:root {
  color-scheme: light;
  --surface: #faf9fb;
  --card: #ffffff;
  --ink: #1b1b1f;
  --ink-soft: #45464f;
  --slate: #757680;
  --outline: #c5c6d0;
  --primary: #005c9e;
  --primary-soft: #d1e4ff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--surface);
  color: var(--ink);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, sans-serif;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

.page-width {
  width: min(760px, calc(100% - 40px));
  margin-inline: auto;
}

.site-header {
  padding: 28px 0;
}

.site-header a {
  color: var(--ink);
  font-weight: 700;
  letter-spacing: -0.035em;
  text-decoration: none;
}

main {
  padding: 64px 0 100px;
}

h1,
h2,
h3 {
  letter-spacing: -0.045em;
  line-height: 1.3;
}

h1 {
  margin: 0 0 14px;
  font-size: clamp(2rem, 5vw, 3.2rem);
}

.updated {
  margin: 0 0 58px;
  color: var(--slate);
  font-size: 0.88rem;
}

h2 {
  margin: 52px 0 14px;
  font-size: 1.42rem;
}

h3 {
  margin: 28px 0 8px;
  font-size: 1.05rem;
}

p,
ul,
ol {
  margin: 0 0 16px;
}

ul,
ol {
  padding-left: 1.35em;
}

li + li {
  margin-top: 7px;
}

.site-footer {
  padding: 24px 0 34px;
  border-top: 1px solid var(--outline);
  color: var(--slate);
  font-size: 0.82rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.footer-links a {
  font-weight: 600;
  text-decoration: none;
}

.footer-links a:hover {
  text-decoration: underline;
}

a:focus-visible {
  outline: 3px solid var(--primary-soft);
  outline-offset: 3px;
}

@media (max-width: 560px) {
  .page-width {
    width: min(100% - 32px, 520px);
  }

  main {
    padding-top: 42px;
  }

  .updated {
    margin-bottom: 42px;
  }

  .footer-links {
    flex-direction: column;
    gap: 8px;
  }
}