/* FuturByte — editorial. One self-hosted serif for display, system sans for text
   and data. No JavaScript, no third-party requests. */

@font-face{
  font-family:"Source Serif";
  src:url("/assets/fonts/source-serif-4-head.woff2") format("woff2-variations"),
      url("/assets/fonts/source-serif-4-head.woff2") format("woff2");
  font-weight:500 700; font-style:normal; font-display:swap;
}

:root{
  /* ink */
  --ink:#191a1f; --ink-2:#4b515c; --ink-3:#767d89; --ink-4:#9aa1ac;
  /* surfaces: warm off-white rather than pure white */
  --bg:#fbfaf8; --bg-2:#f4f2ee; --bg-3:#ffffff;
  --line:#e4e0d9; --line-2:#d4cfc5;
  /* accent */
  --accent:#6C2BB0; --accent-2:#8B4AD1; --accent-wash:#f1eaf9;
  --accent-ink:#ffffff;
  /* data */
  --data:#6C2BB0; --data-soft:#cdbbe6; --data-mute:#ddd8cf;
  --good:#1f6f4a; --warn:#8a5206;

  --serif:"Source Serif",ui-serif,Georgia,"Times New Roman",serif;
  --sans:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --max:70ch; --wide:1180px; --gut:20px;
  --r:10px;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --ink:#ece9e4; --ink-2:#b3b0aa; --ink-3:#8b8882; --ink-4:#6e6b66;
  --bg:#15151a; --bg-2:#1d1d24; --bg-3:#22222a;
  --line:#2e2e37; --line-2:#3c3c47;
  --accent:#c4a0ee; --accent-2:#d7bdf6; --accent-wash:#241a33;
  --accent-ink:#15151a;
  --data:#b48ce6; --data-soft:#523d70; --data-mute:#34343d;
  --good:#6cc296; --warn:#d9a441;
}}
:root[data-theme="dark"]{
  --ink:#ece9e4; --ink-2:#b3b0aa; --ink-3:#8b8882; --ink-4:#6e6b66;
  --bg:#15151a; --bg-2:#1d1d24; --bg-3:#22222a;
  --line:#2e2e37; --line-2:#3c3c47;
  --accent:#c4a0ee; --accent-2:#d7bdf6; --accent-wash:#241a33;
  --accent-ink:#15151a;
  --data:#b48ce6; --data-soft:#523d70; --data-mute:#34343d;
  --good:#6cc296; --warn:#d9a441;
}

*{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(--sans);
  font-size:17.5px;line-height:1.7;letter-spacing:-.003em;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
.wrap{width:100%;max-width:var(--wide);margin:0 auto;padding:0 var(--gut)}
.skip{position:absolute;left:-9999px}
.skip:focus{left:12px;top:12px;background:var(--bg-3);padding:10px 14px;z-index:99;
  border:2px solid var(--accent);border-radius:6px}
a{color:var(--accent);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--accent-2)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:3px}

/* ---------------------------------------------------------------- header */
header.site{border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--bg) 88%,transparent);
  backdrop-filter:saturate(1.4) blur(8px);position:sticky;top:0;z-index:20}
header.site .wrap{display:flex;flex-wrap:wrap;gap:6px 22px;align-items:center;
  min-height:62px;padding-top:10px;padding-bottom:10px}
.brand{font-family:var(--serif);font-weight:700;font-size:22px;color:var(--ink);
  text-decoration:none;letter-spacing:-.02em;margin-right:auto}
header nav{display:flex;flex-wrap:wrap;gap:2px 20px;font-size:14.5px;font-weight:500}
header nav a{color:var(--ink-2);text-decoration:none;padding:3px 0;border-bottom:1.5px solid transparent}
header nav a:hover{color:var(--ink)}
header nav a[aria-current]{color:var(--ink);border-bottom-color:var(--accent)}

main{display:block;padding:0 0 72px}

/* ---------------------------------------------------------------- type */
h1{font-family:var(--serif);font-weight:600;font-size:clamp(34px,5.2vw,52px);
  line-height:1.08;letter-spacing:-.022em;margin:.36em 0 .28em;max-width:19ch}
h2{font-family:var(--serif);font-weight:600;font-size:clamp(25px,3.1vw,33px);
  line-height:1.18;letter-spacing:-.016em;margin:2.5em 0 .5em;max-width:26ch;
  scroll-margin-top:84px}
h3{font-family:var(--sans);font-weight:650;font-size:18.5px;line-height:1.35;
  letter-spacing:-.008em;margin:2em 0 .3em;max-width:40ch}
p,ul,ol,dl,details{max-width:var(--max)}
p{margin:0 0 1.15em}
.lede{font-size:clamp(19px,2.2vw,22.5px);line-height:1.5;color:var(--ink-2);
  max-width:56ch;margin:0 0 1.8em;letter-spacing:-.008em}
.note{font-size:13.5px;line-height:1.55;color:var(--ink-3);margin-top:.7em;max-width:78ch}
strong{font-weight:640;color:var(--ink)}
ul,ol{padding-left:1.15em}
li{margin:.4em 0}
li::marker{color:var(--ink-4)}

/* small-caps eyebrow */
.eyebrow{font-size:11.5px;font-weight:700;text-transform:uppercase;letter-spacing:.1em;
  color:var(--ink-3);margin:0 0 .5em}

/* ---------------------------------------------------------------- crumb */
.crumb{font-size:13px;color:var(--ink-3);margin:18px 0 0}
.crumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:7px;padding:0;margin:0;max-width:none}
.crumb li+li::before{content:"›";margin-right:7px;color:var(--line-2)}
.crumb a{color:var(--ink-3);text-decoration:none}
.crumb a:hover{color:var(--accent)}

/* ---------------------------------------------------------------- toc */
.toc{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r);
  padding:18px 24px 20px;margin:2.4em 0;max-width:var(--max)}
.toc h2{font-family:var(--sans);font-size:11.5px;font-weight:700;text-transform:uppercase;
  letter-spacing:.1em;margin:0 0 .7em;color:var(--ink-3)}
.toc ol{margin:0;padding-left:1.3em;font-size:15px;columns:2;column-gap:32px}
.toc li{margin:.28em 0;break-inside:avoid}
.toc a{color:var(--ink-2);text-decoration:none}
.toc a:hover{color:var(--accent);text-decoration:underline}
@media(max-width:660px){.toc ol{columns:1}}

/* ---------------------------------------------------------------- key facts */
.kf{background:var(--bg-3);border:1px solid var(--line);border-radius:var(--r);
  padding:6px 26px 20px;margin:2em 0 2.4em;max-width:var(--max);
  box-shadow:0 1px 2px rgba(25,26,31,.03),0 8px 24px -16px rgba(25,26,31,.16)}
.kf h2{font-family:var(--sans);font-size:11.5px;font-weight:700;text-transform:uppercase;
  letter-spacing:.1em;margin:1.4em 0 .2em;color:var(--ink-3)}
dl{margin:0}
dt{font-weight:640;margin-top:1.1em;color:var(--ink)}
dd{margin:.15em 0 0;color:var(--ink-2)}
.kf dl{display:grid;grid-template-columns:1fr auto;gap:0}
.kf dt{margin:0;font-weight:450;color:var(--ink-2);font-size:15.5px;
  padding:12px 16px 12px 0;border-bottom:1px solid var(--line)}
.kf dd{margin:0;font-weight:650;color:var(--ink);text-align:right;
  font-variant-numeric:tabular-nums;font-size:17px;
  padding:12px 0;border-bottom:1px solid var(--line)}
.kf dl>dt:last-of-type,.kf dl>dd:last-of-type{border-bottom:0}

/* ---------------------------------------------------------------- tables */
.tw{overflow-x:auto;margin:1.7em 0;max-width:100%;
  border:1px solid var(--line);border-radius:var(--r);background:var(--bg-3)}
table{border-collapse:collapse;width:100%;font-size:15px;min-width:560px}
caption{text-align:left;font-size:13px;font-weight:600;color:var(--ink-3);
  padding:15px 18px 11px;text-transform:uppercase;letter-spacing:.06em}
th,td{text-align:left;padding:11px 18px;border-top:1px solid var(--line);vertical-align:top}
thead th{font-weight:650;font-size:12px;text-transform:uppercase;letter-spacing:.05em;
  color:var(--ink-3);background:var(--bg-2);border-top:1px solid var(--line)}
td+td,th+th{text-align:right;font-variant-numeric:tabular-nums}
th:first-child,td:first-child{min-width:190px;font-weight:500}
tbody tr:hover{background:var(--bg-2)}
td a{text-decoration:none;font-weight:550}
td a:hover{text-decoration:underline}

/* ---------------------------------------------------------------- charts */
figure.chart{margin:1.8em 0 2em;max-width:var(--max)}
figure.chart.wide{max-width:none}
figure.chart figcaption{font-size:13px;font-weight:600;color:var(--ink-3);
  text-transform:uppercase;letter-spacing:.06em;margin-bottom:1em}
figure.chart svg{display:block;width:100%;height:auto;overflow:visible}
.chart .grid-line{stroke:var(--line);stroke-width:1}
.chart .axis-text{fill:var(--ink-3);font-family:var(--sans);font-size:12px;
  font-variant-numeric:tabular-nums}
.chart .bar{fill:var(--data-soft)}
.chart .bar.is-focus{fill:var(--data)}
.chart .val{fill:var(--ink-2);font-family:var(--sans);font-size:12.5px;font-weight:600;
  font-variant-numeric:tabular-nums}
.chart .val.is-focus{fill:var(--ink)}
.chart .name{fill:var(--ink-2);font-family:var(--sans);font-size:13px}
.chart .name.is-focus{fill:var(--ink);font-weight:650}
.chart .range-track{fill:var(--data-mute)}
.chart .range-fill{fill:var(--data-soft)}
.chart .marker{fill:var(--data)}
.chart .marker-ring{fill:none;stroke:var(--bg);stroke-width:2}
.chart .tick{stroke:var(--ink-4);stroke-width:1}

/* ---------------------------------------------------------------- grids */
ul.grid{list-style:none;padding:0;max-width:none;display:grid;
  grid-template-columns:repeat(auto-fill,minmax(232px,1fr));gap:10px;margin:1.6em 0}
ul.grid li{margin:0;background:var(--bg-3);border:1px solid var(--line);
  border-radius:8px;transition:border-color .12s,transform .12s}
ul.grid li:hover{border-color:var(--line-2);transform:translateY(-1px)}
ul.grid a{text-decoration:none;font-weight:600;display:block;padding:13px 16px;color:var(--ink)}
ul.grid a:hover{color:var(--accent)}
ul.grid span{display:block;font-size:13px;color:var(--ink-3);font-weight:450;
  font-variant-numeric:tabular-nums;margin-top:2px}

/* ---------------------------------------------------------------- details */
details{border-bottom:1px solid var(--line);padding:0}
details[open]{background:linear-gradient(var(--bg-2),var(--bg-2)) no-repeat;
  background-size:100% 100%}
summary{cursor:pointer;padding:16px 0;font-weight:600;font-size:16.5px;
  list-style:none;display:flex;justify-content:space-between;gap:16px;align-items:flex-start}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--accent);font-weight:400;font-size:21px;
  line-height:1;flex:none;transition:transform .15s}
details[open] summary::after{transform:rotate(45deg)}
summary:hover{color:var(--accent)}
details>div{padding:0 0 14px}
details p{color:var(--ink-2);margin:0;max-width:66ch}

/* ---------------------------------------------------------------- cta + form */
.cta{background:var(--bg-3);border:1px solid var(--line);border-left:3px solid var(--accent);
  border-radius:0 var(--r) var(--r) 0;padding:26px 30px;margin:3em 0 0;max-width:var(--max)}
.cta h2{font-size:25px;margin:0 0 .35em;max-width:24ch}
.cta p{color:var(--ink-2);margin-bottom:1.1em}
.btn{display:inline-block;background:var(--accent);color:var(--accent-ink);
  text-decoration:none;font-weight:600;font-size:16px;padding:13px 26px;border-radius:8px;
  border:0;cursor:pointer;font-family:var(--sans);transition:background .12s}
.btn:hover{background:var(--accent-2);color:var(--accent-ink)}
.btn.ghost{background:transparent;color:var(--accent);border:1.5px solid var(--line-2)}
.btn.ghost:hover{border-color:var(--accent);background:var(--accent-wash);color:var(--accent)}

.lead{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r);
  padding:28px 30px 30px;margin:3em 0 0;max-width:var(--max)}
.lead h2{font-size:26px;margin:0 0 .3em;max-width:24ch}
.lead>p{color:var(--ink-2);max-width:58ch}
.lead form{margin-top:1.4em;max-width:none}
.lead .row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.lead label{display:block;font-size:13.5px;font-weight:600;color:var(--ink-2);
  margin:0 0 5px;letter-spacing:.005em}
.lead .field{margin-bottom:14px}
.lead input,.lead textarea,.lead select{
  width:100%;font:inherit;font-size:16px;color:var(--ink);background:var(--bg-3);
  border:1px solid var(--line-2);border-radius:7px;padding:11px 13px;
  font-family:var(--sans);transition:border-color .12s,box-shadow .12s}
.lead textarea{min-height:104px;resize:vertical;line-height:1.55}
.lead input:focus,.lead textarea:focus,.lead select:focus{
  outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-wash)}
.lead input::placeholder,.lead textarea::placeholder{color:var(--ink-4)}
.lead .hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.lead .actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-top:4px}
.lead .fine{font-size:13px;color:var(--ink-3);margin:.9em 0 0;max-width:58ch}
.lead .fine a{color:var(--ink-2)}
@media(max-width:620px){.lead .row{grid-template-columns:1fr}}

/* ---------------------------------------------------------------- footer */
footer.site{border-top:1px solid var(--line);background:var(--bg-2);
  padding:46px 0 52px;font-size:15px;color:var(--ink-2);margin-top:40px}
.fcols{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));
  gap:30px;margin-bottom:34px}
.fcols h2{font-family:var(--sans);font-size:11.5px;font-weight:700;text-transform:uppercase;
  letter-spacing:.1em;margin:0 0 .8em;color:var(--ink-3)}
.fcols ul{list-style:none;padding:0;margin:0}
.fcols li{margin:.4em 0}
.fcols a{text-decoration:none;color:var(--ink-2)}
.fcols a:hover{color:var(--accent)}
.src{font-size:13px;line-height:1.6;color:var(--ink-3);max-width:84ch;
  border-top:1px solid var(--line);padding-top:22px}
.src a{color:var(--ink-2)}
.fine{font-size:13px;color:var(--ink-3)}

/* ---------------------------------------------------------------- mobile */
@media(max-width:600px){
  :root{--gut:16px}
  body{font-size:16.5px;line-height:1.65}
  h1{font-size:30px;max-width:none}
  h2{font-size:23px;margin-top:2.1em}
  .lede{font-size:18px}
  .kf{padding:4px 18px 16px}
  .kf dl{grid-template-columns:1fr}
  .kf dt{padding:12px 0 0;border-bottom:0;font-size:14px}
  .kf dd{padding:1px 0 12px;text-align:left;font-size:18px;border-bottom:1px solid var(--line)}
  .kf dl>dd:last-of-type{border-bottom:0}
  ul.grid{grid-template-columns:1fr}
  .cta,.lead{padding:22px 20px}
  .cta h2,.lead h2{font-size:22px}
  table{font-size:14px}
  th,td{padding:10px 14px}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}
@media print{
  header.site,.toc,.cta,.lead,footer .fcols{display:none}
  body{font-size:11pt}
  .tw{border:0}
}

/* AdSense units. Space is reserved while an ad is pending so the article does
   not jump when it arrives, and the whole block is removed once AdSense says
   it could not fill it. Without that second rule an unfilled responsive unit
   holds about 280px of blank page, which is what the reader gets whenever
   there is no ad to serve or a blocker is running. */
.ad{margin:2.5rem 0;min-height:100px;overflow:hidden}
.ad ins{display:block}
.ad:has(ins[data-ad-status="unfilled"]){display:none}
ins.adsbygoogle[data-ad-status="unfilled"]{display:none!important}
@media (max-width:640px){.ad{margin:2rem 0}}