:root { color-scheme: light; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; color: #172b37; background: #f4f7f8; font-synthesis: none; }
* { box-sizing: border-box; }
body { margin: 0; line-height: 1.85; font-size: 16px; }
main { max-width: 920px; margin: 40px auto; padding: 40px 48px; background: #fff; border: 1px solid #dbe4e8; border-radius: 16px; }
header { border-bottom: 1px solid #dbe4e8; padding-bottom: 24px; }
.brand { color: #086349; font-weight: 700; margin: 0; }
h1 { font-size: clamp(26px, 5vw, 36px); line-height: 1.35; margin: 12px 0; }
h2 { font-size: 22px; line-height: 1.5; margin: 36px 0 12px; scroll-margin-top: 20px; }
h3 { font-size: 18px; margin: 24px 0 8px; }
p { margin: 12px 0; }
.meta, footer { color: #475c68; font-size: 14px; }
.notice { border-left: 4px solid #087a59; background: #eff8f4; padding: 14px 18px; margin: 24px 0; }
a { color: #075a98; text-decoration: underline; text-underline-offset: 3px; overflow-wrap: anywhere; }
a:focus-visible { outline: 3px solid #087a59; outline-offset: 4px; }
nav { padding: 16px 20px; background: #f4f7f8; border-radius: 10px; }
nav ol { margin: 8px 0; padding-left: 24px; columns: 2; column-gap: 32px; }
li { margin: 8px 0; break-inside: avoid; }
ul { padding-left: 24px; }
.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 15px; margin: 16px 0; }
th, td { border: 1px solid #cbd9df; padding: 12px; text-align: left; vertical-align: top; }
th { background: #edf3f5; font-weight: 700; }
td:first-child { min-width: 100px; font-weight: 600; }
footer { margin-top: 36px; border-top: 1px solid #dbe4e8; padding-top: 18px; }
@media (max-width: 640px) { main { margin: 0; padding: 28px 20px; border: 0; border-radius: 0; } nav ol { columns: 1; } th, td { padding: 9px; } }
@media print { :root { background: white; } main { max-width: none; margin: 0; padding: 0; border: 0; } nav { display: none; } h2, h3 { break-after: avoid; } tr { break-inside: avoid; } }