:root {
  --ink: #0F1114;
  --ink-2: #3D4047;
  --muted: #55585F;
  --rule: #DADAD6;
  --soft: #F4F4F2;
  --paper: #FFFFFF;
  --accent: #C2410C;
  --band: #0F1114;
  --on-accent: #FFFFFF;
  --head-muted: #A3A6AD;
  --head-rule: #2A2D33;
  --up: #7BD389;
  --down: #F2A08A;
  --display: "Archivo", "Helvetica Neue", sans-serif;
  --serif: "Source Serif 4 Variable", "Source Serif Pro", Georgia, "Times New Roman", serif;
  --text: "Source Sans 3 Variable", "Source Sans Pro", -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--text); font-size: 17px; line-height: 1.5; font-kerning: normal; text-rendering: optimizeLegibility; }
h1, h2, h3, .topic-title, .archive-list a { text-wrap: balance; }
p { text-wrap: pretty; }
a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
h1, h2, h3 { margin: 0; }
p { margin: 0; }
sup { font-size: 0.7em; }

.wrap { max-width: 1280px; margin: 0 auto; padding: 0 32px; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.nums { font-variant-numeric: tabular-nums; }
.ink { color: var(--ink); }
.accent { color: var(--accent); }

/* Header */
.site-header { background: var(--band); color: #FFFFFF; }
.topbar { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 8px 24px; padding: 12px 0; border-bottom: 1px solid var(--head-rule); font-size: 14px; color: var(--head-muted); }
.topnav { display: flex; flex-wrap: wrap; gap: 6px 24px; color: #E6E7EA; font-size: 15px; }
.masthead { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-end; gap: 20px 32px; padding: 32px 0 26px; }
.brand { display: flex; flex-direction: column; gap: 8px; }
.wordmark { font-family: var(--display); font-weight: 800; font-size: 60px; line-height: 1; letter-spacing: 0.05em; color: #FFFFFF; }
.wordmark:hover { text-decoration: none; }
.tagline { font-family: var(--serif); font-style: italic; font-size: 17px; color: var(--head-muted); }
.search-form { display: flex; align-items: center; }
.search-form input { height: 44px; width: 280px; max-width: 62vw; padding: 0 14px; background: #1A1D22; border: 1px solid #3A3E45; border-right: none; color: #FFFFFF; font-family: var(--text); font-size: 15px; border-radius: 0; }
.search-form button { height: 44px; width: 48px; display: flex; align-items: center; justify-content: center; background: var(--accent); border: none; color: var(--on-accent); cursor: pointer; }
.ticker { display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px 28px; padding: 12px 0; border-top: 1px solid var(--head-rule); font-size: 15px; font-variant-numeric: tabular-nums; }
.ticker-label { color: #FFFFFF; font-weight: 600; }
.tick-name { color: var(--head-muted); }
.tick-change.up { color: var(--up); }
.tick-change.down { color: var(--down); }

/* Main */
.main { padding-bottom: 72px; }
.label { font-family: var(--serif); font-weight: 700; font-size: 22px; line-height: 1.2; margin-bottom: 20px; }
.label-sm { font-size: 15px; font-weight: 600; }
.section-label { padding-top: 10px; border-top: 2px solid var(--ink); font-family: var(--serif); font-weight: 700; font-size: 22px; line-height: 1.2; margin-bottom: 4px; }
.section-label-inline { font-family: var(--serif); font-weight: 700; font-size: 22px; line-height: 1.2; }
.section-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: 8px 24px; padding-top: 10px; border-top: 2px solid var(--ink); margin-bottom: 8px; }

.three-lines { padding: 32px 0; border-bottom: 1px solid var(--rule); }
.edition-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: 4px 24px; margin-bottom: 20px; }
.edition-head .label { margin-bottom: 0; }
.published { font-size: 14px; color: var(--muted); }
.paper-meta { display: flex; flex-wrap: wrap; gap: 4px 6px; align-items: baseline; }
.sources time { color: var(--muted); }
.three-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px 40px; }
.three-item { display: flex; gap: 14px; }
.num { font-family: var(--serif); font-size: 18px; line-height: 1.45; font-weight: 700; color: var(--accent); min-width: 0.7em; }
.three-item p { font-family: var(--serif); font-size: 18px; line-height: 1.45; }
.five-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; max-width: 900px; }
.five-list li { display: flex; gap: 14px; font-family: var(--serif); font-size: 18px; line-height: 1.5; }
.five-list .num { line-height: 1.5; }

.lead { display: flex; flex-wrap: wrap; gap: 32px 56px; padding: 44px 0; border-bottom: 1px solid var(--rule); }
.lead-main { flex: 999 1 620px; min-width: 0; display: flex; flex-direction: column; gap: 16px; }
.kicker { display: flex; flex-wrap: wrap; gap: 6px 14px; align-items: baseline; font-size: 15px; font-weight: 600; }
.kicker .muted { font-weight: 400; }
.lead-title { font-family: var(--serif); font-weight: 600; font-size: 52px; line-height: 1.05; letter-spacing: -0.015em; }
.dek { font-family: var(--serif); font-size: 21px; line-height: 1.45; color: var(--ink-2); }
.lead-body { font-family: var(--serif); font-size: 18px; line-height: 1.6; max-width: 68ch; }
.lead-aside { flex: 1 1 300px; min-width: 0; display: flex; flex-direction: column; gap: 18px; padding-top: 4px; }
.why-box { display: flex; flex-direction: column; gap: 8px; padding: 20px; background: var(--soft); }
.why-box p { font-family: var(--serif); font-size: 17px; line-height: 1.5; }
.status { align-self: flex-start; font-size: 14px; font-weight: 600; padding: 5px 10px; border: 1px solid var(--ink); }
.link-list { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 10px; font-size: 15px; }
.link-list a { text-decoration: underline; }

.columns { display: flex; flex-wrap: wrap; gap: 48px 56px; padding: 44px 0; border-bottom: 1px solid var(--rule); }
.columns-last { border-bottom: none; }
.col-main { flex: 999 1 620px; min-width: 0; display: flex; flex-direction: column; }
.col-rail { flex: 1 1 320px; min-width: 0; display: flex; flex-direction: column; gap: 40px; }

.story { display: flex; flex-direction: column; gap: 6px; padding: 20px 0; border-bottom: 1px solid var(--rule); }
.story h3 { font-family: var(--serif); font-weight: 600; font-size: 22px; line-height: 1.2; letter-spacing: -0.005em; }
.story p { font-family: var(--serif); font-size: 16px; line-height: 1.5; color: var(--ink-2); }
.story-lg { gap: 8px; padding: 22px 0; }
.story-lg h3 { font-size: 32px; line-height: 1.12; letter-spacing: -0.01em; }
.story-lg p { font-size: 18px; line-height: 1.5; }
.story-sm { padding: 16px 0; }
.story-sm h3 { font-size: 19px; line-height: 1.25; }
.story-sm p { font-size: 15px; }
.story-long p { font-size: 17px; line-height: 1.6; max-width: 68ch; }
.story-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 0 40px; }
.col-rail section .story:last-child, .story-grid .story { border-bottom: 1px solid var(--rule); }
.sources { font-size: 14px; color: var(--muted); font-variant-numeric: tabular-nums; }
.sources a { text-decoration: underline; }

.papers { padding: 44px 0; border-bottom: 1px solid var(--rule); }
.paper-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 0 40px; }
.paper { display: flex; flex-direction: column; gap: 8px; padding: 22px 0; border-bottom: 1px solid var(--rule); }
.paper h3 { font-family: var(--serif); font-weight: 600; font-size: 21px; line-height: 1.22; }
.paper p { font-family: var(--serif); font-size: 16px; line-height: 1.5; color: var(--ink-2); }
.paper a { text-decoration: underline; }
.tag { font-size: 15px; font-weight: 600; color: var(--accent); }

.voice { display: flex; flex-direction: column; gap: 8px; padding: 20px 0; }
.voice-name { font-weight: 700; font-size: 17px; }
.voice p { font-family: var(--serif); font-size: 16px; line-height: 1.55; color: var(--ink-2); }
.voice a { text-decoration: underline; }

.edition-link { padding: 8px 0 32px; font-size: 15px; color: var(--muted); }
.edition-link a { text-decoration: underline; }

.weekly-teaser { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 20px 40px; padding: 32px 36px; background: var(--band); color: #FFFFFF; }
.weekly-teaser-text { flex: 999 1 480px; min-width: 0; display: flex; flex-direction: column; gap: 8px; }
.weekly-teaser .label-sm { color: var(--head-muted); }
.weekly-teaser h2 { font-family: var(--serif); font-weight: 600; font-size: 32px; line-height: 1.15; }
.weekly-teaser p { font-family: var(--serif); font-size: 18px; line-height: 1.5; color: #D4D6DA; }
.button { display: inline-flex; align-items: center; min-height: 44px; padding: 0 22px; background: var(--accent); color: var(--on-accent); font-weight: 600; font-size: 16px; border: none; cursor: pointer; font-family: var(--text); }
.button:hover { text-decoration: none; filter: brightness(1.08); }
.button-quiet { background: transparent; border: 1px solid #3A3E45; color: #D4D6DA; cursor: default; }

/* Weekly */
.weekly-head, .page-head { display: flex; flex-direction: column; gap: 10px; padding: 44px 0 28px; border-bottom: 1px solid var(--rule); }
.weekly-section { padding: 40px 0; border-bottom: 1px solid var(--rule); }
.read-meta { margin: 6px 0 4px; display: grid; gap: 6px; font-size: 15px; }
.read-meta div { display: flex; flex-wrap: wrap; gap: 4px 12px; }
.read-meta dt { font-weight: 600; min-width: 120px; }
.read-meta dd { margin: 0; color: var(--ink-2); }
.watch-list { list-style: none; margin: 16px 0 0; padding: 0; display: grid; gap: 12px; }
.watch-list li { display: flex; flex-wrap: wrap; gap: 4px 20px; font-size: 17px; }
.watch-list .nums { min-width: 120px; font-weight: 600; color: var(--accent); }

/* Archive and search */
.archive-month { padding: 32px 0 8px; }
.archive-list { list-style: none; margin: 0; padding: 0; }
.archive-list li { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 16px; padding: 14px 0; border-bottom: 1px solid var(--rule); font-size: 17px; }
.archive-list a { font-family: var(--serif); font-weight: 600; font-size: 20px; }
.search-page-form { display: flex; flex-wrap: wrap; gap: 12px; padding: 28px 0 12px; }
.search-page-form input { flex: 1 1 280px; height: 44px; padding: 0 14px; border: 1px solid var(--ink); background: var(--paper); color: var(--ink); font-family: var(--text); font-size: 16px; border-radius: 0; }

.prev-next { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; padding: 32px 0 0; }
.prev-next a { display: flex; flex-direction: column; gap: 4px; font-family: var(--serif); font-weight: 600; font-size: 19px; }
.prev-next .next { text-align: right; margin-left: auto; }

/* Footer */
.site-footer { border-top: 1px solid var(--rule); }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 24px 48px; padding-top: 36px; padding-bottom: 48px; }
.footer-about { flex: 1 1 420px; min-width: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-about p { font-size: 15px; line-height: 1.55; color: var(--muted); }
.footer-mark { font-family: var(--display); font-weight: 800; font-size: 22px; letter-spacing: 0.05em; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 10px 28px; align-content: flex-start; font-size: 15px; }

@media (max-width: 640px) {
  .wrap { padding: 0 16px; }
  .wordmark { font-size: 44px; }
  .lead-title { font-size: 36px; }
  .dek { font-size: 19px; }
  .story-lg h3 { font-size: 26px; }
  .story-body p { font-size: 18px; }
  .weekly-teaser { padding: 24px 20px; }
}

/* Story pages */
.lead-title a, .story h3 a, .paper h3 a { text-decoration: none; }
.lead-title a:hover, .story h3 a:hover, .paper h3 a:hover { text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 4px; }
.read-more { align-self: flex-start; font-weight: 600; font-size: 16px; color: var(--accent); }
.story-page { display: flex; flex-wrap: wrap; gap: 32px 56px; padding: 44px 0; border-bottom: 1px solid var(--rule); }
.story-page-main { flex: 999 1 620px; min-width: 0; display: flex; flex-direction: column; gap: 16px; }
.story-page-main .dek, .story-page-main .lead-title { max-width: 30ch; }
.story-page-main .dek { max-width: 62ch; }
.story-page-aside { flex: 1 1 300px; min-width: 0; display: flex; flex-direction: column; gap: 18px; align-items: flex-start; }
.story-page-aside .button { justify-content: center; }
.story-dates a { text-decoration: underline; }
.story-body { display: flex; flex-direction: column; gap: 18px; padding-top: 8px; border-top: 1px solid var(--rule); margin-top: 4px; }
.story-body p { font-family: var(--serif); font-size: 20px; line-height: 1.6; padding-top: 0; max-width: 66ch; }
.story-body p:first-child { padding-top: 14px; }
.source-list { display: flex; flex-direction: column; gap: 10px; }

/* Dark mode follows the reader's system setting */
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #E8E9EC;
    --ink-2: #B9BCC3;
    --muted: #9A9EA6;
    --rule: #2A2D33;
    --soft: #1A1D22;
    --paper: #0E1013;
    --accent: #F07A3F;
    --band: #07080A;
    --on-accent: #111214;
    --head-rule: #23262C;
  }
  .site-header { border-bottom: 1px solid var(--rule); }
  .weekly-teaser { border: 1px solid var(--rule); }
  .search-form input { background: #15181C; }
  img, svg { color-scheme: dark; }
}

/* Headlines already read turn grey (visited links) */
.lead-title a:visited, .story h3 a:visited, .paper h3 a:visited, .archive-list a:visited { color: var(--muted); }

/* Sparklines in the markets band */
.tick { display: inline-flex; align-items: baseline; gap: 6px; }
.spark { align-self: center; color: var(--head-muted); overflow: visible; }
.spark-end.up { fill: var(--up); }
.spark-end.down { fill: var(--down); }

/* Topics */
.topic-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.topic-chips a { font-size: 14px; padding: 4px 10px; border: 1px solid var(--rule); color: var(--ink-2); }
.topic-chips a:hover { border-color: var(--ink); text-decoration: none; }
.topic-list { list-style: none; margin: 0; padding: 0; max-width: 860px; }
.topic-list li { display: flex; flex-direction: column; gap: 6px; padding: 20px 0; border-bottom: 1px solid var(--rule); }
.topic-meta { display: flex; gap: 12px; align-items: baseline; }
.topic-title { font-family: var(--serif); font-weight: 600; font-size: 22px; line-height: 1.22; }
.topic-title:visited { color: var(--muted); }
.topic-list p { font-family: var(--serif); font-size: 16px; line-height: 1.5; color: var(--ink-2); max-width: 70ch; }
.topic-empty { padding: 32px 0; }
.topics-index { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 0 40px; }
.topics-index li { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 10px; padding: 18px 0; border-bottom: 1px solid var(--rule); }
.topics-index a { font-family: var(--serif); font-weight: 600; font-size: 20px; }
.topics-index p { flex-basis: 100%; }

/* Formulas sit at the size of the surrounding serif text */
.katex { font-size: 1.06em; }