:root {
  --midnight: #07111f;
  --text: #0b0d12;
  --text-muted: #5b6472;
  --blue: #5b86ea;
  --surface: #ffffff;
  --surface-tinted: #eef1f6;
  --border: #eceef1;
  --max-width: 42rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: Inter, 'Avenir Next', 'Helvetica Neue', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--surface-tinted);
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

header {
  margin-bottom: 2rem;
}

.brand {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--blue);
  text-decoration: none;
}

h1 {
  margin: 0.5rem 0 0;
  font-size: 1.75rem;
  line-height: 1.25;
}

.updated {
  margin: 0.75rem 0 0;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.5rem;
}

.card > :first-child {
  margin-top: 0;
}

.card > :last-child {
  margin-bottom: 0;
}

h2 {
  margin: 1.75rem 0 0.5rem;
  font-size: 1.125rem;
}

p,
ul {
  margin: 0.75rem 0;
}

ul {
  padding-left: 1.25rem;
}

li + li {
  margin-top: 0.35rem;
}

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

footer {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.875rem;
}

footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
}

footer a {
  font-weight: 600;
}