/* Classics Hook · web (rev. 2026-11-08 noche) · cálida, editorial, sin servicios externos */
@font-face{font-family:"Plex";src:url(fonts/IBMPlexSans_400Regular.ttf) format("truetype");font-weight:400;font-display:swap}
@font-face{font-family:"Plex";src:url(fonts/IBMPlexSans_500Medium.ttf) format("truetype");font-weight:500;font-display:swap}
@font-face{font-family:"Plex";src:url(fonts/IBMPlexSans_600SemiBold.ttf) format("truetype");font-weight:600 700;font-display:swap}
@font-face{font-family:"Fraunces";src:url(fonts/Fraunces_400Regular.ttf) format("truetype");font-weight:400;font-display:swap}
@font-face{font-family:"Fraunces";src:url(fonts/Fraunces_500Medium.ttf) format("truetype");font-weight:500;font-display:swap}
@font-face{font-family:"Fraunces";src:url(fonts/Fraunces_600SemiBold.ttf) format("truetype");font-weight:600 700;font-display:swap}
@font-face{font-family:"Mono";src:url(fonts/JetBrainsMono_500Medium.ttf) format("truetype");font-weight:500;font-display:swap}

:root{
  --bg:#12110F; --bg2:#191714; --fg:#F3EEE3; --fg2:#BDB5A6; --fg3:#8A8274;
  --acento:#FF7A57; --acento-t:#1A120E; --ambar:#F2B84B;
  --papel:#F3EEE3; --tinta:#1B1814; --tinta2:#5E574C;
  --card:rgba(243,238,227,.04); --card2:rgba(243,238,227,.08); --line:rgba(243,238,227,.11);
  --nav:rgba(18,17,15,.78);
  --sans:"Plex",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif; --serif:"Fraunces",Georgia,"Times New Roman",serif; --mono:"Mono",ui-monospace,monospace;
  --r:18px; --ease:cubic-bezier(.22,1,.36,1);
}
@media (prefers-color-scheme:light){
  :root{--bg:#F6F1E3; --bg2:#EFE8D6; --fg:#1B1814; --fg2:#4E483F; --fg3:#7A7365;
    --acento:#D92700; --acento-t:#FFF8F0; --card:rgba(255,255,255,.5); --card2:rgba(255,255,255,.85); --line:rgba(27,24,20,.12);
    --nav:rgba(246,241,227,.82)}
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--fg);font:16px/1.6 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:hidden;min-height:100vh}
img,svg{display:block;max-width:100%}
a{color:inherit}
:focus-visible{outline:2px solid var(--acento);outline-offset:3px;border-radius:6px}
.salto{position:absolute;left:-999px;top:8px;background:var(--fg);color:var(--bg);padding:10px 16px;border-radius:10px;z-index:100}
.salto:focus{left:8px}
.envase{width:min(1120px,100% - 40px);margin-inline:auto}
.rotulo{font:500 11px/1.4 var(--mono);letter-spacing:.18em;text-transform:uppercase;color:var(--fg3)}
h1,h2,h3{font-family:var(--serif);font-weight:500;letter-spacing:-.02em;line-height:1.08}
h1{font-size:clamp(34px,5.6vw,62px)}
h2{font-size:clamp(26px,3.6vw,42px);margin:.3em 0 0}
h3{font-family:var(--sans);font-size:17px;letter-spacing:-.01em;line-height:1.3}
h1 em,h2 em{font-style:normal;color:var(--acento)}
.bajada{font-size:clamp(16px,1.6vw,18px);color:var(--fg2);max-width:36em;margin-top:14px}
section{padding:clamp(56px,9vw,104px) 0;position:relative}
.fondo-2{background:var(--bg2)}
.cabeza{margin-bottom:clamp(26px,4vw,44px)}

#progreso{position:fixed;inset:0 0 auto 0;height:2px;z-index:60;transform-origin:0 50%;transform:scaleX(0);background:var(--acento)}
#luz{display:none}

/* navegación */
header.nav{position:sticky;top:0;z-index:50;background:var(--nav);backdrop-filter:saturate(1.4) blur(16px);-webkit-backdrop-filter:saturate(1.4) blur(16px);border-bottom:1px solid var(--line)}
header.nav .envase{display:flex;align-items:center;justify-content:space-between;height:58px}
.marca{display:flex;align-items:center;gap:10px;text-decoration:none;font:600 17px var(--sans);letter-spacing:-.015em}
.marca img{width:30px;height:30px}
.marca span{color:var(--fg3);font-weight:500}
.nav nav{display:flex;align-items:center;gap:2px}
.nav nav a{font-size:14px;color:var(--fg2);text-decoration:none;padding:8px 12px;border-radius:999px;transition:color .2s,background .2s}
.nav nav a:hover{color:var(--fg);background:var(--card2)}
@media (max-width:760px){.nav nav a:not(.btn){display:none}}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:600 15px var(--sans);text-decoration:none;color:var(--acento-t);padding:12px 22px;border-radius:999px;border:1px solid transparent;cursor:pointer;
  background:var(--acento);transition:transform .3s var(--ease),filter .3s}
.btn:hover{transform:translateY(-1px);filter:brightness(1.06)}
.btn.borde{background:transparent;color:var(--fg);border-color:var(--line)}
.btn.borde:hover{background:var(--card2)}
.nav nav a.btn.chico,.nav nav a.btn{padding:8px 16px;font-size:13.5px;color:var(--acento-t);background:var(--acento)}

/* portada */
.portada{padding:clamp(36px,7vw,84px) 0 clamp(40px,6vw,72px);overflow:hidden;isolation:isolate}
.resplandor{position:absolute;inset:-30% -20% auto auto;width:70vw;height:70vw;max-width:900px;max-height:900px;z-index:-1;pointer-events:none;
  background:radial-gradient(closest-side,rgba(255,122,87,.13),rgba(242,184,75,.05) 55%,transparent)}
@media (prefers-color-scheme:light){.resplandor{background:radial-gradient(closest-side,rgba(217,39,0,.07),transparent)}}
.portada .envase{display:grid;grid-template-columns:1fr minmax(0,460px);grid-template-rows:auto auto;column-gap:clamp(32px,6vw,80px);row-gap:0;align-items:end}
.portada .libro-vivo{grid-column:2;grid-row:1/3;align-self:center}
.portada-acciones{grid-column:1;grid-row:2;align-self:start}
@media (max-width:900px){.portada .envase{grid-template-columns:1fr}.portada .libro-vivo,.portada-acciones{grid-column:1;grid-row:auto}.portada-acciones{margin-top:34px}.control-h{margin-bottom:30px}}
@media (max-width:480px){.acciones .btn.borde{display:none}.acciones .btn{width:100%}}
.portada h1{margin:14px 0 0}
.portada h1 em{white-space:nowrap}
.control-h{margin:26px 0 24px;max-width:440px}
.control-fila{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:10px}
.control-fila output{font:600 15px var(--mono);color:var(--fg)}
.acciones{display:flex;gap:10px;flex-wrap:wrap}
.dato{margin-top:16px;font-size:13.5px;color:var(--fg3)}

input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:4px;border-radius:99px;background:linear-gradient(90deg,var(--acento) var(--pct,10%),var(--line) var(--pct,10%));outline-offset:10px;cursor:pointer}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:24px;height:24px;border-radius:50%;background:var(--fg);border:0;box-shadow:0 0 0 5px rgba(255,122,87,.22),0 2px 8px rgba(0,0,0,.35);cursor:grab}
input[type=range]::-moz-range-thumb{width:24px;height:24px;border-radius:50%;background:var(--fg);border:0;box-shadow:0 0 0 5px rgba(255,122,87,.22);cursor:grab}
.marcas{display:flex;justify-content:space-between;font:500 11px var(--mono);color:var(--fg3);margin-top:10px}

/* la página que se acorta */
.libro-vivo{position:relative;width:100%;max-width:460px;justify-self:center}
.pila{position:relative;width:calc(100% - 24px)}
.hojas{position:absolute;inset:0;pointer-events:none}
.hojas i{position:absolute;inset:0;border-radius:6px 14px 14px 6px;background:#E6DFD0;box-shadow:0 1px 0 rgba(0,0,0,.08);transition:transform .7s var(--ease),opacity .5s}
.hojas i:nth-child(1){transform:translate(calc(var(--g,1)*3px),calc(var(--g,1)*3px));opacity:.9}
.hojas i:nth-child(2){transform:translate(calc(var(--g,1)*6px),calc(var(--g,1)*6px));opacity:.7}
.hojas i:nth-child(3){transform:translate(calc(var(--g,1)*9px),calc(var(--g,1)*9px));opacity:.5}
.hojas i:nth-child(4){transform:translate(calc(var(--g,1)*12px),calc(var(--g,1)*12px));opacity:.3}
.hoja{position:relative;background:var(--papel);color:var(--tinta);border-radius:6px 14px 14px 6px;padding:22px 24px 18px;
  box-shadow:inset 6px 0 10px -6px rgba(0,0,0,.25),0 30px 60px -30px rgba(0,0,0,.65)}
@media (prefers-color-scheme:light){.hoja{background:#FFFDF8;box-shadow:0 0 0 1px rgba(27,24,20,.1),0 30px 60px -34px rgba(27,24,20,.45)}.hojas i{background:#E9E1CF}}
.hoja-cab{display:flex;justify-content:space-between;gap:12px;font:500 10px var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--tinta2);padding-bottom:12px;border-bottom:1px solid rgba(27,24,20,.12)}
.texto-libro{font:400 clamp(15px,1.5vw,16.5px)/1.62 var(--serif);margin:14px 0 16px;min-height:12.5em;hyphens:auto;text-wrap:pretty}
.texto-libro span{transition:color .5s,opacity .5s,background-size .6s var(--ease);background:linear-gradient(rgba(255,122,87,.28),rgba(255,122,87,.28)) no-repeat 0 92%/0% .38em}
.texto-libro span.fuera{color:rgba(27,24,20,.22)}
.texto-libro span.dentro{background-size:100% .38em}
.libro-vivo[data-nivel="4"] .texto-libro span.dentro{background-size:0% .38em}
.hoja-pie{display:flex;justify-content:space-between;align-items:center;gap:12px}
.hoja-pie b{display:block;font:600 19px/1.1 var(--serif)}
.hoja-pie small{display:block;font-size:13px;color:var(--tinta2);margin-top:2px}
.hoja .chip{font:600 13px var(--mono);background:var(--tinta);color:var(--papel);padding:7px 12px;border-radius:99px;white-space:nowrap}
.medidor{height:3px;border-radius:9px;background:rgba(27,24,20,.1);margin-top:14px;overflow:hidden}
.medidor i{display:block;height:100%;width:var(--pc,10%);background:#D92700;border-radius:9px;transition:width .7s var(--ease)}
.selector-v{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin-top:40px}
.selector-v button{font:600 13px var(--sans);color:var(--fg2);background:transparent;border:1px solid var(--line);border-radius:12px;padding:9px 4px 8px;cursor:pointer;transition:background .25s,color .25s,border-color .25s}
.selector-v button small{display:block;font:500 10.5px var(--mono);color:var(--fg3);margin-top:1px}
.selector-v button:hover{color:var(--fg);background:var(--card2)}
.selector-v button.on{color:var(--fg);border-color:var(--acento);background:rgba(255,122,87,.1)}
.selector-v button.on small{color:var(--acento)}
@media (max-width:420px){.hoja{padding:18px 18px 16px}.selector-v button{font-size:12px}}

/* cinta de títulos */
.cinta{overflow:hidden;border-block:1px solid var(--line);padding:14px 0;mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent);-webkit-mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent)}
.cinta div{display:flex;gap:34px;width:max-content;animation:corre 60s linear infinite;font:400 clamp(16px,2vw,20px) var(--serif);color:var(--fg3);white-space:nowrap}
.cinta span::after{content:"·";margin-left:34px;color:var(--acento)}
@keyframes corre{to{transform:translateX(-50%)}}

/* aparece al hacer scroll */
.rev{opacity:0;transform:translateY(18px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.rev.vis{opacity:1;transform:none}

.tarjeta{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px}
.tarjeta h3{margin-bottom:6px}
.tarjeta p{color:var(--fg2);font-size:15px;line-height:1.55}

/* cómo funciona */
.pasos{display:grid;grid-template-columns:minmax(0,320px) 1fr;gap:clamp(40px,7vw,96px);align-items:start}
.pasos .fijo{position:sticky;top:90px;display:grid;place-items:center}
.lista-pasos{list-style:none;display:grid}
.paso{display:grid;grid-template-columns:44px 1fr;gap:6px 14px;padding:24px 0;border-top:1px solid var(--line);opacity:.45;transition:opacity .5s}
.paso:last-child{border-bottom:1px solid var(--line)}
.paso.on{opacity:1}
.paso .num{font:500 13px/1.9 var(--mono);color:var(--acento)}
.paso h3{font:600 clamp(19px,2.2vw,24px)/1.2 var(--serif);margin-bottom:6px}
.paso p{color:var(--fg2);max-width:32em;font-size:15.5px}
@media (min-width:901px){.lista-pasos .paso{min-height:34vh;align-content:center}}
@media (max-width:900px){.pasos{grid-template-columns:1fr}.pasos .fijo{display:none}.paso{opacity:1;padding:18px 0}}

.telefono{position:relative;width:min(280px,100%);aspect-ratio:9/18.5;border-radius:40px;padding:9px;background:#26231F;box-shadow:0 0 0 1px rgba(243,238,227,.1),0 40px 70px -30px rgba(0,0,0,.8)}
.telefono::after{content:"";position:absolute;top:17px;left:50%;width:70px;height:20px;margin-left:-35px;border-radius:99px;background:#000;z-index:5}
.pantalla{position:relative;height:100%;border-radius:32px;overflow:hidden;background:#12110F;isolation:isolate}
.capa{position:absolute;inset:0;padding:52px 14px 16px;opacity:0;transform:translateY(10px);transition:opacity .5s,transform .6s var(--ease);display:flex;flex-direction:column;gap:10px;color:#F3EEE3}
.capa.sepia{background:#F1E7D0;color:#3B2F22}
.pasos[data-paso="1"] .s1,.pasos[data-paso="2"] .s2,.pasos[data-paso="3"] .s3{opacity:1;transform:none}
.capa .t{font:500 10px var(--mono);letter-spacing:.14em;text-transform:uppercase;opacity:.6}
.mini-reel{flex:1;border-radius:18px;background:linear-gradient(170deg,#2A2520 10%,#5A2A1C 70%,#B8462A);display:flex;align-items:flex-end;padding:16px}
.mini-reel b{font:600 19px/1.25 var(--serif)}
.opc{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:12px 14px;border-radius:12px;background:rgba(243,238,227,.07);border:1px solid rgba(243,238,227,.1);font-size:13px;font-weight:600}
.opc small{font:500 11px var(--mono);opacity:.7;white-space:nowrap}
.opc.sel{border-color:#FF7A57;background:rgba(255,122,87,.14)}
.sepia .opc{background:rgba(59,47,34,.07);border-color:rgba(59,47,34,.14)}
.lector{font:400 20px/1.5 var(--serif);color:rgba(59,47,34,.3)}
.lector span{transition:color .25s}
.lector span.dicho{color:#3B2F22}
.lineas i{display:block;height:7px;border-radius:9px;background:rgba(59,47,34,.12);margin:9px 0}

/* cada libro */
.grilla-libro{display:grid;grid-template-columns:1.05fr 1fr;gap:18px;align-items:start}
@media (max-width:900px){.grilla-libro{grid-template-columns:1fr}}
.versiones .titulo{font:600 21px/1.2 var(--serif)}
.versiones .autor{color:var(--fg3);font-size:14px;margin-bottom:10px}
.versiones ul{list-style:none}
.versiones li{display:grid;grid-template-columns:86px 1fr 52px;align-items:center;gap:12px;padding:12px 0;border-top:1px solid var(--line);font-size:14.5px;font-weight:600}
.versiones li i{height:4px;border-radius:9px;background:linear-gradient(90deg,var(--acento) var(--w),var(--line) var(--w))}
.versiones li small{font:500 12px var(--mono);color:var(--fg3);text-align:right}
.extras{display:grid;gap:12px}

/* colección */
.estante{display:flex;gap:14px;overflow-x:auto;padding:4px 0 24px;padding-inline:max(20px,calc((100vw - 1120px)/2));scroll-padding-inline:20px;scroll-snap-type:x proximity;scrollbar-width:none}
.estante::-webkit-scrollbar{display:none}
.tapa{flex:0 0 clamp(124px,15vw,156px);aspect-ratio:2/3;border-radius:4px 10px 10px 4px;padding:14px 12px;display:flex;flex-direction:column;justify-content:space-between;scroll-snap-align:start;
  box-shadow:inset 5px 0 0 rgba(0,0,0,.14),0 18px 30px -18px rgba(0,0,0,.6);transition:transform .4s var(--ease)}
.tapa:hover{transform:translateY(-4px)}
.tapa b{font:600 15px/1.15 var(--serif)}
.tapa small{font:500 9px var(--mono);letter-spacing:.13em;text-transform:uppercase;opacity:.75}
.t1{background:#F3EEE3;color:#1B1814;outline:1px solid rgba(27,24,20,.1);outline-offset:-1px}
.t2{background:#2A2622;color:#F3EEE3}
.t3{background:#C9573A;color:#FFF5EC}
.t4{background:#D1C8B8;color:#1B1814}
.t5{background:#3B4A3F;color:#F3EEE3}
.t6{background:#E9B65A;color:#1B1814}

/* proyecto */
.mision{display:grid;grid-template-columns:1fr 1.2fr;gap:clamp(20px,6vw,80px);align-items:start}
.mision .bajada{margin-top:0}
@media (max-width:900px){.mision{grid-template-columns:1fr}}
.cifras{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:28px}
.cifras div{border-top:1px solid var(--line);padding-top:14px}
.cifras dt{font:600 clamp(26px,3vw,34px)/1 var(--serif)}
.cifras dd{color:var(--fg3);font-size:13.5px;margin-top:6px;line-height:1.4}

/* preguntas */
.faq{max-width:820px}
details{border-top:1px solid var(--line)}
details:last-child{border-bottom:1px solid var(--line)}
summary{list-style:none;cursor:pointer;padding:17px 36px 17px 0;font-weight:600;font-size:16px;position:relative}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";position:absolute;right:4px;top:50%;margin-top:-14px;font:400 24px/28px var(--sans);color:var(--acento);transition:transform .3s var(--ease)}
details[open] summary::after{transform:rotate(45deg)}
details p{color:var(--fg2);padding:0 0 18px;max-width:46em;font-size:15.5px}
details a{color:var(--acento)}

/* cierre */
.cierre{text-align:center;overflow:hidden;isolation:isolate;border-top:1px solid var(--line)}
.cierre .resplandor{inset:auto auto -40% 50%;transform:translateX(-50%)}
.cierre h2{font-size:clamp(28px,4.4vw,50px);margin:0 auto 26px;max-width:14em}
.cierre .acciones{justify-content:center}
.desliza{position:relative;margin:26px auto 0;width:min(320px,100%);height:52px;border-radius:999px;background:var(--card);border:1px solid var(--line);overflow:hidden;touch-action:pan-y;user-select:none;-webkit-user-select:none}
.desliza .relleno{position:absolute;inset:0 auto 0 0;width:calc(var(--p,0)*100%);background:linear-gradient(90deg,transparent,rgba(255,122,87,.28))}
.desliza .texto{position:absolute;inset:0;display:grid;place-items:center;font-weight:500;font-size:14px;color:var(--fg2);padding-left:44px;pointer-events:none;transition:color .3s}
.desliza.listo .texto{color:var(--acento)}
.desliza .perilla{position:absolute;left:4px;top:4px;width:42px;height:42px;border-radius:50%;border:0;cursor:grab;display:grid;place-items:center;color:var(--acento-t);background:var(--acento);
  transform:translateX(calc(var(--p,0)*(var(--max,260px))));transition:transform .45s var(--ease)}
.desliza.arrastra .perilla{transition:none;cursor:grabbing}
.perilla svg{width:18px;height:18px}

/* pie */
footer.pie{border-top:1px solid var(--line);padding:48px 0 32px;font-size:14px;color:var(--fg2);background:var(--bg2)}
.pie-grilla{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:28px}
.pie-grilla>div:first-child p{margin-top:12px;max-width:24em;color:var(--fg3)}
@media (max-width:900px){.pie-grilla{grid-template-columns:1fr 1fr}.pie-grilla>div:first-child,.pie-grilla>div:last-child{grid-column:1/-1}.pie-grilla>div:last-child ul{grid-template-columns:1fr 1fr;column-gap:16px}}
@media (max-width:420px){.pie-grilla{gap:26px 16px}.pie-grilla>div:last-child ul{grid-template-columns:1fr}}
.pie h4{font:500 11px var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--fg3);margin-bottom:12px}
.pie ul{list-style:none;display:grid;gap:8px}
.pie a{text-decoration:none}.pie a:hover{color:var(--fg);text-decoration:underline}
.pie .bajo{margin-top:36px;padding-top:20px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:8px 14px;flex-wrap:wrap;color:var(--fg3);font-size:12.5px}

/* páginas legales */
.legal{padding:48px 0 88px}
.legal .contenido{max-width:720px}
.legal h1{font-size:clamp(30px,4.6vw,48px);margin:12px 0 8px}
.legal .fecha{color:var(--fg3);font-size:14px;margin-bottom:30px}
.legal h2{font-size:clamp(21px,2.6vw,26px);margin:1.8em 0 .5em}
.legal h3{font-size:17px;margin:1.4em 0 .4em}
.legal p,.legal li{color:var(--fg2);margin-bottom:.9em}
.legal ul,.legal ol{padding-left:1.3em;margin-bottom:1em}
.legal a{color:var(--acento)}
.legal table{width:100%;border-collapse:collapse;margin:1em 0 1.6em;font-size:14.5px;display:block;overflow-x:auto}
.legal th,.legal td{border-bottom:1px solid var(--line);padding:10px;text-align:left;vertical-align:top;color:var(--fg2);min-width:140px}
.legal th{font:500 11px var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--fg3)}
.aviso{border:1px solid var(--line);background:var(--card);border-radius:14px;padding:14px 16px;font-size:14.5px;color:var(--fg2);margin:1.4em 0}

/* movimiento reducido */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
  .rev{opacity:1;transform:none}
  .cinta div{animation:none}
}