/* Insight article layout, shared by all articles in /insights/. */
@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;600;700&family=IBM+Plex+Serif:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root{
  --petrol:#146873;
  --petrol-deep:#0e4d55;
  --petrol-light:#5a9ea3;
  --petrol-pale:#e3eded;
  --ink:#16242a;
  --slate:#52646a;
  --line:#dbe4e4;
  --bg:#ffffff;
  --paper:#f7fafa;
  --signal:#c07a53;      /* unmanaged / overload: muted, never alarmist */
  --signal-pale:#f0e2d9;
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"IBM Plex Sans",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.62;
  -webkit-font-smoothing:antialiased;
}
.wrap{max-width:760px;margin:0 auto;padding:0 28px;}

/* ---- article head ---- */
.head{padding:56px 0 28px;}
h1{
  font-family:"IBM Plex Serif",Georgia,serif;
  font-weight:500;
  font-size:40px;
  line-height:1.16;
  letter-spacing:-.01em;
  margin:0 0 20px;
}
.standfirst{font-size:20px;line-height:1.5;color:var(--slate);margin:0 0 30px;font-weight:400;}
.byline{display:flex;flex-wrap:wrap;gap:8px 18px;align-items:baseline;font-size:13px;color:var(--slate);padding-top:22px;border-top:1px solid var(--line);}
.byline .who{color:var(--ink);font-weight:500;}
.byline .src{font-family:"IBM Plex Mono",monospace;font-size:12px;}

/* ---- findings strip ---- */
.findings{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line);border-radius:4px;overflow:hidden;
  margin:8px 0 44px;background:var(--paper);
}
.findings .cell{padding:22px 18px;border-right:1px solid var(--line);}
.findings .cell:last-child{border-right:none;}
.findings .num{font-family:"IBM Plex Serif",serif;font-weight:600;font-size:30px;line-height:1;color:var(--petrol);letter-spacing:-.01em;}
.findings .num small{font-size:16px;font-weight:500;color:var(--petrol);}
.findings .lab{font-size:12.5px;line-height:1.4;color:var(--slate);margin-top:10px;}

/* ---- body ---- */
section{margin:0 0 40px;}
h2{
  font-family:"IBM Plex Sans",sans-serif;font-weight:600;font-size:14px;
  letter-spacing:.06em;text-transform:uppercase;color:var(--petrol);
  margin:0 0 16px;padding-bottom:10px;border-bottom:1px solid var(--line);
}
p{margin:0 0 18px;}
strong{font-weight:500;}
.lead-in{font-weight:500;color:var(--ink);}

/* ---- chart ---- */
figure{margin:36px 0;}
.chart-card{border:1px solid var(--line);border-radius:4px;padding:26px 22px 18px;background:var(--bg);}
.chart-title{font-family:"IBM Plex Sans",sans-serif;font-weight:500;font-size:14px;color:var(--ink);margin:0 0 4px;}
.chart-sub{font-size:12.5px;color:var(--slate);margin:0 0 18px;}
svg{display:block;width:100%;height:auto;}
figcaption{font-size:12.5px;color:var(--slate);margin-top:14px;line-height:1.5;}

/* ---- tables ---- */
.table-wrap{overflow-x:auto;margin:22px 0;}
table{width:100%;border-collapse:collapse;font-size:14px;}
caption{text-align:left;font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--slate);padding-bottom:12px;}
th,td{padding:11px 12px;text-align:right;border-bottom:1px solid var(--line);white-space:nowrap;}
th:first-child,td:first-child{text-align:left;white-space:normal;}
thead th{font-weight:500;color:var(--petrol);border-bottom:1.5px solid var(--petrol-light);font-size:13px;}
tbody tr:last-child td{border-bottom:1px solid var(--line);}
td.num{font-family:"IBM Plex Mono",monospace;}
tr.flag td{background:var(--signal-pale);}
.yes{color:#8f4f2d;font-weight:500;}
.no{color:var(--petrol);font-weight:500;}

/* ---- provenance ---- */
.provenance{background:var(--paper);border:1px solid var(--line);border-radius:4px;padding:10px 26px;margin:48px 0 0;}
.provenance dl{margin:0;display:grid;grid-template-columns:130px 1fr;gap:0;}
.provenance dt{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--slate);padding:12px 0;border-top:1px solid var(--line);}
.provenance dd{margin:0;padding:12px 0;border-top:1px solid var(--line);font-size:14px;color:var(--ink);}
.provenance dl>dt:first-child,.provenance dl>dt:first-child+dd{border-top:none;}

/* ---- links in article text ---- */
main a{color:var(--petrol);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:2px;}
main a:hover{color:var(--petrol-deep);}

/* ---- previous / next bar: under the site menu, stays visible while scrolling ---- */
.article-bar{position:sticky;top:60px;z-index:30;background:#FFFFFF;border-bottom:1px solid #E5EAF0;}
.article-bar-inner{max-width:1240px;margin:0 auto;padding:0 24px;height:42px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.article-bar a{display:flex;align-items:baseline;gap:10px;min-width:0;max-width:46%;text-decoration:none;}
.article-bar .dir{flex:none;font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--petrol);}
.article-bar a:hover .dir{text-decoration:underline;}

/* ---- footer (matches the site footer in site.css) ---- */
.foot{max-width:1240px;margin:56px auto 0;padding:22px 24px 40px;border-top:1px solid #E5EAF0;}
.foot-sig{margin-top:16px;display:flex;align-items:center;gap:14px;flex-wrap:wrap;font-family:"IBM Plex Mono",monospace;font-size:11.5px;color:#3C536C;}

@media (max-width:640px){
  h1{font-size:30px;}
  .standfirst{font-size:18px;}
  .findings{grid-template-columns:repeat(2,1fr);}
  .findings .cell:nth-child(2){border-right:none;}
  .findings .cell:nth-child(1),.findings .cell:nth-child(2){border-bottom:1px solid var(--line);}
  .provenance dl{grid-template-columns:1fr;}
  .provenance dd{padding-top:0;border-top:none;}
  .provenance dt{border-top:1px solid var(--line);padding-bottom:2px;}
  .provenance dl>dt:first-child+dd{border-top:none;}
}
/* ---- shared site header (mirrors assets/css/site.css nav; scoped so article styles are untouched) ---- */
.nav{--surface:#FFFFFF;--ink:#0F2438;--ink-2:#3C536C;--muted:#64758A;--rule:#E5EAF0;--rule-strong:#CDD7E1;--accent:#0B6C8C;--accent-ink:#075267;--shadow:0 1px 2px rgba(15,36,56,.04),0 1px 3px rgba(15,36,56,.06);
  background:var(--surface);border-bottom:1px solid var(--rule);position:sticky;top:0;z-index:40;font-family:"IBM Plex Sans",system-ui,-apple-system,sans-serif;line-height:1.5;}
.nav a{text-decoration:none;}
.nav-inner{max-width:1240px;margin:0 auto;padding:0 24px;height:60px;display:flex;align-items:center;gap:28px;}
.nav .brand{display:flex;align-items:baseline;font-weight:700;font-size:18px;letter-spacing:-.015em;color:var(--ink);}
.nav .brand .q{color:var(--accent);}
.nav .brand a{color:inherit;}
.nav-links{display:flex;gap:2px;margin-left:8px;}
.nav-links a{color:var(--ink-2);font-weight:500;font-size:13.5px;padding:19px 12px 18px;border-bottom:2px solid transparent;}
.nav-links a:hover,.nav-links a.active{color:var(--ink);}
.nav-links a.active{border-bottom-color:var(--accent);font-weight:600;}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:16px;}
.nav-mail{font-family:"IBM Plex Mono",monospace;font-size:12px;color:var(--muted);}
a.nav-mail:hover{color:var(--accent-ink);}
.nav-menu{display:contents;}
.nav-toggle{display:none;background:var(--surface);border:1px solid var(--rule-strong);border-radius:6px;color:var(--ink-2);padding:6px;line-height:0;margin-left:auto;cursor:pointer;}
.nav-toggle:hover{color:var(--ink);border-color:var(--accent);}
.nav-toggle svg{width:20px;height:20px;}
@media (max-width:820px){
  .nav-inner{gap:12px;}
  .nav-toggle{display:inline-flex;}
  .nav-menu{display:none;position:absolute;top:60px;left:0;right:0;background:var(--surface);border-bottom:1px solid var(--rule);box-shadow:var(--shadow);padding:6px 24px 14px;flex-direction:column;align-items:stretch;gap:0;}
  .nav-menu.open{display:flex;}
  .nav-links{flex-direction:column;gap:0;margin-left:0;}
  .nav-links a{padding:13px 4px;border-bottom:none;border-top:1px solid var(--rule);}
  .nav-links a:first-child{border-top:none;}
  .nav-links a.active{border-bottom:none;border-left:2px solid var(--accent);padding-left:10px;}
  .nav-right{margin-left:0;padding:13px 4px 2px;border-top:1px solid var(--rule);}
}
.skip{position:absolute;left:-9999px;top:8px;z-index:60;background:#fff;color:#075267;border:1px solid #CDD7E1;border-radius:6px;padding:8px 14px;font-size:13px;font-weight:600;}
.skip:focus{left:12px;}
.model-note{font-family:"IBM Plex Mono",monospace;font-size:12px;line-height:1.5;color:var(--slate);background:var(--paper);border:1px solid var(--line);border-left:3px solid var(--petrol-light);border-radius:4px;padding:12px 15px;margin:0 0 40px;}