:root{
  --bg:#F6F8FC; --surface:#FFFFFF; --surface-sunk:#EEF2F9;
  --ink:#182338; --muted:#5C6B87; --faint:#6F7E9A; --line:#DEE5F0;
  --accent:#1868DB; --accent-ink:#0E4DA6; --accent-wash:#E9F0FD;
  --ok:#1F9D6C; --amber:#B36B00; --danger:#C9372C;
  --warn-bg:#FFF6E6; --warn-line:#F0C766; --warn-ink:#7A5300;
  --code-bg:#0F1626; --code-ink:#DCE6FA;
  --shadow:0 1px 2px rgba(24,35,56,.04), 0 8px 24px -12px rgba(24,35,56,.12);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0A0E17; --surface:#12192A; --surface-sunk:#0E1422;
    --ink:#E7ECF6; --muted:#93A1BC; --faint:#7F8EAB; --line:#232D42;
    --accent:#6FA3FF; --accent-ink:#9BC0FF; --accent-wash:#152238;
    --ok:#4FCE99; --amber:#E3A53B; --danger:#F0776C;
    --warn-bg:#241C0A; --warn-line:#5C4A15; --warn-ink:#F0C766;
    --code-bg:#080B13; --code-ink:#CBD9F5;
    --shadow:0 1px 2px rgba(0,0,0,.3), 0 8px 24px -12px rgba(0,0,0,.5);
  }
}
:root[data-theme="dark"]{
  --bg:#0A0E17; --surface:#12192A; --surface-sunk:#0E1422;
  --ink:#E7ECF6; --muted:#93A1BC; --faint:#7F8EAB; --line:#232D42;
  --accent:#6FA3FF; --accent-ink:#9BC0FF; --accent-wash:#152238;
  --ok:#4FCE99; --amber:#E3A53B; --danger:#F0776C;
  --warn-bg:#241C0A; --warn-line:#5C4A15; --warn-ink:#F0C766;
  --code-bg:#080B13; --code-ink:#CBD9F5;
  --shadow:0 1px 2px rgba(0,0,0,.3), 0 8px 24px -12px rgba(0,0,0,.5);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"Newsreader",Georgia,"Times New Roman",serif;-webkit-font-smoothing:antialiased}
::selection{background:var(--accent-wash);color:var(--accent-ink)}
a{color:var(--accent-ink)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.skip{position:absolute;left:-9999px}
.skip:focus{left:12px;top:12px;background:var(--surface);padding:8px 12px;border-radius:8px;z-index:10}

.shell{max-width:1320px;margin:0 auto;padding:36px 28px 96px;display:grid;grid-template-columns:260px minmax(0,1fr) 200px;gap:48px;align-items:start}
@media (max-width:1180px){.shell{grid-template-columns:260px minmax(0,1fr)}.toc-right{display:none}}
@media (max-width:880px){.shell{grid-template-columns:1fr;gap:24px;padding:20px 16px 64px}aside.side{position:static !important}}

aside.side{position:sticky;top:20px;display:flex;flex-direction:column;gap:18px;max-height:calc(100vh - 40px);overflow-y:auto;padding-right:6px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand-mark{width:30px;height:30px;flex:none;display:flex}
.brand-mark img{width:30px;height:30px;display:block}
.brand-name{font-family:"IBM Plex Mono",ui-monospace,monospace;font-size:12.5px;font-weight:600;letter-spacing:.02em;color:var(--ink)}
.brand-sub{font-size:11px;color:var(--faint);margin-top:1px}

.search{position:relative}
.search input{width:100%;font:inherit;font-size:14px;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--ink)}
.search-results{position:absolute;z-index:5;left:0;right:0;top:100%;margin-top:4px;background:var(--surface);border:1px solid var(--line);border-radius:10px;box-shadow:var(--shadow);max-height:360px;overflow:auto}
.search-results[hidden]{display:none}
.search-results a{display:block;padding:9px 12px;text-decoration:none;color:var(--ink);border-bottom:1px solid var(--line);font-size:14px}
.search-results a:last-child{border-bottom:0}
.search-results a:hover,.search-results a:focus{background:var(--accent-wash)}
.search-results small{display:block;color:var(--muted);font-size:12.5px;margin-top:2px}

details.nav-wrap summary{display:none;cursor:pointer;font-family:"IBM Plex Mono",ui-monospace,monospace;font-size:13px;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:var(--surface)}
@media (max-width:880px){details.nav-wrap summary{display:block}}
nav.toc{display:flex;flex-direction:column;gap:2px;margin-top:8px}
.toc-group-label{font-family:"IBM Plex Mono",ui-monospace,monospace;font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:var(--faint);padding:12px 10px 2px}
.toc-group-label:first-child{padding-top:0}
nav.toc a{display:block;text-decoration:none;color:var(--muted);font-size:13.5px;line-height:1.5;padding:5px 10px;border-radius:7px;border-left:2px solid transparent;font-family:"IBM Plex Mono",ui-monospace,monospace}
nav.toc a:hover{color:var(--ink);background:var(--surface-sunk)}
nav.toc a[aria-current="page"]{color:var(--accent-ink);background:var(--accent-wash);border-left-color:var(--accent);font-weight:500}

.meta-card{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:12px 14px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:8px}
.meta-label{font-family:"IBM Plex Mono",ui-monospace,monospace;font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:var(--faint)}
.meta-value{font-size:13px;font-family:"IBM Plex Mono",ui-monospace,monospace}

main{min-width:0}
.crumb{font-family:"IBM Plex Mono",ui-monospace,monospace;font-size:12px;color:var(--faint);margin-bottom:10px}
.crumb a{color:var(--muted);text-decoration:none}
h1{font-size:clamp(28px,3.6vw,38px);font-weight:600;line-height:1.15;margin:0 0 10px;text-wrap:balance}
.subtitle{color:var(--muted);font-size:17px;margin:0 0 28px;max-width:62ch}
.meta-line{font-family:"IBM Plex Mono",ui-monospace,monospace;font-size:12px;color:var(--faint);margin:-14px 0 28px}
section{margin-bottom:40px;scroll-margin-top:20px}
section>h2,main>h2{font-size:22px;font-weight:600;margin:0 0 12px;padding-bottom:10px;border-bottom:1px solid var(--line);text-wrap:balance}
main>h2{margin-top:44px}
main>h2:first-child{margin-top:0}
h3{font-size:17px;font-weight:600;margin:26px 0 8px}
p,li,dd{font-size:17px;line-height:1.7;max-width:68ch}
p{margin:0 0 14px}
ul,ol{margin:0 0 14px;padding-left:22px;max-width:68ch}
li{margin-bottom:6px}
code,.field{font-family:"IBM Plex Mono",ui-monospace,monospace;background:var(--surface-sunk);border:1px solid var(--line);padding:1px 6px;border-radius:5px;font-size:.86em;color:var(--accent-ink)}
.h-anchor{margin-left:6px;opacity:0;text-decoration:none;color:var(--faint);font-size:.8em}
h2:hover .h-anchor,h3:hover .h-anchor{opacity:1}

.cta-row{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 36px}
.cta{font-family:"IBM Plex Mono",ui-monospace,monospace;font-size:12.5px;padding:8px 14px;border-radius:8px;text-decoration:none;border:1px solid var(--line);color:var(--muted);background:var(--surface)}
.cta.primary{background:var(--accent);color:#fff;border-color:var(--accent)}

.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;margin:18px 0 24px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:16px 18px;box-shadow:var(--shadow)}
.card h3{margin:0 0 6px;font-size:15px;font-family:"IBM Plex Mono",ui-monospace,monospace;color:var(--accent-ink)}
.card p,.card li{font-size:14.5px;line-height:1.6;color:var(--muted);margin:0 0 6px}
.card ul{padding-left:18px;margin:0}
.card a{font-weight:500}

.steps{counter-reset:step;list-style:none;padding:0;margin:14px 0}
.steps>li{counter-increment:step;position:relative;padding-left:36px;margin-bottom:14px}
.steps>li::before{content:counter(step);position:absolute;left:0;top:2px;width:24px;height:24px;border-radius:6px;background:var(--accent-wash);color:var(--accent-ink);font-family:"IBM Plex Mono",ui-monospace,monospace;font-size:12px;font-weight:600;display:flex;align-items:center;justify-content:center}

.tablewrap{overflow-x:auto;margin:14px 0 18px}
table{width:100%;border-collapse:collapse;font-size:15px}
th,td{text-align:left;padding:9px 14px 9px 0;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.5}
th{font-family:"IBM Plex Mono",ui-monospace,monospace;font-size:10.5px;text-transform:uppercase;letter-spacing:.06em;color:var(--faint);font-weight:600}
td.f,td.mono{font-family:"IBM Plex Mono",ui-monospace,monospace;font-size:13px;color:var(--accent-ink);white-space:nowrap}
td.num,th.num{text-align:right;font-family:"IBM Plex Mono",ui-monospace,monospace;white-space:nowrap}
table caption{text-align:left;color:var(--muted);font-size:14px;padding-bottom:6px}

.callout{border-left:3px solid var(--accent);background:var(--accent-wash);padding:12px 16px;border-radius:0 8px 8px 0;margin:16px 0;max-width:68ch}
.callout.warn{border-left-color:var(--amber);background:var(--warn-bg)}
.callout p{font-size:15.5px;margin:0}
.callout p+p{margin-top:8px}

.example{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:14px 18px;margin:16px 0;box-shadow:var(--shadow)}
.example>strong:first-child{display:block;font-family:"IBM Plex Mono",ui-monospace,monospace;font-size:11px;text-transform:uppercase;letter-spacing:.07em;color:var(--faint);margin-bottom:6px}

figure{margin:18px 0 24px;max-width:860px}
figure img{max-width:100%;height:auto;border:1px solid var(--line);border-radius:10px;box-shadow:var(--shadow);display:block}
figcaption{color:var(--muted);font-size:14px;margin-top:8px;font-family:"IBM Plex Mono",ui-monospace,monospace}

dl.glossary dt{font-weight:600;font-size:17px;margin-top:18px;scroll-margin-top:20px}
dl.glossary dd{margin:4px 0 0;color:var(--muted)}
.faq dt{font-weight:600;font-size:17px;margin-top:20px}
.faq dd{margin:6px 0 0;color:var(--muted)}

.pagenav{display:flex;justify-content:space-between;gap:14px;margin-top:48px;padding-top:20px;border-top:1px solid var(--line)}
.pagenav a{flex:1;max-width:48%;text-decoration:none;border:1px solid var(--line);background:var(--surface);border-radius:10px;padding:10px 14px;color:var(--ink)}
.pagenav a small{display:block;color:var(--faint);font-family:"IBM Plex Mono",ui-monospace,monospace;font-size:11px;text-transform:uppercase;letter-spacing:.06em}
.pagenav a.next{text-align:right;margin-left:auto}
.colophon{margin-top:40px;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--faint);line-height:1.7}

.toc-right{position:sticky;top:20px;font-size:13px}
.toc-right p{font-family:"IBM Plex Mono",ui-monospace,monospace;font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:var(--faint);margin:0 0 8px}
.toc-right a{display:block;color:var(--muted);text-decoration:none;padding:4px 0 4px 10px;border-left:2px solid var(--line);line-height:1.4}
.toc-right a:hover{color:var(--ink)}
.toc-right a.active{color:var(--accent-ink);border-left-color:var(--accent);font-weight:500}

/* legal pages (privacy, security) */
.not-list{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 4px}
.not-pill{font-family:"IBM Plex Mono",ui-monospace,monospace;font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:7px;padding:5px 10px;background:var(--surface-sunk);text-decoration:line-through;text-decoration-color:var(--faint)}
.scope-list{display:flex;flex-direction:column;gap:8px;margin:14px 0}
.scope-item{display:flex;gap:10px;align-items:baseline;background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:9px 14px;box-shadow:var(--shadow)}
.scope-item code{flex:none}
.scope-item span{font-size:13.5px;color:var(--muted)}
table.contact th,table.contact td{padding:8px 12px 8px 0}
.note{background:var(--warn-bg);border:1px solid var(--warn-line);color:var(--warn-ink);border-radius:10px;padding:12px 16px;font-size:14.5px;line-height:1.6;margin:14px 0}
.chip{display:inline-flex;align-items:center;gap:5px;padding:1px 8px;border-radius:999px;font-size:11.5px;font-weight:600;font-family:"IBM Plex Mono",ui-monospace,monospace}

@media print{aside.side,.toc-right,.pagenav,.cta-row{display:none}.shell{display:block;padding:0}body{background:#fff;color:#000}}