:root {
  color-scheme: light;
  --ink: #1f2937;
  --muted: #64748b;
  --line: #d7dee8;
  --paper: #ffffff;
  --wash: #f6f8fb;
  --brand: #d95f02;
  --accent: #0f766e;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--wash);
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  line-height: 1.72;
  letter-spacing: 0;
}
main, body > * {
  max-width: 1120px;
  margin-left: auto;
  margin-right: auto;
}
body > h1,
body > h2,
body > h3,
body > p,
body > ul,
body > ol,
body > table,
body > blockquote,
body > pre {
  padding-left: 28px;
  padding-right: 28px;
}
h1 {
  max-width: none;
  margin-top: 0;
  padding-top: 46px;
  padding-bottom: 22px;
  color: #111827;
  background: var(--paper);
  border-top: 8px solid var(--brand);
}
h2 {
  margin-top: 48px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: #111827;
}
h3 { margin-top: 30px; color: var(--accent); }
blockquote {
  margin-top: 22px;
  margin-bottom: 22px;
  padding-top: 18px;
  padding-bottom: 18px;
  background: #fff7ed;
  border-left: 5px solid var(--brand);
}
table {
  width: calc(100% - 56px);
  margin: 20px 28px;
  border-collapse: collapse;
  background: var(--paper);
  font-size: 14px;
}
th, td {
  padding: 10px 12px;
  vertical-align: top;
  border: 1px solid var(--line);
}
th { background: #eef2f7; text-align: left; }
pre {
  overflow-x: auto;
  padding-top: 18px;
  padding-bottom: 18px;
  background: #111827;
  color: #f8fafc;
}
code { font-family: "SFMono-Regular", Consolas, monospace; }
li { margin: 6px 0; }
@media (max-width: 720px) {
  body > h1,
  body > h2,
  body > h3,
  body > p,
  body > ul,
  body > ol,
  body > blockquote,
  body > pre { padding-left: 16px; padding-right: 16px; }
  table { width: calc(100% - 32px); margin-left: 16px; margin-right: 16px; font-size: 12px; }
  th, td { padding: 8px; }
}