:root {
  --bg: #171717;
  --text: #e6e6e6;
  --muted: #9b9b9b;
  --accent: #cfcfcf;
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont,
               "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 5rem 1.75rem 6rem;
}

header {
  margin-bottom: 3.5rem;
}

h1 {
  font-size: 2.1rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  margin: 0;
}

section {
  margin-bottom: 3.25rem;
}

h2 {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 1.25rem 0;
}

p {
  margin: 0 0 1.25rem 0;
  max-width: 65ch;
}

p:last-child {
  margin-bottom: 0;
}

footer {
  margin-top: 4rem;
}

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.25);
}

a:hover {
  border-bottom-color: rgba(255, 255, 255, 0.6);
}