body.login { display: grid; place-items: center; min-height: 100vh; padding: 16px; }
.caja { width: min(360px, 100%); }
.caja .marca { font-size: 22px; margin-bottom: 4px; }
.caja .sub { color: var(--ink-3); margin: 0 0 26px; font-size: 14px; }
.caja .boton { width: 100%; padding: 10px; font-size: 15px; margin-top: 6px; }
.caja .error { color: var(--rojo); font-size: 14px; min-height: 20px; }