/* ═══════════════════════════════════════════════════════════════════════
   NEXO Academia — main.css
   Dirección visual: «Papel y Regla». Papel cálido, tinta, verde pizarra y
   un rojo de corrección que sólo aparece cuando hay algo que señalar.
   Orden: tokens · reset · tipografía · layout · secciones · utilidades.
   ═══════════════════════════════════════════════════════════════════════ */

/* ───────────────────────────────  TOKENS  ─────────────────────────── */
:root {
  /* Superficies */
  --paper:        #fbf8f2;
  --paper-2:      #f4ecdf;   /* arena */
  --paper-3:      #eadfc9;
  --ink:          #171c26;   /* casi negro, con un punto de azul */
  --navy:         #14314f;   /* superficie oscura de marca */
  --navy-2:       #0e2439;

  /* Texto */
  --tx:           #171c26;
  --tx-2:         #3d4551;
  --tx-3:         #636b78;
  --tx-on-ink:    #fbf8f2;
  --tx-2-on-ink:  #b9c6c0;

  /* Acentos */
  --blue:         #15507f;
  --blue-deep:    #0f3c61;
  --blue-soft:    #e3ecf5;
  --blue-lift:    #7fb3e0;   /* sobre azul oscuro */

  --amber:        #e0912b;   /* el color que se ve: rellenos y marcas */
  --amber-ink:    #8a5510;   /* la versión legible como texto */
  --amber-soft:   #fbebd3;
  --amber-lift:   #f0b25a;   /* sobre verde oscuro */

  --red:          #ce4b21;   /* marca de corrección */
  --red-deep:     #a13715;
  --red-soft:     #fbe8e0;
  --red-lift:     #f79468;

  /* Filetes */
  --rule:         rgba(23, 28, 38, .14);
  --rule-strong:  rgba(23, 28, 38, .3);
  --rule-on-ink:  rgba(251, 248, 242, .2);

  /* Tipografía */
  --font-display: 'Fraunces', 'Iowan Old Style', 'Palatino Linotype', Georgia, serif;
  --font-text:    'Archivo', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;

  --step--2: clamp(.75rem, .735rem + .07vw, .8125rem);
  --step--1: clamp(.8125rem, .79rem + .11vw, .875rem);
  --step-0:  clamp(1rem, .972rem + .14vw, 1.0625rem);
  --step-1:  clamp(1.125rem, 1.08rem + .22vw, 1.25rem);
  --step-2:  clamp(1.3rem, 1.22rem + .4vw, 1.55rem);
  --step-3:  clamp(1.55rem, 1.39rem + .8vw, 2.1rem);
  --step-4:  clamp(1.95rem, 1.65rem + 1.5vw, 2.95rem);
  --step-5:  clamp(2.5rem, 1.9rem + 2.9vw, 4.35rem);
  --step-6:  clamp(2.9rem, 1.95rem + 4.4vw, 5.6rem);

  /* Ritmo */
  --s-1: .25rem;  --s-2: .5rem;   --s-3: .75rem;  --s-4: 1rem;
  --s-5: 1.5rem;  --s-6: 2rem;    --s-7: 3rem;    --s-8: 4rem;
  --s-9: 6rem;    --s-10: 8rem;

  --wrap:      min(100% - 2.5rem, 1180px);
  --wrap-wide: min(100% - 2.5rem, 1400px);
  --wrap-text: min(100% - 2.5rem, 46rem);
  --measure:   68ch;

  /* Forma */
  --r-1: 3px;
  --r-2: 6px;
  --r-pill: 999px;

  /* Movimiento */
  --ease-out:    cubic-bezier(.23, 1, .32, 1);
  --ease-in-out: cubic-bezier(.77, 0, .175, 1);
  --t-fast: 140ms;
  --t-mid:  220ms;
  --t-slow: 340ms;

  --shadow-lift: 0 1px 2px rgba(23, 28, 38, .05), 0 10px 30px -14px rgba(23, 28, 38, .28);
  --shadow-pop:  0 2px 4px rgba(23, 28, 38, .06), 0 22px 48px -20px rgba(23, 28, 38, .34);

  --header-h: 60px;
  color-scheme: light;
}

/* ────────────────────────────────  RESET  ─────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 1.5rem);
}

body {
  background: var(--paper);
  color: var(--tx);
  font-family: var(--font-text);
  font-size: var(--step-0);
  line-height: 1.6;
  font-synthesis-weight: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg, video { display: block; max-width: 100%; height: auto; }
/* El reset anterior pisa el display:none que el navegador da a [hidden]. */
[hidden] { display: none !important; }
input, button, textarea, select { font: inherit; color: inherit; }
button { background: none; border: 0; }
ul, ol { padding: 0; list-style: none; }

/* Superficies del navegador: también forman parte del diseño */
::selection { background: var(--blue); color: var(--paper); }
body { caret-color: var(--blue); }
:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
  border-radius: var(--r-1);
}
.on-ink :focus-visible { outline-color: var(--blue-lift); }

@supports (scrollbar-color: red blue) {
  html { scrollbar-color: var(--rule-strong) transparent; scrollbar-width: thin; }
}
::-webkit-scrollbar { width: 11px; height: 11px; }
::-webkit-scrollbar-track { background: var(--paper-2); }
::-webkit-scrollbar-thumb {
  background: rgba(23, 28, 38, .24);
  border: 3px solid var(--paper-2);
  border-radius: var(--r-pill);
}
::-webkit-scrollbar-thumb:hover { background: rgba(23, 28, 38, .42); }

/* ─────────────────────────────  TIPOGRAFÍA  ───────────────────────── */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: -.022em;
  text-wrap: balance;
  font-variation-settings: 'SOFT' 0, 'WONK' 0;
}

h1 { font-size: var(--step-5); }
h2 { font-size: var(--step-4); }
h3 { font-size: var(--step-2); line-height: 1.18; letter-spacing: -.016em; }
h4 { font-size: var(--step-1); line-height: 1.25; letter-spacing: -.012em; }

p { text-wrap: pretty; }
p, li { max-width: var(--measure); }

a { color: inherit; text-underline-offset: .18em; text-decoration-thickness: from-font; }

strong, b { font-weight: 600; }

.display {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -.03em;
  line-height: 1;
  font-variation-settings: 'SOFT' 0, 'WONK' 0;
}

.lead {
  font-size: var(--step-1);
  line-height: 1.5;
  color: var(--tx-2);
  max-width: 44ch;
}

.num {
  font-family: var(--font-display);
  font-variant-numeric: tabular-nums lining-nums;
  letter-spacing: -.03em;
}

.tnum { font-variant-numeric: tabular-nums lining-nums; }

.micro {
  font-size: var(--step--2);
  letter-spacing: .1em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--tx-3);
}

.small { font-size: var(--step--1); color: var(--tx-2); }

/* Anotación al margen: la firma visual del proyecto */
.marginalia {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--step--1);
  line-height: 1.45;
  color: var(--red-deep);   /* el rojo de relleno no llega a AA como texto */
  max-width: 26ch;
  padding-left: var(--s-4);
  border-left: 1px solid currentColor;
}

.on-ink .marginalia { color: var(--red-lift); }

/* ───────────────────────────────  LAYOUT  ─────────────────────────── */
.wrap      { width: var(--wrap); margin-inline: auto; }
.wrap-wide { width: var(--wrap-wide); margin-inline: auto; }
.wrap-text { width: var(--wrap-text); margin-inline: auto; }

.section { padding-block: clamp(3.5rem, 2rem + 6vw, 7rem); }
.section-tight { padding-block: clamp(2.5rem, 1.5rem + 4vw, 4.5rem); }

.section--paper2 { background: var(--paper-2); }

/* Sobre tinta se redefinen los tokens, no cada selector: así ningún texto
   secundario se queda con un gris pensado para fondo claro. */
/* .result es una superficie oscura suelta dentro de una página clara:
   necesita los mismos tokens o su texto y sus botones se vuelven invisibles. */
.section--ink, .on-ink, .site-footer, .result {
  --tx:          #fbf8f2;
  --tx-2:        #b9c6c0;
  --tx-3:        #b9c6c0;
  --blue:       var(--blue-lift);
  --amber:       var(--amber-lift);
  --amber-ink:   var(--amber-lift);
  --red:         var(--red-lift);
  --rule:        rgba(251, 248, 242, .2);
  --rule-strong: rgba(251, 248, 242, .36);
  --paper-2:     rgba(251, 248, 242, .07);
  --paper-3:     rgba(251, 248, 242, .12);
  color: var(--tx-on-ink);
}

.section--ink { background: var(--navy); }

/* La franja que sigue al hero recoge su azul sin corte visible. */
.hero-cine + .section--ink { padding-top: clamp(2.5rem, 1.5rem + 3vw, 4rem); }
.site-footer  { background: var(--navy-2); }

.rule { border: 0; border-top: 1px solid var(--rule); margin: 0; }
.rule--strong { border-top-color: var(--rule-strong); }
.on-ink .rule, .section--ink .rule { border-top-color: var(--rule-on-ink); }

/* Encabezado de sección: título a la izquierda, entradilla a la derecha.
   Sin etiquetas sobre el título: el titular se sostiene solo. */
.s-head {
  display: grid;
  gap: var(--s-4) var(--s-7);
  padding-top: var(--s-5);
  border-top: 1px solid var(--rule);
  margin-bottom: clamp(2rem, 1rem + 3vw, 3.5rem);
}

.s-head__title { max-width: 18ch; }
.s-head__aside { align-self: end; }
.s-head__aside p { color: var(--tx-2); max-width: 42ch; }

@media (min-width: 62rem) {
  .s-head { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); align-items: start; }
}

.grid { display: grid; gap: var(--s-5); }

.skip-link {
  position: absolute;
  left: var(--s-4);
  top: var(--s-4);
  z-index: 200;
  transform: translateY(-160%);
  background: var(--ink);
  color: var(--paper);
  padding: .65rem 1rem;
  border-radius: var(--r-1);
  font-size: var(--step--1);
  font-weight: 500;
  transition: transform var(--t-mid) var(--ease-out);
}
.skip-link:focus-visible { transform: translateY(0); }

/* ──────────────────────────────  CABECERA  ────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--rule);
}

.site-header__inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-5);
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: .5rem;
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: -.02em;
  font-variation-settings: 'SOFT' 0, 'WONK' 0;
  white-space: nowrap;
}
.brand__mark { color: var(--blue); }
.brand__sub {
  font-family: var(--font-text);
  font-size: .68rem;
  font-weight: 500;
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--tx-3);
}

.nav { display: none; }

@media (min-width: 64rem) {
  .nav {
    display: flex;
    align-items: center;
    gap: clamp(.9rem, .2rem + 1.2vw, 1.7rem);
  }
  .nav__link {
    position: relative;
    text-decoration: none;
    font-size: var(--step--1);
    font-weight: 500;
    color: var(--tx-2);
    padding-block: .4rem;
    transition: color var(--t-fast) ease;
  }
  .nav__link::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 1.5px;
    background: var(--blue);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--t-mid) var(--ease-out);
  }
  .nav__link:hover { color: var(--tx); }
  .nav__link:hover::after,
  .nav__link[aria-current='page']::after { transform: scaleX(1); }
  .nav__link[aria-current='page'] { color: var(--tx); }
}

.header-actions { display: flex; align-items: center; gap: var(--s-3); }
.header-actions .btn { white-space: nowrap; }

/* Menú móvil */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-right: -6px;
  border-radius: var(--r-1);
  cursor: pointer;
  color: var(--tx);
}
@media (min-width: 64rem) { .nav-toggle { display: none; } }

.nav-toggle__bars { display: block; width: 20px; height: 12px; position: relative; }
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: '';
  position: absolute;
  left: 0;
  width: 100%;
  height: 1.5px;
  background: currentColor;
  transition: transform var(--t-mid) var(--ease-out), top var(--t-fast) var(--ease-out);
}
.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars::after  { top: 10px; }
.nav-toggle[aria-expanded='true'] .nav-toggle__bars::before { top: 5px; transform: rotate(45deg); }
.nav-toggle[aria-expanded='true'] .nav-toggle__bars::after  { top: 5px; transform: rotate(-45deg); }

.mobile-nav {
  position: fixed;
  inset: var(--header-h) 0 0;
  z-index: 99;
  background: var(--paper);
  padding: var(--s-6) 0 var(--s-8);
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  /* La visibilidad cambia de golpe: al abrir, de inmediato; al cerrar, al final. */
  transition: opacity var(--t-mid) var(--ease-out),
              transform var(--t-mid) var(--ease-out),
              visibility 0s linear var(--t-mid);
}
.mobile-nav[data-open='true'] {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition: opacity var(--t-mid) var(--ease-out),
              transform var(--t-mid) var(--ease-out),
              visibility 0s;
}
@media (min-width: 64rem) { .mobile-nav { display: none; } }

.mobile-nav__link {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--s-4);
  padding: var(--s-4) 0;
  border-bottom: 1px solid var(--rule);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: var(--step-2);
  letter-spacing: -.02em;
  font-variation-settings: 'SOFT' 0, 'WONK' 0;
}
.mobile-nav__link span { font-family: var(--font-text); font-size: var(--step--1); color: var(--tx-3); }
.mobile-nav__link[aria-current='page'] { color: var(--blue); }
.mobile-nav__actions { display: grid; gap: var(--s-3); margin-top: var(--s-6); }

/* ──────────────────────────────  PIE  ─────────────────────────────── */
.site-footer {
  background: var(--ink);
  color: var(--tx-on-ink);
  padding-block: var(--s-8) var(--s-5);
}
.site-footer a { color: var(--tx-on-ink); }

.footer-grid {
  display: grid;
  gap: var(--s-7) var(--s-6);
  padding-bottom: var(--s-7);
}
@media (min-width: 46rem) { .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 70rem) { .footer-grid { grid-template-columns: 1.6fr 1fr 1fr 1.1fr; } }

.footer-col h3 {
  font-family: var(--font-text);
  font-size: var(--step--2);
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--tx-2-on-ink);
  margin-bottom: var(--s-4);
}
.footer-col li + li { margin-top: .6rem; }
.footer-col a {
  font-size: var(--step--1);
  text-decoration: none;
  color: var(--tx-2-on-ink);
  transition: color var(--t-fast) ease;
}
.footer-col a:hover { color: var(--tx-on-ink); text-decoration: underline; }

.footer-brand .brand { color: var(--tx-on-ink); font-size: 1.5rem; }
.footer-brand .brand__mark { color: var(--blue-lift); }
.footer-brand p { color: var(--tx-2-on-ink); font-size: var(--step--1); margin-top: var(--s-3); max-width: 34ch; }

.footer-bottom {
  border-top: 1px solid var(--rule-on-ink);
  padding-top: var(--s-5);
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3) var(--s-5);
  justify-content: space-between;
  font-size: var(--step--2);
  color: var(--tx-2-on-ink);
}
.footer-bottom a { color: var(--tx-2-on-ink); }

/* ─────────────  REJILLA HEREDADA DEL HERO (metodología)  ────────────── */
.hero__grid { display: grid; gap: clamp(2rem, 1rem + 4vw, 3.5rem); }

@media (min-width: 64rem) {
  .hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    align-items: center;
    gap: clamp(2.5rem, 1rem + 4vw, 5rem);
  }
}

.stars { display: inline-flex; gap: 2px; color: var(--amber); vertical-align: middle; }
.stars svg { width: 16px; height: 16px; }

/* Ficha de seguimiento: sigue viva en la página de metodología. */
.hero__card {
  background: var(--paper);
  border: 1px solid var(--rule-strong);
  border-radius: var(--r-2);
  box-shadow: var(--shadow-lift);
  overflow: hidden;
}

.hero__card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-4);
  padding: var(--s-4) var(--s-5);
  border-bottom: 1px solid var(--rule);
  background: var(--paper-2);
}
.hero__card-body { padding: var(--s-5); display: grid; gap: var(--s-4); }

.trend {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--s-3);
  align-items: end;
  height: 148px;
  padding-top: var(--s-2);
}
.trend__col {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  gap: .3rem;
  height: 100%;
  min-height: 0;
}

/* La barra vive dentro de su propia pista: así el valor de arriba y la
   etiqueta de abajo nunca se comen el espacio del gráfico. */
.trend__track {
  flex: 1 1 auto;
  min-height: 0;
  width: 100%;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}
.trend__bar {
  width: 100%;
  max-width: 34px;
  flex: 0 0 auto;
  background: var(--blue-soft);
  border: 1px solid var(--blue);
  border-bottom: 0;
  border-radius: var(--r-1) var(--r-1) 0 0;
  transform-origin: bottom;
  height: calc(var(--h) * 1%);
  min-height: 3px;
  /* El único gesto de entrada de la portada. Sin JS: no parpadea. */
  animation: bar-grow 720ms var(--ease-out) both;
  animation-delay: var(--d, 0ms);
}
@keyframes bar-grow {
  from { transform: scaleY(.04); opacity: .4; }
  to   { transform: scaleY(1); opacity: 1; }
}
.trend__col:last-child .trend__bar { background: var(--blue); }
.trend__label { font-size: var(--step--2); color: var(--tx-3); font-variant-numeric: tabular-nums; }
.trend__value {
  font-family: var(--font-display);
  font-size: var(--step--1);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

/* ──────────────────────────  SÍNTOMAS / PROBLEMA  ─────────────────── */
.symptoms { display: grid; }

.symptom {
  display: grid;
  gap: var(--s-2) var(--s-6);
  padding-block: clamp(1.4rem, 1rem + 1.4vw, 2.2rem);
  border-top: 1px solid var(--rule);
}
.symptom:first-child { border-top: 0; }

.symptom__quote {
  font-family: var(--font-display);
  font-size: var(--step-3);
  line-height: 1.16;
  letter-spacing: -.022em;
  font-variation-settings: 'SOFT' 0, 'WONK' 0;
  max-width: 20ch;
}
.symptom__note { color: var(--tx-2); font-size: var(--step--1); max-width: 42ch; align-self: center; }

@media (min-width: 58rem) {
  .symptom { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: baseline; }
}

/* ─────────────────────────────  MÉTODO  ───────────────────────────── */
/* Los números 01–04 sí informan: el orden de las fases es el método. */
.method { display: grid; counter-reset: step; }

.method__item {
  display: grid;
  gap: var(--s-2) var(--s-6);
  padding-block: clamp(1.6rem, 1rem + 1.8vw, 2.6rem);
  border-top: 1px solid var(--rule);
  position: relative;
}

.method__step {
  font-family: var(--font-display);
  font-size: var(--step-3);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--blue);
  line-height: 1;
}
.method__time { font-size: var(--step--1); color: var(--tx-3); margin-top: .35rem; }
.method__title { margin-bottom: .5rem; }
.method__text { color: var(--tx-2); max-width: 52ch; }

@media (min-width: 58rem) {
  .method__item { grid-template-columns: 7rem minmax(0, 1fr) minmax(0, 1.15fr); align-items: start; }
  .method__body { grid-column: 2; }
  .method__text { grid-column: 3; }
  .method__title { margin-bottom: 0; }
}

/* ────────────────────────────  PROGRAMAS  ─────────────────────────── */
.programs { display: grid; gap: 0; }

.program {
  display: grid;
  gap: var(--s-4) var(--s-6);
  padding-block: clamp(1.8rem, 1.2rem + 2vw, 2.8rem);
  border-top: 1px solid var(--rule);
  transition: background-color var(--t-mid) ease;
}
.program:last-child { border-bottom: 1px solid var(--rule); }

.program__name {
  font-family: var(--font-display);
  font-size: var(--step-3);
  letter-spacing: -.025em;
  line-height: 1.05;
  font-variation-settings: 'SOFT' 0, 'WONK' 0;
}
.program__ages { font-size: var(--step--1); color: var(--tx-3); margin-top: .35rem; }
.program__lead { font-size: var(--step-1); line-height: 1.4; max-width: 34ch; }
.program__body { color: var(--tx-2); font-size: var(--step--1); margin-top: var(--s-3); max-width: 52ch; }

.program__meta {
  display: grid;
  gap: var(--s-3);
  align-content: start;
}
.meta-row {
  display: flex;
  justify-content: space-between;
  gap: var(--s-4);
  font-size: var(--step--1);
  padding-bottom: .5rem;
  border-bottom: 1px dotted var(--rule-strong);
}
.meta-row dt { color: var(--tx-3); }
.meta-row dd { margin: 0; font-weight: 500; text-align: right; }

@media (min-width: 60rem) {
  .program { grid-template-columns: minmax(0, 3fr) minmax(0, 5fr) minmax(0, 3.6fr); align-items: start; }
  .program:hover { background: color-mix(in srgb, var(--paper-2) 60%, transparent); }
}

.chips { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: var(--s-4); }
.chip {
  font-size: var(--step--2);
  padding: .28rem .6rem;
  border: 1px solid var(--rule-strong);
  border-radius: var(--r-pill);
  color: var(--tx-2);
  background: var(--paper);
}
.section--paper2 .chip { background: var(--paper); }

/* ───────────────────────────  PROFESORADO  ────────────────────────── */
.teachers { display: grid; gap: var(--s-6) var(--s-6); }
@media (min-width: 48rem) { .teachers { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 76rem) { .teachers { grid-template-columns: repeat(3, minmax(0, 1fr)); } }

.teacher { display: grid; gap: var(--s-4); align-content: start; }

.teacher__portrait {
  aspect-ratio: 4 / 5;
  border: 1px solid var(--rule-strong);
  border-radius: var(--r-2);
  overflow: hidden;
  background: var(--paper-2);
}
.teacher__portrait svg { width: 100%; height: 100%; }

.teacher__name { font-size: var(--step-2); }
.teacher__role { font-size: var(--step--1); color: var(--blue); font-weight: 500; margin-top: .2rem; }
.teacher__years {
  font-size: var(--step--2);
  color: var(--tx-3);
  margin-top: .4rem;
  font-variant-numeric: tabular-nums;
}
.teacher__bio { font-size: var(--step--1); color: var(--tx-2); margin-top: var(--s-3); }

/* ─────────────────────────────  OPINIONES  ────────────────────────── */
.quotes { display: grid; gap: var(--s-6); }
@media (min-width: 52rem) { .quotes { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s-6) var(--s-7); } }

.quote {
  display: grid;
  gap: var(--s-4);
  align-content: start;
  padding-top: var(--s-5);
  border-top: 2px solid var(--ink);
}
.quote blockquote {
  font-family: var(--font-display);
  font-size: var(--step-2);
  line-height: 1.32;
  letter-spacing: -.018em;
  font-variation-settings: 'SOFT' 0, 'WONK' 0;
  margin: 0;
}
.quote figcaption { display: flex; align-items: center; gap: var(--s-3); }

.avatar {
  width: 38px;
  height: 38px;
  flex: none;
  display: grid;
  place-items: center;
  border-radius: var(--r-pill);
  background: var(--blue-soft);
  border: 1px solid var(--blue);
  color: var(--blue-deep);
  font-size: var(--step--2);
  font-weight: 600;
  letter-spacing: .04em;
}
.quote__who { font-size: var(--step--1); font-weight: 500; }
.quote__rel { font-size: var(--step--2); color: var(--tx-3); }

/* ──────────────────────────  CIERRE / CTA  ────────────────────────── */
.closer { display: grid; gap: var(--s-6); align-items: center; }
@media (min-width: 60rem) { .closer { grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: var(--s-8); } }

.closer__title { font-size: var(--step-4); max-width: 16ch; }
.closer__actions { display: grid; gap: var(--s-3); }
@media (min-width: 30rem) { .closer__actions { grid-auto-flow: column; justify-content: start; } }

/* ─────────────────────────  CABECERA DE PÁGINA  ───────────────────── */
.page-head {
  padding-block: clamp(2rem, 1rem + 4vw, 4rem) clamp(2rem, 1rem + 3vw, 3.5rem);
  border-bottom: 1px solid var(--rule);
}
.page-head__grid { display: grid; gap: var(--s-5) var(--s-7); }
@media (min-width: 62rem) {
  .page-head__grid { grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); align-items: end; }
}
.page-head h1 { font-size: var(--step-5); max-width: 15ch; }
.page-head .lead { max-width: 42ch; }

.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .4rem;
  font-size: var(--step--2);
  color: var(--tx-3);
  margin-bottom: var(--s-4);
}
.crumbs a { color: var(--tx-3); text-decoration: none; }
.crumbs a:hover { color: var(--tx); text-decoration: underline; }
.crumbs li { display: flex; align-items: center; gap: .4rem; max-width: none; }
.crumbs li + li::before { content: '/'; color: var(--rule-strong); }
.crumbs [aria-current] { color: var(--tx-2); }

/* ─────────────────────────────  REVELADO  ─────────────────────────── */
/* Un único gesto de entrada, corto y sólo donde aporta. */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
}
[data-reveal].is-in {
  opacity: 1;
  transform: none;
  transition: opacity 520ms var(--ease-out), transform 520ms var(--ease-out);
  transition-delay: var(--reveal-delay, 0ms);
}
.no-js [data-reveal], html:not(.js) [data-reveal] { opacity: 1; transform: none; }

/* ──────────────────────────  MOVIMIENTO REDUCIDO  ─────────────────── */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
  .trend__bar { transform: none; }
}

/* ────────────────────────────  UTILIDADES  ────────────────────────── */
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}
.stack > * + * { margin-top: var(--s-4); }
.stack-lg > * + * { margin-top: var(--s-6); }
.text-red { color: var(--red); }
.text-green { color: var(--blue); }
.mt-5 { margin-top: var(--s-5); }
.mt-6 { margin-top: var(--s-6); }
.mt-7 { margin-top: var(--s-7); }
.no-measure { max-width: none; }

/* ═══════════════════════════════════════════════════════════════════════
   PORTADA CINEMATOGRÁFICA
   Vídeo de un aula real a pantalla completa. El degradado no es adorno:
   garantiza el contraste del texto y funde el vídeo con el papel de la
   sección siguiente.
   ═══════════════════════════════════════════════════════════════════════ */
.hero-cine {
  position: relative;
  isolation: isolate;
  display: grid;
  align-content: center;
  min-height: 92svh;
  /* Se mete bajo la cabecera para que el vídeo llegue al borde superior. */
  margin-top: calc(var(--header-h) * -1);
  padding-top: calc(var(--header-h) + clamp(3rem, 2rem + 5vw, 6rem));
  padding-bottom: clamp(4rem, 3rem + 6vw, 8rem);
  background: var(--navy-2) center / cover no-repeat;
  overflow: hidden;
}

@supports not (min-height: 92svh) {
  .hero-cine { min-height: 92vh; }
}

.hero-cine__media,
.hero-cine__video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
}
.hero-cine__media {
  background: var(--navy-2) center / cover no-repeat;
  background-image: image-set(url('../assets/images/hero-poster.webp') 1x);
}
.hero-cine__video { object-fit: cover; opacity: 0; transition: opacity 900ms var(--ease-out); }
.hero-cine__video[data-playing='true'] { opacity: 1; }

.hero-cine__scrim {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(to bottom,
      rgba(20, 49, 79, .86) 0%,
      rgba(20, 49, 79, .58) 24%,
      rgba(20, 49, 79, .58) 66%,
      rgba(20, 49, 79, .88) 86%,
      var(--navy) 100%);
}

.hero-cine__inner {
  display: grid;
  text-align: center;
  gap: var(--s-5);
}
/* Cada bloque ocupa el ancho disponible y su max-width sólo lo limita:
   con justify-items:center el ancho era el max-width y se salía en móvil. */
.hero-cine__inner > * { margin-inline: auto; }

.hero-cine__title {
  font-size: clamp(2.6rem, 1.4rem + 5.4vw, 5.6rem);
  line-height: .98;
  letter-spacing: -.035em;
  color: var(--paper);
  max-width: 17ch;
  margin: 0;
}
.hero-cine__title em {
  font-style: italic;
  color: var(--amber-lift);
}

.hero-cine__lead {
  font-size: var(--step-1);
  line-height: 1.5;
  color: rgba(251, 248, 242, .82);
  max-width: 48ch;
}

.hero-cine__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--s-3);
  margin-top: var(--s-2);
}

.hero-cine__proof {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: .3rem .6rem;
  font-size: var(--step--1);
  color: rgba(251, 248, 242, .78);
  margin-top: var(--s-4);
}
.hero-cine__proof b { color: var(--paper); font-weight: 600; font-variant-numeric: tabular-nums; }
.hero-cine__proof .stars { color: var(--amber-lift); }

/* Control de pausa: un vídeo que se mueve solo necesita poder pararse. */
.hero-cine .hero-cine__toggle {
  position: absolute;
  right: clamp(1rem, 4vw, 2.5rem);
  bottom: clamp(1rem, 4vw, 2.5rem);
  z-index: 2;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: var(--r-pill);
  color: var(--paper);
  cursor: pointer;
}
.hero-cine__toggle svg { width: 16px; height: 16px; }
.hero-cine__toggle[hidden] { display: none; }

/* ─────────────────────  ENTRADA ESCALONADA  ─────────────────────────── */
@keyframes fade-rise {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: none; }
}

.hero-cine__inner > * { animation: fade-rise 800ms var(--ease-out) both; }
.hero-cine__inner > :nth-child(2) { animation-delay: 120ms; }
.hero-cine__inner > :nth-child(3) { animation-delay: 240ms; }
.hero-cine__inner > :nth-child(4) { animation-delay: 360ms; }

/* ────────────────  CABECERA SOBRE EL VÍDEO  ─────────────────────────── */
.site-header[data-over='true'] {
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-bottom-color: transparent;
  --tx:   #fbf8f2;
  --tx-2: rgba(251, 248, 242, .78);
  --tx-3: rgba(251, 248, 242, .62);
  color: var(--paper);
}
.site-header[data-over='true'] .brand__mark { color: var(--amber-lift); }
.site-header[data-over='true'] .nav__link::after { background: var(--amber-lift); }
.site-header[data-over='true'] .btn--sm {
  --btn-bg: rgba(251, 248, 242, .1);
  --btn-fg: #fbf8f2;
  --btn-bd: rgba(251, 248, 242, .34);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: var(--r-pill);
}
@media (hover: hover) and (pointer: fine) {
  .site-header[data-over='true'] .btn--sm:hover {
    --btn-bg: var(--amber); --btn-fg: #241505; --btn-bd: var(--amber);
  }
}
.site-header[data-over='true'] :focus-visible { outline-color: var(--paper); }

@media (prefers-reduced-motion: reduce) {
  .hero-cine__inner > * { animation: none; }
  .hero-cine__video { transition: none; }
}