diff --git a/src/components/site-banner.tsx b/src/components/site-banner.tsx
deleted file mode 100644
index 83656acf..00000000
--- a/src/components/site-banner.tsx
+++ /dev/null
@@ -1,55 +0,0 @@
-"use client";
-
-import Link from "next/link";
-import { X } from "lucide-react";
-import { useEffect, useState } from "react";
-
-const STORAGE_KEY = "ocb-banner-dismissed-v1";
-
-/**
- * Top sticky notification banner. Persists dismissal in localStorage so it
- * doesn't reappear on every navigation.
- */
-export function SiteBanner() {
-  const [hidden, setHidden] = useState(false);
-
-  useEffect(() => {
-    try {
-      if (window.localStorage.getItem(STORAGE_KEY) === "1") setHidden(true);
-    } catch {
-      // ignore
-    }
-  }, []);
-
-  if (hidden) return null;
-
-  return (
-    <div className="bg-banner py-2.5 px-4 relative flex items-center justify-center text-[11px] sm:text-[13px] text-banner-ink text-center pr-10">
-      <span>
-        The first decentralized benchmark network for crypto infrastructure is live.{" "}
-        <br className="sm:hidden" />
-        <Link
-          href="/benchmarks"
-          className="text-banner-link hover:underline underline-offset-2"
-        >
-          Read the announcement.
-        </Link>
-      </span>
-      <button
-        type="button"
-        aria-label="Dismiss"
-        onClick={() => {
-          try {
-            window.localStorage.setItem(STORAGE_KEY, "1");
-          } catch {
-            // ignore
-          }
-          setHidden(true);
-        }}
-        className="absolute right-4 top-1/2 -translate-y-1/2 text-ink-muted hover:text-ink transition-colors"
-      >
-        <X className="w-4 h-4" strokeWidth={1.5} />
-      </button>
-    </div>
-  );
-}
diff --git a/src/components/site-header.tsx b/src/components/site-header.tsx
index 7d11b1b8..712f67e4 100644
--- a/src/components/site-header.tsx
+++ b/src/components/site-header.tsx
@@ -3,7 +3,6 @@
 import { Menu, X } from "lucide-react";
 import Link from "next/link";
 import { useEffect, useRef, useState } from "react";
-import { SiteBanner } from "@/components/site-banner";
 import { SiteLogoSwitcher } from "@/components/site-logo-switcher";
 import { ThemeToggle } from "@/components/theme-toggle";
 
@@ -26,9 +25,9 @@ const NAV = [
 export function SiteHeader() {
   const [open, setOpen] = useState(false);
   const headerRef = useRef<HTMLDivElement>(null);
-  // Sensible initial estimate (banner + nav + iOS safe area) so the page
-  // does not jump on first paint; ResizeObserver refines it after mount.
-  const [headerH, setHeaderH] = useState(96);
+  // Initial estimate matches the rendered header height so the spacer
+  // doesn't jump on first paint; ResizeObserver refines it after mount.
+  const [headerH, setHeaderH] = useState(64);
 
   // Close the mobile menu when the viewport crosses md so the dropdown
   // doesn't stick around as the desktop nav reappears.
@@ -43,8 +42,7 @@ export function SiteHeader() {
   }, [open]);
 
   // Measure the fixed header so we can reserve the same height in the
-  // flow with a spacer. ResizeObserver picks up the change when the
-  // banner is dismissed or the viewport resizes.
+  // flow with a spacer. ResizeObserver picks up viewport resizes.
   useEffect(() => {
     const el = headerRef.current;
     if (!el) return;
@@ -68,7 +66,6 @@ export function SiteHeader() {
         className="fixed top-0 left-0 right-0 z-50 flex flex-col font-sans pt-[env(safe-area-inset-top)] bg-surface"
         style={{ transform: "translate3d(0, 0, 0)" }}
       >
-      <SiteBanner />
       <header className="border-b border-rule py-4 md:py-5 px-4 sm:px-6 shrink-0 text-sm bg-surface relative">
         <div className="max-w-[1400px] mx-auto flex items-center justify-between gap-3">
           <div className="flex items-center gap-2">
@@ -155,9 +152,7 @@ export function SiteHeader() {
       </header>
       </div>
       {/* Spacer reserves the fixed header's height in the document flow
-          so page content does not start under it. Height tracks the
-          header via ResizeObserver, so dismissing the banner reclaims
-          the freed space automatically. */}
+          so page content does not start under it. */}
       <div aria-hidden style={{ height: headerH }} />
     </>
   );