/* ==========================================================================
   MÉTODO MAPA — Landing page
   CSS puro, sin frameworks. Organizado en bloques:
   1. Tokens y reset
   2. Utilidades y layout
   3. Botones
   4. Header
   5. Hero + mockup 3D del libro
   6. Secciones genéricas
   7. Cards (problema / sí / no)
   8. Flujo del método
   9. Lista con checks
   10. Testimonio
   11. Precio
   12. Accordion FAQ
   13. Footer
   14. Animaciones (scroll reveal)
   15. Responsive
   ========================================================================== */

/* ==========================================================================
   1. TOKENS Y RESET
   ========================================================================== */

:root {
  /* Color — monocromo de alto contraste + un solo acento */
  --ink: #111318;
  --ink-2: #1c1f26;
  --ink-soft: #3f434e;
  --gray: #6b7280;
  --gray-light: #9ca3af;
  --line: #e6e7ec;
  --line-dark: #2a2d38;
  --paper: #ffffff;
  --paper-soft: #fafafb;
  --paper-alt: #f6f7f9;

  --accent: #2952e3;
  --accent-hover: #1f43c4;
  --accent-soft: #eef1fd;

  --ok: #0f7a4d;
  --ok-soft: #eef8f3;
  --danger: #b3261e;

  /* Tipografía */
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;

  /* Espaciado */
  --space-section: 120px;
  --radius: 12px;
  --radius-lg: 18px;

  /* Sombras — sutiles, estilo Stripe/Linear */
  --shadow-sm: 0 1px 2px rgba(17, 19, 24, .04), 0 1px 3px rgba(17, 19, 24, .06);
  --shadow-md: 0 4px 12px rgba(17, 19, 24, .06), 0 2px 4px rgba(17, 19, 24, .04);
  --shadow-lg: 0 24px 48px -12px rgba(17, 19, 24, .18);

  /* Transiciones */
  --ease: cubic-bezier(.16, 1, .3, 1);
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3 { margin: 0; line-height: 1.15; letter-spacing: -.02em; font-weight: 700; }
p { margin: 0 0 1em; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img { max-width: 100%; height: auto; display: block; }
strong { font-weight: 600; }

/* Foco visible y accesible en toda la página */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Respetar la preferencia de movimiento reducido del sistema */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}

/* ==========================================================================
   2. UTILIDADES Y LAYOUT
   ========================================================================== */

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 32px;
}

.container-narrow { max-width: 760px; }

.section { padding: var(--space-section) 0; }

.section-alt { background: var(--paper-alt); }

.section-dark {
  background: var(--ink);
  color: #fff;
}
.section-dark .section-lead { color: #b6bccd; }

.section-head {
  max-width: 680px;
  margin-bottom: 64px;
}

.section-head-sub { margin-top: 96px; }

.section-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  margin-bottom: 20px;
}

.section-lead {
  font-size: 19px;
  color: var(--ink-soft);
  margin: 0;
}

/* Etiqueta pequeña que encabeza cada sección */
.eyebrow {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 16px;
}
.eyebrow-light { color: #7d9bff; }
.eyebrow-muted { color: var(--gray); }

/* Layout de dos columnas (sección "Qué incluye") */
.split {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 80px;
  align-items: start;
}
.split-text .section-title { margin-bottom: 20px; }
.split-text .section-lead { margin-bottom: 32px; }

/* ==========================================================================
   3. BOTONES
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -.01em;
  padding: 12px 22px;
  border-radius: 10px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color .2s var(--ease),
              color .2s var(--ease),
              border-color .2s var(--ease),
              transform .2s var(--ease),
              box-shadow .2s var(--ease);
  white-space: nowrap;
}

.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--ink);
  color: #fff;
  box-shadow: var(--shadow-md);
}
.btn-primary:hover { background: var(--ink-2); box-shadow: var(--shadow-lg); }

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--ink); background: var(--paper-soft); }

/* Botón invertido, para usar sobre fondo oscuro */
.btn-invert {
  background: #fff;
  color: var(--ink);
}
.btn-invert:hover { background: #eef1f7; }

.btn-sm  { padding: 9px 16px;  font-size: 14px; }
.btn-lg  { padding: 15px 28px; font-size: 16px; }
.btn-xl  { padding: 18px 32px; font-size: 17px; border-radius: 12px; }
.btn-block { display: flex; width: 100%; }

/* ==========================================================================
   4. HEADER
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .82);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease);
}

/* Clase que agrega el JS al hacer scroll */
.site-header.is-scrolled {
  border-bottom-color: var(--line);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  height: 68px;
}

.logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; }

/* Isotipo de MAPA Labs en el header */
.logo-mark {
  width: auto;
  height: 24px;
  display: block;
  flex: none;
}

/* Jerarquía de marca: MAPA Labs (marca) sobre Método MAPA (metodología) */
.logo-stack { display: flex; flex-direction: column; line-height: 1.15; }
.logo-text { font-size: 15.5px; letter-spacing: -.02em; }
.logo-sub {
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--gray);
}

.header-nav { display: flex; gap: 30px; }
.header-nav a {
  font-size: 14.5px;
  font-weight: 500;
  color: var(--ink-soft);
  transition: color .2s var(--ease);
}
.header-nav a:hover { color: var(--ink); }

/* ==========================================================================
   5. HERO + MOCKUP 3D
   ========================================================================== */

.hero {
  padding: 110px 0 130px;
  overflow: hidden;
  /* Fondo muy sutil, sin gradientes exagerados */
  background:
    radial-gradient(900px 460px at 78% 12%, rgba(41, 82, 227, .05), transparent 70%),
    var(--paper);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 72px;
  align-items: center;
}

.hero-content { min-width: 0; }

.book-cover-mid { margin-top: auto; margin-bottom: auto; }

.hero-title {
  font-size: clamp(38px, 5.4vw, 62px);
  font-weight: 800;
  letter-spacing: -.035em;
  line-height: 1.05;
  margin-bottom: 26px;
}

.hero-subtitle {
  font-size: 19.5px;
  line-height: 1.62;
  color: var(--ink-soft);
  max-width: 560px;
  margin-bottom: 36px;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 40px; }

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  font-size: 14.5px;
  color: var(--gray);
}
.hero-meta li { display: inline-flex; align-items: center; gap: 8px; }
.dot { width: 5px; height: 5px; border-radius: 50%; background: var(--accent); }

/* --- Mockup 3D del ebook, hecho solo con CSS transforms --- */

.hero-visual { display: flex; justify-content: center; perspective: 1800px; }

.book-scene { position: relative; transform-style: preserve-3d; }

.book {
  /* --book-w controla ancho y posición del canto de páginas a la vez,
     para que el mockup se reescale bien en mobile. */
  --book-w: 300px;
  position: relative;
  width: var(--book-w);
  height: 424px;
  transform-style: preserve-3d;
  /* Rotación inicial que da la sensación de volumen */
  transform: rotateY(-26deg) rotateX(6deg) rotateZ(-1deg);
  transition: transform .9s var(--ease);
  animation: book-float 7s ease-in-out infinite;
}

.hero-visual:hover .book {
  transform: rotateY(-14deg) rotateX(3deg) rotateZ(0deg) scale(1.03);
  animation-play-state: paused;
}

/* Tapa del libro — replica la portada del PDF */
.book-cover {
  position: absolute;
  inset: 0;
  background: var(--ink);
  border-radius: 3px 8px 8px 3px;
  padding: 30px 26px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  color: #fff;
  box-shadow:
    inset 2px 0 0 rgba(255, 255, 255, .06),
    var(--shadow-lg);
  transform: translateZ(22px);
}

.book-cover-top { display: flex; justify-content: space-between; align-items: flex-start; }

.book-badge {
  font-size: 7.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: #9aa3c0;
  border: 1px solid #3a3f52;
  border-radius: 20px;
  padding: 4px 9px;
}

/* Isotipo en la tapa del mockup (versión clara, sobre fondo oscuro) */
.book-mark {
  width: auto;
  height: 17px;
  display: block;
  flex: none;
  opacity: .95;
}

.book-eyebrow {
  display: block;
  font-size: 8.5px;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: #7d9bff;
  margin-bottom: 10px;
}
.book-eyebrow::before { content: "— "; }

.book-title {
  font-size: 38px;
  font-weight: 800;
  line-height: .98;
  letter-spacing: -.03em;
  margin: 0 0 14px;
}

.book-sub {
  font-size: 10px;
  line-height: 1.5;
  color: #c2c7d8;
  margin: 0 0 14px;
}

/* Faja del mockup, réplica del sello de la portada real */
.book-seal {
  display: inline-block;
  padding: 5px 9px;
  border: 1px solid #3a3f52;
  border-radius: 2px;
  font-size: 6.5px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: #c7cbdc;
}

.book-cover-bottom {
  display: flex;
  justify-content: space-between;
  font-size: 8px;
  color: #7d84a0;
  border-top: 1px solid #2a2d3a;
  padding-top: 12px;
}

/* Lomo del libro */
.book-spine {
  position: absolute;
  top: 0; left: 0;
  width: 44px;
  height: 100%;
  background: linear-gradient(90deg, #05070c, #191c25);
  transform: rotateY(90deg) translateZ(-22px);
  transform-origin: left center;
  border-radius: 3px 0 0 3px;
}

/* Canto de las páginas */
.book-pages {
  position: absolute;
  top: 4px; right: 0;
  width: 40px;
  height: calc(100% - 8px);
  background: repeating-linear-gradient(
    to right,
    #ffffff 0px, #ffffff 1px,
    #e2e4ea 1px, #e2e4ea 2px
  );
  transform: rotateY(90deg) translateZ(calc(var(--book-w) - 20px));
  transform-origin: right center;
  border-radius: 2px;
}

/* Sombra proyectada en el piso */
.book-shadow {
  position: absolute;
  left: 50%;
  bottom: -46px;
  width: 300px;
  height: 40px;
  transform: translateX(-50%) rotateX(72deg);
  background: radial-gradient(ellipse, rgba(17, 19, 24, .3), transparent 68%);
  filter: blur(14px);
  animation: shadow-pulse 7s ease-in-out infinite;
}

@keyframes book-float {
  0%, 100% { translate: 0 0; }
  50%      { translate: 0 -16px; }
}

@keyframes shadow-pulse {
  0%, 100% { opacity: .55; scale: 1; }
  50%      { opacity: .3;  scale: .9; }
}

/* ==========================================================================
   6. CARDS
   ========================================================================== */

.cards-grid {
  display: grid;
  gap: 20px;
}
.cards-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px 28px;
  transition: transform .25s var(--ease),
              box-shadow .25s var(--ease),
              border-color .25s var(--ease);
}

.card:hover {
  transform: translateY(-3px);
  border-color: #d2d5de;
  box-shadow: var(--shadow-md);
}

.card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
}

.card p {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--gray);
  margin: 0;
}

/* Número grande en las cards de "problema" */
.card-num {
  display: block;
  font-size: 13px;
  font-weight: 800;
  color: var(--line);
  margin-bottom: 16px;
  letter-spacing: .04em;
}
.card-problem:hover .card-num { color: var(--accent); transition: color .25s var(--ease); }

/* Ícono circular de las cards sí/no */
.card-icon {
  display: grid;
  place-items: center;
  width: 30px; height: 30px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 16px;
}
.card-yes { background: var(--paper); }
.card-yes .card-icon { background: var(--ok-soft); color: var(--ok); }
.card-no  .card-icon { background: #f3f4f6; color: var(--gray); }
.card-no  { background: var(--paper); }

.section-alt .card { background: #fff; }

/* ==========================================================================
   7. FLUJO DEL MÉTODO
   ========================================================================== */

.flow {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  counter-reset: flow;
}

.flow-step {
  position: relative;
  background: rgba(255, 255, 255, .04);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  padding: 26px 22px;
  transition: background-color .25s var(--ease), border-color .25s var(--ease);
}

.flow-step:hover {
  background: rgba(255, 255, 255, .07);
  border-color: #3d4252;
}

/* Flecha entre pasos (solo desktop) */
.flow-step:not(:last-child)::after {
  content: "→";
  position: absolute;
  right: -16px;
  top: 50%;
  transform: translate(50%, -50%);
  color: var(--accent);
  font-size: 17px;
  font-weight: 700;
  z-index: 2;
}

.flow-index {
  display: block;
  font-size: 12px;
  font-weight: 800;
  color: #7d9bff;
  letter-spacing: .1em;
  margin-bottom: 14px;
}

.flow-step h3 {
  font-size: 18px;
  color: #fff;
  margin-bottom: 8px;
}

.flow-step p {
  font-size: 14px;
  line-height: 1.55;
  color: #a2a9bd;
  margin: 0;
}

.flow-note {
  margin: 40px 0 0;
  font-size: 16px;
  color: #b6bccd;
  text-align: center;
}
.flow-note strong { color: #fff; }

/* ==========================================================================
   8. LISTA CON CHECKS
   ========================================================================== */

.check-list { display: grid; gap: 2px; }

.check-list li {
  position: relative;
  padding: 16px 0 16px 34px;
  border-bottom: 1px solid var(--line);
}
.check-list li:last-child { border-bottom: none; }

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 16px;
  width: 20px; height: 20px;
  display: grid; place-items: center;
  border-radius: 6px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
}

.check-list strong {
  display: block;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 2px;
}

.check-list span {
  font-size: 14.5px;
  color: var(--gray);
  line-height: 1.55;
}

/* ==========================================================================
   9. QUÉ TE LLEVÁS AL TERMINAR
   ========================================================================== */

.takeaways {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px 56px;
}

.takeaway {
  position: relative;
  padding: 28px 0;
  border-top: 1px solid var(--line);
}

/* La primera fila no lleva borde superior doble */
.takeaway:nth-child(-n+2) { border-top: none; padding-top: 0; }

.takeaway-num {
  display: block;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .08em;
  color: var(--accent);
  margin-bottom: 12px;
}

.takeaway h3 {
  font-size: 18.5px;
  font-weight: 700;
  letter-spacing: -.015em;
  margin-bottom: 10px;
}

.takeaway p {
  font-size: 15.5px;
  line-height: 1.65;
  color: var(--gray);
  margin: 0;
  max-width: 44ch;
}

/* ==========================================================================
   10. PRECIO
   ========================================================================== */

.pricing { text-align: center; }

/* Logo completo (versión clara) encabezando el bloque de precio */
.pricing-logo {
  width: 148px;
  height: auto;
  margin: 0 auto 28px;
  display: block;
}

.pricing .section-title { margin-bottom: 16px; }

.pricing-desc {
  font-size: 17px;
  color: #b6bccd;
  max-width: 520px;
  margin: 0 auto 42px;
}

/* Ancla de precio: compara contra la alternativa real, no contra cero */
.anchor {
  max-width: 540px;
  margin: 0 auto 34px;
  text-align: left;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  overflow: hidden;
}

.anchor-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 16px 20px;
}

.anchor-row-alt {
  border-bottom: 1px solid var(--line-dark);
  background: rgba(255, 255, 255, .02);
}

.anchor-label {
  font-size: 14.5px;
  line-height: 1.45;
  color: #9aa1b4;
}

.anchor-value {
  flex: none;
  font-size: 15px;
  font-weight: 600;
  color: #8f96a9;
  text-align: right;
  white-space: nowrap;
}

.anchor-row-alt .anchor-value { text-decoration: line-through; }

.anchor-value-ours { color: #fff; }

.anchor-row:not(.anchor-row-alt) .anchor-label { color: #d5d8e6; }

/* La línea que vuelve verificable el ancla: experiencia propia, no marketing */
.anchor-note {
  max-width: 540px;
  margin: -20px auto 32px;
  font-size: 13.5px;
  line-height: 1.6;
  color: #8f96a9;
  text-align: left;
}

@media (max-width: 640px) {
  .anchor-row { flex-direction: column; align-items: flex-start; gap: 6px; padding: 14px 16px; }
  .anchor-value { text-align: left; }
}

.price-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  margin-bottom: 34px;
}

/* Precio anterior tachado y fecha de vigencia */
.price-old {
  font-size: 26px;
  font-weight: 600;
  color: #6f778c;
  text-decoration: line-through;
  text-decoration-thickness: 2px;
}

.price-deadline {
  margin: -18px auto 30px;
  font-size: 15px;
  color: #b6bccd;
}
.price-deadline strong { color: #fff; font-weight: 600; }

.price {
  font-size: clamp(52px, 8vw, 78px);
  font-weight: 800;
  letter-spacing: -.04em;
  line-height: 1;
  color: #fff;
}

.price-currency {
  font-size: 14px;
  color: #8f96a9;
  letter-spacing: .02em;
}

.pricing #buy-button { max-width: 380px; margin: 0 auto; }

.pricing-perks {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 28px;
  margin-top: 28px;
  font-size: 14px;
  color: #9aa1b4;
}
.pricing-perks li { display: inline-flex; align-items: center; gap: 8px; }
.pricing-perks li::before {
  content: "✓";
  color: #7d9bff;
  font-weight: 700;
}

/* Texto interno del botón de compra (lo cambia el JS mientras carga) */
.btn-label { display: inline-block; }

/* Estado "abriendo el pago…" del botón de compra */
#buy-button.is-loading {
  opacity: .72;
  cursor: progress;
  pointer-events: none;
}

.buy-error {
  max-width: 380px;
  margin: 14px auto 0;
  padding: 10px 14px;
  border-radius: var(--radius);
  background: rgba(179, 38, 30, .14);
  border: 1px solid rgba(240, 149, 149, .35);
  color: #f5c4c4;
  font-size: 14px;
}

.pricing-note {
  margin: 26px 0 0;
  font-size: 13.5px;
  color: #8f96a9;
  letter-spacing: .02em;
}

/* Enlaces legales todavía no publicados: se ven, pero no engañan */
.footer-links a[aria-disabled="true"] { color: var(--gray); cursor: default; }
.footer-links a[aria-disabled="true"]:hover { color: var(--gray); }

/* ==========================================================================
   11. ACCORDION FAQ
   ========================================================================== */

.accordion { border-top: 1px solid var(--line); }

.accordion-item { border-bottom: 1px solid var(--line); }

.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 0;
  background: none;
  border: none;
  font-family: inherit;
  font-size: 17.5px;
  font-weight: 600;
  letter-spacing: -.015em;
  color: var(--ink);
  text-align: left;
  cursor: pointer;
  transition: color .2s var(--ease);
}

.accordion-trigger:hover { color: var(--accent); }

/* Ícono + / − construido con dos pseudo-elementos */
.accordion-icon {
  position: relative;
  width: 16px; height: 16px;
  flex: none;
}
.accordion-icon::before,
.accordion-icon::after {
  content: "";
  position: absolute;
  background: var(--ink);
  border-radius: 2px;
  transition: transform .3s var(--ease), background-color .2s var(--ease);
}
.accordion-icon::before { top: 7px; left: 0; width: 16px; height: 2px; }
.accordion-icon::after  { left: 7px; top: 0; width: 2px; height: 16px; }

.accordion-trigger:hover .accordion-icon::before,
.accordion-trigger:hover .accordion-icon::after { background: var(--accent); }

/* Al abrirse, la barra vertical rota y desaparece → queda el signo menos */
.accordion-trigger[aria-expanded="true"] .accordion-icon::after {
  transform: rotate(90deg);
  opacity: 0;
}

/* El panel se anima con max-height, controlado desde JS */
.accordion-panel {
  overflow: hidden;
  max-height: 0;
  transition: max-height .38s var(--ease);
}

.accordion-panel p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink-soft);
  margin: 0;
  padding: 0 48px 26px 0;
}

/* ==========================================================================
   12. CTA FINAL
   ========================================================================== */

.final-cta { text-align: center; padding: 100px 0 120px; }
.final-cta .section-lead { margin: 0 auto 34px; max-width: 520px; }

/* ==========================================================================
   12b. PÁGINA DE GRACIAS (post-compra)
   ========================================================================== */

.thanks { text-align: center; padding-top: 80px; }

.thanks-badge {
  width: 56px; height: 56px;
  display: grid; place-items: center;
  margin: 0 auto 28px;
  border-radius: 50%;
  background: var(--ok-soft);
  color: var(--ok);
  font-size: 24px;
  font-weight: 700;
}

.thanks .section-lead { margin: 0 auto 36px; max-width: 560px; }

.thanks-note {
  margin: 18px auto 0;
  max-width: 460px;
  font-size: 14px;
  color: var(--gray);
}

.thanks-next {
  margin-top: 72px;
  padding-top: 48px;
  border-top: 1px solid var(--line);
  text-align: left;
}

.thanks-next h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 20px;
  text-align: center;
}

/* Pasos numerados de la página de gracias */
.visual-steps { counter-reset: step; }

.visual-steps li {
  position: relative;
  counter-increment: step;
  padding: 16px 0 16px 44px;
  border-bottom: 1px solid var(--line);
}
.visual-steps li:last-child { border-bottom: none; }

.visual-steps li::before {
  content: counter(step);
  position: absolute;
  left: 0; top: 17px;
  width: 26px; height: 26px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--ink);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
}

.visual-steps strong { display: block; font-size: 16px; margin-bottom: 3px; }
.visual-steps span { font-size: 14.5px; color: var(--gray); line-height: 1.55; }

.thanks-help {
  margin-top: 48px;
  padding: 22px 24px;
  background: var(--paper-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-align: left;
}
.thanks-help p { margin: 0; font-size: 15px; color: var(--ink-soft); }
.thanks-help a { color: var(--accent); font-weight: 500; }

.thanks-back {
  display: inline-block;
  margin-top: 48px;
  font-size: 14.5px;
  color: var(--gray);
  transition: color .2s var(--ease);
}
.thanks-back:hover { color: var(--ink); }

.site-footer .footer-bottom a { color: var(--gray); }
.site-footer .footer-bottom a:hover { color: var(--accent); }

@media (max-width: 640px) {
  .thanks { padding-top: 48px; }
  .thanks-next { margin-top: 52px; padding-top: 36px; }
  .thanks .btn-xl { width: 100%; }
}

/* ==========================================================================
   13. FOOTER
   ========================================================================== */

.site-footer {
  background: var(--paper-alt);
  border-top: 1px solid var(--line);
  padding: 72px 0 32px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 56px;
  padding-bottom: 48px;
}

/* Logo completo en el pie */
.footer-logo { display: inline-block; }
.footer-logo img {
  width: 190px;
  height: auto;
}

.footer-brand p {
  margin: 18px 0 0;
  font-size: 14.5px;
  color: var(--gray);
  max-width: 260px;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.footer-links h3 {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 16px;
}

.footer-links a {
  display: block;
  font-size: 14.5px;
  color: var(--ink-soft);
  padding: 5px 0;
  transition: color .2s var(--ease);
  word-break: break-word;
}
.footer-links a:hover { color: var(--accent); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  border-top: 1px solid var(--line);
  padding-top: 26px;
}
.footer-bottom p {
  margin: 0;
  font-size: 13.5px;
  color: var(--gray);
}

/* ==========================================================================
   14. SCROLL REVEAL (activado por Intersection Observer)
   ========================================================================== */

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
  will-change: opacity, transform;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* Efecto cascada: cada card entra un poco después que la anterior.
   El índice lo asigna el JS con la variable --i. */
.reveal[style*="--i"] {
  transition-delay: calc(var(--i) * 70ms);
}

/* Si el usuario tiene JS desactivado, todo debe verse igual */
.no-js .reveal { opacity: 1; transform: none; }

/* ==========================================================================
   15. RESPONSIVE
   ========================================================================== */

/* --- Notebooks --- */
@media (max-width: 1080px) {
  :root { --space-section: 96px; }
  .cards-4 { grid-template-columns: repeat(2, 1fr); }
  .flow { grid-template-columns: repeat(2, 1fr); }
  .flow-step:not(:last-child)::after { display: none; }
  .split { grid-template-columns: 1fr; gap: 48px; }
  .takeaways { gap: 2px 36px; }
}

/* --- Tablet --- */
@media (max-width: 900px) {
  .hero { padding: 72px 0 90px; }
  .hero-grid { grid-template-columns: 1fr; gap: 64px; }
  .hero-subtitle { max-width: none; }
  .header-nav { display: none; }
  .footer-inner { grid-template-columns: 1fr; gap: 40px; }
}

/* --- Mobile --- */
@media (max-width: 640px) {
  :root { --space-section: 72px; }

  body { font-size: 16px; }

  .container { padding: 0 20px; }

  .hero { padding: 56px 0 72px; }
  .hero-title { font-size: 34px; letter-spacing: -.03em; }
  .hero-subtitle { font-size: 17px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }

  /* Mockup más chico y menos rotado en pantallas angostas */
  .book { --book-w: 210px; height: 297px; transform: rotateY(-18deg) rotateX(5deg); }
  .book-mark { height: 13px; }
  .pricing-logo { width: 124px; margin-bottom: 22px; }
  .book-title { font-size: 27px; }
  .book-sub { font-size: 8px; }
  .book-cover { padding: 20px 18px; }
  .book-shadow { width: 210px; bottom: -34px; }

  .section-head { margin-bottom: 40px; }
  .section-head-sub { margin-top: 64px; }
  .section-lead { font-size: 17px; }

  .cards-4 { grid-template-columns: 1fr; }
  .flow { grid-template-columns: 1fr; }

  .takeaways { grid-template-columns: 1fr; gap: 0; }
  .takeaway { padding: 24px 0; }
  .takeaway:nth-child(2) { border-top: 1px solid var(--line); padding-top: 24px; }
  .takeaway h3 { font-size: 17px; }
  .takeaway p { font-size: 15px; }

  .accordion-trigger { font-size: 16px; gap: 16px; }
  .accordion-panel p { padding-right: 0; }

  .footer-links { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: 8px; }

  .header-cta { display: none; }
}