:root { color-scheme: light; --ink:#242a32; --muted:#5a6572; --blue:#2259b8; --line:#dfe5ed; --wash:#f5f7fa; }
* { box-sizing:border-box; }
html { scroll-padding-top:2rem; }
body { margin:0; background:#fff; color:var(--ink); font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif; font-size:17px; line-height:1.8; overflow-wrap:anywhere; }
a { color:var(--blue); text-underline-offset:4px; text-decoration-thickness:1px; }
a:hover { text-decoration-thickness:2px; }
a:focus-visible, summary:focus-visible { outline:3px solid var(--blue); outline-offset:5px; border-radius:2px; }
.skip { position:absolute; top:-5rem; left:1rem; z-index:10; background:white; padding:.5rem 1rem; }
.skip:focus { top:1rem; }
.site-header { max-width:1120px; margin:auto; display:flex; align-items:center; justify-content:space-between; gap:1.5rem; padding:25px 40px; border-bottom:1px solid var(--line); }
.brand { display:inline-flex; align-items:center; width:128px; height:42px; overflow:hidden; flex-shrink:0; text-decoration:none; }
.brand-logo { display:block; width:172px; height:41px; max-width:none; flex-shrink:0; margin-left:-22px; }
nav { display:flex; flex-wrap:wrap; align-items:center; gap:24px; font-size:14px; }
nav a { color:var(--muted); text-decoration:none; padding:4px 0; }
nav a:hover, nav a[aria-current] { color:var(--blue); text-decoration:underline; }
nav .language { border-left:1px solid var(--line); padding-left:24px; }
main { outline:none; }
.document, .home { max-width:820px; padding:55px 40px 64px; margin:auto; }
.eyebrow { color:var(--muted); font-size:13px; margin:0 0 12px; letter-spacing:.04em; }
h1 { font-size:40px; line-height:1.25; letter-spacing:-1.1px; margin:0 0 24px; font-weight:650; }
.intro { color:var(--muted); font-size:16px; margin:0; }
.contents { border-top:1px solid var(--line); border-bottom:1px solid var(--line); margin:32px 0 40px; padding:15px 0; font-size:15px; }
summary { cursor:pointer; color:var(--muted); width:fit-content; }
.contents ol { padding-left:25px; margin:15px 0 4px; }
.contents li { padding:4px 0; }
.prose section + section { margin-top:38px; }
h2 { font-size:22px; line-height:1.45; letter-spacing:-.2px; font-weight:650; margin:0 0 16px; }
p { margin:0 0 17px; }
.prose p:last-child { margin-bottom:0; }
.prose ul { padding-left:24px; margin:16px 0; }
.prose li { padding:3px 0; }
.related-links { list-style:none; padding-left:0 !important; font-size:15px; }
.lead { color:var(--muted); font-size:18px; margin:0 0 35px; }
.document-list { list-style:none; margin:0; padding:0; border-top:1px solid var(--line); }
.document-list li { border-bottom:1px solid var(--line); }
.document-list a { display:flex; align-items:center; justify-content:space-between; gap:20px; padding:25px 0; text-decoration:none; color:var(--ink); }
.document-list a:hover strong { color:var(--blue); }
.document-list strong { display:block; font-size:21px; font-weight:600; }
.row-description { display:block; color:var(--muted); font-size:15px; margin-top:4px; }
.arrow { color:var(--blue); font-size:22px; }
.contact-note { margin-top:40px; padding-top:6px; }
.contact-note h2 { font-size:19px; margin-bottom:8px; }
.contact-note p { font-size:15px; color:var(--muted); margin-bottom:6px; }
.site-footer { max-width:1040px; padding:24px 0 32px; margin:0 40px; border-top:1px solid var(--line); color:var(--muted); font-size:13px; display:flex; flex-wrap:wrap; justify-content:space-between; gap:8px 24px; }
@media(min-width:1120px) { .site-footer { margin:auto; } }
@media(max-width:600px) { body { font-size:16px; line-height:1.85; } .site-header { padding:19px 22px; flex-wrap:wrap; gap:13px; } nav { gap:16px; width:100%; font-size:13px; } nav .language { padding-left:16px; margin-left:auto; } .document,.home { padding:37px 22px 45px; } h1 { font-size:32px; letter-spacing:-.7px; margin-bottom:20px; } h2 { font-size:20px; } .intro { font-size:15px; } .lead { font-size:17px; } .site-footer { margin:0 22px; padding:21px 0; display:block; } .site-footer span { display:block; margin-bottom:5px; } }
@media(prefers-reduced-motion:reduce) { html { scroll-behavior:auto; } }