:root {
  --font-family: "Instrument Sans", sans-serif;
  --font-family-heading: "Instrument Serif", serif;
  --color-primary: #4d9e9e;
  --size-max-width: 67ch;
  --size-base-font: 18px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-primary: #7fc5c5;
  }
}

body {
  font-family: var(--font-family);
  font-size: var(--size-base-font);
  line-height: 1.5;
  max-width: var(--size-max-width);
  margin: 0 auto;
  padding: calc(var(--size-max-width) * 0.05);
  text-align: justify;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-heading);
  font-weight: normal;
}

h1 {
  text-align: center;
  text-wrap: balance;
  max-width: calc(var(--size-max-width) * 0.4);
  margin-left: auto;
  margin-right: auto;
}

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