/* El PNG oficial se conserva intacto. El contenedor omite sus márgenes blancos. */
a.official-brand{position:relative;display:block;flex-shrink:0;width:clamp(220px,25vw,330px);aspect-ratio:1740 / 360;overflow:hidden;background:#fff;border-radius:4px;text-decoration:none}
a.official-brand img{position:absolute;top:0;left:0;display:block;width:117.70115%;height:auto;max-width:none;transform:translate(-7.8125%,-16.6015625%)}
a.official-brand:focus-visible{outline:3px solid #087e7b;outline-offset:4px}
.login-official-brand{display:flex;justify-content:center;margin:.5rem 0 1.5rem}
@media(max-width:650px){.top{flex-wrap:wrap;align-items:center}.top a.official-brand{width:min(270px,76vw)}.top .nav{align-items:center}.login-official-brand a.official-brand{width:min(290px,100%)}}