:root {
  color-scheme: dark;
  color: #f8fafc;
  background: #020617;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top, rgba(96, 165, 250, 0.18), transparent 30%),
    radial-gradient(circle at 20% 10%, rgba(34, 197, 94, 0.12), transparent 22%),
    #020617;
  color: #f8fafc;
}

a {
  color: inherit;
  text-decoration: none;
}

.page-shell {
  padding: 48px 24px;
  max-width: 1080px;
  margin: 0 auto;
}

.hero {
  display: grid;
  gap: 32px;
  align-items: start;
  grid-template-columns: minmax(0, 1.5fr) minmax(280px, 1fr);
}

.eyebrow {
  margin: 0 0 18px;
  color: #7dd3fc;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 0.78rem;
  font-weight: 700;
}

h1 {
  margin: 0;
  font-size: clamp(3rem, 5vw, 4.75rem);
  line-height: 0.95;
}

.tagline {
  margin: 24px 0 0;
  max-width: 54rem;
  font-size: 1.1rem;
  line-height: 1.85;
  color: #cbd5e1;
}

.actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 30px;
}

.button,
.secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 22px;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
}

.button {
  background: linear-gradient(135deg, #38bdf8 0%, #22c55e 100%);
  color: #020617;
}

.button:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 40px rgba(56, 189, 248, 0.18);
}

.secondary {
  border: 1px solid rgba(148, 163, 184, 0.3);
  color: #e2e8f0;
}

.secondary:hover {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.04);
}

.hero-card {
  border: 1px solid rgba(148, 163, 184, 0.14);
  border-radius: 32px;
  padding: 28px;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(18px);
}

.card-header {
  font-size: 0.95rem;
  color: #7dd3fc;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.card-body ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 16px;
}

.card-body li {
  padding: 16px;
  border-radius: 18px;
  background: rgba(148, 163, 184, 0.08);
}

.feature-grid {
  display: grid;
  gap: 28px;
  margin-top: 52px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.feature-grid article {
  border: 1px solid rgba(148, 163, 184, 0.12);
  border-radius: 28px;
  padding: 28px;
  background: rgba(15, 23, 42, 0.8);
}

.feature-grid h2 {
  margin-top: 0;
  font-size: 1.2rem;
}

.feature-grid p {
  margin: 16px 0 0;
  color: #cbd5e1;
  line-height: 1.75;
}

footer {
  text-align: center;
  margin: 64px auto 0;
  color: #94a3b8;
}

footer a {
  color: #7dd3fc;
}

@media (max-width: 840px) {
  .hero {
    grid-template-columns: 1fr;
  }
}