:root {
  color-scheme: light;
  --bg: #f7faf8;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --accent: #22a34a;
  --border: #e5e7eb;
  --table-head: #ecfdf3;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
}
.wrap {
  max-width: 820px;
  margin: 0 auto;
  padding: 24px 20px 48px;
}
header.site {
  margin-bottom: 20px;
}
header.site a {
  color: var(--accent);
  text-decoration: none;
  font-size: 14px;
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 24px;
  box-shadow: 0 8px 24px rgba(0,0,0,.04);
}
h1 {
  font-size: 28px;
  line-height: 1.3;
  margin: 0 0 12px;
}
.meta {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 20px;
}
h2 {
  font-size: 20px;
  margin: 28px 0 12px;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}
h2:first-of-type { border-top: none; padding-top: 0; }
h3 {
  font-size: 17px;
  margin: 20px 0 10px;
  color: #111827;
}
p { margin: 0 0 12px; }
ul { margin: 0 0 12px; padding-left: 1.25em; }
li { margin-bottom: 6px; }
hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 24px 0;
}
strong { font-weight: 600; }
table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0 16px;
  font-size: 14px;
  display: block;
  overflow-x: auto;
}
th, td {
  border: 1px solid var(--border);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}
th { background: var(--table-head); font-weight: 600; }
.contact {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: 12px;
  padding: 14px 16px;
  margin: 12px 0;
}
.footer {
  margin-top: 24px;
  color: var(--muted);
  font-size: 14px;
}
.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  margin-top: 12px;
  font-size: 14px;
}
.nav-links a { color: var(--accent); }
@media (max-width: 640px) {
  .wrap { padding: 16px 14px 36px; }
  .card { padding: 22px 16px; border-radius: 14px; }
  h1 { font-size: 24px; }
  table { font-size: 13px; }
}