:root {
  --bg: #ffffff;
  --fg: #000000;
}

* {
  box-sizing: border-box;
}

html, body {
  height: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, "Helvetica Neue", Helvetica, Arial, sans-serif;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  padding: 6vw;
}

main {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 40rem;
}

h1 {
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: 0 0 1.25em;
  text-transform: uppercase;
}

.lede {
  font-size: clamp(1.05rem, 2.2vw, 1.375rem);
  line-height: 1.5;
  font-weight: 400;
  margin: 0 0 2em;
  max-width: 30ch;
}

.contact {
  font-size: clamp(1rem, 2vw, 1.125rem);
  margin: 0;
}

.contact a {
  color: var(--fg);
  text-decoration: none;
  border-bottom: 1px solid var(--fg);
  padding-bottom: 0.05em;
}

.contact a:hover,
.contact a:focus {
  opacity: 0.6;
}

footer {
  font-size: 0.75rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--fg);
  opacity: 0.55;
  padding-top: 3em;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --fg: #ffffff;
  }
}