/* ==========================================================================
   blog.css — styles for lesleychou.github.io/blog/
   Direction: "Figure Cards" — every post leads with its teaser figure,
   mirroring the research-highlight cards on the homepage.

   Loaded AFTER bootstrap@5.3.3. Does NOT load stylesheets/stylesheet.css
   (that is the legacy Meyer reset from the old site; it overrides h1-h3,
   kills list markers, and forces Raleway + text-shadow).
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Base — matches index.html
   -------------------------------------------------------------------------- */

body {
  font-family: 'Inter', sans-serif;
  line-height: 1.6;
  color: #212529;
}

/* Same container width as the homepage, so nav + content line up exactly */
.container {
  max-width: 900px !important;
}
@media (min-width: 1200px) {
  .container {
    max-width: 1000px !important;
  }
}

/* Homepage section header ("<icon> Blog") */
.header-medium {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: #333;
}

.blog-intro {
  color: #6c757d;
  font-size: 0.95rem;
  max-width: 62ch;
  margin-bottom: 1.25rem;
}

/* --------------------------------------------------------------------------
   1b. Series banner
   The one loud element on the site. Crimson is reserved for this series and
   nothing else, so it reads as a signal rather than decoration.
   -------------------------------------------------------------------------- */

:root {
  --series-red: #a4161a;
}

/* A short rule above the eyebrow rather than a tall bar down the side: the
   crimson still reads, without boxing in four stacked lines of text. */
.series-banner {
  margin: 3rem 0 3.25rem;
}

.series-eyebrow {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.85rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--series-red);
  margin-bottom: 1rem;
}
.series-eyebrow::before {
  content: "";
  width: 34px;
  height: 3px;
  background: var(--series-red);
  flex: none;
}

.series-title {
  font-size: clamp(2.1rem, 6.4vw, 3.4rem);
  font-weight: 800;
  line-height: 1.06;
  /* Relaxed from -0.038em and given real word gaps — at this weight and size a
     tight track made the words run together. No max-width: the extra spacing
     would push it to a second line. */
  letter-spacing: -0.015em;
  word-spacing: 0.11em;
  color: #111418;
  margin: 0 0 1.1rem;
  text-wrap: balance;
}

.series-standfirst {
  font-size: 1.08rem;
  line-height: 1.6;
  color: #55606c;
  max-width: 50ch;
  margin: 0;
}

/* Department line on a card — the series name travels with every entry, so a
   card still carries it when seen on its own. */
.post-card .series-line {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.4rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.78rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--series-red);
  font-weight: 500;
  line-height: 1.4;
}
.post-card .series-line .num {
  color: #adb5bd;
  letter-spacing: 0.04em;
}

/* --------------------------------------------------------------------------
   2. Index — tag/kind filter chips
   -------------------------------------------------------------------------- */

.filter-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  margin-bottom: 1.5rem;
}

/* Names the axis the chips filter on — "ADRS / Nanochat / SkySynth" is not
   self-explanatory without it. */
.filter-label {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.8rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: #adb5bd;
  margin-right: 0.35rem;
}

.chip {
  font-size: 0.8rem;
  line-height: 1.4;
  color: #495057;
  background: #fff;
  border: 1px solid #dee2e6;
  border-radius: 20px;
  padding: 0.25rem 0.8rem;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.chip:hover {
  border-color: #adb5bd;
  color: #212529;
}
.chip[aria-pressed="true"] {
  background: #0d6efd;
  border-color: #0d6efd;
  color: #fff;
}
.chip:focus-visible {
  outline: 2px solid #0d6efd;
  outline-offset: 2px;
}

/* Static (non-clickable) chips used as tag labels on a post page */
.chip-static {
  cursor: default;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
}
.chip-static:hover {
  border-color: #dee2e6;
  color: #495057;
}

/* --------------------------------------------------------------------------
   3. Index — card grid
   -------------------------------------------------------------------------- */

/* Tracks are capped at 430px rather than 1fr, so a lone card keeps its shape
   instead of stretching the full container and blowing up its 16:9 thumbnail.
   Two columns on desktop, one below ~540px. */
.post-grid {
  display: grid;
  /* min(260px, 100%) guards the 260px floor at very narrow widths (heavy page
     zoom, <300px viewports) so a track can never be wider than its container. */
  grid-template-columns: repeat(auto-fill, minmax(min(260px, 100%), 430px));
  justify-content: start;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.post-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid #e9ecef;
  border-radius: 10px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: box-shadow 0.2s, transform 0.2s, border-color 0.2s;
}
.post-card:hover,
.post-card:focus-visible {
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.09);
  transform: translateY(-2px);
  border-color: #dee2e6;
  color: inherit;
}
.post-card:focus-visible {
  outline: 2px solid #0d6efd;
  outline-offset: 2px;
}
.post-card[hidden] {
  display: none !important;
}

.post-card .thumb {
  aspect-ratio: 16 / 9;
  max-width: 100%;
  background: #f8f9fa;
  border-bottom: 1px solid #e9ecef;
  overflow: hidden;
}
.post-card .thumb img {
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
}

/* No teaser figure yet: the panel carries the part number instead. For a
   numbered series this is real information, and it reads as deliberate rather
   than as a missing image. Swap in a real <img> once the post has a figure. */
.post-card .thumb.is-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 21 / 9;
  background: #fbfbfc;
}
.post-card .thumb.is-empty::after {
  content: attr(data-label);
  font-size: clamp(2.4rem, 7vw, 3.4rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--series-red);
  opacity: 0.16;
}
.post-card:hover .thumb.is-empty::after {
  opacity: 0.28;
}

.post-card .card-body {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  flex: 1;
  padding: 0.9rem 1rem 1rem;
}

.post-card .kicker {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.8rem;
  letter-spacing: 0.03em;
  color: #868e96;
  font-variant-numeric: tabular-nums;
}
.post-card .kicker .kind {
  color: #0d6efd;
  font-weight: 500;
  text-transform: uppercase;
}

.post-card .card-title {
  font-size: 0.98rem;
  font-weight: 600;
  line-height: 1.4;
  color: #212529;
  margin: 0;
  transition: color 0.15s;
}
.post-card:hover .card-title {
  color: #0d6efd;
}

.post-card .card-dek {
  font-size: 0.82rem;
  color: #6c757d;
  line-height: 1.55;
  margin: 0;
  flex: 1;
}

.empty-state {
  color: #6c757d;
  font-size: 0.9rem;
  padding: 2rem 0;
  text-align: center;
}

/* --------------------------------------------------------------------------
   4. Post page — hero
   -------------------------------------------------------------------------- */

.post-hero {
  background: #f8f9fa;
  border-bottom: 1px solid #e9ecef;
  margin-bottom: 1.75rem;
}
.post-hero .container {
  padding-block: 1.9rem 1.7rem;
}

.post-kicker {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.92rem;
  letter-spacing: 0.06em;
  color: #6c757d;
  margin-bottom: 0.7rem;
}
.post-kicker a {
  color: #0d6efd;
  text-decoration: none;
}
.post-kicker a:hover {
  text-decoration: underline;
}

.post-title {
  font-size: 1.85rem;
  font-weight: 700;
  line-height: 1.24;
  letter-spacing: -0.02em;
  color: #212529;
  margin: 0 0 0.7rem;
  text-wrap: balance;
}

/* Highlighted span inside a title. Amber deliberately sits outside the site's
   blue and the series crimson, so it reads as emphasis rather than as either
   the link colour or the series accent. box-decoration-break keeps the
   highlight intact when the title wraps across lines. */
.flag {
  background: #ffe9a8;
  padding: 0.02em 0.2em;
  border-radius: 3px;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

.post-dek {
  font-size: 1.03rem;
  color: #495057;
  line-height: 1.6;
  margin: 0 0 1rem;
  max-width: 60ch;
}

.post-byline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  color: #868e96;
}
.post-byline .sep {
  color: #ced4da;
}

/* Italic one-line hook under the title (the reference post's "subtitle"). */
.post-subtitle {
  font-size: 1.12rem;
  font-style: italic;
  color: #55606c;
  line-height: 1.5;
  margin: -0.2rem 0 0.9rem;
  max-width: 60ch;
}

/* Author names lead the byline; darker than the date so they read first. */
.post-authors {
  color: #495057;
  font-weight: 500;
}
.post-authors a {
  color: inherit;
  text-decoration: underline;
  text-decoration-color: #ced4da;
  text-underline-offset: 3px;
}
.post-authors a:hover {
  color: #0d6efd;
  text-decoration-color: currentColor;
}

/* "Also posted on ..." line under the byline, for cross-posted entries */
.post-crosspost {
  margin: 0.8rem 0 0;
  font-size: 0.95rem;
  color: #868e96;
}
.post-crosspost i {
  font-size: 0.85rem;
  color: #adb5bd;
}
.post-crosspost a {
  color: #0d6efd;
  text-decoration: none;
}
.post-crosspost a:hover {
  text-decoration: underline;
}

/* Department line in the post hero — same crimson treatment as the cards, so a
   reader landing straight on a post sees the series before the title. */
.post-kicker .series {
  color: var(--series-red);
  font-weight: 600;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}
.post-kicker .series-num {
  color: #adb5bd;
}

/* Visible draft banner. Delete the whole block from a post once it is written. */
.draft-note {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  border: 1px dashed #ced4da;
  border-radius: 8px;
  background: #fcfcfd;
  padding: 0.9rem 1.1rem;
  margin: 0 0 1.75rem;
  font-size: 0.88rem;
  color: #6c757d;
  line-height: 1.6;
}
.draft-note i {
  color: #adb5bd;
  margin-top: 0.2rem;
}
.draft-note b {
  color: #495057;
  font-weight: 600;
}

/* Outline scaffold — the section list a draft starts from */
.outline {
  margin: 0 0 1.75rem;
}
.outline > b {
  display: block;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #adb5bd;
  font-weight: 500;
  margin-bottom: 0.6rem;
}
.outline ol {
  margin: 0;
  padding-left: 1.15rem;
  font-size: 0.92rem;
  color: #6c757d;
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   4b. Post page — contents
   Populated from the page's own h2 ids, so it can never go stale. Stays hidden
   until it has links (no JS, or a post with fewer than two sections).
   -------------------------------------------------------------------------- */

.post-toc:empty {
  display: none;
}
.post-toc {
  border: 1px solid #e9ecef;
  border-radius: 10px;
  padding: 1rem 1.2rem;
  margin: 0 0 1.75rem;
}
.post-toc > b {
  display: block;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #adb5bd;
  font-weight: 500;
  margin-bottom: 0.7rem;
}
.post-toc ol {
  list-style: none;
  counter-reset: toc;
  margin: 0;
  padding: 0;
  columns: 2;
  column-gap: 2.5rem;
}
.post-toc li {
  counter-increment: toc;
  break-inside: avoid;
  margin-bottom: 0.35rem;
}
.post-toc li::before {
  content: counter(toc) ".";
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.78rem;
  color: #ced4da;
  margin-right: 0.5rem;
  font-variant-numeric: tabular-nums;
}
.post-toc a {
  color: #0d6efd;
  text-decoration: none;
  font-size: 0.92rem;
}
.post-toc a:hover {
  text-decoration: underline;
}

@media (max-width: 575.98px) {
  .post-toc ol {
    columns: 1;
  }
}

/* --------------------------------------------------------------------------
   5. Post page — TL;DR box
   -------------------------------------------------------------------------- */

.tldr {
  border: 1px solid #cfe2ff;
  background: #f2f7ff;
  border-radius: 10px;
  padding: 1rem 1.15rem;
  margin: 0 0 1.75rem;
}
.tldr > b {
  display: block;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.95rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #0d6efd;
  margin-bottom: 0.55rem;
}
.tldr ul {
  margin: 0;
  padding-left: 1.1rem;
  font-size: 1rem;
  color: #343a40;
  line-height: 1.65;
}
.tldr li + li {
  margin-top: 0.3rem;
}

/* Prose form of the TL;DR, for when the summary is paragraphs rather than
   bullets. The label leads the first sentence inline instead of sitting above. */
.tldr p {
  margin: 0 0 0.7rem;
  font-size: 0.95rem;
  color: #343a40;
  line-height: 1.68;
}
.tldr p:last-child {
  margin-bottom: 0;
}
.tldr p b {
  color: #0d6efd;
  font-weight: 700;
}

/* --------------------------------------------------------------------------
   6. Post page — body typography
   -------------------------------------------------------------------------- */

.post-body {
  font-size: 1rem;
  line-height: 1.72;
  color: #343a40;
}
.post-body h2 {
  font-size: 1.18rem;
  font-weight: 600;
  color: #212529;
  letter-spacing: -0.01em;
  margin: 2rem 0 0.65rem;
  scroll-margin-top: 5rem; /* clears the sticky navbar on #anchor jumps */
}
/* Was 1.02rem against 1rem body text — near-invisible as a heading. Given real
   size and breathing room now that h3 carries named subsections. */
.post-body h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: #212529;
  letter-spacing: -0.005em;
  margin: 1.9rem 0 0.6rem;
  scroll-margin-top: 5rem;
}
.post-body p {
  margin: 0 0 1rem;
}
.post-body a {
  color: #0d6efd;
  text-decoration: none;
}
.post-body a:hover {
  text-decoration: underline;
}
.post-body ul,
.post-body ol {
  margin: 0 0 1rem;
  padding-left: 1.3rem;
}
.post-body li {
  margin-bottom: 0.3rem;
}

/* Figures — the hero figure sits outside .post-body so it can run full width */
.post-fig {
  margin: 0 0 1.75rem;
}

.post-body .post-fig {
  margin: 1.75rem 0;
}

/* Figures that read better small than sprawling. Applied to the cover figure
   and the use-case diagram so they share one width. Must come AFTER the
   `.post-body .post-fig` margin rule above — same specificity, so source order
   decides whether margin-inline:auto survives. */
.post-fig.is-narrow,
.post-body .post-fig.is-narrow {
  max-width: 620px;
  margin-inline: auto;
}
/* A live chart in place of an <img>: same card frame as an image figure */
.post-chart {
  border: 1px solid #e9ecef;
  max-width: 100%;
  border-radius: 8px;
  padding: 1rem 1rem 0.6rem;
  background: #fff;
}
/* vegaEmbed adds .vega-embed (inline-block) to the container itself, which
   collapses a width:"container" chart to nothing. Keep it a full-width block,
   capped so a single small chart doesn't sprawl. */
.post-chart.vega-embed {
  display: block;
  width: min(100%, 520px);
  margin-inline: auto;
}
/* Wide figures (e.g. 2.6:1 diagrams) shown whole on a card instead of cropped */
.post-card .thumb.is-contain img {
  object-fit: contain;
  object-position: center;
  padding: 0.5rem;
}
.post-fig img {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  border: 1px solid #e9ecef;
  border-radius: 8px;
}
/* Transparent figures (no background of their own) drop the card frame */
.post-fig.is-bare img {
  border: 0;
  border-radius: 0;
}
/* Centred and darker than the old 0.82rem/#6c757d — captions carry real
   information here, so they should not read as fine print. */
.post-fig figcaption {
  font-size: 1rem;
  color: #495057;
  line-height: 1.6;
  margin-top: 0.8rem;
  text-align: center;
  text-wrap: pretty;
}
.post-fig figcaption b {
  color: #111418;
  font-weight: 700;
}

/* Quieter than .callout — an indented aside for context that sits beside the
   argument rather than in it. */
.note {
  border-left: 3px solid #dee2e6;
  margin: 1.5rem 0 1.5rem 1.5rem;
  padding: 0.15rem 0 0.15rem 1.15rem;
  font-size: 0.92rem;
  color: #6c757d;
  line-height: 1.7;
}
.note b {
  color: #495057;
  font-weight: 600;
}

/* Pull-out callout */
.callout {
  background: #f8f9fa;
  border-left: 3px solid #0d6efd;
  border-radius: 0 6px 6px 0;
  padding: 0.85rem 1.1rem;
  margin: 1.5rem 0;
  font-size: 0.95rem;
  color: #495057;
}

/* Call-to-action variant: a full box rather than a left rule, so the
   "get in touch" ending reads as distinct from a mid-post pull-out. */
.callout.cta {
  background: #f2f7ff;
  border: 1px solid #cfe2ff;
  border-left: 4px solid #0d6efd;
  border-radius: 6px;
}
.callout.cta p {
  margin: 0;
}
.callout.cta p + p {
  margin-top: 0.4rem;
}

/* Icon button that copies an address without printing it (script in post) */
.copy-email {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  vertical-align: -1px;
  width: 22px;
  height: 22px;
  padding: 0;
  margin: 0 2px;
  border: 0;
  background: transparent;
  color: #0d6efd;
  cursor: pointer;
}
.copy-email:hover,
.copy-email:focus-visible {
  color: #0a58ca;
}
.copy-email-tip {
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  font-size: 0.72rem;
  padding: 2px 8px;
  border-radius: 4px;
  background: #0d6efd;
  color: #fff;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s;
}
.copy-email-tip.show {
  opacity: 1;
}

/* Code */
.post-body code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.86em;
  background: #f1f3f5;
  border-radius: 4px;
  padding: 0.1em 0.35em;
  color: #343a40;
}
/* A <code> inside a link must take the link colour, or the link reads as plain
   code and nobody clicks it. */
.post-body a code {
  color: inherit;
}

.post-body pre {
  background: #f8f9fa;
  border: 1px solid #e9ecef;
  border-radius: 6px;
  padding: 0.85rem 1rem;
  margin: 1.25rem 0;
  overflow-x: auto;
}
.post-body pre code {
  background: none;
  border: 0;
  padding: 0;
  font-size: 0.78rem;
  line-height: 1.7;
}

/* Wide tables scroll on their own instead of pushing the page sideways */
.table-scroll {
  overflow-x: auto;
  margin: 1.25rem 0;
}
.post-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  font-variant-numeric: tabular-nums;
}
.post-body th,
.post-body td {
  text-align: left;
  padding: 0.45rem 0.8rem 0.45rem 0;
  border-bottom: 1px solid #e9ecef;
}
.post-body th {
  font-weight: 600;
  color: #212529;
  border-bottom-color: #ced4da;
  white-space: nowrap;
}

/* Display equation */
.equation {
  text-align: center;
  font-style: italic;
  color: #212529;
  padding: 0.9rem 0;
  margin: 1.25rem 0;
  border-block: 1px solid #f1f3f5;
  overflow-x: auto;
}

/* Reference list rendered as a section inside .post-body */
.ref-list {
  list-style: none;
  counter-reset: ref;
  margin: 0;
  padding: 0;
  font-size: 0.95rem;
}
.ref-list li {
  counter-increment: ref;
  position: relative;
  padding-left: 2rem;
  margin-bottom: 0.6rem;
  line-height: 1.65;
}
.ref-list li::before {
  content: "[" counter(ref) "]";
  position: absolute;
  left: 0;
  top: 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.8rem;
  color: #adb5bd;
  font-variant-numeric: tabular-nums;
}
.ref-list li {
  scroll-margin-top: 5rem;
}
/* Clicking a [n] citation highlights the reference it lands on */
.ref-list li:target {
  color: #0d6efd;
}
.ref-list em {
  color: #212529;
}
.ref-list b {
  font-weight: 600;
  color: #212529;
}

/* Citations + references */
sup.cite {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.7em;
  line-height: 0;
  margin-left: 0.1em;
}
sup.cite a {
  color: #0d6efd;
  text-decoration: none;
}
sup.cite a:hover {
  text-decoration: underline;
}

.post-refs {
  margin-top: 2.25rem;
  padding-top: 1.1rem;
  border-top: 1px solid #e9ecef;
  font-size: 0.84rem;
  color: #6c757d;
}
.post-refs > b {
  display: block;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #adb5bd;
  font-weight: 500;
  margin-bottom: 0.6rem;
}
.post-refs ol {
  margin: 0;
  padding-left: 1.15rem;
}
.post-refs li {
  margin-bottom: 0.45rem;
  line-height: 1.55;
}
.post-refs a {
  color: #0d6efd;
  text-decoration: none;
}
.post-refs a:hover {
  text-decoration: underline;
}

/* --------------------------------------------------------------------------
   6b. Post page — FAQ
   -------------------------------------------------------------------------- */

.faq ol {
  list-style: none;
  counter-reset: faq;
  margin: 0;
  padding: 0;
}
.faq li {
  counter-increment: faq;
  padding-left: 2rem;
  position: relative;
}
.faq li + li {
  margin-top: 1.4rem;
}
.faq li::before {
  content: counter(faq) ".";
  position: absolute;
  left: 0;
  top: 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.85rem;
  color: #adb5bd;
  font-variant-numeric: tabular-nums;
}
.faq-q {
  font-size: 1rem;
  font-weight: 600;
  color: #212529;
  line-height: 1.5;
  margin: 0 0 0.35rem;
}
.faq-a {
  font-size: 0.95rem;
  color: #495057;
  line-height: 1.7;
  margin: 0;
}
.faq-a a {
  color: #0d6efd;
  text-decoration: none;
}
.faq-a a:hover {
  text-decoration: underline;
}

/* --------------------------------------------------------------------------
   7. Post page — prev/next
   -------------------------------------------------------------------------- */

.post-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  justify-content: space-between;
  margin-top: 2.25rem;
  padding-top: 1.1rem;
  border-top: 1px solid #e9ecef;
  font-size: 0.85rem;
}
.post-nav > div {
  max-width: 32ch;
}
.post-nav span {
  display: block;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.78rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: #adb5bd;
  margin-bottom: 0.2rem;
}
.post-nav a {
  color: #0d6efd;
  text-decoration: none;
  line-height: 1.45;
}
.post-nav a:hover {
  text-decoration: underline;
}

/* --------------------------------------------------------------------------
   8. Small screens + motion + print
   -------------------------------------------------------------------------- */

@media (max-width: 575.98px) {
  .post-title {
    font-size: 1.5rem;
  }
  .post-hero .container {
    padding-block: 1.4rem 1.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .post-card,
  .chip {
    transition: none;
  }
  .post-card:hover {
    transform: none;
  }
}

@media print {
  .navbar,
  .post-nav,
  .filter-row {
    display: none !important;
  }
  .post-hero {
    background: none;
    border: 0;
  }
  .post-body {
    max-width: none;
  }
  a {
    text-decoration: none;
    color: #000 !important;
  }
}