/* ── Layout premium ─────────────────────────────────────── */

/* ── Cursor personalizado ── */
.cursor {
  position: fixed;
  width: 7px;
  height: 7px;
  background: var(--color-text);
  border-radius: 50%;
  pointer-events: none;
  z-index: 10000;
  transform: translate(-50%, -50%);
  transition: transform var(--dur-fast), background var(--dur-fast), width var(--dur-base) var(--ease-out), height var(--dur-base) var(--ease-out);
}
.cursor.is-hovering {
  width: 48px;
  height: 48px;
  background: transparent;
  border: 1px solid var(--color-text);
  mix-blend-mode: difference;
}
.cursor-ring {
  position: fixed;
  width: 40px;
  height: 40px;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: transform .12s var(--ease-out);
}
/* Engrane (cursor): el SVG gira; el contenedor solo posiciona */
.cursor-gear {
  display: block;
  width: 100%;
  height: 100%;
  fill: var(--color-gold);
  opacity: .55;
  transform-origin: 50% 50%;
  will-change: transform;
}

/* ── Contenedores ── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: clamp(var(--space-6), 5vw, var(--space-16));
}
.container--narrow { max-width: var(--container-narrow); }

/* ── Header ── */
.site-header {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  height: var(--header-h);
  z-index: 100;
  /* Scrim oscuro arriba: mantiene legible el texto blanco del menú sobre
     cualquier fondo (claro u oscuro), sin invertir colores. */
  background: linear-gradient(to bottom,
              rgba(6, 7, 11, .72) 0%,
              rgba(6, 7, 11, .35) 55%,
              rgba(6, 7, 11, 0) 100%);
  transition: background var(--dur-base, 300ms) var(--ease-out, ease);
}
.site-header.has-bg {
  background: rgba(8, 8, 8, .92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: .1em;
  color: var(--color-white);
}
/* Logo a color, sin texto. Chip claro rectangular para que el escudo azul
   marino (#1a2744) se vea sobre el fondo oscuro; object-fit evita deformación. */
/* Logo institucional (ASIMET/Bicentenario), ancho como en lichan.cl. Se respeta
   su proporción (width:auto) sobre un chip claro para que el texto oscuro del
   logo se lea sobre el header oscuro. */
.nav__brand img {
  height: 42px;
  width: auto;
  flex-shrink: 0;
  object-fit: contain;
  background: #fff;
  border-radius: 8px;
  padding: 4px 9px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, .25);
}
@media (max-width: 520px) {
  .nav__brand img { height: 34px; padding: 3px 7px; }
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px; height: 40px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
}
.nav__toggle-bar {
  display: block;
  width: 22px; height: 1px;
  background: var(--color-white);
  transition: transform var(--dur-base) var(--ease-snap), opacity var(--dur-base);
}

/* ── Submenús desplegables del menú (one-page vs páginas estáticas) ── */
.nav__item {
  position: relative;
  list-style: none;
  display: flex;
  align-items: center;
}
.nav__caret {
  background: none;
  border: none;
  color: var(--color-white);
  cursor: pointer;
  font-size: .7em;
  line-height: 1;
  padding: 0 .15rem;
  opacity: .8;
  transition: transform var(--dur-base) var(--ease-snap);
}
.nav__item--has-sub.is-open .nav__caret { transform: rotate(180deg); }

.nav__submenu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 230px;
  margin: .5rem 0 0;
  padding: .4rem;
  list-style: none;
  /* Panel siempre opaco y aislado: nunca se mezcla con el fondo del header. */
  background: #0b0e15;
  mix-blend-mode: normal;
  isolation: isolate;
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: var(--radius-md);
  box-shadow: 0 14px 36px rgba(0, 0, 0, .45);
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: opacity var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-out),
              visibility var(--dur-base);
  z-index: 60;
}
/* Escritorio: abrir con hover. */
@media (hover: hover) {
  .nav__item--has-sub:hover .nav__submenu {
    opacity: 1; visibility: visible; transform: none;
  }
}
/* Móvil / clic: abrir con .is-open (lo activa menu.js). */
.nav__item--has-sub.is-open .nav__submenu {
  opacity: 1; visibility: visible; transform: none;
}
.nav__sublink {
  display: block;
  padding: .55rem .75rem;
  color: var(--color-white);
  text-decoration: none;
  font-size: .95rem;
  white-space: nowrap;
  border-radius: var(--radius-sm);
  transition: background var(--dur-base), color var(--dur-base);
}
.nav__sublink:hover { background: rgba(255, 255, 255, .08); color: var(--color-accent); }

/* ── Hero ── */
.hero {
  position: relative;
  width: 100%;
  height: 100svh;
  min-height: 600px;
  overflow: hidden;
  background: transparent;   /* deja ver la escena 3D fija detrás */
}

/* Overlay — oscurece la foto para legibilidad, mantiene el drama visual */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 2;
  background:
    linear-gradient(to bottom, rgba(8,8,8,.75) 0%, rgba(8,8,8,.25) 40%, rgba(8,8,8,.55) 100%),
    linear-gradient(105deg,
      rgba(8,8,8,.88) 0%,
      rgba(8,8,8,.60) 45%,
      rgba(8,8,8,.20) 100%
    );
  pointer-events: none;
}

/* Texto fantasma LICHAN — elemento editorial de profundidad */
.hero::after {
  content: 'LICHAN';
  position: absolute;
  right: -0.04em;
  bottom: -0.14em;
  z-index: 2;
  font-family: var(--font-display);
  font-size: clamp(14rem, 30vw, 32rem);
  line-height: 1;
  letter-spacing: -.02em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(200,168,76,.07);
  pointer-events: none;
  user-select: none;
}

/* ── FONDO FIJO DE TODA LA PÁGINA ──────────────────────────
   Fotos a pantalla completa que se funden entre sí con el scroll. */
.page-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: var(--color-bg);
  overflow: hidden;
}
.page-bg__slides { position: absolute; inset: 0; }
.page-bg__slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transform: scale(1.06);
  will-change: opacity, transform;
  transition: opacity .25s linear;   /* suaviza saltos entre frames de scroll */
}
.page-bg__slide.is-active { opacity: 1; }   /* estado inicial antes del JS */

/* Video de fondo (vista aérea). Va SOBRE las fotos (que el JS marca con
   z-index:1); si no carga, se oculta y quedan las fotos de fallback. */
.page-bg__video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  z-index: 2;                 /* por encima de las fotos (z-index 0/1 vía JS) */
  transform: scale(1.18);
  will-change: transform, opacity;
  transition: opacity 1s ease;
}
.page-bg__video.is-ready { opacity: 1; }

/* Velo frío sobre el fondo para dar contraste al contenido (más tenue para
   que el video se aprecie mejor). */
.page-bg__veil {
  position: absolute;
  inset: 0;
  z-index: 3;                 /* siempre por encima del video y las fotos */
  background:
    linear-gradient(180deg, rgba(6,7,11,.26) 0%, rgba(6,7,11,.12) 45%, rgba(6,7,11,.44) 100%),
    radial-gradient(120% 80% at 70% 30%, rgba(6,7,11,0) 0%, rgba(6,7,11,.18) 100%);
}

/* El contenido vive por encima del fondo fijo */
main,
.site-footer { position: relative; z-index: 1; }

/* Respeta usuarios que prefieren menos movimiento */
@media (prefers-reduced-motion: reduce) {
  .page-bg__slide { transition: opacity .4s linear; }
}

/* Contenido: tres zonas — top / center / bottom */
.hero__content {
  position: relative;
  z-index: 3;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
  padding: calc(var(--header-h) + clamp(1.5rem, 3vh, 2.5rem))
           clamp(var(--space-8), 7vw, var(--space-24))
           clamp(var(--space-8), 4vh, var(--space-16));
}

/* Fila superior: tags de contexto */
.hero__top {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}
.hero__tag {
  font-size: var(--text-xs);
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  position: relative;
}
.hero__tag + .hero__tag::before {
  content: '/';
  position: absolute;
  left: calc(-1 * var(--space-4) - 2px);
  color: var(--color-text-dim);
}

/* Zona central: heading + sub */
.hero__center {
  max-width: min(780px, 62vw);
}

/* Fila inferior: CTA + scroll */
.hero__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.hero__scroll {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--text-xs);
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.hero__scroll-line {
  width: 40px;
  height: 1px;
  background: var(--color-text-muted);
  transform-origin: left;
  animation: scaleX 1.5s var(--ease-out) infinite alternate;
}

/* ── Marquee ── */
.marquee-band {
  overflow: hidden;
  border-block: 1px solid var(--color-border);
  padding-block: var(--space-4);
  background: var(--color-surface);
  user-select: none;
}
.marquee {
  display: flex;
  white-space: nowrap;
}
.marquee__track {
  display: flex;
  gap: 0;
  animation: marquee 25s linear infinite;
  flex-shrink: 0;
}
.marquee-band:hover .marquee__track { animation-play-state: paused; }
.marquee__item {
  font-family: var(--font-display);
  font-size: clamp(var(--text-lg), 2vw, var(--text-2xl));
  letter-spacing: .08em;
  color: var(--color-text-muted);
  padding-inline: var(--space-8);
  transition: color var(--dur-base);
}
.marquee__item:hover { color: var(--color-text); }
.marquee__sep { color: var(--color-gold); padding-inline: var(--space-4); }

/* ── Stats section ── */
.stats-section {
  padding-block: var(--section-pad);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--color-border);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}
/* En pantallas medianas, 2×2 para que las cifras no se aprieten. */
@media (max-width: 900px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid .stat-item:nth-child(2) { border-right: none; }
}
.stat-item {
  padding: var(--space-12) clamp(var(--space-8), 5vw, var(--space-16));
  border-right: 1px solid var(--color-border);
  position: relative;
}
.stat-item:last-child { border-right: none; }

.stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-d3);
  line-height: .9;
  color: var(--color-text);
  letter-spacing: -.01em;
}
.stat-unit {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-xl);
  letter-spacing: .05em;
  color: var(--color-gold);
  margin-block: var(--space-2) var(--space-4);
  text-transform: uppercase;
}
.stat-item > p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: 20ch;
  line-height: 1.5;
}

/* ── Bloque Manifesto ── */
.manifesto {
  overflow: hidden;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding-block: clamp(var(--space-16), 8vw, 8rem);
}
.manifesto__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0 clamp(var(--space-8), 4vw, var(--space-20));
  padding-inline: clamp(var(--space-8), 6vw, var(--space-20));
}
.manifesto__word {
  font-family: var(--font-display);
  font-size: var(--text-d2);
  color: var(--color-text);
  letter-spacing: .02em;
  line-height: .95;
  transition: color var(--dur-slow);
}
.manifesto__word.accent { color: var(--color-gold); }
.manifesto__sep {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 4rem);
  color: var(--color-text-dim);
  line-height: 1;
}
.manifesto:hover .manifesto__word { color: var(--color-text-muted); }
.manifesto:hover .manifesto__word.accent { color: var(--color-gold); }

/* ── Secciones genéricas ── (vidrio: dejan ver la escena 3D detrás) */
.section {
  padding-block: var(--section-pad);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}
.section--surface  { background: var(--glass-surface); }
.section--surface2 { background: var(--glass-surface-2); }

.section__label {
  font-size: var(--text-xs);
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-6);
}
.section__heading {
  font-size: var(--text-d2);
  color: var(--color-text);
  margin-bottom: var(--space-10);
}

/* ── About (texto + timeline) ── */
.about-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-12), 8vw, var(--space-32));
  align-items: start;
}
.about-body {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: var(--space-6);
}
.about-body strong { color: var(--color-text); font-weight: 400; }

/* ── Timeline ── */
.timeline { margin-top: var(--space-10); }
.timeline__item {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: var(--space-6);
  padding-bottom: var(--space-8);
  position: relative;
}
.timeline__item::before {
  content: '';
  position: absolute;
  left: 28px;
  top: 30px;
  bottom: 0;
  width: 1px;
  background: var(--color-border);
}
.timeline__item:last-child::before { display: none; }
.timeline__year {
  font-family: var(--font-display);
  font-size: var(--text-md);
  color: var(--color-gold);
  padding-top: var(--space-1);
  z-index: 1;
  background: var(--color-surface);
  width: 56px;
  text-align: center;
  height: fit-content;
}
.timeline__desc { font-size: var(--text-sm); color: var(--color-text-muted); padding-top: var(--space-2); line-height: 1.6; }

/* ── Especialidades stacked ── */
.specialties-stack { display: flex; flex-direction: column; }
.specialty-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 65vh;
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
}
.specialty-row:nth-child(even) { direction: rtl; }
.specialty-row:nth-child(even) > * { direction: ltr; }

.specialty-row__text {
  padding: clamp(var(--space-12), 7vw, var(--space-24)) clamp(var(--space-8), 5vw, var(--space-16));
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--space-5);
  background: var(--color-surface);
  position: relative;
  overflow: hidden;
  transition: background var(--dur-slow);
}
.specialty-row__text::before {
  content: attr(data-num);
  position: absolute;
  right: -0.08em;
  bottom: -0.2em;
  font-family: var(--font-display);
  font-size: clamp(10rem, 22vw, 22rem);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(255,255,255,.04);
  pointer-events: none;
  user-select: none;
  transition: -webkit-text-stroke-color var(--dur-slow);
}
.specialty-row:hover .specialty-row__text { background: var(--color-surface-3); }
.specialty-row:hover .specialty-row__text::before {
  -webkit-text-stroke-color: rgba(200,168,76,.07);
}

.specialty-row__visual {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: clamp(5rem, 12vw, 11rem);
  letter-spacing: -.02em;
  overflow: hidden;
  position: relative;
  transition: filter var(--dur-slow);
  filter: brightness(.35) saturate(.6);
}
.specialty-row:hover .specialty-row__visual {
  filter: brightness(.6) saturate(.9);
}
/* Video de la especialidad: llena el panel visual, detrás del número decorativo. */
.specialty-row__video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
/* Iframe de YouTube: centrado; el tamaño exacto (cover 16:9) lo calcula cms.js
   en JS para evitar barras negras. Sin eventos de puntero para que no aparezca
   el título de YouTube al pasar el mouse. */
iframe.specialty-row__video {
  border: 0;
  pointer-events: none;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  inset: auto;
  width: 100%;   /* valor inicial; JS lo recalcula para cubrir */
  height: 100%;
}
/* Botón de sonido sobre el video (única zona interactiva). */
.specialty-row__sound {
  position: absolute;
  z-index: 3;
  right: 14px;
  bottom: 14px;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 50%;
  background: rgba(8, 10, 16, .6);
  backdrop-filter: blur(6px);
  color: #fff;
  font-size: 1.15rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--dur-base), transform var(--dur-base);
}
.specialty-row__sound:hover { background: rgba(8, 10, 16, .85); transform: scale(1.08); }
.specialty-row__sound[data-muted="0"] { background: var(--color-blue, #3a6bc9); }
.specialty-row__num-deco {
  position: relative;
  z-index: 1;
  opacity: .25;
  mix-blend-mode: overlay;
  pointer-events: none;
}

.specialty-row__number {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  letter-spacing: .2em;
  color: var(--color-gold);
}
.specialty-row__title {
  font-size: clamp(var(--text-2xl), 3.5vw, var(--text-d2));
  color: var(--color-text);
  line-height: 1;
}
.specialty-row__desc {
  font-size: var(--text-md);
  color: var(--color-text-muted);
  max-width: 45ch;
  line-height: 1.7;
}
.specialty-row__labs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.lab-tag {
  font-size: var(--text-xs);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-full);
  padding: var(--space-1) var(--space-3);
  color: var(--color-text-muted);
  letter-spacing: .05em;
}
.specialty-row__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--color-gold);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
  transition: gap var(--dur-base) var(--ease-out);
}
.specialty-row__link:hover { gap: var(--space-4); }

/* ── Sistema Dual ── */
/* ── Sistema Dual: título + paneles 3/2 en una franja compacta ── */
#dual { padding-top: 0; }              /* elimina el hueco sobre "03 — Metodología" */
.dual-hero {
  min-height: 80vh;
  display: flex;
  flex-direction: column;
}
.dual-hero > .container {
  padding-top: clamp(var(--space-4), 2vh, var(--space-8));
  padding-bottom: clamp(var(--space-5), 2.5vh, var(--space-8));
}
.dual-split {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.dual-panel {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: clamp(var(--space-6), 3vh, var(--space-10));
  padding: clamp(var(--space-8), 4vw, var(--space-16));
  border-right: 1px solid var(--color-border);
  min-height: 0;
}
.dual-panel:last-child { border-right: none; }
.dual-panel--empresa { background: var(--color-surface); }
.dual-panel--liceo   { background: var(--color-surface-2); }

.dual-panel__head { display: flex; align-items: flex-start; gap: clamp(var(--space-4), 2vw, var(--space-8)); }
.dual-panel__days {
  font-family: var(--font-display);
  font-size: clamp(4rem, 9vw, 8rem);
  line-height: .8;
  color: var(--color-text-dim);
  flex-shrink: 0;
  transition: color var(--dur-slow);
}
.dual-panel:hover .dual-panel__days { color: var(--color-text); }
.dual-panel__label {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  letter-spacing: .05em;
  color: var(--color-gold);
  margin-bottom: var(--space-3);
}
.dual-panel__desc { font-size: var(--text-md); color: var(--color-text-muted); line-height: 1.6; }

/* ── Collage de fotos con zoom 3D al pasar el mouse (estilo pisosparquet) ── */
.dual-collage {
  position: relative;
  flex: 1;
  min-height: clamp(130px, 19vh, 230px);
  perspective: 1000px;
}
.dual-collage__img {
  position: absolute;
  margin: 0;
  border-radius: 12px;
  overflow: hidden;
  border: 3px solid var(--color-surface-2);
  box-shadow: 0 16px 34px rgba(0, 0, 0, .45);
  transform-style: preserve-3d;
  transition: transform .4s cubic-bezier(.2, .8, .2, 1), box-shadow .4s ease,
              opacity .35s ease, filter .35s ease;
}
.dual-collage__img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.dual-collage__img--1 { width: 40%; aspect-ratio: 4/3; left: 0;    bottom: 0;  z-index: 3; }
.dual-collage__img--2 { width: 34%; aspect-ratio: 3/4; left: 36%;  top: 0;     z-index: 5; }
.dual-collage__img--3 { width: 30%; aspect-ratio: 1/1; right: 0;   bottom: 6%; z-index: 2; }

/* al pasar el mouse, las fotos se atenúan… */
.dual-collage:hover .dual-collage__img { opacity: .42; filter: saturate(.7); }
/* …menos la de bajo el cursor, que hace zoom 3D y pasa al frente */
.dual-collage .dual-collage__img:hover {
  opacity: 1; filter: none;
  transform: translateZ(70px) scale(1.16);
  z-index: 20;
  box-shadow: 0 40px 80px rgba(0, 0, 0, .6);
}

/* ── Empresas ── */
.empresas-section {
  padding-block: var(--space-16);
  border-top: 1px solid var(--color-border);
}
.empresas-section__label {
  font-size: var(--text-xs);
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
  text-align: center;
}
.empresas-logos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  align-items: center;
  justify-items: center;
  gap: var(--space-8) var(--space-6);
  max-width: 880px;
  margin-inline: auto;
}
.empresa-logo {
  width: 100%;
  max-width: 160px;
  display: flex;
  justify-content: center;
}
.empresa-logo img {
  width: 100%;
  height: auto;
  opacity: .45;
  filter: grayscale(1);
  transition: opacity var(--dur-base) var(--ease-out), filter var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
}
.empresa-logo:hover img {
  opacity: 1;
  filter: grayscale(0);
  transform: translateY(-2px);
}

/* ── Variante 3D: tarjetas con inclinación y logo flotante ── */
.empresas-logos--3d {
  grid-template-columns: repeat(4, 1fr);   /* 4 + 4 */
  gap: var(--space-6);
  max-width: 1040px;
  perspective: 1200px;
}
@media (max-width: 720px) {
  .empresas-logos--3d { grid-template-columns: repeat(2, 1fr); }
}
.empresas-logos--3d .empresa-logo {
  max-width: none;
  width: 100%;
  aspect-ratio: 5 / 3;
  padding: var(--space-5);
  background: #fff;
  border-radius: 16px;
  border: 1px solid var(--color-border);
  box-shadow: 0 10px 26px rgba(0, 0, 0, .3);
  transform-style: preserve-3d;
  transition: transform .45s cubic-bezier(.2, .8, .2, 1), box-shadow .45s ease;
  will-change: transform;
}
.empresas-logos--3d .empresa-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  opacity: 1;
  filter: none;
  transform: translateZ(28px);
  transition: transform .45s cubic-bezier(.2, .8, .2, 1);
}
.empresas-logos--3d .empresa-logo:hover {
  transform: rotateX(9deg) rotateY(-9deg) scale(1.05);
  box-shadow: 0 34px 64px rgba(0, 0, 0, .5);
}
.empresas-logos--3d .empresa-logo:hover img {
  transform: translateZ(55px);
}
/* alternar la dirección de la inclinación da sensación de profundidad variada */
.empresas-logos--3d .empresa-logo:nth-child(even):hover {
  transform: rotateX(9deg) rotateY(9deg) scale(1.05);
}

/* ── Galería de instalaciones ── */
.gallery-section {
  padding-block: var(--section-pad);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-top: 1px solid var(--color-border);
}

/* ── Equipamiento — "Registro de planta" ──
   Visor tipo sala de control. Sin JS (.equip sin .is-enhanced) los
   cuatro sets se apilan como tiras deslizables con su encabezado. */
.equip {
  --equip-mono: ui-monospace, 'SF Mono', 'Cascadia Mono', Menlo, Consolas, monospace;
}

.equip__layout { display: block; }
.equip.is-enhanced .equip__layout {
  display: grid;
  grid-template-columns: minmax(230px, 290px) 1fr;
  gap: var(--space-6);
  align-items: stretch;
}

/* Rail de especialidades — columna tipográfica */
.equip__rail { display: none; }
.equip.is-enhanced .equip__rail {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--color-border);
}

.equip-tab {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--space-1);
  padding: var(--space-4) var(--space-5);
  text-align: left;
  background: none;
  border: none;
  border-bottom: 1px solid var(--color-border);
  border-left: 2px solid transparent;
  cursor: pointer;
  transition: background var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out);
}
.equip-tab:hover { background: var(--glass-surface); }
.equip-tab:focus-visible { outline: 2px solid var(--color-gold); outline-offset: -2px; }
.equip-tab.is-active {
  border-left-color: var(--color-gold);
  background: var(--glass-surface-2);
}

.equip-tab__code {
  font-family: var(--equip-mono);
  font-size: var(--text-xs);
  letter-spacing: .25em;
  color: var(--color-text-dim);
  transition: color var(--dur-base);
}
.equip-tab.is-active .equip-tab__code { color: var(--color-gold); }

.equip-tab__name {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 1.6vw, 1.7rem);
  letter-spacing: .04em;
  line-height: 1.05;
  color: var(--color-text-muted);
  transition: color var(--dur-base), transform var(--dur-base) var(--ease-out);
}
.equip-tab:hover .equip-tab__name { transform: translateX(4px); }
.equip-tab.is-active .equip-tab__name { color: var(--color-text); }

.equip-tab__count {
  font-family: var(--equip-mono);
  font-size: .65rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--color-text-dim);
}

/* Escenario */
.equip__stagewrap { position: relative; }

/* Encabezado de set — solo visible sin JS */
.equip-set__head {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  margin: var(--space-8) 0 var(--space-3);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  letter-spacing: .05em;
  color: var(--color-text);
}
.equip-set__head span {
  font-family: var(--equip-mono);
  font-size: var(--text-xs);
  letter-spacing: .25em;
  color: var(--color-gold);
}
.equip.is-enhanced .equip-set__head { display: none; }
.equip.is-enhanced .equip-set { display: none; }
.equip.is-enhanced .equip-set.is-active { display: block; }

/* Pista scroll-snap */
.equip-set__track {
  display: flex;
  gap: 2px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  overscroll-behavior-x: contain;
}
.equip-set__track::-webkit-scrollbar { display: none; }
.equip-set__track:focus-visible { outline: 2px solid var(--color-gold); outline-offset: 4px; }

.equip-slide {
  position: relative;
  flex: 0 0 78%;
  scroll-snap-align: start;
  margin: 0;
  overflow: hidden;
  background: var(--color-surface);
  height: clamp(300px, 44vw, 420px);
}
.equip.is-enhanced .equip-slide {
  flex-basis: 100%;
  height: clamp(380px, 56vh, 600px);
}

.equip-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: brightness(.78) saturate(.85);
  transition: transform .9s var(--ease-out), filter .9s var(--ease-out);
}
.equip-slide:hover img {
  transform: scale(1.04);
  filter: brightness(.92) saturate(1);
}

/* Placa de identificación */
.equip-slide figcaption {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  padding: var(--space-6) var(--space-5) var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text);
  background: linear-gradient(transparent, rgba(4,5,8,.88));
}
.equip-slide figcaption span {
  font-family: var(--equip-mono);
  font-size: var(--text-xs);
  letter-spacing: .2em;
  color: var(--color-gold);
  white-space: nowrap;
}

/* Esquinas de mira sobre el escenario (solo con JS) */
.equip__corners {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.equip__corners i {
  position: absolute;
  width: 22px; height: 22px;
  border: 0 solid var(--color-gold-border);
}
.equip__corners i:nth-child(1) { top: 0;    left: 0;  border-top-width: 1px; border-left-width: 1px; }
.equip__corners i:nth-child(2) { top: 0;    right: 0; border-top-width: 1px; border-right-width: 1px; }
.equip__corners i:nth-child(3) { bottom: 0; left: 0;  border-bottom-width: 1px; border-left-width: 1px; }
.equip__corners i:nth-child(4) { bottom: 0; right: 0; border-bottom-width: 1px; border-right-width: 1px; }

/* Código fantasma — firma tipográfica */
.equip__ghost {
  display: none;
  position: absolute;
  right: var(--space-4);
  top: var(--space-2);
  z-index: 2;
  pointer-events: none;
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 8vw, 7.5rem);
  line-height: 1;
  letter-spacing: .03em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(216,182,90,.55);
  opacity: .9;
  filter: drop-shadow(0 2px 10px rgba(0,0,0,.65));
}
.equip.is-enhanced .equip__ghost { display: block; }

/* Barra de lectura */
.equip__controls { display: none; }
.equip.is-enhanced .equip__controls {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
  margin-top: 2px;
}

.equip__counter {
  font-family: var(--equip-mono);
  font-size: var(--text-xs);
  letter-spacing: .2em;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.equip__segments {
  display: flex;
  gap: var(--space-2);
  flex: 1;
}
.equip__segments i {
  width: 26px; height: 2px;
  background: var(--color-border-strong);
  transition: background var(--dur-base);
}
.equip__segments i.is-on { background: var(--color-gold); }

.equip__arrows { display: flex; gap: var(--space-2); }
.equip__arrow {
  width: 42px; height: 42px;
  display: grid;
  place-items: center;
  background: none;
  border: 1px solid var(--color-border-strong);
  color: var(--color-text-muted);
  font-size: var(--text-md);
  cursor: pointer;
  transition: border-color var(--dur-base), color var(--dur-base);
}
.equip__arrow:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
}
.equip__arrow:focus-visible { outline: 2px solid var(--color-gold); outline-offset: 2px; }

@media (max-width: 900px) {
  .equip.is-enhanced .equip__layout {
    display: block;
  }
  .equip.is-enhanced .equip__rail {
    flex-direction: row;
    overflow-x: auto;
    scrollbar-width: none;
    border-top: none;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--space-4);
  }
  .equip.is-enhanced .equip__rail::-webkit-scrollbar { display: none; }
  .equip-tab {
    flex: 0 0 auto;
    padding: var(--space-3) var(--space-4);
    border-bottom: none;
    border-left: none;
    border-top: 2px solid transparent;
  }
  .equip-tab.is-active { border-top-color: var(--color-gold); }
  .equip-tab__name { font-size: 1.1rem; }
  .equip-tab__count { display: none; }

  /* En móvil la diapositiva asoma la siguiente para invitar al swipe */
  .equip.is-enhanced .equip-slide {
    flex-basis: 86%;
    height: clamp(280px, 88vw, 420px);
  }
  .equip__ghost { bottom: 2.2rem; }
  .equip-slide figcaption {
    flex-direction: column;
    gap: var(--space-1);
    padding: var(--space-5) var(--space-4) var(--space-3);
    font-size: var(--text-xs);
  }
}

/* ── Admisión ── */
.admision-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-12), 8vw, var(--space-24));
  align-items: start;
}
.admision-info { position: sticky; top: calc(var(--header-h) + var(--space-8)); }
.admision-requisitos {
  margin-top: var(--space-10);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-8);
}
.admision-requisitos__title {
  font-size: var(--text-sm);
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-5);
}
.requisitos-list { display: flex; flex-direction: column; gap: var(--space-3); }
.requisitos-list li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
}
.requisitos-list li::before { content: '—'; color: var(--color-gold); flex-shrink: 0; }

/* ── Footer ── */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-16) var(--space-8);
}
.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid var(--color-border);
}
.footer__brand-name {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  letter-spacing: .08em;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}
.footer__brand p { font-size: var(--text-sm); color: var(--color-text-muted); line-height: 1.6; }
.footer__brand a { color: var(--color-gold); }
.footer__brand a:hover { text-decoration: underline; }
.footer__col-title {
  font-size: var(--text-xs);
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
}
.footer__col ul { display: flex; flex-direction: column; gap: var(--space-3); }
.footer__col a {
  font-size: var(--text-sm);
  color: var(--color-text-dim);
  transition: color var(--dur-fast);
}
.footer__col a:hover { color: var(--color-text); }
.social-links { display: flex; gap: var(--space-3); margin-top: var(--space-4); }
.social-links a {
  display: flex; align-items: center; justify-content: center;
  width: 32px; height: 32px;
  color: var(--color-text-dim);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: color var(--dur-fast), border-color var(--dur-fast);
}
.social-links a:hover { color: var(--color-gold); border-color: var(--color-gold-border); }
.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--text-xs);
  color: var(--color-text-dim);
  letter-spacing: .05em;
}

/* ── Page Loader ── */
.page-loader {
  position: fixed;
  inset: 0;
  z-index: 999;
  background: var(--color-bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  transition: opacity var(--dur-slow) var(--ease-snap);
}
.page-loader--done { opacity: 0; pointer-events: none; }

.loader__logo img { height: 48px; width: auto; background: #fff; border-radius: 9px; padding: 7px 12px; box-shadow: 0 4px 16px rgba(0,0,0,.3); opacity: .96; animation: pulse 1.8s ease-in-out infinite; }
.loader__text {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.loader__bar {
  width: min(220px, 50vw);
  height: 1px;
  background: var(--color-surface-3);
}
.loader__bar-fill {
  height: 100%;
  width: 0%;
  background: var(--color-gold);
  transition: width .2s var(--ease-snap);
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .admision-layout { grid-template-columns: 1fr; }
  .admision-info { position: static; }
}
@media (max-width: 768px) {
  .page-bg__veil { background:
    linear-gradient(180deg, rgba(6,7,11,.48) 0%, rgba(6,7,11,.34) 45%, rgba(6,7,11,.60) 100%); }
  .stats-grid { grid-template-columns: 1fr; }
  .stat-item { border-right: none; border-bottom: 1px solid var(--color-border); }
  /* En móvil: foto arriba (banner) y texto debajo, en vez de ocultarla. */
  .specialty-row { grid-template-columns: 1fr; }
  .specialty-row:nth-child(even) { direction: ltr; }   /* anula el rtl alterno */
  .specialty-row__visual {
    display: flex;
    order: -1;                 /* la imagen va arriba */
    min-height: 220px;
    font-size: clamp(4rem, 22vw, 7rem);
    filter: brightness(.55) saturate(.9);
  }
  .about-layout { grid-template-columns: 1fr; }
  .dual-split { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .nav__menu { display: none; }
  .nav__menu.is-open {
    display: flex;
    position: fixed;
    inset: var(--header-h) 0 0 0;
    background: var(--color-bg);
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    gap: var(--space-5);
    padding: var(--space-8) var(--space-6);
    font-size: var(--text-lg);
    overflow-y: auto;          /* scroll si los submenús alargan el menú */
  }
  .nav__toggle { display: flex; }

  /* ── Submenús dentro del menú móvil: en flujo, no flotantes ── */
  .nav__item { flex-direction: column; align-items: center; width: 100%; }
  .nav__item--has-sub { position: static; }
  .nav__caret { font-size: 1em; padding: .25rem .5rem; }
  .nav__submenu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    width: 100%;
    max-width: 320px;
    margin: .35rem auto 0;
    max-height: 0;             /* colapsado por defecto */
    overflow: hidden;
    padding: 0 .4rem;
    box-shadow: none;
    border-color: transparent;
    background: transparent;
    transition: max-height var(--dur-base) var(--ease-out);
  }
  .nav__item--has-sub.is-open .nav__submenu {
    max-height: 60vh;          /* desplegado al tocar el caret */
    padding: .4rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md, .5rem);
  }
  .nav__sublink { text-align: center; font-size: .95rem; }
}
@media (max-width: 480px) {
  .footer__grid { grid-template-columns: 1fr; }
}