/* ==========================================================================
   TOKENS
   ========================================================================== */
:root{
  --bg:            #F5F8FB;
  --surface:       #FFFFFF;
  --surface-alt:   #EDF3F8;
  --ink:           #10233F;
  --ink-soft:      #51637C;
  --celeste:       #2F9BDB;
  --celeste-dark:  #1B7AB3;
  --celeste-pale:  #DCEEF9;
  --growth:        #278C63;
  --gold:          #E2A13B;
  --gold-dark:     #C7852A;
  --border:        #DCE4EC;

  --font-display: 'Fraunces', Georgia, serif;
  --font-body:    'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:    'JetBrains Mono', 'Courier New', monospace;
}

*{ box-sizing: border-box; }

html{ scroll-behavior: smooth; }

body{
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4{
  font-family: var(--font-display);
  color: var(--ink);
  margin: 0;
}

p{ color: var(--ink-soft); }

a{ text-decoration: none; color: inherit; }

.container{ max-width: 1160px; }

.eyebrow{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--celeste-dark);
  font-weight: 600;
  margin: 0;
}
.eyebrow-light{ color: rgba(255,255,255,0.85); }

.section-title{
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.7rem, 2.6vw, 2.35rem);
  line-height: 1.22;
  color: var(--ink);
}

.section-lead{
  font-size: 1.05rem;
  color: var(--ink-soft);
  max-width: 640px;
}

section{ padding: 5.5rem 0; }

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn{ border-radius: 8px; }

.btn-celeste{
  background: var(--celeste);
  border: 1px solid var(--celeste);
  color: #fff;
  transition: background .18s ease, transform .18s ease, box-shadow .18s ease;
  box-shadow: 0 8px 20px -8px rgba(47,155,219,.55);
}
.btn-celeste:hover, .btn-celeste:focus{
  background: var(--celeste-dark);
  border-color: var(--celeste-dark);
  color: #fff;
  transform: translateY(-1px);
}

.btn-outline-nav{
  background: transparent;
  border: 1px solid var(--border);
  color: var(--ink);
}
.btn-outline-nav:hover{
  border-color: var(--celeste);
  color: var(--celeste-dark);
}

.btn-gold{
  background: var(--gold);
  border: 1px solid var(--gold);
  color: #201304;
  font-weight: 700;
  transition: background .18s ease, transform .18s ease;
  box-shadow: 0 10px 24px -10px rgba(226,161,59,.7);
}
.btn-gold:hover{
  background: var(--gold-dark);
  border-color: var(--gold-dark);
  color: #201304;
  transform: translateY(-1px);
}

/* ==========================================================================
   NAV
   ========================================================================== */
.site-nav{
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(245,248,251,0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}


.nav-links a{
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink-soft);
  transition: color .15s ease;
}
.nav-links a:hover{ color: var(--celeste-dark); }

/* ==========================================================================
   HERO
   ========================================================================== */
.hero{
  padding-top: 4.5rem;
  padding-bottom: 4.5rem;
  background:
    radial-gradient(60% 55% at 88% 8%, rgba(47,155,219,0.10), transparent),
    var(--bg);
}

.hero-title{
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.1rem, 4vw, 3.1rem);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.hero-subtitle{
  font-size: 1.08rem;
  color: var(--ink-soft);
  max-width: 540px;
}

.price-inline{ flex-wrap: wrap; }
.price-old{
  font-family: var(--font-mono);
  color: var(--ink-soft);
  text-decoration: line-through;
  font-size: 1.1rem;
}
.price-new{
  font-family: var(--font-mono);
  color: var(--growth);
  font-weight: 700;
  font-size: 2rem;
}
.badge-offer{
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--celeste-pale);
  color: var(--celeste-dark);
  padding: 0.35rem 0.6rem;
  border-radius: 999px;
  font-weight: 700;
}

.hero-trust li{
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.88rem;
  color: var(--ink-soft);
  font-weight: 500;
}
.hero-trust .dot{
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--growth);
  display: inline-block;
  flex-shrink: 0;
}

.cover-placeholder{
  aspect-ratio: 3/4;
  max-width: 380px;
  margin: 0 auto;
  background: var(--surface);
  border: 1.5px dashed var(--border);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
  box-shadow: 0 30px 60px -30px rgba(16,35,63,0.18);
}
.cover-placeholder span{
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ink-soft);
}

/* ==========================================================================
   AUDIENCE
   ========================================================================== */
.section-audience{
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  text-align: center;
}
.section-audience .section-lead{ margin: 0 auto; }

/* ==========================================================================
   LEDGER / ÍNDICE INTERACTIVO  (signature element)
   ========================================================================== */
.ledger{
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 40px 80px -50px rgba(16,35,63,0.25);
}

.ledger-tabs{
  background: var(--surface-alt);
  border-right: 1px solid var(--border);
  max-height: 560px;
  overflow-y: auto;
}

.ledger-tab{
  width: 100%;
  display: flex;
  align-items: center;
  gap: 0.9rem;
  text-align: left;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--border);
  padding: 0.95rem 1.2rem;
  cursor: pointer;
  transition: background .15s ease;
}
.ledger-tab:last-child{ border-bottom: 0; }
.ledger-tab:hover{ background: rgba(47,155,219,0.08); }

.ledger-tab.active{
  background: var(--surface);
  box-shadow: inset 3px 0 0 var(--celeste);
}
.ledger-tab.active .ledger-num{ color: var(--celeste-dark); }
.ledger-tab.active .ledger-label{ color: var(--ink); font-weight: 600; }

.ledger-num{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--ink-soft);
  min-width: 26px;
}
.ledger-label{
  font-size: 0.88rem;
  color: var(--ink-soft);
  font-weight: 500;
  line-height: 1.35;
}

.ledger-panel{
  position: relative;
  padding: 2.6rem 2.8rem;
  min-height: 340px;
  background:
    repeating-linear-gradient(
      to bottom,
      transparent,
      transparent 2.05rem,
      var(--border) 2.05rem,
      var(--border) calc(2.05rem + 1px)
    );
  background-position: 0 6.4rem;
}

.ledger-content{ display: none; }
.ledger-content.active{
  display: block;
  animation: fadeUp .35s ease;
}

.ledger-content-num{
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.8rem;
  color: #fff;
  background: var(--celeste);
  padding: 0.3rem 0.65rem;
  border-radius: 6px;
  margin-bottom: 1rem;
}

.ledger-content h3{
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.85rem;
}

.ledger-content p{
  font-size: 1.02rem;
  color: var(--ink-soft);
  max-width: 560px;
  margin: 0;
}

@keyframes fadeUp{
  from{ opacity: 0; transform: translateY(8px); }
  to{ opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   BENEFITS
   ========================================================================== */
.section-benefits{ background: var(--bg); }

.benefit-card{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.8rem 1.6rem;
  height: 100%;
  transition: transform .18s ease, box-shadow .18s ease;
}
.benefit-card:hover{
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -24px rgba(16,35,63,0.25);
}
.benefit-icon{
  color: var(--celeste);
  font-size: 1.1rem;
  margin-bottom: 0.9rem;
}
.benefit-card h3{
  font-family: var(--font-body);
  font-size: 1.02rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.benefit-card p{
  font-size: 0.92rem;
  margin: 0;
}

/* ==========================================================================
   PRICE
   ========================================================================== */
.section-price{
  background: linear-gradient(155deg, var(--ink) 0%, #16324F 100%);
}

.price-box{
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
  color: #fff;
}
.price-box-title{
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  color: #fff;
}
.price-box-lead{
  color: rgba(255,255,255,0.78);
  font-size: 1.02rem;
}

.price-old-lg{
  font-family: var(--font-mono);
  color: rgba(255,255,255,0.55);
  text-decoration: line-through;
  font-size: 1.3rem;
}
.price-new-lg{
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 3.4rem;
  color: #fff;
  line-height: 1.1;
}
.price-note{
  color: rgba(255,255,255,0.55);
  font-size: 0.82rem;
}

/* ==========================================================================
   FAQ
   ========================================================================== */
.section-faq{ background: var(--surface); }

.faq-accordion .accordion-item{
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--border);
  border-radius: 0;
}
.faq-accordion .accordion-button{
  background: transparent;
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  padding: 1.35rem 0;
  box-shadow: none;
}
.faq-accordion .accordion-button:not(.collapsed){
  color: var(--celeste-dark);
  background: transparent;
  box-shadow: none;
}
.faq-accordion .accordion-button::after{
  filter: hue-rotate(180deg) saturate(3);
}
.faq-accordion .accordion-body{
  padding: 0 0 1.5rem;
  color: var(--ink-soft);
  font-size: 0.98rem;
}

/* ==========================================================================
   FINAL CTA
   ========================================================================== */
.section-final-cta{
  background: var(--celeste-pale);
}
.section-final-cta h2{
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.5rem, 2.6vw, 2rem);
}
.section-final-cta p{
  max-width: 480px;
  margin: 0 auto;
  color: var(--ink-soft);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer{
  background: var(--ink);
  color: rgba(255,255,255,0.75);
  padding: 4.5rem 0 2.5rem;
  font-size: 0.92rem;
}

.logo-placeholder-footer{
  width: 168px; height: 46px;
}

.footer-tagline{
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  max-width: 280px;
}

.footer-heading{
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  margin-bottom: 1rem;
}

.social-links a{
  width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50%;
  color: rgba(255,255,255,0.85);
  transition: background .15s ease, border-color .15s ease;
}
.social-links a:hover{
  background: var(--celeste);
  border-color: var(--celeste);
}

.footer-links li{ margin-bottom: 0.6rem; }
.footer-links a{
  color: rgba(255,255,255,0.65);
  transition: color .15s ease;
}
.footer-links a:hover{ color: #fff; }

.footer-divider{
  border-color: rgba(255,255,255,0.15);
  margin: 0;
}

.footer-disclaimer{
  padding-top: 2rem;
}
.footer-disclaimer p{
  color: rgba(255,255,255,0.55);
  font-size: 0.82rem;
  line-height: 1.6;
  margin-bottom: 0.9rem;
}

.footer-bottom{
  border-top: 1px solid rgba(255,255,255,0.12);
  font-size: 0.82rem;
  color: rgba(255,255,255,0.5);
}

/* ==========================================================================
   MOBILE STICKY CTA
   ========================================================================== */
.mobile-sticky-cta{
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 50;
  background: var(--celeste);
  color: #fff;
  text-align: center;
  padding: 0.9rem 1rem;
  font-weight: 700;
  font-size: 0.95rem;
  box-shadow: 0 -10px 24px -12px rgba(16,35,63,0.35);
}
.mobile-sticky-cta span{ font-family: var(--font-mono); }

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 991.98px){
  section{ padding: 3.75rem 0; }
  .ledger{ grid-template-columns: 1fr; }
  .ledger-tabs{
    max-height: none;
    border-right: 0;
    border-bottom: 1px solid var(--border);
    display: flex;
    overflow-x: auto;
  }
  .ledger-tab{
    border-bottom: 0;
    border-right: 1px solid var(--border);
    white-space: nowrap;
    flex: 0 0 auto;
  }
  .ledger-tab.active{ box-shadow: inset 0 -3px 0 var(--celeste); }
  .ledger-label{ max-width: 200px; white-space: normal; }
  .ledger-panel{ padding: 2rem 1.4rem; }
  body{ padding-bottom: 3.4rem; }
}

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  .ledger-content.active{ animation: none; }
  .benefit-card, .btn{ transition: none; }
}

/* Focus visibility */
a:focus-visible, button:focus-visible{
  outline: 2px solid var(--celeste-dark);
  outline-offset: 2px;
}


.imagen-responsive {
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
}

.imagen-responsive img {
    width: 100%;
    height: auto;
    display: block;
}

@media (max-width: 991px) {
    .imagen-responsive {
        display:none;
    }
}