Show an on-screen success message instead of emailing visitors

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/components/content/contact-form.tsx

@@ -33,12 +33,12 @@ export default function ContactForm() {
   if (state.status === "sent") {
     return (
       <div className="contact-form form-sent" role="status">
-        <span className="card-num">Received</span>
-        <h3 className="card-title">Thanks — your message is with the team.</h3>
-        <p className="copy">
-          We’ll review what you shared and get back to you shortly.
-          {state.copySent && " A confirmation with a copy of your message is on its way to your inbox."}
-        </p>
+        <svg className="sent-mark" viewBox="0 0 48 48" aria-hidden="true">
+          <circle cx="24" cy="24" r="23" />
+          <path d="M14 24.5l7 7 13-14" />
+        </svg>
+        <h3 className="card-title">Your message was sent successfully.</h3>
+        <p className="copy">Thank you for reaching out. Our team will review what you shared and get back to you shortly.</p>
       </div>
     );
   }