/* Driftline Field Notes — article reading layer. Tokens come from styles.css (never restated). */

/* ---------- index hub ---------- */
.fn-hub { padding: clamp(48px, 8vw, 96px) 0 clamp(56px, 9vw, 110px); }
.fn-hub-head { max-width: 46rem; margin-bottom: clamp(36px, 5vw, 60px); }
.fn-hub-head .lede { color: var(--text-muted); margin-top: 20px; }
.fn-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: clamp(20px, 2.4vw, 30px); }
.fn-card {
  display: flex; flex-direction: column;
  border: 1px solid var(--hairline); border-radius: var(--radius);
  padding: 26px 26px 22px; background: var(--paper);
  text-decoration: none; color: var(--ink);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.fn-card:hover { transform: translateY(-3px); box-shadow: 0 14px 30px rgba(22,35,43,.10); border-color: var(--line); }
.fn-card .fn-kicker { font: 400 12px/1.4 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--text-muted); }
.fn-card h3 { font: 500 22px/1.14 var(--font-display); font-variation-settings: var(--frx); letter-spacing: -.01em; margin: 12px 0 10px; }
.fn-card p { color: var(--text-muted); font-size: 15px; line-height: 1.55; }
.fn-card .fn-more { margin-top: auto; padding-top: 16px; font: 600 14px/1 var(--font-body); color: var(--line); }

/* ---------- article shell ---------- */
.fn-article { padding: clamp(28px, 5vw, 52px) 0 clamp(48px, 8vw, 90px); }
.fn-wrap { max-width: 46rem; margin: 0 auto; }
.crumbs { font: 400 13px/1.5 var(--font-mono); letter-spacing: .02em; color: var(--text-muted); display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 26px; }
.crumbs a { color: var(--text-muted); text-decoration: none; }
.crumbs a:hover { color: var(--line); }
.crumbs span[aria-hidden] { opacity: .5; }

.fn-nugget {
  border-left: var(--rule-w) solid var(--line);
  background: var(--brass-wash);
  padding: 16px 20px; border-radius: 0 var(--radius) var(--radius) 0;
  font: 500 16px/1.5 var(--font-body); color: var(--ink);
  margin-bottom: 26px;
}
.fn-nugget b { font-family: var(--font-mono); font-weight: 400; font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--text-muted); display: block; margin-bottom: 6px; }

.fn-h1 { font-size: clamp(34px, 5vw, 56px); line-height: 1.05; letter-spacing: -.015em; margin-bottom: 18px; }
.fn-byline { display: flex; flex-wrap: wrap; gap: 8px 18px; font: 400 13px/1.5 var(--font-mono); color: var(--text-muted); border-bottom: 1px solid var(--hairline); padding-bottom: 22px; margin-bottom: 30px; }
.fn-byline .fn-updated { color: var(--ember-text); }

/* ---------- prose ---------- */
.fn-body { font: 400 18px/1.68 var(--font-body); color: var(--ink); }
.fn-body > * + * { margin-top: 22px; }
.fn-body h2 { font: 500 clamp(26px, 3.2vw, 34px)/1.14 var(--font-display); font-variation-settings: var(--frx); letter-spacing: -.012em; margin-top: 52px; }
.fn-body h3 { font: 600 20px/1.3 var(--font-body); margin-top: 34px; }
.fn-body p { max-width: none; }
.fn-body a { color: var(--ink); text-decoration: underline; text-decoration-color: var(--line); text-underline-offset: 3px; text-decoration-thickness: 2px; }
.fn-body a:hover { color: var(--line); }
.fn-body strong { font-weight: 600; }
.fn-body ul, .fn-body ol { margin: 22px 0; padding-left: 24px; }
.fn-body li { margin-bottom: 10px; }
.fn-body li::marker { color: var(--line); }

/* answer-first callout under an H2 */
.fn-answer { background: var(--fog); border-radius: var(--radius); padding: 18px 22px; font-weight: 500; }

/* arithmetic / math-shown blocks (firewall: figures are always shown as math) */
.fn-math { font: 400 15px/1.7 var(--font-mono); white-space: pre; background: var(--ink); color: var(--fog); padding: 20px 24px; border-radius: var(--radius); overflow-x: auto; }
.fn-math .fn-total { color: var(--ember-text-rev); }
/* phones: smaller mono + a right-edge fade so the sideways scroll is discoverable, not a silent clip */
@media (max-width: 480px) {
  .fn-mathwrap { position: relative; }
  .fn-mathwrap::after { content: ""; position: absolute; top: 0; right: 0; bottom: 0; width: 34px; border-radius: 0 var(--radius) var(--radius) 0; background: linear-gradient(to left, rgba(22,35,43,.92), rgba(22,35,43,0)); pointer-events: none; }
  .fn-mathwrap::before { content: "slide \2192"; position: absolute; right: 10px; bottom: 6px; z-index: 1; font: 400 10px/1 var(--font-mono); letter-spacing: .06em; color: var(--ember-text-rev); pointer-events: none; }
  .fn-math { font-size: 12px; padding: 16px 14px; }
}

/* data table */
.fn-tablewrap { overflow-x: auto; border: 1px solid var(--hairline); border-radius: var(--radius); margin: 26px 0; }
.fn-table { width: 100%; border-collapse: collapse; font-size: 15px; min-width: 460px; }
.fn-table caption { text-align: left; font: 400 12px/1.4 var(--font-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--text-muted); padding: 14px 18px 0; caption-side: top; }
.fn-table th, .fn-table td { text-align: left; padding: 12px 18px; border-bottom: 1px solid var(--hairline); vertical-align: top; }
.fn-table thead th { font: 400 12px/1.4 var(--font-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--text-muted); }
.fn-table tbody tr:last-child td { border-bottom: none; }
.fn-table td:first-child { font-weight: 500; }

/* not-for-you honest block */
.fn-notfor { border: 1px solid var(--hairline); border-radius: var(--radius); padding: 24px 26px; background: var(--paper); }
.fn-notfor h2 { margin-top: 0 !important; }

/* prove-it strip */
.fn-proof { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); margin: 28px 0; }
.fn-proof .pf { border-left: var(--rule-w) solid var(--reed); padding: 4px 0 4px 16px; }
.fn-proof .pf b { display: block; font: 400 24px/1.1 var(--font-mono); }
.fn-proof .pf span { font-size: 14px; color: var(--text-muted); }

/* FAQ */
.fn-faq { margin-top: 56px; }
.fn-faq h2 { font: 500 clamp(26px, 3.2vw, 34px)/1.14 var(--font-display); font-variation-settings: var(--frx); letter-spacing: -.012em; }
.fn-faq details { border-bottom: 1px solid var(--hairline); padding: 18px 0; }
.fn-faq summary { font: 600 18px/1.4 var(--font-body); cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.fn-faq summary::-webkit-details-marker { display: none; }
.fn-faq summary::after { content: "+"; color: var(--line); font-family: var(--font-mono); font-size: 22px; line-height: 1; }
.fn-faq details[open] summary::after { content: "–"; }
.fn-faq details p { margin-top: 12px; color: var(--text-muted); line-height: 1.6; }

/* sources / references */
.fn-sources { margin-top: 48px; border-top: 1px solid var(--hairline); padding-top: 24px; }
.fn-sources h2 { font: 400 13px/1.4 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 14px; }
.fn-sources ol { padding-left: 20px; font-size: 15px; color: var(--text-muted); }
.fn-sources li { margin-bottom: 8px; }
.fn-sources a { color: var(--text-muted); text-decoration: underline; text-decoration-color: var(--hairline); }
.fn-sources a:hover { color: var(--line); }

/* related field notes */
.fn-related { margin-top: 48px; }
.fn-related h2 { font: 400 13px/1.4 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 16px; }
.fn-related ul { list-style: none; padding: 0; display: grid; gap: 10px; }
.fn-related a { text-decoration: none; color: var(--ink); font-weight: 500; border-bottom: 1px solid var(--hairline); padding-bottom: 10px; display: inline-flex; }
.fn-related a:hover { color: var(--line); }

/* end CTA band */
.fn-cta { margin-top: 60px; }
.fn-cta-inner { background: var(--ink); color: var(--fog); border-radius: var(--radius); padding: clamp(30px, 5vw, 48px); box-shadow: inset 0 calc(-1 * var(--rule-w)) 0 0 var(--line); }
.fn-cta-inner h2 { font: 500 clamp(24px, 3vw, 32px)/1.14 var(--font-display); font-variation-settings: var(--frx); color: var(--fog); }
.fn-cta-inner p { color: var(--text-muted-rev); margin: 14px 0 24px; max-width: 42ch; }
.fn-cta-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.fn-cta-inner .btn-primary { background: var(--fog); color: var(--ink); }
.fn-cta-inner .btn-ghost { color: var(--fog); border-color: var(--fog); }

@media (max-width: 640px) {
  .fn-body { font-size: 17px; }
  .fn-byline { font-size: 12px; }
}


/* ==================================================================
   WORLD-CLASS BLOG COMPONENTS (ported from qa/blog-anatomy/blog.css 2026-07-05).
   Tokens come from styles.css; never restated. Design-only .anno-* NOT ported.
   ================================================================== */
/* Driftline Field Notes — world-class reading layer (NEW components).
   Tokens come from styles.css (never restated). Reuses .fn-* from field-notes.css.
   Register: warm fog ground, ONE ember accent, editorial restraint. */

/* ============ reading progress bar ============ */
.rp-bar { position: fixed; top: 0; left: 0; height: 2px; width: 0; z-index: 60;
  background: var(--line); transition: width .1s linear; }
@media (prefers-reduced-motion: reduce) { .rp-bar { transition: none; } }

/* ============ 3-column reading shell (TOC · article · share) ============ */
.blog-shell { display: grid; gap: clamp(24px, 3.4vw, 56px);
  grid-template-columns: minmax(0, 15rem) minmax(0, 46rem) minmax(0, 8rem);
  justify-content: center; align-items: start;
  padding: clamp(28px, 5vw, 52px) 0 clamp(48px, 8vw, 90px); }
.blog-shell .fn-wrap { max-width: none; margin: 0; }

/* ---- left rail: sticky TOC ---- */
.toc { position: sticky; top: calc(var(--nav-h) + 24px); align-self: start; }
.toc-k { font: 400 12px/1.4 var(--font-mono); letter-spacing: .08em; text-transform: uppercase;
  color: var(--text-muted); margin-bottom: 14px; padding-bottom: 12px; border-bottom: 1px solid var(--hairline);
  list-style: none; cursor: default; }
.toc-k::-webkit-details-marker { display: none; }
.toc-k::marker { content: ""; }
.toc ol { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; }
.toc a { display: block; padding: 7px 0 7px 14px; border-left: 2px solid var(--hairline);
  font: 400 14px/1.35 var(--font-body); color: var(--text-muted); text-decoration: none;
  transition: color .2s, border-color .2s; }
.toc a:hover { color: var(--ink); }
.toc a.is-active { color: var(--ink); font-weight: 600; border-left-color: var(--line); }
.toc-read { margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--hairline);
  font: 400 12px/1.5 var(--font-mono); color: var(--text-muted); }

/* ---- right rail: share ---- */
.sharerail { position: sticky; top: calc(var(--nav-h) + 24px); display: flex; flex-direction: column; gap: 10px; }
.sharerail .sr-k { font: 400 11px/1.4 var(--font-mono); letter-spacing: .08em; text-transform: uppercase;
  color: var(--text-muted); margin-bottom: 4px; }
.sharerail a, .sharerail button { width: 38px; height: 38px; display: grid; place-items: center;
  border: 1px solid var(--hairline); border-radius: 50%; background: var(--paper); color: var(--text-muted);
  cursor: pointer; transition: color .2s, border-color .2s, transform .2s; }
.sharerail a:hover, .sharerail button:hover { color: var(--ink); border-color: var(--line); transform: translateY(-2px); }
.sharerail svg { width: 17px; height: 17px; }

/* ============ hero image ============ */
.fn-hero { margin: 0 0 30px; }
.fn-hero img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover;
  border-radius: var(--radius-img); display: block; }
.fn-hero figcaption { font: 400 13px/1.5 var(--font-mono); color: var(--text-muted); margin-top: 10px; }

/* byline avatar */
.fn-byline--rich { align-items: center; }
.by-who { display: flex; align-items: center; gap: 11px; }
.by-ava { width: 38px; height: 38px; border-radius: 50%; object-fit: cover; flex: none;
  border: 1px solid var(--hairline); }
.by-name { font: 500 14px/1.2 var(--font-body); color: var(--ink); font-family: var(--font-body); }
.by-role { font: 400 12px/1.3 var(--font-mono); color: var(--text-muted); }

/* ============ key takeaways ============ */
.kt { border: 1px solid var(--hairline); border-radius: var(--radius); padding: 22px 26px;
  background: var(--paper); margin: 30px 0; }
.kt-k { font: 400 12px/1.4 var(--font-mono); letter-spacing: .08em; text-transform: uppercase;
  color: var(--text-muted); margin-bottom: 12px; }
.kt ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.kt li { position: relative; padding-left: 22px; font: 400 16px/1.5 var(--font-body); color: var(--ink); }
.kt li::before { content: ""; position: absolute; left: 0; top: 9px; width: 8px; height: 8px;
  border-radius: 50%; background: var(--line); }

/* ============ stat callout (number + cited source) ============ */
.statcall { display: grid; grid-template-columns: auto 1fr; gap: 18px 22px; align-items: baseline;
  border-left: var(--rule-w) solid var(--reed); padding: 6px 0 6px 20px; margin: 30px 0; }
.statcall .sc-n { font: 400 clamp(40px, 6vw, 58px)/.95 var(--font-mono); color: var(--ink); letter-spacing: -.02em; }
.statcall .sc-b { font: 500 17px/1.5 var(--font-body); color: var(--ink); }
.statcall .sc-src { grid-column: 2; font: 400 12px/1.4 var(--font-mono); color: var(--text-muted); }
.statcall .sc-src a { color: var(--text-muted); text-decoration: underline; text-decoration-color: var(--hairline); }

/* ============ custom bar chart (in-brand data-viz, ONE ember series) ============ */
.bchart { margin: 34px 0; border: 1px solid var(--hairline); border-radius: var(--radius); padding: 24px 26px 20px; background: var(--paper); }
.bchart-cap { display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap;
  font: 400 12px/1.4 var(--font-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--text-muted);
  padding-bottom: 18px; margin-bottom: 6px; border-bottom: 1px solid var(--hairline); }
.bchart-rows { display: grid; gap: 16px; margin-top: 18px; }
.bcrow { display: grid; grid-template-columns: 9rem 1fr auto; gap: 14px; align-items: center; }
.bcrow .bc-l { font: 400 13px/1.3 var(--font-body); color: var(--text-muted); }
.bcrow .bc-track { height: 22px; background: var(--fog); border-radius: 3px; overflow: hidden; }
.bcrow .bc-fill { display: block; height: 100%; width: var(--w, 0%); background: var(--line); border-radius: 3px;
  transform: scaleX(0); transform-origin: left; transition: transform .8s var(--reveal-ease); }
.bchart.is-in .bc-fill, .no-js .bc-fill { transform: scaleX(1); }
.bcrow.is-peak .bc-fill { background: var(--ink); }
.bcrow .bc-v { font: 400 14px/1 var(--font-mono); color: var(--ink); }
.bchart-note { font: 400 13px/1.5 var(--font-mono); color: var(--text-muted); margin-top: 18px; }
@media (prefers-reduced-motion: reduce) { .bcrow .bc-fill { transition: none; transform: scaleX(1); } }

/* ============ drop cap (editorial opener) ============ */
.fn-body > p.fn-lead::first-letter {
  float: left; font-family: var(--font-display); font-variation-settings: var(--frx);
  font-weight: 500; font-size: 3.9em; line-height: .78; padding: 6px 12px 0 0; color: var(--ink); }

/* ============ day-rate RANGE bars (min–max dumbbell) ============ */
.ratebars { margin: 34px 0; border: 1px solid var(--hairline); border-radius: var(--radius); padding: 24px 26px 20px; background: var(--paper); }
.ratebars .rb-cap { display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap;
  font: 400 12px/1.4 var(--font-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--text-muted);
  padding-bottom: 18px; margin-bottom: 6px; border-bottom: 1px solid var(--hairline); }
.ratebars .rb-rows { display: grid; gap: 15px; margin-top: 18px; }
.rb2 { display: grid; grid-template-columns: 9.5rem 1fr 6.5rem; gap: 14px; align-items: center; }
.rb2 .rb-l { font: 400 13px/1.3 var(--font-body); color: var(--text-muted); }
.rb2 .rb-track { position: relative; height: 10px; background: var(--fog); border-radius: 999px; }
.rb2 .rb-span { position: absolute; top: 0; height: 100%; left: var(--l, 0%); width: var(--w, 10%);
  background: var(--line); border-radius: 999px; }
.rb2 .rb-v { font: 400 13px/1 var(--font-mono); color: var(--ink); text-align: right; }
.ratebars .rb-scale { display: flex; justify-content: space-between; font: 400 11px/1.4 var(--font-mono);
  color: var(--text-muted); margin: 14px 0 0; padding-left: calc(9.5rem + 14px); padding-right: calc(6.5rem + 14px); }
.ratebars .rb-note { font: 400 13px/1.5 var(--font-mono); color: var(--text-muted); margin-top: 14px; }

/* ============ season strip (12-month fishability) ============ */
.season { margin: 34px 0; border: 1px solid var(--hairline); border-radius: var(--radius); padding: 24px 26px 20px; background: var(--paper); overflow-x: auto; }
.season .se-cap { font: 400 12px/1.4 var(--font-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--text-muted);
  padding-bottom: 18px; margin-bottom: 6px; border-bottom: 1px solid var(--hairline); }
.season-grid { display: grid; grid-template-columns: 8.5rem repeat(12, 1fr); gap: 5px; margin-top: 16px; min-width: 520px; }
.season-grid .se-h { font: 400 11px/1 var(--font-mono); color: var(--text-muted); text-align: center; padding-bottom: 4px; }
.season-grid .se-rl { font: 400 13px/1.2 var(--font-body); color: var(--ink); display: flex; align-items: center; }
.season-grid .se-c { height: 26px; border-radius: 3px; background: var(--fog); }
.season-grid .se-c.lvl1 { background: rgba(46,74,86,.22); }   /* fair — river tint */
.season-grid .se-c.lvl2 { background: rgba(46,74,86,.5); }    /* good */
.season-grid .se-c.lvl3 { background: var(--ink); }           /* prime */
.season-legend { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 16px; font: 400 12px/1.4 var(--font-mono); color: var(--text-muted); }
.season-legend span { display: inline-flex; align-items: center; gap: 7px; }
.season-legend i { width: 13px; height: 13px; border-radius: 3px; display: inline-block; }
.season-legend .l0 { background: var(--fog); border: 1px solid var(--hairline); }
.season-legend .l1 { background: rgba(46,74,86,.22); }
.season-legend .l2 { background: rgba(46,74,86,.5); }
.season-legend .l3 { background: var(--ink); }

/* ============ fisheries map (hand-built SVG diagram) ============ */
.fmap { margin: 34px 0; border: 1px solid var(--hairline); border-radius: var(--radius); padding: 24px 26px 22px; background: var(--paper); }
.fmap .fm-cap { font: 400 12px/1.4 var(--font-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--text-muted);
  padding-bottom: 18px; margin-bottom: 18px; border-bottom: 1px solid var(--hairline); }
.fmap-grid { display: grid; grid-template-columns: minmax(0, 300px) 1fr; gap: clamp(20px, 3vw, 40px); align-items: center; }
.fmap svg { width: 100%; height: auto; display: block; }
.fmap .ga-shape { fill: var(--fog); stroke: var(--hairline); stroke-width: 1.5; }
.fmap .ga-pin { fill: var(--line); }
.fmap .ga-pin-n { fill: var(--paper); font: 600 11px/1 var(--font-mono); text-anchor: middle; }
.fmap-legend { display: grid; gap: 14px; }
.fmap-legend li { list-style: none; display: grid; grid-template-columns: 26px 1fr; gap: 12px; align-items: start; }
.fmap-legend .fl-n { width: 24px; height: 24px; border-radius: 50%; background: var(--line); color: var(--paper);
  font: 600 12px/24px var(--font-mono); text-align: center; }
.fmap-legend .fl-t { font: 500 15px/1.3 var(--font-body); color: var(--ink); }
.fmap-legend .fl-d { font: 400 13px/1.45 var(--font-body); color: var(--text-muted); display: block; margin-top: 2px; }
.fmap-legend .fl-r { font-family: var(--font-mono); color: var(--ink); }

/* ============ related as CARDS ============ */
.fn-relgrid { margin-top: 48px; }
.fn-relgrid > h2 { font: 400 13px/1.4 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 18px; }
.fn-relgrid .rg { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 16px; }
.fn-relgrid .rgc { border: 1px solid var(--hairline); border-radius: var(--radius); padding: 20px; background: var(--paper);
  text-decoration: none; color: var(--ink); display: flex; flex-direction: column; transition: transform .25s, box-shadow .25s, border-color .25s; }
.fn-relgrid .rgc:hover { transform: translateY(-3px); box-shadow: 0 14px 30px rgba(22,35,43,.10); border-color: var(--line); }
.fn-relgrid .rgc .rk { font: 400 11px/1.4 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--text-muted); }
.fn-relgrid .rgc h3 { font: 500 18px/1.2 var(--font-display); font-variation-settings: var(--frx); margin: 10px 0 0; }
.fn-relgrid .rgc .rm { margin-top: auto; padding-top: 14px; font: 400 12px/1.4 var(--font-mono); color: var(--text-muted); }

/* richer author card: social links */
.authorcard .ac-links { display: flex; gap: 14px; margin-top: 10px; font: 400 13px/1 var(--font-mono); }
.authorcard .ac-links a { color: var(--text-muted); text-decoration: underline; text-decoration-color: var(--hairline); }
.authorcard .ac-links a:hover { color: var(--line); }

@media (max-width: 900px) {
  .fmap-grid { grid-template-columns: 1fr; }
  .fmap svg { max-width: 300px; margin: 0 auto; }
}
@media (max-width: 640px) {
  .rb2 { grid-template-columns: 7rem 1fr 5.5rem; gap: 9px; }
  .ratebars .rb-scale { padding-left: calc(7rem + 9px); padding-right: calc(5.5rem + 9px); }
  .fn-body > p.fn-lead::first-letter { font-size: 3.2em; }
}

/* ============ pull quote ============ */
.pullq { margin: 40px 0; padding: 6px 0 6px 26px; border-left: var(--rule-w) solid var(--line); }
.pullq p { font: 500 clamp(22px, 2.8vw, 28px)/1.3 var(--font-display); font-variation-settings: var(--frx);
  font-style: italic; letter-spacing: -.01em; color: var(--ink); max-width: 30ch; }
.pullq cite { display: block; margin-top: 12px; font: 400 13px/1.4 var(--font-mono); font-style: normal;
  color: var(--text-muted); }

/* ============ callout / aside ============ */
.callout { margin: 30px 0; padding: 20px 24px; border-radius: var(--radius); background: var(--paper);
  border: 1px solid var(--hairline); border-left: var(--rule-w) solid var(--reed); }
.callout.is-insight { border-left-color: var(--line); background: var(--brass-wash); border-color: transparent; }
.callout .co-k { font: 400 12px/1.4 var(--font-mono); letter-spacing: .08em; text-transform: uppercase;
  color: var(--text-muted); margin-bottom: 8px; }
.callout p { font: 400 16px/1.6 var(--font-body); color: var(--ink); margin: 0; }

/* ============ inline figure ============ */
.fn-fig { margin: 30px 0; }
.fn-fig img { width: 100%; height: auto; border-radius: var(--radius-img); display: block; }
.fn-fig figcaption { font: 400 13px/1.5 var(--font-mono); color: var(--text-muted); margin-top: 10px; }

/* ============ inline mid-article CTA (restrained) ============ */
.fn-inlinecta { margin: 36px 0; padding: 20px 0; border-top: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline);
  display: flex; gap: 16px; align-items: center; justify-content: space-between; flex-wrap: wrap; }
.fn-inlinecta p { font: 500 17px/1.4 var(--font-body); color: var(--ink); margin: 0; max-width: 42ch; }

/* ============ hover footnotes ============ */
.fnref { font-size: .7em; vertical-align: super; line-height: 0; margin-left: 1px;
  color: var(--line); font-family: var(--font-mono); cursor: pointer; text-decoration: none; font-weight: 600; }
.fnref:hover { text-decoration: underline; }
.fn-note-pop { position: relative; }

/* ============ author bio card ============ */
.authorcard { display: flex; gap: 18px; align-items: flex-start; margin-top: 48px;
  border-top: 1px solid var(--hairline); padding-top: 30px; }
.authorcard img { width: 62px; height: 62px; border-radius: 50%; object-fit: cover; flex: none; border: 1px solid var(--hairline); }
.authorcard .ac-k { font: 400 12px/1.4 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 6px; }
.authorcard h3 { font: 500 20px/1.2 var(--font-display); font-variation-settings: var(--frx); margin: 0 0 8px; }
.authorcard p { font: 400 15px/1.6 var(--font-body); color: var(--text-muted); margin: 0; max-width: 52ch; }
.authorcard a { color: var(--ink); }

/* ============ next / prev ============ */
.nextprev { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 42px; }
.nextprev a { border: 1px solid var(--hairline); border-radius: var(--radius); padding: 18px 20px;
  text-decoration: none; color: var(--ink); transition: border-color .2s, transform .2s; }
.nextprev a:hover { border-color: var(--line); transform: translateY(-2px); }
.nextprev .np-k { font: 400 12px/1.4 var(--font-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--text-muted); }
.nextprev .np-t { display: block; margin-top: 6px; font: 500 17px/1.25 var(--font-display); font-variation-settings: var(--frx); }
.nextprev .np-next { text-align: right; }

/* ============ INDEX / HUB additions ============ */
/* category chips */
.fn-chips { display: flex; flex-wrap: wrap; gap: 10px; margin: 0 0 clamp(30px,4vw,44px); }
.fn-chip { font: 400 13px/1 var(--font-mono); letter-spacing: .02em; padding: 9px 16px; border-radius: var(--radius-pill);
  border: 1px solid var(--hairline); background: var(--paper); color: var(--text-muted); text-decoration: none;
  cursor: pointer; transition: color .2s, border-color .2s, background .2s; }
.fn-chip:hover { color: var(--ink); border-color: var(--line); }
.fn-chip.is-on { background: var(--ink); color: var(--fog); border-color: var(--ink); }

/* featured hero card */
.fn-feat { display: grid; grid-template-columns: 1.1fr 1fr; gap: clamp(20px, 3vw, 44px); align-items: center;
  border: 1px solid var(--hairline); border-radius: var(--radius); overflow: hidden; background: var(--paper);
  margin-bottom: clamp(36px, 5vw, 56px); text-decoration: none; color: var(--ink);
  transition: box-shadow .25s, border-color .25s; }
.fn-feat:hover { box-shadow: 0 18px 40px rgba(22,35,43,.12); border-color: var(--line); }
.fn-feat .ff-img { align-self: stretch; }
.fn-feat .ff-img img { width: 100%; height: 100%; min-height: 260px; object-fit: cover; display: block; }
.fn-feat .ff-body { padding: clamp(24px, 3vw, 40px) clamp(24px, 3vw, 40px) clamp(24px, 3vw, 40px) 0; }
.fn-feat .ff-k { font: 400 12px/1.4 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ember-text); }
.fn-feat h2 { font: 500 clamp(26px, 3vw, 38px)/1.1 var(--font-display); font-variation-settings: var(--frx);
  letter-spacing: -.012em; margin: 12px 0 12px; }
.fn-feat .ff-dek { font: 400 16px/1.55 var(--font-body); color: var(--text-muted); margin-bottom: 18px; }
.fn-feat .ff-by { display: flex; align-items: center; gap: 10px; font: 400 13px/1.3 var(--font-mono); color: var(--text-muted); }
.fn-feat .ff-by img { width: 30px; height: 30px; border-radius: 50%; object-fit: cover; }

/* section label for two-tier IA */
.fn-section-k { font: 400 13px/1.4 var(--font-mono); letter-spacing: .08em; text-transform: uppercase;
  color: var(--text-muted); border-bottom: 1px solid var(--hairline); padding-bottom: 12px; margin: clamp(40px,6vw,64px) 0 26px; }

/* card read-time + kicker row */
.fn-card .fn-meta { display: flex; gap: 12px; font: 400 12px/1.4 var(--font-mono); color: var(--text-muted); margin-top: auto; padding-top: 14px; }

/* newsletter module */
.fn-news { margin: clamp(48px,7vw,80px) 0 0; background: var(--ink); border-radius: var(--radius);
  padding: clamp(30px, 5vw, 52px); box-shadow: inset 0 calc(-1 * var(--rule-w)) 0 0 var(--line);
  display: grid; grid-template-columns: 1.2fr 1fr; gap: clamp(20px,4vw,48px); align-items: center; }
.fn-news h2 { font: 500 clamp(24px,3vw,32px)/1.15 var(--font-display); font-variation-settings: var(--frx); color: var(--fog); margin: 0; }
.fn-news p { font: 400 15px/1.6 var(--font-body); color: var(--text-muted-rev); margin: 12px 0 0; max-width: 44ch; }
.fn-news form { display: flex; gap: 10px; flex-wrap: wrap; }
.fn-news input { flex: 1; min-width: 200px; padding: 14px 16px; border-radius: var(--radius); border: 1px solid var(--hairline-rev);
  background: rgba(244,240,230,.06); color: var(--fog); font: 400 15px/1 var(--font-body); }
.fn-news input::placeholder { color: var(--text-muted-rev); }
.fn-news .btn-primary { background: var(--fog); color: var(--ink); }

/* ============ responsive ============ */
@media (max-width: 1080px) {
  .blog-shell { grid-template-columns: minmax(0, 46rem); justify-content: center; padding-inline: 0; }
  .toc { position: static; top: auto; margin-bottom: 30px; }
  .toc-wrap { border: 1px solid var(--hairline); border-radius: var(--radius); padding: 18px 20px; }
  .toc-k { cursor: pointer; margin-bottom: 0; padding-bottom: 0; border-bottom: none; display: flex; justify-content: space-between; align-items: center; }
  .toc-wrap[open] .toc-k { margin-bottom: 14px; padding-bottom: 12px; border-bottom: 1px solid var(--hairline); }
  .toc-wrap[open] .toc-k::after { content: "▲"; font-size: 9px; }
  .toc-wrap:not([open]) .toc-k::after { content: "▼"; font-size: 9px; }
  .sharerail { position: static; flex-direction: row; align-items: center; margin-top: 30px;
    border-top: 1px solid var(--hairline); padding-top: 20px; }
  .sharerail .sr-k { margin-bottom: 0; }
  .fn-feat { grid-template-columns: 1fr; }
  .fn-feat .ff-img img { min-height: 200px; aspect-ratio: 16/9; }
  .fn-feat .ff-body { padding: clamp(22px,4vw,32px); }
  .fn-news { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .statcall { grid-template-columns: 1fr; gap: 8px; }
  .statcall .sc-src { grid-column: 1; }
  .bcrow { grid-template-columns: 6rem 1fr auto; gap: 10px; }
  .bcrow .bc-l { font-size: 12px; }
  .nextprev { grid-template-columns: 1fr; }
}
.fn-feat .ff-img { position: relative; }

/* ---------- topic hubs (anchor pages, 2026-07-24) ----------
   The corpus shipped with zero topic hubs and every one of its 1,001 articles hanging off a
   single 644 KB index. These are the pillar pages that fix the crawl depth and the link equity;
   they reuse the existing card grammar rather than introducing a second visual language. */
.fn-topics { padding: clamp(40px, 6vw, 76px) 0 0; }
.fn-topics > .wrap > h2 { font: 500 clamp(26px, 3vw, 34px)/1.1 var(--font-display); font-variation-settings: var(--frx); letter-spacing: -.01em; }
.fn-topics > .wrap > .lede { color: var(--text-muted); margin: 12px 0 clamp(22px, 3vw, 32px); max-width: 44rem; }
.fn-topicgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: clamp(16px, 2vw, 24px); }
.fn-topic {
  display: flex; flex-direction: column; gap: 8px;
  border: 1px solid var(--hairline); border-radius: var(--radius);
  padding: 22px; background: var(--paper); text-decoration: none; color: var(--ink);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.fn-topic:hover { transform: translateY(-3px); box-shadow: 0 14px 30px rgba(22,35,43,.10); border-color: var(--line); }
.fn-topic .ft-k { font: 400 11px/1.4 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--text-muted); }
.fn-topic h3 { font: 500 20px/1.16 var(--font-display); font-variation-settings: var(--frx); letter-spacing: -.01em; margin: 0; }
.fn-topic .ft-n { margin-top: auto; padding-top: 12px; font: 400 13px/1 var(--font-mono); color: var(--text-muted); }

/* pillar page: the hub's own long-form body + its grouped spoke index */
.hub-pillar .fn-body { max-width: 42rem; }
.hub-pillar .hub-index { margin-top: clamp(40px, 6vw, 72px); }
.hub-idx-h { font: 500 18px/1.2 var(--font-display); font-variation-settings: var(--frx); margin: 28px 0 14px; }
.hub-index .rg { margin-bottom: 8px; }
.hub-index .rgc h4 { font: 500 17px/1.2 var(--font-display); font-variation-settings: var(--frx); margin: 8px 0 10px; }
.hub-sibs { margin-top: clamp(36px, 5vw, 60px); padding-top: 28px; border-top: 1px solid var(--hairline); }
.hub-sibs h2 { font: 500 20px/1.2 var(--font-display); font-variation-settings: var(--frx); margin-bottom: 14px; }
.hub-sibrow { display: flex; flex-wrap: wrap; gap: 10px; }
.hub-sib { border: 1px solid var(--hairline); border-radius: 999px; padding: 9px 16px; font-size: 14px; text-decoration: none; color: var(--ink); background: var(--paper); }
.hub-sib:hover { border-color: var(--line); }
.hub-up { margin-top: 18px; font-size: 14px; }