.skip-link {
  position: fixed;
  z-index: 1000;
  top: var(--space-3);
  left: var(--space-3);
  padding: var(--space-3) var(--space-4);
  color: var(--ink);
  background: var(--cyan-2);
  border-radius: var(--radius-sm);
  transform: translateY(calc(-100% - var(--space-5)));
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  border-bottom: 1px solid transparent;
  background: rgba(7, 19, 31, 0.82);
  backdrop-filter: blur(18px);
}
.site-header.is-scrolled { border-color: var(--border); box-shadow: 0 8px 30px rgba(0,0,0,.18); }
.site-header__inner { display: flex; min-height: 4.75rem; align-items: center; justify-content: space-between; gap: var(--space-5); }
.brand { display: inline-flex; align-items: center; flex: 0 0 auto; }
.brand img { width: clamp(8.7rem, 14vw, 10.7rem); height: auto; }

.menu-toggle {
  display: grid;
  width: 2.85rem;
  height: 2.85rem;
  padding: 0.72rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--card);
  place-content: center;
  gap: 0.28rem;
  cursor: pointer;
}
.menu-toggle span { display: block; width: 1.25rem; height: 2px; background: currentColor; transition: transform 180ms ease, opacity 180ms ease; }
.menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(6px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-6px) rotate(-45deg); }

.site-nav {
  position: absolute;
  top: calc(100% + 1px);
  right: 1rem;
  left: 1rem;
  display: block;
  padding: var(--space-5);
  border: 1px solid var(--border);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  background: rgba(10, 25, 40, 0.98);
  box-shadow: var(--shadow-md);
}
.js .site-nav { display: none; }
.js .site-nav.is-open { display: block; }
.site-nav__list { display: grid; gap: 0.25rem; }
.site-nav__list a { display: block; padding: 0.7rem 0.75rem; color: var(--muted); font-size: 0.92rem; font-weight: 650; text-decoration: none; border-radius: 0.5rem; }
.site-nav__list a:hover, .site-nav__list a[aria-current="page"] { color: var(--text); background: rgba(255,255,255,.045); }
.site-nav__list a[aria-current="page"] { box-shadow: inset 2px 0 var(--cyan); }
.site-nav__cta { width: 100%; margin-top: var(--space-4); }
.nav-dropdown summary { display: flex; align-items: center; justify-content: space-between; gap: .4rem; padding: .7rem .75rem; color: var(--muted); border-radius: .5rem; font-size: .92rem; font-weight: 650; cursor: pointer; list-style: none; }
.nav-dropdown summary::-webkit-details-marker { display: none; }
.nav-dropdown summary:hover, .nav-dropdown[open] summary { color: var(--text); background: rgba(255,255,255,.045); }
.nav-dropdown summary span { transition: transform 180ms ease; }
.nav-dropdown[open] summary span { transform: rotate(180deg); }
.nav-dropdown ul { display: grid; gap: .15rem; margin: .2rem 0 .45rem; padding: .35rem; border-left: 1px solid var(--border); }
.nav-dropdown ul a { font-size: .82rem; font-weight: 600; }

.button {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 0.75rem 1.15rem;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 800;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease, background-color 180ms ease;
}
.button:hover { transform: translateY(-2px); }
.button:active { transform: translateY(0); }
.button--primary { color: #06121d; background: var(--gradient-brand); box-shadow: 0 10px 28px rgba(23,107,255,.25); }
.button--primary:hover { box-shadow: 0 14px 34px rgba(22,216,232,.24); }
.button--secondary { color: var(--text); border-color: var(--border); background: rgba(255,255,255,.035); }
.button--secondary:hover { border-color: rgba(122,242,247,.42); background: rgba(255,255,255,.07); }
.button:disabled, .button[aria-disabled="true"] { opacity: .55; pointer-events: none; }
.button-group { display: flex; flex-wrap: wrap; gap: var(--space-3); }

.badge { display: inline-flex; width: fit-content; align-items: center; padding: 0.32rem 0.65rem; color: var(--cyan-2); border: 1px solid rgba(22,216,232,.22); border-radius: 999px; background: rgba(22,216,232,.08); font-size: 0.68rem; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; }
.badge--success { color: #83f0a8; border-color: rgba(34,197,94,.25); background: rgba(34,197,94,.1); }
.badge--info { color: #b3c4ff; border-color: rgba(108,140,255,.25); background: rgba(108,140,255,.1); }
.badge--light { color: var(--primary-2); border-color: rgba(23,107,255,.18); background: rgba(23,107,255,.08); }

.text-link { display: inline-flex; width: fit-content; align-items: center; gap: .5rem; color: var(--cyan-2); font-weight: 800; text-decoration: none; }
.text-link:hover { text-decoration: underline; }
.text-link--dark { color: var(--primary-2); }

.premium-icon { position: relative; display: grid; width: 3.65rem; height: 3.65rem; padding: .85rem; border: 1px solid rgba(122,242,247,.2); border-radius: var(--radius-md); background: linear-gradient(145deg, rgba(23,107,255,.28), rgba(22,216,232,.1)); box-shadow: 0 12px 30px rgba(23,107,255,.16); overflow: hidden; place-items: center; }
.premium-icon::before { position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px), linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px); background-size: 8px 8px; content: ""; }
.premium-icon img { position: relative; width: 2rem; height: 2rem; transition: transform 180ms ease; }
.service-card:hover .premium-icon, .path-card:hover .premium-icon { box-shadow: var(--shadow-glow); }
.service-card:hover .premium-icon img, .path-card:hover .premium-icon img { transform: scale(1.08) rotate(-2deg); }

.faq { border-top: 1px solid var(--border); }
.faq__item { border-bottom: 1px solid var(--border); }
.faq__item h3 { margin: 0; }
.faq__item button { display: flex; width: 100%; align-items: center; justify-content: space-between; gap: var(--space-4); padding: 1.3rem 0; border: 0; background: transparent; font-weight: 750; text-align: left; cursor: pointer; }
.faq__item button span { display: grid; width: 2rem; height: 2rem; flex: 0 0 auto; color: var(--cyan-2); border: 1px solid var(--border); border-radius: 50%; place-items: center; }
.faq__answer { padding: 0 2.75rem 1.35rem 0; color: var(--muted); }
.faq__answer[hidden] { display: none; }

.site-footer { padding-top: clamp(3.5rem, 7vw, 5.5rem); color: var(--muted); border-top: 1px solid var(--border); background: #050e17; }
.site-footer__grid { display: grid; gap: var(--space-7); }
.site-footer__brand { display: grid; align-content: start; gap: var(--space-4); }
.site-footer h2 { margin-bottom: var(--space-4); font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; }
.site-footer ul { display: grid; gap: .65rem; }
.site-footer a { color: var(--muted); font-size: .9rem; text-decoration: none; }
.site-footer a:hover { color: var(--text); }
.site-footer__bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--space-3); margin-top: var(--space-7); padding-block: var(--space-5); border-top: 1px solid var(--border); font-size: .78rem; }
.contact-dock {
  position: fixed;
  z-index: 90;
  right: max(1rem, env(safe-area-inset-right));
  bottom: max(1rem, env(safe-area-inset-bottom));
}
.contact-dock__whatsapp { display: block; width: 3.65rem; height: 3.65rem; padding: 2px; border: 2px solid rgba(255,255,255,.78); border-radius: 50%; background: #25d366; box-shadow: 0 14px 34px rgba(0,0,0,.34); transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease; }
.contact-dock__whatsapp img { width: 100%; height: 100%; }
.contact-dock__whatsapp:hover { border-color: #fff; transform: translateY(-3px) scale(1.06) rotate(-3deg); box-shadow: 0 18px 40px rgba(37,211,102,.34); }
.contact-dock__whatsapp:focus-visible { outline: 3px solid var(--cyan-2); outline-offset: 4px; }
.site-footer__social { display: flex; width: min(calc(100% - 2rem), var(--content-max)); align-items: center; gap: .65rem; margin: var(--space-6) auto 0; }
.site-footer__social > span { margin-right: .25rem; color: var(--muted); font-size: .78rem; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; }
.site-footer .site-footer__social-link { display: inline-flex; width: 2.65rem; height: 2.65rem; align-items: center; justify-content: center; border-radius: 50%; box-shadow: 0 8px 22px rgba(0,0,0,.22); transition: transform 180ms ease; }
.site-footer .site-footer__social-link:hover { transform: translateY(-2px); }
.site-footer__social-link img { width: 100%; height: 100%; }

@media (min-width: 64rem) {
  .menu-toggle { display: none; }
  .site-nav, .js .site-nav { position: static; display: flex; align-items: center; gap: var(--space-5); padding: 0; border: 0; background: transparent; box-shadow: none; }
  .site-nav__list { display: flex; align-items: center; gap: .1rem; }
  .site-nav__list a { padding: .6rem .55rem; font-size: .8rem; }
  .nav-dropdown { position: relative; }
  .nav-dropdown summary { padding: .6rem .55rem; font-size: .8rem; }
  .nav-dropdown ul { position: absolute; z-index: 10; top: calc(100% + .55rem); left: 0; width: 17rem; margin: 0; padding: .5rem; border: 1px solid var(--border); border-radius: var(--radius-sm); background: rgba(10,25,40,.98); box-shadow: var(--shadow-md); }
  .nav-dropdown ul a { padding: .65rem .7rem; font-size: .78rem; }
  .site-nav__list a[aria-current="page"] { box-shadow: inset 0 -2px var(--cyan); }
  .site-nav__cta { width: auto; margin: 0; }
  .site-footer__grid { grid-template-columns: minmax(16rem, 1.5fr) repeat(3, minmax(9rem, .65fr)); }
}