom.type === 'GENERAL') ? (
                   <label className="group/room-avatar relative block shrink-0 cursor-pointer overflow-hidden rounded-full">
                     <ChatRoomAvatarDisplay room={activeRoom} viewerUserId={user?.id ?? ''} token={token} />
@@ -1623,13 +1677,13 @@ export function FamilyGroupView({ groupId }: { groupId: string }) {
                   </p>
                 </button>
               </div>
-              <div className="flex items-center gap-2">
+              <div className="flex shrink-0 items-center gap-1 sm:gap-2">
                 {!activeRoomIsBot ? (
                   <>
                     <Button
                       size="sm"
                       variant="secondary"
-                      className="rounded-xl"
+                      className="h-9 w-9 rounded-xl p-0 sm:h-auto sm:w-auto sm:px-3"
                       aria-label="Поиск по сообщениям"
                       onClick={() => {
                         setChatToolsTab('search');
@@ -1641,7 +1695,7 @@ export function FamilyGroupView({ groupId }: { groupId: string }) {
                     <Button
                       size="sm"
                       variant="secondary"
-                      className="rounded-xl"
+                      className="hidden h-9 w-9 rounded-xl p-0 sm:flex sm:h-auto sm:w-auto sm:px-3"
                       aria-label="Перейти к дате"
                       onClick={() => {
                         setChatToolsTab('calendar');
@@ -2095,7 +2149,7 @@ export function FamilyGroupView({ groupId }: { groupId: string }) {
                 onDelete={() => void handleBulkDelete()}
               />
             ) : (
-            <div className="border-t border-[#dce3ec] bg-white px-3 py-3">
+            <div className="border-t border-[#dce3ec] bg-white px-2 py-2 pb-[max(0.5rem,env(safe-area-inset-bottom))] sm:px-3 sm:py-3">
               {editingMessageId ? (
                 <ChatMessageEditBanner
                   preview={draft.trim() || messages.find((item) => item.id === editingMessageId)?.content || undefined}
@@ -2126,7 +2180,7 @@ export function FamilyGroupView({ groupId }: { groupId: string }) {
                   <Paperclip className="h-4 w-4" />
                 </Button>
                 {!activeRoomIsE2E ? (
-                <Button size="sm" variant="ghost" className="h-10 w-10 rounded-xl p-0" onClick={() => setPollOpen(true)}>
+                <Button size="sm" variant="ghost" className="hidden h-10 w-10 rounded-xl p-0 sm:flex" onClick={() => setPollOpen(true)}>
                   <BarChart3 className="h-4 w-4" />
                 </Button>
                 ) : null}
@@ -2373,6 +2427,19 @@ export function FamilyGroupView({ groupId }: { groupId: string }) {
             <UserPlus className="mr-2 h-4 w-4" />
             Пригласить в семью
           </Button>
+          {isFamilyOwner && otherHumanMembers.length > 0 ? (
+            <Button
+              className="mt-2 w-full rounded-xl"
+              variant="secondary"
+              onClick={() => {
+                setFamilyMembersOpen(false);
+                openTransferOwnershipDialog();
+              }}
+            >
+              <ArrowRightLeft className="mr-2 h-4 w-4" />
+              Передать управление
+            </Button>
+          ) : null}
           <Button
             className="mt-2 w-full rounded-xl"
             variant="secondary"
@@ -2399,6 +2466,73 @@ export function FamilyGroupView({ groupId }: { groupId: string }) {
         </DialogContent>
       </Dialog>
 
+      <Dialog open={transferOwnershipDialogOpen} onOpenChange={setTransferOwnershipDialogOpen}>
+        <DialogContent className="max-h-[90dvh] overflow-y-auto rounded-[28px] sm:max-w-[480px]">
+          <DialogHeader>
+            <DialogTitle>Передать управление семьёй</DialogTitle>
+          </DialogHeader>
+          <p className="text-sm leading-relaxed text-[#667085]">
+            Выберите участника, который станет новым главой семьи «{group?.name}». Вы останетесь участником и сможете
+            покинуть семью в любой момент.
+          </p>
+          <div className="mt-4 max-h-[280px] space-y-2 overflow-y-auto">
+            {otherHumanMembers.map((member) => {
+              const selected = selectedNewOwnerUserId === member.userId;
+              return (
+                <button
+                  key={member.id}
+                  type="button"
+                  onClick={() => setSelectedNewOwnerUserId(member.userId)}
+                  className={cn(
+                    'flex w-full items-center gap-3 rounded-2xl px-3 py-3 text-left transition',
+                    selected ? 'bg-[#3390ec]/10 ring-2 ring-[#3390ec]/40' : 'bg-[#f4f5f8] hover:bg-[#eceef4]'
+                  )}
+                >
+                  <AvatarWithPresence
+                    userId={member.userId}
+                    displayName={member.displayName}
+                    hasAvatar={member.hasAvatar}
+                    token={token}
+                    isVerified={member.isVerified}
+                    verificationIcon={member.verificationIcon}
+                    className="h-10 w-10"
+                  />
+                  <div className="min-w-0 flex-1">
+                    <p className="truncate font-medium">{member.displayName}</p>
+                    <p className="text-xs text-[#667085]">{familyMemberRoleLabel(member.role)}</p>
+                  </div>
+                  {selected ? <Check className="h-5 w-5 shrink-0 text-[#3390ec]" /> : null}
+                </button>
+              );
+            })}
+          </div>
+          <div className="mt-6 flex flex-col-reverse gap-3 sm:flex-row">
+            <Button
+              variant="secondary"
+              className="flex-1"
+              disabled={transferringOwnership}
+              onClick={() => setTransferOwnershipDialogOpen(false)}
+            >
+              Отмена
+            </Button>
+            <Button
+              className="flex-1"
+              disabled={transferringOwnership || !selectedNewOwnerUserId}
+              onClick={() => void confirmTransferOwnership()}
+            >
+              {transferringOwnership ? (
+                <>
+                  <Loader2 className="mr-2 h-4 w-4 animate-spin" />
+                  Передаём...
+                </>
+              ) : (
+                'Передать управление'
+              )}
+            </Button>
+          </div>
+        </DialogContent>
+      </Dialog>
+
       <Dialog open={leaveFamilyDialogOpen} onOpenChange={setLeaveFamilyDialogOpen}>
         <DialogContent className="rounded-[28px] sm:max-w-[480px]">
           <DialogHeader>
diff --git a/apps/frontend/components/family/mini-family-chat.tsx b/apps/frontend/components/family/mini-family-chat.tsx
index f875bad..00a79dc 100644
--- a/apps/frontend/components/family/mini-family-chat.tsx
+++ b/apps/frontend/components/family/mini-family-chat.tsx
@@ -712,7 +712,7 @@ export function MiniFamilyChat() {
         type="button"
         onClick={() => (miniChatOpen ? closeMiniChat() : openMiniChat())}
         className={cn(
-          'fixed bottom-5 right-5 z-50 flex h-12 w-12 items-center justify-center rounded-full bg-[#3390ec] text-white shadow-lg transition hover:bg-[#2b7fd4] lg:bottom-6 lg:right-6',
+          'fixed bottom-[calc(4.5rem+env(safe-area-inset-bottom))] right-4 z-50 flex h-12 w-12 items-center justify-center rounded-full bg-[#3390ec] text-white shadow-lg transition hover:bg-[#2b7fd4] lg:bottom-6 lg:right-6',
           miniChatOpen && 'scale-95'
         )}
         aria-label={miniChatOpen ? 'Закрыть чат семьи' : 'Открыть чат семьи'}
@@ -721,7 +721,7 @@ export function MiniFamilyChat() {
       </button>
 
       {miniChatOpen ? (
-        <div className="fixed bottom-20 right-5 z-50 flex w-[min(92vw,380px)] flex-col overflow-hidden rounded-[24px] border border-[#eceef4] bg-white shadow-2xl lg:bottom-[5.5rem] lg:right-6">
+        <div className="fixed bottom-[calc(4.5rem+env(safe-area-inset-bottom)+3.5rem)] right-4 z-50 flex w-[min(92vw,380px)] flex-col overflow-hidden rounded-[24px] border border-[#eceef4] bg-white shadow-2xl lg:bottom-[5.5rem] lg:right-6">
           <div className="flex items-center gap-2 border-b border-[#eceef4] px-4 py-3">
             {view === 'chat' || view === 'bot' ? (
               <Button type="button" variant="ghost" size="icon" className="h-8 w-8 shrink-0" onClick={() => setView('picker')}>
diff --git a/apps/frontend/components/id/mobile-nav.tsx b/apps/frontend/components/id/mobile-nav.tsx
new file mode 100644
index 0000000..b12d722
--- /dev/null
+++ b/apps/frontend/components/id/mobile-nav.tsx
@@ -0,0 +1,46 @@
+'use client';
+
+import Link from 'next/link';
+import { FileText, Heart, Home, LockKeyhole, ShieldCheck, UserRound } from 'lucide-react';
+import { cn } from '@/lib/utils';
+import { getAdminLandingPath } from '@/lib/admin-access';
+import { useAuth } from './auth-provider';
+
+const baseItems = [
+  { href: '/', label: 'Главная', icon: Home },
+  { href: '/data', label: 'Данные', icon: UserRound },
+  { href: '/documents', label: 'Документы', icon: FileText },
+  { href: '/family', label: 'Семья', icon: Heart },
+  { href: '/security', label: 'Защита', icon: LockKeyhole }
+];
+
+export function MobileNav({ active }: { active: string }) {
+  const { user } = useAuth();
+  const items = user?.canAccessAdmin
+    ? [...baseItems, { href: getAdminLandingPath(user), label: 'Админ', icon: ShieldCheck }]
+    : baseItems;
+
+  return (
+    <nav className="fixed inset-x-0 bottom-0 z-50 border-t border-[#eceef4] bg-white/95 px-2 pb-[max(0.5rem,env(safe-area-inset-bottom))] pt-2 backdrop-blur lg:hidden">
+      <div className="mx-auto flex max-w-lg items-stretch justify-around gap-1">
+        {items.map((item) => {
+          const isActive =
+            active === item.href || (item.href.startsWith('/admin') && active.startsWith('/admin')) || (item.href === '/family' && active.startsWith('/family'));
+          return (
+            <Link
+              key={item.href}
+              href={item.href}
+              className={cn(
+                'flex min-w-0 flex-1 flex-col items-center gap-1 rounded-xl px-1 py-1.5 text-[10px] font-medium transition',
+                isActive ? 'text-[#3390ec]' : 'text-[#667085]'
+              )}
+            >
+              <item.icon className={cn('h-5 w-5 shrink-0', isActive && 'stroke-[2.25]')} />
+              <span className="truncate">{item.label}</span>
+            </Link>
+          );
+        })}
+      </div>
+    </nav>
+  );
+}
diff --git a/apps/frontend/components/id/settings-field-row.tsx b/apps/frontend/components/id/settings-field-row.tsx
index b7a8da9..8271fa4 100644
--- a/apps/frontend/components/id/settings-field-row.tsx
+++ b/apps/frontend/components/id/settings-field-row.tsx
@@ -26,7 +26,7 @@ export function SettingsFieldRow({ setting, onChange }: SettingsFieldRowProps) {
         <p className="mt-1 text-sm text-[#667085]">{meta?.hint ?? setting.description ?? setting.key}</p>
       </div>
 
-      <div className="flex shrink-0 items-center gap-2">
+      <div className="flex w-full shrink-0 items-center gap-2 md:w-auto">
         {type === 'boolean' ? (
           <button
             type="button"
@@ -41,7 +41,7 @@ export function SettingsFieldRow({ setting, onChange }: SettingsFieldRowProps) {
           </button>
         ) : type === 'select' ? (
           <select
-            className="h-10 min-w-[220px] rounded-xl border border-[#e4e7ec] bg-white px-3 text-sm outline-none focus:border-[#98a2b3]"
+            className="h-10 w-full min-w-0 rounded-xl border border-[#e4e7ec] bg-white px-3 text-sm outline-none focus:border-[#98a2b3] md:min-w-[220px] md:w-auto"
             value={setting.value}
             onChange={(event) => onChange(event.target.value)}
           >
@@ -55,7 +55,7 @@ export function SettingsFieldRow({ setting, onChange }: SettingsFieldRowProps) {
           <textarea
             value={setting.value}
             rows={3}
-            className="min-h-[88px] w-full min-w-[280px] resize-y rounded-xl border border-[#e4e7ec] bg-white px-3 py-2 text-sm outline-none focus:border-[#98a2b3] md:w-[360px]"
+            className="min-h-[88px] w-full min-w-0 resize-y rounded-xl border border-[#e4e7ec] bg-white px-3 py-2 text-sm outline-none focus:border-[#98a2b3] md:w-[360px]"
             onChange={(event) => onChange(event.target.value)}
           />
         ) : (
@@ -63,7 +63,7 @@ export function SettingsFieldRow({ setting, onChange }: SettingsFieldRowProps) {
             <Input
               type={setting.isSecret ? 'password' : type === 'number' ? 'number' : 'text'}
               value={setting.value}
-              className={setting.isSecret ? 'w-full min-w-[240px] bg-white md:w-[280px]' : 'w-full min-w-[180px] bg-white md:w-[220px]'}
+              className={setting.isSecret ? 'w-full min-w-0 bg-white md:w-[280px]' : 'w-full min-w-0 bg-white md:w-[220px]'}
               onChange={(event) => onChange(event.target.value)}
             />
             {meta?.unit ? <span className="text-sm text-[#667085]">{meta.unit}</span> : null}
diff --git a/apps/frontend/components/id/shell.tsx b/apps/frontend/components/id/shell.tsx
index bc31bc3..a7a5d37 100644
--- a/apps/frontend/components/id/shell.tsx
+++ b/apps/frontend/components/id/shell.tsx
@@ -1,25 +1,61 @@
 'use client';
 
 import { Sidebar } from './sidebar';
+import { MobileNav } from './mobile-nav';
 import { UserMenu } from './user-menu';
 import { NotificationBell } from '@/components/notifications/notification-bell';
 import { EmojiSpriteProvider } from '@/components/chat/emoji-sprite-provider';
 import { FamilyOverlayProvider } from '@/components/family/family-overlay-provider';
 import { MiniFamilyChat } from '@/components/family/mini-family-chat';
+import { BrandLogo } from '@/components/id/brand-logo';
+import Link from 'next/link';
+import { cn } from '@/lib/utils';
 
-export function IdShell({ active, children, wide = false }: { active: string; children: React.ReactNode; wide?: boolean }) {
+export function IdShell({
+  active,
+  children,
+  wide = false,
+  fullBleed = false
+}: {
+  active: string;
+  children: React.ReactNode;
+  wide?: boolean;
+  fullBleed?: boolean;
+}) {
   return (
     <FamilyOverlayProvider>
       <EmojiSpriteProvider />
-      <div className="min-h-screen bg-white">
+      <div className="min-h-screen overflow-x-hidden bg-white">
         <Sidebar active={active} />
-        <div className="fixed right-4 top-4 z-40 flex items-center gap-2 lg:right-8 lg:top-6">
+        <div className="fixed left-0 right-0 top-0 z-40 flex items-center justify-between border-b border-[#eceef4] bg-white/95 px-4 py-3 backdrop-blur lg:hidden">
+          <Link href="/" className="shrink-0">
+            <BrandLogo size="sm" variant="dark" />
+          </Link>
+          <div className="flex items-center gap-2">
+            <NotificationBell />
+            <UserMenu />
+          </div>
+        </div>
+        <div className="fixed right-4 top-4 z-40 hidden items-center gap-2 lg:right-8 lg:top-6 lg:flex">
           <NotificationBell />
           <UserMenu />
         </div>
-        <main className="px-5 py-8 lg:pl-[220px] lg:pr-8">
-          <div className={wide ? 'mx-auto max-w-[920px]' : 'mx-auto max-w-[560px]'}>{children}</div>
+        <main
+          className={cn(
+            'pb-[calc(4.5rem+env(safe-area-inset-bottom))] pt-14 lg:pb-8 lg:pt-8 lg:pl-[220px] lg:pr-8',
+            fullBleed && 'px-0 pb-[calc(4.5rem+env(safe-area-inset-bottom))] pt-14 lg:px-8'
+          )}
+        >
+          <div
+            className={cn(
+              'mx-auto w-full min-w-0',
+              fullBleed ? 'max-w-none' : wide ? 'max-w-[920px] px-4 sm:px-5 lg:px-0' : 'max-w-[560px] px-4 sm:px-5 lg:px-0'
+            )}
+          >
+            {children}
+          </div>
         </main>
+        <MobileNav active={active} />
         <MiniFamilyChat />
       </div>
     </FamilyOverlayProvider>
diff --git a/apps/frontend/lib/api.ts b/apps/frontend/lib/api.ts
index 2c2ff8b..2292854 100644
--- a/apps/frontend/lib/api.ts
+++ b/apps/frontend/lib/api.ts
@@ -991,6 +991,13 @@ export async function leaveFamilyGroup(groupId: string, token?: string | null, n
   );
 }
 
+export async function transferFamilyOwnership(groupId: string, newOwnerUserId: string, token?: string | null) {
+  return apiFetch<FamilyGroup>(`/family/groups/${groupId}/transfer-ownership`, {
+    method: 'POST',
+    body: JSON.stringify({ newOwnerUserId })
+  }, token);
+}
+
 export async function fetchChatMessages(roomId: string, token?: string | null, beforeMessageId?: string) {
   const query = beforeMessageId ? `?beforeMessageId=${beforeMessageId}` : '';
   return apiFetch<{ messages?: ChatMessage[] }>(`/chat/rooms/${roomId}/messages${query}`, {}, token);
diff --git a/apps/sso-core/src/domain/auth-grpc.controller.ts b/apps/sso-core/src/domain/auth-grpc.controller.ts
index 88cc1d6..fd0f0b4 100644
--- a/apps/sso-core/src/domain/auth-grpc.controller.ts
+++ b/apps/sso-core/src/domain/auth-grpc.controller.ts
@@ -912,6 +912,11 @@ export class AuthGrpcController {
     return this.family.leaveFamily(command.requesterId, command.groupId, command.newOwnerUserId);
   }
 
+  @GrpcMethod('FamilyService', 'TransferFamilyOwnership')
+  transferFamilyOwnership(command: { requesterId: string; groupId: string; newOwnerUserId: string }) {
+    return this.family.transferFamilyOwnership(command.requesterId, command.groupId, command.newOwnerUserId);
+  }
+
   @GrpcMethod('FamilyService', 'SendFamilyInvite')
   async sendFamilyInvite(command: { requesterId: string; groupId: string; target?: string; inviteeUserId?: string }) {
     const invite = await this.family.sendInvite(command.requesterId, command.groupId, {
diff --git a/apps/sso-core/src/domain/family.service.ts b/apps/sso-core/src/domain/family.service.ts
index e493e6e..a5ebe88 100644
--- a/apps/sso-core/src/domain/family.service.ts
+++ b/apps/sso-core/src/domain/family.service.ts
@@ -282,6 +282,34 @@ export class FamilyService {
 
   }
 
+  async transferFamilyOwnership(requesterId: string, groupId: string, newOwnerUserId: string) {
+
+    const group = await this.getGroupWithMembers(groupId);
+
+    this.assertOwner(group, requesterId);
+
+    if (newOwnerUserId === requesterId) {
+
+      throw new BadRequestException('Нельзя передать семью самому себе');
+
+    }
+
+    const otherHumans = this.getHumanMembers(group.members).filter((item) => item.userId !== requesterId);
+
+    if (!otherHumans.some((item) => item.userId === newOwnerUserId)) {
+
+      throw new BadRequestException('Новый глава семьи должен быть участником семьи');
+
+    }
+
+    await this.transferOwnership(group, requesterId, newOwnerUserId);
+
+    const updated = await this.getGroupWithMembers(groupId);
+
+    return this.toGroup(updated, requesterId);
+
+  }
+
   private async destroyGroupWithCleanup(group: {
 
     id: string;
diff --git a/shared/proto/identity.proto b/shared/proto/identity.proto
index 49e881c..bc9c5e3 100644
--- a/shared/proto/identity.proto
+++ b/shared/proto/identity.proto
@@ -35,6 +35,7 @@ service FamilyService {
   rpc AddFamilyMember (FamilyMemberRequest) returns (FamilyMemberResponse);
   rpc RemoveFamilyMember (RemoveFamilyMemberRequest) returns (MutationResponse);
   rpc LeaveFamilyGroup (LeaveFamilyGroupRequest) returns (LeaveFamilyGroupResponse);
+  rpc TransferFamilyOwnership (TransferFamilyOwnershipRequest) returns (FamilyGroupResponse);
   rpc SendFamilyInvite (SendFamilyInviteRequest) returns (FamilyInviteResponse);
   rpc SearchFamilyInviteUsers (SearchFamilyInviteUsersRequest) returns (SearchFamilyInviteUsersResponse);
   rpc RespondFamilyInvite (RespondFamilyInviteRequest) returns (FamilyInviteResponse);
@@ -253,6 +254,12 @@ message LeaveFamilyGroupResponse {
   bool deleted = 2;
 }
 
+message TransferFamilyOwnershipRequest {
+  string requesterId = 1;
+  string groupId = 2;
+  string newOwnerUserId = 3;
+}
+
 message SendFamilyInviteRequest {
   string requesterId = 1;
   string groupId = 2;