/* Tutor U Chile: sitio estático. Fuentes autoalojadas (Inter, Instrument Serif; licencias OFL en fonts/). */
@font-face{font-family:Inter;font-weight:400;font-display:swap;src:url(fonts/Inter-400.woff2) format("woff2")}
@font-face{font-family:Inter;font-weight:500;font-display:swap;src:url(fonts/Inter-500.woff2) format("woff2")}
@font-face{font-family:Inter;font-weight:600;font-display:swap;src:url(fonts/Inter-600.woff2) format("woff2")}
@font-face{font-family:Inter;font-weight:700 800;font-display:swap;src:url(fonts/Inter-700.woff2) format("woff2")}
@font-face{font-family:"Instrument Serif";font-style:italic;font-weight:400;font-display:swap;src:url(fonts/InstrumentSerif-Italic.woff2) format("woff2")}

:root{
  --tinta:#0e1b2c; --gris:#475569; --suave:#eef3f8;
  --azul:#1565b6; --azul-hondo:#0b2545; --celeste:#11abd6;
  --rojo:#e52b2b; --verde:#2fae54; --amarillo:#fecb1b;
  --radio:18px; --ancho:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:Inter,system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--tinta);background:#fff;line-height:1.55;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
h1,h2,h3{margin:0;letter-spacing:-.025em;line-height:1.1}
h2{font-size:clamp(30px,5.4vw,52px);font-weight:700}
em{font-family:"Instrument Serif",Georgia,serif;font-style:italic;font-weight:400;letter-spacing:-.01em}
h2 em{display:block;color:var(--azul)}
p{margin:0}
:focus-visible{outline:3px solid var(--amarillo);outline-offset:3px;border-radius:6px}
.v-oculto{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.saltar{position:absolute;left:12px;top:-60px;z-index:100;background:#fff;padding:10px 14px;border-radius:10px;font-weight:600}
.saltar:focus{top:12px}
.contenedor{width:100%;max-width:var(--ancho);margin:0 auto;padding:0 20px}
.eyebrow{font-size:13px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--azul);margin-bottom:14px}
.eyebrow-claro{color:#9fd3ff}

/* Botones */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:46px;padding:12px 22px;border-radius:12px;border:0;font:500 15px/1.2 Inter,sans-serif;text-decoration:none;cursor:pointer;transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease}
.btn:active{transform:scale(.98)}
.btn-negro{background:#0a0d14;color:#fff;box-shadow:0 1px 2px rgba(0,0,0,.12)}
.btn-negro:hover{background:#1e293b;box-shadow:0 10px 24px -10px rgba(10,13,20,.55)}
.btn-claro{background:rgba(255,255,255,.75);color:var(--tinta);border:1px solid rgba(15,23,42,.12);backdrop-filter:blur(8px)}
.btn-claro:hover{background:#fff}
.btn-blanco{background:#fff;color:var(--azul-hondo);font-weight:600}
.btn-blanco:hover{background:#e8f2ff}
.btn-grande{min-height:54px;padding:15px 28px;font-size:16px}

/* Navbar en píldora */
.nav-wrap{position:fixed;inset:12px 12px auto;z-index:50;display:flex;justify-content:center;pointer-events:none}
.nav{pointer-events:auto;width:100%;max-width:1180px;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:8px 8px 8px 14px;background:rgba(255,255,255,.86);backdrop-filter:blur(14px) saturate(1.4);-webkit-backdrop-filter:blur(14px) saturate(1.4);border:1px solid rgba(15,23,42,.08);border-radius:999px;box-shadow:0 8px 30px -14px rgba(11,37,69,.35)}
.nav-marca{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:700;font-size:18px;letter-spacing:-.02em;color:var(--azul-hondo)}
.nav-marca img{width:auto;height:34px}
.nav-links{display:none;list-style:none;margin:0;padding:0;gap:30px}
.nav-links a{text-decoration:none;font-size:15px;font-weight:500;color:#1e293b}
.nav-links a:hover{color:var(--azul)}
.nav-cta{min-height:42px;padding:10px 18px;border-radius:999px}

/* Hero (composición Keelway: cielo, chip social, titular en cuatro tiempos, botón negro) */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;overflow:hidden;padding:112px 0 56px;isolation:isolate}
.cielo{position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,#5aa9e6 0%,#8cc6f0 38%,#cfe8fa 70%,#f3f9ff 100%)}
.cielo-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity 1.2s ease}
.cielo-video.listo{opacity:1}
.cielo::after{content:"";position:absolute;inset:0;background:radial-gradient(70% 55% at 50% 52%,rgba(255,255,255,.82),rgba(255,255,255,.35) 60%,rgba(255,255,255,0) 100%)}
.cielo-pradera{position:absolute;left:-10%;right:-10%;bottom:-18%;height:34%;border-radius:50% 50% 0 0;background:linear-gradient(180deg,#9fd08a,#5ea95a);opacity:.55;filter:blur(2px)}
.cielo-video.listo~.cielo-pradera{opacity:0}
.nube{position:absolute;border-radius:999px;background:#fff;filter:blur(18px);opacity:.85}
.n1{width:46vw;height:12vw;left:-8vw;top:14%}
.n2{width:38vw;height:10vw;right:-6vw;top:24%}
.n3{width:30vw;height:8vw;left:28%;top:6%;opacity:.6}
.n4{width:52vw;height:14vw;right:10%;bottom:12%;opacity:.7}
.hero-in{position:relative;width:100%;max-width:1100px;margin:0 auto;padding:0 20px;text-align:center}
.chip{display:inline-flex;align-items:center;gap:10px;padding:6px 14px 6px 8px;border-radius:999px;background:rgba(238,242,246,.92);border:1px solid rgba(226,232,240,.9);font-size:13.5px;font-weight:500;color:#334155;margin-bottom:26px;box-shadow:0 1px 2px rgba(0,0,0,.04)}
.chip-puntos{display:flex}
.chip-puntos i{width:20px;height:20px;border-radius:7px;border:2px solid #fff;margin-left:-6px;transform:rotate(-12deg)}
.chip-puntos i:first-child{margin-left:0}
.c-az{background:var(--azul)}.c-ro{background:var(--rojo)}.c-ve{background:var(--verde)}.c-am{background:var(--amarillo)}
h1{font-size:clamp(32px,8.4vw,80px);font-weight:800;letter-spacing:-.04em;line-height:1.04;color:#1e2433;margin-bottom:22px}
h1 span{display:block}
.h1-azul{color:var(--azul)}
.hero-bajada{max-width:640px;margin:0 auto 32px;font-size:clamp(16px,2.2vw,19px);color:#3b4656}
.hero-acciones{display:flex;flex-direction:column;gap:12px;align-items:stretch;max-width:360px;margin:0 auto}
.cifras{list-style:none;padding:0;margin:44px auto 0;display:grid;grid-template-columns:repeat(2,1fr);gap:10px;max-width:980px}
.cifras li{background:rgba(255,255,255,.72);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.9);border-radius:16px;padding:16px 12px;text-align:left}
.cifras strong{display:block;font-size:clamp(24px,4vw,34px);font-weight:700;letter-spacing:-.03em;color:var(--azul-hondo);line-height:1.1}
.cifras small{font-size:.5em;font-weight:600;color:var(--azul)}
.cifras span{display:block;font-size:13px;color:#46536a;margin-top:4px;line-height:1.35}

/* Colegios */
.colegios{padding:88px 0;background:#fff}
.colegios-in{display:grid;gap:36px;align-items:center}
.colegios-texto p:not(.eyebrow){color:var(--gris);margin-top:18px;max-width:560px;font-size:17px}
.ramos{list-style:none;padding:0;margin:24px 0 0;display:flex;flex-wrap:wrap;gap:8px}
.ramos li{padding:8px 14px;border-radius:999px;background:var(--suave);font-size:14px;font-weight:500;color:var(--azul-hondo)}
.colegios-insignias{margin:0;padding:34px 24px;border-radius:24px;background:linear-gradient(160deg,#f5f9fd,#e7f0fa);border:1px solid #e1ebf5;display:flex;justify-content:center}
.colegios-insignias img{width:100%;max-width:300px}

/* Programas (composición Tier Cards: campo azul noche, brillo bajo, palabra gigante translúcida, tarjetas de vidrio, interruptor) */
.programas{position:relative;overflow:hidden;padding:96px 0 104px;background:#06142a;color:#fff;isolation:isolate}
.programas-brillo{position:absolute;left:50%;bottom:-30%;width:140%;height:80%;transform:translateX(-50%);background:radial-gradient(50% 50% at 50% 50%,rgba(21,101,182,.75),rgba(17,171,214,.18) 55%,rgba(6,20,42,0) 75%);z-index:-1}
.programas-fondo::before{content:attr(data-texto)}
/* Palabra decorativa como contenido generado: es fondo, no texto que leer, y
   así no cuenta como texto de bajo contraste. */
.programas-fondo{position:absolute;left:50%;top:40px;transform:translateX(-50%);font-weight:800;font-size:clamp(80px,19vw,260px);letter-spacing:-.06em;line-height:1;color:rgba(255,255,255,.045);white-space:nowrap;z-index:-1;user-select:none}
.programas-cab{text-align:center;max-width:720px;margin:0 auto}
.programas h2 em{color:#9fd3ff}
.programas-cab p:not(.eyebrow){color:#b9c7da;margin-top:16px}
.interruptor{position:relative;display:flex;width:max-content;margin:32px auto 36px;padding:5px;border-radius:999px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14)}
.int-op{position:relative;z-index:1;border:0;background:none;color:#cfdbea;font:600 14px Inter,sans-serif;padding:11px 20px;border-radius:999px;cursor:pointer;min-width:132px;transition:color .25s}
.int-op[aria-pressed="true"]{color:var(--azul-hondo)}
.int-bola{position:absolute;top:5px;bottom:5px;left:5px;width:calc(50% - 5px);border-radius:999px;background:#fff;transition:transform .35s cubic-bezier(.3,1.4,.5,1)}
.programas[data-modo="mes"] .int-bola{transform:translateX(100%)}
.planes{display:grid;gap:16px}
.plan{display:flex;flex-direction:column;padding:26px 24px;border-radius:22px;background:linear-gradient(180deg,rgba(255,255,255,.09),rgba(255,255,255,.035));border:1px solid rgba(255,255,255,.14);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:inset 0 1px 0 rgba(255,255,255,.12)}
.plan h3{font-size:18px;font-weight:600;color:#e7eef8}
.precio{display:flex;align-items:baseline;gap:4px;margin-top:16px}
.precio strong{font-size:40px;font-weight:700;letter-spacing:-.04em}
.precio span{font-size:15px;color:#a9b8cc}
.plan-nota{color:#a9b8cc;font-size:14px;margin-top:4px}
.ticks{list-style:none;padding:0;margin:20px 0 24px;display:grid;gap:10px;flex:1}
.ticks li{position:relative;padding-left:30px;font-size:14.5px;color:#dbe5f1}
.ticks li::before{content:"";position:absolute;left:0;top:1px;width:20px;height:20px;border-radius:50%;border:1.5px solid rgba(159,211,255,.7);background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M6 10.3l2.6 2.6L14 7.5' fill='none' stroke='%239fd3ff' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/100% no-repeat}
.btn-plan{background:rgba(255,255,255,.1);color:#fff;border:1px solid rgba(255,255,255,.22);border-radius:999px}
.btn-plan:hover{background:#fff;color:var(--azul-hondo)}
.programas[data-modo="hora"] .solo-mes,.programas[data-modo="mes"] .solo-hora{display:none}

/* Testimonios (composición Spotlight Carousel: tarjeta enfocada al frente, el resto atrás bajo un velo) */
.testimonios{padding:96px 0 88px;background:linear-gradient(180deg,#fff,#f2f7fc);overflow:hidden}
.test-cab{text-align:center;margin-bottom:40px}
.foco{position:relative}
.foco-pista{position:relative;height:var(--alto,520px);outline:none}
.foco-card{position:absolute;left:50%;top:0;width:min(86vw,560px);margin:0;padding:30px 26px 26px;background:#fff;border-radius:24px;border:1px solid #e3ebf4;box-shadow:0 30px 60px -30px rgba(11,37,69,calc(.45 * var(--t,0)));transform:translateX(calc(-50% + var(--x,0) * 1%)) scale(calc(.86 + .14 * var(--t,0)));opacity:calc(.35 + .65 * var(--t,0));transition:transform .6s cubic-bezier(.22,1,.36,1),opacity .6s ease,box-shadow .6s ease;cursor:pointer;z-index:var(--z,1)}
.foco-card[data-activa]{cursor:default}
.foco-card::after{content:"";position:absolute;inset:0;border-radius:inherit;background:rgba(242,247,252,calc(.6 - .6 * var(--t,0)));pointer-events:none;transition:background .6s}
.foco-card blockquote{margin:0;font-size:16px;line-height:1.6;color:#253247}
.foco-card figcaption{display:flex;align-items:center;gap:12px;margin-top:22px;font-weight:600}
.foco-card figcaption small{display:block;font-weight:400;color:var(--gris);font-size:13px}
.foco-card figcaption small::before{content:"· "}
.ini{display:grid;place-items:center;width:42px;height:42px;border-radius:13px;color:#fff;font-size:14px;font-weight:700;flex:none}
.ini.c-am{color:var(--tinta)}
.foco-ctrl{display:flex;align-items:center;justify-content:center;gap:18px;margin-top:28px}
.foco-flecha{display:grid;place-items:center;width:46px;height:46px;border-radius:50%;border:1px solid #d6e2ef;background:#fff;color:var(--azul-hondo);cursor:pointer}
.foco-flecha:hover{background:var(--azul-hondo);color:#fff}
.foco-puntos{display:flex;gap:4px}
.foco-puntos button{width:24px;height:24px;border:0;background:none;padding:0;cursor:pointer;display:grid;place-items:center}
.foco-puntos button::before{content:"";width:8px;height:8px;border-radius:99px;background:#bfd0e2;transition:width .3s,background .3s}
.foco-puntos button[aria-current="true"]::before{width:22px;background:var(--azul)}

/* Preu Tesla */
.tesla{padding:88px 0;background:#f2f7fc}
.tesla-in{display:grid;gap:36px;align-items:center}
.tesla-foto{margin:0;border-radius:24px;overflow:hidden;aspect-ratio:1030/695;box-shadow:0 30px 60px -34px rgba(11,37,69,.55)}
.tesla-foto img{width:100%;height:100%;object-fit:cover}
.tesla-texto p:not(.eyebrow){color:var(--gris);margin:18px 0 26px;font-size:17px;max-width:520px}

/* Captura (composición Meadow Capture: cielo a sangre, titular arriba, píldora de vidrio con campo y botón) */
.captura{position:relative;overflow:hidden;padding:110px 0;background:linear-gradient(180deg,#0f3f74 0%,#1565b6 55%,#4b9fe0 100%);color:#fff;isolation:isolate}
.captura-cielo{position:absolute;inset:0;z-index:-1}
.captura-cielo .nube{opacity:.18}
.captura-in{text-align:center}
.captura h2{font-size:clamp(28px,5vw,48px)}
.captura h2 em{color:#d8ecff;display:inline}
.pildora{display:flex;gap:6px;max-width:560px;margin:34px auto 0;padding:6px;border-radius:999px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.35);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.pildora input{flex:1;min-width:0;border:0;background:transparent;color:#fff;font:400 16px Inter,sans-serif;padding:0 16px}
.pildora input::placeholder{color:rgba(255,255,255,.78)}
.pildora input:focus{outline:none}
.pildora:focus-within{outline:3px solid var(--amarillo);outline-offset:3px}
.pildora .btn{border-radius:999px}

/* Contacto (composición Contact Column: campo marino, titular grande a la izquierda, columna de datos con íconos a la derecha, floración de color) */
.contacto{position:relative;overflow:hidden;padding:96px 0;background:var(--azul-hondo);color:#fff;isolation:isolate}
.contacto::before{content:"";position:absolute;inset:0;z-index:-1;background-image:radial-gradient(rgba(255,255,255,.13) 1px,transparent 1.2px);background-size:22px 22px;mask-image:linear-gradient(180deg,transparent,#000 30%,transparent 80%);-webkit-mask-image:linear-gradient(180deg,transparent,#000 30%,transparent 80%)}
.contacto-flor{position:absolute;right:-180px;top:10%;width:520px;height:520px;z-index:-1;border-radius:50%;filter:blur(90px);opacity:.45;background:conic-gradient(from 40deg,var(--azul),var(--verde),var(--amarillo),var(--rojo),var(--azul))}
.contacto-in{display:grid;gap:48px}
.contacto h2 em{color:#9fd3ff}
.contacto-bajada{color:#b9c7da;margin:16px 0 28px;max-width:520px}
.form{display:grid;gap:14px}
.campo{display:flex;flex-direction:column;gap:6px}
.campo label{font-size:13.5px;font-weight:500;color:#cfdbea}
.campo input,.campo select{width:100%;min-height:48px;padding:12px 14px;border-radius:12px;border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.07);color:#fff;font:400 16px Inter,sans-serif}
.campo select option{color:var(--tinta)}
.campo input::placeholder{color:rgba(255,255,255,.5)}
.campo input:focus,.campo select:focus{outline:none;border-color:#9fd3ff;box-shadow:0 0 0 3px rgba(159,211,255,.3)}
.campo [aria-invalid="true"]{border-color:#ff9c9c}
.form-error{color:#ffc4c4;font-size:14px}
.contacto-der{display:grid;gap:26px;align-content:start}
.dato{display:flex;gap:16px}
.dato-ico{display:grid;place-items:center;width:48px;height:48px;border-radius:14px;border:1px solid rgba(255,255,255,.25);color:#9fd3ff;flex:none}
.dato h3{font-size:15px;font-weight:600;color:#9fd3ff;margin-bottom:4px;letter-spacing:0}
.dato a,.dato p{display:block;color:#fff;text-decoration:none;font-size:17px}
.dato a:hover{text-decoration:underline}
.redes{display:flex;gap:10px;margin-top:6px}
.redes a{display:grid;place-items:center;width:42px;height:42px;border-radius:50%;border:1px solid rgba(255,255,255,.3)}
.redes a:hover{background:#fff;color:var(--azul-hondo);text-decoration:none}

/* Pie (composición Dune Card: paisaje en capas con una tarjeta blanca flotando en el tercio superior) */
.pie{position:relative;padding:90px 0 120px;background:#eaf3fb;overflow:hidden;isolation:isolate}
.pie-cerros{position:absolute;inset:auto 0 0 0;width:100%;height:78%;z-index:-1}
.pie-card{background:#fff;border-radius:26px;padding:28px 24px;box-shadow:0 40px 80px -40px rgba(11,37,69,.5);display:grid;gap:28px}
.pie-marca img{width:auto;height:110px}
.pie-cols{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.pie-cols h3{font-size:13px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--gris);margin-bottom:10px}
.pie-cols a{display:block;text-decoration:none;font-size:15px;padding:4px 0;color:var(--tinta)}
.pie-cols a:hover{color:var(--azul)}
.pie-base{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;padding-top:18px;border-top:1px solid #e5edf5;font-size:13.5px;color:var(--gris)}

/* WhatsApp flotante */
.wa-flotante{position:fixed;right:16px;bottom:16px;z-index:40;display:grid;place-items:center;width:58px;height:58px;border-radius:50%;background:#1a8f4c;color:#fff;box-shadow:0 14px 30px -10px rgba(10,60,30,.6);transition:transform .2s}
.wa-flotante:hover{transform:scale(1.06)}

/* Revelado al hacer scroll (solo con JS y sin movimiento reducido) */
.js .revela{opacity:0;transform:translateY(22px);transition:opacity .8s ease,transform .8s cubic-bezier(.22,1,.36,1)}
.js .revela.visto{opacity:1;transform:none}

@media (min-width:640px){
  .hero-acciones{flex-direction:row;justify-content:center;max-width:none}
  .cifras{grid-template-columns:repeat(4,1fr)}
  .form{grid-template-columns:1fr 1fr}
  .campo-ancho,.form-error{grid-column:1/-1}
  .planes{grid-template-columns:1fr 1fr}
  .pie-cols{grid-template-columns:repeat(3,1fr)}
  .foco-card{padding:38px 36px 30px}
  .foco-card blockquote{font-size:17px}
}
@media (min-width:900px){
  .nav{padding-left:20px}
  .nav-links{display:flex}
  .colegios-in{grid-template-columns:1.2fr 1fr;gap:64px}
  .tesla-in{grid-template-columns:1.1fr 1fr;gap:64px}
  .contacto-in{grid-template-columns:1.5fr 1fr;gap:80px}
  .contacto-der{padding-top:120px}
  .pie-card{grid-template-columns:auto 1fr;padding:36px 40px;align-items:start}
  .pie-base{grid-column:1/-1}
}
@media (min-width:1100px){
  .planes{grid-template-columns:repeat(4,1fr)}
}
@media (max-width:420px){
  .nav-marca span{font-size:16px}
  .pildora{flex-direction:column;border-radius:22px;padding:8px}
  .pildora input{min-height:46px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
  .js .revela{opacity:1;transform:none}
  .cielo-video{display:none}
}