:root {
  color-scheme: light dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

body {
  margin: 0;
  background: #f7f9fb;
  color: #17212b;
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 64px 24px 80px;
}

h1,
h2 {
  line-height: 1.2;
}

a {
  color: #155f9a;
}

.card {
  background: #ffffff;
  border: 1px solid #d9e1e8;
  border-radius: 16px;
  padding: 24px;
  margin: 24px 0;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 32px;
}

small {
  color: #586675;
}

.purchase-button {
  display: inline-block;
  padding: 12px 16px;
  border: 1px solid currentColor;
  border-radius: 10px;
  font-weight: 650;
  text-decoration: none;
}

.affiliate-note,
.associate-disclosure {
  max-width: 62ch;
}

@media (prefers-color-scheme: dark) {
  body {
    background: #10161c;
    color: #eef4f8;
  }

  .card {
    background: #18212a;
    border-color: #334352;
  }

  a {
    color: #78c7ff;
  }

  small {
    color: #b6c2cc;
  }
}