:root { color-scheme: light dark; }
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.65;
  color: #1d1d1f;
  background: #fafaf8;
}
@media (prefers-color-scheme: dark) {
  body { color: #e8e8e6; background: #161615; }
  a { color: #7fb69b; }
  table, th, td { border-color: #3a3a38 !important; }
  th { background: #242422 !important; }
  .footer, .disclaimer { color: #9a9a97 !important; }
}
main { max-width: 720px; margin: 0 auto; padding: 48px 24px 96px; }
h1 { font-size: 2rem; margin-bottom: 0.25rem; }
h2 { font-size: 1.25rem; margin-top: 2.25rem; }
a { color: #1f6b47; }
.effective { color: #8a8a87; margin-top: 0; }
table { border-collapse: collapse; width: 100%; margin: 1rem 0; font-size: 0.95rem; }
th, td { border: 1px solid #ddd; padding: 8px 10px; text-align: left; vertical-align: top; }
th { background: #f0f0ee; }
.table-wrap { overflow-x: auto; }
.nav { margin-bottom: 2rem; font-size: 0.95rem; }
.disclaimer { margin-top: 3rem; font-style: italic; color: #8a8a87; font-size: 0.9rem; }
.footer { margin-top: 1rem; color: #8a8a87; font-size: 0.9rem; }