/* Layout: página editorial al estilo Apple dentro del sitio. Fondo blanco, mucho aire, titulares grandes en Figtree, acento vintage con Fraunces cursiva y papel crema en secciones alternas. Verde de la portada como único color de acción. */
:root{
  --white:#ffffff; --paper:#f6f1e7; --card:#f5f5f7; --ink:#1d1d1f; --gray:#6e6e73; --line:#d9d6cf;
  --green:#0e6b3d; --green-d:#0a4a2a; --green-l:#e5f1ea;
  --night:#0a0c16; --cyan:#00f0ff; --pink:#ff2fb0;
  --f-body:'Figtree',system-ui,sans-serif; --f-sub:'Jost','Figtree',sans-serif; --moss:#1e3a2b; --moss2:#16291f; --gold:#d8b45a; --char:#141816; --f-serif:'Fraunces',Georgia,serif; --f-mono:'Barlow Condensed','Arial Narrow',sans-serif;
  --r:12px;
  color-scheme:light;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--white);color:var(--ink);font-family:var(--f-body);font-size:18px;line-height:1.6;-webkit-font-smoothing:antialiased}
.gut{padding-left:max(22px,env(safe-area-inset-left,0px));padding-right:max(22px,env(safe-area-inset-right,0px))}
.in{max-width:1080px;margin:0 auto}
img{max-width:100%}
a{color:inherit}
:focus-visible{outline:3px solid var(--green);outline-offset:3px}
h1,h2,h3{font-weight:700;letter-spacing:-.03em;line-height:1.04;margin:0;text-wrap:balance}
h2{font-size:clamp(34px,5.2vw,60px)}
.it{font-family:var(--f-serif);font-style:italic;font-weight:500;letter-spacing:-.01em}
.label{font-family:var(--f-mono);font-size:16px;letter-spacing:.14em;text-transform:uppercase;color:var(--green);font-weight:500}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.6em;font-family:var(--f-body);font-weight:600;font-size:17px;text-decoration:none;border-radius:var(--r);padding:15px 26px;border:1.5px solid var(--green);cursor:pointer;transition:background .15s,color .15s,transform .15s;line-height:1.1}
.btn svg{width:19px;height:19px;flex:0 0 auto}
.btn-main{background:var(--green);color:#fff}
.btn-main:hover{background:var(--green-d);border-color:var(--green-d)}
.btn-ghost{background:transparent;color:var(--green)}
.btn-ghost:hover{background:var(--green-l)}
.btn-soft{background:var(--card);color:var(--ink);border-color:transparent}
.btn-soft:hover{background:#e8e8ed}
.btn:active{transform:scale(.98)}

/* chrome del sitio (maqueta) */
.logo{font-family:var(--f-body);font-size:22px;font-weight:700;text-transform:none;letter-spacing:0;color:#fff}
.logo b{color:var(--pink)}

/* 1 HERO (fondo blanco, la portada no se corta) */
.hero{background:#fff;min-height:100svh;display:grid;align-items:center;position:relative}
.hero .in{width:100%;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:clamp(8px,3vw,40px);align-items:center}
.hero-copy{display:flex;flex-direction:column;gap:22px;padding-block:40px}
.hero .eyebrow{font-family:var(--f-mono);font-size:16px;letter-spacing:.16em;text-transform:uppercase;color:var(--green);display:flex;gap:10px;align-items:center}
.hero .eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--green);animation:pulse 1.8s infinite}
@keyframes pulse{50%{opacity:.25}}
.hero h1{font-size:clamp(46px,6.6vw,92px);color:var(--ink);letter-spacing:-.04em;line-height:.98}

.hero .sub{margin:0;font-family:var(--f-sub);font-weight:300;font-size:clamp(21px,2.2vw,29px);color:#55555a;max-width:26ch;line-height:1.3;letter-spacing:.01em}
.ctas{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:6px}
.hero .meta{font-family:var(--f-mono);font-size:16px;letter-spacing:.08em;text-transform:uppercase;color:var(--gray);margin-top:6px}
.hero-art{display:flex;flex-direction:column;align-items:center;justify-content:center;min-width:0;position:relative}
.xf-stack{display:grid;justify-items:center;align-items:center}
.xf-img{grid-area:1/1;display:block;height:calc(100svh - 36px);max-height:930px;width:auto;max-width:100%;object-fit:contain;opacity:0;transition:opacity 1.2s ease}
.xf-img.on{opacity:1}
.xf-dots{display:flex;gap:10px;height:36px;align-items:center}
.xf-dots button{width:8px;height:8px;border-radius:50%;border:0;padding:0;background:#c8c8cc;cursor:pointer;transition:background .2s,width .2s}
.xf-dots button.on{background:var(--green);width:24px;border-radius:4px}
@media(max-width:900px){
  .hero{min-height:0}
  .hero .in{grid-template-columns:1fr}
  .hero-art{order:-1;padding-top:8px}
  .xf-img{height:auto;max-height:58svh}
  .hero-copy{padding-block:12px 48px}
}

/* barra de datos */
.facts{background:var(--green)}
.facts .in{display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}
.fact{padding:34px 14px;text-align:center;border-left:1px solid rgba(255,255,255,.2)}
.fact:first-child{border-left:0}
.fact b{display:block;font-size:clamp(28px,3.8vw,48px);font-weight:700;letter-spacing:-.03em;line-height:1.05;color:#fff}
.fact>span{font-family:var(--f-mono);font-size:15px;letter-spacing:.14em;text-transform:uppercase;color:#c3cdc7}
@media(max-width:640px){.facts .in{grid-template-columns:repeat(2,minmax(0,1fr))}.fact:nth-child(3){border-left:0}.fact:nth-child(n+3){border-top:1px solid rgba(255,255,255,.2)}}

section.blk{padding-block:clamp(72px,10vw,128px);position:relative}
.center{text-align:center}
.sec-head{display:flex;flex-direction:column;gap:14px;margin-bottom:44px;max-width:780px}
.center .sec-head{margin-inline:auto;align-items:center}
.sec-head p{margin:0;color:var(--gray);font-size:clamp(18px,1.8vw,21px);line-height:1.55}
.sec-head p strong{color:var(--ink);font-weight:700}

/* 3 DESCRIPCIÓN */
.desc .in{max-width:900px}
.desc .big{font-size:clamp(26px,3.7vw,44px);font-weight:300;letter-spacing:-.02em;line-height:1.2;color:#2b2b2e;margin:0 0 28px;text-wrap:pretty}
.desc .big strong{color:var(--ink);font-weight:700}
.tiles{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin-top:56px;border-top:1px solid var(--line)}
.tile{padding:22px 18px 0 0;font-size:16px;color:var(--ink);font-weight:600;display:flex;flex-direction:column;gap:6px}
.tile small{font-family:var(--f-mono);font-size:15px;color:var(--gray);letter-spacing:.12em;font-weight:400}
@media(max-width:700px){.tiles{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:18px}}

/* 5 HOJEA */
.peek{background:var(--paper)}
.teaser{position:relative;margin:0 auto;max-width:900px;display:block;background:none;border:0;padding:0;cursor:pointer;font:inherit;color:inherit}
.teaser .bk{display:grid;grid-template-columns:1fr 1fr;box-shadow:0 30px 60px -20px rgba(60,40,10,.45),0 8px 18px rgba(60,40,10,.18);border-radius:3px;overflow:hidden;transition:transform .3s}
.teaser:hover .bk{transform:translateY(-4px) scale(1.01)}
.teaser .bk img{display:block;width:100%;height:auto}
.teaser .bk::after{content:"";position:absolute;left:50%;top:0;bottom:0;width:60px;transform:translateX(-50%);background:linear-gradient(90deg,transparent,rgba(0,0,0,.16) 46%,rgba(0,0,0,.22) 50%,rgba(0,0,0,.16) 54%,transparent);pointer-events:none}
.teaser .bk{position:relative}
.after{margin-top:44px;display:flex;flex-direction:column;align-items:center;gap:14px}
.after small{color:var(--gray);font-size:14px}


/* v6: cifras animadas */
.fact{position:relative;overflow:hidden}
.fact b{white-space:nowrap;font-size:clamp(26px,3.4vw,44px)}
.fact b[data-count]{font-variant-numeric:tabular-nums}
.fact::after{content:"";position:absolute;left:50%;bottom:20px;width:34px;height:2px;background:var(--gold);transform:translateX(-50%) scaleX(0);transform-origin:center;transition:transform .9s cubic-bezier(.2,.7,.2,1) .5s}
.js .fact{opacity:0;transform:translateY(26px);filter:blur(6px);transition:opacity .8s ease,transform .9s cubic-bezier(.2,.7,.2,1),filter .8s ease;transition-delay:calc(var(--i)*140ms)}
.js .facts.go .fact{opacity:1;transform:none;filter:none}
.js .facts.go .fact::after{transform:translateX(-50%) scaleX(1);transition-delay:calc(var(--i)*140ms + 700ms)}
.fact .ch{display:inline-block}
.js .fact .ch{opacity:0;transform:translateY(.5em);transition:opacity .5s ease,transform .6s cubic-bezier(.2,.7,.2,1);transition-delay:calc(var(--i)*140ms + var(--c)*70ms + 200ms)}
.js .facts.go .fact .ch{opacity:1;transform:none}
.fact b{padding-bottom:12px;text-shadow:0 0 16px rgba(255,255,255,.32),0 0 3px rgba(255,255,255,.12)}
@media(prefers-reduced-motion:reduce){.js .fact,.js .fact .ch{opacity:1;transform:none;filter:none;transition:none}.fact::after{transform:translateX(-50%) scaleX(1);transition:none}}

/* v6: El libro con galería crossfade */
.desc .in{max-width:1180px}
.desc-grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.3fr);gap:clamp(28px,5vw,72px);align-items:center}
.desc-grid .big{font-size:clamp(18px,1.8vw,21px);line-height:1.55;letter-spacing:0;margin:0 0 18px;max-width:56ch}
.gal{display:flex;flex-direction:column;align-items:center;gap:16px;min-width:0}
.gal-stage{position:relative;width:100%;height:min(60svh,560px);display:grid;place-items:center}
.gal-stage img{position:absolute;max-width:92%;max-height:100%;width:auto;height:auto;object-fit:contain;opacity:0;transform:scale(.94) translateY(10px);transition:opacity 1.1s ease,transform 1.4s cubic-bezier(.2,.7,.2,1);will-change:opacity,transform}
.gal-stage img.on{opacity:1;transform:none}
.gal-stage img.cut{filter:drop-shadow(0 18px 22px rgba(30,20,0,.28))}
.gal-stage img.sticker{border-radius:6px;box-shadow:0 22px 40px -18px rgba(30,20,0,.45),0 3px 8px rgba(30,20,0,.12);transform:scale(.94) translateY(10px) rotate(-2deg)}
.gal-stage img.sticker.on{transform:rotate(-2deg)}
.gal .xf-dots button{background:#c8c8cc}
.gal .xf-dots button.on{background:var(--green)}
.gal-cap{font-family:var(--f-mono);font-size:15px;letter-spacing:.12em;text-transform:uppercase;color:var(--gray)}
@media(max-width:860px){.desc-grid{grid-template-columns:1fr}.gal-stage{height:min(46svh,380px)}}
@media(prefers-reduced-motion:reduce){.gal-stage img,.gal-stage img.on{transform:none}.gal-stage img.sticker,.gal-stage img.sticker.on{transform:rotate(-2deg)}}

/* v6: Hojea el libro en verde medio (no opaca las hojas) */
.peek{background:radial-gradient(120% 90% at 50% 38%,#5fae85 0%,#44936a 55%,#357d58 100%);color:#fff}
.peek .label{color:#e3f3ea}
.peek .sec-head h2{color:#fff}
.peek .sec-head p{color:rgba(255,255,255,.94)}
.peek .sec-head p strong{color:#fff}
.peek .after small{color:rgba(255,255,255,.88)}
.peek .btn-main{background:#fff;color:var(--green-d);border-color:#fff}
.peek .btn-main:hover{background:var(--paper);border-color:var(--paper)}
.peek .teaser .bk{box-shadow:0 34px 60px -22px rgba(8,40,22,.6),0 8px 18px rgba(8,40,22,.25)}

.label,.hero .eyebrow,.deadline,.plan .tag,.fact>span,.social .cap,.logos .cap,.lg small,.hero .meta,.final p,.share .msg b,.sticky small,.price small,.plan .dedic label{font-weight:600}
.label,.hero .eyebrow,.social .cap,.logos .cap{letter-spacing:.2em}
/* 6 VERSIONES */
.deadline{font-family:var(--f-mono);font-size:16px;letter-spacing:.1em;text-transform:uppercase;color:var(--green);background:var(--green-l);border-radius:8px;padding:9px 14px}
.plans{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;align-items:stretch;text-align:left}
.plan{background:var(--card);border:2px solid transparent;border-radius:24px;padding:36px;display:flex;flex-direction:column;gap:22px;position:relative;overflow:hidden;transition:transform .35s cubic-bezier(.2,.7,.2,1),box-shadow .35s,border-color .35s}
.plan:hover{transform:translateY(-6px);box-shadow:0 26px 44px -26px rgba(0,0,0,.35)}
.plan .tag{font-family:var(--f-mono);font-size:15px;letter-spacing:.14em;text-transform:uppercase;color:var(--green);align-self:flex-start;background:var(--green-l);padding:5px 10px;border-radius:6px}
.plan h3{font-size:clamp(26px,2.8vw,34px)}
.price{display:flex;flex-direction:column;align-items:flex-end;gap:8px;width:fit-content}
.price b{font-size:clamp(38px,4.4vw,54px);font-weight:700;letter-spacing:-.03em;line-height:1}
.price small{text-align:right;font-family:var(--f-mono);font-size:15px;color:var(--gray);text-transform:uppercase;letter-spacing:.08em}
.plan ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:0;font-size:17px}
.plan li{display:flex;gap:12px;align-items:flex-start;padding:12px 0;border-top:1px solid var(--line)}
.plan li:first-child{border-top:0}
.plan li::before{content:"";flex:0 0 auto;width:18px;height:18px;margin-top:4px;border-radius:50%;background:var(--green) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M5 10.5l3.2 3.2L15 7' fill='none' stroke='%23fff' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/100% no-repeat}
.plan .btn{margin-top:auto;width:100%}
.plan .dedic{border-radius:12px;padding:14px}
.plan .dedic label{font-family:var(--f-mono);font-size:15px;letter-spacing:.1em;text-transform:uppercase;display:block;margin-bottom:8px}
.plan .dedic input{width:100%;font:inherit;font-size:16px;padding:12px 14px;border:1px solid #cfcabd;border-radius:10px;background:#fff;color:var(--ink)}
/* Edición del autor: tarjeta verde libro con detalles dorados y sello */
.plan.top{background:linear-gradient(160deg,#16653b 0%,#0a3d24 100%);color:#f6f1e7;border-color:rgba(216,180,90,.45)}
.plan.top::after{content:"";position:absolute;inset:0;background:linear-gradient(115deg,transparent 38%,rgba(255,255,255,.14) 50%,transparent 62%);transform:translateX(-130%);transition:transform .9s ease;pointer-events:none}
.plan.top:hover{transform:translateY(-10px) scale(1.012);border-color:var(--gold);box-shadow:0 40px 60px -28px rgba(10,61,36,.8),0 0 0 1px var(--gold)}
.plan.top:hover::after{transform:translateX(130%)}
.plan.top .tag{color:var(--gold);background:rgba(216,180,90,.14);border:1px solid rgba(216,180,90,.5)}
.plan.top h3,.plan.top .price b{color:#fff}
.plan.top .price small{color:#b9d3c3}
.plan.top ul{color:#e9f0ea}
.plan.top li{border-top-color:rgba(255,255,255,.16)}
.plan.top li::before{background-color:var(--gold);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M5 10.5l3.2 3.2L15 7' fill='none' stroke='%230a3d24' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E")}
.plan.top .dedic{background:rgba(255,255,255,.08);border:1px dashed rgba(216,180,90,.55)}
.plan.top .dedic label{color:var(--gold)}
.plan.top .btn-main{background:#f6f1e7;border-color:#f6f1e7;color:#0a3d24}
.plan.top .btn-main:hover{background:#fff;border-color:#fff}
.plan:not(.top) .dedic{background:var(--paper)}
.stamp{position:absolute;top:22px;right:22px;width:86px;height:86px;border-radius:50%;border:2px solid var(--gold);color:var(--gold);display:grid;place-items:center;text-align:center;font-family:var(--f-mono);font-size:9.5px;letter-spacing:.14em;text-transform:uppercase;line-height:1.5;transform:rotate(12deg);box-shadow:inset 0 0 0 4px rgba(216,180,90,.12);transition:transform .4s}
.plan.top:hover .stamp{transform:rotate(-4deg) scale(1.06)}
.trust{display:flex;flex-wrap:wrap;gap:10px 34px;margin-top:34px;font-size:15px;color:var(--gray);justify-content:center}
.trust span{display:inline-flex;gap:10px;align-items:center}
.trust span::before{content:"";width:6px;height:6px;background:var(--green);border-radius:50%}
@media(max-width:760px){.plans{grid-template-columns:1fr}.plan{padding:28px}}

/* 4 AUTOR */
.author{background:var(--moss);color:#e7efe9}
.author .in{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:clamp(28px,6vw,80px);align-items:center}
.author .ph{aspect-ratio:4/5;border-radius:24px;overflow:hidden;background:#8cc4e0;box-shadow:0 30px 60px -24px rgba(0,0,0,.6)}
.author .label{color:#9fd3b5}
.author .ph img{display:block;width:100%;height:100%;object-fit:cover}
.author h2{margin:14px 0 24px;font-size:clamp(32px,4.6vw,54px);color:#fff}
.author p{margin:0 0 16px;color:#cfdcd3;font-size:19px;max-width:54ch;font-weight:300}
.author p strong{color:#fff;font-weight:700}
.social{margin-top:30px;display:flex;flex-direction:column;gap:12px}
.social .cap{font-family:var(--f-mono);font-size:15px;letter-spacing:.16em;text-transform:uppercase;color:#9fb8a8}
.social .row{display:flex;gap:12px;flex-wrap:wrap}
.social a{width:48px;height:48px;border-radius:12px;display:grid;place-items:center;background:rgba(255,255,255,.1);color:#fff;transition:background .2s,color .2s,transform .2s}
.social a:hover{background:#f6f1e7;color:var(--moss);transform:translateY(-3px)}
.social svg{width:22px;height:22px}
@media(max-width:760px){.author .in{grid-template-columns:1fr}.author .ph{max-width:360px}}

/* 7 LOGOS */
.logos{min-height:33svh;display:grid;align-items:center;padding-block:clamp(56px,9vh,96px);border-bottom:1px solid var(--line)}
.logos .in{width:100%;max-width:980px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(36px,6vh,64px) 32px;align-items:start;justify-items:center}
.logos .cap{grid-column:1/-1;font-family:var(--f-mono);font-size:15px;letter-spacing:.16em;text-transform:uppercase;color:var(--gray);text-align:center}
.lg small{text-align:center;line-height:1.5}
@media(max-width:640px){.logos .in{grid-template-columns:1fr}}
.lg{display:flex;flex-direction:column;align-items:center;gap:10px}
.lg .box{min-width:180px;height:60px;border:1px dashed #c4c0b5;border-radius:10px;display:grid;place-items:center;font-weight:700;font-size:18px;letter-spacing:-.01em;color:#9a968b;padding:0 18px}
.lg .box.has{border:0;padding:0;min-width:0;height:112px}
.lg .box.has img{display:block;height:112px;width:auto}
.lg .box.has.fez img{height:92px}
.lg small{font-family:var(--f-mono);font-size:15px;letter-spacing:.1em;text-transform:uppercase;color:var(--gray)}

/* FAQ */
.faq{background:var(--char);color:#f2f4f2}
.faq .label{color:#9fd3b5}
.faq h2{color:#fff}
.faq .in{max-width:820px}
.faq details{border-bottom:1px solid rgba(255,255,255,.14)}
.faq details:first-of-type{border-top:1px solid rgba(255,255,255,.14)}
.faq summary{list-style:none;cursor:pointer;padding:24px 44px 24px 0;font-weight:600;font-size:20px;position:relative;letter-spacing:-.01em}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:4px;top:50%;transform:translateY(-50%);font-weight:400;font-size:30px;color:#8fa497;transition:transform .2s}
.faq details[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq details p{margin:0 0 24px;color:#b8c2bb;max-width:62ch}
.faq a{color:#7fd1a0;font-weight:600}
.contact{margin-top:34px;color:#8fa497;font-size:16px}

/* 8 RECOMIENDA */
.share{background:var(--card)}
.share .row{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.share .btn{background:#1d1d1f;border-color:#1d1d1f;color:#fff}
.share .btn:hover{background:var(--green);border-color:var(--green);color:#fff}
.share .msg{margin:30px auto 0;max-width:580px;background:#fff;border-radius:14px;padding:16px 20px;font-size:15px;text-align:left;color:#46433d}
.share .msg b{font-family:var(--f-mono);font-size:15px;letter-spacing:.12em;text-transform:uppercase;display:block;margin-bottom:6px;color:var(--gray);font-weight:500}

.final{padding-block:clamp(56px,8vw,104px)}
.final .in{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.8fr);gap:clamp(16px,4vw,56px);align-items:center}
.final h2{margin:0 0 16px;max-width:13ch;font-size:clamp(36px,5.4vw,66px)}
.final p{margin:0 0 28px;font-family:var(--f-mono);font-size:16px;letter-spacing:.14em;text-transform:uppercase;color:var(--gray)}
.fc-art{display:flex;justify-content:center}
.fc-art img{display:block;width:auto;height:clamp(280px,44vw,480px);max-width:100%;object-fit:contain}
@media(max-width:760px){.final .in{grid-template-columns:1fr;text-align:center}.final h2{margin-inline:auto}.fc-art{order:-1}}
.sitefoot .in{max-width:1180px;margin:0 auto;display:flex;flex-wrap:wrap;gap:8px 24px;align-items:center;justify-content:space-between}
.sitefoot a{color:inherit}
.sitefoot{background:var(--night);color:#8b96b8;font-family:var(--f-mono);font-size:16px;letter-spacing:.08em;text-transform:uppercase;padding-block:34px;text-align:center}

/* barra fija móvil */
.sticky{position:fixed;left:0;right:0;bottom:0;z-index:20;background:rgba(255,255,255,.92);backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);border-top:1px solid var(--line);display:none;align-items:center;justify-content:space-between;gap:12px;padding:10px max(16px,env(safe-area-inset-right,0px)) calc(10px + env(safe-area-inset-bottom,0px)) max(16px,env(safe-area-inset-left,0px));transform:translateY(110%);transition:transform .25s}
.sticky.on{transform:none}
.sticky span{font-weight:700;font-size:16px;line-height:1.15;letter-spacing:-.02em}
.sticky small{display:block;font-family:var(--f-mono);font-size:13px;color:var(--green);letter-spacing:.12em;text-transform:uppercase;font-weight:500}
.sticky .btn{padding:12px 18px;font-size:15px}
@media(max-width:760px){.sticky{display:flex}body{padding-bottom:70px}}

/* VISOR DE LIBRO (lightbox con efecto de hojear) */
.lb{position:fixed;inset:0;z-index:100;background:#141416;display:none;flex-direction:column;padding-top:env(safe-area-inset-top,0px);color:#fff}
.lb.open{display:flex}
.lb-top{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px max(16px,env(safe-area-inset-right,0px)) 12px max(16px,env(safe-area-inset-left,0px))}
.lb-top .t{font-weight:700;font-size:16px;letter-spacing:-.02em;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lb-top .c{font-family:var(--f-mono);font-size:16px;letter-spacing:.1em;text-transform:uppercase;color:#a1a1a6;white-space:nowrap}
.lb-tools{display:flex;gap:8px}
.ib{width:42px;height:42px;display:grid;place-items:center;border-radius:var(--r);border:0;background:rgba(255,255,255,.1);color:#fff;cursor:pointer}
.ib:hover{background:rgba(255,255,255,.2)}
.ib svg{width:20px;height:20px}
.ib[disabled]{opacity:.25;cursor:default}
.lb-main{position:relative;flex:1;min-height:0;overflow:auto;display:flex;padding:8px 64px}
.lb-main .bookwrap{margin:auto;flex:0 0 auto}
.book{position:relative;width:calc(var(--pw)*2);height:var(--ph);perspective:2600px}
.book::before{content:"";position:absolute;inset:1% 0 -1%;box-shadow:0 30px 60px rgba(0,0,0,.6);border-radius:3px}
.leaf{position:absolute;top:0;left:50%;width:var(--pw);height:var(--ph);transform-origin:left center;transform-style:preserve-3d;transition:transform .95s cubic-bezier(.45,.05,.25,1)}
.leaf.flipped{transform:rotateY(-180deg)}
.nt .leaf,.nt .leaf *{transition:none!important}
.face{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;background:#fbfaf7;overflow:hidden}
.face.back{transform:rotateY(180deg)}
.face img{display:block;width:100%;height:100%;object-fit:cover;user-select:none;-webkit-user-drag:none}
.face::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,0,0,.28),rgba(0,0,0,.08) 5%,transparent 14%);pointer-events:none}
.face::before{content:"";position:absolute;inset:0;background:#000;pointer-events:none;z-index:2}
.face.front::before{opacity:0;transition:opacity .48s ease-out .47s}
.leaf.flipped .face.front::before{opacity:.4;transition:opacity .48s ease-in 0s}
.face.back::before{opacity:.4;transition:opacity .48s ease-in 0s}
.leaf.flipped .face.back::before{opacity:0;transition:opacity .48s ease-out .47s}
.face.blank{display:grid;place-items:center;text-align:center;font-family:var(--f-serif);font-style:italic;color:#a5a094;font-size:calc(var(--ph)*.032);padding:20px}
.hit{position:absolute;top:0;bottom:0;width:50%;z-index:1000;cursor:pointer;background:none;border:0;padding:0}
.hit.l{left:0;cursor:w-resize}.hit.r{right:0;cursor:e-resize}
.hit[disabled]{cursor:default}
.nav{position:absolute;top:50%;transform:translateY(-50%);z-index:5;width:46px;height:46px;border-radius:50%}
.nav.prev{left:max(12px,env(safe-area-inset-left,0px))}.nav.next{right:max(12px,env(safe-area-inset-right,0px))}
.lb-foot{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;padding:12px max(16px,env(safe-area-inset-right,0px)) calc(12px + env(safe-area-inset-bottom,0px)) max(16px,env(safe-area-inset-left,0px))}
.lb-foot small{font-family:var(--f-mono);font-size:15px;letter-spacing:.1em;text-transform:uppercase;color:#a1a1a6}
.lb-foot .btn{padding:12px 22px;font-size:15px}
@media(max-width:700px){.lb-main{padding:8px}.nav{display:none}.lb-top .t{display:none}}

/* notas de maqueta */
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.hero .eyebrow i{animation:none}}