/* ============================================================
   Estilos extraídos de index.html (Fase 2 — CSS fuera del HTML)
   ============================================================ */

:root {
  /* HOPE Colors - Consistente con la web principal */
  --ink: #000000;
  --ink-deep: #1a1a1a;
  --paper: #ffffff;
  --paper-warm: #f8f9fc;
  --mint: #0066CC;
  --mint-soft: #0052A3;
  --coral: #FF6B5B;
  --gold: #E8B547;
  --gray-line: rgba(255, 255, 255, 0.1);
  --gray-text: #b3b3b3;
  --display: 'Fraunces', Georgia, serif;
  --body: 'Inter Tight', -apple-system, sans-serif;
  --mono: 'JetBrains Mono', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--ink);
  color: var(--paper);
  font-family: var(--body);
  font-weight: 400;
  line-height: 1.5;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Noise texture overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ============ MAIN NAVIGATION ============ */
.main-nav {
  background: rgba(10, 20, 32, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--gray-line);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.nav-left {
  flex-shrink: 0;
}

.logo {
  display: block;
  position: relative;
  height: 34px;
  text-decoration: none;
}

.logo-img {
  height: 34px;
  width: auto;
  display: block;
}

.nav-center {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  justify-content: center;
}

.nav-link {
  color: var(--paper);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s ease;
  white-space: nowrap;
  opacity: 0.8;
}

.nav-link:hover {
  color: var(--mint);
  opacity: 1;
}

.nav-right {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-shrink: 0;
}

.nav-btn-secondary {
  padding: 8px 16px;
  background: transparent;
  border: 1px solid var(--gray-line);
  border-radius: 6px;
  color: var(--paper);
  text-decoration: none;
  font-size: 14px;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.nav-btn-secondary:hover {
  border-color: var(--mint);
  color: var(--mint);
}

.nav-btn-primary {
  padding: 8px 16px;
  background: var(--mint);
  border: 1px solid var(--mint);
  border-radius: 6px;
  color: var(--ink);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.nav-btn-primary:hover {
  background: var(--mint-soft);
  border-color: var(--mint-soft);
}

/* Mobile nav */
@media (max-width: 1024px) {
  .nav-center {
    display: none;
  }

  .nav-container {
    padding: 12px 20px;
  }

  .logo-img {
    height: 28px;
  }

  .nav-right {
    gap: 8px;
  }

  .nav-btn-secondary,
  .nav-btn-primary {
    padding: 6px 12px;
    font-size: 13px;
  }
}

@media (max-width: 480px) {
  .nav-btn-secondary {
    display: none;
  }
}

/* ============ HERO ============ */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 140px 0 80px;
  position: relative;
}

.hero-eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--mint);
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.hero-eyebrow::before {
  content: '';
  width: 40px;
  height: 1px;
  background: var(--mint);
}

.hero h1 {
  font-family: var(--display);
  font-weight: 300;
  font-size: clamp(56px, 11vw, 168px);
  line-height: 0.92;
  letter-spacing: -0.04em;
  margin-bottom: 40px;
}

.hero h1 em {
  font-style: italic;
  font-weight: 400;
  color: var(--mint);
}

.hero h1 .ampersand {
  font-style: italic;
  font-weight: 300;
  color: var(--gray-text);
}

.hero-sub {
  max-width: 620px;
  font-size: clamp(17px, 1.6vw, 22px);
  line-height: 1.55;
  color: var(--gray-text);
  font-weight: 300;
  margin-bottom: 48px;
}

.hero-meta {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
  padding-top: 32px;
  border-top: 1px solid var(--gray-line);
  max-width: 620px;
}

.meta-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.meta-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-text);
}

.meta-value {
  font-family: var(--display);
  font-size: 20px;
  font-weight: 500;
}

.hero-decoration {
  position: absolute;
  right: -80px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--display);
  font-style: italic;
  font-weight: 300;
  font-size: 420px;
  color: var(--mint);
  opacity: 0.04;
  line-height: 1;
  pointer-events: none;
  z-index: -1;
}

/* ============ INTRO ============ */
.intro {
  padding: 120px 0;
  border-top: 1px solid var(--gray-line);
}

.intro-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 80px;
  align-items: start;
}

.intro-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--mint);
  position: sticky;
  top: 120px;
}

.intro-body p {
  font-family: var(--display);
  font-weight: 300;
  font-size: clamp(22px, 2.4vw, 32px);
  line-height: 1.45;
  letter-spacing: -0.015em;
  margin-bottom: 24px;
}

.intro-body p strong {
  font-weight: 500;
  color: var(--mint);
  font-style: italic;
}

/* ============ CONCEPTS ============ */
.concepts {
  padding: 120px 0;
  border-top: 1px solid var(--gray-line);
}

.section-header {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 80px;
  margin-bottom: 100px;
  align-items: end;
}

.section-number {
  font-family: var(--display);
  font-weight: 300;
  font-style: italic;
  font-size: 96px;
  line-height: 1;
  color: var(--mint);
  letter-spacing: -0.04em;
}

.section-header h2 {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(40px, 5vw, 72px);
  line-height: 1;
  letter-spacing: -0.03em;
}

.section-header h2 em {
  font-style: italic;
  font-weight: 300;
  color: var(--gray-text);
}

.concept-list {
  display: flex;
  flex-direction: column;
}

.concept {
  display: grid;
  grid-template-columns: 80px 280px 1fr;
  gap: 48px;
  padding: 48px 0;
  border-top: 1px solid var(--gray-line);
  align-items: start;
  transition: background 0.4s ease;
  position: relative;
}

.concept:last-child {
  border-bottom: 1px solid var(--gray-line);
}

.concept:hover {
  background: rgba(45, 212, 167, 0.02);
}

.concept:hover .concept-letter {
  color: var(--mint);
  transform: translateX(8px);
}

.concept-letter {
  font-family: var(--display);
  font-weight: 900;
  font-size: 64px;
  line-height: 0.85;
  color: var(--paper);
  letter-spacing: -0.04em;
  transition: all 0.4s ease;
}

.concept-term {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 8px;
}

.concept-term h3 {
  font-family: var(--display);
  font-weight: 500;
  font-size: 28px;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.concept-tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mint);
}

.concept-body {
  padding-top: 12px;
}

.concept-body p {
  font-size: 17px;
  line-height: 1.6;
  color: rgba(245, 241, 232, 0.85);
  margin-bottom: 16px;
}

.concept-body .example {
  font-family: var(--display);
  font-style: italic;
  font-size: 16px;
  line-height: 1.5;
  color: var(--gray-text);
  padding-left: 20px;
  border-left: 2px solid var(--mint);
  margin-top: 16px;
}

/* ============ STACK SECTION ============ */
.stack {
  padding: 120px 0;
  border-top: 1px solid var(--gray-line);
  background: var(--ink-deep);
}

.stack-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 64px;
}

.stack-card {
  padding: 32px;
  border: 1px solid var(--gray-line);
  border-radius: 4px;
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}

.stack-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--mint);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.4s ease;
}

.stack-card:hover {
  border-color: rgba(45, 212, 167, 0.3);
  transform: translateY(-4px);
}

.stack-card:hover::before {
  transform: scaleY(1);
}

.stack-num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--mint);
  margin-bottom: 16px;
}

.stack-card h4 {
  font-family: var(--display);
  font-weight: 500;
  font-size: 24px;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.stack-card .use {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-text);
  margin-bottom: 16px;
}

.stack-card p {
  font-size: 15px;
  line-height: 1.55;
  color: rgba(245, 241, 232, 0.75);
}

/* ============ QUOTE ============ */
.quote {
  padding: 160px 0;
  border-top: 1px solid var(--gray-line);
  text-align: center;
  position: relative;
}

.quote::before {
  content: '"';
  position: absolute;
  top: 60px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--display);
  font-size: 240px;
  line-height: 1;
  color: var(--mint);
  opacity: 0.15;
  font-style: italic;
  font-weight: 900;
}

.quote blockquote {
  font-family: var(--display);
  font-weight: 300;
  font-style: italic;
  font-size: clamp(32px, 5vw, 64px);
  line-height: 1.15;
  letter-spacing: -0.025em;
  max-width: 1000px;
  margin: 0 auto 40px;
  position: relative;
  z-index: 2;
}

.quote blockquote em {
  font-weight: 400;
  color: var(--mint);
  font-style: italic;
}

.quote cite {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-text);
  font-style: normal;
}

/* ============ AUTHOR ============ */
.author {
  padding: 120px 0;
  border-top: 1px solid var(--gray-line);
  background: var(--ink-deep);
}

.author-grid {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 80px;
  align-items: start;
}

.author-photo {
  position: relative;
}

.author-img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  border: 2px solid var(--mint);
  box-shadow: 0 20px 60px rgba(0, 102, 204, 0.15);
}

.author-content {
  padding-top: 20px;
}

.author-content .label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--mint);
  margin-bottom: 16px;
}

.author-content h3 {
  font-family: var(--display);
  font-weight: 400;
  font-size: 48px;
  line-height: 0.95;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
  color: var(--paper);
}

.author-content h3 em {
  font-style: italic;
  font-weight: 500;
  color: var(--mint);
}

.author-content .role {
  font-size: 16px;
  line-height: 1.6;
  color: var(--gray-text);
  margin-bottom: 24px;
}

.credentials {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 24px;
  margin-bottom: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--gray-line);
}

.credentials li {
  font-size: 13px;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--paper);
}

.credentials li::before {
  content: '';
  width: 5px;
  height: 5px;
  background: var(--mint);
  border-radius: 50%;
  flex-shrink: 0;
}

.author-bio-text p {
  font-size: 17px;
  line-height: 1.6;
  color: var(--paper);
  margin-bottom: 16px;
}

.clients-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-text);
  margin-top: 32px;
  margin-bottom: 16px;
}

.clients {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.client-pill {
  padding: 8px 14px;
  border: 1px solid var(--gray-line);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--paper);
  letter-spacing: 0.05em;
}

/* ============ CTA ============ */
.cta {
  padding: 160px 0;
  border-top: 1px solid var(--gray-line);
  text-align: center;
  background: var(--ink-deep);
}

.cta h2 {
  font-family: var(--display);
  font-weight: 300;
  font-size: clamp(40px, 6vw, 88px);
  line-height: 1;
  letter-spacing: -0.035em;
  margin-bottom: 32px;
}

.cta h2 em {
  font-style: italic;
  font-weight: 400;
  color: var(--mint);
}

.cta p {
  max-width: 560px;
  margin: 0 auto 48px;
  font-size: 18px;
  line-height: 1.55;
  color: var(--gray-text);
}

.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  padding: 18px 32px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: 999px;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.btn-primary {
  background: var(--mint);
  color: var(--ink);
  border: 1px solid var(--mint);
}

.btn-primary:hover {
  background: transparent;
  color: var(--mint);
  transform: translateY(-2px);
}

.btn-secondary {
  background: transparent;
  color: var(--paper);
  border: 1px solid var(--gray-line);
}

.btn-secondary:hover {
  border-color: var(--paper);
}

/* ============ DOWNLOAD PDF ============ */
.download-section {
  padding: 80px 0;
  background: linear-gradient(135deg, rgba(46, 212, 167, 0.08) 0%, rgba(255, 107, 91, 0.06) 100%);
  border-top: 1px solid var(--gray-line);
  border-bottom: 1px solid var(--gray-line);
}

.download-card {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 48px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--gray-line);
  border-radius: 20px;
  backdrop-filter: blur(10px);
}

.download-icon {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--mint);
  border-radius: 50%;
  color: var(--ink);
}

.download-content {
  flex: 1;
}

.download-title {
  font-family: var(--display);
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--paper);
}

.download-desc {
  font-size: 16px;
  color: var(--gray-text);
  line-height: 1.6;
}

.btn-download {
  flex-shrink: 0;
  padding: 18px 32px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  background: var(--mint);
  color: var(--ink);
  border: 1px solid var(--mint);
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
}

.btn-download:hover {
  background: transparent;
  color: var(--mint);
  transform: translateY(-2px);
}

.btn-download:active {
  transform: translateY(0);
}

.btn-download svg {
  transition: transform 0.3s ease;
}

.btn-download:hover svg {
  transform: translateY(2px);
}

/* PDF Modal */
.pdf-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.95);
  z-index: 999999;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pdf-modal-content {
  background: #1a1a1a;
  padding: 40px;
  border-radius: 12px;
  max-width: 600px;
  border: 2px solid #0066CC;
}

.pdf-modal-title {
  color: #0066CC;
  margin: 0 0 20px 0;
  font-size: 24px;
}

.pdf-modal-text {
  color: #fff;
  margin-bottom: 15px;
  font-size: 16px;
  line-height: 1.6;
}

.pdf-modal-list {
  color: #fff;
  font-size: 15px;
  line-height: 1.8;
  margin: 20px 0;
}

.pdf-modal-list strong {
  color: #0066CC;
}

.pdf-modal-buttons {
  display: flex;
  gap: 15px;
  margin-top: 25px;
}

.pdf-modal-btn-primary {
  flex: 1;
  background: #0066CC;
  color: white;
  border: none;
  padding: 15px;
  border-radius: 6px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
}

.pdf-modal-btn-secondary {
  background: transparent;
  color: #999;
  border: 1px solid #333;
  padding: 15px 25px;
  border-radius: 6px;
  font-size: 16px;
  cursor: pointer;
}

/* Responsive */
@media (max-width: 768px) {
  .download-card {
    flex-direction: column;
    text-align: center;
    padding: 32px 24px;
    gap: 24px;
  }

  .download-title {
    font-size: 22px;
  }

  .download-desc {
    font-size: 14px;
  }

  .btn-download {
    width: 100%;
    justify-content: center;
  }
}

/* ============ FOOTER ============ */
footer {
  padding: 64px 0 40px;
  border-top: 1px solid var(--gray-line);
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

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

.footer-meta {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gray-text);
  text-align: right;
}

/* ============ ANIMATIONS ============ */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-up {
  animation: fadeUp 0.8s ease-out backwards;
}

.hero h1 { animation: fadeUp 1s ease-out 0.1s backwards; }
.hero-eyebrow { animation: fadeUp 0.8s ease-out backwards; }
.hero-sub { animation: fadeUp 0.8s ease-out 0.3s backwards; }
.hero-meta { animation: fadeUp 0.8s ease-out 0.5s backwards; }

/* Scroll reveal */
.reveal {
  opacity: 1;
  transform: translateY(0px);
  transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* ============ RESPONSIVE ============ */
@media (max-width: 900px) {
  .container { padding: 0 20px; }
  nav { padding: 16px 20px; }
  
  .intro-grid,
  .section-header,
  .author-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  .intro-label {
    position: static;
  }
  
  .section-number {
    font-size: 64px;
  }
  
  .concept {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 32px 0;
  }
  
  .concept-letter {
    font-size: 48px;
  }
  
  .hero {
    padding: 100px 0 60px;
  }
  
  .hero-meta {
    gap: 32px;
  }
  
  .author-card {
    padding: 40px 28px;
  }
  
  .author-card h3 {
    font-size: 40px;
  }
  
  .quote {
    padding: 100px 0;
  }
  
  .cta {
    padding: 100px 0;
  }
  
  .footer-grid {
    flex-direction: column;
    text-align: center;
  }
  
  .footer-meta {
    text-align: center;
  }
  
  .nav-cta {
    display: none;
  }
}

@media (max-width: 500px) {
  .hero-eyebrow {
    font-size: 10px;
  }

  .concept-body .example {
    font-size: 15px;
  }
}

/* ============ PRINT / PDF STYLES - HORIZONTAL ============ */
@media print {
  @page {
    margin: 1cm;
    size: A4 landscape;
  }

  /* Mantener diseño oscuro en PDF */
  * {
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
    color-adjust: exact !important;
  }

  html,
  body {
    background: #000000 !important;
    color: #ffffff !important;
  }

  /* Ocultar elementos que no queremos en el PDF */
  .main-nav,
  .download-section,
  .cta,
  footer,
  .quote {
    display: none !important;
  }

  /* Hero - Primera slide completa y centrada */
  .hero {
    background: #000000 !important;
    padding: 60px 80px !important;
    min-height: 18cm !important;
    display: flex !important;
    flex-direction: column !important;
    justify-content: center !important;
    page-break-after: always;
  }

  .hero .container {
    padding: 0 !important;
  }

  .hero h1 {
    font-size: 56px !important;
    line-height: 1.1 !important;
    margin: 20px 0 !important;
    color: #ffffff !important;
  }

  .hero h1 em {
    color: #0066CC !important;
  }

  .hero-eyebrow {
    font-size: 13px !important;
    margin-bottom: 15px !important;
    letter-spacing: 0.2em !important;
    color: #0066CC !important;
  }

  .hero-eyebrow::before {
    background: #0066CC !important;
  }

  .hero-sub {
    font-size: 18px !important;
    line-height: 1.6 !important;
    margin: 25px 0 !important;
    max-width: 85% !important;
    color: #b3b3b3 !important;
  }

  .hero-meta {
    display: flex !important;
    gap: 30px !important;
    margin-top: 25px !important;
    border-top: 1px solid rgba(255, 255, 255, 0.1) !important;
  }

  .meta-item {
    font-size: 14px !important;
  }

  .meta-label {
    font-size: 12px !important;
    color: #b3b3b3 !important;
  }

  .meta-value {
    font-size: 16px !important;
    color: #ffffff !important;
  }

  .hero-decoration {
    font-size: 220px !important;
    right: 60px !important;
    opacity: 0.08 !important;
    color: #0066CC !important;
  }

  /* Intro - Segunda slide completa */
  .intro {
    background: #000000 !important;
    padding: 60px 80px !important;
    min-height: 18cm !important;
    display: flex !important;
    align-items: center !important;
    page-break-after: always;
    border-top: 1px solid rgba(255, 255, 255, 0.1) !important;
  }

  .intro-grid {
    gap: 40px !important;
    width: 100% !important;
  }

  .intro-label {
    font-size: 12px !important;
    letter-spacing: 0.2em !important;
    color: #0066CC !important;
  }

  .intro-body {
    font-size: 17px !important;
    line-height: 1.7 !important;
  }

  .intro-body p {
    margin-bottom: 20px !important;
    color: #ffffff !important;
  }

  .intro-body p strong {
    color: #0066CC !important;
  }

  /* Conceptos optimizados para horizontal */
  .concepts {
    padding: 25px 40px !important;
    background: #000000 !important;
  }

  .section-header {
    margin-bottom: 20px !important;
    page-break-after: avoid;
  }

  .section-number {
    font-size: 56px !important;
    color: #0066CC !important;
  }

  .section-title {
    font-size: 22px !important;
    color: #ffffff !important;
  }

  /* Cada concepto en su propia página para mejor legibilidad */
  .concept {
    page-break-before: always !important;
    page-break-inside: avoid !important;
    break-inside: avoid !important;
    padding: 40px !important;
    margin: 0 !important;
    min-height: 18cm !important;
    display: flex !important;
    flex-direction: column !important;
    justify-content: center !important;
    background: #000000 !important;
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
  }

  /* Primer concepto sin page break */
  .concept:first-child {
    page-break-before: avoid !important;
  }

  .concept-letter {
    font-size: 72px !important;
    line-height: 1 !important;
    margin-bottom: 15px !important;
    color: #0066CC !important;
  }

  .concept-tag {
    font-size: 10px !important;
    margin-bottom: 8px !important;
    color: #0066CC !important;
  }

  .concept-term h3 {
    font-size: 28px !important;
    line-height: 1.2 !important;
    margin: 10px 0 15px !important;
    color: #ffffff !important;
  }

  .concept-body {
    font-size: 16px !important;
    line-height: 1.7 !important;
    color: #ffffff !important;
  }

  .concept-body p {
    margin-bottom: 15px !important;
  }

  .concept-body .example {
    font-size: 15px !important;
    padding: 15px !important;
    margin-top: 15px !important;
    line-height: 1.6 !important;
    background: #1a1a1a !important;
    border-left: 3px solid #0066CC !important;
    color: #b3b3b3 !important;
  }

  /* Autor */
  .author {
    padding: 30px 40px !important;
    page-break-before: always;
  }

  .author h3 {
    font-size: 20px !important;
    margin-bottom: 15px !important;
  }

  .author p {
    font-size: 14px !important;
    line-height: 1.6 !important;
  }

  .author-bio ul {
    font-size: 13px !important;
  }

  /* Sección de herramientas - 12 IAs en grid 4x3 optimizado para landscape */
  .stack {
    page-break-before: always !important;
    page-break-after: always !important;
    padding: 35px 50px !important;
    min-height: 18cm !important;
    display: flex !important;
    flex-direction: column !important;
    justify-content: center !important;
    background: #1a1a1a !important;
    border-top: 1px solid rgba(255, 255, 255, 0.1) !important;
  }

  .stack .section-header {
    margin-bottom: 15px !important;
  }

  .stack .section-header h2 {
    font-size: 24px !important;
    line-height: 1.15 !important;
    margin-bottom: 8px !important;
    color: #ffffff !important;
  }

  .stack .section-header h2 em {
    color: #0066CC !important;
  }

  .stack .section-number {
    font-size: 42px !important;
    margin-bottom: 8px !important;
    color: #0066CC !important;
  }

  .stack > .container > p {
    font-size: 12px !important;
    margin-bottom: 18px !important;
    color: #b3b3b3 !important;
  }

  .stack-grid {
    display: grid !important;
    grid-template-columns: repeat(4, 1fr) !important;
    gap: 14px 16px !important;
  }

  .stack-card {
    padding: 16px !important;
    page-break-inside: avoid !important;
    background: #000000 !important;
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
  }

  .stack-card::before {
    background: #0066CC !important;
  }

  .stack-num {
    font-size: 9px !important;
    margin-bottom: 6px !important;
    color: #0066CC !important;
  }

  .stack-card h4 {
    font-size: 16px !important;
    margin: 4px 0 6px 0 !important;
    line-height: 1.15 !important;
    color: #ffffff !important;
  }

  .stack-card .use {
    font-size: 9px !important;
    margin-bottom: 8px !important;
    color: #b3b3b3 !important;
  }

  .stack-card p {
    font-size: 10px !important;
    line-height: 1.35 !important;
    margin: 0 !important;
    color: #ffffff !important;
  }

  /* Sección de autor - slide completa con foto */
  .author {
    page-break-before: always !important;
    padding: 50px 70px !important;
    min-height: 18cm !important;
    display: flex !important;
    align-items: center !important;
    background: #1a1a1a !important;
    border-top: 1px solid rgba(255, 255, 255, 0.1) !important;
  }

  .author-grid {
    display: grid !important;
    grid-template-columns: 240px 1fr !important;
    gap: 50px !important;
    align-items: start !important;
  }

  .author-photo {
    page-break-inside: avoid !important;
  }

  .author-img {
    width: 100% !important;
    height: auto !important;
    border-radius: 8px !important;
    border: 2px solid #0066CC !important;
  }

  .author-content .label {
    font-size: 10px !important;
    margin-bottom: 12px !important;
    color: #0066CC !important;
  }

  .author-content h3 {
    font-size: 36px !important;
    margin-bottom: 12px !important;
    line-height: 1 !important;
    color: #ffffff !important;
  }

  .author-content h3 em {
    color: #0066CC !important;
  }

  .author-content .role {
    font-size: 13px !important;
    margin-bottom: 20px !important;
    line-height: 1.5 !important;
    color: #b3b3b3 !important;
  }

  .credentials {
    display: grid !important;
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 8px 20px !important;
    margin-bottom: 24px !important;
    padding-bottom: 24px !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1) !important;
  }

  .credentials li {
    font-size: 11px !important;
    gap: 8px !important;
    color: #ffffff !important;
  }

  .credentials li::before {
    width: 4px !important;
    height: 4px !important;
    background: #0066CC !important;
  }

  .author-bio-text p {
    font-size: 12px !important;
    line-height: 1.5 !important;
    margin-bottom: 12px !important;
    color: #ffffff !important;
  }

  .clients-label {
    font-size: 10px !important;
    margin-top: 20px !important;
    margin-bottom: 12px !important;
    color: #b3b3b3 !important;
  }

  .clients {
    display: flex !important;
    flex-wrap: wrap !important;
    gap: 8px !important;
  }

  .client-pill {
    padding: 6px 12px !important;
    font-size: 10px !important;
    border-radius: 999px !important;
    background: #000000 !important;
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
    color: #ffffff !important;
  }

  /* Container */
  .container {
    max-width: 100% !important;
    padding: 0 !important;
  }
}

@keyframes slideIn {
  from { transform: translateX(400px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* ============================================================
   LEAD FORM MODAL — Captura de datos para descarga de guía
   ============================================================ */
.lead-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 999999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(0, 0, 0, 0.85);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  animation: leadFade 0.25s ease;
}
.lead-modal-overlay[hidden] { display: none; }

@keyframes leadFade {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.lead-modal-card {
  position: relative;
  width: 100%;
  max-width: 460px;
  padding: 44px 40px 36px;
  background: #0d0d0d;
  border: 1px solid var(--gray-line);
  border-radius: 16px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6);
  animation: leadPop 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes leadPop {
  from { opacity: 0; transform: translateY(16px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.lead-modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  border-radius: 8px;
  color: #888;
  font-size: 26px;
  line-height: 1;
  cursor: pointer;
  transition: color 0.2s ease, background 0.2s ease;
}
.lead-modal-close:hover { color: var(--paper); background: rgba(255, 255, 255, 0.08); }

.lead-modal-header { margin-bottom: 26px; }

.lead-modal-title {
  font-family: var(--display);
  font-size: 27px;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--paper);
  margin: 0 0 8px;
}

.lead-modal-sub {
  font-size: 15px;
  line-height: 1.5;
  color: var(--gray-text);
  margin: 0;
}

.lead-field { margin-bottom: 18px; }

.lead-field label {
  display: block;
  margin-bottom: 8px;
  font-size: 13px;
  font-weight: 500;
  color: #cccccc;
}

.lead-field input {
  width: 100%;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 10px;
  color: var(--paper);
  font-family: var(--body);
  font-size: 15px;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.lead-field input::placeholder { color: #555555; }
.lead-field input:focus {
  outline: none;
  border-color: var(--mint);
  background: rgba(0, 102, 204, 0.06);
}
.lead-field input.error { border-color: var(--coral); }

.lead-error {
  margin: 0 0 14px;
  font-size: 13px;
  color: var(--coral);
}
.lead-error[hidden] { display: none; }

.lead-submit {
  width: 100%;
  padding: 16px;
  background: var(--mint);
  border: none;
  border-radius: 999px;
  color: var(--paper);
  font-family: var(--body);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.15s ease;
}
.lead-submit:hover { background: var(--mint-soft); }
.lead-submit:active { transform: translateY(1px); }
.lead-submit:disabled { opacity: 0.6; cursor: not-allowed; }

.lead-privacy {
  margin: 16px 0 0;
  font-size: 11px;
  line-height: 1.5;
  text-align: center;
  color: #666666;
}

/* ----- Estado de éxito ----- */
.lead-success { text-align: center; padding: 8px 0; }
.lead-success[hidden] { display: none; }

.lead-success-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--mint);
  border-radius: 50%;
  color: var(--paper);
  font-size: 30px;
}

.lead-success-title {
  font-family: var(--display);
  font-size: 24px;
  font-weight: 500;
  color: var(--paper);
  margin: 0 0 12px;
}

.lead-success-text {
  font-size: 15px;
  line-height: 1.6;
  color: var(--gray-text);
  margin: 0 0 24px;
}
.lead-success-text strong { color: var(--mint); }

.lead-success-btn {
  display: inline-block;
  padding: 14px 32px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 999px;
  color: var(--paper);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.lead-success-btn:hover { border-color: var(--mint); color: var(--mint); }

@media (max-width: 480px) {
  .lead-modal-card { padding: 38px 24px 30px; }
  .lead-modal-title { font-size: 23px; }
}