*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: #ffffff;
  color: #1f2937;
  line-height: 1.7;
  font-size: 16px;
}
.container { max-width: 820px; margin: 0 auto; padding: 40px 22px 64px; }
header.site {
  border-bottom: 1px solid #e5e7eb;
  padding: 18px 22px;
  text-align: center;
}
header.site a.brand { font-size: 18px; font-weight: 700; color: #111827; text-decoration: none; }
h1 { font-size: clamp(24px, 4vw, 32px); margin-bottom: 8px; color: #111827; }
.updated { color: #6b7280; font-size: 14px; margin-bottom: 28px; }
h2 { font-size: 20px; margin: 28px 0 10px; color: #111827; }
p, ul { margin-bottom: 14px; }
ul { padding-left: 22px; }
li { margin-bottom: 6px; }
a { color: #2563eb; }
.box {
  background: #f9fafb;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  padding: 16px 18px;
  margin: 16px 0;
}
footer.site {
  border-top: 1px solid #e5e7eb;
  padding: 22px;
  text-align: center;
  font-size: 13px;
  color: #6b7280;
}
footer.site nav { margin-bottom: 10px; }
footer.site nav a { color: #374151; text-decoration: none; font-weight: 600; margin: 0 6px; }
footer.site nav a:hover { text-decoration: underline; }