:root{
  --navy: #0B2A52;
  --navy-deep: #081F3D;
  --teal: #14B7AC;
  --teal-deep: #0C8F86;
  --bg: #F7FAFB;
  --bg-alt: #EEF5F7;
  --panel: #FFFFFF;
  --ink: #10222E;
  --ink-soft: #4C6472;
  --line: #DCE7EA;
  --good: #2E7D5B;
  --good-soft: #E4F1EA;
  --shadow: 0 1px 2px rgba(14,42,64,.06), 0 10px 30px rgba(14,42,64,.06);
  --radius: 12px;
  --font-display: "Archivo", system-ui, sans-serif;
  --font-body: "IBM Plex Sans", system-ui, sans-serif;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *{animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important;}
}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--font-body);font-size:16px;line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img,svg{max-width:100%;display:block;}
a{color:var(--teal-deep);}
.container{max-width:1180px;margin:0 auto;padding:0 24px;}
h1,h2,h3,h4{font-family:var(--font-display);color:var(--navy);margin:0;text-wrap:balance;line-height:1.12;}
p{margin:0;}
.skip-link{position:absolute;left:-999px;top:0;background:var(--navy);color:#fff;padding:10px 16px;z-index:200;border-radius:0 0 8px 0;}
.skip-link:focus{left:0;}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-display);font-size:.72rem;font-weight:700;
  text-transform:uppercase;letter-spacing:.09em;color:var(--teal-deep);
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--teal);display:inline-block;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:var(--font-display);font-weight:700;font-size:.94rem;
  padding:13px 24px;border-radius:8px;border:1px solid transparent;
  cursor:pointer;text-decoration:none;transition:transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.btn:hover{transform:translateY(-1px);}
.btn-primary{background:var(--teal);color:#04222c;box-shadow:0 6px 18px rgba(23,171,203,.35);}
.btn-primary:hover{background:var(--teal-deep);color:#fff;}
.btn-ghost{background:transparent;color:var(--navy);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--navy);background:var(--bg-alt);}
.btn-block{width:100%;}

/* ---------------- header ---------------- */
header.site{
  position:sticky;top:0;z-index:100;
  background:rgba(247,250,251,.86);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-row{display:flex;align-items:center;justify-content:space-between;padding:14px 24px;}
.brand{display:flex;align-items:center;text-decoration:none;}
.brand-logo{height:34px;width:auto;display:block;}
nav.primary{display:flex;align-items:center;gap:28px;}
nav.primary a{color:var(--ink-soft);text-decoration:none;font-size:.92rem;font-weight:500;}
nav.primary a:hover{color:var(--navy);}
.nav-cta{display:flex;align-items:center;gap:14px;}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:6px;flex:none;}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--navy);margin:5px 0;transition:transform .2s ease, opacity .2s ease;}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.open span:nth-child(2){opacity:0;}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

#mobileNav{
  display:none;flex-direction:column;gap:2px;
  padding:6px 24px 22px;border-top:1px solid var(--line);
  background:var(--bg);
}
#mobileNav.open{display:flex;}
#mobileNav a{padding:12px 2px;border-bottom:1px solid var(--line);font-size:.96rem;}
#mobileNav a.btn{border-bottom:none;margin-top:14px;justify-content:center;}

/* ---------------- hero ---------------- */
.hero{padding:76px 0 60px;}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;}
.hero h1{font-size:clamp(2.1rem, 4vw, 3.1rem);}
.hero .lede{font-size:1.12rem;color:var(--ink-soft);max-width:52ch;margin-top:18px;}
.hero .cta-row{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap;}
.trust-strip{display:flex;gap:26px;margin-top:38px;flex-wrap:wrap;}
.trust-item{display:flex;align-items:center;gap:8px;font-size:.82rem;color:var(--ink-soft);font-weight:500;}
.trust-item .dot{width:7px;height:7px;border-radius:50%;background:var(--teal);flex:none;}

.hero-stats{display:flex;gap:34px;margin-top:38px;flex-wrap:wrap;}
.hero-stats .stat-pill{display:flex;flex-direction:column;}
.hero-stats .n{font-family:var(--font-display);font-weight:800;font-size:1.5rem;color:var(--teal-deep);font-variant-numeric:tabular-nums;line-height:1.15;}
.hero-stats .l{font-size:.78rem;color:var(--ink-soft);margin-top:3px;max-width:15ch;}

.hero-visual{
  background:linear-gradient(160deg, var(--navy) 0%, var(--teal-deep) 100%);
  border-radius:20px;padding:36px;position:relative;overflow:hidden;
  box-shadow:0 20px 50px rgba(10,39,64,.28);
  aspect-ratio:1/1;display:flex;align-items:center;justify-content:center;
}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 30% 20%, rgba(255,255,255,.14), transparent 55%);
}
.gauge-cluster{position:relative;z-index:1;display:grid;grid-template-columns:repeat(3,1fr);gap:14px;width:100%;}
.gauge-unit{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);border-radius:10px;padding:14px 10px;text-align:center;}
.gauge-unit svg{width:34px;height:34px;margin:0 auto 8px;}
.gauge-unit .val{font-family:var(--font-display);color:#fff;font-weight:700;font-size:1rem;font-variant-numeric:tabular-nums;}
.gauge-unit .lbl{font-size:.65rem;color:rgba(255,255,255,.7);text-transform:uppercase;letter-spacing:.06em;margin-top:2px;}

/* ---------------- sections ---------------- */
section{padding:84px 0;}
.section-head{max-width:640px;margin:0 auto 44px;text-align:center;}
.section-head.left{margin:0 0 40px;text-align:left;}
.section-head h2{font-size:clamp(1.7rem, 3vw, 2.2rem);}
.section-head p{color:var(--ink-soft);font-size:1.02rem;margin-top:12px;}
.alt-bg{background:var(--bg-alt);}

/* ---------------- segment cards ---------------- */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;box-shadow:var(--shadow);
}
.card .icon{
  width:44px;height:44px;border-radius:10px;background:var(--bg-alt);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.card .icon svg{width:22px;height:22px;stroke:var(--teal-deep);}
.card h3{font-size:1.05rem;margin-bottom:8px;}
.card p{font-size:.9rem;color:var(--ink-soft);}
.card .tag{
  display:inline-block;font-size:.65rem;text-transform:uppercase;letter-spacing:.07em;font-weight:700;
  color:var(--teal-deep);background:var(--bg-alt);padding:3px 9px;border-radius:20px;margin-top:12px;
}

/* ---------------- callout box ---------------- */
.box{border-radius:var(--radius);padding:22px 26px;box-shadow:var(--shadow);border:1px solid var(--line);background:var(--panel);}
.box.tip{border-left:3px solid var(--good);background:var(--good-soft);}
.box .tag{display:block;font-family:var(--font-display);font-size:.68rem;text-transform:uppercase;letter-spacing:.08em;font-weight:700;color:var(--good);}
.box p{font-size:.92rem;color:var(--ink-soft);margin:0;max-width:none;}
.box p b{color:var(--ink);}

/* ---------------- model compare ---------------- */
.model-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:30px 28px;box-shadow:var(--shadow);}
.model-card.hi{border:2px solid var(--teal);position:relative;}
.model-card.hi::before{
  content:"Recomendado";position:absolute;top:-13px;right:24px;
  background:var(--teal);color:#04222c;font-family:var(--font-display);font-weight:700;
  font-size:.68rem;text-transform:uppercase;letter-spacing:.06em;padding:5px 12px;border-radius:20px;
}
.model-card h3{font-size:1.2rem;margin-bottom:6px;}
.model-card .sub{color:var(--ink-soft);font-size:.88rem;margin-bottom:18px;display:block;}
.model-card ul{margin:0;padding-left:1.15em;font-size:.92rem;color:var(--ink-soft);}
.model-card li{margin-bottom:10px;}
.model-card li b{color:var(--ink);}

/* ---------------- process ---------------- */
.process{display:flex;flex-direction:column;}
.step-row{display:grid;grid-template-columns:64px 1fr;gap:20px;padding:26px 0;border-bottom:1px solid var(--line);}
.step-row:last-child{border-bottom:none;}
.step-num{
  width:52px;height:52px;border-radius:50%;background:var(--navy);color:#fff;
  display:flex;align-items:center;justify-content:center;font-family:var(--font-display);
  font-weight:700;font-size:1.15rem;
}
.step-row h3{font-size:1.08rem;margin-bottom:6px;}
.step-row p{color:var(--ink-soft);font-size:.93rem;max-width:60ch;}

/* ---------------- calculator ---------------- */
.calc-panel{
  background:var(--panel);border:1px solid var(--line);border-radius:16px;
  box-shadow:var(--shadow);padding:40px;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;
}
.calc-input label{display:block;font-family:var(--font-display);font-weight:700;font-size:.92rem;color:var(--navy);margin-bottom:10px;}
.calc-input input[type="range"]{width:100%;accent-color:var(--teal-deep);}
.calc-input .n{font-family:var(--font-display);font-size:2.4rem;color:var(--teal-deep);font-variant-numeric:tabular-nums;margin-top:10px;}
.calc-input .n span{font-size:1rem;color:var(--ink-soft);font-family:var(--font-body);}
.calc-out{display:flex;flex-direction:column;gap:16px;}
.calc-line{display:flex;justify-content:space-between;align-items:baseline;padding:14px 18px;background:var(--bg-alt);border-radius:10px;}
.calc-line .k{font-size:.85rem;color:var(--ink-soft);}
.calc-line .v{font-family:var(--font-display);font-weight:700;color:var(--navy);font-variant-numeric:tabular-nums;}
.calc-note{font-size:.78rem;color:var(--ink-soft);}

/* ---------------- differentiators ---------------- */
.grid-6{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.diff-item{display:flex;gap:14px;padding:20px 0;}
.diff-item .icon{width:38px;height:38px;border-radius:9px;background:var(--navy);display:flex;align-items:center;justify-content:center;flex:none;}
.diff-item .icon svg{width:19px;height:19px;stroke:#fff;}
.diff-item h4{font-size:.98rem;margin-bottom:5px;}
.diff-item p{font-size:.87rem;color:var(--ink-soft);}

/* ---------------- FAQ ---------------- */
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;text-align:left;background:none;border:none;cursor:pointer;
  padding:20px 0;display:flex;justify-content:space-between;align-items:center;gap:16px;
  font-family:var(--font-display);font-weight:700;color:var(--navy);font-size:1rem;
}
.faq-q .plus{font-size:1.3rem;color:var(--teal-deep);transition:transform .2s ease;flex:none;}
.faq-item[open] .plus{transform:rotate(45deg);}
.faq-a{padding:0 0 22px;color:var(--ink-soft);font-size:.93rem;max-width:70ch;}
.faq-item summary{list-style:none;}
.faq-item summary::-webkit-details-marker{display:none;}

/* ---------------- contact ---------------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;}
.contact-info h2{font-size:1.9rem;}
.contact-info p{color:var(--ink-soft);margin-top:14px;max-width:44ch;}
.contact-channels{margin-top:26px;display:flex;flex-direction:column;gap:14px;}
.channel{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);font-size:.94rem;}
.channel .icon{width:38px;height:38px;border-radius:9px;background:var(--bg-alt);display:flex;align-items:center;justify-content:center;flex:none;}
.channel .icon svg{width:18px;height:18px;stroke:var(--teal-deep);}
.form-card{background:var(--panel);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);padding:32px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:.82rem;font-weight:600;color:var(--navy);margin-bottom:7px;}
.field input, .field select, .field textarea{
  width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:8px;
  font-family:var(--font-body);font-size:.92rem;background:var(--bg);color:var(--ink);
}
.field input:focus, .field select:focus, .field textarea:focus{outline:2px solid var(--teal);outline-offset:1px;}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.form-note{font-size:.78rem;color:var(--ink-soft);margin-top:12px;text-align:center;}

/* ---------------- footer ---------------- */
footer.site{background:var(--navy-deep);color:rgba(255,255,255,.72);padding:56px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-logo{height:30px;filter:brightness(0) invert(1);}
.footer-grid p{font-size:.86rem;line-height:1.6;max-width:34ch;}
.footer-col h5{font-family:var(--font-display);color:#fff;font-size:.82rem;text-transform:uppercase;letter-spacing:.07em;margin-bottom:14px;}
.footer-col a{display:block;color:rgba(255,255,255,.72);text-decoration:none;font-size:.88rem;margin-bottom:10px;}
.footer-col a:hover{color:#fff;}
.footer-legal{
  border-top:1px solid rgba(255,255,255,.14);margin-top:40px;padding-top:22px;
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
}
.footer-legal .merxcon-logo{height:20px;width:auto;flex:none;opacity:.92;}
.footer-legal p{margin:0;font-size:.78rem;color:rgba(255,255,255,.62);max-width:62ch;}
.footer-legal strong{color:rgba(255,255,255,.88);font-weight:700;}
.footer-bottom{margin-top:18px;padding-top:0;display:flex;justify-content:space-between;font-size:.78rem;color:rgba(255,255,255,.5);flex-wrap:wrap;gap:10px;}

/* ---------------- reveal ---------------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease, transform .6s ease;}
.reveal.in{opacity:1;transform:none;}

/* ---------------- pull quote ---------------- */
.pull-quote{
  padding:64px 0;
  background:linear-gradient(160deg, var(--navy) 0%, var(--teal-deep) 100%);
}
.pull-quote p{
  font-family:var(--font-display);font-weight:800;color:#fff;
  font-size:clamp(1.5rem, 3.6vw, 2.3rem);text-align:center;
  max-width:20ch;margin:0 auto;text-wrap:balance;
}

/* ---------------- back to top ---------------- */
.back-to-top{
  position:fixed;right:22px;bottom:92px;z-index:149;
  width:44px;height:44px;border-radius:50%;border:none;cursor:pointer;
  background:var(--navy);display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 20px rgba(10,39,64,.28);
  opacity:0;pointer-events:none;transform:translateY(8px);
  transition:opacity .2s ease, transform .2s ease, background .15s ease;
}
.back-to-top.visible{opacity:1;pointer-events:auto;transform:none;}
.back-to-top:hover{background:var(--teal-deep);}
.back-to-top svg{width:18px;height:18px;stroke:#fff;}
@media (max-width:640px){
  .back-to-top{right:16px;bottom:80px;width:40px;height:40px;}
}

/* ---------------- whatsapp float ---------------- */
.whatsapp-float{
  position:fixed;right:22px;bottom:22px;z-index:150;
  width:58px;height:58px;border-radius:50%;
  background:#25D366;display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 26px rgba(10,39,64,.32);
  transition:transform .15s ease, box-shadow .15s ease;
}
.whatsapp-float:hover{transform:scale(1.07);box-shadow:0 14px 32px rgba(10,39,64,.4);}
.whatsapp-float svg{width:28px;height:28px;stroke:#fff;fill:none;}
@media (max-width:640px){
  .whatsapp-float{right:16px;bottom:16px;width:52px;height:52px;}
  .whatsapp-float svg{width:25px;height:25px;}
}

/* ---------------- responsive ---------------- */
@media (max-width:960px){
  .hero-grid{grid-template-columns:1fr;}
  .hero-visual{max-width:420px;margin:0 auto;}
  .grid-4, .grid-3, .grid-6{grid-template-columns:repeat(2,1fr);}
  .grid-2, .compare, .calc-panel, .contact-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  nav.primary{display:none;}
  .nav-toggle{display:block;}
  .nav-cta .btn-primary{display:none;}
}
@media (max-width:640px){
  .grid-4, .grid-3, .grid-6, .footer-grid{grid-template-columns:1fr;}
  .field-row{grid-template-columns:1fr;}
  section{padding:60px 0;}
  .calc-panel{padding:26px;}
}