.tq-auth{display:flex;align-items:center;gap:8px}
.nav-login{color:#0A1B3D;font-weight:700;font-size:13.5px;text-decoration:none;padding:8px 12px;border-radius:999px;white-space:nowrap;transition:color .2s}
.nav-login:hover{color:#1E5BE6}
.nav-signup2{background:linear-gradient(135deg,#2F6BFF,#39C6E0);color:#fff;font-weight:800;font-size:13.5px;text-decoration:none;padding:9px 18px;border-radius:999px;white-space:nowrap;box-shadow:0 6px 18px rgba(0,120,255,.35)}
.nav-signup2:hover{opacity:.92}

@media(max-width:640px){
 header.topbar{flex-wrap:wrap;row-gap:8px;padding:12px 12px}
 .nav-login{display:none}
 .nav-signup2{padding:8px 13px;font-size:12.5px}
 .back-link{padding:8px 12px;font-size:12.5px}
 .logo{font-size:18px}
}