:root{
  --bg:#0F172A;
  --fg:#E5E7EB;
  --muted:#94a3b8;
  --accent:#00D8FF;
  --card:#111827;
  --border:#1f2937;
}

*{box-sizing:border-box}

html,body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--fg);
  font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  line-height:1.55;
}

a{color:var(--accent);text-decoration:none}
img{display:block;max-width:100%;height:auto}
.container{max-width:1100px;margin:0 auto;padding:0 20px}

/* Header */
.site-header{
  position:static;
  border-bottom:1px solid var(--border);
  background:rgba(15,23,42,.98);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:12px 0;
  gap:16px;
  white-space:nowrap;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  min-width:0;
}
.brand span{
  font-size:1.5rem;
  font-weight:700;
  color:var(--accent);
}
.brand .logo{
  width:32px;
  height:32px;
  border-radius:8px;
  object-fit:contain;
}

/* Nav */
.nav{
  display:flex;
  gap:16px;
  align-items:center;
  flex-wrap:nowrap;
}
.nav a{color:var(--fg);opacity:.9}
.nav a:hover{opacity:1}

/* Hamburger */
.menu-toggle{
  display:none;
  border:none;
  background:transparent;
  padding:8px;
  line-height:0;
}
.menu-toggle span{
  display:block;
  width:22px;
  height:2px;
  background:var(--fg);
  opacity:.9;
  margin:4px 0;
  border-radius:2px;
}

/* Hero */
.hero{
  padding:64px 0 36px;
  border-bottom:1px solid var(--border);
}
.hero-inner{text-align:center}
.eyebrow{
  color:var(--muted);
  font-size:14px;
  margin:0 0 8px;
}
.hero h1{
  margin:0 0 12px;
  font-size:clamp(30px,4.4vw,46px);
}
.hero .accent{color:var(--accent)}
.lead{
  color:var(--muted);
  max-width:780px;
  margin:0 auto;
}
.trust{
  margin-top:8px;
  color:var(--muted);
  font-size:14px;
}

/* Sections */
.section{
  padding:48px 0;
  border-bottom:1px solid var(--border);
}
.section h2{
  font-size:clamp(22px,3.2vw,32px);
  margin:0 0 12px;
}
.bullets{
  margin:0;
  padding-left:20px;
}
.bullets li{margin-bottom:6px}

.grid4{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:14px;
  margin-top:14px;
}
.feature{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:14px;
  padding:14px;
}
.feature h3{
  margin:0 0 6px;
  font-size:16px;
}
.note{
  color:var(--muted);
  margin-top:12px;
}
.steps{
  margin:12px 0 0 0;
  padding-left:20px;
}

/* FLOW SECTION */
.section-flow{
  border-bottom:1px solid var(--border);
  text-align:center;           /* centra el título en toda la sección */
}
.flow-heading{
  margin:0 0 16px;
  font-size:clamp(22px,3.2vw,32px);
  font-weight:700;
}

/* Flow box */
.flow-box{
  margin-top:18px;
  padding:14px 18px;
  border-radius:16px;
  border:1px solid var(--accent);
  background:radial-gradient(circle at top left, rgba(0,216,255,.08), var(--card));
  max-width:780px;
  margin-left:auto;
  margin-right:auto;
  font-size:15px;
  line-height:1.6;
  text-align:left;             /* texto del cuadro alineado a la izquierda */
}

/* CTA section */
.cta-section{
  padding:56px 0;
  background:linear-gradient(180deg,rgba(0,216,255,.07),transparent);
}
.cta-section .container{text-align:center}

/* Footer */
.footer{
  padding:28px 0 36px;
  color:var(--muted);
  border-top:1px solid var(--border);
}
.footer-inner{
  display:flex;
  flex-direction:column;
  gap:12px;
  align-items:center;
  justify-content:center;
}
.footer-brand{
  display:flex;
  gap:10px;
  align-items:center;
  justify-content:center;
  flex-wrap:wrap;
}
.footer-logo{
  width:28px;
  height:28px;
  object-fit:contain;
  opacity:0.9;
}
.smallprint{
  margin:6px 0 0 0;
  font-size:12px;
  line-height:1.4;
  text-align:center;
}

/* Buttons */
.btn{
  display:inline-block;
  padding:12px 16px;
  border-radius:12px;
  border:1px solid var(--border);
  font-weight:600;
  transition:transform .05s ease,opacity .2s ease;
}
.btn.primary{
  background:var(--accent);
  color:#002133;
  border-color:transparent;
}
.btn.secondary{
  background:transparent;
  color:var(--fg);
}
.btn:hover{transform:translateY(-1px)}

/* Responsive */
@media (max-width:1100px){
  .menu-toggle{
    display:inline-flex;
    align-items:center;
    justify-content:center;
  }
  .nav{
    position:absolute;
    right:20px;
    top:56px;
    background:rgba(15,23,42,.98);
    border:1px solid var(--border);
    border-radius:12px;
    padding:10px;
    display:none;
    flex-direction:column;
    gap:10px;
    min-width:210px;
  }
  .nav.open{display:flex}
}

/* tablet */
@media (max-width:900px){
  .grid4{grid-template-columns:1fr 1fr}
}

/* mobile */
@media (max-width:600px){
  .grid4{grid-template-columns:1fr}
  .section{
    padding:40px 0;
  }
  .hero{
    padding:52px 0 30px;
  }
  .container{
    padding:0 16px;
  }
  .flow-box{
    padding:12px 14px;
    font-size:14px;
  }
}