/* El Libro de las Opciones - sitio estático */
@font-face{font-family:"Fraunces";font-style:normal;font-weight:500 900;font-display:swap;src:url(../fonts/fraunces.woff2) format("woff2")}
@font-face{font-family:"Fraunces";font-style:italic;font-weight:500 700;font-display:swap;src:url(../fonts/fraunces-italic.woff2) format("woff2")}
@font-face{font-family:"Inter";font-style:normal;font-weight:400 700;font-display:swap;src:url(../fonts/inter.woff2) format("woff2")}
:root{
  --navy:#091B33;
  --blue:#16345A;
  --signal:#F5B700;
  --white:#FFFFFF;
  --paper:#F7F4EC;
  --ink:#091B33;
  --ink-soft:#16345A;
  --line:rgba(9,27,51,.14);
  --line-dark:var(--sep-dark);
  --serif:"Fraunces", Georgia, "Times New Roman", serif;
  --sans:"Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --r:12px;      /* único radio de contenedores; los controles van en píldora */
  --r-sm:var(--r);
  --shadow-ink:rgba(3,11,24,.6); /* sombras teñidas de navy, nunca negro puro */
  /* Dos elevaciones: baja (elementos abiertos o elevados) y media (paneles flotantes) */
  --elev-1:0 8px 24px -12px rgba(9,27,51,.35);
  --elev-2:0 24px 48px -24px rgba(9,27,51,.45);
  /* Texto y líneas sobre navy: tres niveles de texto, un separador, un borde de control, un relleno */
  --on-dark-1:#FFFFFF;
  --on-dark-2:rgba(255,255,255,.72);
  --on-dark-3:rgba(255,255,255,.55);
  --sep-dark:rgba(255,255,255,.12);
  --ctl-dark:rgba(255,255,255,.4);
  --fill-dark:rgba(255,255,255,.06);
  --gutter:16px;
  --nav-h:60px;
  /* Curvas de movimiento (Emil Kowalski) */
  --ease-out:cubic-bezier(0.23,1,0.32,1);
  --ease-in-out:cubic-bezier(0.77,0,0.175,1);
  --ease-drawer:cubic-bezier(0.32,0.72,0,1);
  --ease:var(--ease-out);
}
@media (min-width:720px){:root{--gutter:32px;--nav-h:68px}}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 12px);-webkit-text-size-adjust:100%}
body{margin:0;background:var(--white);color:var(--ink);font:400 17px/1.6 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--blue);text-decoration-thickness:1px;text-underline-offset:.22em}
::selection{background:var(--signal);color:var(--navy)}
html{scrollbar-color:var(--blue) var(--paper);caret-color:var(--blue)}
/* Iconos: Phosphor (bold), licencia MIT */
.ico{width:16px;height:16px;flex:none;fill:currentColor}
h1,h2,h3{margin:0;line-height:1.12;letter-spacing:-.01em}
h2{font:700 clamp(28px,6vw,46px)/1.08 var(--serif);margin-bottom:16px;text-wrap:balance}
h3{font:600 17px/1.3 var(--sans)}
p{margin:0 0 14px;text-wrap:pretty}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.wrap{width:100%;max-width:1160px;margin:0 auto;padding:0 var(--gutter)}
.narrow>*{max-width:720px} /* columna de lectura, alineada al mismo borde izquierdo que el resto */
.nowrap{white-space:nowrap}
.muted{color:var(--ink-soft);font-size:15px}
.skip{position:absolute;left:-999px;top:8px;background:var(--signal);color:var(--navy);padding:12px 18px;border-radius:999px;z-index:100}
.skip:focus{left:8px}
:focus-visible{outline:3px solid var(--signal);outline-offset:3px}


/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:50px;padding:0 24px;border-radius:999px;font:600 17px/1 var(--sans);text-decoration:none;border:2px solid transparent;transition:transform 160ms var(--ease-out),background-color 200ms ease,border-color 200ms ease,color 200ms ease;cursor:pointer;-webkit-tap-highlight-color:transparent}
.btn:active{transform:scale(.97)}
.btn--accent{background:var(--signal);color:var(--navy)}
.btn--ghost{color:var(--white);border-color:var(--ctl-dark)}
.btn--outline{color:var(--white);border-color:var(--ctl-dark)}
.btn--sm{min-height:44px;padding:0 18px;font-size:15px}
@media (hover:hover) and (pointer:fine){
  .btn--accent:hover{filter:brightness(.95)}
  .btn--ghost:hover{border-color:var(--white)}
  .btn--outline:hover{background:var(--white);color:var(--navy)}
  .nav__links a:hover{color:var(--white)}
  .icon-btn:not(:disabled):hover{border-color:var(--white);background:var(--fill-dark)}
}

/* Nav */
.nav{position:sticky;top:0;z-index:50;height:var(--nav-h);background:rgba(9,27,51,.92);backdrop-filter:saturate(1.4) blur(10px);-webkit-backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line-dark)}
.nav__in{height:100%;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:10px;color:var(--white);text-decoration:none;font:700 17px/1 var(--serif)}
.brand__mark{width:16px;height:22px;fill:var(--white);flex:none}
.nav__links{display:none;gap:28px}
.nav__end{display:flex;align-items:center;gap:12px}
.lang{display:flex;padding:3px;border:1px solid var(--ctl-dark);border-radius:999px}
.lang a{position:relative;display:grid;place-items:center;min-width:40px;height:30px;padding:0 8px;border-radius:999px;color:var(--on-dark-2);font:600 13px/1 var(--sans);text-decoration:none;transition:background-color 200ms ease,color 200ms ease}
.lang a[aria-current]{background:var(--white);color:var(--navy)}
/* Área táctil de 44 px de alto sin cambiar el aspecto del selector */
.lang a::before{content:"";position:absolute;inset:-7px 0}
@media (hover:hover) and (pointer:fine){.lang a:not([aria-current]):hover{color:var(--white)}}
@media (max-width:479px){.nav__buy{display:none}}
.nav__links a{color:var(--on-dark-2);text-decoration:none;font-size:15px;font-weight:500;transition:color 200ms ease}
@media (min-width:900px){.nav__links{display:flex}}
@media (max-width:380px){.brand span{font-size:15px}}

/* Hero */
.hero{position:relative;background:var(--navy);color:var(--white);overflow:hidden}
/* Fondo en dos planos: video del mercado (atrás, más lento) y contenido (adelante) */
.has-plane{position:relative;overflow:hidden;isolation:isolate}
.has-plane>:not(.plane){position:relative;z-index:1}
.plane{position:absolute;inset:-30% 0;z-index:0;pointer-events:none;will-change:transform}
.plane__video{width:100%;height:100%;object-fit:cover;opacity:.22;display:block}
.plane::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,var(--navy) 0%,rgba(9,27,51,.55) 30%,rgba(9,27,51,.55) 70%,var(--navy) 100%)}
.hero .plane::after{background:linear-gradient(90deg,rgba(9,27,51,.92) 0%,rgba(9,27,51,.6) 55%,rgba(9,27,51,.35) 100%),linear-gradient(180deg,rgba(9,27,51,0) 70%,var(--navy) 100%)}
.hero--flip .plane::after{background:linear-gradient(270deg,rgba(9,27,51,.92) 0%,rgba(9,27,51,.6) 55%,rgba(9,27,51,.35) 100%),linear-gradient(180deg,rgba(9,27,51,0) 70%,var(--navy) 100%)}
@media (max-width:899px){.hero .plane::after{background:linear-gradient(180deg,rgba(9,27,51,.85) 0%,rgba(9,27,51,.7) 60%,var(--navy) 100%)}}
.hero__in{position:relative;display:grid;gap:40px;padding-top:48px;padding-bottom:64px;align-items:center}
.hero h1{font:700 clamp(40px,8vw,64px)/1.08 var(--serif);letter-spacing:-.02em;margin-bottom:20px;text-wrap:balance}
.hero__eyebrow{display:block;font:600 15px/1.3 var(--sans);letter-spacing:0;color:var(--on-dark-2);margin-bottom:14px}
.hero__lead{color:var(--on-dark-2);font-size:17px;max-width:34em;margin-bottom:28px}
.hero__cta{display:flex;flex-wrap:wrap;gap:12px}
.hero__cta .btn{flex:1 1 auto}
.hero__book{justify-self:center;width:min(92vw,420px)}
.hero__book img{width:100%;height:auto;filter:drop-shadow(0 24px 32px var(--shadow-ink))}
@media (min-width:560px){.hero__cta .btn{flex:0 0 auto}}
/* Móvil: título, mockup completo y después el texto y los botones */
@media (max-width:959px){
  .hero__in{padding-top:28px;gap:0}
  .hero__copy{display:contents}
  .hero h1{order:1;margin-bottom:8px}
  .hero__book{order:3;margin:0 auto 20px}
  .hero__lead{order:4}
  .hero__cta{order:5}
}
@media (min-width:960px){
  .hero__in{grid-template-columns:1.05fr .95fr;gap:40px;padding-top:72px;padding-bottom:88px}
  .hero__book{width:min(100%,540px)}
  .hero--flip .hero__in{grid-template-columns:.95fr 1.05fr}
  .hero--flip .hero__book{order:-1}
}

/* Sections */
.section{padding:72px 0}
@media (min-width:900px){.section{padding:112px 0}}
.paper{background:var(--paper)}
.dark{background:var(--navy);color:var(--white)}
.dark h2{color:var(--white)}
.head{margin-bottom:36px;max-width:720px}
.head__lead{color:var(--ink-soft);font-size:20px;line-height:1.5;margin:0}
.dark .head__lead{color:var(--on-dark-2)}
.prose p{font-size:17px;color:var(--ink-soft);max-width:62ch}
.prose strong{color:var(--ink)}
.quote{position:relative;font:italic 600 22px/1.45 var(--serif);margin:28px 0;padding-left:0;color:var(--ink);text-wrap:pretty}
.quote::before{content:"";display:block;width:40px;height:1px;background:var(--ink);opacity:.35;margin-bottom:14px}

/* Pillars */
.pillars{list-style:none;padding:0;margin:40px 0 0;display:grid;gap:28px}
.pillars li{border-left:2px solid var(--navy);padding:2px 0 2px 20px}
.pillars h3{font:700 20px/1.25 var(--serif);margin-bottom:6px}
.pillars p{margin:0;color:var(--ink-soft);font-size:17px}
@media (min-width:720px){.pillars li{display:grid;grid-template-columns:240px 1fr;gap:24px;align-items:baseline}.pillars h3{margin:0}}

/* Blocks / modules */
.blocks{display:grid;gap:14px}
.block{border:1px solid var(--line);border-radius:var(--r);background:var(--white);overflow:hidden;transition:box-shadow 240ms ease}
.block[open]{box-shadow:var(--elev-1)}
.block summary{list-style:none;cursor:pointer;display:grid;grid-template-columns:1fr auto;grid-template-areas:"tag icon" "title icon" "range icon";padding:20px 22px;gap:2px 16px;align-items:center}
.block summary::-webkit-details-marker{display:none}
.block[open] .mods{animation:open-in 260ms var(--ease-out)}
@keyframes open-in{from{opacity:0;transform:translateY(-4px)}}
.block summary::after{content:"";grid-area:icon;width:12px;height:12px;border-right:2px solid var(--navy);border-bottom:2px solid var(--navy);transform:rotate(45deg) translateY(-3px);transition:transform 240ms var(--ease-out)}
.block[open] summary::after{transform:rotate(-135deg) translateY(-3px)}
.block__tag{grid-area:tag;font:600 13px/1.4 var(--sans);color:var(--blue)}
.block__title{grid-area:title;font:700 clamp(22px,4.6vw,28px)/1.15 var(--serif)}
.block__range{grid-area:range;font-size:15px;color:var(--ink-soft)}
.mods{list-style:none;counter-reset:m;margin:0;padding:0 22px 10px;display:grid}
.mods li{counter-increment:m;position:relative;padding:16px 0 16px 56px;border-top:1px solid var(--line)}
.mods[start="4"]{counter-reset:m 3}.mods[start="10"]{counter-reset:m 9}
.mods li::before{content:counter(m,decimal-leading-zero);position:absolute;left:0;top:14px;font:700 22px/1 var(--serif);color:var(--navy);opacity:.28}
.mods h3{font-size:17px;margin-bottom:4px}
.mods p{margin:0;font-size:15px;color:var(--ink-soft)}
@media (min-width:900px){.mods{grid-template-columns:1fr 1fr;column-gap:40px}.mods li:nth-child(2){border-top:1px solid var(--line)}}

/* Gallery */
.gallery{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px var(--gutter) 8px;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.gallery::-webkit-scrollbar{display:none}
@media (min-width:1160px){.gallery{padding-left:calc((100vw - 1160px)/2 + var(--gutter));padding-right:calc((100vw - 1160px)/2 + var(--gutter));scroll-padding:0 calc((100vw - 1160px)/2 + var(--gutter))}}
.slide{flex:0 0 86%;max-width:640px;margin:0;scroll-snap-align:start;background:var(--white);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column}
.slide img{width:100%;height:auto;aspect-ratio:4/3;object-fit:contain;background:var(--white);padding:24px}
.slide figcaption{padding:16px 18px 20px;color:var(--ink-soft);font-size:15px;line-height:1.5;border-top:1px solid var(--line)}
.slide b{display:block;color:var(--blue);font-size:13px;font-weight:600;margin-bottom:6px}
@media (min-width:720px){.slide{flex-basis:520px}}
.gallery__ctrl{display:flex;align-items:center;justify-content:center;gap:18px;margin-top:22px}
.gallery__count{font-variant-numeric:tabular-nums;color:var(--on-dark-2);font-size:15px;min-width:52px;text-align:center}
.icon-btn{width:48px;height:48px;display:grid;place-items:center;border-radius:50%;border:1px solid var(--ctl-dark);background:transparent;color:var(--white);cursor:pointer;transition:background-color 200ms ease,border-color 200ms ease,transform 160ms var(--ease-out),opacity 200ms ease}
.icon-btn:active:not(:disabled){transform:scale(.96)}
.icon-btn:disabled{opacity:.3;cursor:default}

/* Split + checklist */
.split{display:grid;gap:36px;align-items:start}
@media (min-width:960px){.split{grid-template-columns:1fr 1fr;gap:64px}.split__text{position:sticky;top:calc(var(--nav-h) + 40px)}}
.split__text>p{color:var(--ink-soft);max-width:62ch}
.check{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:22px;box-shadow:var(--elev-2)}
.check__head{display:flex;justify-content:space-between;align-items:baseline;font:700 20px/1.2 var(--serif);margin-bottom:12px}
.check__score{font:600 15px/1 var(--sans);color:var(--ink-soft);font-variant-numeric:tabular-nums}
.check__score b{display:inline-block;font:700 22px/1 var(--serif);color:var(--navy)}

.check__bar{height:6px;border-radius:999px;background:var(--paper);overflow:hidden;margin-bottom:10px;position:relative}
.check__bar::after{content:"";position:absolute;left:62.5%;top:0;bottom:0;width:2px;background:var(--line)}
.check__bar i{display:block;height:100%;width:100%;background:var(--navy);border-radius:999px;transform:scaleX(0);transform-origin:left;transition:transform 260ms var(--ease-out),background-color 200ms ease}

.check label{display:flex;gap:14px;align-items:flex-start;padding:13px 4px;border-bottom:1px solid var(--line);cursor:pointer;font-size:17px;line-height:1.45}
.check label:last-of-type{border-bottom:0}
.check input{appearance:none;-webkit-appearance:none;flex:none;width:24px;height:24px;margin:0;border:2px solid var(--blue);border-radius:6px;display:grid;place-content:center;cursor:pointer;transition:background-color 160ms ease,border-color 160ms ease,transform 160ms var(--ease-out)}
.check input:active{transform:scale(.96)}
.check input::after{content:"";width:6px;height:11px;border:solid var(--white);border-width:0 2.5px 2.5px 0;transform:rotate(45deg) translate(-1px,-1px) scale(.6);opacity:0;transition:transform 180ms var(--ease-out),opacity 120ms ease}
.check input:checked{background:var(--navy);border-color:var(--navy)}
.check input:checked::after{transform:rotate(45deg) translate(-1px,-1px) scale(1);opacity:1}
.check input:checked+span{color:var(--ink-soft)}
.check span{transition:color 200ms ease}
.check__verdict{margin:14px 0 6px;padding:14px 16px;border-radius:var(--r-sm);background:var(--paper);font-weight:600;font-size:15px;transition:background-color 200ms ease,color 200ms ease}
.check.is-low .check__verdict{background:var(--white);color:var(--blue);box-shadow:inset 0 0 0 1px var(--blue)}
.check.is-ok .check__verdict{background:var(--navy);color:var(--white)}
.link-btn{background:none;border:0;padding:0;min-height:44px;color:var(--blue);font:500 15px var(--sans);text-decoration:underline;cursor:pointer}

/* Rules */
.rules{margin:0}
.rule{display:grid;gap:6px;padding:22px 0}
.rule+.rule{border-top:1px solid var(--line)}
.dark .rule+.rule{border-top-color:var(--line-dark)}
.dark .rule dd{color:var(--on-dark-2)}
.dark .rule__mod{color:var(--on-dark-3)}
.rule dt{display:flex;align-items:baseline;justify-content:space-between;gap:16px}
.rule__name{font:700 22px/1.2 var(--serif)}
.rule__mod{flex:none;font:500 13px/1 var(--sans);color:var(--ink-soft);font-variant-numeric:tabular-nums}
.rule dd{margin:0;color:var(--ink-soft);max-width:60ch}
@media (min-width:900px){.rule{grid-template-columns:minmax(260px,1fr) 2fr;gap:40px;align-items:baseline;padding:26px 0}.rule dt{flex-direction:column;align-items:flex-start;gap:8px}}

/* Timeline */
.timeline{list-style:none;margin:28px 0 8px;padding:0;position:relative}
.timeline::before{content:"";position:absolute;left:7px;top:10px;bottom:10px;width:2px;background:var(--line)}
.timeline li{position:relative;padding:0 0 22px 36px}
.timeline li::before{content:"";position:absolute;left:0;top:6px;width:16px;height:16px;border-radius:50%;background:var(--paper);border:3px solid var(--navy)}
.timeline li:last-child::before{background:var(--navy)}
.timeline span{display:block;font:700 20px/1.3 var(--serif);margin-bottom:2px;font-variant-numeric:tabular-nums}
.timeline p{margin:0;color:var(--ink-soft)}

/* Author */
.author{display:grid;gap:24px;align-items:start}
.author__photo{display:block;width:128px;height:128px;border-radius:50%;overflow:hidden;background:var(--navy);box-shadow:var(--elev-1)}
.author__photo img{width:100%;height:100%;object-fit:cover}
@media (min-width:720px){.author__photo{width:160px;height:160px}}
.author p{color:var(--ink-soft);font-size:17px}
.author p.muted{font-size:13px}
@media (min-width:720px){.author{grid-template-columns:auto 1fr;gap:40px}}

/* Editions */
.editions{display:grid;gap:18px;max-width:980px}
.edition{display:grid;grid-template-columns:110px 1fr;gap:18px;align-items:center;background:var(--blue);border:1px solid var(--line-dark);border-radius:var(--r);padding:18px}
.edition img{border-radius:2px 6px 6px 2px;box-shadow:0 16px 30px -12px var(--shadow-ink)}
.edition h3{font:700 22px/1.15 var(--serif);color:var(--white);margin:6px 0 4px}
.edition p{color:var(--on-dark-2);font-size:15px;margin-bottom:6px}
.edition .edition__fmt{font-size:13px;color:var(--on-dark-3);margin-bottom:14px}
.edition__tag{font:600 13px/1 var(--sans);color:var(--on-dark-2)}
.edition .btn{width:100%}
@media (max-width:420px){.edition{grid-template-columns:1fr;text-align:center}.edition img{width:150px;margin:0 auto}}
@media (min-width:860px){.editions{grid-template-columns:1fr 1fr}.edition{grid-template-columns:150px 1fr;padding:24px}.edition .btn{width:auto}}

/* FAQ */
.faq{margin-top:24px;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;padding:20px 40px 20px 0;font:600 17px/1.4 var(--sans);position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before,.faq summary::after{content:"";position:absolute;right:6px;top:50%;width:14px;height:2px;margin-top:-1px;border-radius:2px;background:var(--blue);transition:transform 240ms var(--ease-out)}
.faq summary::after{transform:rotate(90deg)}
.faq details[open] summary::after{transform:rotate(180deg)}
.faq details[open] p{animation:open-in 240ms var(--ease-out)}
.faq details p{color:var(--ink-soft);padding-right:24px;margin-bottom:20px;max-width:62ch}

/* Footer */
.foot{background:var(--navy);color:var(--on-dark-3);padding:48px 0 calc(96px + env(safe-area-inset-bottom));border-top:1px solid var(--line-dark)}
@media (min-width:900px){.foot{padding-bottom:48px}}
.foot__in{display:grid;gap:14px}
.brand--foot{margin-bottom:6px}
.foot__legal{font-size:13px;line-height:1.6;max-width:760px}
.foot__copy{font-size:13px;margin:0}

/* Sticky mobile buy */
.sticky-buy{position:fixed;left:var(--gutter);right:var(--gutter);bottom:calc(14px + env(safe-area-inset-bottom));z-index:40;display:flex;align-items:center;justify-content:center;gap:10px;min-height:52px;border-radius:999px;background:var(--signal);color:var(--navy);font-weight:700;text-decoration:none;box-shadow:var(--elev-2);transform:translateY(calc(100% + 24px));transition:transform 200ms var(--ease-out)}
.sticky-buy.is-on{transform:none;transition:transform 320ms var(--ease-drawer)}
.sticky-buy:active{transform:scale(.97)}
@media (min-width:900px){.sticky-buy{display:none}}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  @keyframes open-in{from{opacity:0}}
  .btn:active,.icon-btn:active:not(:disabled),.check input:active,.sticky-buy:active{transform:none}
  .sticky-buy,.sticky-buy.is-on{transition:opacity 200ms ease}
  .sticky-buy{transform:none;opacity:0;pointer-events:none}
  .sticky-buy.is-on{opacity:1;pointer-events:auto}
}

/* 404 */
.notfound{min-height:100dvh;display:grid;align-items:center;padding:48px 0}
.notfound h1{font-size:clamp(36px,8vw,64px)}

/* Acordeones: abren y cierran con el mismo fundido (navegadores con ::details-content); los demás conservan la entrada con keyframes */
@supports selector(::details-content){
  .block[open] .mods,.faq details[open] p{animation:none}
  .block::details-content,.faq details::details-content{opacity:0;transition:opacity 220ms var(--ease-out),content-visibility 220ms allow-discrete}
  .block[open]::details-content,.faq details[open]::details-content{opacity:1}
}

@media (prefers-reduced-motion:reduce){
  .block::details-content,.faq details::details-content{transition-duration:0s}
}