:root{--validation-ink:#963b30;--validation-surface:#fff0eb;--validation-line:#bd6959}
.checkout-error{margin:1rem 0;padding:1rem;border:1px solid var(--validation-line);border-radius:.75rem;background:var(--validation-surface);color:var(--validation-ink);font-size:.9rem;line-height:1.5}
.checkout .field [aria-invalid=true]{border-color:var(--validation-line);box-shadow:0 0 0 1px var(--validation-line);background:var(--validation-surface)}
.checkout .field-error{color:var(--validation-ink);font-size:.8rem;line-height:1.5;margin:.4rem 0 0}