:root {
  --bg: #ffffff;
  --fg: #1c1c1e;
  --fg-secondary: #3c3c43;
  --fg-tertiary: #8e8e93;
  --hairline: #e5e5ea;
  --accent: #007aff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --fg: #ffffff;
    --fg-secondary: #ebebf5;
    --fg-tertiary: #8e8e93;
    --hairline: #38383a;
    --accent: #0a84ff;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.5;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

h1 {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.4px;
  margin: 0 0 8px;
}

h2 {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: -0.2px;
  margin: 32px 0 8px;
  color: var(--fg);
}

p, li {
  font-size: 15px;
  color: var(--fg-secondary);
  line-height: 1.6;
}

.last-updated {
  font-size: 13px;
  color: var(--fg-tertiary);
  margin: 0 0 16px;
  font-weight: 500;
}

.intro {
  font-size: 15px;
  color: var(--fg-secondary);
  margin: 0 0 32px;
}

ul.links {
  list-style: none;
  padding: 0;
  margin: 24px 0;
}
ul.links li {
  padding: 14px 0;
  border-bottom: 1px solid var(--hairline);
}
ul.links a {
  font-size: 17px;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
}

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

.back {
  display: inline-block;
  margin-bottom: 24px;
  color: var(--fg-tertiary);
  font-weight: 600;
  text-decoration: none;
  font-size: 15px;
}

strong { color: var(--fg); font-weight: 700; }

.contact {
  margin-top: 48px;
  font-size: 13px;
  color: var(--fg-tertiary);
}