/* =========================================================
   HIPOTECA FÁCIL — Sistema de diseño
   Paleta: blanco / negro / verde oscuro. Minimalista, tipo
   Stripe/Apple. Bordes redondeados, animaciones suaves.
   ========================================================= */

/* ---------- 1. Tokens ---------- */
:root{
  /* Color */
  --white: #ffffff;
  --black: #0a0a0a;
  --ink-2: #171717;
  --green-900: #0b3d2e;   /* verde oscuro primario */
  --green-800: #0f4c39;
  --green-700: #14603f;
  --green-050: #eaf3ee;   /* verde muy suave para fondos */
  --green-100: #d9ebe1;
  --gray-050: #fafafa;
  --gray-100: #f2f2f0;
  --gray-200: #e6e5e1;
  --gray-400: #a3a29c;
  --gray-500: #78766f;
  --gray-700: #45443f;
  --danger: #b3261e;

  /* Tipografía */
  --font-display: 'Manrope', 'Segoe UI', system-ui, sans-serif;
  --font-body: 'Inter', 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;

  /* Radios */
  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 24px;
  --r-pill: 999px;

  /* Sombra */
  --shadow-sm: 0 1px 2px rgba(10,10,10,0.06), 0 1px 1px rgba(10,10,10,0.04);
  --shadow-md: 0 8px 24px rgba(10,10,10,0.08), 0 2px 6px rgba(10,10,10,0.05);
  --shadow-lg: 0 24px 60px rgba(10,10,10,0.12), 0 4px 12px rgba(10,10,10,0.06);

  /* Espaciado */
  --gutter: clamp(20px, 5vw, 64px);
  --max-w: 1180px;

  /* Movimiento */
  --ease: cubic-bezier(.22,.61,.36,1);
  --dur-fast: 160ms;
  --dur-med: 320ms;
}

/* ---------- 2. Reset ---------- */
*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin: 0;
  background: var(--white);
  color: var(--black);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg, canvas{ max-width: 100%; display: block; }
a{ color: inherit; text-decoration: none; }
button{ font: inherit; cursor: pointer; }
ul{ margin: 0; padding: 0; list-style: none; }
h1,h2,h3,h4,p{ margin: 0; }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

:focus-visible{
  outline: 2.5px solid var(--green-700);
  outline-offset: 2px;
  border-radius: 4px;
}

.container{
  max-width: var(--max-w);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.sr-only{
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

.skip-link{
  position: absolute; left: -999px; top: 0;
  background: var(--black); color: var(--white);
  padding: 12px 20px; z-index: 200; border-radius: 0 0 var(--r-sm) 0;
}
.skip-link:focus{ left: 0; }

/* ---------- 3. Tipografía ---------- */
h1, h2, h3{ font-family: var(--font-display); font-weight: 700; letter-spacing: -0.02em; color: var(--black); }
.eyebrow{
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--green-800);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
}
.eyebrow::before{ content:""; width: 6px; height: 6px; border-radius: 50%; background: var(--green-700); }

h1{ font-size: clamp(36px, 5.4vw, 64px); line-height: 1.04; }
h2{ font-size: clamp(28px, 3.6vw, 42px); line-height: 1.1; }
h3{ font-size: clamp(19px, 2.2vw, 23px); line-height: 1.25; }
.lede{ font-size: clamp(17px, 1.6vw, 20px); color: var(--gray-700); max-width: 56ch; }
.mono-num{ font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

/* ---------- 4. Botones ---------- */
.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: var(--r-pill);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15.5px;
  border: 1.5px solid transparent;
  transition: transform var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
  white-space: nowrap;
}
.btn-primary{ background: var(--green-900); color: var(--white); box-shadow: var(--shadow-sm); }
.btn-primary:hover{ background: var(--black); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-primary:active{ transform: translateY(0); }
.btn-ghost{ background: transparent; color: var(--black); border-color: var(--gray-200); }
.btn-ghost:hover{ border-color: var(--black); }
.btn-sm{ padding: 10px 18px; font-size: 13.5px; }
.btn-block{ width: 100%; }
.btn[disabled]{ opacity: 0.45; cursor: not-allowed; transform: none !important; }

/* ---------- 5. Header ---------- */
.site-header{
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.82);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--gray-200);
}
.site-header .inner{
  max-width: var(--max-w); margin: 0 auto; padding: 0 var(--gutter);
  height: 68px; display: flex; align-items: center; justify-content: space-between;
}
.brand{ display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 700; font-size: 18px; }
.brand .mark{ width: 30px; height: 30px; border-radius: 9px; background: var(--green-900); display: grid; place-items: center; }
.brand .mark svg{ width: 16px; height: 16px; }
.nav-links{ display: flex; gap: 32px; }
.nav-links a{ font-size: 14.5px; font-weight: 500; color: var(--gray-700); transition: color var(--dur-fast) var(--ease); }
.nav-links a:hover{ color: var(--black); }
.header-cta{ display: flex; align-items: center; gap: 14px; }
.nav-toggle{ display: none; background: none; border: none; padding: 8px; }
@media (max-width: 860px){
  .nav-links{ display: none; }
  .nav-toggle{ display: inline-flex; }
}

/* ---------- 6. Hero ---------- */
.hero{
  padding: clamp(56px, 9vw, 108px) 0 clamp(40px, 6vw, 64px);
  background:
    radial-gradient(700px 420px at 82% -10%, var(--green-050), transparent 60%);
}
.hero .inner{ display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 56px; align-items: center; }
@media (max-width: 980px){ .hero .inner{ grid-template-columns: 1fr; } }
.hero h1{ margin-bottom: 20px; }
.hero h1 .accent{ color: var(--green-800); }
.hero .lede{ margin-bottom: 32px; }
.hero-actions{ display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 28px; }
.trust-row{ display: flex; gap: 22px; flex-wrap: wrap; }
.trust-row .stat{ }
.trust-row .stat b{ display: block; font-family: var(--font-display); font-size: 22px; }
.trust-row .stat span{ font-size: 12.5px; color: var(--gray-500); }

.hero-visual{
  background: var(--black);
  border-radius: var(--r-lg);
  padding: 28px;
  color: var(--white);
  box-shadow: var(--shadow-lg);
  transform: rotate(0.4deg);
}
.hero-visual .hv-label{ font-family: var(--font-mono); font-size: 11.5px; letter-spacing: 0.08em; text-transform: uppercase; color: #8fd6b4; margin-bottom: 10px; }
.hero-visual .hv-payment{ font-family: var(--font-display); font-size: 44px; font-weight: 700; margin-bottom: 4px; }
.hero-visual .hv-sub{ font-size: 13px; color: rgba(255,255,255,0.6); margin-bottom: 22px; }
.hero-visual .hv-bars{ display: flex; align-items: flex-end; gap: 5px; height: 90px; }
.hero-visual .hv-bars i{ flex: 1; background: linear-gradient(180deg, #2f7f61, #0f4c39); border-radius: 4px 4px 0 0; }

/* ---------- 7. Reveal on scroll ---------- */
.reveal{ opacity: 0; transform: translateY(18px); transition: opacity 640ms var(--ease), transform 640ms var(--ease); }
.reveal.is-visible{ opacity: 1; transform: none; }

/* ---------- 8. Ad slots ---------- */
.ad-slot{
  max-width: var(--max-w); margin: 28px auto; padding: 0 var(--gutter);
}
.ad-slot .ad-box{
  border: 1px dashed var(--gray-200);
  border-radius: var(--r-md);
  min-height: 90px;
  display: grid; place-items: center;
  color: var(--gray-400);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--gray-050);
}
.ad-slot.ad-leaderboard .ad-box{ min-height: 90px; }
.ad-slot.ad-sidebar .ad-box{ min-height: 250px; }
.ad-slot.ad-inline .ad-box{ min-height: 120px; }

/* ---------- 9. Sección genérica ---------- */
.section{ padding: clamp(48px, 7vw, 96px) 0; }
.section-head{ max-width: 640px; margin-bottom: 44px; }
.section-alt{ background: var(--gray-050); }

/* ---------- 10. Calculadora ---------- */
.calc{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
@media (max-width: 980px){ .calc{ grid-template-columns: 1fr; } }

.calc-form{ padding: clamp(24px, 3.4vw, 44px); border-right: 1px solid var(--gray-200); }
@media (max-width: 980px){ .calc-form{ border-right: none; border-bottom: 1px solid var(--gray-200); } }

.calc-results{ padding: clamp(24px, 3.4vw, 44px); background: var(--green-050); }

.form-group{ margin-bottom: 26px; }
.form-group:last-child{ margin-bottom: 0; }

.field-row{ display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 10px; gap: 12px; }
.field-row label{ font-size: 14px; font-weight: 600; color: var(--black); }
.field-row .field-hint{ font-size: 12px; color: var(--gray-500); font-weight: 400; }
.field-value{ font-family: var(--font-mono); font-weight: 600; font-size: 14.5px; color: var(--green-800); white-space: nowrap; }

.input-money{
  display: flex; align-items: center; gap: 8px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--r-sm);
  padding: 12px 14px;
  transition: border-color var(--dur-fast) var(--ease);
}
.input-money:focus-within{ border-color: var(--green-800); }
.input-money span{ font-family: var(--font-mono); color: var(--gray-500); font-size: 14px; }
.input-money input{
  border: none; outline: none; width: 100%;
  font-family: var(--font-mono); font-size: 16px; font-weight: 600; color: var(--black);
  background: transparent;
}

input[type="range"]{
  -webkit-appearance: none; width: 100%; height: 4px;
  border-radius: var(--r-pill); background: var(--gray-200); outline: none; margin-top: 6px;
}
input[type="range"]::-webkit-slider-thumb{
  -webkit-appearance: none; width: 18px; height: 18px; border-radius: 50%;
  background: var(--white); border: 3px solid var(--green-800); cursor: pointer;
  transition: transform var(--dur-fast) var(--ease); box-shadow: var(--shadow-sm);
}
input[type="range"]::-webkit-slider-thumb:hover{ transform: scale(1.15); }
input[type="range"]::-moz-range-thumb{
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--white); border: 3px solid var(--green-800); cursor: pointer;
}

.segmented{
  display: grid; grid-template-columns: repeat(3, 1fr);
  background: var(--gray-100); border-radius: var(--r-sm); padding: 4px; gap: 4px;
}
.segmented button{
  border: none; background: transparent; padding: 10px 8px; border-radius: 7px;
  font-size: 13.5px; font-weight: 600; color: var(--gray-700);
  transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.segmented button.is-active{ background: var(--white); color: var(--green-900); box-shadow: var(--shadow-sm); }

.euribor-field{ margin-top: 14px; max-height: 0; opacity: 0; overflow: hidden; transition: max-height var(--dur-med) var(--ease), opacity var(--dur-med) var(--ease); }
.euribor-field.is-open{ max-height: 140px; opacity: 1; }

.advanced-toggle{
  display: flex; align-items: center; gap: 8px;
  font-size: 13.5px; font-weight: 600; color: var(--green-800);
  padding: 10px 0; margin-top: 6px; border: none; background: none;
}
.advanced-toggle svg{ width: 16px; height: 16px; transition: transform var(--dur-fast) var(--ease); }
.advanced-toggle[aria-expanded="true"] svg{ transform: rotate(180deg); }
.advanced-fields{ max-height: 0; overflow: hidden; opacity: 0; transition: max-height var(--dur-med) var(--ease), opacity var(--dur-med) var(--ease); }
.advanced-fields.is-open{ max-height: 900px; opacity: 1; }
.advanced-grid{ display: grid; grid-template-columns: 1fr 1fr; gap: 20px 16px; padding-top: 10px; }
@media (max-width: 560px){ .advanced-grid{ grid-template-columns: 1fr; } }

/* Resultados */
.result-hero{
  background: var(--black); color: var(--white);
  border-radius: var(--r-md); padding: 24px; margin-bottom: 20px;
}
.result-hero .rh-label{ font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: #8fd6b4; margin-bottom: 8px; }
.result-hero .rh-value{ font-family: var(--font-display); font-size: clamp(32px,4vw,44px); font-weight: 700; }
.result-hero .rh-value small{ font-family: var(--font-mono); font-size: 14px; font-weight: 400; color: rgba(255,255,255,0.55); margin-left: 6px; }

.result-grid{ display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 22px; }
.result-card{
  background: var(--white); border: 1px solid var(--gray-200); border-radius: var(--r-sm);
  padding: 16px; transition: box-shadow var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}
.result-card:hover{ box-shadow: var(--shadow-sm); }
.result-card .rc-label{ font-size: 12px; color: var(--gray-500); margin-bottom: 6px; }
.result-card .rc-value{ font-family: var(--font-mono); font-weight: 600; font-size: 18px; color: var(--black); }
.result-card .rc-value.is-total{ color: var(--green-800); }

.chart-tabs{ display: flex; gap: 8px; margin-bottom: 16px; }
.chart-tabs button{
  border: 1px solid var(--gray-200); background: var(--white); padding: 8px 16px;
  border-radius: var(--r-pill); font-size: 13px; font-weight: 600; color: var(--gray-700);
  transition: all var(--dur-fast) var(--ease);
}
.chart-tabs button.is-active{ background: var(--green-900); border-color: var(--green-900); color: var(--white); }

.chart-panel{
  background: var(--white); border: 1px solid var(--gray-200); border-radius: var(--r-sm);
  padding: 18px; margin-bottom: 22px;
}
.chart-panel canvas{ width: 100%; height: 240px; }
.chart-legend{ display: flex; gap: 18px; margin-top: 12px; font-size: 12.5px; color: var(--gray-700); flex-wrap: wrap; }
.chart-legend span{ display: inline-flex; align-items: center; gap: 6px; }
.chart-legend i{ width: 10px; height: 10px; border-radius: 3px; display: inline-block; }

.result-actions{ display: flex; flex-wrap: wrap; gap: 10px; }
.result-actions .btn{ flex: 1; min-width: 130px; }

/* Tabla de amortización */
.amort-wrap{ margin-top: 44px; }
.amort-table-scroll{
  border: 1px solid var(--gray-200); border-radius: var(--r-md); overflow: hidden auto; max-height: 480px;
}
table.amort-table{ width: 100%; border-collapse: collapse; font-family: var(--font-mono); font-size: 13.5px; }
table.amort-table thead th{
  position: sticky; top: 0; background: var(--black); color: var(--white);
  text-align: right; padding: 12px 14px; font-weight: 500; font-size: 11.5px; letter-spacing: 0.04em; text-transform: uppercase;
}
table.amort-table thead th:first-child, table.amort-table td:first-child{ text-align: left; }
table.amort-table td{ text-align: right; padding: 10px 14px; border-top: 1px solid var(--gray-100); }
table.amort-table tbody tr:nth-child(odd){ background: var(--gray-050); }
.amort-note{ font-size: 12.5px; color: var(--gray-500); margin-top: 10px; }

/* ---------- 11. Cómo funciona / features ---------- */
.feature-grid{ display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
@media (max-width: 860px){ .feature-grid{ grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px){ .feature-grid{ grid-template-columns: 1fr; } }
.feature-card{
  border: 1px solid var(--gray-200); border-radius: var(--r-md); padding: 26px;
  transition: transform var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}
.feature-card:hover{ transform: translateY(-3px); box-shadow: var(--shadow-md); }
.feature-card .fi{
  width: 42px; height: 42px; border-radius: 12px; background: var(--green-050);
  display: grid; place-items: center; margin-bottom: 16px;
}
.feature-card .fi svg{ width: 20px; height: 20px; color: var(--green-800); }
.feature-card h3{ margin-bottom: 8px; }
.feature-card p{ color: var(--gray-700); font-size: 14.5px; }

/* ---------- 12. Blog ---------- */
.blog-grid{ display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
@media (max-width: 900px){ .blog-grid{ grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px){ .blog-grid{ grid-template-columns: 1fr; } }
.blog-card{
  border: 1px solid var(--gray-200); border-radius: var(--r-md); overflow: hidden;
  display: flex; flex-direction: column; transition: box-shadow var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}
.blog-card:hover{ box-shadow: var(--shadow-md); transform: translateY(-3px); }
.blog-card .bc-top{ height: 160px; background: var(--green-050); overflow: hidden; position: relative; }
.blog-card .bc-top svg{ width: 100%; height: 100%; display: block; }
.blog-card .bc-new-badge{
  position: absolute; top: 12px; right: 12px;
  background: var(--black); color: var(--white);
  font-family: var(--font-mono); font-size: 10.5px; font-weight: 600;
  letter-spacing: 0.06em; text-transform: uppercase;
  padding: 5px 10px; border-radius: var(--r-pill);
}
.blog-card .bc-body{ padding: 20px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.blog-card .bc-tag{ font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--green-800); }
.blog-card h3{ font-size: 17.5px; }
.blog-card p{ color: var(--gray-700); font-size: 13.5px; flex: 1; }
.blog-card .bc-read{ font-size: 13.5px; font-weight: 600; color: var(--black); display: inline-flex; align-items: center; gap: 6px; }
.blog-card .bc-read svg{ width: 14px; height: 14px; transition: transform var(--dur-fast) var(--ease); }
.blog-card:hover .bc-read svg{ transform: translateX(3px); }

/* Artículo individual */
.article-header{ padding: clamp(48px,7vw,88px) 0 30px; border-bottom: 1px solid var(--gray-200); }
.breadcrumbs{ font-size: 12.5px; color: var(--gray-500); margin-bottom: 18px; }
.breadcrumbs a:hover{ color: var(--black); }
.article-meta{ display: flex; gap: 16px; margin-top: 18px; font-size: 13px; color: var(--gray-500); }
.article-body{ max-width: 740px; margin: 0 auto; padding: 44px var(--gutter) 0; }
.article-body h2{ margin-top: 44px; margin-bottom: 14px; }
.article-body h3{ margin-top: 30px; margin-bottom: 10px; }
.article-body p{ margin-bottom: 18px; color: var(--gray-700); font-size: 16.5px; }
.article-body ul, .article-body ol{ margin: 0 0 20px; padding-left: 22px; color: var(--gray-700); }
.article-body li{ margin-bottom: 8px; }
.article-body strong{ color: var(--black); }
.callout{
  background: var(--green-050); border-left: 3px solid var(--green-800);
  border-radius: 0 var(--r-sm) var(--r-sm) 0; padding: 18px 22px; margin: 26px 0; font-size: 15px;
}
.article-cta{
  margin: 48px auto 0; max-width: 740px; padding: 0 var(--gutter) 60px;
}
.article-cta .box{ background: var(--black); color: var(--white); border-radius: var(--r-md); padding: 32px; text-align: center; }
.article-cta .box h3{ color: var(--white); margin-bottom: 10px; }
.article-cta .box p{ color: rgba(255,255,255,0.65); margin-bottom: 20px; font-size: 14.5px; }

/* ---------- 13. Leads ---------- */
.lead-section{ background: var(--black); color: var(--white); }
.lead-wrap{ display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
@media (max-width: 900px){ .lead-wrap{ grid-template-columns: 1fr; } }
.lead-wrap h2{ color: var(--white); margin-bottom: 14px; }
.lead-wrap .lede{ color: rgba(255,255,255,0.62); }
.lead-points{ margin-top: 26px; display: flex; flex-direction: column; gap: 12px; }
.lead-points li{ display: flex; gap: 10px; font-size: 14.5px; color: rgba(255,255,255,0.85); align-items: flex-start; }
.lead-points svg{ width: 18px; height: 18px; color: #8fd6b4; flex-shrink: 0; margin-top: 2px; }

.lead-form{ background: var(--white); border-radius: var(--r-lg); padding: 32px; color: var(--black); box-shadow: var(--shadow-lg); }
.form-field{ margin-bottom: 18px; }
.form-field label{ display: block; font-size: 13.5px; font-weight: 600; margin-bottom: 8px; }
.form-field input, .form-field select{
  width: 100%; padding: 13px 14px; border: 1.5px solid var(--gray-200); border-radius: var(--r-sm);
  font-family: var(--font-body); font-size: 15px; transition: border-color var(--dur-fast) var(--ease);
  background: var(--white); color: var(--black);
}
.form-field input:focus, .form-field select:focus{ border-color: var(--green-800); outline: none; }
.form-field .error-msg{ font-size: 12px; color: var(--danger); margin-top: 6px; display: none; }
.form-field.has-error input{ border-color: var(--danger); }
.form-field.has-error .error-msg{ display: block; }
.form-consent{ font-size: 12px; color: var(--gray-500); margin-bottom: 18px; }
.form-status{ font-size: 13.5px; margin-top: 14px; display: none; }
.form-status.is-success{ display: block; color: var(--green-800); }
.form-status.is-error{ display: block; color: var(--danger); }

/* ---------- 14. FAQ ---------- */
.faq-list{ max-width: 780px; }
.faq-item{ border-bottom: 1px solid var(--gray-200); }
.faq-q{
  width: 100%; text-align: left; background: none; border: none; padding: 20px 0;
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  font-family: var(--font-display); font-weight: 600; font-size: 16px;
}
.faq-q svg{ width: 18px; height: 18px; flex-shrink: 0; transition: transform var(--dur-fast) var(--ease); }
.faq-item.is-open .faq-q svg{ transform: rotate(45deg); }
.faq-a{ max-height: 0; overflow: hidden; opacity: 0; transition: max-height var(--dur-med) var(--ease), opacity var(--dur-med) var(--ease); }
.faq-item.is-open .faq-a{ max-height: 240px; opacity: 1; }
.faq-a p{ padding-bottom: 20px; color: var(--gray-700); font-size: 14.5px; max-width: 68ch; }

/* ---------- 15. Footer ---------- */
.site-footer{ border-top: 1px solid var(--gray-200); padding: 52px 0 30px; }
.footer-grid{ display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 40px; }
@media (max-width: 760px){ .footer-grid{ grid-template-columns: 1fr 1fr; } }
.footer-grid h4{ font-size: 13px; font-weight: 600; margin-bottom: 14px; color: var(--gray-500); text-transform: uppercase; letter-spacing: 0.05em; }
.footer-grid ul{ display: flex; flex-direction: column; gap: 10px; }
.footer-grid a{ font-size: 14px; color: var(--gray-700); }
.footer-grid a:hover{ color: var(--black); }
.footer-bottom{ display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; border-top: 1px solid var(--gray-200); padding-top: 24px; font-size: 12.5px; color: var(--gray-500); }
.footer-legal-note{ max-width: 720px; margin: 0 auto 24px; font-size: 12px; color: var(--gray-400); text-align: center; }

/* ---------- Rieles publicitarios fijos a los lados (solo pantallas muy anchas) ---------- */
.ad-rail{
  display: none;
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  width: 160px;
  z-index: 40;
}
.ad-rail .ad-box{ min-height: 600px; }
.ad-rail-left{ left: max(12px, calc(50% - 780px)); }
.ad-rail-right{ right: max(12px, calc(50% - 780px)); }
@media (min-width: 1500px){ .ad-rail{ display: block; } }

/* ---------- 16. Toast (compartir / copiar) ---------- */
.toast{
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--black); color: var(--white); padding: 12px 20px; border-radius: var(--r-pill);
  font-size: 13.5px; opacity: 0; pointer-events: none; transition: all var(--dur-med) var(--ease);
  z-index: 300; box-shadow: var(--shadow-lg);
}
.toast.is-visible{ opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- 17. Print ---------- */
@media print{
  .site-header, .site-footer, .lead-section, .ad-slot, .ad-rail, .hero, .btn, .nav-toggle,
  .chart-tabs, .feature-grid, .blog-grid, #blog, #faq, #leads{ display: none !important; }
  body{ font-size: 12px; }
  .calc{ box-shadow: none; border: none; }
  .amort-table-scroll{ max-height: none; overflow: visible; }
}