:root {
  --green: #128c7e;
  --green-dark: #075e54;
  --bg-dark: #0b141a;
  --bg-panel: #111b21;
  --text-light: #f2f2f2;
  --text-muted: #9fb0b8;
  --card-bg: #17232a;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: "Segoe UI", Helvetica, Arial, sans-serif;
  background: var(--bg-dark);
  color: var(--text-light);
  line-height: 1.5;
}

.section-inner {
  max-width: 1000px;
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

/* Nav */
.nav {
  position: sticky;
  top: 0;
  background: rgba(11, 20, 26, 0.9);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid #1f2c33;
  z-index: 10;
}
.nav-inner {
  max-width: 1000px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.brand {
  font-weight: 700;
  font-size: 1.1rem;
}
.brand span { color: var(--green); }
.nav-cta {
  background: var(--green);
  color: white;
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 600;
}

/* Hero */
.hero {
  padding: 6rem 1.5rem 4rem;
  text-align: center;
  background: radial-gradient(circle at 50% -20%, #123a35, var(--bg-dark) 60%);
}
.hero-inner { max-width: 720px; margin: 0 auto; }
.hero h1 {
  font-size: 2.6rem;
  line-height: 1.15;
  margin-bottom: 1.2rem;
}
.hero-sub {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}
.cta-primary {
  display: inline-block;
  background: var(--green);
  color: white;
  text-decoration: none;
  padding: 0.9rem 1.8rem;
  border-radius: 28px;
  font-weight: 600;
  font-size: 1.05rem;
}

/* Problema */
.problema { background: var(--bg-panel); }
.problema h2, .solucion h2, .demo-section h2, .para-quien h2, .pricing h2 {
  text-align: center;
  font-size: 1.7rem;
  margin-bottom: 2.2rem;
}
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.2rem;
}
.card {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 1.6rem;
  text-align: center;
}
.card-num {
  font-size: 2rem;
  font-weight: 700;
  color: var(--green);
  margin-bottom: 0.5rem;
}
.card p { color: var(--text-muted); font-size: 0.95rem; }

/* Solucion */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}
.feature h3 { margin-bottom: 0.5rem; font-size: 1.1rem; }
.feature p { color: var(--text-muted); font-size: 0.95rem; }

/* Demo */
.demo-section { background: var(--bg-panel); text-align: center; }
.demo-sub {
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 2.2rem;
}
.demo-frame-wrap {
  display: flex;
  justify-content: center;
}
.demo-frame {
  width: 420px;
  height: 700px;
  max-width: 100%;
  border: none;
  border-radius: 16px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

/* Para quien */
.para-quien-sub {
  text-align: center;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 2rem;
}
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: center;
}
.chips span {
  background: var(--card-bg);
  border: 1px solid #26343c;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
  color: var(--text-light);
}

/* Pricing */
.pricing { background: var(--bg-panel); }
.pricing-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  max-width: 700px;
  margin: 0 auto;
}
.price-card {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 1.8rem;
  text-align: center;
}
.price-label {
  color: var(--text-muted);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.4rem;
}
.price-amount {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--green);
  margin-bottom: 0.8rem;
}
.price-card p { color: var(--text-muted); font-size: 0.9rem; }
.price-note {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 1.5rem;
}

/* Footer */
.footer {
  text-align: center;
  padding: 3rem 1.5rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}
.footer .brand { margin-bottom: 0.5rem; justify-content: center; display: block; }

@media (max-width: 600px) {
  .hero h1 { font-size: 2rem; }
  .demo-frame { height: 600px; }
}