:root {
  --red: #ff0000;
  --blue: #0000ff;
  --yellow: #ffff00;
  --black: #000000;
  --white: #ffffff;
  --grey: #666666;
  --rule: 4px solid var(--black);
  --space-1: 0.5rem;
  --space-2: 0.75rem;
  --space-3: 1.25rem;
  --space-4: 2.5rem;
  --section-gap: clamp(4rem, 8vw, 8rem);
  --measure: 72ch;
}

body {
  color: var(--black);
  font-family: Helvetica, Arial, sans-serif;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.6;
}

h1,
h2,
h3,
p,
ul,
ol,
dl {
  margin-top: 0;
}

h1,
h2,
h3 {
  line-height: 1.08;
}

h1,
h2 {
  font-weight: 700;
  letter-spacing: -0.035em;
}

h1 {
  max-width: 18ch;
  font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
  max-width: 25ch;
  font-size: clamp(1.5rem, 2.5vw, 2rem);
}

h3 {
  font-size: 1.125rem;
}

p,
li,
dd,
dt,
a,
button,
input,
label,
footer {
  font-size: 1rem;
}

p,
li {
  max-width: var(--measure);
}

.eyebrow,
.label,
.breadcrumb,
.source-mark,
.technical {
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.045em;
}

.step-number {
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.045em;
}

.technical,
.source-mark {
  font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.eyebrow,
.label {
  text-transform: uppercase;
}

.lede {
  max-width: 56ch;
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  line-height: 1.45;
}

.muted {
  color: var(--grey);
}

::selection {
  color: var(--white);
  background: var(--blue);
}