diff --git a/app/index.html b/app/index.html
index a4f5648..9bc91dc 100644
--- a/app/index.html
+++ b/app/index.html
@@ -718,8 +718,8 @@ function render() {
   toolbar.appendChild(el('div', {className:'spacer'}));
 
   // Font size — A− / A+ with a live % label
-  const scales = [0.8, 0.9, 1, 1.12, 1.25];
-  let scaleIdx = 2; // default: 100%
+  const scales = [0.5,0.6,0.7,0.8,0.9,1,1.1,1.2,1.3,1.4,1.5];
+  let scaleIdx = 5; // default: 100%
   const szLabel = el('span', {style:'font-size:12px;color:var(--text-muted);font-family:var(--font-mono)'}, '100%');
   const sizeSeg = el('div', {className:'kb-seg', role:'group', 'aria-label':'Text size'});
   const szDown = el('button', {type:'button', 'aria-label':'Smaller text'}, 'A−');