:root { color-scheme: light; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; color: #202c37; background: #f5f7f9; }
* { box-sizing: border-box; }
body { margin: 0; font-size: 16px; line-height: 1.85; overflow-wrap: anywhere; }
a { color: #166759; text-underline-offset: 4px; }
a:focus-visible { outline: 3px solid #166759; outline-offset: 4px; }
.skip-link { position: absolute; top: -80px; left: 16px; background: white; padding: 8px 16px; }
.skip-link:focus { top: 12px; }
.site-header, main, footer { width: min(960px, calc(100% - 40px)); margin-inline: auto; }
.site-header { padding: 28px 0 20px; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.brand { font-weight: 700; letter-spacing: .02em; }
.brand small { font-size: 13px; font-weight: 400; color: #65727e; margin-left: 8px; }
nav { display: flex; flex-wrap: wrap; gap: 20px; font-size: 14px; }
nav a { text-decoration: none; }
nav a[aria-current="page"] { font-weight: 700; text-decoration: underline; }
main { background: #fff; border: 1px solid #e2e8ec; border-radius: 12px; padding: 40px 48px; }
h1 { font-size: 30px; line-height: 1.4; margin: 0 0 24px; letter-spacing: -.02em; }
h2 { font-size: 21px; line-height: 1.6; margin: 32px 0 14px; }
p { margin: 14px 0; }
ul, ol { padding-left: 1.5em; }
li { padding-left: 3px; margin: 8px 0; }
strong { font-weight: 650; }
hr { border: 0; border-top: 1px solid #e2e8ec; margin: 28px 0; }
.table-scroll { max-width: 100%; overflow-x: auto; margin: 20px 0; }
table { width: 100%; min-width: 580px; border-collapse: collapse; font-size: 14px; line-height: 1.75; }
th, td { border: 1px solid #dce4e8; padding: 12px; text-align: left; vertical-align: top; }
th { background: #f2f6f6; font-weight: 650; }
footer { padding: 22px 0 32px; color: #65727e; font-size: 13px; text-align: center; }
@media (max-width: 600px) {
  .site-header, main, footer { width: calc(100% - 24px); }
  .site-header { padding: 20px 4px 16px; }
  .brand small { display: block; margin-left: 0; }
  main { padding: 26px 20px; border-radius: 8px; }
  h1 { font-size: 26px; }
  h2 { font-size: 19px; }
}
@media print {
  :root { background: #fff; }
  .site-header, footer, .skip-link { display: none; }
  main { width: 100%; border: 0; padding: 0; }
  .table-scroll { overflow: visible; }
  table { min-width: 0; }
  h2 { break-after: avoid; }
}