diff --git a/src/renderer/src/assets/terminal.css b/src/renderer/src/assets/terminal.css
index 92c0868929b..64d7d9723c7 100644
--- a/src/renderer/src/assets/terminal.css
+++ b/src/renderer/src/assets/terminal.css
@@ -360,6 +360,13 @@
   pointer-events: auto;
 }
 
+.pane-title-bar[data-chromeless] .pane-title-split-trigger,
+.pane-title-bar[data-chromeless] .pane-title-close {
+  /* Why: these controls intentionally overlap row-one terminal text. The
+     button surface must be opaque, not just the icon stroke. */
+  background: var(--orca-pane-title-bg, var(--background));
+}
+
 .pane-title-close {
   flex-shrink: 0;
   margin-left: auto;
@@ -407,6 +414,17 @@
   color: var(--orca-pane-title-button-hover-fg, rgb(255 255 255 / 0.8));
 }
 
+.pane-title-bar[data-chromeless] .pane-title-close:hover,
+.pane-title-bar[data-chromeless] .pane-title-close:active,
+.pane-title-bar[data-chromeless] .pane-title-close[data-state='delayed-open'],
+.pane-title-bar[data-chromeless] .pane-title-close[data-state='instant-open'],
+.pane-title-bar[data-chromeless] .pane-title-split-trigger:hover,
+.pane-title-bar[data-chromeless] .pane-title-split-trigger:active,
+.pane-title-bar[data-chromeless] .pane-title-split-trigger[data-state='delayed-open'],
+.pane-title-bar[data-chromeless] .pane-title-split-trigger[data-state='instant-open'] {
+  background: var(--orca-pane-title-bg, var(--background));
+}
+
 /* Inline edit input — matches the title text styling exactly to prevent
    layout shift. A subtle bottom border indicates active edit mode. */
 /* When inline-editing, remove the bar's side padding so the input