/* =========================================================
   Nivelación Estudios — nivelacionestudios.cl
   Hoja de estilos única
   ========================================================= */

/* ---------- 1. Tokens ---------- */
:root{
  /* color */
  --accent:#1E63F0;          /* azul eléctrico — botones, enlaces */
  --accent-d:#1748C4;        /* hover del acento */
  --accent-2:#35E3C6;        /* aqua eléctrico — eyebrows e íconos sobre oscuro */
  --ink:#0A1124;             /* azul noche — hero, footer, bloques oscuros */
  --ink-2:#111C36;
  --ink-3:#1A2745;
  --base:#ffffff;
  --base-2:#F4F7FC;
  --base-3:#EDF2FA;
  --line:#E2E9F4;
  --line-d:rgba(255,255,255,.13);
  --text:#3D4859;
  --text-soft:#6D7889;
  --white-70:rgba(255,255,255,.72);
  --white-55:rgba(255,255,255,.56);

  /* forma */
  --r-s:10px;
  --r-m:16px;
  --r-l:22px;
  --r-xl:30px;
  --sh-s:0 2px 10px rgba(10,17,36,.06);
  --sh-m:0 16px 44px rgba(10,17,36,.10);
  --sh-l:0 34px 80px rgba(10,17,36,.18);

  /* medida */
  --container:1200px;
  --gap:28px;
  --header-h:78px;

  /* tipografía */
  --font:'Geist','Segoe UI',sans-serif;
  --font-mono:'Geist Mono',ui-monospace,monospace;

  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:1rem;
  line-height:1.68;
  color:var(--text);
  background:var(--base);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-decoration:none}
button{font:inherit}
h1,h2,h3,h4,h5{
  margin:0;
  font-family:var(--font);
  color:var(--ink);
  font-weight:700;
  line-height:1.14;
  letter-spacing:-.02em;
}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}

/* ⛔ Texto claro sobre fondo oscuro o imagen — cubre TAMBIÉN los títulos.
   El reset de arriba (h1,h2… con color de elemento) gana a la herencia. */
.hero h1,.hero h2,.hero h3,.hero h4,
.page-hero h1,.page-hero h2,.page-hero h3,.page-hero h4,
.cta h1,.cta h2,.cta h3,.cta h4,
.section--dark h1,.section--dark h2,.section--dark h3,.section--dark h4,
.site-footer h1,.site-footer h2,.site-footer h3,.site-footer h4,
.quote h1,.quote h2,.quote h3,.quote h4,
.school-block h1,.school-block h2,.school-block h3,.school-block h4,
.price-box h1,.price-box h2,.price-box h3,.price-box h4,
.plan-card--feat h1,.plan-card--feat h2,.plan-card--feat h3,.plan-card--feat h4{color:#fff}

.hero,.page-hero,.cta,.section--dark,.quote,.school-block,.price-box{color:var(--white-70)}

/* ---------- 3. Utilidades ---------- */
.container{width:min(100% - 40px,var(--container));margin-inline:auto}
.section{padding-block:clamp(64px,7.2vw,104px)}
.section--tight{padding-block:clamp(48px,5vw,70px)}
.section--alt{background:var(--base-2)}
.section--dark{background:var(--ink);position:relative}
.measure{max-width:62ch}
.center{text-align:center}
.center .measure{margin-inline:auto}

.eyebrow{
  display:block;
  font-family:var(--font-mono);
  font-size:.72rem;
  font-weight:500;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--accent);
  margin:0 0 7px;
}
.section--dark .eyebrow,.hero .eyebrow,.page-hero .eyebrow,.cta .eyebrow,.quote .eyebrow{color:var(--accent-2)}

.h-xl{font-size:clamp(2.1rem,5vw,3.5rem)}
.h-l{font-size:clamp(1.8rem,3.5vw,2.65rem)}
.h-m{font-size:clamp(1.35rem,2.2vw,1.72rem)}
.h-s{font-size:1.12rem}
.section-head{margin-bottom:clamp(34px,4vw,54px)}
.section-head h2{margin-top:15px}
.section-head p{margin-top:16px;font-size:1.06rem}
.lead{font-size:1.09rem;line-height:1.72}

/* ---------- 4. Botones ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;
  border:1px solid transparent;border-radius:999px;
  font-weight:600;font-size:.95rem;letter-spacing:-.01em;
  cursor:pointer;text-align:center;
  transition:background .25s var(--ease),color .25s var(--ease),
             border-color .25s var(--ease),transform .25s var(--ease),
             box-shadow .25s var(--ease);
}
.btn svg{width:17px;height:17px;flex:none}
.btn--primary{background:var(--accent);color:#fff;box-shadow:0 10px 26px rgba(30,99,240,.28)}
.btn--primary:hover{background:var(--accent-d);transform:translateY(-2px);box-shadow:0 14px 32px rgba(30,99,240,.34)}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn--ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
/* fantasma sobre fondo oscuro: el texto se adapta */
.hero .btn--ghost,.page-hero .btn--ghost,.cta .btn--ghost,.section--dark .btn--ghost{
  border-color:rgba(255,255,255,.30);color:#fff;
}
.hero .btn--ghost:hover,.page-hero .btn--ghost:hover,.cta .btn--ghost:hover,.section--dark .btn--ghost:hover{
  border-color:var(--accent-2);color:var(--accent-2);background:rgba(255,255,255,.04);
}
.btn--sm{padding:10px 20px;font-size:.88rem}
.btn--block{display:flex;width:100%}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.center .btn-row{justify-content:center}

/* enlace con flecha */
.arrow-link{
  display:inline-flex;align-items:center;gap:8px;
  font-weight:600;font-size:.94rem;color:var(--accent);
}
.arrow-link svg{width:16px;height:16px;transition:transform .25s var(--ease)}
.arrow-link:hover svg{transform:translateX(4px)}
.section--dark .arrow-link,.cta .arrow-link{color:var(--accent-2)}

/* ---------- 5. Header ---------- */
.site-header{
  position:fixed;inset:0 0 auto 0;
  z-index:90;                       /* SIEMPRE por encima del backdrop (70) */
  height:var(--header-h);
  display:flex;align-items:center;
  transition:background .3s var(--ease),box-shadow .3s var(--ease),height .3s var(--ease);
}
.site-header::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(to bottom,rgba(10,17,36,.72),rgba(10,17,36,0));
  transition:opacity .3s var(--ease);
}
.site-header.is-stuck{background:rgba(255,255,255,.94);backdrop-filter:blur(14px);box-shadow:0 1px 0 var(--line),0 8px 30px rgba(10,17,36,.07);height:68px}
.site-header.is-stuck::before{opacity:0}
.header-inner{position:relative;display:flex;align-items:center;gap:24px;width:100%}

/* logo */
.logo{display:inline-flex;align-items:center;gap:11px;flex:none}
.logo-mark{width:38px;height:38px;flex:none;border-radius:11px;display:block}
.logo-text{display:flex;flex-direction:column;line-height:1.05}
.logo-text b{font-size:1.03rem;font-weight:700;letter-spacing:-.025em;color:#fff;transition:color .3s var(--ease)}
.logo-text span{
  font-family:var(--font-mono);font-size:.6rem;font-weight:500;
  letter-spacing:.2em;text-transform:uppercase;color:var(--accent-2);
  transition:color .3s var(--ease);
}
.is-stuck .logo-text b{color:var(--ink)}
.is-stuck .logo-text span{color:var(--accent)}
/* páginas con cabecera clara al tope (no hay: todas las cabeceras son oscuras) */

/* navegación */
.nav{margin-left:auto;display:flex;align-items:center;gap:6px}
.nav a{
  padding:9px 14px;border-radius:999px;
  font-size:.93rem;font-weight:500;color:rgba(255,255,255,.86);
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav a:hover{color:#fff;background:rgba(255,255,255,.10)}
.nav a.is-active{color:#fff;background:rgba(255,255,255,.14)}
.is-stuck .nav a{color:var(--text)}
.is-stuck .nav a:hover{color:var(--ink);background:var(--base-2)}
.is-stuck .nav a.is-active{color:var(--accent);background:rgba(30,99,240,.09)}
.nav .btn{margin-left:10px}
.nav .nav-cta-mobile{display:none}

/* acceso a la intranet */
.nav .nav-acceso{display:inline-flex;align-items:center;gap:7px;margin-left:6px;font-size:.88rem}
.nav .nav-acceso svg{width:15px;height:15px;opacity:.8}

.burger{
  display:none;margin-left:auto;
  width:44px;height:44px;border:1px solid rgba(255,255,255,.26);
  background:rgba(255,255,255,.06);border-radius:12px;
  align-items:center;justify-content:center;cursor:pointer;
}
.burger span{display:block;width:18px;height:1.7px;background:#fff;border-radius:2px;position:relative;transition:background .2s}
.burger span::before,.burger span::after{
  content:'';position:absolute;left:0;width:18px;height:1.7px;background:#fff;border-radius:2px;
  transition:transform .3s var(--ease),top .3s var(--ease);
}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.is-stuck .burger{border-color:var(--line);background:var(--base-2)}
.is-stuck .burger span,.is-stuck .burger span::before,.is-stuck .burger span::after{background:var(--ink)}
body.nav-open .burger span{background:transparent}
body.nav-open .burger span::before{top:0;transform:rotate(45deg)}
body.nav-open .burger span::after{top:0;transform:rotate(-45deg)}

.nav-backdrop{
  position:fixed;inset:0;z-index:70;      /* SIEMPRE por debajo del header (90) */
  background:rgba(10,17,36,.55);backdrop-filter:blur(3px);
  opacity:0;visibility:hidden;transition:opacity .35s var(--ease),visibility .35s;
}
body.nav-open .nav-backdrop{opacity:1;visibility:visible}

/* ---------- 6. Hero ---------- */
.hero{
  position:relative;
  padding-top:calc(var(--header-h) + clamp(64px,9vw,120px));
  padding-bottom:clamp(70px,9vw,120px);
  background:var(--ink);
  overflow:hidden;
  isolation:isolate;
}
.hero-bg{position:absolute;inset:0;z-index:-2}
.hero-bg img{width:100%;height:100%;object-fit:cover;object-position:70% 50%}
.hero::before{
  content:'';position:absolute;inset:0;z-index:-1;
  background:
    linear-gradient(100deg,rgba(10,17,36,.96) 0%,rgba(10,17,36,.88) 42%,rgba(10,17,36,.55) 74%,rgba(10,17,36,.42) 100%),
    linear-gradient(to top,rgba(10,17,36,.9),rgba(10,17,36,0) 55%);
}
.hero-inner{max-width:660px}
.hero h1{margin-top:15px;font-size:clamp(2.2rem,5.2vw,3.7rem);line-height:1.06}
.hero h1 em{font-style:normal;color:var(--accent-2)}
.hero p{margin-top:22px;font-size:clamp(1rem,1.5vw,1.13rem);line-height:1.7;max-width:56ch}

.hero-badges{
  display:flex;flex-wrap:wrap;gap:10px;
  margin-top:38px;padding-top:28px;border-top:1px solid var(--line-d);
}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;
  padding:9px 16px;border:1px solid var(--line-d);border-radius:999px;
  background:rgba(255,255,255,.05);
  font-size:.83rem;font-weight:500;color:#fff;
}
.hero-badge svg{width:16px;height:16px;flex:none;color:var(--accent-2)}

/* ---------- 7. Cabecera de página interior ---------- */
.page-hero{
  position:relative;
  padding-top:calc(var(--header-h) + clamp(52px,6vw,84px));
  padding-bottom:clamp(52px,6vw,84px);
  background:var(--ink);
  overflow:hidden;isolation:isolate;
}
.page-hero-bg{position:absolute;inset:0;z-index:-2}
.page-hero-bg img{width:100%;height:100%;object-fit:cover;object-position:center 45%}
.page-hero::before{
  content:'';position:absolute;inset:0;z-index:-1;
  background:
    linear-gradient(95deg,rgba(10,17,36,.95) 0%,rgba(10,17,36,.86) 48%,rgba(10,17,36,.58) 100%),
    linear-gradient(to top,rgba(10,17,36,.85),rgba(10,17,36,0) 60%);
}
.page-hero h1{margin-top:15px;font-size:clamp(1.95rem,4.2vw,3.05rem)}
.page-hero p{margin-top:18px;max-width:60ch;font-size:1.05rem}
.page-hero-inner{max-width:720px}
.page-hero .price-tag{
  display:inline-flex;align-items:baseline;gap:8px;margin-top:26px;
  padding:11px 20px;border-radius:999px;
  background:rgba(53,227,198,.12);border:1px solid rgba(53,227,198,.34);
}
.page-hero .price-tag b{font-size:1.28rem;color:var(--accent-2);font-weight:700;letter-spacing:-.02em}
.page-hero .price-tag span{font-size:.86rem;color:var(--white-70)}

/* ---------- 8. Grillas y tarjetas ---------- */
.grid{display:grid;gap:var(--gap)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

.card{
  background:var(--base);border:1px solid var(--line);border-radius:var(--r-l);
  padding:32px 30px;height:100%;
  display:flex;flex-direction:column;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease);
}
.card:hover{transform:translateY(-5px);box-shadow:var(--sh-m);border-color:#CFDCF2}
.card h3{margin-bottom:12px;font-size:1.18rem}
.card p{font-size:.97rem;color:var(--text-soft)}
.section--alt .card{background:var(--base)}
.section--dark .card{
  background:rgba(255,255,255,.045);border-color:var(--line-d);color:var(--white-70);
}
.section--dark .card:hover{background:rgba(255,255,255,.075);border-color:rgba(53,227,198,.35)}
.section--dark .card p{color:var(--white-70)}

.card-ico{
  width:52px;height:52px;flex:none;margin-bottom:22px;border-radius:15px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(30,99,240,.09);color:var(--accent);
}
.card-ico svg{width:24px;height:24px}
.section--dark .card-ico{background:rgba(53,227,198,.12);color:var(--accent-2)}

.card-num{
  font-family:var(--font-mono);font-size:.78rem;font-weight:500;letter-spacing:.16em;
  color:var(--accent);margin-bottom:16px;display:block;
}
.section--dark .card-num{color:var(--accent-2)}

/* tarjeta con foto */
.card-photo{
  border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden;
  background:var(--base);height:100%;display:flex;flex-direction:column;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease);
}
.card-photo:hover{transform:translateY(-5px);box-shadow:var(--sh-m)}
.card-photo figure{margin:0;aspect-ratio:4/3;overflow:hidden;background:var(--base-3)}
.card-photo figure img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.card-photo:hover figure img{transform:scale(1.05)}
.card-photo .card-body{padding:26px 26px 30px;display:flex;flex-direction:column;flex:1}
.card-photo h3{margin-bottom:10px;font-size:1.12rem}
.card-photo p{font-size:.95rem;color:var(--text-soft);margin-bottom:18px}
.card-photo .arrow-link{margin-top:auto}

/* ---------- 9. Bloque media + texto ---------- */
.media{display:grid;grid-template-columns:1fr 1fr;gap:clamp(34px,5vw,70px);align-items:center}
.media--flip .media-fig{order:2}
.media-fig{position:relative;margin:0;border-radius:var(--r-xl);overflow:hidden;background:var(--base-3)}
.media-fig img{width:100%;aspect-ratio:3/2;object-fit:cover}
.media-fig::after{
  content:'';position:absolute;inset:0;border-radius:var(--r-xl);
  box-shadow:inset 0 0 0 1px rgba(10,17,36,.07);pointer-events:none;
}
.media-body h2{margin-top:15px}
.media-body p{margin-top:18px}
.media-body .check-list{margin-top:26px}

/* lista con check */
.check-list{display:grid;gap:13px}
.check-list li{display:flex;align-items:flex-start;gap:12px;font-size:.98rem;line-height:1.6}
.check-list li svg{
  width:20px;height:20px;flex:none;margin-top:3px;
  padding:3px;border-radius:50%;
  background:rgba(30,99,240,.10);color:var(--accent);
}
.section--dark .check-list li svg,.plan-card--feat .check-list li svg{
  background:rgba(53,227,198,.14);color:var(--accent-2);
}
.plan-card--feat .check-list li{color:var(--white-70)}

/* ---------- 10. Planes ---------- */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;align-items:stretch}
.plan-card{
  position:relative;display:flex;flex-direction:column;
  background:var(--base);border:1px solid var(--line);border-radius:var(--r-xl);
  padding:34px 30px 34px;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease);
}
.plan-card:hover{transform:translateY(-6px);box-shadow:var(--sh-m)}
.plan-card--feat{
  background:var(--ink);border-color:var(--ink);color:var(--white-70);
  box-shadow:var(--sh-l);
}
.plan-card--feat h3,.plan-card--feat .plan-price b{color:#fff}
.plan-card--feat:hover{transform:translateY(-9px)}
.plan-flag{
  position:absolute;top:-13px;left:50%;transform:translateX(-50%);
  padding:6px 16px;border-radius:999px;white-space:nowrap;
  background:var(--accent-2);color:#052E29;
  font-family:var(--font-mono);font-size:.66rem;font-weight:500;
  letter-spacing:.16em;text-transform:uppercase;
}
.plan-name{margin-bottom:8px;font-size:1.32rem}
.plan-focus{font-size:.95rem;color:var(--text-soft);min-height:3em}
.plan-card--feat .plan-focus{color:var(--white-70)}
.plan-price{
  margin:24px 0;padding:20px 0;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.plan-card--feat .plan-price{border-color:var(--line-d)}
.plan-price b{display:block;font-size:2.05rem;font-weight:700;letter-spacing:-.035em;color:var(--ink);line-height:1.1}
.plan-price span{font-size:.86rem;color:var(--text-soft)}
.plan-card--feat .plan-price span{color:var(--white-55)}
.plan-card .check-list{margin-bottom:28px}
.plan-card .check-list li{font-size:.93rem}
.plan-card .btn{margin-top:auto}
.plan-more{margin-top:14px;text-align:center}
.plan-more .arrow-link{font-size:.88rem}

/* bloque escolar */
.school-block{
  display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(30px,4vw,56px);align-items:center;
  padding:clamp(32px,4vw,52px);border-radius:var(--r-xl);
  background:linear-gradient(120deg,var(--ink) 0%,var(--ink-3) 100%);
  color:var(--white-70);position:relative;overflow:hidden;
}
.school-block h2,.school-block h3{color:#fff}
.school-block .eyebrow{color:var(--accent-2)}
.school-block-fig{margin:0;border-radius:var(--r-l);overflow:hidden}
.school-block-fig img{width:100%;aspect-ratio:4/3;object-fit:cover}
.school-price{
  display:inline-flex;align-items:baseline;gap:8px;margin-top:22px;
  font-size:1.5rem;font-weight:700;color:var(--accent-2);letter-spacing:-.03em;
}
.school-price span{font-size:.85rem;font-weight:500;color:var(--white-55);letter-spacing:0}

/* comparador */
.compare{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.compare-item{
  padding:30px 26px;border-radius:var(--r-l);
  border:1px solid var(--line);background:var(--base);
  display:flex;flex-direction:column;
}
.compare-item .price{
  font-family:var(--font-mono);font-size:.8rem;letter-spacing:.1em;
  color:var(--accent);margin-bottom:14px;display:block;
}
.compare-item h3{font-size:1.08rem;margin-bottom:10px}
.compare-item p{font-size:.95rem;color:var(--text-soft);margin-bottom:20px}
.compare-item .arrow-link{margin-top:auto}

/* caja de precio de una página de plan */
.price-box{
  display:grid;grid-template-columns:1fr auto;gap:clamp(24px,3vw,44px);align-items:center;
  padding:clamp(30px,4vw,48px);border-radius:var(--r-xl);
  background:linear-gradient(120deg,var(--ink) 0%,var(--ink-3) 100%);
}
.price-box .eyebrow{color:var(--accent-2)}
.price-box b{display:block;margin-top:12px;font-size:clamp(2rem,4vw,2.8rem);font-weight:700;color:#fff;letter-spacing:-.035em;line-height:1.05}
.price-box b small{font-size:.42em;font-weight:500;color:var(--white-55);letter-spacing:0;margin-left:8px}
.price-box p{margin-top:16px;max-width:48ch}
.price-box .btn{white-space:nowrap}

/* intro de página de plan: título a la izquierda, texto a la derecha */
.intro-split{display:grid;grid-template-columns:.95fr 1.05fr;gap:clamp(28px,4vw,64px);align-items:start}
.intro-split p+p{margin-top:1em}
@media (max-width:880px){.intro-split{grid-template-columns:1fr;gap:22px}}

/* lista de "qué incluye" a dos columnas */
.check-list--2col{grid-template-columns:1fr 1fr;column-gap:36px}
@media (max-width:880px){.check-list--2col{grid-template-columns:1fr}}
@media (max-width:880px){.price-box{grid-template-columns:1fr}}

/* ---------- 11. Pasos ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);position:relative}
.step{position:relative;padding-top:30px}
.step::before{
  content:'';position:absolute;top:0;left:0;right:0;height:2px;
  background:var(--line);
}
.step::after{
  content:'';position:absolute;top:-4px;left:0;width:10px;height:10px;border-radius:50%;
  background:var(--accent);
}
.section--dark .step::before{background:var(--line-d)}
.section--dark .step::after{background:var(--accent-2)}
.step h3{font-size:1.08rem;margin:14px 0 10px}
.step p{font-size:.95rem;color:var(--text-soft)}
.section--dark .step p{color:var(--white-70)}
.step .card-num{margin-bottom:0}

/* ---------- 12. Cita destacada ---------- */
.quote{
  background:var(--ink);border-radius:var(--r-xl);
  padding:clamp(40px,5vw,64px);text-align:center;position:relative;overflow:hidden;
}
.quote::before{
  content:'';position:absolute;inset:auto -10% -60% auto;width:60%;aspect-ratio:1;
  background:radial-gradient(circle,rgba(30,99,240,.35),transparent 65%);
}
.quote blockquote{margin:0;position:relative}
.quote p{font-size:clamp(1.25rem,2.4vw,1.72rem);line-height:1.42;color:#fff;font-weight:600;letter-spacing:-.02em;max-width:22ch;margin-inline:auto}
.quote cite{
  display:block;margin-top:22px;font-style:normal;
  font-family:var(--font-mono);font-size:.74rem;letter-spacing:.16em;
  text-transform:uppercase;color:var(--accent-2);
}

/* ---------- 13. FAQ ---------- */
.faq{max-width:840px;margin-inline:auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 0;background:none;border:0;cursor:pointer;text-align:left;
  font-size:1.05rem;font-weight:600;color:var(--ink);letter-spacing:-.015em;
  transition:color .22s var(--ease);
}
.faq-q:hover{color:var(--accent)}
.faq-q svg{width:20px;height:20px;flex:none;color:var(--accent);transition:transform .35s var(--ease)}
.faq-item.is-open .faq-q svg{transform:rotate(180deg)}
.faq-a{overflow:hidden;height:0;transition:height .4s var(--ease)}
.faq-a > div{padding:0 0 26px;max-width:70ch;color:var(--text-soft);font-size:.99rem}

/* ---------- 14. Estadísticas / datos ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap)}
.stat b{
  display:block;font-size:clamp(1.9rem,3.4vw,2.6rem);font-weight:700;
  letter-spacing:-.035em;color:var(--ink);line-height:1.05;
}
.section--dark .stat b{color:#fff}
.stat span{display:block;margin-top:8px;font-size:.92rem;color:var(--text-soft)}
.section--dark .stat span{color:var(--white-55)}

/* ---------- 15. CTA sobre el footer ---------- */
.cta{
  position:relative;overflow:hidden;isolation:isolate;
  padding-block:clamp(72px,8vw,116px);
  background:var(--ink);text-align:center;
}
.cta-bg{position:absolute;inset:0;z-index:-2}
.cta-bg img{width:100%;height:100%;object-fit:cover;object-position:center 40%}
.cta::before{
  content:'';position:absolute;inset:0;z-index:-1;
  background:linear-gradient(to right,rgba(10,17,36,.93),rgba(10,17,36,.80) 55%,rgba(10,17,36,.90));
}
.cta h2{margin-top:15px;font-size:clamp(1.85rem,3.8vw,2.75rem);max-width:20ch;margin-inline:auto}
.cta p{margin-top:20px;max-width:56ch;margin-inline:auto;font-size:1.05rem}

/* ---------- 16. Contacto ---------- */
.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(34px,5vw,64px);align-items:start}
.contact-list{display:grid;gap:22px;margin-top:30px}
.contact-list li{display:flex;gap:14px;align-items:flex-start}
.contact-ico{
  width:42px;height:42px;flex:none;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(30,99,240,.09);color:var(--accent);
}
.contact-ico svg{width:19px;height:19px}
.contact-list h3{font-size:.8rem;font-family:var(--font-mono);font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--text-soft);margin-bottom:5px}
.contact-list a,.contact-list p{font-size:1rem;color:var(--ink);font-weight:500}
.contact-list a:hover{color:var(--accent)}

.form-card{
  background:var(--base);border:1px solid var(--line);border-radius:var(--r-xl);
  padding:clamp(28px,3.4vw,42px);box-shadow:var(--sh-s);
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:7px}
.field--full{grid-column:1/-1}
.field label{font-size:.84rem;font-weight:600;color:var(--ink)}
.field input,.field textarea{
  width:100%;padding:13px 15px;
  border:1px solid var(--line);border-radius:var(--r-s);
  background:var(--base-2);color:var(--ink);
  font-family:var(--font);font-size:.96rem;
  transition:border-color .22s var(--ease),background .22s var(--ease),box-shadow .22s var(--ease);
}
.field textarea{min-height:140px;resize:vertical}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--accent);background:var(--base);
  box-shadow:0 0 0 4px rgba(30,99,240,.10);
}
.form-card .btn{margin-top:22px}

.form-note{
  display:none;align-items:flex-start;gap:11px;
  margin-bottom:24px;padding:15px 18px;border-radius:var(--r-s);
  font-size:.94rem;line-height:1.55;
}
.form-note.is-ok{display:flex;background:rgba(29,168,120,.10);border:1px solid rgba(29,168,120,.34);color:#146A4C}
.form-note.is-err{display:flex;background:rgba(214,64,64,.09);border:1px solid rgba(214,64,64,.32);color:#9C2626}
.form-note svg{width:19px;height:19px;flex:none;margin-top:1px}

/* ---------- 17. Footer ---------- */
.site-footer{
  background:var(--ink);color:var(--white-70);
  padding-block:clamp(52px,6vw,74px) 30px;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:clamp(26px,3.4vw,48px);
}
.footer-brand p{margin-top:20px;font-size:.94rem;color:var(--white-55);max-width:34ch}
.footer-col h3{
  font-family:var(--font-mono);font-size:.72rem;font-weight:500;
  letter-spacing:.18em;text-transform:uppercase;color:var(--accent-2);
  margin-bottom:20px;
}
.footer-col li{margin-bottom:11px}
.footer-col a{font-size:.94rem;color:var(--white-70);transition:color .22s var(--ease)}
.footer-col a:hover{color:#fff}
.footer-contact li{display:flex;align-items:center;gap:11px;margin-bottom:15px}
.footer-contact svg{width:17px;height:17px;flex:none;color:var(--accent-2)}
.footer-contact a,.footer-contact span{font-size:.94rem;color:var(--white-70)}
.footer-contact a:hover{color:#fff}

.footer-credit{
  margin-top:40px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.12);
  text-align:center;font-size:.8rem;color:rgba(255,255,255,.6);
}
.footer-credit a{color:var(--accent-2);text-decoration:none}
.footer-credit a:hover{color:#7CEEDA}

/* ---------- 18. Animaciones ---------- */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .75s var(--ease),transform .75s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
.reveal[data-delay="1"]{transition-delay:.09s}
.reveal[data-delay="2"]{transition-delay:.18s}
.reveal[data-delay="3"]{transition-delay:.27s}
.reveal[data-delay="4"]{transition-delay:.36s}

/* transiciones de página (cross-fade nativo) */
@view-transition{navigation:auto}
::view-transition-old(root),
::view-transition-new(root){
  animation-duration:.15s;
  animation-timing-function:cubic-bezier(.4,0,.2,1);
}

/* ---------- 19. Responsive ---------- */
@media (max-width:1024px){
  :root{--gap:22px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr);gap:30px}
  .steps{grid-template-columns:repeat(2,1fr);row-gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;row-gap:40px}
  .plans{grid-template-columns:1fr;max-width:520px;margin-inline:auto}
  .plan-card--feat{order:-1}
}

@media (max-width:880px){
  .nav{
    position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:4px;padding:calc(var(--header-h) + 22px) 22px 30px;
    background:var(--ink);
    box-shadow:-20px 0 60px rgba(10,17,36,.45);
    transform:translateX(100%);transition:transform .4s var(--ease);
    overflow-y:auto;
  }
  body.nav-open .nav{transform:none}
  .nav a{color:rgba(255,255,255,.86);padding:14px 16px;border-radius:12px;font-size:1rem}
  .nav a:hover,.nav a.is-active{color:#fff;background:rgba(255,255,255,.09)}
  .is-stuck .nav a{color:rgba(255,255,255,.86)}
  .is-stuck .nav a:hover,.is-stuck .nav a.is-active{color:#fff;background:rgba(255,255,255,.09)}
  .nav .nav-cta-desktop{display:none}
  .nav .nav-cta-mobile{display:flex;margin:18px 0 0}
  .burger{display:inline-flex}
  .media{grid-template-columns:1fr;gap:30px}
  .media--flip .media-fig{order:0}
  .contact-grid{grid-template-columns:1fr}
  .school-block{grid-template-columns:1fr}
  .school-block-fig{order:-1}
  .compare{grid-template-columns:1fr}
  .grid-3{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
}

@media (max-width:560px){
  :root{--header-h:70px}
  .container{width:min(100% - 32px,var(--container))}
  .section{padding-block:clamp(52px,10vw,68px)}
  .grid-4{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr;gap:26px}
  .steps{grid-template-columns:1fr;row-gap:30px}
  .footer-grid{grid-template-columns:1fr;row-gap:34px}
  .form-grid{grid-template-columns:1fr}
  .btn-row{gap:11px}
  .btn{padding:12px 22px;font-size:.92rem}
  .btn-row .btn{flex:1 1 100%}
  .hero h1{font-size:clamp(1.95rem,8vw,2.5rem)}
  .page-hero h1{font-size:clamp(1.75rem,7.4vw,2.2rem)}
  .card{padding:28px 24px}
  .plan-card{padding:30px 24px}
  .quote p{max-width:none}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
  ::view-transition-old(root),::view-transition-new(root){animation:none}
}