/* =========================================================================
   Blog article styles — uses the SAME palette and fonts as the rest of the
   portfolio (NeelNanda-style). Relies on the --nn-* CSS variables defined
   in neelnanda-theme.css (loaded via head/custom.html on every page).

   Adds: article hero, callouts, research cards, interactive-demo chrome,
         series progress nav. No dark mode, no separate font stack.
   ========================================================================= */

:root {
  --nn-accent-amber: #c98c3a;
  --nn-accent-warn: #c04550;
  --nn-accent-teal: #2a9e8e;
  --nn-accent-soft: rgba(42, 111, 184, 0.10);
  --nn-accent-glow: rgba(42, 111, 184, 0.28);
  --nn-mono: "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
}

/* -------- Wrapper: follow the portfolio's reading column -------------- */
.blog-article-main {
  max-width: 1020px !important;
  margin: 0 auto !important;
  padding: 2rem 2rem 4rem !important;
  background: transparent !important;
}
.blog-article {
  max-width: 820px;
  margin: 0 auto;
  text-align: left;
}

/* -------- Hero -------------------------------------------------------- */
.blog-article__hero {
  padding: 1.2rem 0 1.6rem;
  margin: 0 0 2rem;
  border-bottom: 1px solid var(--nn-line);
}
.blog-article__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.9rem;
  font-family: var(--nn-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--nn-muted);
}
.blog-article__tag {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.28rem 0.7rem;
  background: var(--nn-accent-soft);
  color: var(--nn-accent-dark);
  border: 1px solid rgba(42, 111, 184, 0.22);
  border-radius: 3px;
  font-weight: 500;
}
.blog-article__tag::before {
  content: "";
  display: block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--nn-accent);
}
.blog-article__series { color: var(--nn-muted); }

.blog-article__title {
  font-family: var(--nn-serif) !important;
  font-weight: 700 !important;
  font-size: clamp(2rem, 4.5vw, 3.1rem) !important;
  line-height: 1.08 !important;
  letter-spacing: -0.015em !important;
  color: var(--nn-ink) !important;
  margin: 0 0 0.9rem !important;
  text-align: left !important;
  border: none !important;
  padding: 0 !important;
}

.blog-article__byline {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--nn-mono);
  font-size: 0.82rem;
  color: var(--nn-muted);
}

/* -------- Body typography (scoped to .blog-article__body) ------------ */
.blog-article__body p,
.blog-article__body li {
  font-family: var(--nn-sans);
  font-size: 1rem;
  line-height: 1.72;
  color: var(--nn-body);
  text-align: left !important;
  margin: 0.95em 0;
}

.blog-article__body h1,
.blog-article__body h2,
.blog-article__body h3,
.blog-article__body h4 {
  font-family: var(--nn-serif) !important;
  color: var(--nn-ink) !important;
  letter-spacing: -0.01em !important;
  line-height: 1.2 !important;
  margin: 2.4rem 0 0.7rem !important;
  padding: 0 !important;
  border: none !important;
  text-align: left !important;
  font-style: normal !important;
  font-weight: 700 !important;
}
.blog-article__body h2 {
  font-size: 1.7rem !important;
  margin-top: 3rem !important;
  padding-top: 1.6rem !important;
  border-top: 1px solid var(--nn-line) !important;
}
.blog-article__body h2:first-child,
.blog-article__body > h2:first-of-type {
  border-top: none !important;
  padding-top: 0 !important;
  margin-top: 2rem !important;
}
.blog-article__body h3 {
  font-size: 1.25rem !important;
  margin-top: 1.8rem !important;
  font-weight: 700 !important;
}
.blog-article__body h4 {
  font-size: 1.05rem !important;
  margin-top: 1.4rem !important;
  font-weight: 700 !important;
}

.blog-article__body strong { color: var(--nn-ink); font-weight: 700; }
.blog-article__body em { color: var(--nn-accent-dark); font-style: italic; }

.blog-article__body a {
  color: var(--nn-accent) !important;
  text-decoration: underline !important;
  text-decoration-thickness: 1px !important;
  text-underline-offset: 2px !important;
  border: none !important;
}
.blog-article__body a:hover {
  color: var(--nn-accent-dark) !important;
  text-decoration-thickness: 2px !important;
}

.blog-article__body ul,
.blog-article__body ol {
  padding-left: 1.4rem;
  margin: 0.8em 0;
  list-style-position: outside;
}
.blog-article__body ul { list-style-type: disc; }
.blog-article__body li { margin: 0.4em 0; }
.blog-article__body li::marker { color: var(--nn-accent); }

.blog-article__body hr {
  border: none;
  border-top: 1px solid var(--nn-line);
  margin: 2.4rem 0;
}

.blog-article__body :not(pre) > code {
  font-family: var(--nn-mono);
  font-size: 0.88em;
  background: var(--nn-card);
  color: var(--nn-accent-dark);
  padding: 0.12em 0.38em;
  border-radius: 3px;
  border: 1px solid var(--nn-line);
}
.blog-article__body pre {
  font-family: var(--nn-mono);
  font-size: 0.88rem;
  background: var(--nn-card);
  border: 1px solid var(--nn-line);
  border-radius: 6px;
  padding: 1rem 1.2rem;
  overflow-x: auto;
}

/* -------- Callouts (NN light variants) -------------------------------- */
.callout {
  margin: 1.6rem 0;
  padding: 1.2rem 1.3rem 1.2rem 1.35rem;
  background: var(--nn-card);
  border: 1px solid var(--nn-line);
  border-left: 3px solid var(--nn-accent);
  border-radius: 4px;
}
.callout__label {
  display: inline-block;
  margin-bottom: 0.55rem;
  font-family: var(--nn-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--nn-accent-dark);
}
.callout p:first-child { margin-top: 0 !important; }
.callout p:last-child { margin-bottom: 0 !important; }

.callout--analogy { border-left-color: var(--nn-accent); }
.callout--analogy .callout__label { color: var(--nn-accent-dark); }

.callout--key {
  border-left-color: var(--nn-accent-amber);
  background: linear-gradient(180deg, rgba(201, 140, 58, 0.06), var(--nn-card));
}
.callout--key .callout__label { color: var(--nn-accent-amber); }

.callout--warning {
  border-left-color: var(--nn-accent-warn);
  background: linear-gradient(180deg, rgba(192, 69, 80, 0.05), var(--nn-card));
}
.callout--warning .callout__label { color: var(--nn-accent-warn); }

.callout--research { border-left-color: var(--nn-accent-teal); }
.callout--research .callout__label { color: var(--nn-accent-teal); }

/* -------- Research cards ---------------------------------------------- */
.research-list {
  display: grid;
  gap: 0.7rem;
  margin: 1.8rem 0;
  padding: 0 !important;
  list-style: none !important;
}
.research-list li { padding: 0 !important; margin: 0 !important; list-style: none !important; }
.research-card {
  display: block;
  padding: 0.9rem 1.1rem;
  background: var(--nn-card);
  border: 1px solid var(--nn-line);
  border-radius: 4px;
  text-decoration: none !important;
  border-left: 3px solid transparent !important;
  transition: border-color 180ms, transform 180ms, box-shadow 180ms;
}
.research-card:hover {
  border-left-color: var(--nn-accent) !important;
  transform: translateX(2px);
  box-shadow: 0 3px 14px rgba(0, 0, 0, 0.05);
}
.research-card__title {
  font-family: var(--nn-serif);
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--nn-ink);
  margin: 0 0 0.2rem;
  line-height: 1.3;
}
.research-card__authors {
  font-family: var(--nn-mono);
  font-size: 0.78rem;
  color: var(--nn-muted);
  letter-spacing: 0.02em;
}

/* -------- Interactive-demo chrome ------------------------------------ */
.idemo {
  margin: 2.4rem 0;
}
.idemo__card {
  background: var(--nn-card);
  border: 1px solid var(--nn-line);
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
}
.idemo__head {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.6rem 1rem;
  background: #f5f5f8;
  border-bottom: 1px solid var(--nn-line);
  font-family: var(--nn-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--nn-muted);
}
.idemo__head::before {
  content: "";
  display: block;
  width: 32px;
  height: 8px;
  background:
    radial-gradient(circle 4px at 4px 4px, #e0859a 4px, transparent 4px),
    radial-gradient(circle 4px at 16px 4px, #e6b75c 4px, transparent 4px),
    radial-gradient(circle 4px at 28px 4px, #7ab29b 4px, transparent 4px);
}
.idemo__title { flex: 1; color: var(--nn-ink); font-weight: 500; }
.idemo__body { padding: 1.6rem 1.3rem; background: var(--nn-card); }

.idemo details {
  margin: 0.2rem 1.3rem 1.3rem;
  padding: 0.7rem 0.95rem;
  background: #f5f5f8;
  border: 1px solid var(--nn-line);
  border-radius: 4px;
  font-size: 0.88rem;
}
.idemo details summary {
  cursor: pointer;
  font-family: var(--nn-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--nn-muted);
  list-style: none;
}
.idemo details summary::before { content: "▸ "; color: var(--nn-accent); }
.idemo details[open] summary::before { content: "▾ "; }
.idemo details p { margin: 0.7rem 0 0; color: var(--nn-muted); font-size: 0.88rem !important; line-height: 1.6 !important; }
.idemo details code { font-size: 0.85em; }

/* -------- Buttons used inside demos ---------------------------------- */
.btn-primary {
  display: inline-block;
  padding: 0.58rem 1.2rem;
  background: var(--nn-accent);
  color: #ffffff !important;
  border: none;
  border-radius: 3px;
  font-family: var(--nn-mono);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  text-decoration: none !important;
  transition: background 150ms, transform 150ms, box-shadow 150ms;
}
.btn-primary:hover {
  background: var(--nn-accent-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px var(--nn-accent-glow);
}
.btn-primary:disabled { opacity: 0.4; cursor: not-allowed; transform: none; box-shadow: none; }

.btn-secondary {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: transparent;
  color: var(--nn-accent) !important;
  border: 1px solid var(--nn-accent) !important;
  border-radius: 3px;
  font-family: var(--nn-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  cursor: pointer;
  text-decoration: none !important;
  transition: background 150ms;
}
.btn-secondary:hover { background: var(--nn-accent-soft); }

/* -------- Series nav -------------------------------------------------- */
.series-nav {
  margin: 3rem 0 1rem;
  padding: 2rem 0 1rem;
  border-top: 1px solid var(--nn-line);
}
.series-nav__progress {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 1.2rem;
  font-family: var(--nn-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--nn-muted);
}
.series-nav__bar {
  flex: 1;
  height: 4px;
  background: var(--nn-line);
  border-radius: 2px;
  overflow: hidden;
}
.series-nav__bar-fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--nn-accent), #5a94ce);
  border-radius: 2px;
  transition: width 400ms;
}
.series-nav__links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
}
.series-nav__link {
  display: block;
  padding: 0.95rem 1.1rem;
  background: var(--nn-card);
  border: 1px solid var(--nn-line);
  border-radius: 4px;
  text-decoration: none !important;
  transition: border-color 180ms, box-shadow 180ms;
}
.series-nav__link:hover {
  border-color: var(--nn-accent) !important;
  box-shadow: 0 3px 14px rgba(0, 0, 0, 0.05);
}
.series-nav__link--disabled { opacity: 0.45; pointer-events: none; }
.series-nav__dir {
  font-family: var(--nn-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--nn-muted);
  margin-bottom: 0.3rem;
}
.series-nav__title {
  font-family: var(--nn-serif);
  font-size: 1rem;
  font-weight: 600;
  color: var(--nn-ink);
}
.series-nav__link--next { text-align: right; }

/* -------- Responsive -------------------------------------------------- */
@media (max-width: 640px) {
  .blog-article-main { padding: 1.2rem 1.1rem 2.5rem !important; }
  .blog-article__title { font-size: 1.8rem !important; }
  .blog-article__body h2 { font-size: 1.4rem !important; }
  .blog-article__body h3 { font-size: 1.1rem !important; }
  .idemo__body { padding: 1.2rem 0.9rem; }
  .series-nav__links { grid-template-columns: 1fr; }
  .series-nav__link--next { text-align: left; }
}

/* =========================================================================
   Polish pass — senior-designer touches. Reading progress, drop cap,
   pull quotes, anchor links, demo chrome refinement, animated heroes.
   ========================================================================= */

/* 1 · Reading progress bar at the top of a post */
.reading-progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 3px;
  z-index: 100;
  pointer-events: none;
  background: transparent;
}
.reading-progress__fill {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--nn-accent), #5a94ce, var(--nn-accent-teal));
  box-shadow: 0 0 8px var(--nn-accent-glow);
  transition: width 80ms linear;
}

/* 2 · Hero refinement — subtle gradient under the tag, more breathing room */
.blog-article__hero {
  padding: 0.4rem 0 2rem;
  margin: 0 0 2.4rem;
  border-bottom: 1px solid var(--nn-line);
  position: relative;
}
.blog-article__hero::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, var(--nn-accent) 0%, var(--nn-accent) 40px, transparent 40px);
}
.blog-article__tag {
  transition: transform 200ms ease, box-shadow 200ms ease;
}
.blog-article__tag:hover {
  transform: translateY(-1px);
  box-shadow: 0 2px 10px var(--nn-accent-soft);
}

/* 3 · Drop cap on the first paragraph of every post */
.blog-article__body > p:first-of-type::first-letter {
  font-family: var(--nn-serif);
  font-weight: 700;
  font-size: 3.6em;
  line-height: 0.9;
  float: left;
  margin: 0.1em 0.14em -0.08em 0;
  color: var(--nn-ink);
  background: linear-gradient(180deg, var(--nn-accent-dark), var(--nn-accent));
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Opt-out class for posts where the drop cap doesn't fit */
.blog-article__body.no-dropcap > p:first-of-type::first-letter {
  font-size: inherit; float: none; margin: 0; color: inherit;
  -webkit-text-fill-color: currentColor;
}

/* 4 · Anchor link icon on heading hover */
.blog-article__body h2,
.blog-article__body h3 { position: relative; }
.blog-article__body h2 .anchor,
.blog-article__body h3 .anchor {
  position: absolute;
  left: -1.6rem;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--nn-mono);
  font-size: 0.85rem;
  color: var(--nn-soft);
  opacity: 0;
  transition: opacity 180ms, color 180ms;
  text-decoration: none !important;
}
.blog-article__body h2:hover .anchor,
.blog-article__body h3:hover .anchor { opacity: 1; }
.blog-article__body h2 .anchor:hover,
.blog-article__body h3 .anchor:hover { color: var(--nn-accent); }

/* 5 · Pull quote — large, serif, centered, with decorative mark */
.pullquote {
  margin: 2.8rem 0 !important;
  padding: 1.8rem 1rem !important;
  border-top: 1px solid var(--nn-line);
  border-bottom: 1px solid var(--nn-line);
  text-align: center !important;
  font-family: var(--nn-serif) !important;
  font-size: 1.5rem !important;
  font-style: italic;
  line-height: 1.35 !important;
  color: var(--nn-ink) !important;
  letter-spacing: -0.01em;
  position: relative;
  background: transparent !important;
}
.pullquote::before {
  content: "“";
  position: absolute;
  top: -0.3rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--nn-serif);
  font-size: 3rem;
  color: var(--nn-accent);
  font-style: normal;
  line-height: 1;
  background: var(--nn-body-bg);
  padding: 0 0.4rem;
}

/* 6 · Callouts — more depth, a faint glyph */
.callout {
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.02);
  transition: transform 180ms ease, box-shadow 180ms ease;
}
.callout:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
}
.callout__label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.callout__label::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 6px currentColor;
}

/* 7 · Research cards — add a subtle "↗" glyph, tighter layout */
.research-card { position: relative; padding-right: 2.2rem; }
.research-card::after {
  content: "↗";
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--nn-mono);
  font-size: 1rem;
  color: var(--nn-soft);
  transition: color 180ms, transform 180ms;
}
.research-card:hover::after {
  color: var(--nn-accent);
  transform: translateY(-50%) translate(2px, -2px);
}

/* 8 · Demo chrome refinements */
.idemo__card {
  box-shadow:
    0 1px 2px rgba(0, 0, 0, 0.025),
    0 12px 30px rgba(0, 0, 0, 0.035);
  transition: box-shadow 240ms ease;
}
.idemo__card:hover {
  box-shadow:
    0 1px 2px rgba(0, 0, 0, 0.04),
    0 18px 40px rgba(0, 0, 0, 0.055);
}
.idemo__head {
  background: linear-gradient(180deg, #f7f8fb, #eeeff4);
  border-bottom: 1px solid var(--nn-line);
}

/* 9 · Series progress — animated shimmer */
.series-nav__bar-fill {
  position: relative;
  overflow: hidden;
}
.series-nav__bar-fill::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.65), transparent);
  animation: shimmer 2.6s linear infinite;
}
@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* 10 · Smooth scroll behaviour */
html { scroll-behavior: smooth; }

/* 11 · Prose refinements: first paragraph gets a little more weight */
.blog-article__body > p:first-of-type {
  font-size: 1.08rem;
  line-height: 1.72;
  color: var(--nn-ink);
}

/* 12 · Selected text */
body.blog-dark ::selection,
.blog-article ::selection {
  background: var(--nn-accent-soft);
  color: var(--nn-accent-dark);
}

/* 13 · Keyboard shortcut style for inline kbd */
.blog-article__body kbd {
  font-family: var(--nn-mono);
  font-size: 0.85em;
  padding: 0.15em 0.4em;
  background: var(--nn-card);
  border: 1px solid var(--nn-line);
  border-bottom-width: 2px;
  border-radius: 3px;
  color: var(--nn-ink);
}

/* 14 · Footnote-ish small asides */
.aside {
  display: block;
  margin: 0.8rem 0;
  padding-left: 1rem;
  border-left: 2px solid var(--nn-line);
  font-size: 0.92rem;
  color: var(--nn-muted);
  line-height: 1.6;
}

/* 15 · Responsive fallbacks for polish */
@media (max-width: 640px) {
  .blog-article__body > p:first-of-type::first-letter {
    font-size: 3em;
  }
  .pullquote { font-size: 1.2rem !important; padding: 1.4rem 0.5rem !important; }
  .blog-article__body h2 .anchor,
  .blog-article__body h3 .anchor { display: none; }
}

/* ===================================================================== */
/* Amber-accent posts (transformer series). Opt in via front-matter:      */
/*   accent: amber                                                        */
/* Swaps the demo-chrome and inline accent tokens without touching the    */
/* rest of the site. Keep the body type and link colours unchanged so the */
/* reading experience stays consistent.                                   */
/* ===================================================================== */
.blog-article-main.is-amber {
  --nn-accent-p3: #b77214;
  --nn-accent-p3-dark: #7c4d0a;
  --nn-accent-p3-soft: rgba(251, 191, 36, 0.16);
  --nn-accent-p3-glow: rgba(251, 191, 36, 0.45);
  --nn-accent-p3-line: rgba(183, 114, 20, 0.38);
}
.blog-article-main.is-amber .idemo__head {
  background: linear-gradient(180deg, #fff6e0 0%, #ffe9b8 100%);
  color: var(--nn-accent-p3-dark);
  border-bottom-color: var(--nn-accent-p3-line);
}
.blog-article-main.is-amber .idemo__head::before {
  background:
    radial-gradient(circle 4px at 4px 4px, #fbbf24 4px, transparent 4px),
    radial-gradient(circle 4px at 16px 4px, #f59e0b 4px, transparent 4px),
    radial-gradient(circle 4px at 28px 4px, #b77214 4px, transparent 4px);
}
.blog-article-main.is-amber .idemo__title { color: var(--nn-accent-p3-dark); }
.blog-article-main.is-amber .idemo details summary::before { color: var(--nn-accent-p3); }
.blog-article-main.is-amber .callout--key {
  border-left-color: var(--nn-accent-p3) !important;
  background: var(--nn-accent-p3-soft) !important;
}
.blog-article-main.is-amber .callout--key .callout__label {
  color: var(--nn-accent-p3-dark) !important;
}

/* Math typesetting: soften KaTeX colour to match body ink */
.katex { color: var(--nn-ink); font-size: 1.03em; }
.math-translate {
  margin: 0.35rem 0 1.4rem;
  padding: 0.55rem 0.9rem;
  font-size: 0.84rem;
  color: var(--nn-muted);
  background: #f7f5ef;
  border-left: 2px solid var(--nn-accent-p3, var(--nn-accent));
  border-radius: 0 3px 3px 0;
  font-style: italic;
}
.math-block {
  margin: 1.3rem 0 0.3rem;
  padding: 1.1rem 1.2rem;
  background: #fafaf7;
  border: 1px solid var(--nn-line);
  border-radius: 4px;
  overflow-x: auto;
}
.math-block + .math-translate { margin-top: -0.4rem; }


/* ================================================================
   Distill pass — rebuild callouts, references, and figure chrome
   Everything below intentionally overrides earlier rules. The old
   colored-callout / research-card / traffic-light-demo aesthetic
   is replaced with restrained editorial styling: quiet marginalia,
   hanging-indent bibliography, unadorned figures with real captions.
   ================================================================ */

/* Reading column — narrow it toward Distill's ~680px for better rag. */
.blog-article__body {
  max-width: 700px;
  margin: 0 auto;
}
.blog-article__body p,
.blog-article__body li {
  font-size: 1.05rem;
  line-height: 1.72;
  color: #2a2a2a;
}
.blog-article__body h2 {
  font-family: var(--nn-serif) !important;
  font-size: 1.65rem !important;
  font-weight: 500 !important;
  letter-spacing: -0.01em !important;
  color: var(--nn-ink) !important;
  margin: 3.2rem 0 1.1rem !important;
  padding: 0 !important;
  border: none !important;
}
.blog-article__body h3 {
  font-family: var(--nn-mono) !important;
  font-size: 0.78rem !important;
  font-weight: 500 !important;
  letter-spacing: 0.14em !important;
  text-transform: uppercase !important;
  color: var(--nn-muted) !important;
  margin: 2.4rem 0 0.6rem !important;
  padding: 0 !important;
  border: none !important;
}
.blog-article__body em {
  color: inherit !important;
  font-style: italic;
}
.blog-article__body strong { font-weight: 600; }

/* Quiet, marginalia-style asides — replaces .callout everything.
   No colored borders. No colored backgrounds. A single thin rule and
   italic serif type. Variants keep the class name for backward compat
   but render identically — variation via inline label only. */
.callout,
.callout--analogy,
.callout--key,
.callout--warning,
.callout--research {
  margin: 2rem 0 !important;
  padding: 0.2rem 0 0.2rem 1.4rem !important;
  background: transparent !important;
  border: none !important;
  border-left: 1px solid var(--nn-muted) !important;
  border-radius: 0 !important;
}
.callout__label {
  display: block !important;
  margin: 0 0 0.35rem !important;
  padding: 0 !important;
  font-family: var(--nn-mono) !important;
  font-size: 0.68rem !important;
  font-weight: 400 !important;
  letter-spacing: 0.22em !important;
  text-transform: uppercase !important;
  color: var(--nn-soft) !important;
}
.callout p,
.callout--analogy p,
.callout--key p,
.callout--warning p {
  font-family: var(--nn-serif) !important;
  font-size: 1.02rem !important;
  line-height: 1.62 !important;
  color: var(--nn-body) !important;
  font-style: italic !important;
  margin: 0 !important;
}
.callout p strong,
.callout--key p strong,
.callout--warning p strong,
.callout--analogy p strong {
  font-style: normal;
  color: var(--nn-ink);
}
.callout p em { font-style: normal; }

/* Bibliography — hanging-indent numbered list, no cards. Overrides
   .research-list / .research-card completely. */
.research-list {
  display: block !important;
  gap: 0 !important;
  margin: 2rem 0 0 !important;
  padding: 1.4rem 0 0 !important;
  border-top: 1px solid var(--nn-line) !important;
  list-style: none !important;
  counter-reset: bib;
}
.research-list li {
  position: relative;
  padding: 0.55rem 0 0.55rem 2.6rem !important;
  margin: 0 !important;
  list-style: none !important;
  counter-increment: bib;
}
.research-list li::before {
  content: counter(bib);
  position: absolute;
  left: 0;
  top: 0.9rem;
  font-family: var(--nn-mono);
  font-size: 0.78rem;
  color: var(--nn-soft);
  letter-spacing: 0.04em;
  width: 2rem;
  text-align: right;
}
.research-card {
  display: block !important;
  padding: 0 !important;
  background: transparent !important;
  border: none !important;
  border-radius: 0 !important;
  text-decoration: none !important;
  transition: none !important;
}
.research-card:hover {
  border-left-color: transparent !important;
  transform: none !important;
  box-shadow: none !important;
}
.research-card:hover .research-card__title {
  color: var(--nn-accent-dark) !important;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
.research-card__title {
  font-family: var(--nn-serif) !important;
  font-size: 1rem !important;
  font-weight: 500 !important;
  color: var(--nn-ink) !important;
  line-height: 1.4 !important;
  margin: 0 0 0.2rem !important;
  transition: color 180ms;
}
.research-card__authors {
  font-family: var(--nn-mono) !important;
  font-size: 0.72rem !important;
  color: var(--nn-muted) !important;
  letter-spacing: 0.02em !important;
  line-height: 1.55;
}

/* Figures — kill the "app" chrome. No traffic-light dots. No card
   shadow. Just a thin frame, a small serif caption, and the interactive
   content itself. Demos can now break slightly wider than the reading
   column, like Distill's inline figures. */
.blog-article__body .idemo {
  margin: 2.4rem calc(-1 * ((100% - 700px) / 2 - 40px)) !important;
  max-width: none;
}
@media (max-width: 900px) {
  .blog-article__body .idemo { margin: 2.4rem 0 !important; }
}
.idemo__card {
  background: #fdfdfc !important;
  border: 1px solid var(--nn-line) !important;
  border-radius: 2px !important;
  box-shadow: none !important;
  overflow: visible !important;
}
.idemo__head {
  padding: 0.8rem 1.2rem !important;
  background: transparent !important;
  border-bottom: 1px solid var(--nn-line) !important;
  font-family: var(--nn-mono) !important;
  font-size: 0.66rem !important;
  letter-spacing: 0.22em !important;
  text-transform: uppercase !important;
  color: var(--nn-soft) !important;
}
.idemo__head::before {
  content: "Fig." !important;
  display: inline !important;
  width: auto !important;
  height: auto !important;
  background: none !important;
  padding-right: 0.6rem;
  color: var(--nn-muted);
  font-weight: 500;
}
.idemo__title { color: var(--nn-muted) !important; font-weight: 400 !important; }
.idemo__body { padding: 1.4rem 1.3rem !important; background: transparent !important; }
.idemo details {
  margin: 0 1.3rem 1.2rem !important;
  padding: 0 !important;
  background: transparent !important;
  border: none !important;
  border-top: 1px solid var(--nn-line) !important;
  border-radius: 0 !important;
  padding-top: 0.9rem !important;
}
.idemo details summary {
  font-family: var(--nn-mono) !important;
  font-size: 0.66rem !important;
  letter-spacing: 0.22em !important;
  text-transform: uppercase !important;
  color: var(--nn-soft) !important;
}
.idemo details p {
  font-family: var(--nn-serif) !important;
  font-size: 0.92rem !important;
  font-style: italic;
  color: var(--nn-muted) !important;
  line-height: 1.6 !important;
}

/* Sidenote pattern for use in body copy: an inline superscript number
   that reveals a short marginal note on hover. Use as:
     <span class="sidenote"><sup>1</sup><span>your note here</span></span>
*/
.sidenote {
  position: relative;
  display: inline;
  cursor: help;
}
.sidenote sup {
  font-family: var(--nn-mono);
  font-size: 0.68em;
  color: var(--nn-accent-dark);
  padding: 0 0.15em;
  cursor: help;
}
.sidenote > span {
  position: absolute;
  left: 105%;
  top: -0.4em;
  width: 220px;
  padding: 0.55rem 0.8rem;
  background: #fdfdfc;
  border: 1px solid var(--nn-line);
  border-left: 2px solid var(--nn-accent);
  font-family: var(--nn-serif);
  font-size: 0.86rem;
  line-height: 1.5;
  color: var(--nn-muted);
  font-style: italic;
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 180ms, transform 180ms;
  pointer-events: none;
  z-index: 20;
}
.sidenote:hover > span,
.sidenote:focus > span {
  opacity: 1;
  transform: translateX(0);
  pointer-events: auto;
}
@media (max-width: 900px) {
  .sidenote > span {
    position: static;
    display: block;
    width: auto;
    margin: 0.3rem 0;
    opacity: 1;
    transform: none;
  }
}