:root {
  font-family: system-ui, sans-serif;
  color: #1f2937;
  background: #ffffff;
  line-height: 1.5;
}

* {
  box-sizing: border-box;
}

body {
  width: min(calc(100% - 2rem), 48rem);
  margin: 0 auto;
  padding: clamp(1.5rem, 6vw, 3rem) 0;
}

h1,
h2 {
  line-height: 1.2;
}

.site-header {
  padding-bottom: 1.5rem;
  border-bottom: 1px solid #d1d5db;
}

h1 {
  margin: 0;
  font-size: 2rem;
}

main {
  padding-top: 2rem;
}

h2 {
  margin: 0 0 1rem;
  font-size: 1.25rem;
}

.site-list {
  display: grid;
  gap: 0.75rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.site-link {
  display: flex;
  align-items: center;
  min-height: 3.25rem;
  padding: 0.75rem 1rem;
  border: 1px solid #bfdbfe;
  border-radius: 0.5rem;
  color: #1d4ed8;
  font-weight: 600;
  text-decoration: none;
  background: #eff6ff;
}

.site-link:hover {
  border-color: #2563eb;
  background: #dbeafe;
}

.site-link:focus-visible {
  outline: 3px solid #60a5fa;
  outline-offset: 3px;
}

@media (min-width: 42rem) {
  .site-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}