/* Barra de navegación común (Inicio, Lecciones, Mesa, Calculadoras). Colores fijos para no depender de cada página. */
.esc-nav{position:sticky;top:0;z-index:50;background:#12432F;color:#E9F3EE;border-bottom:1px solid rgba(255,255,255,.08);font-family:"IBM Plex Sans","Segoe UI",system-ui,sans-serif;line-height:1.4}
.esc-nav .in{max-width:1180px;margin:0 auto;padding:8px 16px;display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.esc-brand{display:flex;align-items:center;gap:8px;color:#E9F3EE;text-decoration:none;font-family:"Bricolage Grotesque","Segoe UI",system-ui,sans-serif;font-weight:800;font-size:17px;white-space:nowrap}
.esc-brand img{width:28px;height:28px;border-radius:7px;display:block}
.esc-links{display:flex;gap:4px;flex-wrap:wrap;margin-left:auto}
.esc-links a{color:#A9C9BA;text-decoration:none;font-weight:600;font-size:14px;padding:6px 10px;border-radius:8px}
.esc-links a:hover{color:#fff;background:rgba(255,255,255,.08)}
.esc-links a[aria-current="page"]{color:#fff;background:rgba(255,255,255,.14)}
.esc-links a:focus-visible{outline:2px solid #E7B653;outline-offset:2px}
@media (max-width:560px){.esc-links{margin-left:0;width:100%;justify-content:space-between}.esc-links a{padding:6px;font-size:13px}}