/* =====================================================================
   BOOK DETAIL PAGE — single-book template (refresh)
   Visual system: TITONET (navy + amber, Merriweather/Inter, monospace
   metadata), pero en una versión más editorial / “publishing site”:
   - portada flotando con sombra (sin frame-corners)
   - tarjetas de “Disponible en” como wordmarks
   - cita lateral, meta vertical con iconos, índice como lista simple
   - rejilla de “más libros” a 4 columnas
   ===================================================================== */

/* -- Page wrap fondos suaves ------------------------------------------ */
.bd-page-soft{
  background:
    linear-gradient(180deg, var(--paper) 0%, var(--paper) 380px, var(--bg) 380px, var(--bg) 100%);
}

/* -- Hero -------------------------------------------------------------- */
.bd-hero{
  padding: 24px 0 44px;
}
.bd-hero-grid{
  display: grid;
  grid-template-columns: 0.95fr 1.25fr 0.85fr;
  gap: 56px;
  align-items: start;
}

/* -- Cover column ------------------------------------------------------ */
.bd-cover-wrap{
  position: relative;
  padding: 12px 16px 28px;
}
.bd-cover-frame{
  position: relative;
  display: flex; align-items: flex-end; justify-content: center;
  aspect-ratio: 3/4;
}
.bd-cover-frame::after{
  /* sombra-suelo bajo el libro (no “estante” gráfico, solo sombra suave) */
  content: "";
  position: absolute;
  left: 10%; right: 10%;
  bottom: -10px;
  height: 18px;
  background: radial-gradient(50% 100% at 50% 0%, rgba(11,29,58,.22) 0%, rgba(11,29,58,0) 70%);
  z-index: 0;
}
.bd-cover-frame img{
  position: relative; z-index: 1;
  display: block;
  height: 100%;
  width: auto;
  max-width: 100%;
  object-fit: contain;
  box-shadow:
    -3px 0 0 rgba(11,29,58,.22),
    0 22px 38px -8px rgba(11,29,58,.28),
    0 8px 14px rgba(11,29,58,.14);
}

/* -- Title / lede / meta column --------------------------------------- */
.bd-text{
  display: flex; flex-direction: column;
  padding-top: 6px;
}
.bd-eyebrow{
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--sans);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--amber-2);
  margin-bottom: 18px;
}
.bd-title{
  font-family: var(--serif);
  font-weight: 400;
  font-size: 58px;
  line-height: 1.02;
  letter-spacing: -.018em;
  color: var(--navy);
  margin: 0 0 14px;
  text-wrap: pretty;
}
.bd-title em{ font-style: italic; color: var(--navy-3); font-weight: 400; }
.bd-subtitle{
  font-family: var(--serif);
  font-style: normal;
  font-weight: 400;
  font-size: 22px;
  line-height: 1.32;
  color: var(--ink);
  margin: 0 0 22px;
  max-width: 520px;
  letter-spacing: -.005em;
}
.bd-lede{
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.62;
  color: var(--ink-2);
  margin: 0 0 36px;
  max-width: 520px;
}
.bd-lede strong{ color: var(--ink); font-weight: 600; }

/* meta: 3 items con icono encima, valor en serif y label en caps */
.bd-meta{
  display: grid;
  grid-template-columns: repeat(3, max-content);
  gap: 64px;
  align-items: start;
  max-width: 520px;
}
.bd-meta > div{
  display: flex; flex-direction: column; align-items: flex-start; gap: 10px;
}
.bd-meta-ic{
  width: 24px; height: 24px;
  color: var(--amber-2);
  display:flex; align-items:center; justify-content:flex-start;
}
.bd-meta-ic svg{ width: 24px; height: 24px; }
.bd-meta-val{
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1;
  color: var(--navy);
  letter-spacing: -.01em;
  font-weight: 400;
}
.bd-meta-val.is-text{
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -.005em;
  line-height: 1.15;
}
.bd-meta-lbl{
  font-family: var(--sans);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--muted);
  line-height: 1.35;
  margin-top: -2px;
}

/* -- Buy column -------------------------------------------------------- */
.bd-buy{
  display: flex; flex-direction: column; gap: 12px;
  padding: 18px 18px 18px;
  background: var(--paper);
  border: 1px solid var(--rule);
  position: relative;
}
.bd-buy-head{
  display: flex; align-items: baseline; justify-content: space-between;
  padding: 4px 4px 12px;
}
.bd-buy-head h3{
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: none;
  color: var(--ink-2);
  margin: 0;
}
.bd-buy-head .mono{
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--muted);
  letter-spacing: .04em;
}

.bd-buy-row{
  display: grid;
  grid-template-columns: 1fr 28px;
  gap: 12px;
  align-items: center;
  padding: 14px 16px;
  background: #fff;
  border: 1px solid var(--rule);
  color: var(--ink);
  transition: border-color .15s ease, transform .15s ease, box-shadow .15s ease;
}
.bd-buy-row:hover{
  border-color: var(--navy);
  transform: translateY(-1px);
  box-shadow: 0 6px 14px -6px rgba(11,29,58,.18);
}

/* Retailer wordmark — texto estilizado (sin recrear logos) */
.bd-buy-wordmark{
  display: inline-flex; align-items: baseline; gap: 6px;
  font-family: var(--sans);
  color: var(--navy);
  letter-spacing: -.01em;
}
.bd-buy-wordmark .wm-text{
  font-weight: 700;
  font-size: 17px;
}
.bd-buy-wordmark .wm-text.lowercase{ text-transform: lowercase; font-weight: 800; letter-spacing: -.015em; }
.bd-buy-wordmark .wm-italic{
  font-family: var(--serif); font-style: italic;
  font-size: 18px; font-weight: 400;
  color: var(--navy);
}
.bd-buy-wordmark .wm-script{
  font-family: var(--serif); font-style: italic;
  font-size: 18px; font-weight: 400;
  color: var(--amber-2);
  letter-spacing: -.02em;
}
.bd-buy-wordmark .wm-square{
  display: inline-grid; place-items:center;
  width: 18px; height: 18px;
  background: var(--ink-block); color: var(--on-ink);
  font-family: var(--serif); font-weight: 400; font-size: 11px;
  margin-right: 2px;
}
.bd-buy-wordmark .wm-tag{
  font-family: var(--sans);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--muted);
  text-transform: lowercase;
  padding-left: 8px;
  border-left: 1px solid var(--rule);
  margin-left: 4px;
}

.bd-buy-arrow{
  display:inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px;
  background: transparent;
  border: 1px solid var(--rule);
  color: var(--navy);
  transition: background .15s ease, border-color .15s ease, color .15s ease;
}
.bd-buy-arrow svg{ width: 14px; height: 14px; }
.bd-buy-row:hover .bd-buy-arrow{
  background: var(--ink-block);
  border-color: var(--navy);
  color: var(--on-ink);
}

/* Canales de activación (venta directa): flecha en botón amarillo */
.bd-buy-row.is-activation .bd-buy-arrow{
  background: var(--insight);
  border-color: var(--insight);
  color: var(--on-amber);
}
.bd-buy-row.is-activation:hover .bd-buy-arrow{
  background: var(--insight-2);
  border-color: var(--insight-2);
  color: var(--on-amber);
}

.bd-buy-foot{
  font-family: var(--sans);
  font-size: 12.5px;
  color: var(--ink-2);
  padding: 4px 4px 0;
}
.bd-buy-foot strong{ color: var(--navy); font-weight: 600; }

/* -- Quote card under buy ---------------------------------------------- */
.bd-quote{
  margin-top: 14px;
  padding: 22px 22px 20px;
  background: var(--azul-claro);
  position: relative;
}
.bd-quote-mark{
  font-family: var(--serif);
  font-size: 30px;
  line-height: .6;
  color: var(--navy);
  margin: 0 0 12px;
  font-style: italic;
  opacity: .8;
}
.bd-quote-text{
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.55;
  color: var(--navy);
  margin: 0 0 16px;
  letter-spacing: -.003em;
}
.bd-quote-author{
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--sans);
  font-size: 12.5px;
  font-weight: 500;
  color: var(--navy-3);
}
.bd-quote-author::before{
  content: "—";
  color: var(--navy-3);
  font-family: var(--serif);
}

/* -- Body grid: about + image ----------------------------------------- */
.bd-section{
  padding: 48px 0 0;
}
.bd-section.first{ padding-top: 36px; }
.bd-section + .bd-section{ padding-top: 44px; }
.bd-section-title{
  font-family: var(--serif);
  font-weight: 400;
  font-size: 26px;
  line-height: 1.15;
  letter-spacing: -.005em;
  color: var(--navy-3);
  margin: 0 0 18px;
}
.bd-section-title em{ font-style: italic; color: var(--navy-3); }

.bd-about-grid{
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 48px;
  align-items: start;
}
.bd-about-body{ display:flex; flex-direction: column; gap: 0; }
.bd-about-body p{
  font-family: var(--sans);
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ink-2);
  margin: 0 0 16px;
  max-width: 520px;
}
.bd-about-body p strong{ color: var(--navy); font-weight: 600; }
.bd-about-body p em{ font-family: var(--serif); font-style: italic; color: var(--navy); }
.bd-about-body p:last-child{ margin-bottom: 0; }

/* placeholder de imagen: estilo arquitectura / fachada de cristal */
.bd-about-image{
  position: relative;
  aspect-ratio: 16/10;
  overflow: hidden;
  background:
    linear-gradient(180deg, #BCC9DA 0%, #6E89AE 50%, #1C2E4F 100%);
}
.bd-about-image .bd-glass{
  position: absolute; inset: 0;
  background-image:
    /* mullions verticales finos */
    linear-gradient(90deg, rgba(11,29,58,.18) 1px, transparent 1px),
    /* mullions horizontales */
    linear-gradient(0deg, rgba(11,29,58,.18) 1px, transparent 1px),
    /* reflejos diagonales */
    linear-gradient(115deg, rgba(255,255,255,.18) 0 20%, rgba(255,255,255,0) 22% 100%),
    linear-gradient(115deg, rgba(255,255,255,.10) 30% 36%, rgba(255,255,255,0) 38% 100%);
  background-size: 48px 100%, 100% 36px, 100% 100%, 100% 100%;
}
.bd-about-image .bd-glass-2{
  position:absolute; inset:0;
  background:
    radial-gradient(80% 60% at 50% 30%, rgba(255,255,255,.15), rgba(255,255,255,0) 60%),
    radial-gradient(60% 50% at 100% 0%, rgba(255,255,255,.18), rgba(255,255,255,0) 70%);
  mix-blend-mode: screen;
}
.bd-about-image .bd-image-tag{
  position: absolute;
  bottom: 16px; left: 16px;
  display: inline-flex; align-items: center; gap: 8px;
  z-index: 3;
}
.bd-about-image .bd-image-tag .type{
  font-family: var(--sans);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  background: rgba(250,250,248,.92);
  color: var(--azul-marino);
  padding: 5px 9px;
}
.bd-about-image .bd-image-tag .cap{
  font-family: var(--mono);
  font-size: 10.5px;
  color: rgba(250,250,248,.92);
  background: rgba(11,29,58,.55);
  padding: 4px 8px;
}

/* -- Ideas + Contenido grid ------------------------------------------- */
.bd-twocol{
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 48px;
  align-items: start;
}
.bd-ideas{ display:flex; flex-direction: column; gap: 0; max-width: 520px; }
.bd-idea{
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 14px;
  align-items: start;
  padding: 10px 0;
}
.bd-idea + .bd-idea{ border-top: 1px solid var(--rule); }
.bd-idea-ic{
  width: 28px; height: 28px;
  display: grid; place-items: center;
  border: 1px solid var(--rule-2);
  border-radius: 50%;
  color: var(--navy-3);
  background: transparent;
  margin-top: 2px;
}
.bd-idea-ic svg{ width: 16px; height: 16px; }
.bd-idea-body{
  display: flex; flex-direction: column; gap: 4px;
}
.bd-idea-title{
  font-family: var(--sans);
  font-weight: 600;
  font-size: 14px;
  line-height: 1.4;
  color: var(--navy);
  margin: 0;
  letter-spacing: -.005em;
}
.bd-idea-desc{
  font-family: var(--sans);
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--ink-2);
  margin: 0;
}

/* Contenido (TOC) — lista numerada simple, sin card */
.bd-toc{
  padding: 0;
  background: transparent;
  border: 0;
}
.bd-toc-list{
  list-style: none;
  padding: 0;
  margin: 0;
}
.bd-toc-list li{
  display: grid;
  grid-template-columns: 32px 1fr auto;
  gap: 14px;
  align-items: baseline;
  padding: 10px 4px;
  border-bottom: 1px solid var(--rule-2);
  font-family: var(--sans);
  font-size: 14px;
  color: var(--ink);
  transition: padding .15s ease, color .15s ease;
}
.bd-toc-list li:first-child{ border-top: 1px solid var(--rule-2); }
.bd-toc-list li:hover{ color: var(--navy); padding-left: 8px; }
.bd-toc-list li:hover .bd-toc-num{ color: var(--navy); }
.bd-toc-num{
  font-family: var(--sans);
  font-size: 13.5px;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: -.005em;
}
.bd-toc-num::after{ content: "."; }
.bd-toc-title{
  font-weight: 500;
  letter-spacing: -.005em;
  color: var(--ink);
}
.bd-toc-pages{
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--muted);
  letter-spacing: .02em;
}

.bd-toc-foot{
  display:flex; align-items: center; justify-content: space-between;
  padding-top: 16px;
  margin-top: 4px;
  font-family: var(--sans);
  font-size: 12.5px;
  color: var(--ink-2);
}
.bd-toc-foot a{
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 600;
  color: var(--navy);
  border-bottom: 1.5px solid var(--amber-2);
  padding-bottom: 3px;
}
.bd-toc-foot a:hover{ color: var(--navy-2); }

/* -- More books -------------------------------------------------------- */
.bd-more-head{
  display:flex; align-items: end; justify-content: space-between;
  margin-bottom: 22px;
}
.bd-more-head h2{ margin: 0; }
.bd-more-head .bd-more-link{
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 600;
  color: var(--navy);
}
.bd-more-grid{
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px;
}

/* simpler "more" card variant — flat, no frame corners */
.bd-more-card{
  display: flex; flex-direction: column;
  background: transparent;
  border: 0;
}
.bd-more-card .cover{
  aspect-ratio: 3/4;
  background: var(--bg-soft);
  display:flex; align-items:flex-end; justify-content:center;
  padding: 18px 14px 0;
  position: relative;
  overflow: hidden;
}
.bd-more-card .cover img{
  display:block;
  height: 100%; width: auto; max-width: 100%;
  object-fit: contain;
  box-shadow:
    -2px 0 0 rgba(11,29,58,.18),
    0 14px 22px -8px rgba(11,29,58,.22),
    0 5px 10px rgba(11,29,58,.1);
}
.bd-more-card .body{
  padding: 18px 0 0;
  display: flex; flex-direction: column; gap: 6px;
}
.bd-more-card .title{
  font-family: var(--serif);
  font-weight: 400;
  font-size: 19px;
  line-height: 1.2;
  letter-spacing: -.005em;
  color: var(--navy);
  margin: 0;
}
.bd-more-card .lede{
  font-family: var(--sans);
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--ink-2);
  margin: 0;
}
.bd-more-card .link{
  display: inline-flex; align-items: center; gap: 8px;
  margin-top: 8px;
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 600;
  color: var(--navy);
  border-bottom: 1.5px solid var(--amber-2);
  padding-bottom: 3px;
  align-self: flex-start;
  transition: gap .2s ease;
}
.bd-more-card .link:hover{ gap: 12px; }
.bd-more-card .link svg{ width: 14px; height: 14px; stroke: var(--navy); fill: none; stroke-width: 1.8; }

/* -- Responsive ------------------------------------------------------- */
/* -- Edición digital (suscripción de pago) ---------------------------- */
.bd-digital-card{
  background: var(--ink-block);
  color: #F2EDE6;
  border-top: 3px solid var(--insight);
  padding: 36px 40px;
  display: grid;
  grid-template-columns: 1.4fr auto;
  align-items: center;
  gap: 40px;
}
.bd-digital-main{ min-width: 0; }
.bd-digital-eyebrow{
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--sans);
  font-size: 11px; font-weight: 700;
  letter-spacing: .18em; text-transform: uppercase;
  color: var(--insight);
  margin-bottom: 14px;
}
.bd-digital-lock{ display: inline-flex; color: var(--insight); }
.bd-digital-lock svg{ width: 15px; height: 15px; stroke: currentColor; stroke-width: 1.6; fill: none; }
.bd-digital-title{
  font-family: var(--serif);
  font-weight: 400;
  font-size: 28px; line-height: 1.18;
  letter-spacing: -.01em;
  color: #fff;
  margin: 0 0 12px;
}
.bd-digital-title em{ font-style: italic; color: var(--insight); }
.bd-digital-lede{
  font-family: var(--sans);
  font-size: 15px; line-height: 1.6;
  color: #D9DEE7;
  margin: 0; max-width: 560px;
}
.bd-digital-lede strong{ color: #fff; font-weight: 600; }
.bd-digital-actions{
  display: flex; flex-direction: column;
  align-items: flex-start; gap: 14px;
  white-space: nowrap;
}
.bd-digital-cta svg{ stroke: var(--on-amber); }
.bd-digital-have{ font-size: 13px; }

@media (max-width: 820px){
  .bd-digital-card{
    grid-template-columns: 1fr;
    gap: 26px;
    padding: 30px 26px;
  }
  .bd-digital-actions{ align-items: stretch; }
  .bd-digital-cta{ justify-content: center; }
}

/* =====================================================================
   LANDING DE CONVERSIÓN — secciones nuevas
   ===================================================================== */

/* -- Tokens locales (verde/rojo solo para “para quién es”) ------------- */
.bd-hero, .bd-band, .bd-audience{
  --ok-bg:#EAF2EC; --ok-rule:#CADACF; --ok-ink:#2E6B4A;
  --no-bg:#F4EEEC; --no-rule:#E0CFCB; --no-ink:#A8483D;
}

/* -- Botones (CTA) ----------------------------------------------------- */
.bd-cta-row{
  display: flex; flex-wrap: wrap; align-items: center; gap: 14px;
  margin-top: 34px;
}
.bd-cta-primary{
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--sans);
  font-size: 15px; font-weight: 600;
  letter-spacing: -.005em;
  padding: 15px 24px;
  background: var(--ink-block);
  color: var(--on-ink);
  border: 1px solid var(--ink-block);
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.bd-cta-primary svg{ width: 18px; height: 18px; stroke: currentColor; fill: none; stroke-width: 1.8; }
.bd-cta-primary:hover{
  transform: translateY(-1px);
  box-shadow: 0 10px 22px -10px rgba(11,29,58,.5);
}
.bd-cta-primary:hover svg{ transform: translateX(3px); transition: transform .15s ease; }

.bd-cta-secondary{
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--sans);
  font-size: 15px; font-weight: 600;
  letter-spacing: -.005em;
  padding: 15px 22px;
  background: transparent;
  color: var(--navy);
  border: 1px solid var(--rule);
  transition: border-color .15s ease, background .15s ease;
}
.bd-cta-secondary:hover{ border-color: var(--navy); background: var(--paper); }
.bd-cta-ic{ display: inline-flex; color: var(--amber-2); }
.bd-cta-ic svg{ width: 18px; height: 18px; }

.bd-cta-outline{
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--sans);
  font-size: 14px; font-weight: 600;
  letter-spacing: -.005em;
  padding: 13px 22px;
  background: var(--paper);
  color: var(--navy);
  border: 1px solid var(--rule);
  transition: border-color .15s ease, gap .2s ease;
}
.bd-cta-outline svg{ width: 17px; height: 17px; stroke: currentColor; fill: none; stroke-width: 1.8; }
.bd-cta-outline:hover{ border-color: var(--navy); gap: 16px; }

.bd-link-arrow{
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--sans);
  font-size: 13.5px; font-weight: 600;
  color: var(--navy);
  border-bottom: 1.5px solid var(--amber-2);
  padding-bottom: 3px;
  transition: gap .2s ease;
}
.bd-link-arrow svg{ width: 15px; height: 15px; stroke: currentColor; fill: none; stroke-width: 1.8; }
.bd-link-arrow:hover{ gap: 13px; }

/* -- Banda de sección genérica ---------------------------------------- */
.bd-band{ padding: 64px 0; border-top: 1px solid var(--rule); }
.bd-band--soft{ background: var(--bg-soft); }
.bd-band .bd-section-title{
  font-size: 30px;
  color: var(--navy);
  letter-spacing: -.01em;
}

/* -- ¿Qué encontrarás? ------------------------------------------------- */
.bd-find-grid{
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 56px;
  align-items: start;
}
.bd-find-intro .bd-section-title{ margin: 0 0 18px; }
.bd-find-intro p{
  font-family: var(--sans);
  font-size: 15px; line-height: 1.66;
  color: var(--ink-2);
  margin: 0; max-width: 420px;
}
.bd-find-list{
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 36px 40px;
}
.bd-find{ display: flex; flex-direction: column; }
.bd-find-ic{
  display: inline-grid; place-items: center;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--azul-claro);
  color: var(--navy);
  margin-bottom: 16px;
}
.bd-find-ic svg{ width: 23px; height: 23px; }
.bd-find-title{
  font-family: var(--serif);
  font-weight: 400; font-size: 19px; line-height: 1.25;
  letter-spacing: -.005em;
  color: var(--navy);
  margin: 0 0 8px;
}
.bd-find-desc{
  font-family: var(--sans);
  font-size: 14px; line-height: 1.58;
  color: var(--ink-2);
  margin: 0;
}

/* -- Vista previa (carrusel) ------------------------------------------ */
.bd-preview-head{
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 24px; margin-bottom: 28px; flex-wrap: wrap;
}
.bd-preview-rail{
  position: relative;
  display: flex; align-items: center; gap: 14px;
  padding: 4px 0;
}
.bd-rail-nav{
  flex: 0 0 auto;
  display: grid; place-items: center;
  width: 46px; height: 46px;
  background: var(--paper);
  border: 1px solid var(--rule);
  color: var(--navy);
  cursor: pointer;
  transition: border-color .15s ease, background .15s ease, color .15s ease;
  z-index: 2;
}
.bd-rail-nav:hover{ border-color: var(--navy); background: var(--ink-block); color: var(--on-ink); }
.bd-rail-nav svg{ width: 20px; height: 20px; }

.bd-preview-track{
  display: flex; gap: 22px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 18px max(24px, calc((100vw - 1120px)/2)) 22px;
  margin: -18px 0 -22px;
  scrollbar-width: none;
}
.bd-preview-track::-webkit-scrollbar{ display: none; }

.bd-page{
  scroll-snap-align: center;
  flex: 0 0 clamp(240px, 30vw, 320px);
  aspect-ratio: 3/4;
  background: #fff;
  border: 1px solid var(--rule);
  box-shadow: 0 18px 34px -16px rgba(11,29,58,.28), 0 6px 12px -8px rgba(11,29,58,.16);
  padding: 30px 28px;
  display: flex; flex-direction: column;
  overflow: hidden;
}
.bd-page-title{
  font-family: var(--serif);
  font-weight: 400; font-size: 16px; line-height: 1.3;
  color: var(--navy);
  margin: 0 0 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--rule-2);
}
.bd-page .ln{
  display: block; height: 6px; border-radius: 1px;
  background: var(--rule-2);
}
.bd-page-text{ display: flex; flex-direction: column; gap: 11px; }
.bd-page-text.dense{ gap: 9px; }
.bd-page-callout{
  display: flex; flex-direction: column; gap: 9px;
  padding: 14px;
  margin: 6px 0;
  border-left: 3px solid var(--insight);
  background: var(--bg-soft);
}
.bd-page-callout .ln{ background: #cfd4dd; }

.bd-page-toc{
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-direction: column; gap: 13px;
}
.bd-page-toc li{
  display: grid; grid-template-columns: 18px 1fr; gap: 12px; align-items: center;
}
.bd-page-toc .n{
  font-family: var(--mono); font-size: 10.5px; color: var(--muted);
}
.bd-page-toc .ln{ height: 6px; }

.bd-page-diagram{
  position: relative; flex: 1;
  display: grid; place-items: center;
}
.bd-page-diagram .bd-node{
  position: absolute; width: 30%; height: 16%;
  border: 1px solid var(--azul-medio); background: var(--azul-claro);
}
.bd-page-diagram .n1{ top: 18%; left: 35%; }
.bd-page-diagram .n2{ top: 52%; left: 12%; }
.bd-page-diagram .n3{ top: 52%; left: 58%; }
.bd-page-diagram .n4{ top: 78%; left: 35%; background: var(--insight); border-color: var(--insight-2); }
.bd-page-diagram svg{ position: absolute; inset: 0; width: 100%; height: 100%; }

.bd-page-chart{ flex: 1; display: flex; flex-direction: column; justify-content: flex-end; }
.bd-page-chart .bd-page-lines{ flex: 1; }
.bd-page-chart svg{ width: 100%; height: 56%; }

.bd-dots{
  display: flex; justify-content: center; gap: 8px;
  margin-top: 26px;
}
.bd-dot{
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--rule);
  transition: background .2s ease, width .2s ease;
}
.bd-dot.is-on{ background: var(--navy); width: 20px; border-radius: 4px; }

/* -- Vista previa con páginas escaneadas reales ----------------------- */
.bd-page--scan{
  aspect-ratio: auto;
  flex: 0 0 clamp(248px, 28vw, 340px);
  padding: 0;
  background: var(--paper);
  overflow: visible;
  box-shadow: none;
  border: none;
}
.bd-scan-frame{
  display: block;
  background: #fff;
  border: 1px solid var(--rule);
  box-shadow: 0 18px 34px -16px rgba(11,29,58,.28), 0 6px 12px -8px rgba(11,29,58,.16);
  overflow: hidden;
}
.bd-scan-frame img{
  display: block;
  width: 100%;
  height: auto;
}
.bd-scan-cap{
  display: flex; flex-direction: column; gap: 3px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--rule);
}
.bd-scan-folio{
  font-family: var(--mono); font-size: 11px;
  letter-spacing: .04em; text-transform: uppercase;
  color: var(--amber-2);
}
.bd-scan-label{
  font-family: var(--serif); font-weight: 400;
  font-size: 15px; line-height: 1.32;
  color: var(--ink);
  text-wrap: pretty;
}

/* -- Reseñas ----------------------------------------------------------- */
.bd-reviews-grid{
  display: grid; grid-template-columns: 0.8fr 1.2fr;
  gap: 56px; align-items: start;
}
.bd-rating-row{
  display: flex; align-items: baseline; gap: 14px;
}
.bd-rating-num{
  font-family: var(--serif);
  font-size: 64px; line-height: 1;
  letter-spacing: -.02em;
  color: var(--navy);
}
.bd-rating-of{
  font-family: var(--sans);
  font-size: 18px; font-weight: 500; color: var(--muted);
}
.bd-rating-base{
  font-family: var(--mono);
  font-size: 12px; color: var(--muted);
  letter-spacing: .01em;
  margin: 16px 0 0;
}
.bd-stars{ display: inline-flex; align-items: center; gap: 3px; color: var(--insight); }
.bd-star{ display: inline-flex; }
.bd-star svg{ width: 22px; height: 22px; }
.bd-rating-row .bd-stars{ transform: translateY(-6px); }

/* Visor de una sola opinión + slider horizontal */
.bd-rev-viewer{
  display: flex; flex-direction: column;
  gap: 24px; min-height: 230px;
}
.bd-quote-stars .bd-stars{ color: var(--insight); }
.bd-quote-stars .bd-star svg{ width: 18px; height: 18px; }

.bd-rev-current{
  margin: 0; display: flex; flex-direction: column;
}
.bd-rev-current.bd-rev-anim{
  animation: bdRevIn .42s cubic-bezier(.2,.7,.2,1);
}
@keyframes bdRevIn{ from{ transform: translateX(16px); } to{ transform: none; } }
.bd-rev-current blockquote{
  font-family: var(--serif);
  font-weight: 400; font-size: 27px; line-height: 1.42;
  letter-spacing: -.01em;
  color: var(--navy);
  margin: 20px 0 18px;
  text-wrap: pretty;
}
.bd-rev-current figcaption{
  font-family: var(--mono);
  font-size: 12px; font-weight: 500;
  letter-spacing: .04em; text-transform: uppercase;
  color: var(--muted);
}

.bd-rev-slider{
  display: flex; flex-direction: column; gap: 14px;
  user-select: none; outline: none;
}
.bd-rev-meta{
  display: flex; align-items: baseline; justify-content: space-between;
}
.bd-rev-count{
  font-family: var(--mono);
  font-size: 13px; font-weight: 600; color: var(--navy);
  letter-spacing: .04em; font-variant-numeric: tabular-nums;
}
.bd-rev-count i{ color: var(--muted); font-style: normal; }
.bd-rev-hint{
  font-family: var(--mono);
  font-size: 10px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--muted);
}
.bd-rev-rail{
  position: relative; width: 100%; height: 22px;
  cursor: pointer; touch-action: none;
}
.bd-rev-rail::before{
  content: ""; position: absolute; top: 50%; left: 0; right: 0;
  height: 1px; transform: translateY(-50%); background: var(--rule);
}
.bd-rev-fill{
  position: absolute; top: 50%; left: 0; height: 1px;
  transform: translateY(-50%); background: var(--insight);
}
.bd-rev-tick{
  position: absolute; top: 50%; transform: translate(-50%,-50%);
  width: 7px; height: 7px; padding: 0;
  background: var(--bg); border: 1px solid var(--rule); cursor: pointer;
  transition: border-color .2s ease, background .2s ease;
}
.bd-rev-tick:hover{ border-color: var(--navy); }
.bd-rev-tick.is-active{ border-color: var(--insight); background: var(--insight); }
.bd-rev-thumb{
  position: absolute; top: 50%; transform: translate(-50%,-50%);
  width: 14px; height: 14px; background: var(--insight);
  box-shadow: 0 0 0 4px var(--bg); pointer-events: none;
}
.bd-rev-slider:focus-visible .bd-rev-thumb{ box-shadow: 0 0 0 4px var(--bg), 0 0 0 5px var(--insight); }
@media (prefers-reduced-motion: reduce){
  .bd-rev-current.bd-rev-anim{ animation: none; }
}
.bd-reviews-cta{ margin-top: 28px; }

/* -- Para quién es / no es --------------------------------------------- */
.bd-audience{ padding: 64px 0; border-top: 1px solid var(--rule); }
.bd-audience-grid{
  display: grid; grid-template-columns: 1fr 1fr; gap: 26px;
  align-items: stretch;
}
.bd-aud{
  position: relative;
  display: flex; flex-direction: column;
  padding: 34px 32px 30px;
  border: 1px solid var(--rule);
}
.bd-aud--yes{ background: var(--ok-bg); border-color: var(--ok-rule); }
.bd-aud--no{ background: var(--no-bg); border-color: var(--no-rule); }
.bd-aud-badge{
  position: absolute; top: 26px; right: 28px;
  display: grid; place-items: center;
  width: 38px; height: 38px; border-radius: 50%;
}
.bd-aud--yes .bd-aud-badge{ background: var(--ok-ink); color: #fff; }
.bd-aud-badge.no{ background: var(--no-ink); color: #fff; }
.bd-aud-badge svg{ width: 20px; height: 20px; }
.bd-aud-title{
  font-family: var(--serif);
  font-weight: 400; font-size: 22px; line-height: 1.25;
  letter-spacing: -.005em;
  color: var(--navy);
  margin: 0 0 22px;
  padding-right: 48px;
}
.bd-aud-list{ list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 14px; }
.bd-aud-list li{
  display: grid; grid-template-columns: 22px 1fr; gap: 13px; align-items: start;
  font-family: var(--sans);
  font-size: 14.5px; line-height: 1.5;
  color: var(--ink);
}
.bd-tick{
  display: grid; place-items: center;
  width: 22px; height: 22px; border-radius: 50%;
  margin-top: 1px;
}
.bd-tick svg{ width: 14px; height: 14px; }
.bd-tick.yes{ background: rgba(46,107,74,.14); color: var(--ok-ink); }
.bd-tick.no{ background: rgba(168,72,61,.12); color: var(--no-ink); }

/* -- También te puede interesar --------------------------------------- */
.bd-rel-grid{
  display: grid; grid-template-columns: 1fr 1fr; gap: 20px;
}
.bd-rel-card{
  display: grid; grid-template-columns: 88px 1fr; gap: 20px;
  align-items: center;
  padding: 20px;
  background: var(--paper);
  border: 1px solid var(--rule);
  transition: border-color .15s ease, transform .15s ease, box-shadow .15s ease;
}
.bd-rel-card:hover{
  border-color: var(--navy);
  transform: translateY(-2px);
  box-shadow: 0 14px 28px -14px rgba(11,29,58,.3);
}
.bd-rel-cover{
  display: flex; align-items: flex-end; justify-content: center;
  aspect-ratio: 3/4;
}
.bd-rel-cover img{
  display: block; height: 100%; width: auto; max-width: 100%;
  object-fit: contain;
  box-shadow: -2px 0 0 rgba(11,29,58,.18), 0 10px 18px -8px rgba(11,29,58,.26);
}
.bd-rel-body{ display: flex; flex-direction: column; min-width: 0; }
.bd-rel-title{
  font-family: var(--serif);
  font-weight: 400; font-size: 18px; line-height: 1.2;
  letter-spacing: -.005em;
  color: var(--navy);
  margin: 0 0 6px;
}
.bd-rel-sub{
  font-family: var(--sans);
  font-size: 13px; line-height: 1.5;
  color: var(--ink-2);
  margin: 0 0 14px;
}
.bd-rel-meta{
  display: flex; align-items: center; justify-content: space-between;
  margin-top: auto;
  font-family: var(--mono);
  font-size: 11px; color: var(--muted);
  letter-spacing: .01em;
}
.bd-rel-arrow{
  display: inline-flex; color: var(--navy);
  transition: transform .15s ease;
}
.bd-rel-arrow svg{ width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 1.8; }
.bd-rel-card:hover .bd-rel-arrow{ transform: translateX(4px); }

/* -- CTA final --------------------------------------------------------- */
.bd-final{
  display: grid; grid-template-columns: auto 1fr auto;
  align-items: center; gap: 30px;
  padding: 40px 44px;
  background: var(--ink-block);
  border-top: 3px solid var(--insight);
}
.bd-final-ic{
  display: grid; place-items: center;
  width: 56px; height: 56px; border-radius: 50%;
  background: rgba(255,199,44,.14);
  color: var(--insight);
}
.bd-final-ic svg{ width: 28px; height: 28px; stroke: currentColor; fill: none; stroke-width: 1.5; }
.bd-final-title{
  font-family: var(--serif);
  font-weight: 400; font-size: 24px; line-height: 1.3;
  letter-spacing: -.01em;
  color: #fff;
  margin: 0 0 6px;
  max-width: 640px;
  text-wrap: pretty;
}
.bd-final-sub{
  font-family: var(--sans);
  font-size: 14px; color: #D9DEE7;
  margin: 0;
}
.bd-final .bd-cta-primary,
.bd-final-btn{
  background: var(--insight);
  color: var(--on-amber);
  border-color: var(--insight);
  white-space: nowrap;
}
.bd-final .bd-cta-primary:hover{ background: var(--insight-2); border-color: var(--insight-2); }

/* -- Ediciones especiales para empresa --------------------------------- */
.bd-special{
  display: grid; grid-template-columns: auto 1fr auto;
  align-items: center; gap: 28px;
  padding: 36px 40px;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-top: 3px solid var(--insight);
}
.bd-special-ic{
  display: grid; place-items: center;
  width: 52px; height: 52px; border-radius: 50%;
  background: rgba(255,199,44,.16);
  color: var(--insight-2);
}
.bd-special-ic svg{ width: 26px; height: 26px; stroke: currentColor; fill: none; stroke-width: 1.5; }
.bd-special-title{
  font-family: var(--serif);
  font-weight: 400; font-size: 23px; line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--ink);
  margin: 0 0 6px;
}
.bd-special-desc{
  font-family: var(--sans);
  font-size: 15px; line-height: 1.5; color: var(--ink-2);
  margin: 0; max-width: 560px;
  text-wrap: pretty;
}
.bd-special-btn{ white-space: nowrap; }
@media (max-width: 760px){
  .bd-special{ grid-template-columns: 1fr; gap: 20px; padding: 30px 24px; }
  .bd-special-btn{ justify-self: start; }
}

/* -- Responsive ------------------------------------------------------- */
@media (max-width: 1200px){
  .bd-hero-grid{ grid-template-columns: 0.95fr 1.15fr; }
  .bd-hero-grid > aside{ grid-column: 1 / -1; }
  .bd-more-grid{ grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 980px){
  .bd-find-grid{ grid-template-columns: 1fr; gap: 30px; }
  .bd-reviews-grid{ grid-template-columns: 1fr; gap: 34px; }
}
@media (max-width: 900px){
  .bd-hero-grid{ grid-template-columns: 1fr; gap: 32px; }
  .bd-about-grid{ grid-template-columns: 1fr; gap: 32px; }
  .bd-twocol{ grid-template-columns: 1fr; gap: 32px; }
  .bd-more-grid{ grid-template-columns: 1fr 1fr; }
  .bd-title{ font-size: 44px; }
  .bd-audience-grid{ grid-template-columns: 1fr; }
  .bd-rel-grid{ grid-template-columns: 1fr; }
  .bd-final{ grid-template-columns: 1fr; text-align: left; gap: 22px; }
}
@media (max-width: 560px){
  .bd-find-list{ grid-template-columns: 1fr; gap: 26px; }
  .bd-cta-row{ flex-direction: column; align-items: stretch; }
  .bd-cta-primary, .bd-cta-secondary{ justify-content: center; }
  .bd-rail-nav{ display: none; }
  .bd-preview-track{ padding-left: 24px; padding-right: 24px; }
}

/* =====================================================================
   DARK MODE — superficies claras literales de la ficha de libro
   ===================================================================== */
:root[data-theme="dark"] .bd-book{
  /* botón de tienda: era #fff fijo \u2192 texto crema invisible. Pasa a papel
     oscuro con texto que ya flipa (wordmarks en tokens). */
}
:root[data-theme="dark"] .bd-buy-row{ background:var(--paper); }
:root[data-theme="dark"] .bd-buy-wordmark .wm-square{
  background:var(--navy); color:var(--bg);
}
/* portadas/escaneo: el blanco simula el papel del libro \u2014 se mantiene como
   objeto f\u00edsico claro. */

/* "Para qui\u00e9n es / no es" \u2014 tokens locales verde/rojo recalibrados a panel
   oscuro tintado (antes #EAF2EC/#F4EEEC fijos \u2192 texto crema invisible). */
:root[data-theme="dark"] .bd-hero,
:root[data-theme="dark"] .bd-band,
:root[data-theme="dark"] .bd-audience{
  --ok-bg:#172A20; --ok-rule:rgba(120,200,160,.22); --ok-ink:#5FB98A;
  --no-bg:#2A1C19; --no-rule:rgba(210,140,130,.22); --no-ink:#D17F72;
}