@font-face{font-family:"VAG Rounded";src:url(../fonts/vag-rounded.woff2) format("woff2");font-weight:400;font-style:normal;font-display:swap}
:root{
  --night:#0b0326;--night2:#071636;--ink:#0d001a;
  --lime:#acd430;--lime2:#c6e85a;--blue:#1a70a3;--sky:#3fa9f5;
  --text:#f3f1ec;--muted:#b9b6cf;--line:rgba(255,255,255,.12);
  --glass:rgba(16,10,48,.62);
  --font:"VAG Rounded","Helvetica Neue",Helvetica,Arial,sans-serif;
  --book-h:clamp(380px,calc(100svh - 268px),940px);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{
  min-height:100svh;background:var(--night);color:var(--text);font-family:var(--font);
  overflow-x:hidden;-webkit-font-smoothing:antialiased;
}
a{color:inherit}
img{display:block;max-width:100%}

/* ---------- fondo ---------- */
.sky{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden;
  background:
    radial-gradient(120% 80% at 50% 120%,#1c0a52 0%,transparent 60%),
    linear-gradient(180deg,#0a0124 0%,#0b0326 40%,#071636 100%);}
.sky::before{content:"";position:absolute;inset:-10%;opacity:.55;
  background-image:
    radial-gradient(1.2px 1.2px at 22px 34px,#fff 50%,transparent 51%),
    radial-gradient(1px 1px at 120px 80px,#cfe0ff 50%,transparent 51%),
    radial-gradient(1.4px 1.4px at 190px 160px,#fff 50%,transparent 51%),
    radial-gradient(1px 1px at 60px 190px,#e8ffd0 50%,transparent 51%),
    radial-gradient(.9px .9px at 160px 20px,#fff 50%,transparent 51%);
  background-size:230px 230px;}
.sky::after{content:"";position:absolute;inset:-10%;opacity:.35;
  background-image:
    radial-gradient(1px 1px at 40px 300px,#fff 50%,transparent 51%),
    radial-gradient(1.6px 1.6px at 330px 120px,#d9ecff 50%,transparent 51%),
    radial-gradient(1px 1px at 250px 390px,#fff 50%,transparent 51%),
    radial-gradient(1.2px 1.2px at 410px 260px,#f0ffd6 50%,transparent 51%);
  background-size:470px 430px;background-position:90px 40px}
.glow{position:absolute;border-radius:50%;filter:blur(70px);will-change:transform}
.glow.lime{width:62vmax;height:62vmax;left:-26vmax;bottom:-34vmax;
  background:radial-gradient(circle,rgba(172,212,48,.42) 0%,rgba(172,212,48,.10) 45%,transparent 70%);
  animation:drift 18s ease-in-out infinite alternate}
.glow.blue{width:58vmax;height:58vmax;right:-24vmax;top:-28vmax;
  background:radial-gradient(circle,rgba(26,112,163,.55) 0%,rgba(63,169,245,.12) 45%,transparent 70%);
  animation:drift 22s ease-in-out infinite alternate-reverse}
.arc{position:absolute;left:50%;top:58%;width:150vmax;height:150vmax;transform:translate(-50%,-6%);
  border-radius:50%;border:1px solid rgba(172,212,48,.16);
  box-shadow:0 0 80px rgba(172,212,48,.10),inset 0 0 120px rgba(63,169,245,.08)}
@keyframes drift{to{transform:translate(4vmax,-3vmax) scale(1.06)}}

/* ---------- estructura ---------- */
.wrap{position:relative;z-index:1;min-height:100svh;display:flex;flex-direction:column}
.top{display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px clamp(16px,4vw,48px) 0}
.brand img{height:40px;width:auto}
.pill{display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);text-decoration:none;font-size:14px;
  color:var(--text);transition:background .2s,border-color .2s}
.pill:hover{background:rgba(255,255,255,.09);border-color:rgba(255,255,255,.28)}
.pill svg{width:16px;height:16px}

.intro{text-align:center;padding:14px 16px 6px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--lime)}
.eyebrow::before,.eyebrow::after{content:"";width:22px;height:1px;background:currentColor;opacity:.6}
h1{margin:6px 0 0;font-weight:400;font-size:clamp(26px,3.2vw,38px);line-height:1.1;letter-spacing:-.01em}
h1 em{font-style:normal;color:var(--lime)}

/* ---------- libro ---------- */
.stage{position:relative;flex:1;display:flex;align-items:center;justify-content:center;padding:10px clamp(12px,3vw,40px) 0}
.book-shell{position:relative;width:min(100%,calc(var(--book-h) * 1.25));height:var(--book-h);
  opacity:0;transform:translateY(26px) scale(.97);transition:opacity .9s ease,transform 1s cubic-bezier(.2,.8,.2,1)}
.ready .book-shell{opacity:1;transform:none}
.book-shell::after{content:"";position:absolute;left:12%;right:12%;bottom:-26px;height:46px;border-radius:50%;
  background:radial-gradient(closest-side,rgba(0,0,0,.65),transparent);filter:blur(6px);z-index:-1;
  transition:transform .7s cubic-bezier(.2,.8,.2,1),left .7s,right .7s}
.slide{position:absolute;inset:0;transition:transform .75s cubic-bezier(.3,.7,.2,1)}
.is-cover .slide{transform:translateX(-25%)}
.is-back .slide{transform:translateX(25%)}
.is-cover .book-shell::after,.is-back .book-shell::after{left:30%;right:30%}
#book{width:100%;height:100%}
.page{background:#0d001a;overflow:hidden}
.page picture,.page img{width:100%;height:100%;object-fit:cover;user-select:none;-webkit-user-drag:none}
.page .ph{position:absolute;inset:0;background:linear-gradient(110deg,#120030 30%,#1b1150 50%,#120030 70%);background-size:200% 100%;animation:shine 1.6s linear infinite;z-index:-1}
@keyframes shine{to{background-position:-200% 0}}
.stf__item{box-shadow:0 30px 60px -20px rgba(0,0,0,.55)}
.stf__item.--left::after,.stf__item.--right::after{content:"";position:absolute;top:0;bottom:0;width:9%;pointer-events:none;z-index:3}
.stf__item.--left::after{right:0;background:linear-gradient(90deg,transparent,rgba(0,0,0,.28) 85%,rgba(0,0,0,.45))}
.stf__item.--right::after{left:0;background:linear-gradient(270deg,transparent,rgba(255,255,255,.05) 60%,rgba(0,0,0,.35))}
.--portrait .stf__item::after,.stf__item.--hard::after{display:none}

.hint{position:absolute;left:50%;bottom:-4px;transform:translate(-50%,100%);font-size:13px;color:var(--muted);
  display:flex;align-items:center;gap:8px;white-space:nowrap;transition:opacity .4s}
.hint svg{width:18px;height:18px;color:var(--lime);animation:nudge 1.6s ease-in-out infinite}
.opened .hint{opacity:0;pointer-events:none}
@keyframes nudge{50%{transform:translateX(5px)}}

/* ---------- página de cierre (HTML) ---------- */
.page.cta{container-type:inline-size;color:#fff;
  background:
    radial-gradient(95% 60% at 0% 100%,rgba(172,212,48,.42),transparent 60%),
    radial-gradient(80% 50% at 100% 0%,rgba(26,112,163,.55),transparent 60%),
    linear-gradient(180deg,#10052d,#0d001a 55%,#071636)}
.cta-in{position:absolute;inset:0;padding:9cqw 9cqw 8cqw;display:flex;flex-direction:column}
.cta-in::before{content:"";position:absolute;right:-30cqw;top:-62cqw;width:110cqw;height:110cqw;border-radius:50%;
  border:.4cqw solid rgba(172,212,48,.45);box-shadow:0 0 6cqw rgba(172,212,48,.25),inset 0 0 6cqw rgba(63,169,245,.2)}
.page .cta-sym{width:14cqw;height:auto;object-fit:contain}
.cta .k{margin-top:9cqw;font-size:3.1cqw;letter-spacing:.3em;text-transform:uppercase;color:var(--lime)}
.cta h2{margin:2.5cqw 0 0;font-weight:400;font-size:10cqw;line-height:1.02;letter-spacing:-.02em}
.cta h2 span{color:var(--lime)}
.cta p{margin:5cqw 0 0;font-size:3.9cqw;line-height:1.5;color:#d9d6ea;max-width:80cqw}
.card{position:relative;margin-top:auto;padding:5.5cqw;border-radius:4cqw;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);backdrop-filter:blur(4px)}
.card b{display:block;font-weight:400;font-size:4.6cqw}
.card small{display:block;font-size:3.2cqw;color:var(--lime);margin-top:.8cqw}
.card ul{list-style:none;margin:3.6cqw 0 0;padding:0;font-size:3.4cqw;line-height:1.75;color:#e8e6f3}
.card a{text-decoration:none}
.cta-btns{position:relative;display:flex;gap:3cqw;margin-top:4.5cqw}
.cta-btns a{flex:1;display:flex;align-items:center;justify-content:center;gap:2cqw;height:11cqw;border-radius:99px;
  font-size:3.5cqw;text-decoration:none;white-space:nowrap}
.cta-btns .a1{background:var(--lime);color:#14102a}
.cta-btns .a2{border:1px solid rgba(255,255,255,.35);color:#fff}
.cta-btns svg{width:4.4cqw;height:4.4cqw}

/* ---------- controles ---------- */
.bar{position:relative;z-index:2;display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap;
  margin:44px auto 0;padding:8px;border-radius:999px;background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:0 20px 50px -20px rgba(0,0,0,.6);
  opacity:0;transform:translateY(12px);transition:opacity .8s .35s,transform .8s .35s}
.ready .bar{opacity:1;transform:none}
.nav{display:flex;align-items:center;gap:4px}
.ib{width:44px;height:44px;border-radius:50%;border:0;background:transparent;color:var(--text);cursor:pointer;
  display:grid;place-items:center;transition:background .2s,color .2s}
.ib:hover:not(:disabled){background:rgba(255,255,255,.1)}
.ib:disabled{opacity:.3;cursor:default}
.ib svg{width:20px;height:20px}
.count{min-width:118px;text-align:center;font-size:14px;color:var(--muted);font-variant-numeric:tabular-nums}
.count strong{color:var(--text);font-weight:400}
.sep{width:1px;height:26px;background:var(--line)}
.btn{display:inline-flex;align-items:center;gap:9px;height:44px;padding:0 18px;border-radius:999px;font-size:14px;
  text-decoration:none;border:1px solid transparent;cursor:pointer;transition:transform .15s,background .2s,box-shadow .2s;font-family:inherit}
.btn svg{width:18px;height:18px;flex:none}
.btn.dl{background:var(--lime);color:#15102c;box-shadow:0 8px 24px -8px rgba(172,212,48,.55)}
.btn.dl:hover{background:var(--lime2);transform:translateY(-1px)}
.btn.dl small{font-size:12px;opacity:.72}
.btn.wa{background:rgba(255,255,255,.06);border-color:var(--line);color:var(--text)}
.btn.wa:hover{background:rgba(37,211,102,.16);border-color:rgba(37,211,102,.5)}
.progress{position:absolute;left:28px;right:28px;bottom:-1px;height:2px;border-radius:2px;overflow:hidden}
.progress i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--sky),var(--lime));transition:width .6s ease}

:focus-visible{outline:2px solid var(--lime);outline-offset:3px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

footer{padding:26px 16px 22px;text-align:center;font-size:12px;color:rgba(255,255,255,.5)}
footer a{text-decoration:none;color:rgba(255,255,255,.7)}

/* pantalla completa */
.stage:fullscreen{background:#0b0326;padding:24px}
.stage:fullscreen .book-shell{--book-h:calc(100vh - 60px)}
.stage:-webkit-full-screen{background:#0b0326;padding:24px}

/* ---------- responsive ---------- */
@media (max-width:760px){
  :root{--book-h:clamp(420px,calc(100svh - 300px),720px)}
  .brand img{height:32px}
  .pill{height:36px;padding:0 13px;font-size:13px}
  .pill .lg{display:none}
  .intro{padding-top:12px}
  .book-shell{width:min(100%,calc(var(--book-h) * .625))}
  .is-cover .slide,.is-back .slide{transform:none}
  .bar{border-radius:26px;margin:40px 16px 0;padding:8px;gap:8px}
  .nav{width:100%;justify-content:space-between}
  .sep.v{display:none}
  .actions{display:flex;gap:8px;width:100%}
  .actions .btn{flex:1;justify-content:center;padding:0 12px}
  .fs{display:none}
}
@media (min-width:761px){.actions{display:flex;gap:10px;align-items:center}}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition-duration:.01ms!important;transition-delay:0s!important}
}
noscript .ns{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px;padding:16px}

/* grosor del libro cerrado */
.is-cover .stf__item.--right{box-shadow:1px 0 0 #2a2350,2px 0 0 rgba(200,196,226,.38),3px 0 0 #221c44,4px 0 0 rgba(200,196,226,.24),5px 0 0 #1b1638,0 30px 60px -20px rgba(0,0,0,.6)}
.is-back .stf__item.--left{box-shadow:-1px 0 0 #2a2350,-2px 0 0 rgba(200,196,226,.38),-3px 0 0 #221c44,-4px 0 0 rgba(200,196,226,.24),-5px 0 0 #1b1638,0 30px 60px -20px rgba(0,0,0,.6)}
.btn{white-space:nowrap}
@media (max-width:420px){
  .actions .btn{font-size:13.5px;gap:7px;padding:0 10px}
  .actions .btn.dl{flex:1.35}
  .btn.dl small{display:none}
}

/* ---------- flechas sobre el libro, puntos y toque tipo historia ---------- */
.book-shell{touch-action:pan-y}
.edge{position:absolute;top:50%;z-index:20;width:52px;height:52px;margin-top:-26px;border-radius:50%;border:1px solid rgba(255,255,255,.28);
  background:rgba(11,3,38,.55);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);color:#fff;cursor:pointer;
  display:grid;place-items:center;box-shadow:0 10px 28px -8px rgba(0,0,0,.6);
  transition:opacity .35s,transform .2s,background .2s,right .75s cubic-bezier(.3,.7,.2,1),left .75s cubic-bezier(.3,.7,.2,1)}
.edge svg{width:24px;height:24px}
.edge:hover{background:rgba(172,212,48,.9);color:#14102a;transform:scale(1.06)}
.next-edge{right:-26px;background:var(--lime);color:#14102a;border-color:transparent}
.prev-edge{left:-26px}
.is-cover .next-edge{right:calc(25% - 26px)}
.is-back .prev-edge{left:calc(25% - 26px)}
.edge[hidden]{display:grid;opacity:0;pointer-events:none}
.next-edge::before{content:"";position:absolute;inset:-1px;border-radius:50%;border:2px solid var(--lime);animation:ping 1.8s cubic-bezier(.2,.6,.3,1) infinite}
.opened .next-edge::before{animation-iteration-count:2}
@keyframes ping{0%{transform:scale(1);opacity:.85}80%,100%{transform:scale(1.7);opacity:0}}
.dots{position:absolute;left:50%;bottom:-4px;transform:translate(-50%,100%);display:flex;gap:7px;padding-top:2px;opacity:0;transition:opacity .4s}
.opened .dots{opacity:1}
.dots i{width:7px;height:7px;border-radius:99px;background:rgba(255,255,255,.28);transition:width .35s,background .35s}
.dots i.on{width:22px;background:var(--lime)}
@media (max-width:760px){
  .is-cover .next-edge,.next-edge{right:-14px}
  .is-back .prev-edge,.prev-edge{left:-14px}
  .edge{width:46px;height:46px;margin-top:-23px}
}
#book.back-in{animation:backin .45s cubic-bezier(.2,.8,.2,1)}
@keyframes backin{from{transform:translateX(-14%) rotateY(8deg);opacity:.35}to{transform:none;opacity:1}}