body {
  font-family: system-ui, sans-serif;
  margin: 0;
  color: #1d1d1f;
}
.site-header {
  display: flex;
  justify-content: space-between;
  padding: 16px 24px;
  background: #111;
}
.site-header a {
  color: #fff;
  text-decoration: none;
  margin-right: 12px;
}
main {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px;
}
.hero {
  padding: 48px 0;
}
.btn {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 6px;
  border: 1px solid #333;
  background: #fff;
  cursor: pointer;
  text-decoration: none;
  color: #111;
}
.btn-primary {
  background: #2563eb;
  color: #fff;
  border-color: #2563eb;
}
.pricing {
  display: flex;
  gap: 16px;
}
.plan {
  border: 1px solid #ddd;
  padding: 16px;
  border-radius: 8px;
  flex: 1;
}
.plan-featured {
  border-color: #2563eb;
}
.promo-banner {
  background: #fde68a;
  padding: 12px;
  margin-top: 16px;
}
.site-footer {
  padding: 24px;
  text-align: center;
  color: #666;
}

.checkout {
  display: grid;
  gap: 10px;
  max-width: 420px;
  margin-top: 32px;
}
.checkout label {
  display: grid;
  gap: 4px;
  font-size: 14px;
}
.checkout input:not([type='checkbox']) {
  padding: 8px 10px;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  font: inherit;
}