.stack{gap:16px;width:100%;max-width:540px;display:grid}.promo{text-align:left;align-items:center;gap:18px;padding:18px 22px;display:flex}.promo h2{margin-bottom:4px}.promo p{color:var(--muted);font-size:13px}.promo .btn{white-space:nowrap;flex:none;text-decoration:none}@media (max-width:520px){.promo{text-align:center;flex-direction:column;align-items:stretch}}