:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #073D32;
  background: #f5f7f4;
  font-synthesis: none;
  --muted: #52665a;
  --line: #dce5df;
}
* { box-sizing: border-box; }
body { margin: 0; }
a { color: #0F6B5B; text-underline-offset: 4px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible { outline: 3px solid #2CB28E; outline-offset: 4px; border-radius: 3px; }
.skip-link { position: absolute; left: 20px; top: -100px; padding: 12px; background: #fff; z-index: 2; }
.skip-link:focus { top: 12px; }
.shell { max-width: 1160px; margin: 0 auto; padding: 0 40px; }
.site-header { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px; padding: 27px 0; border-bottom: 1px solid var(--line); }
.brand-logo { display: block; width: 152px; height: auto; }
.tagline { color: var(--muted); font-size: 12px; margin: 8px 0 0; }
.site-nav { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.site-nav a { font-size: 14px; padding: 10px 12px; text-decoration: none; border-radius: 8px; }
.site-nav a[aria-current="page"] { background: #E8F7EF; color: #073D32; }
.site-nav .login-link { border: 1px solid #b6ccc0; margin-left: 8px; }
.hero { padding: 50px 0 30px; max-width: 800px; }
.eyebrow { font-size: 12px; letter-spacing: 1.7px; font-weight: 600; color: #0F6B5B; margin: 0 0 14px; }
h1 { font-size: clamp(32px, 4vw, 48px); font-weight: 650; letter-spacing: -1.3px; line-height: 1.15; margin: 0 0 18px; }
.lead { color: var(--muted); font-size: 18px; line-height: 1.65; margin: 0; max-width: 700px; }
.revision { font-size: 13px; color: var(--muted); margin: 18px 0 0; }
.review-note { border: 1px solid #d9d8be; border-radius: 12px; padding: 18px 22px; background: #faf8ed; color: #5e542e; font-size: 14px; line-height: 1.7; margin: 0 0 34px; }
.review-note p { margin: 0; }
.document-layout { display: grid; grid-template-columns: 235px minmax(0, 1fr); gap: 42px; align-items: start; }
.contents { position: sticky; top: 24px; padding: 20px 0; }
.contents h2 { font-size: 13px; font-weight: 600; margin: 0 0 14px; }
.contents ol { list-style: none; padding: 0; margin: 0; }
.contents li { margin: 0 0 3px; }
.contents a { display: block; padding: 8px 0; font-size: 13px; line-height: 1.45; text-decoration: none; color: var(--muted); }
.contents a:hover { color: #0F6B5B; text-decoration: underline; }
.document { min-width: 0; background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 12px 36px; }
.document section { padding: 26px 0; scroll-margin-top: 24px; }
.document section + section { border-top: 1px solid var(--line); }
.document h2 { font-size: 23px; line-height: 1.3; font-weight: 600; letter-spacing: -.4px; margin: 0 0 18px; }
.document h3 { font-size: 17px; font-weight: 600; margin: 24px 0 10px; }
.document p, .document li { color: var(--muted); font-size: 16px; line-height: 1.8; overflow-wrap: anywhere; }
.document p { margin: 12px 0; }
.document ul, .document ol { padding-left: 23px; margin: 12px 0; }
.document li + li { margin-top: 8px; }
.document strong { color: #073D32; font-weight: 600; }
.callout { border-left: 3px solid #2CB28E; background: #E8F7EF; padding: 16px 20px; border-radius: 0 8px 8px 0; }
.document .callout { color: #073D32; }
.site-footer { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; border-top: 1px solid var(--line); margin-top: 44px; padding: 24px 0 32px; font-size: 13px; color: var(--muted); }
.site-footer p { margin: 0; }
.footer-links { display: flex; flex-wrap: wrap; gap: 20px; }
@media (max-width: 850px) {
  .shell { padding: 0 24px; }
  .document-layout { grid-template-columns: 1fr; gap: 20px; }
  .contents { position: static; border: 1px solid var(--line); border-radius: 12px; padding: 20px; }
  .contents ol { columns: 2; column-gap: 24px; }
  .contents li { break-inside: avoid; }
  .hero { padding-top: 36px; }
}
@media (max-width: 540px) {
  .shell { padding: 0 20px; }
  .site-header { gap: 20px; padding: 22px 0; }
  .site-nav { gap: 4px; width: 100%; }
  .site-nav a { padding: 10px 8px; font-size: 13px; }
  .site-nav .login-link { margin-left: auto; }
  .lead { font-size: 16px; }
  .review-note { padding: 16px; margin-bottom: 24px; }
  .contents ol { columns: 1; }
  .document { padding: 4px 20px; border-radius: 12px; }
  .document h2 { font-size: 21px; }
  .document p, .document li { font-size: 15px; line-height: 1.8; }
  .site-footer { margin-top: 30px; }
}