/* ═══ Cabecera ═══════════════════════════════════════════ */
.amh{position:sticky;top:0;z-index:200;background:rgba(255,255,255,.78);backdrop-filter:var(--glass-medium);-webkit-backdrop-filter:var(--glass-medium);border-bottom:1px solid transparent;transition:border-color .3s var(--ease),box-shadow .3s var(--ease)}
.amh.is-stuck{border-bottom-color:var(--n100);box-shadow:0 1px 20px rgba(0,0,0,.04)}
.amh-bar{max-width:1200px;margin:0 auto;padding:0 32px;height:70px;display:flex;align-items:center;gap:32px}
.amh-logo{flex-shrink:0}

.amh-nav{display:flex;align-items:center;gap:6px;margin-right:auto}
.amh-nav a{padding:8px 14px;border-radius:var(--r-pill);font-size:14.5px;font-weight:500;color:var(--n600);transition:all .2s var(--ease)}
.amh-nav a:hover{color:var(--n900);background:var(--n50)}
.amh-nav a.is-on{color:var(--n950);font-weight:600;background:var(--n75)}

.amh-right{display:flex;align-items:center;gap:12px;flex-shrink:0}
.amh-lang{display:inline-flex;gap:1px;padding:3px;border-radius:var(--r-pill);background:var(--n75)}
.amh-lang a{padding:4px 10px;border-radius:var(--r-pill);font-size:11.5px;font-weight:700;letter-spacing:.04em;color:var(--n400);transition:all .2s var(--ease)}
.amh-lang a.is-on{background:var(--n0);color:var(--n900);box-shadow:var(--sh-sm)}
.amh-web{font-size:14.5px;font-weight:600;color:var(--n700);padding:8px 4px}
.amh-web:hover{color:var(--t600)}
.amh-cta{padding:10px 20px;font-size:14px}

.amh-burger{display:none;width:38px;height:38px;border-radius:10px;flex-direction:column;align-items:center;justify-content:center;gap:5px;background:var(--n50)}
.amh-burger span{display:block;width:17px;height:2px;border-radius:2px;background:var(--n800);transition:transform .3s var(--ease),opacity .2s}
.amh-burger[aria-expanded="true"] span:first-child{transform:translateY(3.5px) rotate(45deg)}
.amh-burger[aria-expanded="true"] span:last-child{transform:translateY(-3.5px) rotate(-45deg)}

.amh-mob{display:none;flex-direction:column;padding:10px 20px 22px;border-top:1px solid var(--n100);background:var(--n0)}
.amh-mob a{padding:14px 4px;font-size:17px;font-weight:600;color:var(--n700);border-bottom:1px solid var(--n75)}
.amh-mob a.is-on{color:var(--t700)}
.amh-mob-b{padding-top:20px;display:flex;flex-direction:column;gap:16px;align-items:stretch}
.amh-mob-b .aiden-btn{width:100%}
.amh-lang--mob{align-self:center;background:var(--n75)}
.amh-lang--mob a{border:none;padding:6px 16px;font-size:13px;letter-spacing:0}

@media (max-width:940px){
  .amh-nav,.amh-web,.amh-lang{display:none}
  .amh-burger{display:flex}
  .amh-bar{gap:16px;padding:0 20px;height:64px}
  .amh-logo{margin-right:auto}
  .amh-mob[hidden]{display:none}
  .amh-mob{display:flex}
}
@media (max-width:420px){
  .amh-cta{display:none}
}