*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.5;
  color: #0f172a;
  background: #f8fafc;
}
body {
  margin: 0;
}
.hero {
  background: linear-gradient(165deg, #0f172a 0%, #1e3a5f 45%, #0f172a 100%);
  color: #f1f5f9;
  padding: 3rem 1.25rem 3.5rem;
}
.hero-inner {
  max-width: 40rem;
  margin: 0 auto;
}
.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #7dd3fc;
  margin: 0 0 0.75rem;
}
h1 {
  font-size: clamp(1.65rem, 4vw, 2.15rem);
  font-weight: 800;
  line-height: 1.2;
  margin: 0 0 1rem;
}
.lead {
  font-size: 1.05rem;
  color: #cbd5e1;
  margin: 0 0 1.5rem;
}
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.35rem;
  border-radius: 0.75rem;
  font-weight: 600;
  text-decoration: none;
  transition: opacity 0.15s ease;
}
.btn:hover {
  opacity: 0.92;
}
.btn-primary {
  background: #0284c7;
  color: #fff;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.35);
}
.btn-secondary {
  background: rgba(255, 255, 255, 0.12);
  color: #f1f5f9;
  border: 1px solid rgba(255, 255, 255, 0.35);
}
.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.18);
}
.hint {
  font-size: 0.85rem;
  color: #94a3b8;
  margin: 0;
}
.hint code {
  font-size: 0.8em;
  background: rgba(255, 255, 255, 0.08);
  padding: 0.1rem 0.35rem;
  border-radius: 0.25rem;
}
.grid {
  max-width: 52rem;
  margin: -2rem auto 0;
  padding: 0 1.25rem 3rem;
  display: grid;
  gap: 1rem;
}
@media (min-width: 640px) {
  .grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
.card {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 1rem;
  padding: 1.25rem 1.35rem;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.06);
}
.card h2 {
  font-size: 1rem;
  margin: 0 0 0.5rem;
  color: #0f172a;
}
.card p {
  margin: 0;
  font-size: 0.9rem;
  color: #475569;
}
.card-muted {
  background: #f8fafc;
  border-style: dashed;
}
.card-muted h2 {
  font-size: 0.95rem;
  color: #64748b;
}
.link {
  display: inline-block;
  margin-top: 0.75rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: #0284c7;
  text-decoration: none;
}
.link:hover {
  text-decoration: underline;
}
.foot {
  text-align: center;
  padding: 2rem 1rem;
  font-size: 0.85rem;
  color: #64748b;
}