:root {
  --bg: #202020;
  --fg: #F5F5F2;
  --muted: #A0A09C;
  --line: #444442;
  --max: 44rem;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
  color: var(--fg);
}

body {
  margin: 0;
  min-height: 100vh;

  display: flex;
  flex-direction: column;

  background: var(--bg);
  color: var(--fg);

  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;

  font-size: 18px;
  line-height: 1.62;
}

main,
footer {
  width: min(calc(100% - 3rem), var(--max));
  margin-inline: auto;
}

main {
  flex: 1;
  padding: 7rem 0 5rem;
}

header {
  padding-bottom: 2rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--line);
}

h1 {
  margin: 0 0 0.4rem;
  font-size: 1.7rem;
  line-height: 1.2;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.tagline {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

p {
  margin: 0 0 1.5rem;
}

a {
  color: var(--fg);
  text-decoration-color: #777774;
  text-underline-offset: 0.18em;
}

a:hover {
  text-decoration-color: var(--fg);
}

footer {
  padding: 1.25rem 0 2.5rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
}

@media (max-width: 640px) {
  body {
    font-size: 16px;
  }

  main,
  footer {
    width: calc(100% - 2rem);
  }

  main {
    padding-top: 4rem;
    padding-bottom: 3rem;
  }

  h1 {
    font-size: 1.5rem;
  }
}