:root {
  color-scheme: light;
  --ink: #0b1724;
  --muted: #52606d;
  --line: #d9e1e8;
  --accent: #2f6df6;
  --surface: #ffffff;
  --background: #f6f8fb;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--background);
  color: var(--ink);
  font-family: "DM Sans", Arial, sans-serif;
  line-height: 1.65;
}
header, main, footer {
  width: min(900px, calc(100% - 32px));
  margin: 0 auto;
}
header {
  padding: 28px 0 18px;
  border-bottom: 1px solid var(--line);
}
.brand {
  color: var(--ink);
  font-size: 1.25rem;
  font-weight: 800;
  text-decoration: none;
}
main {
  margin-top: 28px;
  margin-bottom: 48px;
  padding: 36px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
}
h1 { margin-top: 0; line-height: 1.2; }
h2 { margin-top: 30px; line-height: 1.3; }
p, li { color: var(--muted); }
a { color: var(--accent); }
.updated { color: var(--muted); font-size: 0.95rem; }
footer {
  padding: 0 0 40px;
  color: var(--muted);
}
footer a { margin-right: 18px; }
@media (max-width: 640px) {
  main { padding: 24px 20px; }
}