:root{
  --canvas:#FAF9F6; --paper:#FFFFFF; --ink:#10254A; --ink-soft:#5E6F88;
  --ink-muted:#718097; --rule:#E7EDF4; --rule-strong:#D7E0EA;
  --cobalt:#2469DE; --cobalt-soft:#EAF4FF; --cobalt-ink:#155EBB;
  --mint:#32A982; --mint-soft:#EAF7F1; --amber:#DEA126; --amber-soft:#FFF5DD;
  --coral:#EF6A60; --coral-soft:#FFF0ED; --teal:#36A9B9;
  --serif:Georgia,"Iowan Old Style","Times New Roman",serif;
  --sans:-apple-system,BlinkMacSystemFont,"Avenir Next","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
  --measure:44rem;
}
*{box-sizing:border-box}
body{margin:0;background:var(--canvas);color:var(--ink);font-family:var(--sans);
  font-size:17px;line-height:1.62;-webkit-font-smoothing:antialiased}
.wrap{max-width:var(--measure);margin:0 auto;padding:0 20px}

/* Header */
.masthead{border-bottom:1px solid var(--rule);background:var(--paper)}
.masthead .wrap{display:flex;align-items:center;gap:12px;padding-top:16px;padding-bottom:16px}
.brand{display:flex;align-items:center;gap:9px;text-decoration:none;color:var(--ink);font-weight:700;
  font-size:15px;letter-spacing:-0.2px}
.brand svg{display:block}
.masthead nav{margin-left:auto;display:flex;gap:18px}
.masthead nav a{color:var(--ink-soft);text-decoration:none;font-size:13px;font-weight:600}
.masthead nav a:hover{color:var(--cobalt)}

/* Article shell */
article{padding:44px 0 8px}
.eyebrow{font-family:var(--mono);font-size:11px;letter-spacing:.11em;text-transform:uppercase;
  color:var(--cobalt);font-weight:700;margin:0 0 14px}
h1{font-family:var(--serif);font-size:2.45rem;line-height:1.14;letter-spacing:-0.5px;
  font-weight:600;margin:0 0 18px}
.standfirst{font-size:1.16rem;line-height:1.6;color:var(--ink-soft);margin:0 0 22px}
.byline{display:flex;flex-wrap:wrap;gap:10px 16px;align-items:center;padding:14px 0;
  border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);
  font-size:13px;color:var(--ink-muted);margin-bottom:34px}
.byline .dot{width:4px;height:4px;border-radius:50%;background:var(--rule-strong)}
h2{font-family:var(--serif);font-size:1.62rem;line-height:1.25;letter-spacing:-0.3px;font-weight:600;
  margin:44px 0 14px}
h3{font-size:1.12rem;font-weight:700;margin:30px 0 8px;letter-spacing:-0.1px}
p{margin:0 0 18px}
a{color:var(--cobalt-ink);text-underline-offset:2px}
a:hover{color:var(--cobalt)}
ul,ol{margin:0 0 18px;padding-left:22px}
li{margin-bottom:9px}
li::marker{color:var(--cobalt)}
strong{font-weight:700;color:var(--ink)}
hr{border:0;border-top:1px solid var(--rule);margin:40px 0}

/* Table of contents */
.toc{background:var(--paper);border:1px solid var(--rule);border-radius:14px;padding:18px 22px;margin:0 0 34px}
.toc p{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;
  color:var(--ink-muted);font-weight:700;margin:0 0 10px}
.toc ol{margin:0;padding-left:20px;font-size:15px}
.toc li{margin-bottom:6px}

/* Callouts */
blockquote{margin:26px 0;padding:18px 22px;border-left:3px solid var(--cobalt);
  background:var(--cobalt-soft);border-radius:0 12px 12px 0;font-size:16px;color:var(--ink)}
blockquote p:last-child{margin-bottom:0}
blockquote.warn{border-left-color:var(--coral);background:var(--coral-soft)}
blockquote.note{border-left-color:var(--amber);background:var(--amber-soft)}
blockquote.win{border-left-color:var(--mint);background:var(--mint-soft)}

/* Tables */
.table-scroll{overflow-x:auto;margin:0 0 24px;border:1px solid var(--rule);border-radius:12px;background:var(--paper)}
table{border-collapse:collapse;width:100%;min-width:520px;font-size:14.5px}
th,td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--rule);vertical-align:top}
th{background:#F4F7FB;font-size:12px;letter-spacing:.05em;text-transform:uppercase;
  color:var(--ink-muted);font-weight:700;white-space:nowrap}
tbody tr:last-child td{border-bottom:0}

/* Figures */
figure{margin:30px 0;padding:0}
figure svg{display:block;width:100%;height:auto;max-width:100%;
  border:1px solid var(--rule);border-radius:14px;background:var(--paper)}
figcaption{margin-top:10px;font-size:13px;color:var(--ink-muted);line-height:1.5}

/* Checklist card */
.checklist{background:var(--paper);border:1px solid var(--rule);border-radius:14px;padding:22px;margin:28px 0}
.checklist h3{margin-top:0}
.checklist ul{list-style:none;padding-left:0;margin-bottom:0}
.checklist li{padding-left:28px;position:relative;margin-bottom:12px;font-size:15.5px}
.checklist li::before{content:"";position:absolute;left:2px;top:7px;width:13px;height:13px;
  border:2px solid var(--cobalt);border-radius:4px}

/* Product mention */
.product{background:var(--paper);border:1px solid var(--rule-strong);border-radius:16px;
  padding:24px;margin:34px 0}
.product .label{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;
  color:var(--cobalt);font-weight:700;margin:0 0 8px}
.product h3{margin:0 0 10px;font-family:var(--serif);font-size:1.28rem;font-weight:600}
.product p{font-size:15.5px;color:var(--ink-soft)}
.product p:last-of-type{margin-bottom:0}
.cta{display:inline-flex;align-items:center;gap:8px;margin-top:16px;background:var(--cobalt);color:#fff;
  text-decoration:none;font-weight:700;font-size:14.5px;padding:13px 20px;border-radius:11px}
.cta:hover{background:var(--cobalt-ink);color:#fff}

/* FAQ */
.faq details{border-bottom:1px solid var(--rule);padding:16px 0}
.faq summary{cursor:pointer;font-weight:700;font-size:16px;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;color:var(--cobalt);font-weight:700}
.faq details[open] summary::after{content:"\2013"}
.faq details p{margin:12px 0 0;color:var(--ink-soft);font-size:15.5px}

/* Related + sources */
.related ul{list-style:none;padding-left:0}
.related li{padding-left:20px;position:relative}
.related li::before{content:"\2192";position:absolute;left:0;color:var(--cobalt)}
.sources ol{font-size:14px;color:var(--ink-soft)}
.sources li{margin-bottom:7px}

/* Footer */
footer{margin-top:56px;border-top:1px solid var(--rule);background:var(--paper);
  padding:30px 0 44px;font-size:13px;color:var(--ink-muted);line-height:1.6}
footer a{color:var(--ink-soft)}
footer .disclaimer{margin-top:14px;font-size:12px}

@media (max-width:640px){
  body{font-size:16.5px}
  h1{font-size:1.95rem}
  h2{font-size:1.4rem}
  article{padding-top:32px}
}

/* Contextual app previews in selected guides. */
.article-demo{display:grid;grid-template-columns:minmax(0,250px) minmax(0,1fr);align-items:center;gap:30px;margin:30px 0 44px;padding:25px 30px;border:1px solid var(--rule);border-radius:16px;background:#f4f6f8}
.article-demo img{display:block;width:100%;height:auto;filter:drop-shadow(0 12px 18px rgba(16,37,74,.12))}
.article-demo figcaption{margin:0;color:var(--ink-soft);font-size:15px;line-height:1.55}
.article-demo .demo-label{font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--cobalt);font-weight:700}
.article-demo figcaption strong{display:block;margin:8px 0 12px;color:var(--ink);font-family:var(--serif);font-weight:600;font-size:clamp(1.45rem,3vw,1.8rem);line-height:1.2}
.article-demo figcaption p{margin:0;font-size:15px;line-height:1.6}
@media(max-width:640px){.article-demo{grid-template-columns:1fr;gap:16px;padding:22px}.article-demo img{max-width:235px;justify-self:center}.article-demo figcaption strong{font-size:1.5rem}}

/* Site-wide article readability */
body{font-size:1rem}.wrap{max-width:52rem}.masthead nav{flex-wrap:wrap}h1{overflow-wrap:anywhere}h2,h3{scroll-margin-top:2rem}.table-wrap{overflow-x:auto}table{min-width:0}th,td{overflow-wrap:anywhere}.byline,.eyebrow,.masthead nav a,figcaption,footer p{font-size:.875rem}.launch-link{display:inline-block;max-width:100%;white-space:normal}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #2469de;outline-offset:4px}.skip-link{position:absolute;left:12px;top:-100px}.skip-link:focus{top:12px;background:white;padding:12px;z-index:10}svg{max-width:100%;height:auto}.breadcrumbs{font-size:.875rem;margin:1.5rem 0}.legal-links{display:flex;flex-wrap:wrap;gap:1rem}@media(max-width:600px){table{font-size:.875rem}.masthead .wrap{flex-wrap:wrap}.masthead nav{margin-left:0;width:100%}}