:root{
  --amarillo:#F5C132;
  --gris:#565656;
  --gris-oscuro:#2c2c2c;
  --tinta:#1d2426;
  --papel:#fffdf7;
  --papel-2:#f4f1e8;
  --teal:#0b3e49;
  --teal-2:#143f49;
  --aqua:#79d7d3;
  --aqua-suave:#dff6f4;
  --linea:rgba(86,86,86,.18);
  --sombra:0 24px 80px rgba(8,24,31,.18);
  --radio:28px;
  --max:1180px;
  --sans:"Myriad Pro",Inter,"Helvetica Neue",Arial,sans-serif;
  --condensed:"Myriad Pro Condensed","Arial Narrow","Roboto Condensed","Myriad Pro",Inter,"Helvetica Neue",Arial,sans-serif;
  --reading:"Myriad Pro",Inter,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--papel);color:var(--tinta);font-family:var(--sans);line-height:1.55;text-rendering:optimizeLegibility}
a{color:inherit;text-decoration:none}
a:hover{text-decoration:underline;text-decoration-thickness:.08em;text-underline-offset:.2em}
img{max-width:100%;height:auto;display:block}
button,input,textarea,select{font:inherit}
.skip-link{position:absolute;top:-100px;left:20px;background:var(--amarillo);color:#111;padding:10px 14px;z-index:1000;border-radius:999px}.skip-link:focus{top:18px}
.site-header{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:16px clamp(18px,4vw,58px);background:rgba(255,253,247,.88);backdrop-filter:blur(18px);border-bottom:1px solid var(--linea)}
.brand{display:flex;align-items:center;gap:12px}.brand img{width:206px;height:auto;object-fit:contain}
.site-nav{display:flex;align-items:center;gap:6px;font-family:var(--condensed);font-weight:800;letter-spacing:.06em;text-transform:uppercase;font-size:.84rem}.site-nav a,.site-nav button{padding:10px 12px;border:0;border-radius:999px;background:transparent;color:inherit;font:inherit;font-weight:inherit;letter-spacing:inherit;text-transform:inherit;cursor:pointer}.site-nav a:hover,.site-nav button:hover{background:rgba(245,193,50,.18);text-decoration:none}.download-link{background:var(--gris-oscuro)!important;color:#fff!important}.site-nav .download-link:hover{background:#111!important;color:#fff!important}.download-button{cursor:pointer;border:0;font:inherit}.download-button[aria-busy="true"]{opacity:.72;pointer-events:none}.download-status{position:fixed;left:50%;bottom:24px;z-index:120;transform:translateX(-50%);max-width:min(92vw,560px);padding:12px 16px;border-radius:18px;background:#242424;color:#fff;box-shadow:var(--sombra);font-weight:750}.nav-toggle{display:none;border:1px solid var(--linea);background:#fff;padding:10px 14px;border-radius:999px;font-weight:800;text-transform:uppercase;letter-spacing:.06em}
.site-nav .nav-ai-link{display:inline-flex;align-items:center;gap:6px;background:var(--teal);color:#fff;box-shadow:0 6px 18px rgba(11,62,73,.16)}.site-nav .nav-ai-link span{color:var(--amarillo);font-size:1.05em}.site-nav .nav-ai-link:hover{background:#116878;color:#fff}.site-nav .nav-ai-link:focus-visible{outline:3px solid var(--amarillo);outline-offset:2px}
.progress{position:fixed;top:0;left:0;width:100%;height:4px;z-index:80;background:transparent}.progress span{display:block;width:0%;height:100%;background:var(--amarillo)}
.hero{position:relative;overflow:hidden;min-height:calc(100vh - 80px);background:linear-gradient(105deg,rgba(255,253,250,.99) 0%,rgba(255,253,250,.96) 50%,rgba(238,249,249,.78) 100%);color:var(--teal);padding:clamp(44px,7vw,92px) clamp(18px,4vw,58px);display:grid;align-items:center}
.hero::before{content:"";position:absolute;pointer-events:none;width:min(78vw,980px);aspect-ratio:1;right:-18vw;bottom:-48%;border-radius:47% 53% 44% 56%;background:repeating-radial-gradient(ellipse at 52% 48%,transparent 0 12px,rgba(39,171,190,.11) 13px 14px),radial-gradient(ellipse at 46% 50%,rgba(121,215,211,.2),rgba(121,215,211,.07) 58%,transparent 59%);border:2px solid rgba(24,175,201,.68);transform:rotate(-11deg)}
.hero-grid{position:relative;z-index:1;width:100%;max-width:var(--max);margin:auto;display:block}
.hero-grid>div{max-width:890px}.eyebrow{font-family:var(--condensed);font-size:.92rem;font-weight:900;letter-spacing:.18em;text-transform:uppercase;color:#d7237b;margin:0 0 18px}.hero h1{font-family:var(--condensed);font-size:clamp(4rem,12vw,9.5rem);line-height:.78;letter-spacing:-.07em;margin:0 0 24px;text-transform:uppercase}.hero .ellipsis{color:#12a8ba}.subtitle{font-family:var(--reading);font-size:clamp(1.18rem,2vw,1.8rem);line-height:1.45;color:#244c55;max-width:820px;margin:0 0 34px}.hero-actions{display:flex;flex-wrap:wrap;gap:12px}.btn{font:inherit;appearance:none;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 18px;border-radius:999px;border:1px solid rgba(11,62,73,.25);font:inherit;font-weight:850;letter-spacing:.02em;cursor:pointer}.btn-primary{background:var(--amarillo);color:#141414;border-color:var(--amarillo)}.btn-secondary{background:rgba(255,255,255,.72);color:var(--teal)}.btn:hover{text-decoration:none;transform:translateY(-1px)}button.btn{appearance:none;-webkit-appearance:none}
.btn-reader-ai{position:relative;isolation:isolate;overflow:hidden;background:linear-gradient(115deg,var(--teal) 0%,#116878 100%);color:#fff;border-color:transparent;box-shadow:0 10px 28px rgba(11,62,73,.2);transition:transform .2s ease,box-shadow .2s ease}.btn-reader-ai::before{content:"";position:absolute;z-index:-1;inset:0;background:linear-gradient(115deg,#116878 0%,#0b3e49 100%);opacity:0;transition:opacity .2s ease}.btn-reader-ai:hover{box-shadow:0 14px 34px rgba(11,62,73,.28)}.btn-reader-ai:hover::before{opacity:1}.btn-reader-ai__icon{width:20px;height:20px;flex:0 0 auto;color:var(--amarillo)}.btn-reader-ai__badge{margin-left:2px;padding:3px 7px;border-radius:999px;background:var(--amarillo);color:#141414;font-size:.67rem;font-weight:950;line-height:1;letter-spacing:.08em}.btn-reader-ai:focus-visible{outline:3px solid var(--amarillo);outline-offset:3px}
.cover-card{position:relative;padding:14px;border-radius:34px;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.18);box-shadow:var(--sombra)}.cover-card img{border-radius:24px;box-shadow:0 22px 70px rgba(0,0,0,.32)}.cover-note{position:absolute;left:-28px;bottom:28px;background:var(--papel);color:var(--gris-oscuro);padding:16px 18px;border-radius:22px;max-width:245px;box-shadow:var(--sombra);font-size:.93rem}.cover-note strong{font-family:var(--condensed);font-size:1.25rem;text-transform:uppercase;letter-spacing:.05em;color:var(--teal)}
.section{padding:clamp(58px,8vw,110px) clamp(18px,4vw,58px)}.section-inner{max-width:var(--max);margin:auto}.section-kicker{font-family:var(--condensed);font-weight:900;letter-spacing:.16em;text-transform:uppercase;color:var(--teal);margin:0 0 10px}.section h2{font-family:var(--condensed);font-size:clamp(2.3rem,5.5vw,5.3rem);letter-spacing:-.05em;line-height:.9;margin:0 0 22px;color:var(--gris-oscuro)}.section-lead{font-family:var(--reading);font-size:clamp(1.08rem,1.7vw,1.42rem);max-width:860px;color:#354144;margin:0 0 32px}.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:38px 0 0}.metric{padding:22px;border:1px solid var(--linea);border-radius:24px;background:#fff}.metric b{display:block;font-family:var(--condensed);font-size:2.7rem;line-height:.9;color:var(--teal)}.metric span{color:var(--gris);font-weight:700}.concept-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:36px}.concept{position:relative;overflow:hidden;padding:28px;border-radius:28px;background:#fff;border:1px solid var(--linea);box-shadow:0 16px 50px rgba(11,62,73,.06)}.concept::before{content:"";position:absolute;right:-24px;top:-24px;width:90px;height:90px;border-radius:50%;background:var(--amarillo);opacity:.14}.concept h3{font-family:var(--condensed);font-size:1.65rem;margin:0 0 12px;color:var(--teal)}.concept p{margin:0;color:#465256}.band{background:linear-gradient(135deg,#f3efe2,#ffffff)}
.toc-controls{display:flex;gap:12px;align-items:center;margin:28px 0}.toc-controls input{width:min(100%,520px);padding:14px 16px;border:1px solid var(--linea);border-radius:999px;font:inherit;background:#fff}.toc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.toc-card{display:flex;flex-direction:column;min-height:268px;padding:24px;border:1px solid var(--linea);border-radius:28px;background:#fff;box-shadow:0 14px 48px rgba(11,62,73,.05)}.toc-card:hover{text-decoration:none;transform:translateY(-3px);box-shadow:0 18px 64px rgba(11,62,73,.1)}.toc-meta{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:18px;color:var(--gris);font-weight:850;font-size:.82rem;text-transform:uppercase;letter-spacing:.08em}.toc-num{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:50%;background:var(--amarillo);color:#111;font-family:var(--condensed);font-size:1.2rem}.toc-card h3{font-family:var(--condensed);font-size:1.55rem;line-height:1.05;letter-spacing:-.02em;color:var(--teal);margin:0 0 14px}.toc-card p{color:#4c5659;margin:0 0 18px}.toc-author{margin-top:auto;padding-top:14px;border-top:1px solid var(--linea);font-weight:800;color:var(--gris-oscuro)}
.reader-shell{display:grid;grid-template-columns:minmax(240px,310px) minmax(0,1fr);gap:clamp(24px,4vw,60px);max-width:1380px;margin:0 auto;padding:38px clamp(18px,4vw,58px) 92px}.reader-aside{position:sticky;top:98px;align-self:start;max-height:calc(100vh - 120px);overflow:auto;border:1px solid var(--linea);border-radius:28px;background:#fff;padding:18px;box-shadow:0 12px 42px rgba(11,62,73,.06)}.reader-aside h2{font-family:var(--condensed);font-size:1.5rem;margin:0 0 14px;color:var(--teal)}.reader-aside input{width:100%;padding:12px 14px;border:1px solid var(--linea);border-radius:999px;margin-bottom:14px}.side-list{display:grid;gap:4px}.side-list a{display:block;padding:10px 12px;border-radius:14px;color:#465256;font-weight:750;font-size:.92rem}.side-list a.active,.side-list a:hover{background:rgba(245,193,50,.22);text-decoration:none;color:#111}.reader-main{min-width:0}.reader-intro{background:linear-gradient(135deg,var(--teal),#082a31);color:#fff;border-radius:36px;padding:clamp(30px,5vw,64px);margin-bottom:36px;overflow:hidden;position:relative}.reader-intro::after{content:"";position:absolute;right:-120px;bottom:-170px;width:420px;height:420px;border:1px solid rgba(121,215,211,.35);border-radius:44% 56% 58% 42%;transform:rotate(16deg)}.reader-intro h1{font-family:var(--condensed);font-size:clamp(2.8rem,7vw,7rem);letter-spacing:-.06em;line-height:.82;margin:0 0 20px}.reader-intro p{font-family:var(--reading);font-size:1.25rem;max-width:820px;color:rgba(255,255,255,.86)}.article-section{background:#fff;border:1px solid var(--linea);border-radius:36px;margin:0 0 36px;padding:clamp(28px,5vw,68px);box-shadow:0 18px 70px rgba(11,62,73,.06);scroll-margin-top:100px}.article-label{display:flex;flex-wrap:wrap;gap:10px;align-items:center;font-size:.82rem;text-transform:uppercase;letter-spacing:.12em;font-weight:900;color:var(--gris);margin-bottom:20px}.article-label .chip{border:1px solid var(--linea);border-radius:999px;padding:6px 10px;background:var(--papel)}.article-title{font-family:var(--condensed);font-size:clamp(2.1rem,4.8vw,4.7rem);line-height:.92;letter-spacing:-.045em;color:var(--teal);margin:0 0 18px}.article-author{font-weight:850;color:var(--gris-oscuro);margin:0 0 34px}.article-body{font-family:var(--reading);font-size:1.075rem;line-height:1.78;color:#222}.article-body h2,.article-body h3{font-family:var(--condensed);line-height:1.05;color:var(--teal);letter-spacing:-.025em}.article-body h2{font-size:clamp(1.7rem,3vw,2.7rem);margin:42px 0 14px}.article-body h3{font-size:1.6rem;margin:30px 0 12px}.article-body p{margin:0 0 1.08em}.article-body .keywords{font-family:var(--sans);background:rgba(245,193,50,.16);border-left:5px solid var(--amarillo);padding:14px 18px;border-radius:14px}.article-body .ref,.article-body .reference{font-size:.95rem;line-height:1.5}.article-body .small,.article-body .caption,.article-body .table-note{font-family:var(--sans);font-size:.9rem;color:#596366}.article-body blockquote{font-size:1.25rem;border-left:5px solid var(--amarillo);margin:30px 0;padding:10px 0 10px 24px;color:#2d3638}.article-body ul,.article-body ol{padding-left:1.3em}.article-body li{margin-bottom:.5em}.article-nav{display:flex;justify-content:space-between;gap:12px;margin-top:34px;border-top:1px solid var(--linea);padding-top:18px}.article-nav a{font-weight:850;color:var(--teal)}.table-wrap{width:100%;overflow-x:auto;margin:22px 0;border:1px solid var(--linea);border-radius:18px}.table-wrap table{width:100%;border-collapse:collapse;font-family:var(--sans);font-size:.9rem}.table-wrap th,.table-wrap td{border-bottom:1px solid var(--linea);padding:10px;text-align:left;vertical-align:top}.table-wrap th{background:var(--aqua-suave);font-weight:900}.chapter-figure{margin:28px 0}.chapter-figure img{border-radius:24px;border:1px solid var(--linea);box-shadow:0 16px 60px rgba(0,0,0,.08)}.chapter-figure figcaption{font-family:var(--sans);font-size:.88rem;color:var(--gris);margin-top:10px}.authors-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:34px}.author-card{background:#fff;border:1px solid var(--linea);border-radius:28px;padding:26px;box-shadow:0 12px 50px rgba(11,62,73,.05)}.author-card h3{font-family:var(--condensed);font-size:1.7rem;line-height:1;margin:0 0 14px;color:var(--teal)}.author-card p{margin:0;color:#3f4b4e}.legal-card{max-width:860px;background:#fff;border:1px solid var(--linea);border-radius:32px;padding:clamp(28px,5vw,62px);box-shadow:var(--sombra)}.legal-card p{font-family:var(--reading);font-size:1.08rem}.site-footer{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;padding:42px clamp(18px,4vw,58px);background:#242424;color:#fff}.site-footer strong{font-family:var(--condensed);font-size:1.9rem}.site-footer p{margin:.2em 0;color:rgba(255,255,255,.75)}.tiny{font-size:.88rem}.integration{border-left:7px solid var(--amarillo);padding:24px 26px;background:#fff;border-radius:22px;margin-top:30px}.integration code{background:var(--papel-2);padding:.15em .35em;border-radius:6px}
@media(max-width:980px){.hero-grid,.reader-shell{grid-template-columns:1fr}.site-footer{grid-template-columns:1fr;text-align:center}.site-footer .footer-title{white-space:normal}.footer-editorial{justify-self:center}.cover-note{position:static;margin-top:12px}.metrics,.concept-grid,.toc-grid,.authors-grid{grid-template-columns:1fr 1fr}.reader-aside{position:relative;top:auto;max-height:none}.site-nav{position:absolute;right:18px;top:70px;display:none;flex-direction:column;align-items:stretch;background:#fff;border:1px solid var(--linea);border-radius:24px;box-shadow:var(--sombra);padding:12px;min-width:260px}.site-nav.open{display:flex}.nav-toggle{display:inline-flex}.brand img{width:176px}}
@media(max-width:640px){.metrics,.concept-grid,.toc-grid,.authors-grid{grid-template-columns:1fr}.hero h1{font-size:4rem}.section h2{font-size:2.7rem}.article-title{font-size:2.3rem}.article-section{border-radius:24px}.reader-intro{border-radius:24px}.article-nav{flex-direction:column}.brand img{width:154px}}
@media print{.site-header,.progress,.reader-aside,.article-nav,.site-footer,.toc-controls,.nav-toggle,.skip-link,button[data-copy-link]{display:none!important}body{background:#fff;color:#111;-webkit-print-color-adjust:exact;print-color-adjust:exact}.reader-intro{display:block!important;page-break-after:always;min-height:260mm;border-radius:0;margin:0;padding:70pt 52pt;background:#0b3e49!important;color:#fff}.reader-intro h1{color:#fff!important;font-size:56pt;line-height:.86}.reader-intro p{color:#fff!important;font-size:18pt}.reader-shell{display:block;padding:0;max-width:none}.article-section{box-shadow:none;border:0;border-radius:0;page-break-after:always;padding:0;margin:0 0 30px}.article-title{color:#111;font-size:32pt}.article-body{font-size:11pt;line-height:1.45}.article-body h2{color:#111;font-size:19pt}.article-body h3{color:#111;font-size:15pt}.chapter-figure img{max-height:230mm;object-fit:contain}.table-wrap{overflow:visible}.site-footer{display:none}}

strong.concepto-propio{font-weight:900;color:inherit;text-transform:none;}

/* Controles de descarga sin navegacion: se comportan como botones, no como enlaces. */
button.btn,
button.download-link,
button.download-button{
  font: inherit;
  appearance: none;
  -webkit-appearance: none;
}

/* Footer editorial */
.site-footer{grid-template-columns:minmax(0,1fr) auto;gap:clamp(30px,5vw,72px);align-items:center;padding:46px clamp(18px,4vw,58px)}
.site-footer .footer-title{margin:0;color:rgba(255,255,255,.82);font-family:var(--reading);font-size:clamp(.84rem,1.18vw,1.12rem);line-height:1.4;white-space:nowrap}
.site-footer .footer-title strong{font-family:var(--condensed);font-size:1.35em;color:#fff}
.footer-editorial{display:block;padding:8px;border-radius:12px}
.footer-editorial:hover{background:rgba(255,255,255,.06)}
.footer-editorial img{width:clamp(230px,24vw,360px);height:auto;filter:invert(1);opacity:.9}
@media(max-width:980px){
  .site-footer{grid-template-columns:1fr;text-align:center}
  .site-footer .footer-title{white-space:normal}
  .footer-editorial{justify-self:center}
}