:root {
  --color-bg: #F8FAFC;
  --color-surface: #FFFFFF;
  --color-text: #111827;
  --color-text-secondary: #4B5563;
  --color-muted: #6B7280;
  --color-accent: #2563EB;
  --color-accent-hover: #1D4ED8;
  --color-accent-light: #EEF4FF;
  --color-dark: #0F172A;
  --color-dark-surface: #172033;
  --color-dark-muted: #A9B4C8;
  --color-border: #E3E8F0;
  --color-danger-soft: #FFF1F2;
  --section-py: 50px;
  --section-px: 20px;
  --content-max: 1180px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 26px;
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --font: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --header-height: 64px;
  --mobile-sticky-height: 70px;
}
@media (min-width: 1024px) {
  :root { --section-py: 100px; --section-px: 32px; --header-height: 72px; }
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font); color: var(--color-text); background: var(--color-bg);
  font-size: 16px; line-height: 1.6; -webkit-font-smoothing: antialiased;
  padding-bottom: calc(var(--mobile-sticky-height) + 12px);
}
@media (min-width: 1024px) { body { padding-bottom: 0; } }
a { color: inherit; text-decoration: none; }
button { font: inherit; border: 0; background: none; color: inherit; cursor: pointer; }
ul { list-style: none; }
strong { color: inherit; }
h1,h2,h3 { line-height: 1.08; letter-spacing: -.025em; }
h1 { font-size: clamp(2.25rem, calc(1.70rem + 1.10vw), 3.40rem); font-weight: 800; }
h2 { font-size: clamp(1.75rem, calc(1.45rem + .75vw), 2.50rem); font-weight: 800; }
h3 { font-size: clamp(1.15rem, calc(1.05rem + .22vw), 1.38rem); font-weight: 700; }
p { color: var(--color-text-secondary); }
.container { width: 100%; max-width: var(--content-max); margin: 0 auto; padding-inline: var(--section-px); }
.narrow { max-width: 900px; }
.section { padding-block: var(--section-py); }
.centered { text-align: center; }

.site-header {
  height: var(--header-height); position: sticky; top: 0; z-index: 1000;
  background: rgba(255,255,255,.96); border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(12px);
}
.header-inner { height: 100%; display: flex; align-items: center; gap: 18px; }
.brand { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-mark {
  width: 38px; height: 38px; display: inline-grid; place-items: center;
  background: var(--color-accent); color: white; border-radius: 10px;
  font-size: 12px; font-weight: 800; letter-spacing: .05em;
}
.brand-copy { line-height: 1.02; display: block; }
.brand-copy strong { display:block; font-size: 15px; text-transform: uppercase; letter-spacing: .02em; }
.brand-copy small { display:block; color: var(--color-accent); font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .12em; margin-top: 4px; }
.desktop-nav { display: none; margin-left: auto; gap: 22px; align-items: center; }
.desktop-nav a { font-size: 14px; font-weight: 600; color: #374151; }
.desktop-nav a:hover { color: var(--color-accent); }
.header-actions { display: flex; align-items: center; gap: 14px; margin-left: auto; }
.header-cta { display: none !important; }
.lang-switch { display: none; align-items: center; gap: 6px; font-size: 12px; font-weight: 800; color: var(--color-muted); white-space: nowrap; }
.lang-switch span[aria-current="page"] { color: var(--color-accent); }
.lang-switch a:hover { color: var(--color-accent); }
.lang-sep { color: #CBD5E1 !important; font-weight: 500 !important; }
.menu-button { margin-left: 0; width: 42px; height: 42px; display: grid; place-items: center; border-radius: 10px; border: 1px solid var(--color-border); }
.menu-button svg { width: 24px; height: 24px; }
.menu-button .icon-close { display: none; }
.menu-button[aria-expanded="true"] .icon-menu { display: none; }
.menu-button[aria-expanded="true"] .icon-close { display: block; }
.mobile-menu { display: none; position: fixed; top: var(--header-height); inset-inline: 0; bottom: 0; background: var(--color-dark); z-index: 999; }
.mobile-menu.is-open { display: block; }
.mobile-menu-inner { display: flex; flex-direction: column; gap: 0; padding-top: 24px; }
.mobile-menu-inner > a:not(.btn) { color: white; padding: 18px 0; border-bottom: 1px solid rgba(255,255,255,.1); font-size: 21px; font-weight: 600; }
.mobile-menu-inner .btn { margin-top: 22px; }
.mobile-lang { display:flex; align-items:center; gap:16px; padding:18px 0 4px; color:white; font-size:14px; }
.mobile-lang strong { color:#7EA7FF; }
.mobile-lang a { color:#D8E0EC; text-decoration:underline; text-underline-offset:3px; }

@media (min-width: 1440px) {
  :root { --section-px: 36px; }
  .hero h1 { max-width: 820px; }
}
@media (min-width: 1024px) {
  .desktop-nav { display: flex; }
  .header-cta { display: inline-flex !important; }
  .lang-switch { display:flex; }
  .menu-button, .mobile-menu { display: none !important; }
  .header-actions { margin-left: 0; }
}

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 24px; border-radius: var(--radius-md); font-weight: 700;
  font-size: clamp(14px, 13px + .15vw, 16px); line-height: 1.2; transition: .15s ease; text-align: center;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0) scale(.99); }
.btn:focus-visible { outline: 3px solid rgba(37,99,235,.3); outline-offset: 3px; }
.btn-primary { background: var(--color-accent); color: white; box-shadow: 0 8px 24px rgba(37,99,235,.18); }
.btn-primary:hover { background: var(--color-accent-hover); }
.btn-secondary { background: white; color: var(--color-text); border: 1px solid #CBD5E1; }
.btn-dark { background: var(--color-dark); color: white; }
.btn-lg { min-height: 54px; padding: 16px 26px; }
.btn-block { width: 100%; }

.hero { padding: clamp(44px, 3.8vw, 64px) 0; background: linear-gradient(180deg, #fff 0%, var(--color-bg) 100%); }
.hero-grid { display: grid; grid-template-columns: 1fr; gap: clamp(28px, 3vw, 48px); align-items: center; }
.hero-copy { display: flex; flex-direction: column; align-items: flex-start; gap: clamp(16px, 1.5vw, 22px); }
.eyebrow, .section-kicker, .offer-label, .fit-label, .pricing-badge {
  font-size: 12px; line-height: 1.25; font-weight: 800; letter-spacing: .10em; text-transform: uppercase; color: var(--color-accent);
}
.hero h1 { max-width: 680px; }
.hero-lead { font-size: clamp(1rem, calc(.94rem + .18vw), 1.16rem); max-width: 650px; }
.hero-price { font-size: clamp(15px, 14px + .2vw, 17px); color: #334155; }
.hero-price strong { color: var(--color-accent); font-size: clamp(18px, 17px + .2vw, 20px); }
.hero-actions { display: flex; flex-direction: column; width: 100%; gap: 12px; }
.hero-actions .btn { width: 100%; }
.microcopy { font-size: 13px; color: var(--color-muted); }
.hero-offer { background: white; border: 1px solid var(--color-border); border-radius: var(--radius-xl); padding: clamp(24px, 2vw, 30px); box-shadow: 0 20px 60px rgba(15,23,42,.08); }
.offer-price { font-size: clamp(2.55rem, calc(2.2rem + .65vw), 3.3rem); line-height: 1; font-weight: 800; letter-spacing: -.06em; margin-top: 14px; }
.offer-price > span { font-size: clamp(19px, calc(17px + .25vw), 23px); vertical-align: top; letter-spacing: 0; }
.offer-price small { font-size: clamp(14px, calc(13px + .15vw), 16px); letter-spacing: 0; color: var(--color-muted); font-weight: 600; }
.offer-rule { height: 1px; background: var(--color-border); margin: 24px 0; }
.check-list { display: grid; gap: 14px; }
.check-list li, .x-list li { position: relative; padding-left: 30px; color: #334155; }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: -1px; color: var(--color-accent); font-weight: 900; }
.x-list { display: grid; gap: 14px; }
.x-list li::before { content: "×"; position: absolute; left: 0; top: -4px; color: #DC2626; font-weight: 900; font-size: 24px; }
.compact { gap: 11px; margin-bottom: 24px; }

@media (min-width: 768px) {
  .hero-actions { flex-direction: row; width: auto; }
  .hero-actions .btn { width: auto; }
}
@media (min-width: 1024px) {
  .hero-grid { grid-template-columns: minmax(0,1.42fr) minmax(320px,.70fr); gap: clamp(36px, 3.2vw, 52px); }
}
@media (min-width: 1024px) and (max-width: 1599px) {
  .hero-copy { gap: 16px; }
  .hero-offer { padding: 24px; }
  .check-list { gap: 11px; }
  .offer-rule { margin: 20px 0; }
}
@media (min-width: 1600px) { h1 { font-size: clamp(2.75rem, calc(2rem + 1vw), 3.4rem); } }

.proof-strip { background: var(--color-accent); color: white; }
.proof-grid { display: grid; grid-template-columns: repeat(2,1fr); }
.proof-grid > div { padding: 22px 10px; text-align: center; border-right: 1px solid rgba(255,255,255,.22); border-bottom: 1px solid rgba(255,255,255,.22); }
.proof-grid strong { display:block; font-size: 22px; line-height: 1; }
.proof-grid span { display:block; margin-top: 7px; font-size: 12px; font-weight: 600; opacity:.86; }
@media (min-width: 768px) { .proof-grid { grid-template-columns: repeat(5,1fr); } .proof-grid > div { border-bottom:0; } }

.contrast-section { background: white; }
.section-kicker { display: inline-block; margin-bottom: 20px; }
.section-lead { font-size: clamp(1rem, calc(.96rem + .20vw), 1.18rem); margin-top: 26px; line-height: 1.75; }
.quote-card { margin: 36px 0; background: var(--color-accent-light); border-left: 5px solid var(--color-accent); border-radius: 0 var(--radius-lg) var(--radius-lg) 0; padding: 28px; }
.quote-card p { color: var(--color-text); font-size: clamp(1.2rem, calc(1.05rem + .45vw), 1.55rem); font-weight: 800; line-height: 1.25; }

.dark-section { background: var(--color-dark); }
.light-heading h2, .dark-section h3 { color: white; }
.light-heading p { color: var(--color-dark-muted); }
.section-heading { max-width: 820px; margin-bottom: 46px; }
.section-heading h2 { margin-bottom: 18px; }
.section-heading p { font-size: clamp(16px, 15px + .15vw, 18px); }
.feature-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
.feature-card { background: var(--color-dark-surface); border: 1px solid rgba(255,255,255,.08); border-radius: var(--radius-lg); padding: 28px; }
.feature-number { display:inline-block; color: #7EA7FF; font-weight: 800; font-size: 13px; margin-bottom: 28px; }
.feature-card h3 { margin-bottom: 12px; }
.feature-card p { color: var(--color-dark-muted); font-size: 15px; }
@media (min-width: 768px) { .feature-grid { grid-template-columns: repeat(2,1fr); } }
@media (min-width: 1024px) { .feature-grid { grid-template-columns: repeat(3,1fr); gap: 20px; } }

.math-section { background: var(--color-bg); }
.split { display: grid; grid-template-columns: 1fr; gap: 40px; align-items: center; }
.top-align { align-items: stretch; }
.math-card { background: white; border: 1px solid var(--color-border); border-radius: var(--radius-xl); padding: 24px; }
.math-row { display: grid; gap: 5px; padding: 20px 0; border-bottom: 1px solid var(--color-border); }
.math-row span { color: var(--color-muted); font-size: 14px; }
.math-row strong { font-size: 20px; }
.math-row.featured { margin: 12px -10px 0; padding: 20px 10px; border-radius: var(--radius-md); background: var(--color-accent-light); border-bottom:0; }
.math-row.featured strong { color: var(--color-accent); font-size: 28px; }
.math-card > p { margin-top: 20px; font-size: 14px; }
@media (min-width: 1024px) { .split { grid-template-columns: repeat(2,1fr); gap: 76px; } }

.demo-section { background: white; }
.how-section { background: var(--color-bg); }
.steps-grid { display:grid; grid-template-columns:1fr; gap:16px; }
.step-card { background:white; border:1px solid var(--color-border); border-radius:var(--radius-lg); padding:28px; }
.step-card > span { width:42px; height:42px; display:grid; place-items:center; border-radius:50%; background:var(--color-accent); color:white; font-weight:800; margin-bottom:28px; }
.step-card h3 { margin-bottom:12px; }
@media (min-width:768px) { .steps-grid { grid-template-columns:repeat(3,1fr); } }

.positioning-section { background:white; }
.positioning-section strong { color:var(--color-text); }
.big-line { margin-top:38px; padding:28px 20px; background:var(--color-dark); color:white; border-radius:var(--radius-lg); font-size:clamp(1.45rem,4vw,2.3rem); font-weight:800; line-height:1.2; }
.big-line span { color:#7EA7FF; }

.for-section { background: var(--color-bg); }
.fit-card { border-radius:var(--radius-xl); padding:28px; }
.fit-card h2 { font-size:clamp(1.7rem,4vw,2.5rem); margin:16px 0 28px; }
.good-fit { background:white; border:1px solid var(--color-border); }
.bad-fit { background:var(--color-danger-soft); border:1px solid #FFE0E4; }
.bad-fit .fit-label { color:#DC2626; }

.pricing-section { background:var(--color-dark); }
.pricing-wrap { display:grid; grid-template-columns:1fr; gap:42px; align-items:center; }
.pricing-copy h2 { color:white; margin-bottom:24px; }
.pricing-copy p { color:var(--color-dark-muted); font-size:clamp(16px, 15px + .15vw, 18px); margin-bottom:16px; }
.pricing-card { background:white; border-radius:var(--radius-xl); padding:30px; }
.price { font-size:clamp(3.2rem, 2.8rem + 1vw, 4.2rem); font-weight:800; letter-spacing:-.06em; line-height:1; margin:20px 0 6px; }
.price sup { font-size:28px; vertical-align:top; letter-spacing:0; }
.price span { font-size:18px; letter-spacing:0; color:var(--color-muted); }
.price-sub { margin-bottom:28px; }
.pricing-card .check-list { margin-bottom:28px; }
.pricing-card small { display:block; text-align:center; color:var(--color-muted); margin-top:12px; font-size:11px; }
@media (min-width:1024px) { .pricing-wrap { grid-template-columns:1fr 460px; gap:80px; } }

.faq-section { background:white; }
.faq-wrap { max-width:900px; }
.faq-list { border-top:1px solid var(--color-border); }
.faq-item { border-bottom:1px solid var(--color-border); }
.faq-question { width:100%; display:flex; align-items:center; justify-content:space-between; gap:20px; padding:22px 0; text-align:left; font-weight:700; font-size:17px; }
.faq-question b { width:30px; height:30px; flex:0 0 30px; display:grid; place-items:center; border-radius:50%; background:var(--color-accent-light); color:var(--color-accent); font-size:20px; }
.faq-answer { display:none; padding:0 0 24px; }
.faq-item.is-open .faq-answer { display:block; }
.faq-item.is-open .faq-question b { transform:rotate(45deg); }

.final-section { background:linear-gradient(135deg,#EAF1FF,#F8FAFC 56%,#E9F2FF); }
.final-inner { max-width:900px; text-align:center; }
.final-inner h2 { margin-bottom:24px; }
.final-inner > p { font-size:clamp(16px, 15px + .18vw, 19px); max-width:760px; margin:0 auto 12px; }
.final-punch { color:var(--color-text) !important; font-weight:800; font-size:clamp(1.35rem,3vw,2rem) !important; margin-top:30px !important; }
.final-actions { display:flex; flex-direction:column; gap:12px; justify-content:center; margin-top:32px; }
@media(min-width:700px){ .final-actions { flex-direction:row; } }

.site-footer { background:var(--color-dark); color:white; padding:54px 0 28px; }
.footer-grid { display:grid; grid-template-columns:1fr; gap:36px; }
.footer-brand .brand-copy strong { color:white; }
.footer-grid p { color:var(--color-dark-muted); max-width:360px; margin-top:16px; font-size:14px; }
.footer-links { display:flex; flex-direction:column; align-items:flex-start; gap:12px; color:#D8E0EC; font-size:14px; }
.footer-bottom { margin-top:42px; padding-top:22px; border-top:1px solid rgba(255,255,255,.09); color:#7F8CA1; font-size:12px; }
@media(min-width:768px){ .footer-grid { grid-template-columns:2fr 1fr 1fr; } }

.mobile-sticky { position:fixed; bottom:0; inset-inline:0; min-height:var(--mobile-sticky-height); z-index:1100; display:grid; grid-template-columns:1fr 1fr; gap:8px; padding:8px 12px; background:white; border-top:1px solid var(--color-border); box-shadow:0 -8px 30px rgba(15,23,42,.08); }
.mobile-sticky .btn { min-height:52px; padding-inline:12px; font-size:14px; }
@media(min-width:1024px){ .mobile-sticky { display:none; } }

/* Hero desktop: mantiene header + hero dentro del primer viewport */
@media (min-width: 1024px) {
  .hero { min-height: calc(100svh - var(--header-height)); display: flex; align-items: center; padding: clamp(22px, 2.2vw, 38px) 0; }
  .hero-grid { width: 100%; }
  .hero-copy { gap: 13px; }
  .hero h1 { font-size: clamp(2.3rem, calc(1.85rem + .70vw), 2.9rem); max-width: 700px; }
  .hero-lead { font-size: clamp(.98rem, calc(.93rem + .12vw), 1.08rem); line-height: 1.55; }
  .hero-offer { padding: 20px 22px; }
  .offer-price { font-size: clamp(2.4rem, calc(2.15rem + .38vw), 2.85rem); margin-top: 10px; }
  .offer-rule { margin: 16px 0; }
  .compact { gap: 8px; margin-bottom: 18px; }
  .compact li { font-size: 14px; line-height: 1.35; }
  .btn-lg { min-height: 48px; padding: 13px 22px; }
  .microcopy { font-size: 12px; }
}
@media (min-width: 1600px) {
  .hero h1 { font-size: clamp(2.7rem, calc(2.2rem + .5vw), 3.25rem); }
}

/* Multi-demo proof + garantía primer mes */
.demo-heading { max-width: 860px; }
.demo-cards { display: grid; grid-template-columns: 1fr; gap: 16px; }
.demo-card {
  background: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius-lg);
  padding: 26px; display: flex; flex-direction: column; align-items: flex-start; min-width: 0;
}
.demo-type { display: inline-block; font-size: 11px; line-height: 1.2; font-weight: 800; letter-spacing: .10em; text-transform: uppercase; color: var(--color-accent); margin-bottom: 16px; }
.demo-card h3 { margin-bottom: 12px; }
.demo-card p { margin-bottom: 24px; flex: 1; }
.demo-card .btn { margin-top: auto; }
.demo-bottom { margin-top: 30px; background: var(--color-accent-light); border: 1px solid #D8E5FF; border-radius: var(--radius-lg); padding: 22px 24px; }
.demo-bottom p { color: #334155; }
.demo-bottom strong { color: var(--color-text); }
@media (min-width: 768px) { .demo-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; } }

.guarantee-section { background: linear-gradient(135deg, #EFF5FF 0%, #FFFFFF 52%, #F5F8FF 100%); border-top: 1px solid #DCE7FA; border-bottom: 1px solid #DCE7FA; }
.guarantee-grid { display: grid; grid-template-columns: 1fr; gap: 36px; align-items: center; }
.guarantee-copy h2 { max-width: 760px; }
.guarantee-copy > p:not(.section-lead) { margin-top: 18px; font-size: clamp(16px, 15px + .15vw, 18px); }
.guarantee-copy .section-lead strong { color: var(--color-text); }
.guarantee-card { background: var(--color-dark); color: white; border-radius: var(--radius-xl); padding: clamp(26px, 3vw, 36px); box-shadow: 0 24px 70px rgba(15,23,42,.14); }
.guarantee-badge { display: inline-block; padding: 7px 10px; border-radius: 999px; background: rgba(126,167,255,.13); border: 1px solid rgba(126,167,255,.25); color: #AFC8FF; font-size: 11px; line-height: 1.2; font-weight: 800; letter-spacing: .10em; text-transform: uppercase; }
.guarantee-card h3 { color: white; font-size: clamp(1.55rem, 1.35rem + .5vw, 2rem); margin: 20px 0 26px; }
.guarantee-card .check-list { gap: 13px; }
.guarantee-card .check-list li { color: #E4EAF4; }
.guarantee-card .check-list li::before { color: #7EA7FF; }
.guarantee-limit { margin-top: 28px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.12); }
.guarantee-limit strong { display: block; margin-bottom: 6px; }
.guarantee-limit p { color: var(--color-dark-muted); font-size: 14px; }
.final-microcopy { margin-top: 22px !important; font-size: 13px !important; color: var(--color-muted) !important; }
@media (min-width: 1024px) { .guarantee-grid { grid-template-columns: minmax(0, 1.05fr) minmax(360px, .75fr); gap: 76px; } }

/* Ajustes para textos en español */
@media (max-width: 767px) {
  .hero { padding-top: 30px; padding-bottom: 36px; }
  .hero-grid { gap: 22px; }
  .hero-copy { gap: 13px; }
  .hero h1 { font-size: clamp(1.95rem, 8.7vw, 2.22rem); line-height: 1.04; }
  .hero-lead { font-size: 0.98rem; line-height: 1.55; }
  .hero-price { line-height: 1.45; }
  .hero-actions { gap: 9px; }
  .hero-actions .btn { min-height: 50px; padding: 13px 14px; }
  .microcopy { font-size: 12px; line-height: 1.45; }
  .hero-offer { padding: 20px; border-radius: 20px; }
  .hero-offer .offer-price { font-size: 2.45rem; margin-top: 8px; }
  .hero-offer .offer-rule { margin: 17px 0; }
  .dark-section .section-heading { margin-bottom: 26px; }
  .dark-section .feature-grid { display: block; }
  .dark-section .feature-card { background: transparent; border: 0; border-bottom: 1px solid rgba(255,255,255,.12); border-radius: 0; padding: 21px 0; }
  .dark-section .feature-card:first-child { padding-top: 4px; }
  .dark-section .feature-card:last-child { border-bottom: 0; padding-bottom: 0; }
  .dark-section .feature-number { margin-bottom: 8px; }
  .dark-section .feature-card h3 { margin-bottom: 7px; }
  .dark-section .feature-card p { line-height: 1.6; }
  .step-card, .fit-card, .pricing-card, .math-card { padding: 22px; }
  .section-heading { margin-bottom: 32px; }
  .section-kicker { margin-bottom: 14px; }
  .quote-card { margin: 28px 0; padding: 22px; }
}