:root {
  --ink: #1f2430;
  --muted: #6b7280;
  --paper: #f7f7f4;
  --card: #ffffff;
  --line: #dcdcd5;
  --accent: #2f6f4f;
  --accent-soft: #e8f1ec;
  --warn-bg: #fff8e1;
  --warn-line: #e6c65c;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.75 -apple-system, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 860px; margin: 0 auto; padding: 0 20px 64px; }
header.site {
  background: var(--card);
  border-bottom: 1px solid var(--line);
  padding: 18px 0;
}
header.site .wrap { display: flex; align-items: baseline; gap: 14px; padding-bottom: 0; }
.brand { font-size: 21px; font-weight: 700; letter-spacing: 1px; }
.brand small { font-size: 12px; color: var(--muted); font-weight: 400; margin-left: 8px; }
nav.top { margin-left: auto; font-size: 14px; }
nav.top a { margin-left: 14px; color: var(--muted); }
nav.top a:hover { color: var(--accent); }
.crumb { font-size: 13px; color: var(--muted); margin: 18px 0 4px; }
h1 { font-size: 26px; margin: 6px 0 4px; }
.meta { color: var(--muted); font-size: 13px; margin-bottom: 22px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px 22px;
  margin: 14px 0;
}
.card h2 { font-size: 18px; margin: 0 0 10px; }
.notice {
  background: var(--accent-soft);
  border-left: 4px solid var(--accent);
  padding: 12px 16px;
  border-radius: 4px;
  margin: 16px 0;
  font-size: 14.5px;
}
.sysnote {
  background: var(--warn-bg);
  border: 1px solid var(--warn-line);
  border-radius: 6px;
  padding: 14px 18px;
  margin: 20px 0;
  font-size: 14px;
  line-height: 1.8;
}
.sysnote .tag {
  display: inline-block;
  background: var(--warn-line);
  color: #4a3b00;
  font-size: 12px;
  font-weight: 700;
  padding: 1px 8px;
  border-radius: 3px;
  margin-bottom: 8px;
}
pre {
  background: #23272e;
  color: #d8dee9;
  border-radius: 6px;
  padding: 14px 16px;
  overflow-x: auto;
  font: 13px/1.7 Consolas, "Courier New", monospace;
}
code.inline {
  background: #eceff3;
  border-radius: 3px;
  padding: 1px 6px;
  font: 13px Consolas, monospace;
}
table { border-collapse: collapse; width: 100%; font-size: 14px; margin: 10px 0; }
th, td { border: 1px solid var(--line); padding: 7px 12px; text-align: left; }
th { background: #f0f0ea; }
ul.pages { list-style: none; padding: 0; margin: 0; }
ul.pages li { padding: 9px 2px; border-bottom: 1px dashed var(--line); display: flex; justify-content: space-between; gap: 12px; }
ul.pages li:last-child { border-bottom: none; }
ul.pages .date { color: var(--muted); font-size: 13px; white-space: nowrap; }
.searchbox { margin: 18px 0 6px; }
.searchbox input {
  width: 100%;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-size: 14px;
  background: var(--card);
}
footer.site {
  margin-top: 48px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 640px) { .grid { grid-template-columns: 1fr; } }
.muted { color: var(--muted); }