Header logo 32px; drop fixed row heights for pt-5

The first row's h-[70px] / lg:h-25 only existed to give the old large
logo room, so they are replaced with pt-5. Logo is h-8 (32px).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/components/Header.tsx

@@ -27,17 +27,15 @@ export default function Header({
     <header className="sticky top-0 z-40 w-full border-b border-line bg-white">
       <div className="boxed">
         {/* Mobile keeps the header down to the search box alone — account,
-            cart and browsing live in the fixed bottom bar instead. The row
-            is taller on lg so the desktop logo has room without cramming
-            the search box/buttons beside it. */}
-        <div className="flex h-[70px] items-center gap-4 lg:h-25">
+            cart and browsing live in the fixed bottom bar instead. */}
+        <div className="flex items-center gap-4 pt-5">
           <Link href="/" className="hidden shrink-0 lg:block" aria-label={SITE_NAME}>
             <Image
               src={LOGO_SRC}
               alt={SITE_NAME}
               width={LOGO_WIDTH}
               height={LOGO_HEIGHT}
-              className="h-[70px] w-auto object-contain"
+              className="h-8 w-auto object-contain"
               priority
             />
           </Link>