:root {
  --ink: #16232c;
  --ink-soft: #4a5a66;
  --paper: #fbfcfc;
  --rule: #dde5e9;
  --accent: #146b6b;
  --accent-ink: #ffffff;
  --measure: 34rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #e6edf1;
    --ink-soft: #a3b3bd;
    --paper: #10181d;
    --rule: #26343d;
    --accent: #4fd1c5;
    --accent-ink: #0b1418;
  }
}

*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.65 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
}

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

.site-head {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.5rem;
  align-items: baseline;
  justify-content: space-between;
  max-width: 60rem;
  margin: 0 auto;
  padding: 1.25rem 1.25rem;
  border-bottom: 1px solid var(--rule);
}

.wordmark {
  font-weight: 650;
  letter-spacing: -.01em;
  text-decoration: none;
  color: var(--ink);
}

.site-head nav a {
  text-decoration: none;
  font-size: .9375rem;
}

.site-head nav a[aria-current="page"] { color: var(--ink-soft); }

main {
  max-width: 60rem;
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

main section + section { margin-top: 2.5rem; }

h1 {
  font-size: clamp(1.6rem, 4.5vw, 2.35rem);
  line-height: 1.2;
  letter-spacing: -.02em;
  margin: 0 0 .75rem;
}

h2 {
  font-size: 1.125rem;
  letter-spacing: -.01em;
  margin: 0 0 .5rem;
}

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

.lede {
  font-size: 1.0625rem;
  color: var(--ink-soft);
}

.cta {
  display: inline-block;
  margin-top: .5rem;
  padding: .55rem 1.05rem;
  border-radius: 6px;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 550;
  text-decoration: none;
}

/* TEST BANNER - temporary. Delete this block and the matching section in
   index.html to remove. */
.test-banner {
  margin-bottom: 2.5rem;
  padding: 1.5rem 1.25rem;
  border: 2px dashed var(--rule);
  border-radius: 8px;
  text-align: center;
}

.test-banner p {
  max-width: none;
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  font-size: clamp(2.5rem, 11vw, 5.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -.02em;
}

.steps {
  max-width: var(--measure);
  padding-left: 1.25rem;
}

.steps li + li { margin-top: .5rem; }

.site-foot {
  max-width: 60rem;
  margin: 0 auto;
  padding: 1.25rem;
  border-top: 1px solid var(--rule);
  color: var(--ink-soft);
  font-size: .875rem;
  display: flex;
  flex-wrap: wrap;
  gap: .25rem 1.5rem;
  justify-content: space-between;
}

.site-foot p { margin: 0; }

.version {
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}