:root {
  --fg: #1a1a1a;
  --bg: #ffffff;
  --muted: #5b6470;
  --accent: #0b5fa5;
  --line: #e3e6ea;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--fg);
  background: var(--bg);
  font: 16px/1.6 -apple-system, "Segoe UI", "Noto Sans", "Noto Sans SC", sans-serif;
}

.site-header,
.site-main,
.site-footer {
  max-width: 46rem;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.site-header {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: baseline;
  justify-content: space-between;
  padding-top: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.brand { font-weight: 700; font-size: 1.15rem; }
.site-nav a { margin-left: 1rem; }

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

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

.facts { display: grid; gap: .35rem 1.5rem; grid-template-columns: auto 1fr; margin: 0; }
.fact { display: contents; }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; font-weight: 600; }

.question-list { padding-left: 1.25rem; }
.question-list li { margin-bottom: .5rem; }

.sign svg { max-width: 9rem; height: auto; }

.options { padding-left: 1.25rem; }
.option .key { font-weight: 700; text-transform: uppercase; }

.answer { margin-top: 1rem; border-top: 1px solid var(--line); padding-top: .75rem; }
.explanation { color: var(--muted); }

.authority { color: var(--muted); font-size: .9rem; }

.site-footer {
  margin-top: 3rem;
  padding-top: 1rem;
  padding-bottom: 2rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .85rem;
}