:root { color-scheme: light; }
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: #f9fafb;
  color: #1f2937;
  line-height: 1.65;
}
header {
  background: #fff;
  border-bottom: 1px solid #e5e7eb;
  padding: 16px 20px;
}
header a { color: #1d4ed8; text-decoration: none; font-weight: 600; }
main {
  max-width: 880px;
  margin: 32px auto 64px;
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 16px;
  padding: 32px 28px;
}
h1 { margin: 0 0 8px; font-size: 2rem; color: #111827; }
.meta { color: #6b7280; font-size: 0.9rem; margin-bottom: 28px; }
h2 { font-size: 1.25rem; color: #111827; margin-top: 28px; }
ul { padding-left: 1.25rem; }
a { color: #2563eb; }
footer {
  max-width: 880px;
  margin: 0 auto 40px;
  padding: 0 20px 32px;
  color: #6b7280;
  font-size: 0.9rem;
}
footer a { margin-right: 16px; }