liveline: match benji.org inline code style with ::before background pill

Inline code now uses a subtle rgba(0,0,0,0.04) background pill via a ::before
pseudo-element with absolute inset and 4px border-radius, matching
benji.org/liveline exactly. Dark mode uses rgba(255,255,255,0.08).
Moved styles from inline to CSS class .ll-inline-code.

website/src/routes/liveline.tsx

@@ -382,16 +382,7 @@ function CodeBlock({ children, lang = "jsx" }: { children: string; lang?: string
 
 function InlineCode({ children }: { children: React.ReactNode }) {
   return (
-    <code
-      style={{
-        fontFamily: "var(--ll-font-code)",
-        fontSize: "12.25px",
-        fontWeight: 475,
-        lineHeight: "12.25px",
-        letterSpacing: "-0.09px",
-        padding: "0 4px",
-      }}
-    >
+    <code className="ll-inline-code">
       {children}
     </code>
   );