:root {
  --ink: #0d0d0d;
  --paper: #f4f1ea;
  --paper-deep: #ebe6db;
  --accent: #b8331f;
  --accent-2: #1e4d3a;
  --rule: #1a1a1a;
  --muted: #6b6457;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: 'Inter Tight', sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

/* === Masthead — transparent so globe shows through === */
.masthead {
  border-bottom: 3px double var(--rule);
  padding: 24px 0 18px;
  background: transparent;
}
.masthead-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.brand {
  font-family: 'Fraunces', serif;
  font-weight: 800;
  font-size: clamp(28px, 4vw, 42px);
  letter-spacing: -0.02em;
  line-height: 1;
  text-decoration: none;
  color: var(--ink);
}
.brand span { color: var(--accent); }
.dateline {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--muted);
}
nav.subnav {
  border-bottom: 1px solid var(--rule);
  background: var(--ink);
  color: var(--paper);
}
nav.subnav ul {
  max-width: 1180px;
  margin: 0 auto;
  padding: 10px 24px;
  display: flex;
  gap: 28px;
  list-style: none;
  flex-wrap: wrap;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
nav.subnav a {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: border-color 0.2s;
}
nav.subnav a:hover { border-color: var(--accent); }

/* === Article === */
.article {
  max-width: 760px;
  margin: 0 auto;
  padding: 64px 24px;
}
.kicker {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 16px;
}
.article h1 {
  font-family: 'Fraunces', serif;
  font-size: clamp(36px, 5vw, 54px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin-bottom: 16px;
}
.article .deck {
  font-family: 'Fraunces', serif;
  font-style: italic;
  font-size: 20px;
  line-height: 1.5;
  color: var(--muted);
  margin-bottom: 32px;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 24px;
}
.article h2 {
  font-family: 'Fraunces', serif;
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 40px 0 14px;
  line-height: 1.15;
}
.article h3 {
  font-family: 'Fraunces', serif;
  font-size: 22px;
  font-weight: 600;
  margin: 28px 0 10px;
  line-height: 1.2;
}
.article p {
  font-size: 17px;
  line-height: 1.7;
  margin-bottom: 18px;
}
.article .first-para::first-letter {
  font-family: 'Fraunces', serif;
  font-size: 64px;
  font-weight: 800;
  float: left;
  line-height: 0.85;
  margin: 6px 8px 0 0;
  color: var(--accent);
}
.article ul, .article ol {
  padding-left: 24px;
  margin-bottom: 18px;
}
.article li {
  font-size: 17px;
  line-height: 1.7;
  margin-bottom: 6px;
}
.article a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
.article em { font-style: italic; }

.formula {
  background: var(--ink);
  color: var(--paper);
  padding: 24px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 15px;
  line-height: 1.5;
  margin: 24px 0;
  border-left: 4px solid var(--accent);
}

.math-list {
  background: var(--paper-deep);
  border-left: 3px solid var(--accent);
  padding: 20px 20px 20px 44px;
  margin: 20px 0;
  list-style: none !important;
}
.math-list li {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  margin-bottom: 4px;
  position: relative;
  padding-left: 16px;
}
.math-list li::before {
  content: '→';
  color: var(--accent);
  position: absolute;
  left: -4px;
}
.math-list li strong { color: var(--accent); }

.cta {
  display: inline-block;
  background: var(--ink);
  color: var(--paper) !important;
  padding: 12px 20px;
  text-decoration: none !important;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin: 8px 0;
  transition: background 0.15s;
}
.cta:hover { background: var(--accent); }

.callout {
  background: var(--paper-deep);
  border: 1px solid var(--rule);
  padding: 20px 24px;
  margin: 24px 0;
}
.callout h4 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 8px;
}
.callout p { margin-bottom: 0; font-size: 16px; }

table.compare {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 15px;
}
table.compare th, table.compare td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}
table.compare th {
  background: var(--ink);
  color: var(--paper);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
table.compare tr:nth-child(even) { background: var(--paper-deep); }

/* === Ad slot === */
.ad-slot {
  margin: 36px 0;
  text-align: center;
}
.ad-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--muted);
  margin-bottom: 8px;
  display: block;
}
.ad-placeholder {
  background: var(--paper-deep);
  border: 1px dashed #aaa;
  padding: 24px;
  color: var(--muted);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* === FAQ === */
.faq-item {
  border-bottom: 1px solid var(--rule);
  padding: 16px 0;
}
.faq-item summary {
  font-family: 'Fraunces', serif;
  font-size: 18px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-family: 'JetBrains Mono', monospace;
  font-size: 22px;
  color: var(--accent);
}
.faq-item[open] summary::after { content: '−'; }
.faq-item p {
  margin-top: 10px;
  color: var(--muted);
  font-size: 16px;
}

/* === Divider + Related === */
.divider {
  border: none;
  border-top: 3px double var(--rule);
  margin: 48px 0 32px;
}
.related h3 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--muted);
  margin-bottom: 12px;
}
.related ul { list-style: none; padding: 0; }
.related li {
  margin-bottom: 8px;
  padding-left: 16px;
  position: relative;
}
.related li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent);
}
.related a {
  color: var(--ink);
  text-decoration: none;
  font-family: 'Fraunces', serif;
  font-size: 18px;
  border-bottom: 1px solid transparent;
}
.related a:hover { border-color: var(--accent); }

/* === Disclaimer + Footer === */
.disclaimer {
  background: var(--paper-deep);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 24px 0;
}
.disclaimer-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--muted);
}
.disclaimer strong {
  color: var(--ink);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 6px;
}
footer {
  background: var(--ink);
  color: var(--paper);
  padding: 32px 0;
}
.footer-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
  text-align: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
}
footer a {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid var(--accent);
}

/* === Article index page === */
.index-hero {
  max-width: 1180px;
  margin: 0 auto;
  padding: 60px 24px 30px;
  border-bottom: 1px solid var(--rule);
}
.index-hero h1 {
  font-family: 'Fraunces', serif;
  font-size: clamp(40px, 6vw, 64px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1;
}
.index-hero p {
  font-family: 'Fraunces', serif;
  font-style: italic;
  font-size: 19px;
  color: var(--muted);
  margin-top: 16px;
  max-width: 600px;
}
.article-list {
  max-width: 1180px;
  margin: 0 auto;
  padding: 40px 24px 80px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}
@media (max-width: 760px) {
  .article-list { grid-template-columns: 1fr; }
}
.article-card {
  background: #fff;
  border: 1px solid var(--rule);
  padding: 28px;
  box-shadow: 4px 4px 0 var(--ink);
  transition: transform 0.15s, box-shadow 0.15s;
  text-decoration: none;
  color: var(--ink);
  display: block;
}
.article-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--ink);
}
.article-card .card-kicker {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 8px;
}
.article-card h2 {
  font-family: 'Fraunces', serif;
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.15;
  margin-bottom: 10px;
}
.article-card p {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.5;
}

/* Institutional purple and gold market-data theme override */
:root {
  --ink: #f3d98b;
  --paper: #160821;
  --paper-deep: #241033;
  --accent: #d7b24a;
  --accent-2: #f0cc67;
  --rule: rgba(215, 178, 74, 0.28);
  --muted: #c9b77c;
  --navy: #100618;
  --panel: #21102f;
}

.masthead {
  border-bottom: 1px solid var(--rule);
  padding: 18px 0 16px;
  background: rgba(22, 8, 33, 0.96);
}

.brand {
  font-family: 'Inter Tight', sans-serif;
  letter-spacing: 0;
}

nav.subnav {
  border-bottom: 0;
  background: var(--navy);
}

nav.subnav a {
  color: rgba(243, 217, 139, 0.9);
}

nav.subnav a:hover {
  color: var(--accent-2);
  border-color: var(--accent-2);
}

.article h1,
.article h2,
.article h3,
.index-hero h1,
.index-hero p,
.faq-item summary,
.related a,
.article-card h2 {
  font-family: 'Inter Tight', sans-serif;
  letter-spacing: 0;
}

.article .deck {
  font-family: 'Inter Tight', sans-serif;
}

.formula {
  background: var(--navy);
  color: var(--ink);
}

.math-list,
.callout,
.ad-placeholder {
  background: var(--panel);
  border: 1px solid var(--rule);
}

.math-list {
  border-left: 3px solid var(--accent);
}

.math-list li::before,
.related li::before {
  content: '>';
}

.faq-item[open] summary::after {
  content: '-';
}

.cta {
  background: var(--accent);
  color: var(--paper) !important;
}

.cta:hover {
  background: var(--accent-2);
}

table.compare th {
  background: var(--navy);
  color: var(--ink);
}

table.compare tr:nth-child(even) {
  background: var(--paper-deep);
}

footer {
  background: var(--navy);
}

.index-hero {
  background: var(--panel);
  border-bottom: 1px solid var(--rule);
}

.article-card {
  border-radius: 8px;
  border: 1px solid var(--rule) !important;
  border-width: 1px !important;
  background: var(--panel);
  box-shadow: 0 14px 34px rgba(7, 2, 12, 0.28);
}

.article-card .card-kicker {
  color: var(--accent) !important;
}

section > div[style*="border-top"] {
  border-top: 1px solid var(--rule) !important;
  border-bottom: 1px solid var(--rule) !important;
}

.article-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 38px rgba(7, 2, 12, 0.34);
  border-color: var(--accent);
}