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768px){.scientific{background-image:none}.sci__img{display:block;position:absolute;top:-30%;right:0;bottom:-30%;left:0;background-image:url(/img/chirurgia.jpg);background-size:cover;background-position:center center;will-change:transform;pointer-events:none}.nav__hamburger{display:flex}.nav__menu{position:fixed;top:var(--nav-h);left:0;right:0;flex-direction:column;align-items:stretch;gap:0;padding:1.5rem;background:#040d1af7;backdrop-filter:blur(22px);-webkit-backdrop-filter:blur(22px);border-bottom:1px solid var(--border);opacity:0;pointer-events:none;transform:translateY(-10px);transition:opacity var(--tr),transform var(--tr)}.nav__menu.open{opacity:1;pointer-events:auto;transform:translateY(0)}.nav__link{padding:1rem 1.25rem;font-size:1rem;border-radius:var(--r-m);border-bottom:1px solid var(--border)}.nav__menu li:last-child .nav__link{border-bottom:none}.nav__cta{margin-top:1rem;justify-content:center}.section{padding:4rem 0}.about__grid{grid-template-columns:1fr}.about__exp-badge{bottom:-14px;right:5%}.services__grid,.contact__grid{grid-template-columns:1fr}.info-card{position:static}.cform__row{grid-template-columns:1fr}.footer__grid{grid-template-columns:1fr;gap:2rem}.hero__actions{flex-direction:column;align-items:stretch;max-width:300px;margin:0 auto}.pub{flex-direction:column;gap:.5rem}.btt{bottom:1.5rem;right:1rem}}@media (max-width: 480px){.container{padding:0 1rem}.stats{grid-template-columns:1fr 1fr}.stat{padding:2rem 1rem}}