* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --measure: 68ch;
  --space-1: 8px;
  --space-2: 12px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 32px;
  --space-6: 48px;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  display: block;
  padding: var(--space-5) var(--space-3) var(--space-6) var(--space-3);
}

main {
  width: min(var(--measure), 100%);
  margin: 0 auto;
  text-align: left;
}

header {
  margin-bottom: var(--space-4);
}

h1 {
  font-family: "Computer Modern Serif", CMU-Serif, serif;
  font-size: 30px;
  line-height: 1.25;
  margin-bottom: var(--space-2);
  text-align: center;
  font-weight: 600;
  font-style: italic;
}

h2 {
  font-family: "Computer Modern Serif", CMU-Serif, serif;
  font-size: 16px;
  line-height: 1.4;
  margin-top: var(--space-5);
  margin-bottom: var(--space-2);
  font-weight: 600;
  font-style: italic;
  text-transform: uppercase;
}

p,
li,
a {
  font-family: "Computer Modern Serif", CMU-Serif, serif;
  font-size: 17px;
  line-height: 1.6;
}

ul {
  padding-left: 1.25em;
}

li + li {
  margin-top: 4px;
}

section {
  margin-top: var(--space-6);
}

a {
  color: #0000ee;
  text-decoration: underline;
  text-underline-offset: 2px;
}

a:hover {
  text-decoration-thickness: 2px;
}

a:focus-visible {
  outline: 2px dotted;
  outline-offset: 2px;
}

footer {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid #ddd;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}

footer img {
  width: 100px;
  height: auto;
}

footer span {
  font-size: 14px;
  color: #666;
}

footer p {
  font-size: 14px;
  color: #666;
  margin: 0;
}

@media (min-width: 900px) {
  :root {
    --measure: 72ch;
  }
  h1 {
    font-size: 36px;
  }
  p,
  li,
  a {
    font-size: 18px;
  }
  footer img {
    width: 140px;
  }
}
