/* Shared styles for /blog/. The homepage keeps its CSS inline because it is a
   single self-contained tool; the blog has enough pages that one cached
   stylesheet beats duplicating ~15KB into every article. */

:root{
  --ground:#E9EDF0;
  --panel:#FFFFFF;
  --ink:#141F28;
  --ink-soft:#5C6B77;
  --ink-faint:#8A98A3;
  --fluid:#0E7C9B;
  --fluid-deep:#0A5D75;
  --hairline:#D2D9DF;
  --warn:#A84A16;
  --warn-bg:#FBF1E8;
  --r:3px;
  --sans:"Instrument Sans",system-ui,-apple-system,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,monospace;
}

@font-face{font-family:'Instrument Sans';font-style:normal;font-weight:400 700;font-display:swap;
  src:url('/fonts/InstrumentSans-400-700.woff2') format('woff2')}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:400;font-display:swap;
  src:url('/fonts/IBMPlexMono-400.woff2') format('woff2')}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:500;font-display:swap;
  src:url('/fonts/IBMPlexMono-500.woff2') format('woff2')}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:600;font-display:swap;
  src:url('/fonts/IBMPlexMono-600.woff2') format('woff2')}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}

body{
  margin:0;
  background:var(--ground);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

.wrap{max-width:1080px;margin:0 auto;padding:0 24px}

/* ---------- site bar ---------- */
.sitebar{
  border-bottom:1px solid var(--hairline);
  background:var(--panel);
}
.sitebar .wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  height:56px;
}
.brand{
  font-family:var(--mono);
  font-size:.8125rem;
  letter-spacing:.02em;
  color:var(--ink);
  text-decoration:none;
  font-weight:500;
  display:flex;
  align-items:center;
  gap:9px;
}
.brand .chip{
  width:22px;height:12px;
  border-radius:6px;
  background:var(--hairline);
  position:relative;
  flex:none;
}
.brand .chip::before{
  content:"";
  position:absolute;
  inset:0 auto 0 0;
  width:45%;
  border-radius:6px 0 0 6px;
  background:var(--fluid);
}
.sitebar nav{display:flex;gap:20px}
.sitebar nav a{
  font-size:.875rem;
  color:var(--ink-soft);
  text-decoration:none;
}
.sitebar nav a:hover{color:var(--fluid-deep)}
.sitebar nav a[aria-current="page"]{color:var(--ink);font-weight:500}

/* ---------- article ---------- */
.crumbs{
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--ink-faint);
  padding:34px 0 0;
}
.crumbs a{color:var(--ink-faint);text-decoration:none}
.crumbs a:hover{color:var(--fluid-deep)}

article,.listing{max-width:68ch;padding-bottom:24px}

h1{
  font-size:clamp(1.9rem,4.4vw,2.7rem);
  line-height:1.08;
  letter-spacing:-.026em;
  font-weight:700;
  margin:18px 0 14px;
}
.standfirst{
  font-size:1.0625rem;
  color:var(--ink-soft);
  margin:0 0 18px;
}
.meta{
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--ink-faint);
  padding-bottom:26px;
  border-bottom:1px solid var(--hairline);
  margin-bottom:34px;
}

article h2{
  font-size:1.375rem;
  letter-spacing:-.016em;
  font-weight:600;
  margin:46px 0 14px;
}
article h3{font-size:1rem;font-weight:600;margin:28px 0 7px}
article p{margin:0 0 15px;color:#2C3A45}
article ul,article ol{margin:0 0 15px;padding-left:20px;color:#2C3A45}
article li{margin-bottom:7px}
article strong{font-weight:600}
article a{color:var(--fluid-deep);text-decoration:underline;text-underline-offset:2px}
article a:hover{color:var(--fluid)}

.formula{
  font-family:var(--mono);
  font-size:.875rem;
  background:var(--panel);
  border:1px solid var(--hairline);
  border-left:2px solid var(--fluid);
  border-radius:var(--r);
  padding:18px 20px;
  margin:20px 0;
  line-height:2;
  overflow-x:auto;
  white-space:nowrap;
}
.formula b{font-weight:600;color:var(--fluid-deep)}

.tablewrap{
  overflow-x:auto;
  margin:20px 0;
  border:1px solid var(--hairline);
  border-radius:var(--r);
  background:var(--panel);
}
table{border-collapse:collapse;width:100%;min-width:440px;font-size:.875rem}
caption{
  caption-side:top;
  text-align:left;
  font-family:var(--mono);
  font-size:10px;
  letter-spacing:.13em;
  text-transform:uppercase;
  color:var(--ink-faint);
  padding:14px 16px 10px;
}
th,td{
  padding:9px 16px;
  text-align:right;
  border-bottom:1px solid var(--hairline);
  font-variant-numeric:tabular-nums;
}
th:first-child,td:first-child{text-align:left}
thead th{
  font-family:var(--mono);
  font-size:.75rem;
  font-weight:500;
  color:var(--ink-soft);
  background:#F7F9FA;
  white-space:nowrap;
}
tbody th{font-weight:500;white-space:nowrap}
tbody td{font-family:var(--mono);color:var(--fluid-deep)}
tbody tr:last-child th,tbody tr:last-child td{border-bottom:none}
tbody tr:hover td,tbody tr:hover th{background:#F7F9FA}
.tnote{font-size:.8125rem;color:var(--ink-faint);margin:-8px 0 0}

.callout{
  background:var(--panel);
  border:1px solid var(--hairline);
  border-left:2px solid var(--fluid);
  border-radius:var(--r);
  padding:18px 20px;
  margin:22px 0;
}
.callout p{margin:0}
.callout p + p{margin-top:10px}

.cta{
  display:block;
  background:var(--panel);
  border:1px solid var(--hairline);
  border-radius:var(--r);
  padding:20px 22px;
  margin:32px 0;
  text-decoration:none;
}
.cta:hover{border-color:var(--fluid)}
.cta .k{
  font-family:var(--mono);
  font-size:10px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--ink-faint);
  display:block;
  margin-bottom:6px;
}
.cta .t{
  font-size:1.0625rem;
  font-weight:600;
  color:var(--ink);
  display:block;
  margin-bottom:4px;
}
.cta .d{font-size:.875rem;color:var(--ink-soft);display:block}

/* ---------- listing ---------- */
.postlist{list-style:none;padding:0;margin:0}
.postlist li{border-bottom:1px solid var(--hairline)}
.postlist li:last-child{border-bottom:none}
.postlist a{
  display:block;
  padding:22px 0;
  text-decoration:none;
}
.postlist a:hover .pt{color:var(--fluid-deep)}
.pd{
  font-family:var(--mono);
  font-size:10.5px;
  letter-spacing:.13em;
  text-transform:uppercase;
  color:var(--ink-faint);
  display:block;
  margin-bottom:6px;
}
.pt{
  font-size:1.1875rem;
  font-weight:600;
  letter-spacing:-.012em;
  color:var(--ink);
  display:block;
  margin-bottom:5px;
  line-height:1.3;
}
.px{font-size:.9375rem;color:var(--ink-soft);display:block}

/* ---------- more / footer ---------- */
.more{
  border-top:1px solid var(--hairline);
  margin-top:48px;
  padding-top:26px;
}
.more h2{font-size:.8125rem;font-family:var(--mono);letter-spacing:.13em;
  text-transform:uppercase;color:var(--ink-faint);font-weight:400;margin:0 0 4px}

.disclaimer{
  border-top:1px solid var(--hairline);
  margin-top:52px;
  padding:24px 0 72px;
  font-size:.8438rem;
  color:var(--ink-soft);
  line-height:1.6;
  max-width:70ch;
}
.disclaimer strong{color:var(--ink);font-weight:600}
.disclaimer p{margin:0 0 12px}
.disclaimer p:last-child{margin-bottom:0}

@media (max-width:760px){
  .wrap{padding:0 18px}
  .sitebar nav{gap:14px}
  .sitebar nav a{font-size:.8125rem}
}