:root {
  --paper: #fbfbf9;
  --ink: #1c1c1a;
  --muted: #6d6d66;
  --rule: #e3e1da;
  --link: #2b5f8f;
  --code-bg: #f2f1ec;
}

* { box-sizing: border-box; }

body {
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
  max-width: 46rem;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.6 -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

a { color: var(--link); }
a:focus-visible { outline: 2px solid var(--link); outline-offset: 2px; }

header.masthead {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  align-items: baseline;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 0.75rem;
  margin-bottom: 2rem;
}
header.masthead .name {
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--ink);
  text-decoration: none;
}
header.masthead nav { margin-left: auto; }
header.masthead nav a { margin-left: 1rem; font-size: 0.9rem; }

h1 { font-size: 1.6rem; line-height: 1.25; margin: 0 0 0.5rem; }
h2 { font-size: 1.15rem; margin: 2.25rem 0 0.5rem; }
h3 { font-size: 1rem; margin: 1.5rem 0 0.35rem; }

.lede { color: var(--muted); margin-top: 0; }

pre, code, kbd {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "DejaVu Sans Mono", monospace;
  font-size: 0.875em;
}
pre {
  background: var(--code-bg);
  border: 1px solid var(--rule);
  padding: 0.85rem 1rem;
  overflow-x: auto;
}
:not(pre) > code {
  background: var(--code-bg);
  padding: 0.1em 0.3em;
  border-radius: 2px;
}

table { border-collapse: collapse; width: 100%; margin: 1rem 0; }
th, td { text-align: left; padding: 0.4rem 0.6rem; border-bottom: 1px solid var(--rule); font-size: 0.92rem; }
th { font-weight: 600; }

dl dt { font-weight: 600; margin-top: 0.9rem; }
dl dd { margin: 0.15rem 0 0 0; color: var(--muted); }

footer {
  margin-top: 3.5rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.85rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
}

.note { border-left: 3px solid var(--rule); padding-left: 0.9rem; color: var(--muted); }

@media (max-width: 480px) {
  header.masthead nav { margin-left: 0; }
  header.masthead nav a:first-child { margin-left: 0; }
}