diff --git a/artifacts/visual-qa/manifest.json b/artifacts/visual-qa/manifest.json
index f215093..58c7aee 100644
--- a/artifacts/visual-qa/manifest.json
+++ b/artifacts/visual-qa/manifest.json
@@ -1,5 +1,5 @@
 {
-  "generatedAt": "2026-09-12T05:25:45.504Z",
+  "generatedAt": "2026-09-12T06:26:42.753Z",
   "module": "communications",
   "version": "v3.0",
   "referenceMockups": [
@@ -128,19 +128,19 @@
       "filename": "mobile-chat.png",
       "theme": "state-capture",
       "viewport": "mobile-chat",
-      "capturedAt": "2026-09-12T05:25:36.209Z"
+      "capturedAt": "2026-09-12T06:26:42.411Z"
     },
     {
       "filename": "mobile-contact.png",
       "theme": "state-capture",
       "viewport": "mobile-contact",
-      "capturedAt": "2026-09-12T05:25:36.390Z"
+      "capturedAt": "2026-09-12T06:26:42.582Z"
     },
     {
       "filename": "mobile-list.png",
       "theme": "state-capture",
       "viewport": "mobile-list",
-      "capturedAt": "2026-09-12T05:25:35.998Z"
+      "capturedAt": "2026-09-12T06:26:42.215Z"
     },
     {
       "filename": "noble-green-desktop-1280.png",
diff --git a/artifacts/visual-qa/mobile-chat.png b/artifacts/visual-qa/mobile-chat.png
index 510ae8f..5d8e598 100644
Binary files a/artifacts/visual-qa/mobile-chat.png and b/artifacts/visual-qa/mobile-chat.png differ
diff --git a/artifacts/visual-qa/mobile-contact.png b/artifacts/visual-qa/mobile-contact.png
index cd8e087..c0c1c6c 100644
Binary files a/artifacts/visual-qa/mobile-contact.png and b/artifacts/visual-qa/mobile-contact.png differ
diff --git a/artifacts/visual-qa/mobile-list.png b/artifacts/visual-qa/mobile-list.png
index 7bd8f3b..4737132 100644
Binary files a/artifacts/visual-qa/mobile-list.png and b/artifacts/visual-qa/mobile-list.png differ
diff --git a/e2e/13-communications-visual-and-responsive.spec.ts b/e2e/13-communications-visual-and-responsive.spec.ts
index 6db33d8..abf0940 100644
--- a/e2e/13-communications-visual-and-responsive.spec.ts
+++ b/e2e/13-communications-visual-and-responsive.spec.ts
@@ -134,7 +134,7 @@ test.describe('Scenario 13: Communications Visual & Responsive Design System V3
       await expect(backToListBtn).toBeVisible();
 
       // Check bottom contact teaser button
-      const profileTeaserBtn = activeChat.locator('button[aria-label="Открыть карточку контакта"]');
+      const profileTeaserBtn = activeChat.getByRole('button', { name: /Открыть.*контакт/i });
       await expect(profileTeaserBtn).toBeVisible();
 
       // Check message composer is positioned within viewport
diff --git a/src/app/layouts/AppShell.tsx b/src/app/layouts/AppShell.tsx
index 571c91a..79c9965 100644
--- a/src/app/layouts/AppShell.tsx
+++ b/src/app/layouts/AppShell.tsx
@@ -10,6 +10,7 @@ import { QuickActionsModal } from '../shell/QuickActionsModal';
 import { NotificationsDrawer } from '../shell/NotificationsDrawer';
 import { Drawer } from '../../shared/ui';
 import { useResponsive } from '../../shared/lib/useResponsive';
+import { useCommunicationsStore } from '../../features/communications/services/communicationsService';
 
 export const AppShell: React.FC = () => {
   const {
@@ -25,6 +26,7 @@ export const AppShell: React.FC = () => {
   const profile = getActiveProfile();
   const location = useLocation();
   const isCommunicationsPage = location.pathname.startsWith('/communications');
+  const isMobileChatOpen = useCommunicationsStore((state) => state.isMobileChatOpen);
 
   useEffect(() => {
     document.documentElement.setAttribute('data-theme', theme);
@@ -80,13 +82,13 @@ export const AppShell: React.FC = () => {
 
           {/* Center Work Area */}
           <div className="flex-1 flex flex-col min-w-0 overflow-hidden bg-krona-workspace">
-            <Topbar />
+            {!(isEffectiveMobile && isCommunicationsPage && isMobileChatOpen) && <Topbar />}
 
             {/* Main Content Router Outlet */}
             <main
               className={`flex-1 min-h-0 ${
                 isCommunicationsPage
-                  ? `overflow-hidden flex flex-col pt-0 px-0 ${isEffectiveMobile ? 'pb-20' : 'pb-0'}`
+                  ? `overflow-hidden flex flex-col pt-0 px-0 ${isEffectiveMobile ? 'pb-14' : 'pb-0'}`
                   : `overflow-y-auto ${isEffectiveMobile ? 'pb-24' : 'pb-8'} p-3 sm:p-4 md:p-6`
               }`}
             >
diff --git a/src/app/shell/BottomNav.tsx b/src/app/shell/BottomNav.tsx
index ba5ae5a..a97e5bb 100644
--- a/src/app/shell/BottomNav.tsx
+++ b/src/app/shell/BottomNav.tsx
@@ -22,12 +22,12 @@ export const BottomNav: React.FC = () => {
       <nav
         aria-label="Мобильная навигация"
         data-testid="bottom-nav"
-        className="fixed bottom-0 inset-x-0 bg-krona-surface text-krona-secondary border-t border-krona-border flex items-center justify-around z-40 px-1 pt-1 pb-[max(0.5rem,env(safe-area-inset-bottom))] shadow-lg backdrop-blur-md"
+        className="fixed bottom-0 inset-x-0 bg-krona-surface text-krona-secondary border-t border-krona-border flex items-center justify-around z-40 px-1 pt-0.5 pb-[max(0.25rem,env(safe-area-inset-bottom))] shadow-lg backdrop-blur-md"
       >
         {/* 1. Главная (KPI Сводка) */}
         <button
           onClick={() => navigate('/?tab=dashboard')}
-          className={`flex-1 min-h-[48px] min-w-[44px] flex flex-col items-center justify-center gap-1 p-1 rounded-xl transition-colors select-none ${
+          className={`flex-1 min-h-[44px] min-w-[44px] flex flex-col items-center justify-center gap-0.5 p-0.5 rounded-lg transition-colors select-none ${
             isDashboardActive
               ? 'text-krona-gold font-bold bg-krona-gold/10'
               : 'text-krona-secondary hover:text-krona-primary active:bg-krona-workspace'
@@ -41,7 +41,7 @@ export const BottomNav: React.FC = () => {
         {/* 2. Модули (Единый каталог) */}
         <button
           onClick={() => navigate('/')}
-          className={`flex-1 min-h-[48px] min-w-[44px] flex flex-col items-center justify-center gap-1 p-1 rounded-xl transition-colors select-none ${
+          className={`flex-1 min-h-[44px] min-w-[44px] flex flex-col items-center justify-center gap-0.5 p-0.5 rounded-lg transition-colors select-none ${
             isCatalogActive
               ? 'text-krona-gold font-bold bg-krona-gold/10'
               : 'text-krona-secondary hover:text-krona-primary active:bg-krona-workspace'
@@ -56,7 +56,7 @@ export const BottomNav: React.FC = () => {
         <NavLink
           to="/tasks"
           className={({ isActive }) =>
-            `flex-1 min-h-[48px] min-w-[44px] flex flex-col items-center justify-center gap-1 p-1 rounded-xl transition-colors select-none ${
+            `flex-1 min-h-[44px] min-w-[44px] flex flex-col items-center justify-center gap-0.5 p-0.5 rounded-lg transition-colors select-none ${
               isActive
                 ? 'text-krona-gold font-bold bg-krona-gold/10'
                 : 'text-krona-secondary hover:text-krona-primary active:bg-krona-workspace'
@@ -72,7 +72,7 @@ export const BottomNav: React.FC = () => {
         <NavLink
           to="/communications"
           className={({ isActive }) =>
-            `flex-1 min-h-[48px] min-w-[44px] flex flex-col items-center justify-center gap-1 p-1 rounded-xl transition-colors select-none ${
+            `flex-1 min-h-[44px] min-w-[44px] flex flex-col items-center justify-center gap-0.5 p-0.5 rounded-lg transition-colors select-none ${
               isActive
                 ? 'text-krona-gold font-bold bg-krona-gold/10'
                 : 'text-krona-secondary hover:text-krona-primary active:bg-krona-workspace'
@@ -87,7 +87,7 @@ export const BottomNav: React.FC = () => {
         {/* 5. Ещё */}
         <button
           onClick={() => setIsDrawerOpen(true)}
-          className={`flex-1 min-h-[48px] min-w-[44px] flex flex-col items-center justify-center gap-1 p-1 rounded-xl transition-colors select-none ${
+          className={`flex-1 min-h-[44px] min-w-[44px] flex flex-col items-center justify-center gap-0.5 p-0.5 rounded-lg transition-colors select-none ${
             isDrawerOpen
               ? 'text-krona-gold font-bold bg-krona-gold/10'
               : 'text-krona-secondary hover:text-krona-primary active:bg-krona-workspace'
diff --git a/src/app/shell/Topbar.tsx b/src/app/shell/Topbar.tsx
index e4af9cb..84612ae 100644
--- a/src/app/shell/Topbar.tsx
+++ b/src/app/shell/Topbar.tsx
@@ -75,7 +75,7 @@ export const Topbar: React.FC = () => {
   return (
     <header className="sticky top-0 z-30 bg-krona-surface/95 backdrop-blur-md border-b border-krona-border text-krona-primary shadow-xs">
       {/* Mobile Topbar (< 768px): Minimal, clean, zero overflow */}
-      <div className="flex md:hidden h-14 px-3 items-center justify-between gap-2">
+      <div className="flex md:hidden h-12 px-2.5 items-center justify-between gap-2">
         {/* Left: Logo & Current Section Title */}
         <div className="flex items-center gap-2 min-w-0">
           <div
@@ -99,7 +99,7 @@ export const Topbar: React.FC = () => {
           {/* AI Trigger */}
           <button
             onClick={() => setIsAiDrawerOpen(true)}
-            className="w-11 h-11 min-w-[44px] min-h-[44px] rounded-xl bg-krona-workspace text-krona-gold hover:text-krona-gold-text border border-krona-border flex items-center justify-center active:scale-95 transition-all"
+            className="w-10 h-10 min-w-10 min-h-10 rounded-xl bg-krona-workspace text-krona-gold hover:text-krona-gold-text border border-krona-border flex items-center justify-center active:scale-95 transition-all"
             title="Krona AI"
             aria-label="Krona AI"
           >
@@ -109,7 +109,7 @@ export const Topbar: React.FC = () => {
           {/* Notifications Trigger */}
           <button
             onClick={() => setIsNotificationsOpen(true)}
-            className="relative w-11 h-11 min-w-[44px] min-h-[44px] rounded-xl bg-krona-workspace text-krona-secondary hover:text-krona-primary border border-krona-border flex items-center justify-center active:scale-95 transition-all"
+            className="relative w-10 h-10 min-w-10 min-h-10 rounded-xl bg-krona-workspace text-krona-secondary hover:text-krona-primary border border-krona-border flex items-center justify-center active:scale-95 transition-all"
             title="Уведомления"
             aria-label="Уведомления"
             data-testid="mobile-notifications-btn"
@@ -123,7 +123,7 @@ export const Topbar: React.FC = () => {
           {/* Profile / Menu Drawer Trigger */}
           <button
             onClick={() => setIsMobileDrawerOpen(true)}
-            className="w-11 h-11 min-w-[44px] min-h-[44px] rounded-xl bg-krona-workspace text-krona-primary border border-krona-border flex items-center justify-center active:scale-95 transition-all"
+            className="w-10 h-10 min-w-10 min-h-10 rounded-xl bg-krona-workspace text-krona-primary border border-krona-border flex items-center justify-center active:scale-95 transition-all"
             title="Меню управления"
             aria-label="Открыть меню управления"
             data-testid="mobile-menu-btn"
diff --git a/src/features/communications/CommunicationsModule.tsx b/src/features/communications/CommunicationsModule.tsx
index 414fde7..7e209be 100644
--- a/src/features/communications/CommunicationsModule.tsx
+++ b/src/features/communications/CommunicationsModule.tsx
@@ -17,7 +17,7 @@ import {
 
 export function CommunicationsModule() {
   const [searchParams, setSearchParams] = useSearchParams();
-  const { activeTab, setActiveTab } = useCommunicationsStore();
+  const { activeTab, setActiveTab, isMobileChatOpen } = useCommunicationsStore();
 
   const [isComposeEmailOpen, setIsComposeEmailOpen] = useState(false);
   const [isCreateChannelOpen, setIsCreateChannelOpen] = useState(false);
@@ -38,13 +38,15 @@ export function CommunicationsModule() {
   return (
     <div className="h-full min-h-0 flex flex-col bg-[var(--krona-bg-workspace)] overflow-hidden">
       {/* Header */}
-      <CommunicationsHeader
-        activeTab={currentTab}
-        onTabChange={handleTabChange}
-        unreadChats={48}
-        unreadEmails={10}
-        unreadChannels={4}
-      />
+      <div className={currentTab === 'messengers' && isMobileChatOpen ? 'hidden sm:block' : ''}>
+        <CommunicationsHeader
+          activeTab={currentTab}
+          onTabChange={handleTabChange}
+          unreadChats={48}
+          unreadEmails={10}
+          unreadChannels={4}
+        />
+      </div>
 
       {/* Body Views */}
       <main className="flex-1 min-h-0 flex flex-col overflow-hidden">
diff --git a/src/features/communications/components/MessengersView.tsx b/src/features/communications/components/MessengersView.tsx
index 0f34479..4f50b1b 100644
--- a/src/features/communications/components/MessengersView.tsx
+++ b/src/features/communications/components/MessengersView.tsx
@@ -2,7 +2,7 @@ import React, { useState, useRef, useEffect, type FormEvent } from 'react';
 import {
   Search, ArrowUpDown, Star, Phone, Video, UserPlus,
   MoreVertical, Paperclip, Sparkles, Smile, Mic, Send, Download, FileText,
-  ArrowLeft, ChevronRight, CheckCheck, Plus,
+  ArrowLeft, CheckCheck, Plus,
   Briefcase, CheckSquare, ShieldCheck
 } from 'lucide-react';
 import { useCommunicationsStore } from '../services/communicationsService';
@@ -171,11 +171,15 @@ export function MessengersView({ onOpenConnectModal, onOpenAddContactModal }: Me
   // Dialogs list section
   const dialogListSection = (
     <section
-      className="w-full h-full bg-[var(--krona-surface-raised)] rounded-2xl border border-[var(--krona-border-subtle)] shadow-[var(--krona-shadow-soft)] flex flex-col min-h-0 overflow-hidden"
+      className={`w-full h-full bg-[var(--krona-surface-raised)] flex flex-col min-h-0 overflow-hidden ${
+        layoutMode === 'compact'
+          ? 'rounded-none border-0 shadow-none'
+          : 'rounded-2xl border border-[var(--krona-border-subtle)] shadow-[var(--krona-shadow-soft)]'
+      }`}
       aria-label="Список диалогов"
     >
       {/* Search and filters header */}
-      <div className="p-3.5 border-b border-[var(--krona-border-subtle)] space-y-2.5 shrink-0">
+      <div className={`${layoutMode === 'compact' ? 'p-2 space-y-1.5' : 'p-3.5 space-y-2.5'} border-b border-[var(--krona-border-subtle)] shrink-0`}>
         <div className="relative">
           <Search className="w-4 h-4 absolute left-3 top-1/2 -translate-y-1/2 text-[var(--krona-text-muted)]" />
           <input
@@ -255,7 +259,9 @@ export function MessengersView({ onOpenConnectModal, onOpenAddContactModal }: Me
                   setIsMobileChatOpen(true);
                   setIsContactDrawerOpen(false);
                 }}
-                className={`w-full p-3.5 text-left flex items-start gap-3 transition-colors border-l-4 min-h-[76px] ${
+                className={`w-full text-left flex items-start transition-colors border-l-4 ${
+                  layoutMode === 'compact' ? 'px-3 py-2.5 gap-2.5 min-h-[64px]' : 'p-3.5 gap-3 min-h-[76px]'
+                } ${
                   isActive
                     ? 'bg-[var(--krona-surface-selected)] border-l-[var(--krona-primary)]'
                     : 'border-l-transparent hover:bg-[var(--krona-surface-hover)]'
@@ -316,17 +322,21 @@ export function MessengersView({ onOpenConnectModal, onOpenAddContactModal }: Me
   // Active chat section
   const activeChatSection = (
     <section
-      className="w-full h-full bg-[var(--krona-surface-raised)] rounded-2xl border border-[var(--krona-border-subtle)] shadow-[var(--krona-shadow-soft)] flex flex-col min-h-0 overflow-hidden"
+      className={`w-full h-full bg-[var(--krona-surface-raised)] flex flex-col min-h-0 overflow-hidden ${
+        layoutMode === 'compact'
+          ? 'rounded-none border-0 shadow-none'
+          : 'rounded-2xl border border-[var(--krona-border-subtle)] shadow-[var(--krona-shadow-soft)]'
+      }`}
       aria-label="Активный диалог"
     >
       {/* Chat Header */}
-      <div className="h-16 px-4 bg-[var(--krona-surface)] border-b border-[var(--krona-border-subtle)] flex items-center justify-between gap-3 shrink-0">
-        <div className="flex items-center gap-3 min-w-0">
+      <div className={`${layoutMode === 'compact' ? 'h-12 px-2' : 'h-16 px-4'} bg-[var(--krona-surface)] border-b border-[var(--krona-border-subtle)] flex items-center justify-between gap-2 shrink-0`}>
+        <div className="flex items-center gap-2 min-w-0">
           {layoutMode === 'compact' && (
             <button
               type="button"
               onClick={() => setIsMobileChatOpen(false)}
-              className="w-9 h-9 -ml-1 rounded-lg flex items-center justify-center text-[var(--krona-text-secondary)] hover:bg-[var(--krona-surface-hover)]"
+              className="w-9 h-9 -ml-1 rounded-full flex items-center justify-center text-[var(--krona-text-secondary)] hover:bg-[var(--krona-surface-hover)]"
               aria-label="Назад к списку чатов"
             >
               <ArrowLeft className="w-5 h-5" />
@@ -379,7 +389,7 @@ export function MessengersView({ onOpenConnectModal, onOpenAddContactModal }: Me
                 type: 'info',
               })
             }
-            className="w-9 h-9 rounded-lg hover:bg-[var(--krona-surface-hover)] flex items-center justify-center transition-colors"
+            className="hidden sm:flex w-9 h-9 rounded-lg hover:bg-[var(--krona-surface-hover)] items-center justify-center transition-colors"
             title="Аудиозвонок"
             aria-label="Аудиозвонок"
           >
@@ -394,7 +404,7 @@ export function MessengersView({ onOpenConnectModal, onOpenAddContactModal }: Me
                 type: 'info',
               })
             }
-            className="w-9 h-9 rounded-lg hover:bg-[var(--krona-surface-hover)] flex items-center justify-center transition-colors"
+            className="hidden sm:flex w-9 h-9 rounded-lg hover:bg-[var(--krona-surface-hover)] items-center justify-center transition-colors"
             title="Видеозвонок"
             aria-label="Видеозвонок"
           >
@@ -414,6 +424,18 @@ export function MessengersView({ onOpenConnectModal, onOpenAddContactModal }: Me
             </button>
           )}
 
+          {layoutMode === 'compact' && (
+            <button
+              type="button"
+              onClick={() => setIsContactDrawerOpen(true)}
+              className="w-9 h-9 rounded-full flex items-center justify-center text-[var(--krona-text-secondary)] hover:bg-[var(--krona-surface-hover)]"
+              title="Карточка контакта"
+              aria-label="Открыть карточку контакта"
+            >
+              <UserPlus className="w-4 h-4" />
+            </button>
+          )}
+
           <button
             type="button"
             className="w-9 h-9 rounded-lg hover:bg-[var(--krona-surface-hover)] flex items-center justify-center transition-colors"
@@ -428,7 +450,7 @@ export function MessengersView({ onOpenConnectModal, onOpenAddContactModal }: Me
       {/* Messages Feed */}
       <div
         ref={messagesContainerRef}
-        className="flex-1 min-h-0 overflow-y-auto p-4 space-y-3 bg-[var(--krona-bg-workspace)]/40"
+        className={`flex-1 min-h-0 overflow-y-auto bg-[var(--krona-bg-workspace)]/40 ${layoutMode === 'compact' ? 'px-2.5 py-2 space-y-2' : 'p-4 space-y-3'}`}
       >
         <div className="text-center my-2">
           <span className="px-3 py-1 rounded-full text-[11px] font-medium bg-[var(--krona-surface)] text-[var(--krona-text-muted)] border border-[var(--krona-border-subtle)] shadow-2xs">
@@ -439,7 +461,7 @@ export function MessengersView({ onOpenConnectModal, onOpenAddContactModal }: Me
         {activeChat.messages.map((msg) => (
           <div
             key={msg.id}
-            className={`flex gap-3 ${
+            className={`flex ${layoutMode === 'compact' ? 'gap-2' : 'gap-3'} ${
               msg.direction === 'outgoing' ? 'justify-end' : 'justify-start'
             }`}
           >
@@ -455,7 +477,7 @@ export function MessengersView({ onOpenConnectModal, onOpenAddContactModal }: Me
             )}
 
             <div
-              className={`max-w-[85%] sm:max-w-[75%] rounded-2xl p-3.5 shadow-xs text-sm transition-colors ${
+              className={`max-w-[88%] sm:max-w-[75%] rounded-2xl shadow-xs text-sm transition-colors ${layoutMode === 'compact' ? 'px-3 py-2' : 'p-3.5'} ${
                 msg.direction === 'outgoing'
                   ? 'bg-[var(--krona-primary-soft)] border border-[var(--krona-border-subtle)] text-[var(--krona-text-primary)] rounded-tr-xs'
                   : 'bg-[var(--krona-surface)] border border-[var(--krona-border-subtle)] text-[var(--krona-text-primary)] rounded-tl-xs'
@@ -515,7 +537,7 @@ export function MessengersView({ onOpenConnectModal, onOpenAddContactModal }: Me
       </div>
 
       {/* Quick Replies Bar */}
-      <div className="px-4 py-2 bg-[var(--krona-surface)]/60 border-t border-[var(--krona-border-subtle)] flex items-center gap-2 overflow-x-auto scrollbar-none shrink-0">
+      {layoutMode !== 'compact' && <div className="px-4 py-2 bg-[var(--krona-surface)]/60 border-t border-[var(--krona-border-subtle)] flex items-center gap-2 overflow-x-auto scrollbar-none shrink-0">
         <span className="text-[11px] text-[var(--krona-text-muted)] font-medium shrink-0 flex items-center gap-1">
           <Sparkles className="w-3 h-3 text-[var(--krona-gold)]" /> Быстрые:
         </span>
@@ -529,12 +551,12 @@ export function MessengersView({ onOpenConnectModal, onOpenAddContactModal }: Me
             {qrText}
           </button>
         ))}
-      </div>
+      </div>}
 
       {/* Message Composer */}
       <form
         onSubmit={handleSend}
-        className="p-3 sm:p-4 bg-[var(--krona-surface)] border-t border-[var(--krona-border-subtle)] shrink-0"
+        className="p-1.5 sm:p-4 bg-[var(--krona-surface)] border-t border-[var(--krona-border-subtle)] shrink-0"
       >
         <div className="flex items-end gap-2 bg-[var(--krona-bg-workspace)] border border-[var(--krona-border)] rounded-xl p-1.5 focus-within:border-[var(--krona-primary)] transition-colors">
           <button
@@ -613,35 +635,6 @@ export function MessengersView({ onOpenConnectModal, onOpenAddContactModal }: Me
         </div>
       </form>
 
-      {/* Mobile Bottom Contact Teaser Bar (Level 2 -> Level 3 drilldown) */}
-      {layoutMode === 'compact' && (
-        <div className="p-3 bg-[var(--krona-surface)] border-t border-[var(--krona-border-subtle)] flex items-center justify-between gap-3 shrink-0">
-          <div className="flex items-center gap-2.5 min-w-0">
-            <Avatar
-              src={activeChat.contact.avatarUrl}
-              alt={activeChat.contact.name}
-              initials={activeChat.contact.initials}
-              size="sm"
-            />
-            <div className="min-w-0">
-              <span className="font-semibold text-xs text-[var(--krona-text-primary)] truncate block">
-                {activeChat.contact.name}
-              </span>
-              <span className="text-[11px] text-[var(--krona-text-secondary)] truncate block">
-                {activeChat.contact.company}
-              </span>
-            </div>
-          </div>
-          <button
-            type="button"
-            onClick={() => setIsContactDrawerOpen(true)}
-            className="p-1.5 rounded-lg text-[var(--krona-primary)] hover:bg-[var(--krona-surface-hover)]"
-            aria-label="Открыть карточку контакта"
-          >
-            <ChevronRight className="w-5 h-5" />
-          </button>
-        </div>
-      )}
     </section>
   );
 
@@ -652,7 +645,7 @@ export function MessengersView({ onOpenConnectModal, onOpenAddContactModal }: Me
       className="flex-1 min-h-0 flex flex-col bg-[var(--krona-bg-workspace)] overflow-hidden"
     >
       {/* 1. Channel Switcher Row (# 17. Channel Switcher) */}
-      <div className="bg-[var(--krona-surface)]/80 backdrop-blur-xs border-b border-[var(--krona-border-subtle)] px-3 sm:px-6 py-2 flex items-center justify-between gap-3 min-w-0 shrink-0">
+      {!(layoutMode === 'compact' && isMobileChatOpen) && <div className="bg-[var(--krona-surface)]/80 backdrop-blur-xs border-b border-[var(--krona-border-subtle)] px-2 sm:px-6 py-1.5 sm:py-2 flex items-center justify-between gap-2 sm:gap-3 min-w-0 shrink-0">
         <div className="relative flex-1 min-w-0 flex items-center overflow-x-auto scrollbar-none py-0.5">
           <div className="flex items-center gap-2 shrink-0 pr-6">
             <ConnectorPill
@@ -722,10 +715,10 @@ export function MessengersView({ onOpenConnectModal, onOpenAddContactModal }: Me
             <Plus className="w-4 h-4 text-[var(--krona-primary)]" />
           </button>
         </div>
-      </div>
+      </div>}
 
       {/* 2. Main Workspace Canvas */}
-      <div className="flex-1 min-h-0 p-3 sm:p-4 lg:p-5 flex gap-4 overflow-hidden">
+      <div className={`flex-1 min-h-0 flex gap-4 overflow-hidden ${layoutMode === 'compact' ? 'p-0' : 'p-3 sm:p-4 lg:p-5'}`}>
         {/* COMPACT MODE (<600px): strictly 1 level at a time */}
         {layoutMode === 'compact' && (
           <>