diff --git a/app/static/css/components.css b/app/static/css/components.css
index fd7a865..e28d0a0 100644
--- a/app/static/css/components.css
+++ b/app/static/css/components.css
@@ -40,6 +40,17 @@
     }
 }
 
+@keyframes slideUpSheet {
+    from {
+        transform: translateY(100%);
+        opacity: 0;
+    }
+    to {
+        transform: translateY(0);
+        opacity: 1;
+    }
+}
+
 .auth-header,
 .login-header {
     text-align: center;
diff --git a/app/static/css/dictionary.css b/app/static/css/dictionary.css
index d276528..c1b4d4e 100644
--- a/app/static/css/dictionary.css
+++ b/app/static/css/dictionary.css
@@ -757,56 +757,6 @@
 }
 
 
-    /* 7. Bottom Sheet for Word Translation Popup on Mobile */
-    .reader-word-popup {
-        position: fixed !important;
-        top: auto !important;
-        bottom: calc(58px + env(safe-area-inset-bottom, 0px)) !important;
-        left: 8px !important;
-        right: 8px !important;
-        width: auto !important;
-        max-width: none !important;
-        border-radius: 18px !important;
-        box-shadow: 0 -8px 30px rgba(0, 0, 0, 0.5) !important;
-        border: 1px solid var(--border-focus) !important;
-        background-color: var(--bg-surface) !important;
-        z-index: 10005 !important;
-        padding: 14px 16px !important;
-        animation: slideUpSheet 0.22s cubic-bezier(0.16, 1, 0.3, 1) !important;
-    }
-
-    .reader-settings-panel {
-        position: fixed !important;
-        top: auto !important;
-        bottom: calc(58px + env(safe-area-inset-bottom, 0px)) !important;
-        left: 8px !important;
-        right: 8px !important;
-        width: auto !important;
-        max-height: calc(85dvh - 60px) !important;
-        overflow-y: auto !important;
-        -webkit-overflow-scrolling: touch !important;
-        border-radius: 20px !important;
-        box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.55) !important;
-        border: 1px solid var(--border-focus) !important;
-        background-color: var(--bg-surface) !important;
-        color: var(--text-main) !important;
-        padding: 16px 18px 24px !important;
-        z-index: 10006 !important;
-        animation: slideUpSheet 0.22s cubic-bezier(0.16, 1, 0.3, 1) !important;
-    }
-
-    @keyframes slideUpSheet {
-        from {
-            transform: translateY(100%);
-            opacity: 0;
-        }
-        to {
-            transform: translateY(0);
-            opacity: 1;
-        }
-    }
-
-
 /* --- Responsive Mobile Overrides (max-width: 768px) --- */
 @media (max-width: 768px) {
     /* 4. Dictionary & Search */
diff --git a/app/static/css/reader.css b/app/static/css/reader.css
index 34f037b..f59b0e2 100644
--- a/app/static/css/reader.css
+++ b/app/static/css/reader.css
@@ -1549,9 +1549,11 @@
     background-color: var(--bg-surface);
     border: 1px solid var(--border-focus);
     border-radius: var(--radius-lg);
-    box-shadow: 0 12px 24px -4px rgba(0, 0, 0, 0.5);
-    width: 320px;
-    max-width: calc(100vw - 32px);
+    box-shadow: 0 12px 28px -4px rgba(0, 0, 0, 0.55);
+    width: 340px;
+    max-width: 360px;
+    max-height: calc(100vh - 40px);
+    overflow-y: auto;
     padding: 16px;
     animation: fadeInScale 0.15s ease-out;
 }
@@ -2061,6 +2063,56 @@
         font-size: 17px;
         line-height: 1.65;
     }
+
+    /* Mobile Bottom Sheet for Word Translation Popup */
+    .reader-word-popup {
+        position: fixed !important;
+        top: auto !important;
+        bottom: calc(58px + env(safe-area-inset-bottom, 0px)) !important;
+        left: 8px !important;
+        right: 8px !important;
+        width: auto !important;
+        max-width: none !important;
+        max-height: calc(85dvh - 60px) !important;
+        overflow-y: auto !important;
+        border-radius: 18px !important;
+        box-shadow: 0 -8px 30px rgba(0, 0, 0, 0.5) !important;
+        border: 1px solid var(--border-focus) !important;
+        background-color: var(--bg-surface) !important;
+        z-index: 10005 !important;
+        padding: 14px 16px !important;
+        animation: slideUpSheet 0.22s cubic-bezier(0.16, 1, 0.3, 1) !important;
+    }
+
+    body.zen-mode-active .reader-word-popup {
+        bottom: calc(12px + env(safe-area-inset-bottom, 0px)) !important;
+    }
+
+    /* Mobile Bottom Sheet for Reader Settings */
+    .reader-settings-panel {
+        position: fixed !important;
+        top: auto !important;
+        bottom: calc(58px + env(safe-area-inset-bottom, 0px)) !important;
+        left: 8px !important;
+        right: 8px !important;
+        width: auto !important;
+        max-width: none !important;
+        max-height: calc(85dvh - 60px) !important;
+        overflow-y: auto !important;
+        -webkit-overflow-scrolling: touch !important;
+        border-radius: 20px !important;
+        box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.55) !important;
+        border: 1px solid var(--border-focus) !important;
+        background-color: var(--bg-surface) !important;
+        color: var(--text-main) !important;
+        padding: 16px 18px 24px !important;
+        z-index: 10006 !important;
+        animation: slideUpSheet 0.22s cubic-bezier(0.16, 1, 0.3, 1) !important;
+    }
+
+    body.zen-mode-active .reader-settings-panel {
+        bottom: calc(12px + env(safe-area-inset-bottom, 0px)) !important;
+    }
 }
 
 /* ==========================================================================
diff --git a/app/static/index.html b/app/static/index.html
index f7c964a..51aee9d 100644
--- a/app/static/index.html
+++ b/app/static/index.html
@@ -5,7 +5,7 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no, viewport-fit=cover">
     <title>Notes — Персональный тренажер и словарь английского языка</title>
     <meta name="description" content="Защищённый персональный тренажёр и словарь английского языка с интервальными повторениями SRS SM-2, контекстным поиском и озвучкой">
-    <link rel="stylesheet" href="/static/css/style.css?v=6.7">
+    <link rel="stylesheet" href="/static/css/style.css?v=6.8">
     
     <!-- PWA meta and icons -->
     <link rel="manifest" href="/manifest.json">
@@ -2049,7 +2049,7 @@
     <!-- Audio Element for native streaming -->
     <audio id="global-audio-player" preload="none"></audio>
 
-    <script type="module" src="/static/js/app.js?v=6.4"></script>
+    <script type="module" src="/static/js/app.js?v=6.5"></script>
 </body>
 </html>
 
diff --git a/app/static/js/modules/reader.js b/app/static/js/modules/reader.js
index c3b204a..71a2e35 100644
--- a/app/static/js/modules/reader.js
+++ b/app/static/js/modules/reader.js
@@ -1309,31 +1309,40 @@ export function positionWordPopup(targetElement) {
     if (window.innerWidth <= 768) {
         readerWordPopup.style.top = '';
         readerWordPopup.style.left = '';
+        readerWordPopup.style.right = '';
+        readerWordPopup.style.bottom = '';
+        readerWordPopup.style.width = '';
         return;
     }
     const rect = targetElement.getBoundingClientRect();
-    const popupWidth = 320;
+    const popupWidth = (readerWordPopup.offsetWidth && readerWordPopup.offsetWidth >= 280 && readerWordPopup.offsetWidth <= 380)
+        ? readerWordPopup.offsetWidth
+        : 340;
     const popupHeight = readerWordPopup.offsetHeight || 220;
     const viewportWidth = window.innerWidth;
     const viewportHeight = window.innerHeight;
 
     let left = rect.left + (rect.width / 2) - (popupWidth / 2);
-    if (left + popupWidth > viewportWidth - 12) {
-        left = viewportWidth - popupWidth - 12;
+    if (left + popupWidth > viewportWidth - 16) {
+        left = viewportWidth - popupWidth - 16;
     }
-    if (left < 12) {
-        left = 12;
+    if (left < 16) {
+        left = 16;
     }
 
+    const minTop = isZenMode ? 16 : 65;
     let top = rect.bottom + 8;
-    if (top + popupHeight > viewportHeight - 12) {
-        if (rect.top - popupHeight - 8 >= 65 || rect.top > viewportHeight / 2) {
-            top = Math.max(65, rect.top - popupHeight - 8);
+    if (top + popupHeight > viewportHeight - 16) {
+        if (rect.top - popupHeight - 8 >= minTop || rect.top > viewportHeight / 2) {
+            top = Math.max(minTop, rect.top - popupHeight - 8);
         }
     }
 
     readerWordPopup.style.top = `${Math.round(top)}px`;
     readerWordPopup.style.left = `${Math.round(left)}px`;
+    readerWordPopup.style.right = 'auto';
+    readerWordPopup.style.bottom = 'auto';
+    readerWordPopup.style.width = `${popupWidth}px`;
 }
 
 export async function openWordPopup(term, contextSentence, targetElement, paragraphContext = '') {
diff --git a/app/static/sw.js b/app/static/sw.js
index e6c7412..29c18b8 100644
--- a/app/static/sw.js
+++ b/app/static/sw.js
@@ -1,7 +1,7 @@
 // Service Worker for Notes English PWA (Stage 2)
 // Strategy: Cache-first for static assets, Network-first for API calls.
 
-const CACHE_NAME = 'notes-v6.7';
+const CACHE_NAME = 'notes-v6.8';
 const OFFLINE_URL = '/';
 
 const PRECACHE_URLS = [