diff --git a/public/css/main.css b/public/css/main.css
index 0391ebc..fe0e391 100644
--- a/public/css/main.css
+++ b/public/css/main.css
@@ -38,6 +38,8 @@ html {
   --radius-card: 14px;
   --radius-btn: 14px;
   --space: clamp(1rem, 4vw, 2.75rem);
+  /* Единый отступ fixed-элементов (FAB, плавающее меню) от краёв вьюпорта */
+  --edge-pad: max(var(--space), env(safe-area-inset-right, 0px), env(safe-area-inset-bottom, 0px), env(safe-area-inset-left, 0px), env(safe-area-inset-top, 0px));
   /* Контент на всю ширину экрана, поля только от --space и safe area */
   --max: none;
   --font: "Alice", system-ui, -apple-system, serif;
@@ -811,8 +813,8 @@ a:visited:not(.btn):not(.fab):not(.logo):not(.skip-link):hover {
 
 .fab-stack {
   position: fixed;
-  right: max(var(--space), env(safe-area-inset-right, 0px));
-  bottom: max(1rem, env(safe-area-inset-bottom, 0px));
+  right: var(--edge-pad);
+  bottom: var(--edge-pad);
   display: flex;
   flex-direction: column;
   align-items: flex-end;
diff --git a/public/js/modules/header/nav-overflow.js b/public/js/modules/header/nav-overflow.js
index a1f0c51..e0d5a6c 100644
--- a/public/js/modules/header/nav-overflow.js
+++ b/public/js/modules/header/nav-overflow.js
@@ -10,7 +10,20 @@ export function initNavOverflow() {
 
   const links = Array.from(nav.querySelectorAll("a"));
   const MENU_GAP = 6;
-  const VIEWPORT_PAD = 8;
+  function getEdgePad() {
+    const raw = getComputedStyle(document.documentElement).getPropertyValue("--edge-pad").trim();
+    if (!raw) return 8;
+    // resolve через временный элемент, т.к. значение — max(...clamp...)
+    const probe = document.createElement("span");
+    probe.style.all = "unset";
+    probe.style.position = "fixed";
+    probe.style.left = raw;
+    document.body.appendChild(probe);
+    const px = probe.getBoundingClientRect().left;
+    probe.remove();
+    return Math.max(0, Math.round(px));
+  }
+  let VIEWPORT_PAD = getEdgePad();
   let openInFloatingMode = null;
   let resizeRaf = 0;
 
@@ -139,6 +152,7 @@ export function initNavOverflow() {
   const onResize = () => {
     if (resizeRaf) cancelAnimationFrame(resizeRaf);
     resizeRaf = requestAnimationFrame(() => {
+      VIEWPORT_PAD = getEdgePad();
       layoutLinks();
       placeMoreMenu();
       resizeRaf = 0;