:root{
  --fondo:#0b0b0b; --fondo2:#131313; --tinta:#f5f5f2; --gris:#8a8a8a; --suave:#c4c4c4; --linea:#222;
  --display:"Bricolage Grotesque", system-ui, sans-serif;
  --sans:"Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;overflow-x:clip;background:var(--fondo);color:var(--tinta);font-family:var(--sans);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit}
.env{max-width:1120px;margin:0 auto;padding-inline:24px}
h1,h2{font-family:var(--display);font-weight:800;letter-spacing:-.02em;margin:0;text-wrap:balance}
p{margin:0}

/* barra */
nav{position:fixed;top:0;left:0;right:0;z-index:20;background:var(--fondo);border-bottom:1px solid var(--linea)}
nav .env{display:flex;align-items:center;justify-content:space-between;height:60px;gap:16px}
.marca{display:flex;align-items:center;gap:10px;font-family:var(--display);font-weight:800;font-size:20px;text-decoration:none}
.marca i{width:22px;height:19px;border-radius:9px;background:var(--tinta);display:inline-block;position:relative}
.marca i::before,.marca i::after{content:"";position:absolute;top:7px;width:3px;height:5px;border-radius:2px;background:var(--fondo)}
.marca i::before{left:6px}.marca i::after{right:6px}
.enlaces{display:flex;gap:26px;font-size:14px;color:var(--suave)}
.enlaces a{text-decoration:none}.enlaces a:hover{color:var(--tinta)}
@media (max-width:760px){.enlaces{display:none}}

.boton{display:inline-flex;align-items:center;gap:10px;border-radius:999px;padding:12px 22px;font-weight:600;font-size:15px;text-decoration:none;border:1px solid var(--tinta);transition:transform .15s ease}
.boton:hover{transform:translateY(-1px)}
.boton:focus-visible{outline:1px solid var(--tinta);outline-offset:4px}
.boton.lleno{background:var(--tinta);color:var(--fondo)}
.boton.hueco{border-color:#3a3a3a}
.boton.mini{padding:8px 16px;font-size:14px}
.win{width:15px;height:15px;display:inline-grid;grid-template-columns:1fr 1fr;gap:2px}
.win i{background:currentColor;border-radius:1px}

/* portada */
.portada{min-height:100svh;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding-top:300px;padding-bottom:90px}
.pastilla{display:inline-flex;gap:8px;align-items:center;border:1px solid var(--linea);border-radius:999px;padding:6px 14px;font-size:13px;color:var(--gris);margin-bottom:26px}
.pastilla b{color:var(--tinta);font-weight:600}
.portada h1{font-size:clamp(54px,9.6vw,124px);line-height:.92}
.portada .sub{margin-top:22px;max-width:38ch;font-size:clamp(17px,2vw,19px);color:var(--suave)}
.acciones{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:32px}
.nota{margin-top:16px;font-size:13px;color:var(--gris)}

/* capítulos: texto a un lado, el hueco del otro es para Mallow */
.capitulo{min-height:125svh;display:flex;align-items:center;border-top:1px solid var(--linea);padding-block:110px}
.capitulo .env{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;width:100%}
.capitulo .texto{grid-column:1}
.capitulo.der .texto{grid-column:2}
.num{font-family:var(--display);font-weight:700;font-size:14px;color:var(--gris);margin-bottom:14px}
.capitulo h2,.usos-sec h2,.preguntas h2{font-size:clamp(38px,5.8vw,74px);line-height:1}
h2 em,.portada h1 em{font-style:normal;color:var(--gris)}
.capitulo p,.usos-sec .titular p{margin-top:22px;max-width:44ch;font-size:clamp(17px,1.6vw,20px);color:var(--suave)}
.dice{margin-top:28px;display:flex;gap:12px;align-items:center;font-family:var(--display);font-weight:700;font-size:clamp(18px,1.8vw,22px);color:var(--tinta)}
.dice::before{content:"";width:22px;height:1px;background:var(--gris);flex:0 0 22px}
.dato{margin-top:24px;display:flex;flex-wrap:wrap;gap:8px 24px;font-size:14px;color:var(--gris)}
.dato b{color:var(--tinta);font-weight:600}
@media (max-width:760px){.capitulo .env{grid-template-columns:minmax(0,1fr)}.capitulo.der .texto{grid-column:1}.capitulo{min-height:auto;padding-block:220px 160px}}

/* para quién */
.usos-sec{border-top:1px solid var(--linea);padding-block:240px 220px}
.usos-sec .titular{max-width:760px}
.usos{list-style:none;padding:0;margin:56px 0 0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--linea);border-left:1px solid var(--linea)}
.usos li{border-right:1px solid var(--linea);border-bottom:1px solid var(--linea);padding:26px 24px 30px;display:flex;flex-direction:column;gap:10px;transition:background .25s ease}
.usos li:hover{background:var(--fondo2)}
.usos b{font-family:var(--display);font-weight:800;font-size:22px;letter-spacing:-.01em}
.usos span{color:var(--suave);font-size:15px}
@media (max-width:760px){.usos{grid-template-columns:minmax(0,1fr)}.usos-sec{padding-block:220px 160px}}

/* empresas */
.pasos{list-style:none;padding:0;margin:56px 0 0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border-top:1px solid var(--linea);border-left:1px solid var(--linea);counter-reset:paso}
.pasos li{border-right:1px solid var(--linea);border-bottom:1px solid var(--linea);padding:26px 24px 30px;display:flex;flex-direction:column;gap:10px;counter-increment:paso}
.pasos li::before{content:counter(paso,decimal-leading-zero);font-family:var(--display);font-weight:700;font-size:14px;color:var(--gris)}
.pasos b{font-family:var(--display);font-weight:800;font-size:22px;letter-spacing:-.01em}
.pasos span{color:var(--suave);font-size:15px}
.pasos code{display:block;margin-top:6px;font-size:12.5px;color:var(--tinta);border:1px solid var(--linea);border-radius:10px;padding:10px 12px;overflow-x:auto;white-space:nowrap}
.plan{margin-top:40px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;border:1px solid var(--tinta);border-radius:24px;padding:28px 32px}
.plan .cifra{font-family:var(--display);font-weight:800;font-size:clamp(44px,6vw,72px);letter-spacing:-.03em;line-height:1}
.plan .cifra small{font-size:18px;color:var(--gris);font-weight:700;letter-spacing:0}
.plan ul{list-style:none;padding:0;margin:0;display:grid;gap:6px;color:var(--suave);font-size:15px}
.plan ul li::before{content:"— ";color:var(--gris)}
@media (max-width:760px){.pasos{grid-template-columns:minmax(0,1fr)}.plan{padding:24px}}

/* preguntas: responde Mallow */
.preguntas{border-top:1px solid var(--linea);padding-block:220px 200px}
.preguntas .env{max-width:760px}
.preguntas .titular p{margin-top:12px;color:var(--suave)}
.faq{margin-top:34px}
.faq .p{border-top:1px solid var(--linea)}
.faq .p:last-child{border-bottom:1px solid var(--linea)}
.q{all:unset;box-sizing:border-box;cursor:pointer;width:100%;display:flex;justify-content:space-between;align-items:center;gap:20px;padding:21px 0;font-family:var(--display);font-weight:700;font-size:19px}
.q:focus-visible{outline:1px solid var(--tinta);outline-offset:4px}
.q i{font-style:normal;font-family:var(--sans);font-size:22px;color:var(--gris);transition:transform .35s cubic-bezier(.3,1.6,.5,1)}
.q[aria-expanded="true"] i{transform:rotate(45deg)}
.r{display:flex;gap:14px;align-items:flex-start;padding:0 0 24px}
.r[hidden]{display:none}
.carita{width:36px;height:32px;flex:0 0 36px;border-radius:13px;background:var(--tinta);position:relative;margin-top:4px;animation:flota 2.6s ease-in-out infinite}
.carita::before,.carita::after{content:"";position:absolute;top:10px;width:4px;height:8px;border-radius:3px;background:var(--fondo);animation:parpa 3.6s infinite}
.carita::before{left:10px}.carita::after{right:10px}
.carita b{position:absolute;left:50%;bottom:7px;width:8px;height:3px;margin-left:-4px;border:2px solid var(--fondo);border-top:0;border-radius:0 0 6px 6px}
.r.habla .carita b{animation:boca .28s ease-in-out infinite}
.r.habla .carita{animation:flota 2.6s ease-in-out infinite,charla .56s ease-in-out infinite}
.bocata{position:relative;background:var(--tinta);color:var(--fondo);border-radius:4px 18px 18px 18px;padding:12px 16px;font-size:16px;line-height:1.5;max-width:56ch;min-height:46px;transform-origin:0 0;animation:entra .35s cubic-bezier(.2,.9,.3,1.25)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
@keyframes flota{50%{translate:0 -3px}}
@keyframes charla{50%{scale:1.05 .93}}
@keyframes parpa{0%,93%,100%{scale:1 1}96%{scale:1 .1}}
@keyframes boca{50%{height:6px}}
@keyframes entra{from{opacity:0;transform:translateY(6px) scale(.92)}}

.cierre{min-height:110svh;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;border-top:1px solid var(--linea);padding-block:270px 110px}
.cierre h2{font-size:clamp(52px,9.6vw,124px);line-height:.92}
footer{border-top:1px solid var(--linea);padding-block:26px;font-size:13px;color:var(--gris)}
footer .env{display:flex;justify-content:space-between;flex-wrap:wrap;gap:16px}

/* aparición de textos al llegar */
.revela{opacity:0;transform:translateY(22px);transition:opacity .8s ease,transform .8s cubic-bezier(.2,.75,.2,1);transition-delay:calc(var(--i,0) * 90ms)}
.revela.visto{opacity:1;transform:none}
h1.revela,h2.revela{opacity:1;transform:none;transition:none}
.pal{display:inline-block;overflow:hidden;vertical-align:top;padding-bottom:.1em;margin-bottom:-.1em}
.pal>span{display:inline-block;transform:translateY(108%) rotate(4deg);transform-origin:0 100%;transition:transform 1s cubic-bezier(.2,.8,.2,1);transition-delay:calc(var(--w,0) * 70ms)}
.visto .pal>span{transform:none}

/* Mallow: capa encima de todo, sin interacción */
#escena{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:30}
#susurro{position:fixed;z-index:31;pointer-events:none;background:var(--tinta);color:var(--fondo);font-family:var(--display);font-weight:700;font-size:14px;
  padding:7px 14px;border-radius:999px;white-space:nowrap;opacity:0;transform:translateY(6px) scale(.85);transition:opacity .22s ease,transform .3s cubic-bezier(.2,.9,.3,1.4)}
#susurro.visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.pal>span{transform:none;transition:none}.revela{opacity:1;transform:none;transition:none}#susurro{transition:none}.carita,.carita::before,.carita::after,.carita b{animation:none}}