:root {
  --ink: #18232C;
  --muted: #5B6874;
  --line: #DEE3E8;
  --teal: #1a6b63;
  --bg: #FFFFFF;
  --tint: #F4F7F8;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #E6EBEE;
    --muted: #9AA7B0;
    --line: #2E3A42;
    --teal: #5FB3A9;
    --bg: #11181D;
    --tint: #18222A;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
header { border-bottom: 1px solid var(--line); }
.wrap { max-width: 680px; margin: 0 auto; padding: 0 20px; }
header .wrap { display: flex; justify-content: space-between; align-items: center; padding-top: 18px; padding-bottom: 18px; gap: 16px; flex-wrap: wrap; }
.brand { font-weight: 700; color: var(--ink); text-decoration: none; font-size: 18px; }
nav a { color: var(--muted); text-decoration: none; margin-left: 18px; font-size: 15px; }
nav a:first-child { margin-left: 0; }
nav a:hover, nav a[aria-current] { color: var(--teal); }
main .wrap { padding-top: 40px; padding-bottom: 64px; }
h1 { font-size: 30px; line-height: 1.2; margin: 0 0 12px; letter-spacing: -0.01em; }
h2 { font-size: 20px; margin: 36px 0 8px; }
p, li { color: var(--ink); }
.lede { font-size: 19px; color: var(--muted); margin-bottom: 28px; }
.updated { color: var(--muted); font-size: 14px; margin-bottom: 28px; }
a { color: var(--teal); }
ul { padding-left: 20px; }
li { margin-bottom: 6px; }
.box { background: var(--tint); border: 1px solid var(--line); border-radius: 10px; padding: 18px 20px; margin: 24px 0; }
.box p { margin: 0; }
footer { border-top: 1px solid var(--line); }
footer .wrap { padding-top: 20px; padding-bottom: 28px; color: var(--muted); font-size: 14px; }