:root { font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: #181d27; background: #fff; line-height: 1.65; }
* { box-sizing: border-box; }
body { margin: 0; }
a { color: #175cd3; text-underline-offset: .2em; }
a:hover { color: #0c2d6b; }
a:focus-visible, summary:focus-visible { outline: 3px solid #175cd3; outline-offset: 5px; border-radius: 2px; }
header { min-height: 80px; border-bottom: 1px solid #e9eaeb; padding: 18px max(24px, calc((100% - 1120px) / 2)); display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { font-size: 20px; font-weight: 750; color: #0c2d6b; text-decoration: none; white-space: nowrap; }
header nav { display: flex; gap: 24px; font-size: 14px; }
header nav a { text-decoration: none; }
main { max-width: 1040px; padding: 42px 28px 64px; margin: auto; }
h1 { font-size: clamp(28px, 4.5vw, 42px); line-height: 1.2; letter-spacing: -.025em; max-width: 24ch; margin: 24px 0; }
h2 { font-size: 25px; line-height: 1.35; margin: 0 0 16px; }
h3 { font-size: 18px; line-height: 1.55; margin: 12px 0 8px; }
h4 { font-size: 15px; margin: 0 0 12px; }
p { max-width: 78ch; margin: 12px 0; }
.lead { font-size: 18px; color: #414651; max-width: 76ch; }
.facts { display: flex; flex-wrap: wrap; gap: 20px 42px; margin: 28px 0 12px; }
dt, .muted { font-size: 13px; color: #535862; }
dd { margin: 2px 0 0; font-size: 15px; font-weight: 600; }
.status { color: #12613d; font-weight: 650; }
.downloads { display: flex; flex-wrap: wrap; gap: 12px 24px; margin: 22px 0; font-size: 14px; font-weight: 600; }
.scope { background: #eff6ff; border-left: 4px solid #175cd3; padding: 18px 22px; margin: 30px 0; }
.scope p { margin-bottom: 0; }
.contents { display: flex; flex-wrap: wrap; gap: 12px 24px; padding-bottom: 28px; font-size: 14px; }
main > section { border-top: 1px solid #e9eaeb; padding-top: 32px; margin-top: 32px; }
[id] { scroll-margin-top: 24px; }
.change { margin-top: 28px; }
.change > p { color: #535862; font-size: 14px; margin-top: 0; }
.comparison { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid #d5d7da; border-radius: 8px; overflow: hidden; }
.comparison > div { padding: 22px; min-width: 0; }
.comparison > div + div { border-left: 1px solid #d5d7da; background: #f8faff; }
.comparison p { font-size: 14px; line-height: 1.8; }
.comparison a { font-size: 13px; }
del { background: #ffe4e5; color: #841d31; text-decoration-thickness: 1px; }
ins { background: #d8f3e4; color: #145334; text-decoration-thickness: 1px; }
.claim { padding: 20px 0; border-bottom: 1px solid #e9eaeb; }
.claim:last-child { border-bottom: 0; }
.claim .muted { margin-top: 0; }
.permalink { font-weight: 400; text-decoration: none; }
summary { cursor: pointer; font-size: 14px; color: #175cd3; padding: 8px 0; font-weight: 600; }
figure { margin: 18px 0; }
blockquote { margin: 16px 0; border-left: 3px solid #d5d7da; padding: 0 0 0 18px; color: #414651; font-size: 14px; line-height: 1.8; }
figcaption { font-size: 13px; color: #535862; }
.timeline { list-style: none; padding: 0; }
.timeline li { margin: 22px 0; }
.timeline time { display: inline-block; min-width: 160px; color: #535862; font-size: 14px; }
.timeline p { font-size: 13px; margin-top: 4px; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; text-align: left; font-size: 14px; }
caption { text-align: left; margin: 8px 0; font-size: 13px; color: #535862; }
th, td { border-bottom: 1px solid #e9eaeb; padding: 14px 16px 14px 0; vertical-align: top; }
.source { border-bottom: 1px solid #e9eaeb; padding: 10px 0; }
.source:target { background: #eff6ff; padding: 12px; border-radius: 6px; }
.source p { font-size: 14px; }
code { overflow-wrap: anywhere; }
li { margin: 10px 0; }
.record { max-width: 78ch; padding: 26px 0; margin: 28px 0; border-block: 1px solid #e9eaeb; }
footer { border-top: 1px solid #e9eaeb; padding: 26px; text-align: center; font-size: 13px; color: #535862; }
.skip { position: absolute; left: 16px; top: -100px; background: #fff; padding: 8px; }
.skip:focus { top: 8px; }
@media (max-width: 640px) {
  header { flex-wrap: wrap; gap: 12px; padding: 16px 20px; }
  header nav { gap: 20px; }
  main { padding: 24px 20px 40px; }
  .facts { gap: 18px 28px; }
  .comparison { grid-template-columns: 1fr; }
  .comparison > div + div { border-left: 0; border-top: 1px solid #d5d7da; }
  .timeline time { display: block; }
}