:root {
  color-scheme: dark;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #03091d;
  color: #f5f6ff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 78% 14%, rgba(110, 106, 224, 0.30), transparent 36rem),
    radial-gradient(circle at 18% 84%, rgba(49, 91, 212, 0.22), transparent 34rem),
    #03091d;
}

main {
  width: min(760px, calc(100% - 40px));
  margin: 0 auto;
  padding: 72px 0 96px;
}

.eyebrow {
  margin: 0 0 12px;
  color: #bcbaff;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  max-width: 680px;
  font-size: clamp(2.5rem, 8vw, 5.2rem);
  line-height: 0.98;
  letter-spacing: -0.045em;
}

h2 {
  margin: 0 0 12px;
  font-size: 1.3rem;
}

p, li {
  color: rgba(245, 246, 255, 0.76);
  font-size: 1.02rem;
  line-height: 1.68;
}

.intro {
  max-width: 650px;
  margin: 28px 0 0;
  font-size: 1.16rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 40px;
}

.card {
  padding: 24px;
  border: 1px solid rgba(188, 186, 255, 0.22);
  border-radius: 22px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.09), rgba(39, 58, 130, 0.09));
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.28);
}

.stack { margin-top: 16px; }

a {
  color: #c8c6ff;
  font-weight: 650;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

a:hover { color: #ffffff; }

.button {
  display: inline-block;
  margin-top: 8px;
  padding: 12px 18px;
  border: 1px solid rgba(255, 255, 255, 0.32);
  border-radius: 999px;
  background: linear-gradient(90deg, #385fd7, #746edc);
  color: #ffffff;
  text-decoration: none;
}

footer {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.13);
  color: rgba(245, 246, 255, 0.58);
  font-size: 0.9rem;
}

@media (max-width: 520px) {
  main { padding-top: 48px; }
  .card { padding: 20px; }
}