diff --git a/web/css/app.css b/web/css/app.css
index 8ea4bec..bb3b851 100644
--- a/web/css/app.css
+++ b/web/css/app.css
@@ -336,10 +336,11 @@ body.no-gutter #gutter { display: none; }
   inset: 0;
   z-index: 1;
   overflow: hidden;
-  padding: var(--pad-y) var(--pad-x);
+  padding: var(--pad-y) calc(var(--pad-x) + var(--sbw, 0px)) var(--pad-y) var(--pad-x);
   font-family: var(--editor-font);
   font-size: var(--editor-size);
   line-height: var(--line-h);
+  font-synthesis: none; /* negrito sintetizado alonga glifos e desloca a quebra vs textarea */
   color: var(--fg);
   white-space: pre-wrap;
   overflow-wrap: break-word;
@@ -367,6 +368,7 @@ body.no-gutter #gutter { display: none; }
   border: 0;
   resize: none;
   overflow: auto;
+  scrollbar-gutter: stable; /* reserva a barra clássica sempre: largura de texto constante p/ casar com o overlay */
   padding: var(--pad-y) var(--pad-x);
   font-family: var(--editor-font);
   font-size: var(--editor-size);
@@ -381,8 +383,8 @@ body.no-gutter #gutter { display: none; }
 #editor::placeholder { color: var(--muted); }
 
 /* tokens de colorização */
-.tk-h      { color: var(--tk-heading); font-weight: 700; }
-.tk-strong { color: var(--tk-strong); font-weight: 700; }
+.tk-h      { color: var(--tk-heading); font-weight: 700; text-shadow: .35px 0 currentColor; }
+.tk-strong { color: var(--tk-strong); font-weight: 700; text-shadow: .35px 0 currentColor; }
 .tk-em     { color: var(--tk-em); font-style: italic; }
 .tk-strike { color: var(--tk-strike); text-decoration: line-through; }
 .tk-code   { color: var(--tk-code); background: var(--tk-code-bg); }
@@ -391,7 +393,7 @@ body.no-gutter #gutter { display: none; }
 .tk-link   { color: var(--tk-link); text-decoration: underline; }
 .tk-url    { color: var(--tk-url); text-decoration: underline; }
 .tk-tag    { color: var(--tk-tag); font-weight: 600; }
-.tk-mark   { color: var(--tk-mark); font-weight: 700; }
+.tk-mark   { color: var(--tk-mark); font-weight: 700; text-shadow: .35px 0 currentColor; }
 .tk-quote  { color: var(--tk-quote); font-style: italic; }
 .tk-html   { color: var(--tk-html); }
 .tk-attr   { color: var(--tk-attr); }
diff --git a/web/js/app.js b/web/js/app.js
index c3d526b..55cd322 100644
--- a/web/js/app.js
+++ b/web/js/app.js
@@ -1157,6 +1157,10 @@
     const frag = document.createDocumentFragment();
     for (const r of rowEls) frag.appendChild(r);
     E.hl.replaceChildren(frag);
+    // paridade de largura com o textarea: com scrollbar-gutter:stable o valor é
+    // constante por plataforma (clássico ~15-17px; overlay 0) e o espelha aqui
+    const sbw = E.editor.offsetWidth - E.editor.clientWidth;
+    E.hl.style.setProperty('--sbw', sbw > 0 ? sbw + 'px' : '0px');
     if (lines.length !== lastGutterCount) {
       const gf = document.createDocumentFragment();
       for (let i = 1; i <= lines.length; i++) {
@@ -1172,6 +1176,10 @@
       const rows = E.gutterInner.children;
       for (let i = 0; i < rowEls.length; i++) rows[i].style.height = E.hl.children[i].offsetHeight + 'px';
     }
+    // replaceChildren zera o scroll do overlay/gutter — reassincroniza com o textarea
+    E.hl.scrollTop = E.editor.scrollTop;
+    E.hl.scrollLeft = E.editor.scrollLeft;
+    E.gutter.scrollTop = E.editor.scrollTop;
     updateMarker();
   }
 
diff --git a/web/sw.js b/web/sw.js
index c79b12c..c71a53c 100644
--- a/web/sw.js
+++ b/web/sw.js
@@ -1,7 +1,7 @@
 /* Service Worker do Notas — caches versionados.
  * BUMP de CACHE em todo deploy que mude shell/assets (o activate limpa os antigos).
  */
-const CACHE = 'notas-shell-v13';
+const CACHE = 'notas-shell-v14';
 const SHELL = [
   '/',
   '/css/app.css',