:root{
  --navy:#0B2A55; --cream:#F7EFD8; --red:#B81D3A;
  --bg:#F7EFD8; --fg:#0B2A55; --muted:#3F5577; --link:#B81D3A; --card:#FFFBEF; --line:#D9CDAA;
  --head-bg:#0B2A55; --head-fg:#F7EFD8; --bang:#FF8FA3; --focus:#B81D3A;
  --note-bg:#FFFBEF; --note-bar:#B81D3A;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  color-scheme:light dark;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#06172F; --fg:#F7EFD8; --muted:#C5CEDD; --link:#FF8FA3; --card:#0B2A55; --line:#24467A;
    --head-bg:#0B2A55; --bang:#FF8FA3; --focus:#FF8FA3; --note-bg:#0B2A55; --note-bar:#FF8FA3;
  }
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:1.0625rem/1.65 var(--font)}
.skip{position:absolute;left:-999px;top:0;background:var(--cream);color:var(--navy);padding:.6rem 1rem;z-index:10;font-weight:700}
.skip:focus{left:0}
.wrap{max-width:720px;margin:0 auto;padding:0 16px}
.site-header{background:var(--head-bg);color:var(--head-fg)}
.site-header .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.25rem 1.5rem;padding-top:.9rem;padding-bottom:.9rem}
.wordmark{font-size:1.6rem;font-weight:900;letter-spacing:.04em;color:var(--head-fg);text-decoration:none}
.wordmark span{color:var(--bang)}
.site-header nav ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:.1rem 1.25rem}
.site-header nav a{display:inline-block;padding:.5rem 0;color:var(--head-fg);text-decoration:none;font-weight:600;border-bottom:2px solid transparent}
.site-header nav a:hover,.site-header nav a[aria-current="page"]{border-bottom-color:var(--bang)}
a{color:var(--link);text-underline-offset:.15em}
a:focus-visible,summary:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:2px}
.site-header a:focus-visible{outline-color:var(--bang)}
main{padding-top:1.5rem;padding-bottom:3rem}
h1{font-size:2rem;line-height:1.2;margin:.5rem 0 .5rem}
h2{font-size:1.4rem;line-height:1.3;margin:2.4rem 0 .5rem;padding-top:.4rem;border-top:2px solid var(--line);scroll-margin-top:1rem}
h3{font-size:1.1rem;margin:1.6rem 0 .3rem;scroll-margin-top:1rem}
p,ul,ol{margin:.7rem 0}
li{margin:.3rem 0}
.lead{font-size:1.2rem;color:var(--fg)}
.meta{color:var(--muted);font-size:.95rem}
.toc{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:.9rem 1.2rem;margin:1.2rem 0}
.toc h2{font-size:1rem;margin:0 0 .3rem;padding:0;border:0;text-transform:uppercase;letter-spacing:.06em}
.toc ol{margin:0;padding-left:1.4rem;columns:1}
@media (min-width:640px){.toc ol{columns:2;column-gap:2rem}}
.toc li{margin:.15rem 0;break-inside:avoid}
.callout{background:var(--note-bg);border:1px solid var(--line);border-left:6px solid var(--note-bar);border-radius:8px;padding:.8rem 1.1rem;margin:1.2rem 0}
.callout p{margin:.4rem 0}
.callout .label{font-weight:800;text-transform:uppercase;letter-spacing:.05em;font-size:.85rem}
.cards{display:grid;gap:.8rem;grid-template-columns:1fr;margin:1.2rem 0}
@media (min-width:640px){.cards{grid-template-columns:repeat(3,1fr)}}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:.9rem 1.1rem}
.card h3{margin:0 0 .3rem}
.card p{margin:.3rem 0}
.hero{padding:1rem 0 .5rem}
table{border-collapse:collapse;width:100%;margin:1rem 0;font-size:.95rem;background:var(--card)}
caption{text-align:left;font-weight:700;padding:.3rem 0}
th,td{border:1px solid var(--line);padding:.5rem .6rem;text-align:left;vertical-align:top}
thead th{background:var(--navy);color:var(--cream)}
tbody th{font-weight:700}
@media (max-width:639px){
  table:not(.qa),table:not(.qa) thead,table:not(.qa) tbody,table:not(.qa) tr,table:not(.qa) th,table:not(.qa) td{display:block}
  thead{position:absolute;left:-999px}
  table:not(.qa) tr{border:1px solid var(--line);border-radius:8px;margin:0 0 .8rem;overflow:hidden}
  table:not(.qa) th,table:not(.qa) td{border:0;border-bottom:1px solid var(--line)}
  td[data-label]::before{content:attr(data-label);display:block;font-weight:700;font-size:.8rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted)}
  table:not(.qa) tbody th{background:var(--navy);color:var(--cream)}
  table.qa th{width:42%}
}
details{background:var(--card);border:1px solid var(--line);border-radius:8px;margin:.6rem 0;padding:0 1rem}
summary{cursor:pointer;font-weight:700;padding:.75rem 0;list-style-position:outside}
details[open] summary{border-bottom:1px solid var(--line);margin-bottom:.4rem}
details > :not(summary){margin-top:.5rem}
code,kbd{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em;background:var(--card);border:1px solid var(--line);border-radius:4px;padding:.05em .35em}
.btn{display:inline-block;background:var(--red);color:#fff;font-weight:700;text-decoration:none;padding:.65rem 1.1rem;border-radius:8px}
.btn:hover{filter:brightness(1.1)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .btn{background:var(--bang);color:#06172F}}
.site-footer{background:var(--navy);color:var(--cream);padding:1.5rem 0 2rem;font-size:.95rem}
.site-footer a{color:var(--cream)}
.site-footer ul{list-style:none;margin:0 0 .8rem;padding:0;display:flex;flex-wrap:wrap;gap:.2rem 1.25rem}
.site-footer p{margin:.3rem 0}
@media print{.site-header nav,.skip,.toc{display:none}}