:root{
  --accent: #14506e;
  --ink:#16202a;
  --ink-2:#5b6773;
  --ink-3:#7d8894;
  --rule:#dde3e9;
  --rule-soft:#eaeef2;
  --bg:#ffffff;
  --bg-soft:#f6f8fa;
  --bg-tint:#eef3f7;
  --shell:78rem;
  --measure:43rem;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-heading: Charter, "Iowan Old Style", Georgia, "Times New Roman", serif;
  --font-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font-body);font-size:17px;line-height:1.7;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto}
a{color:var(--accent);text-decoration-thickness:1px;text-underline-offset:2px}
a:hover{text-decoration:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.shell{max-width:var(--shell);margin:0 auto;padding:0 1.5rem}
.skip-link{position:absolute;left:-9999px}
.skip-link:focus{left:1rem;top:.75rem;z-index:20;background:#fff;padding:.6rem .9rem;border:2px solid var(--accent)}

/* masthead */
.masthead{border-bottom:1px solid var(--rule);background:var(--bg)}
.masthead-inner{display:flex;flex-wrap:wrap;gap:.75rem 2rem;align-items:center;justify-content:space-between;padding-top:1.15rem;padding-bottom:1.15rem}
.wordmark{text-decoration:none;color:var(--ink);display:block}
.wordmark-name{display:block;font-family:var(--font-heading);font-size:1.4rem;font-weight:700;letter-spacing:-.015em;line-height:1.1}
.wordmark-tag{display:block;font-family:var(--font-ui);font-size:.68rem;text-transform:uppercase;letter-spacing:.11em;color:var(--ink-3);margin-top:.3rem}
.masthead-nav{display:flex;gap:1.6rem}
.masthead-nav a{font-family:var(--font-ui);font-size:.92rem;color:var(--ink-2);text-decoration:none;padding:.2rem 0;border-bottom:2px solid transparent}
.masthead-nav a:hover{color:var(--accent);border-bottom-color:var(--accent)}

/* page head */
.page-head{padding-top:3rem;padding-bottom:1.75rem;max-width:calc(var(--measure) + 3rem)}
.page-home .page-head{max-width:calc(var(--measure) + 6rem)}
.eyebrow{font-family:var(--font-ui);font-size:.7rem;text-transform:uppercase;letter-spacing:.13em;color:var(--accent);margin:0 0 .9rem;font-weight:600}
.crumbs{font-family:var(--font-ui);font-size:.8rem;color:var(--ink-3);margin-bottom:1rem;display:flex;gap:.5rem;flex-wrap:wrap}
.crumbs a{color:var(--ink-2);text-decoration:none}
.crumbs a:hover{color:var(--accent)}
.page-title{font-family:var(--font-heading);font-size:clamp(2rem,4.2vw,2.85rem);line-height:1.14;letter-spacing:-.02em;margin:0 0 1rem;text-wrap:balance}
.standfirst{font-size:1.16rem;line-height:1.6;color:var(--ink-2);margin:0 0 1.4rem;max-width:38rem}
.byline{font-family:var(--font-ui);font-size:.82rem;color:var(--ink-3);margin:0;padding-top:1rem;border-top:1px solid var(--rule-soft);display:flex;flex-wrap:wrap;gap:.5rem}
.byline .dot{color:var(--rule)}
.hero{margin:0 auto 2.5rem;max-width:var(--shell)}
.hero img{display:block;width:100%;border-radius:3px}

/* layout with sticky toc */
.layout{display:block;padding-bottom:3.5rem}
.layout-main{max-width:var(--measure)}
@media (min-width:1080px){
  .layout{display:grid;grid-template-columns:16rem minmax(0,var(--measure));gap:3.5rem;align-items:start}
  .layout-side{position:sticky;top:2rem}
  .layout-main{max-width:none}
}

/* toc */
.toc{border-left:2px solid var(--accent);padding:.15rem 0 .15rem 1rem;font-family:var(--font-ui)}
.toc-heading{font-size:.7rem;text-transform:uppercase;letter-spacing:.11em;color:var(--ink-3);margin:0 0 .6rem;font-weight:600}
.toc ul{list-style:none;margin:0;padding:0}
.toc li{margin:0 0 .45rem;line-height:1.4}
.toc ul ul{margin:.4rem 0 .5rem .8rem}
.toc a{font-size:.86rem;color:var(--ink-2);text-decoration:none;display:block}
.toc a:hover{color:var(--accent)}
@media (max-width:1079px){
  .toc{background:var(--bg-soft);border-left:3px solid var(--accent);padding:1.1rem 1.25rem;margin:0 0 2rem}
  .toc a{font-size:.9rem}
}

/* article body */
.post-body>*:first-child{margin-top:0}
.post-body h2{font-family:var(--font-heading);font-size:1.62rem;line-height:1.25;letter-spacing:-.012em;margin:3rem 0 1rem;padding-bottom:.5rem;border-bottom:1px solid var(--rule)}
.post-body h3{font-family:var(--font-heading);font-size:1.22rem;line-height:1.3;margin:2.1rem 0 .7rem}
.post-body h4{font-size:1.02rem;margin:1.6rem 0 .5rem}
.post-body p{margin:0 0 1.25rem}
.post-body ul,.post-body ol{margin:0 0 1.25rem;padding-left:1.35rem}
.post-body li{margin:0 0 .55rem}
.post-body li>ul,.post-body li>ol{margin-top:.55rem}
.post-body strong{font-weight:650}
.post-body hr{border:0;border-top:1px solid var(--rule);margin:2.75rem 0}
.post-body a{font-weight:500}

/* tables */
.post-body table{width:100%;border-collapse:collapse;margin:1.75rem 0;font-family:var(--font-ui);font-size:.92rem;line-height:1.5}
.post-body thead th{background:var(--bg-tint);font-weight:650;text-align:left;color:var(--ink);border-bottom:2px solid var(--accent)}
.post-body th,.post-body td{padding:.65rem .8rem;border:1px solid var(--rule);vertical-align:top}
.post-body tbody tr:nth-child(even){background:var(--bg-soft)}
.table-scroll{overflow-x:auto;margin:1.75rem 0}
.table-scroll table{margin:0}

/* callouts */
.post-body blockquote{margin:1.75rem 0;padding:1.1rem 1.3rem;background:var(--bg-soft);border-left:3px solid var(--accent);font-size:.98rem}
.post-body blockquote p{margin:0 0 .7rem}
.post-body blockquote p:last-child{margin-bottom:0}
.post-body blockquote strong:first-child{color:var(--accent)}
.post-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.88em;background:var(--bg-tint);padding:.12em .38em;border-radius:2px}
.post-body pre{background:var(--bg-soft);border:1px solid var(--rule);padding:1rem;overflow-x:auto;font-size:.88rem}
.post-body pre code{background:none;padding:0}
.inline-figure{margin:2rem 0}
.inline-figure img{display:block;border-radius:3px}
.inline-figure figcaption{font-family:var(--font-ui);font-size:.82rem;color:var(--ink-3);margin-top:.6rem}

/* sections */
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;border-top:1px solid var(--rule);padding-top:1.5rem;margin-bottom:1.5rem}
.section-title{font-family:var(--font-heading);font-size:1.45rem;letter-spacing:-.012em;margin:0}
.section-note{font-family:var(--font-ui);font-size:.8rem;color:var(--ink-3);margin:0}

/* guide cards */
.guides{padding-bottom:4rem}
.card-grid{list-style:none;margin:0;padding:0;display:grid;gap:1px;background:var(--rule);border:1px solid var(--rule);grid-template-columns:repeat(auto-fill,minmax(17rem,1fr))}
.card{background:var(--bg)}
.card-link{display:block;height:100%;padding:1.25rem 1.35rem;text-decoration:none;color:inherit;background:var(--bg);transition:background .12s ease}
.card-link:hover{background:var(--bg-soft)}
.card-title{font-family:var(--font-heading);font-size:1.04rem;line-height:1.35;margin:0 0 .5rem;color:var(--accent)}
.card-desc{font-size:.9rem;line-height:1.55;color:var(--ink-2);margin:0 0 .75rem}
.card-meta{font-family:var(--font-ui);font-size:.72rem;text-transform:uppercase;letter-spacing:.09em;color:var(--ink-3)}

/* related */
.related{margin-top:3.5rem;border-top:1px solid var(--rule);padding-top:1.5rem}
.related .section-title{margin-bottom:1rem}
.related-list{list-style:none;margin:0;padding:0;columns:2;column-gap:2.5rem}
.related-list li{margin:0 0 .7rem;break-inside:avoid;font-size:.95rem;line-height:1.45}
.related-meta{font-family:var(--font-ui);font-size:.75rem;color:var(--ink-3);white-space:nowrap}

/* footer */
.site-footer{border-top:1px solid var(--rule);background:var(--bg-soft);margin-top:2rem;padding:2.75rem 0 1.75rem}
.footer-grid{display:grid;gap:2rem;grid-template-columns:1fr;padding-bottom:2rem}
@media (min-width:820px){.footer-grid{grid-template-columns:2fr 1fr 1fr;gap:3rem}}
.footer-brand{font-family:var(--font-heading);font-size:1.1rem;font-weight:700;margin:0 0 .6rem}
.footer-text{font-size:.9rem;line-height:1.6;color:var(--ink-2);margin:0;max-width:32rem}
.footer-heading{font-family:var(--font-ui);font-size:.7rem;text-transform:uppercase;letter-spacing:.11em;color:var(--ink-3);margin:0 0 .7rem;font-weight:600}
.footer-list{list-style:none;margin:0;padding:0}
.footer-list li{margin:0 0 .5rem}
.footer-list a{font-size:.9rem;color:var(--ink-2);text-decoration:none}
.footer-list a:hover{color:var(--accent)}
.footer-legal{border-top:1px solid var(--rule);padding-top:1.25rem;display:flex;flex-wrap:wrap;gap:.5rem 2rem;justify-content:space-between}
.footer-legal p{font-family:var(--font-ui);font-size:.8rem;color:var(--ink-3);margin:0}
.footer-legal a{color:var(--ink-2);text-decoration:none}

@media (max-width:640px){
  body{font-size:16px}
  .page-head{padding-top:2rem}
  .post-body h2{font-size:1.4rem;margin-top:2.4rem}
  .related-list{columns:1}
  .masthead-inner{padding-top:.9rem;padding-bottom:.9rem}
  .masthead-nav{gap:1.15rem}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
@media print{.masthead,.site-footer,.toc,.related,.guides{display:none}.layout{display:block}}