diff --git a/src/components/Posts/PostMenu.astro b/src/components/Posts/PostMenu.astro
index a2fd2fc..e893d02 100644
--- a/src/components/Posts/PostMenu.astro
+++ b/src/components/Posts/PostMenu.astro
@@ -181,7 +181,7 @@ const tocHeadings = headings.filter((h) => h.depth === 2 || h.depth === 3);
             z-index: 30;
             max-width: min(78vw, 22rem);
             padding: 0.6rem 0.75rem;
-            border: 1.5px solid #536493;
+            border: 1.5px solid var(--deep-blue);
             border-radius: 999px;
             background: rgba(255, 255, 255, 0.92);
             backdrop-filter: blur(6px);
@@ -230,7 +230,7 @@ const tocHeadings = headings.filter((h) => h.depth === 2 || h.depth === 3);
             max-height: min(65vh, 32rem);
             overflow: auto;
             padding: 0.9rem 1rem;
-            border: 1.5px solid rgba(128, 128, 128, 0.55);
+            border: 1.5px solid var(--deep-blue);
             background: rgba(255, 255, 255, 0.96);
             backdrop-filter: blur(8px);
             box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);