.top-nav{display:flex;gap:1.5rem;padding:.5rem 1.5rem;background:#fff;border-bottom:1px solid #d8e1ef}.top-nav a{color:#1f2833;text-decoration:none;font-weight:500;font-family:Segoe UI,Trebuchet MS,sans-serif;padding-bottom:2px}.top-nav a.active{color:#0f7a5a;border-bottom:2px solid #0f7a5a}