/* ============================================================
   LEARNING TOGETHER — Expotech 2026
   Paleta: tinta navy · verde señal · celeste · papel
   Tipografía: Sora (display) · Instrument Sans (texto)
   ============================================================ */

:root{
  --tinta:#081827;
  --oceano:#10293f;
  --oceano-2:#16344e;
  --verde:#1da45e;
  --verde-osc:#12814a;
  --lima:#9be8b0;
  --cielo:#a9cbea;
  --papel:#f4f8fc;
  --blanco:#ffffff;
  --texto:#22384c;
  --texto-suave:#5b7186;
  --borde:#dde8f2;
  --radio:18px;
  --radio-lg:28px;
  --sombra:0 18px 50px -18px rgba(8,24,39,.22);
  --display:'Sora',sans-serif;
  --cuerpo:'Instrument Sans',sans-serif;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--cuerpo);
  color:var(--texto);
  background:var(--papel);
  line-height:1.65;
  font-size:17px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
h1,h2,h3,h4{font-family:var(--display);line-height:1.15;color:var(--tinta);font-weight:700}

.contenedor{width:min(1160px,92%);margin-inline:auto}
.seccion{padding:96px 0}
.seccion--oscura{background:var(--tinta);color:#d7e5f2}
.seccion--oscura h2,.seccion--oscura h3{color:var(--blanco)}

/* ---------- utilidades tipográficas ---------- */
.cejilla{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--display);font-size:.78rem;font-weight:700;
  letter-spacing:.18em;text-transform:uppercase;color:var(--verde);
  margin-bottom:16px;
}
.cejilla::before{content:"";width:26px;height:3px;border-radius:3px;background:var(--verde)}
.seccion--oscura .cejilla{color:var(--lima)}
.seccion--oscura .cejilla::before{background:var(--lima)}

.titulo{font-size:clamp(1.9rem,4vw,2.7rem);letter-spacing:-.02em;margin-bottom:18px}
.entradilla{color:var(--texto-suave);max-width:640px;font-size:1.05rem}
.seccion--oscura .entradilla{color:#a9c1d6}
.centro{text-align:center}
.centro .entradilla{margin-inline:auto}

/* ---------- navegación ---------- */
.navegacion{
  position:fixed;inset:0 0 auto 0;z-index:50;
  background:rgba(8,24,39,.72);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.navegacion__fila{display:flex;align-items:center;justify-content:space-between;height:74px}
.navegacion__logo img{height:40px;width:auto}
.navegacion__menu{display:flex;gap:34px}
.navegacion__menu a{
  color:#c9dbec;font-weight:600;font-size:.95rem;position:relative;padding:6px 0;
  transition:color .2s;
}
.navegacion__menu a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:2px;
  background:var(--lima);border-radius:2px;transition:width .25s;
}
.navegacion__menu a:hover,.navegacion__menu a.activo{color:var(--blanco)}
.navegacion__menu a:hover::after,.navegacion__menu a.activo::after{width:100%}
.navegacion__cta{display:flex;align-items:center;gap:18px}
.navegacion__tel{color:#c9dbec;font-size:.9rem;font-weight:600}
.hamburguesa{display:none;background:none;border:0;cursor:pointer;padding:8px}
.hamburguesa span{display:block;width:26px;height:2.5px;background:#fff;margin:6px 0;border-radius:2px;transition:.3s}

/* ---------- botones ---------- */
.boton{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--display);font-weight:700;font-size:.95rem;
  padding:15px 30px;border-radius:999px;transition:transform .2s,box-shadow .2s,background .2s;
  cursor:pointer;border:0;
}
.boton--verde{background:var(--verde);color:#fff;box-shadow:0 12px 30px -10px rgba(29,164,94,.55)}
.boton--verde:hover{background:var(--verde-osc);transform:translateY(-2px)}
.boton--fantasma{border:1.5px solid rgba(255,255,255,.35);color:#fff}
.boton--fantasma:hover{border-color:var(--lima);color:var(--lima);transform:translateY(-2px)}
.boton--claro{background:var(--tinta);color:#fff}
.boton--claro:hover{background:var(--oceano-2);transform:translateY(-2px)}

/* ---------- héroe ---------- */
.heroe{
  position:relative;overflow:hidden;
  background:
    radial-gradient(900px 500px at 85% -10%,rgba(29,164,94,.28),transparent 60%),
    radial-gradient(700px 480px at -10% 110%,rgba(169,203,234,.20),transparent 60%),
    linear-gradient(160deg,#0a1e33 0%,var(--tinta) 55%,#0c2338 100%);
  color:#fff;
  padding:190px 0 120px;
}
.heroe__malla{
  position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(70% 70% at 50% 30%,#000 40%,transparent 100%);
}
.heroe__fila{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center;position:relative}
.heroe__titulo{
  font-size:clamp(2.4rem,5.4vw,3.9rem);color:#fff;letter-spacing:-.03em;margin:14px 0 22px;
}
.heroe__titulo .subrayado{position:relative;white-space:nowrap;color:var(--lima)}
.heroe__titulo .subrayado::after{
  content:"";position:absolute;left:0;right:0;bottom:.04em;height:.28em;z-index:-1;
  background:rgba(29,164,94,.45);border-radius:6px;
  transform:scaleX(0);transform-origin:left;animation:trazo 1s .5s cubic-bezier(.6,0,.2,1) forwards;
}
@keyframes trazo{to{transform:scaleX(1)}}
.heroe__texto{color:#b8cde0;font-size:1.12rem;max-width:520px;margin-bottom:36px}
.heroe__botones{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:44px}
.heroe__datos{display:flex;gap:38px;flex-wrap:wrap}
.dato strong{font-family:var(--display);font-size:1.7rem;color:var(--lima);display:block;letter-spacing:-.02em}
.dato span{font-size:.85rem;color:#8fa9c0}

/* collage de fotos en abanico — elemento firma */
.abanico{position:relative;height:480px}
.abanico__foto{
  position:absolute;width:62%;border-radius:22px;overflow:hidden;
  border:5px solid rgba(255,255,255,.9);
  box-shadow:0 30px 60px -20px rgba(0,0,0,.55);
  transition:transform .35s cubic-bezier(.3,1.4,.5,1);
}
.abanico__foto img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/5}
.abanico__foto--1{top:6%;left:0;transform:rotate(-7deg);z-index:1}
.abanico__foto--2{top:0;left:26%;transform:rotate(2deg);z-index:3}
.abanico__foto--3{top:14%;right:0;width:48%;transform:rotate(8deg);z-index:2}
.abanico__foto:hover{transform:rotate(0) scale(1.04);z-index:5}
.abanico__chip{
  position:absolute;z-index:6;display:flex;align-items:center;gap:9px;
  background:rgba(255,255,255,.95);color:var(--tinta);
  font-family:var(--display);font-weight:700;font-size:.85rem;
  padding:10px 18px;border-radius:999px;box-shadow:var(--sombra);
  animation:flotar 5s ease-in-out infinite;
}
.abanico__chip--a{bottom:16%;left:4%}
.abanico__chip--b{top:4%;right:6%;animation-delay:-2.5s}
@keyframes flotar{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}

/* ---------- cinta marquee ---------- */
.cinta{background:var(--verde);color:#fff;overflow:hidden;padding:16px 0;transform:rotate(-1deg) scale(1.02)}
.cinta__pista{display:flex;gap:48px;width:max-content;animation:desfile 30s linear infinite}
.cinta span{font-family:var(--display);font-weight:800;font-size:1.05rem;letter-spacing:.14em;white-space:nowrap}
@keyframes desfile{to{transform:translateX(-50%)}}
@media (prefers-reduced-motion:reduce){
  .cinta__pista{animation:none}
  .abanico__chip{animation:none}
  .heroe__titulo .subrayado::after{animation:none;transform:scaleX(1)}
}

/* ---------- tarjetas problema ---------- */
.problema{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.problema__foto{border-radius:var(--radio-lg);overflow:hidden;box-shadow:var(--sombra)}
.problema__foto img{width:100%;height:100%;object-fit:cover}
.problema__lista{display:grid;gap:18px;margin-top:28px}
.problema__item{
  display:flex;gap:18px;background:#fff;border:1px solid var(--borde);
  border-radius:var(--radio);padding:22px 24px;box-shadow:0 8px 24px -14px rgba(8,24,39,.15);
}
.problema__item .icono{font-size:1.6rem;line-height:1}
.problema__item h3{font-size:1.05rem;margin-bottom:4px}
.problema__item p{color:var(--texto-suave);font-size:.95rem}

/* ---------- lecciones ---------- */
.lecciones{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:48px}
.leccion{
  background:#fff;border:1px solid var(--borde);border-radius:var(--radio);
  padding:30px 22px;text-align:center;position:relative;overflow:hidden;
  transition:transform .25s,box-shadow .25s;
}
.leccion::before{
  content:"";position:absolute;inset:auto 0 0 0;height:4px;
  background:linear-gradient(90deg,var(--verde),var(--cielo));
  transform:scaleX(0);transform-origin:left;transition:transform .3s;
}
.leccion:hover{transform:translateY(-6px);box-shadow:var(--sombra)}
.leccion:hover::before{transform:scaleX(1)}
.leccion img{width:64px;height:64px;margin:0 auto 16px}
.leccion h3{font-size:1rem}

/* ---------- características ---------- */
.caracteristicas{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:52px}
.caracteristica{
  background:var(--oceano);border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radio-lg);overflow:hidden;
  transition:transform .25s,border-color .25s;
}
.caracteristica:hover{transform:translateY(-6px);border-color:rgba(155,232,176,.4)}
.caracteristica__foto{height:190px;overflow:hidden}
.caracteristica__foto img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.caracteristica:hover .caracteristica__foto img{transform:scale(1.06)}
.caracteristica__cuerpo{padding:26px 26px 30px}
.caracteristica__cuerpo .emoji{
  display:inline-grid;place-items:center;width:46px;height:46px;border-radius:14px;
  background:rgba(29,164,94,.18);font-size:1.4rem;margin-bottom:14px;
}
.caracteristica h3{font-size:1.15rem;margin-bottom:8px}
.caracteristica p{color:#a9c1d6;font-size:.95rem}

/* ---------- pasos de la app ---------- */
.pasos{display:grid;grid-template-columns:.9fr 1.1fr;gap:64px;align-items:center}
.pasos__telefono{position:relative}
.pasos__telefono img{width:min(360px,80%);margin-inline:auto;filter:drop-shadow(0 30px 50px rgba(8,24,39,.3))}
.pasos__lista{display:grid;gap:0}
.paso{
  display:flex;gap:22px;padding:26px 0;border-bottom:1px solid var(--borde);
}
.paso:last-child{border-bottom:0}
.paso__numero{
  flex:none;width:52px;height:52px;border-radius:16px;display:grid;place-items:center;
  font-family:var(--display);font-weight:800;font-size:1.1rem;color:#fff;
  background:linear-gradient(135deg,var(--verde),var(--verde-osc));
}
.paso:nth-child(2) .paso__numero{background:linear-gradient(135deg,#3f7fb8,#2a5b8a)}
.paso:nth-child(3) .paso__numero{background:linear-gradient(135deg,#7a66d6,#5747ad)}
.paso h3{font-size:1.15rem;margin-bottom:6px}
.paso p{color:var(--texto-suave);font-size:.97rem}

/* ---------- planes ---------- */
.planes{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:52px}
.plan{
  background:#fff;border:1px solid var(--borde);border-radius:var(--radio-lg);
  padding:34px 28px;display:flex;flex-direction:column;gap:14px;
  transition:transform .25s,box-shadow .25s;position:relative;
}
.plan:hover{transform:translateY(-6px);box-shadow:var(--sombra)}
.plan--destacado{background:var(--tinta);border-color:var(--tinta)}
.plan--destacado h3,.plan--destacado .plan__precio{color:#fff}
.plan--destacado p{color:#a9c1d6}
.plan__etiqueta{
  position:absolute;top:-13px;left:28px;background:var(--verde);color:#fff;
  font-family:var(--display);font-weight:700;font-size:.72rem;letter-spacing:.1em;
  text-transform:uppercase;padding:5px 14px;border-radius:999px;
}
.plan h3{font-size:1.02rem}
.plan__precio{font-family:var(--display);font-size:2rem;font-weight:800;letter-spacing:-.02em;color:var(--tinta)}
.plan__precio small{font-size:.85rem;font-weight:600;color:var(--texto-suave)}
.plan p{color:var(--texto-suave);font-size:.93rem;flex:1}

/* ---------- segmentos ---------- */
.segmentos{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:52px}
.segmento{
  border-radius:var(--radio-lg);overflow:hidden;position:relative;min-height:340px;
  display:flex;align-items:flex-end;
}
.segmento img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .5s}
.segmento:hover img{transform:scale(1.05)}
.segmento__velo{
  position:relative;width:100%;padding:70px 26px 26px;color:#fff;
  background:linear-gradient(transparent,rgba(8,24,39,.92));
}
.segmento__velo h3{color:#fff;font-size:1.2rem;margin-bottom:4px}
.segmento__velo p{font-size:.9rem;color:#c4d7e8}

/* ---------- herramientas ---------- */
.herramientas{display:flex;justify-content:center;gap:18px;flex-wrap:wrap;margin-top:40px}
.herramienta{
  display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--borde);
  border-radius:999px;padding:14px 28px;font-family:var(--display);font-weight:700;
  box-shadow:0 8px 24px -16px rgba(8,24,39,.2);
}
.herramienta .punto{width:11px;height:11px;border-radius:50%}

/* ---------- equipo ---------- */
.equipo-banda{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.equipo-banda__foto{border-radius:var(--radio-lg);overflow:hidden;box-shadow:var(--sombra);position:relative}
.equipo-banda__foto img{width:100%;object-fit:cover}
.equipo-banda__sello{
  position:absolute;bottom:18px;left:18px;background:rgba(255,255,255,.95);
  border-radius:999px;padding:9px 18px;font-family:var(--display);font-weight:700;font-size:.85rem;
}

/* miembros */
.departamento{margin-top:70px}
.departamento__cabecera{max-width:720px;margin-bottom:36px}
.departamento__cabecera h3{font-size:1.5rem;margin-bottom:10px}
.departamento__cabecera p{color:var(--texto-suave)}
.miembros{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.miembro{
  background:#fff;border:1px solid var(--borde);border-radius:var(--radio-lg);
  overflow:hidden;transition:transform .25s,box-shadow .25s;
}
.miembro:hover{transform:translateY(-6px);box-shadow:var(--sombra)}
.miembro img{width:100%;aspect-ratio:1/1;object-fit:cover;object-position:top}
.miembro__cuerpo{padding:22px 24px 26px}
.miembro h4{font-size:1.08rem;margin-bottom:6px}
.miembro p{color:var(--texto-suave);font-size:.9rem}

/* ---------- misión / visión ---------- */
.mision-vision{display:grid;grid-template-columns:1fr 1fr;gap:26px;margin-top:52px}
.mv{
  border-radius:var(--radio-lg);padding:40px 36px;color:#fff;position:relative;overflow:hidden;
}
.mv--mision{background:linear-gradient(150deg,#123f68,var(--oceano))}
.mv--vision{background:linear-gradient(150deg,var(--verde-osc),#0d5c37)}
.mv h3{color:#fff;font-size:1.35rem;margin-bottom:14px;display:flex;align-items:center;gap:12px}
.mv p{color:rgba(255,255,255,.88)}
.mv::after{
  content:"🤟";position:absolute;right:-14px;bottom:-22px;font-size:7rem;opacity:.14;transform:rotate(-12deg);
}
.mv--vision::after{content:"✋"}

/* ---------- galería ---------- */
.galeria{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:190px;gap:16px;margin-top:48px}
.galeria a{border-radius:var(--radio);overflow:hidden;display:block}
.galeria img{width:100%;height:100%;object-fit:cover;transition:transform .45s}
.galeria a:hover img{transform:scale(1.07)}
.galeria a:nth-child(1){grid-row:span 2}
.galeria a:nth-child(4){grid-row:span 2}

/* ---------- CTA final ---------- */
.cta-final{
  background:
    radial-gradient(700px 400px at 80% 0%,rgba(29,164,94,.3),transparent 60%),
    var(--tinta);
  border-radius:var(--radio-lg);padding:70px 60px;color:#fff;
  display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center;
}
.cta-final h2{color:#fff;font-size:clamp(1.7rem,3.4vw,2.4rem);margin-bottom:14px}
.cta-final p{color:#a9c1d6;margin-bottom:28px}
.cta-final__derecha{text-align:center}
.cta-final__derecha .manos{font-size:4.4rem;letter-spacing:.1em}

/* ---------- pie ---------- */
.pie{background:#050f1a;color:#94acc097;padding:70px 0 30px}
.pie__fila{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.08)}
.pie__logo{height:44px;width:auto;margin-bottom:18px}
.pie p{font-size:.95rem;color:#8fa9c0}
.pie h4{color:#fff;font-size:1rem;margin-bottom:18px}
.pie ul{display:grid;gap:10px}
.pie a{color:#a9c1d6;font-size:.95rem;transition:color .2s}
.pie a:hover{color:var(--lima)}
.pie__final{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:26px;font-size:.85rem;color:#63809a}

/* ---------- cabecera interna ---------- */
.cabecera-pagina{
  background:
    radial-gradient(700px 380px at 90% -20%,rgba(29,164,94,.25),transparent 60%),
    var(--tinta);
  color:#fff;padding:170px 0 80px;position:relative;overflow:hidden;
}
.cabecera-pagina h1{color:#fff;font-size:clamp(2.2rem,4.6vw,3.2rem);letter-spacing:-.02em;margin:12px 0 14px}
.cabecera-pagina p{color:#a9c1d6;max-width:600px;font-size:1.08rem}

/* ---------- animación al hacer scroll ---------- */
.revelar{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.revelar.visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.revelar{opacity:1;transform:none;transition:none}}

/* accesibilidad */
:focus-visible{outline:3px solid var(--verde);outline-offset:3px;border-radius:6px}

/* ---------- responsivo ---------- */
@media (max-width:1020px){
  .lecciones{grid-template-columns:repeat(3,1fr)}
  .planes{grid-template-columns:repeat(2,1fr)}
  .caracteristicas{grid-template-columns:1fr 1fr}
}
@media (max-width:860px){
  .seccion{padding:72px 0}
  .heroe{padding:150px 0 90px}
  .heroe__fila,.problema,.pasos,.equipo-banda,.mision-vision,.cta-final{grid-template-columns:1fr}
  .abanico{height:400px;max-width:460px;margin-inline:auto}
  .segmentos,.miembros{grid-template-columns:1fr 1fr}
  .galeria{grid-template-columns:1fr 1fr;grid-auto-rows:170px}
  .pie__fila{grid-template-columns:1fr 1fr}
  .navegacion__menu{
    position:fixed;inset:74px 0 auto 0;background:var(--tinta);
    flex-direction:column;gap:0;padding:10px 0 20px;display:none;
    border-bottom:1px solid rgba(255,255,255,.1);
  }
  .navegacion__menu.abierto{display:flex}
  .navegacion__menu a{padding:14px 6vw}
  .navegacion__tel{display:none}
  .hamburguesa{display:block}
  .cta-final{padding:50px 32px}
}
@media (max-width:560px){
  .lecciones{grid-template-columns:1fr 1fr}
  .caracteristicas,.segmentos,.planes,.miembros,.pie__fila{grid-template-columns:1fr}
  .heroe__datos{gap:24px}
  .navegacion__cta .boton{padding:11px 18px;font-size:.85rem}
}