:root { color-scheme: light dark; }
* { box-sizing: border-box; }
body {
  font: 16px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  max-width: 46rem; margin: 0 auto; padding: 3rem 1.25rem 5rem;
  color: #1a1a1a; background: #fff;
}
h1 { font-size: 1.75rem; line-height: 1.25; margin: 0 0 .35em; }
h2 { font-size: 1.15rem; margin: 2.25em 0 .6em; }
p, li { margin: 0 0 .9em; }
ul { padding-left: 1.25rem; }
a { color: #0b5fbf; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .9em;
       background: #f0f0f0; padding: .1em .35em; border-radius: 3px; }
.lede { color: #555; font-size: 1.05rem; margin-bottom: 2em; }
.meta { color: #777; font-size: .875rem; }
hr { border: 0; border-top: 1px solid #e0e0e0; margin: 2.5em 0; }
nav a { margin-right: 1.25rem; }
@media (prefers-color-scheme: dark) {
  body { color: #e6e6e6; background: #141414; }
  a { color: #6fb3ff; }
  code { background: #262626; }
  .lede { color: #aaa; }
  .meta { color: #888; }
  hr { border-top-color: #333; }
}