:root {
  color-scheme: dark;
  font-family:
    Charter, "Bitstream Charter", "Sitka Text", Cambria, Georgia, serif;
  background: #071018;
  color: #dbe8ef;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 15% 0%, rgba(17, 185, 216, 0.15), transparent 34rem),
    #071018;
  line-height: 1.65;
}

main {
  width: min(70ch, calc(100% - 2rem));
  margin: 0 auto;
  padding: 4rem 0 6rem;
}

nav {
  display: flex;
  gap: 1rem;
  margin-bottom: 3rem;
  color: #8aa0ad;
  font-size: 0.95rem;
}

h1,
h2 {
  line-height: 1.2;
  color: #f4fbff;
}

h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(2.2rem, 7vw, 4rem);
  letter-spacing: -0.035em;
}

h2 {
  margin-top: 2.5rem;
  font-size: 1.25rem;
}

p,
li {
  color: #b9cbd5;
}

a {
  color: #5fe0ef;
}

.eyebrow,
.effective {
  color: #75f5af;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.effective {
  margin-bottom: 2.5rem;
  font-size: 0.8rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.card {
  display: block;
  padding: 1.25rem;
  border: 1px solid #263946;
  border-radius: 1rem;
  background: rgba(13, 28, 38, 0.78);
  color: #f4fbff;
  text-decoration: none;
}

.card span {
  display: block;
  margin-top: 0.4rem;
  color: #8fa6b3;
  font-size: 0.92rem;
}