/* ==========================================================================
   EDITORIAL CORELIA - DESIGN SYSTEM & STYLES
   Estética: Editorial suiza, rigurosa, institucional y de alta confianza (Anti-AI slop)
   ========================================================================== */

:root {
  /* Paleta cromática institucional */
  --color-bg: #F9F9F7;               /* Papel editorial cálido */
  --color-surface: #FFFFFF;          /* Blanco puro para tarjetas */
  --color-surface-subtle: #F3F4F1;   /* Fondo secundario neutro */
  --color-border: #E3E4DC;           /* Bordes sutiles y elegantes */
  --color-border-hover: #C8CAC0;
  
  /* Tonos oscuros de autoridad */
  --color-navy-dark: #0A1626;        /* Azul marino profundo */
  --color-navy-main: #112239;        /* Azul institucional */
  --color-text-main: #1D2939;        /* Texto principal de alto contraste */
  --color-text-muted: #596579;       /* Texto secundario de lectura */
  --color-text-light: #8E9BAE;       /* Texto auxiliar */

  /* Acentos de distinción */
  --color-gold: #C59B27;             /* Oro/Ocre de sello editorial */
  --color-gold-hover: #AD851D;
  --color-gold-soft: #FBF5E6;
  --color-seal-green: #1B4D3E;       /* Verde verificación regulatoria */
  --color-seal-green-soft: #E8F2EC;
  --color-whatsapp: #1EBE5D;         /* Verde WhatsApp oficial */
  --color-whatsapp-hover: #179E4C;
  --color-crimson: #9E2A2B;          /* Alertas y COFEPRIS */
  --color-crimson-soft: #FBEBEB;

  /* Tipografías */
  --font-serif: 'Fraunces', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Elevaciones sutiles */
  --shadow-sm: 0 1px 2px rgba(10, 22, 38, 0.04);
  --shadow-md: 0 4px 12px rgba(10, 22, 38, 0.06);
  --shadow-lg: 0 12px 28px rgba(10, 22, 38, 0.09);
  --shadow-book: -8px 12px 24px rgba(10, 22, 38, 0.14), inset -2px 0 6px rgba(0,0,0,0.1);

  /* Transiciones */
  --transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
}

/* Reset y Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  color-scheme: light;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ==========================================================================
   TIPOGRAFÍA EDITORIAL
   ========================================================================== */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  color: var(--color-navy-dark);
  font-weight: 600;
  line-height: 1.25;
}

.highlight-serif {
  font-style: italic;
  font-weight: 400;
  color: var(--color-navy-main);
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gold-hover);
  margin-bottom: 8px;
}

.section-heading {
  margin-bottom: 48px;
}

.section-heading.text-center {
  text-align: center;
  max-width: 780px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 54px;
}

.section-heading h2 {
  font-size: 2.25rem;
  margin-bottom: 14px;
}

.section-lead {
  font-size: 1.05rem;
  color: var(--color-text-muted);
}

/* ==========================================================================
   BOTONES Y COMPONENTES UI
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 11px 22px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-navy-main);
  color: #FFFFFF;
  border-color: var(--color-navy-main);
}

.btn-primary:hover {
  background-color: var(--color-navy-dark);
  box-shadow: 0 4px 12px rgba(10, 22, 38, 0.2);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: #FFFFFF;
  color: var(--color-navy-main);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  background-color: var(--color-surface-subtle);
  border-color: var(--color-navy-main);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-navy-main);
  border-color: var(--color-border);
}

.btn-outline:hover {
  background-color: var(--color-surface-subtle);
  border-color: var(--color-navy-main);
}

.btn-whatsapp-header {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--color-seal-green-soft);
  color: var(--color-seal-green);
  border: 1px solid rgba(27, 77, 62, 0.2);
  padding: 8px 16px;
  font-size: 0.875rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
}

.btn-whatsapp-header:hover {
  background-color: var(--color-seal-green);
  color: #FFFFFF;
}

.btn-whatsapp-large {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background-color: var(--color-whatsapp);
  color: #FFFFFF;
  font-size: 1.05rem;
  font-weight: 700;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 14px rgba(30, 190, 93, 0.35);
}

.btn-whatsapp-large:hover {
  background-color: var(--color-whatsapp-hover);
  transform: translateY(-1px);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 14px 26px;
  font-size: 1rem;
}

/* ==========================================================================
   HEADER & TOP BAR
   ========================================================================== */
.top-announcement-bar {
  background-color: var(--color-navy-dark);
  color: #E2E8F0;
  font-size: 0.8125rem;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.announcement-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.badge-pulse {
  width: 8px;
  height: 8px;
  background-color: #10B981;
  border-radius: 50%;
  box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.3);
}

.announcement-link {
  color: var(--color-gold);
  font-weight: 600;
  margin-left: 4px;
}

.announcement-link:hover {
  text-decoration: underline;
}

.site-header {
  position: sticky;
  top: 0;
  background-color: rgba(249, 249, 247, 0.95);
  backdrop-filter: blur(10px);
  z-index: 100;
  border-bottom: 1px solid var(--color-border);
  padding: 16px 0;
  transition: var(--transition);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-crest {
  width: 40px;
  height: 40px;
  border: 1.5px solid var(--color-navy-main);
  background-color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-navy-main);
  border-radius: var(--radius-sm);
}

.logo-crest.white {
  background-color: rgba(255,255,255,0.05);
  border-color: rgba(255,255,255,0.2);
  color: #FFFFFF;
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-name {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: 0.06em;
  color: var(--color-navy-dark);
}

.logo-tagline {
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 28px;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-main);
  position: relative;
  padding: 4px 0;
}

.nav-link:hover {
  color: var(--color-gold-hover);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-navy-dark);
  transition: var(--transition);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
  padding: 70px 0 60px;
  border-bottom: 1px solid var(--color-border);
  background: radial-gradient(circle at 85% 20%, rgba(197, 155, 39, 0.05) 0%, transparent 60%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 60px;
  align-items: center;
}

.hero-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-navy-main);
  background-color: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  padding: 6px 14px;
  border-radius: 50px;
  margin-bottom: 20px;
}

.hero-title {
  font-size: 2.85rem;
  line-height: 1.18;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: 32px;
  max-width: 580px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 44px;
  flex-wrap: wrap;
}

.hero-trust-bar {
  display: flex;
  align-items: center;
  gap: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

.trust-item {
  display: flex;
  flex-direction: column;
}

.trust-number {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--color-navy-dark);
  line-height: 1;
  margin-bottom: 4px;
}

.trust-label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  max-width: 140px;
  line-height: 1.25;
}

.trust-divider {
  width: 1px;
  height: 36px;
  background-color: var(--color-border);
}

/* Featured Book Mockup */
.featured-book-stage {
  position: relative;
  perspective: 1000px;
}

.book-card-featured {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 36px 32px 28px;
  box-shadow: var(--shadow-book);
  position: relative;
  overflow: hidden;
  border-left: 6px solid var(--color-navy-main);
}

.book-spine-accent {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-gold) 0%, var(--color-navy-main) 100%);
}

.book-header-mini {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.badge-category {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  background-color: var(--color-crimson-soft);
  color: var(--color-crimson);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
}

.badge-year {
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
}

.book-title-mockup h3 {
  font-size: 1.45rem;
  margin-bottom: 12px;
  color: var(--color-navy-dark);
}

.book-title-mockup p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  margin-bottom: 24px;
}

.book-meta-footer {
  border-top: 1px solid var(--color-border);
  padding-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.included-assets {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.asset-tag {
  font-size: 0.75rem;
  background-color: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  color: var(--color-navy-main);
}

.btn-sample-trigger {
  width: 100%;
  background: transparent;
  border: 1px dashed var(--color-navy-main);
  color: var(--color-navy-main);
  padding: 10px;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: var(--transition);
}

.btn-sample-trigger:hover {
  background-color: var(--color-surface-subtle);
  border-style: solid;
}

/* Sello flotante */
.editorial-seal {
  position: absolute;
  bottom: -20px;
  right: -20px;
  width: 90px;
  height: 90px;
  background-color: #FFFFFF;
  border: 2px solid var(--color-seal-green);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
}

.seal-svg {
  width: 100%;
  height: 100%;
  position: absolute;
  animation: rotateSeal 24s linear infinite;
}

@keyframes rotateSeal {
  100% { transform: rotate(360deg); }
}

.seal-text {
  font-size: 7.5px;
  font-family: var(--font-sans);
  font-weight: 700;
  fill: var(--color-seal-green);
  letter-spacing: 1.5px;
}

.seal-center {
  font-size: 1.25rem;
  color: var(--color-seal-green);
  font-weight: bold;
}

/* ==========================================================================
   SECCIÓN DETALLADA DEL PRODUCTO (GUÍA COFEPRIS $179 MXN)
   ========================================================================== */
.single-product-section {
  padding: 80px 0;
}

.product-highlight-card {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: var(--shadow-md);
}

.product-highlight-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: start;
}

.badge-row {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 16px;
}

.category-pill.cofepris {
  background-color: var(--color-crimson-soft);
  color: var(--color-crimson);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
}

.format-pill {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-text-muted);
}

.product-detail-info h2 {
  font-size: 2.1rem;
  margin-bottom: 16px;
}

.lead-text {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 28px;
}

.key-points-list h3 {
  font-size: 1.15rem;
  margin-bottom: 16px;
}

.key-points-list ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.key-points-list li {
  font-size: 0.9375rem;
  color: var(--color-text-main);
  position: relative;
  padding-left: 24px;
  line-height: 1.5;
}

.key-points-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--color-seal-green);
  font-weight: bold;
}

/* Purchase Box */
.product-purchase-box {
  background-color: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px 28px;
}

.purchase-box-header {
  text-align: center;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 20px;
  margin-bottom: 24px;
}

.price-eyebrow {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-text-light);
}

.price-display {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 4px;
  margin: 8px 0;
}

.currency-sign {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-navy-dark);
}

.main-price {
  font-family: var(--font-serif);
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-navy-dark);
}

.currency-code {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-text-muted);
  align-self: flex-end;
  margin-bottom: 8px;
}

.price-note {
  font-size: 0.8125rem;
  color: var(--color-seal-green);
  font-weight: 600;
  display: block;
}

.purchase-instructions h4 {
  font-size: 1rem;
  margin-bottom: 8px;
  color: var(--color-navy-dark);
}

.purchase-instructions p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 20px;
  line-height: 1.45;
}

.contact-action-cards {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 20px;
}

.contact-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.contact-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.whatsapp-card {
  border-left: 4px solid var(--color-whatsapp);
}

.whatsapp-card:hover {
  border-color: var(--color-whatsapp);
}

.email-card {
  border-left: 4px solid var(--color-navy-main);
}

.email-card:hover {
  border-color: var(--color-navy-main);
}

.contact-card-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-navy-main);
}

.whatsapp-card .contact-card-icon {
  color: var(--color-whatsapp);
}

.contact-card-text {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  padding-left: 12px;
}

.channel-title {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-weight: 600;
}

.channel-val {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-navy-dark);
}

.card-arrow {
  font-size: 1.1rem;
  font-weight: bold;
  color: var(--color-text-muted);
}

.quick-delivery-notice {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  background-color: var(--color-surface);
  border: 1px dashed var(--color-border);
  padding: 10px;
  border-radius: var(--radius-sm);
  text-align: center;
}

/* ==========================================================================
   SECCIÓN DE CAPÍTULOS (11 CAPÍTULOS)
   ========================================================================== */
.chapters-section {
  padding: 85px 0;
  background-color: #FFFFFF;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.chapters-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 44px;
}

.chapter-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 24px 20px;
  display: flex;
  gap: 16px;
  transition: var(--transition);
}

.chapter-card:hover {
  border-color: var(--color-navy-main);
  background-color: #FFFFFF;
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.chapter-num {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-gold);
  line-height: 1;
  flex-shrink: 0;
}

.chapter-content h4 {
  font-size: 1rem;
  margin-bottom: 6px;
  color: var(--color-navy-dark);
}

.chapter-content p {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.45;
}

.highlight-chapter {
  background-color: var(--color-crimson-soft);
  border-color: rgba(158, 42, 43, 0.3);
}

.highlight-chapter .chapter-num {
  color: var(--color-crimson);
}

.highlight-chapter-green {
  background-color: var(--color-seal-green-soft);
  border-color: rgba(27, 77, 62, 0.3);
}

.highlight-chapter-green .chapter-num {
  color: var(--color-seal-green);
}

.chapters-cta-wrap {
  text-align: center;
}

/* ==========================================================================
   LÍNEAS EDITORIALES (2 COLUMNAS)
   ========================================================================== */
.regulatory-pillars-section {
  padding: 80px 0;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.pillars-grid-two {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.pillar-card {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition);
}

.pillar-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-navy-main);
}

.pillar-card.active-pillar {
  border-top: 4px solid var(--color-crimson);
}

.pillar-status-badge {
  position: absolute;
  top: 20px;
  right: 20px;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  background-color: var(--color-seal-green-soft);
  color: var(--color-seal-green);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
}

.coming-badge {
  background-color: var(--color-gold-soft);
  color: var(--color-gold-hover);
}

.pillar-icon-box {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.cofepris-accent {
  background-color: var(--color-crimson-soft);
  color: var(--color-crimson);
}

.biz-accent {
  background-color: var(--color-gold-soft);
  color: var(--color-gold-hover);
}

.pillar-card h3 {
  font-size: 1.35rem;
  margin-bottom: 12px;
}

.pillar-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.55;
  margin-bottom: 20px;
}

.pillar-list {
  list-style: none;
  margin-bottom: 28px;
  flex-grow: 1;
}

.pillar-list li {
  font-size: 0.875rem;
  padding: 8px 0;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-main);
  position: relative;
  padding-left: 16px;
}

.pillar-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--color-gold);
}

.pillar-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-navy-main);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.pillar-link:hover {
  color: var(--color-gold-hover);
}

/* ==========================================================================
   METODOLOGÍA EDITORIAL
   ========================================================================== */
.methodology-section {
  padding: 90px 0;
  background-color: #FFFFFF;
}

.methodology-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.method-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  position: relative;
}

.method-num {
  font-family: var(--font-serif);
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--color-gold);
  line-height: 1;
  margin-bottom: 16px;
}

.method-card h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
}

.method-card p {
  font-size: 0.84375rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ==========================================================================
   FAQS ACORDEÓN
   ========================================================================== */
.faqs-section {
  padding: 90px 0;
  background-color: var(--color-bg);
  border-top: 1px solid var(--color-border);
}

.faq-accordion {
  max-width: 840px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background-color: #FFFFFF;
  transition: var(--transition);
}

.faq-item.active {
  border-color: var(--color-navy-main);
}

.faq-question {
  width: 100%;
  background: transparent;
  border: none;
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-align: left;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-navy-dark);
  cursor: pointer;
}

.faq-icon {
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--color-gold-hover);
  transition: var(--transition);
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
  padding: 0 24px;
}

.faq-item.active .faq-answer {
  padding-bottom: 20px;
}

.faq-answer p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   CTA BANNER FINAL (WHATSAPP & CONTACTO)
   ========================================================================== */
.cta-banner-section {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--color-navy-dark) 0%, var(--color-navy-main) 100%);
  color: #FFFFFF;
  text-align: center;
}

.cta-banner-content {
  max-width: 780px;
  margin: 0 auto;
}

.cta-banner-content h2 {
  color: #FFFFFF;
  font-size: 2.4rem;
  margin-bottom: 16px;
}

.cta-banner-content p {
  color: #CBD5E1;
  font-size: 1.125rem;
  margin-bottom: 32px;
}

.cta-banner-actions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ==========================================================================
   MODAL DE MUESTRA / ÍNDICE
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(10, 22, 38, 0.7);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.modal-backdrop.active {
  opacity: 1;
  visibility: visible;
}

.modal-window {
  background-color: #FFFFFF;
  border-radius: var(--radius-md);
  width: 100%;
  max-width: 760px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  animation: modalSlideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalSlideUp {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.modal-badge {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-crimson);
}

.modal-header h3 {
  font-size: 1.35rem;
  margin-top: 4px;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.25rem;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 4px 8px;
}

.modal-body {
  padding: 24px;
  overflow-y: auto;
  flex-grow: 1;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--color-border);
  background-color: var(--color-bg);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-price-tag span {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  display: block;
}

.modal-price-tag strong {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--color-navy-dark);
}

.modal-buttons {
  display: flex;
  gap: 10px;
}

.sample-extract-box {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 18px;
  margin-top: 20px;
  font-size: 0.9rem;
}

.sample-toc-list-detailed {
  list-style: none;
  margin: 14px 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sample-toc-list-detailed li {
  padding: 8px 12px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: var(--color-text-main);
  line-height: 1.4;
}

.highlight-toc-item {
  background-color: var(--color-crimson-soft) !important;
  border-color: rgba(158, 42, 43, 0.3) !important;
  color: var(--color-crimson) !important;
}

.highlight-toc-item-green {
  background-color: var(--color-seal-green-soft) !important;
  border-color: rgba(27, 77, 62, 0.3) !important;
  color: var(--color-seal-green) !important;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  background-color: var(--color-navy-dark);
  color: #94A3B8;
  padding: 70px 0 30px;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.footer-grid-simple {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1.4fr;
  gap: 48px;
  margin-bottom: 50px;
}

.footer-brand-name {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: #FFFFFF;
  font-weight: 700;
  display: block;
  margin: 12px 0 8px;
}

.footer-desc {
  font-size: 0.8125rem;
  line-height: 1.6;
  margin-bottom: 14px;
}

.footer-domain {
  font-size: 0.75rem;
  color: var(--color-gold);
  font-weight: 600;
  letter-spacing: 0.05em;
}

.footer-links-col h4 {
  color: #FFFFFF;
  font-size: 0.9375rem;
  margin-bottom: 18px;
  font-family: var(--font-sans);
  font-weight: 700;
  letter-spacing: 0.04em;
}

.footer-links-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links-col a {
  font-size: 0.8125rem;
  color: #94A3B8;
}

.footer-links-col a:hover {
  color: #FFFFFF;
}

.footer-contact-info {
  font-size: 0.84375rem;
  line-height: 1.7;
}

.footer-contact-info strong {
  color: #FFFFFF;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.75rem;
  color: #64748B;
  line-height: 1.5;
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .product-highlight-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .chapters-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pillars-grid-two {
    grid-template-columns: 1fr;
  }
  .methodology-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid-simple {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.2rem;
  }
  .product-highlight-card {
    padding: 24px;
  }
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: #FFFFFF;
    border-bottom: 1px solid var(--color-border);
    padding: 20px;
    box-shadow: var(--shadow-md);
  }
  .main-nav.active {
    display: block;
  }
  .nav-list {
    flex-direction: column;
    gap: 16px;
  }
  .menu-toggle {
    display: flex;
  }
  .chapters-grid {
    grid-template-columns: 1fr;
  }
  .methodology-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid-simple {
    grid-template-columns: 1fr;
  }
}