:root {
  --ink: #22305a;
  --purple: #8e5be8;
  --sky: #cdebff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--sky);
}

main {
  max-width: 46rem;
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
}

article {
  background: #fff;
  border-radius: 1.25rem;
  padding: 1.5rem;
}

h1, h2 { color: var(--purple); line-height: 1.25; }
h1 { font-size: 1.9rem; margin: 0 0 0.25rem; }
h2 { font-size: 1.25rem; margin: 2rem 0 0.5rem; }

a { color: var(--purple); }

.updated { margin: 0 0 1.5rem; opacity: 0.75; }
.summary { background: #f4eefe; border-radius: 0.9rem; padding: 0.9rem 1.1rem; }
.summary ul { margin: 0.4rem 0 0; padding-left: 1.2rem; }

nav { margin-bottom: 1rem; font-weight: 600; }
nav a { margin-right: 1rem; }