/* ============================================================================
   aidemo blog — editorial stylesheet
   ----------------------------------------------------------------------------
   Editorial design (serif reading column, drop cap, accent rules, hairline
   tables, sticky TOC) ported from the BurnWeek blog, re-tokened to the aidemo
   landing-page palette (warm paper + terracotta). No web fonts — pure system
   stacks. Forced light theme.

   Brand swap = edit the token block below, nothing else.
   ========================================================================== */

/* ---- Design tokens ------------------------------------------------------ */
:root {
  color-scheme: light;

  /* Type — serif for reading, sans for furniture (byline/eyebrow/TOC/meta). */
  --blog-serif: Charter, "Iowan Old Style", "Palatino Linotype", Palatino,
    "Book Antiqua", Georgia, Cambria, "Times New Roman", serif;
  --blog-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif;
  --blog-mono: ui-monospace, SFMono-Regular, Menlo, Consolas,
    "Liberation Mono", monospace;

  /* Color */
  --brand: #1d232b;        /* dark ink — headings, links (landing --text) */
  --accent: #d97757;       /* terracotta — eyebrows, rules, markers (landing --accent) */
  --accent-tint: #faf1ec;  /* warm hover/active wash */
  --blog-ink: #1d232b;     /* body text */
  --dek: #4b4b4b;          /* standfirst */
  --muted: #5b6572;        /* meta, captions (landing --muted) */
  --border: #e4e0d8;       /* hairlines (landing --border) */
  --surface: #fbfaf8;      /* warm paper (landing --bg) */
  --surface-2: #f3f1ec;    /* card wash (landing --bg-soft) */
  --code-bg: #f6f4ee;      /* code panel — between paper and card wash */
  --shadow: rgba(17, 17, 17, 0.08);

  /* Layout */
  --blog-measure: 42rem;   /* ~68ch reading column */
  --page-max: 1200px;
}

/* ---- Base ---------------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--blog-sans);
  color: var(--blog-ink);
  background: var(--surface);
}

img { max-width: 100%; height: auto; }

/* ---- Site header --------------------------------------------------------- */
.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.site-header-inner {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 14px 16px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
}

.site-logo {
  font-family: var(--blog-sans);
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--brand);
  text-decoration: none;
}

.site-logo em {
  font-style: normal;
  color: var(--accent);
}

.site-nav {
  display: flex;
  gap: 18px;
}

.site-nav a {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--muted);
  text-decoration: none;
}

.site-nav a:hover { color: var(--accent); }

/* ---- Blog index page ------------------------------------------------------ */
.blog-page {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 24px 16px;
}

.blog-header { margin-bottom: 24px; }

.blog-header h1 {
  font-family: var(--blog-serif);
  font-size: 2rem;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--brand);
}

.blog-header p {
  margin: 0;
  font-size: 1rem;
  color: var(--muted);
  max-width: var(--blog-measure);
}

/* Cluster nav — pill tabs */
.blog-category-tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
  margin-bottom: 24px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.blog-category-tabs::-webkit-scrollbar { display: none; }

.blog-category-tab {
  padding: 8px 16px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  text-decoration: none;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
  color: var(--muted);
}

.blog-category-tab:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.blog-category-tab.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* Featured (latest) article */
.blog-featured { margin-bottom: 32px; }

.blog-featured-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 8px var(--shadow);
  text-decoration: none;
  color: inherit;
}

.blog-featured-image {
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.blog-featured-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

.blog-featured-card:hover .blog-featured-image img { transform: scale(1.05); }

.blog-featured-content {
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.blog-featured-category {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}

.blog-featured-title {
  font-family: var(--blog-serif);
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 12px;
  color: var(--brand);
  line-height: 1.3;
}

.blog-featured-excerpt {
  color: var(--muted);
  margin: 0 0 16px;
  line-height: 1.6;
}

.blog-featured-meta {
  display: flex;
  gap: 16px;
  color: var(--muted);
  font-size: 14px;
}

/* Card grid */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

.article-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 8px var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
  text-decoration: none;
  color: inherit;
  display: block;
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px var(--shadow);
}

.article-card-image {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--surface-2);
}

.article-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

.article-card:hover .article-card-image img { transform: scale(1.05); }

/* No-image variant — tinted wash + topic lockup. Never a broken img. */
.article-card-image--noimg,
.blog-featured-image--noimg {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--accent-tint) 0%, #fff 130%);
  aspect-ratio: 16 / 9;
}

.article-card-image--noimg .noimg-topic,
.blog-featured-image--noimg .noimg-topic {
  font-family: var(--blog-sans);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.4rem 1rem;
  border: 1px solid rgba(255, 107, 53, 0.35);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.75);
}

.article-card-content { padding: 16px; }

.article-card-category {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}

.article-card-title {
  font-family: var(--blog-serif);
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--brand);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card-excerpt {
  font-size: 14px;
  color: var(--muted);
  margin: 0 0 12px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card-meta {
  display: flex;
  gap: 12px;
  color: var(--muted);
  font-size: 13px;
}

/* ---- Hub (cluster) pages --------------------------------------------------- */
.hub-header { margin-bottom: 24px; }

.hub-header .hub-eyebrow {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.6rem;
}

.hub-header h1 {
  font-family: var(--blog-serif);
  font-size: 2rem;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--brand);
}

.hub-header p {
  margin: 0;
  color: var(--dek);
  font-family: var(--blog-serif);
  font-size: 1.1rem;
  line-height: 1.55;
  max-width: var(--blog-measure);
}

.hub-section-title {
  font-family: var(--blog-sans);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  border-top: 1px solid var(--border);
  padding-top: 0.9rem;
  margin: 2rem 0 1rem;
}

/* ---- Article page ----------------------------------------------------------
   The editorial reading experience: serif for reading, sans for furniture,
   drop cap, accent section rules, hairline tables. */
.article-page {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 24px 16px;
}

/* Two-column layout: reading column + sticky sidebar */
.article-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 48px;
  align-items: start;
}

.article-main { min-width: 0; }

/* Breadcrumb */
.article-breadcrumb {
  font-family: var(--blog-sans);
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 16px;
}

.article-breadcrumb a {
  color: var(--muted);
  text-decoration: none;
}

.article-breadcrumb a:hover { color: var(--accent); }

.article-breadcrumb .sep { margin: 0 6px; opacity: 0.6; }

/* Header: eyebrow → title → dek → hairline meta strip */
.article-header {
  max-width: var(--blog-measure);
  margin-bottom: 24px;
}

.article-category {
  font-family: var(--blog-sans);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 1rem;
  text-decoration: none;
}

.article-category::after {
  content: "";
  height: 1px;
  width: 2.4rem;
  background: var(--accent);
  opacity: 0.55;
}

.article-title {
  font-family: var(--blog-serif);
  font-size: clamp(2.1rem, 4.6vw, 3rem);
  font-weight: 700;
  line-height: 1.07;
  letter-spacing: -0.015em;
  color: var(--brand);
  margin: 0 0 0.9rem;
}

/* Standfirst / dek */
.article-dek {
  font-family: var(--blog-serif);
  font-size: 1.3rem;
  line-height: 1.5;
  color: var(--dek);
  margin: 0 0 1.1rem;
  max-width: var(--blog-measure);
}

.article-meta {
  font-family: var(--blog-sans);
  font-size: 0.82rem;
  letter-spacing: 0.015em;
  color: var(--muted);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 0.7rem 0;
  margin-top: 1.1rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1rem;
}

.article-meta .dot { margin: 0 8px; opacity: 0.55; }

.article-meta-line a {
  color: var(--brand);
  font-weight: 600;
  text-decoration: none;
}

.article-meta-line a:hover {
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 2px;
}

/* Evidence badge — quiet trust pill anchoring to the numbered sources. */
.article-badge {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #b04a1e;
  background: var(--accent-tint);
  border: 1px solid rgba(255, 107, 53, 0.35);
  border-radius: 999px;
  padding: 0.28rem 0.75rem;
  text-decoration: none;
  white-space: nowrap;
}

.article-badge:hover { border-color: var(--accent); }

/* Hero — bleeds wider than the reading column (fills the grid column) so the
   page has one confident editorial beat before settling into the measure. */
.article-hero {
  margin: 0 0 32px;
}

.article-hero img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
  border-radius: 4px;
}

.article-hero figcaption {
  font-family: var(--blog-sans);
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--muted);
  padding: 0.55rem 0.1rem 0;
  max-width: var(--blog-measure);
}

/* Body: serif, capped measure, generous leading */
.article-content {
  max-width: var(--blog-measure);
  font-family: var(--blog-serif);
  font-size: 1.16rem;
  line-height: 1.66;
  letter-spacing: 0.003em;
  color: var(--blog-ink);
  text-wrap: pretty;
}

.article-content p { margin: 0 0 1.2rem; }

.article-content h2 {
  font-family: var(--blog-serif);
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--brand);
  margin: 2.2rem 0 0.8rem;
}

/* Short accent rule above each section — quiet editorial structure. */
.article-content h2::before {
  content: "";
  display: block;
  width: 2.2rem;
  height: 3px;
  border-radius: 2px;
  background: var(--accent);
  margin-bottom: 1rem;
}

.article-content h3 {
  font-family: var(--blog-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--brand);
  margin: 1.6rem 0 0.5rem;
}

/* FAQ — question headings become a tight, divided Q&A list. */
.article-content h3.blog-faq-q {
  border-top: 1px solid var(--border);
  margin: 0;
  padding-top: 1rem;
  font-size: 1.12rem;
  font-weight: 700;
}

.article-content h3.blog-faq-q + p {
  margin: 0.25rem 0 1rem;
  line-height: 1.5;
  font-size: 1.02rem;
  color: #333;
}

/* Prose links — brand ink with a confident accent underline. */
.article-content a:not([class]) {
  color: var(--brand);
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 2px;
  text-underline-offset: 2px;
}

.article-content a:not([class]):hover { background: var(--accent-tint); }

.article-content ul,
.article-content ol {
  margin: 0 0 1.5rem;
  padding-left: 1.5rem;
}

.article-content li { margin-bottom: 0.5rem; }
.article-content ul li::marker { color: var(--accent); }

/* Pull-quote — large serif, accent rule, no italic/box. */
.article-content blockquote {
  font-family: var(--blog-serif);
  font-size: 1.5rem;
  line-height: 1.42;
  font-style: normal;
  font-weight: 500;
  color: var(--brand);
  background: none;
  border: none;
  border-left: 4px solid var(--accent);
  margin: 2.2rem 0;
  padding: 0.3rem 0 0.3rem 1.6rem;
}

.article-content blockquote p { margin: 0; }

/* Hairline editorial table — no boxy borders. */
.table-scroll {
  overflow-x: auto;
  margin: 1.5rem 0;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--blog-sans);
  font-size: 0.95rem;
  border: none;
}

.article-content th {
  background: none;
  border: none;
  border-bottom: 2px solid var(--brand);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--muted);
  padding: 0.55rem 0.8rem;
  text-align: left;
}

.article-content td {
  border: none;
  border-bottom: 1px solid var(--border);
  padding: 0.7rem 0.8rem;
  text-align: left;
}

.article-content tbody tr:hover { background: var(--accent-tint); }

/* ---- Code ------------------------------------------------------------------
   Highlighting is baked at build time (shiki, one-light re-based onto the
   warm panel) — token colors arrive inline, so this styles only the chrome:
   hairline container, tinted panel, language chip + copy button top-right.
   Wide code scrolls inside the block, never the page. */
.article-content .code-block {
  position: relative;
  max-width: var(--blog-measure);
  margin: 1.7rem 0;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--code-bg);
  overflow: hidden;
}

.article-content .code-block pre {
  margin: 0;
  padding: 0.95rem 1.15rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  font-family: var(--blog-mono);
  font-size: 0.84rem;
  line-height: 1.6;
  color: var(--blog-ink);
}

.article-content .code-block code {
  font-family: inherit;
  font-size: inherit;
  background: none;
  padding: 0;
  color: inherit;
}

/* Floating top-right bar (chip + copy) on a solid wash of the panel color,
   so long first lines scroll under it cleanly. */
.code-block-bar {
  position: absolute;
  top: 6px;
  right: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 2px 2px 2px 9px;
  border-radius: 6px;
  background: var(--code-bg);
}

.code-lang {
  font-family: var(--blog-sans);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  user-select: none;
}

.code-copy {
  font-family: var(--blog-sans);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--muted);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 3px 9px;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}

.code-copy:hover,
.code-copy.copied {
  color: var(--accent);
  border-color: var(--accent);
}

/* Inline code — mono on the tinted wash. */
.article-content code {
  font-family: var(--blog-mono);
  font-size: 0.82em;
  background: var(--surface-2);
  border-radius: 4px;
  padding: 0.12em 0.38em;
  color: var(--brand);
}

/* ---- Key takeaways — answer-first summary card ---------------------------- */
.article-takeaways {
  max-width: var(--blog-measure);
  background: var(--accent-tint);
  border: 1px solid rgba(255, 107, 53, 0.28);
  border-radius: 8px;
  padding: 1.15rem 1.4rem 0.9rem;
  margin: 0 0 2rem;
}

.article-takeaways-title {
  font-family: var(--blog-sans);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 0.7rem;
}

.article-takeaways-title::after {
  content: "";
  height: 1px;
  width: 2.4rem;
  background: var(--accent);
  opacity: 0.55;
}

.article-takeaways ul {
  margin: 0;
  padding-left: 1.2rem;
}

.article-takeaways li {
  font-family: var(--blog-serif);
  font-size: 1.02rem;
  line-height: 1.5;
  color: var(--blog-ink);
  margin-bottom: 0.55rem;
}

.article-takeaways li::marker { color: var(--accent); }

/* ---- Numbered citations ----------------------------------------------------
   Superscript [n] anchors instead of mid-sentence off-site exits. */
.article-cite {
  font-family: var(--blog-sans);
  font-size: 0.68em;
  line-height: 0;
  margin-left: 0.08em;
}

.article-cite a {
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
  padding: 0 0.14em;
}

.article-cite a:hover {
  background: var(--accent-tint);
  border-radius: 3px;
}

.article-cite a::before { content: "["; }
.article-cite a::after { content: "]"; }

/* Numbered sources list — anchor targets for the [n] superscripts. */
.article-content .article-sources {
  font-family: var(--blog-sans);
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--muted);
  padding-left: 1.5rem;
}

.article-content .article-sources li {
  margin-bottom: 0.6rem;
  scroll-margin-top: 24px;
}

.article-content .article-sources li:target {
  background: var(--accent-tint);
  border-radius: 4px;
}

.article-content .article-sources li::marker {
  color: var(--accent);
  font-weight: 700;
}

.article-content .article-sources a {
  color: var(--brand);
  text-decoration: none;
}

.article-content .article-sources a:hover {
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 2px;
}

/* Anchor targets land clear of the viewport edge. */
.article-content h2[id],
.article-content h3[id] { scroll-margin-top: 24px; }

/* Hover ¶-style anchors on section headings. */
.hanchor {
  font-family: var(--blog-sans);
  font-weight: 400;
  font-size: 0.8em;
  margin-left: 0.4em;
  color: var(--muted);
  text-decoration: none;
  opacity: 0;
  transition: opacity 0.15s;
}

h2:hover .hanchor,
h3:hover .hanchor,
.hanchor:focus-visible { opacity: 0.75; }

.hanchor:hover { color: var(--accent); opacity: 1; }

/* ---- Mobile TOC (collapsible) — sidebar is hidden under 900px -------------- */
.article-toc-mobile { display: none; }

/* ---- Reading progress bar --------------------------------------------------- */
.article-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 60;
  pointer-events: none;
}

.article-progress-fill {
  height: 100%;
  width: 0;
  background: var(--accent);
}

/* AI disclosure */
.article-ai-disclosure {
  font-family: var(--blog-sans);
  font-size: 0.8rem;
  color: #888;
  font-style: italic;
  max-width: var(--blog-measure);
  margin: 32px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.article-ai-disclosure a {
  color: var(--muted);
  font-style: normal;
  font-weight: 600;
  text-decoration: none;
}

.article-ai-disclosure a:hover { color: var(--accent); }

/* Tags */
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
  max-width: var(--blog-measure);
}

.article-tag {
  font-family: var(--blog-sans);
  padding: 6px 12px;
  background: var(--surface-2);
  border-radius: 16px;
  font-size: 13px;
  color: var(--muted);
}

/* ---- Sidebar: sticky TOC ----------------------------------------------------
   De-boxed: a quiet hairline rail (docs-style), not a grey panel. The active
   item paints an accent marker over the rail. */
.article-sidebar {
  position: sticky;
  top: 40px;
  max-height: calc(100vh - 80px);
  overflow-y: auto;
  padding: 0.2rem 0 0.2rem 18px;
  border-left: 1px solid var(--border);
  font-size: 0.9rem;
}

.article-toc-title {
  font-family: var(--blog-sans);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--muted);
  margin: 0 0 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.article-toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.article-toc-item {
  position: relative;
  margin-bottom: 0.1rem;
}

.article-toc-link {
  display: block;
  padding: 0.32rem 0;
  color: var(--muted);
  text-decoration: none;
  font-family: var(--blog-sans);
  font-size: 0.85rem;
  line-height: 1.4;
  transition: color 0.15s;
}

.article-toc-link:hover { color: var(--blog-ink); }

.article-toc-item.active .article-toc-link {
  color: var(--brand);
  font-weight: 600;
}

/* Accent marker sits on the rail (container padding-left is 18px, rail is 1px). */
.article-toc-item.active::before {
  content: "";
  position: absolute;
  left: -19px;
  top: 0.35rem;
  bottom: 0.35rem;
  width: 2px;
  background: var(--accent);
  border-radius: 1px;
}

/* ---- Related articles ("Keep reading") -------------------------------------- */
.related-articles {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.related-articles h2 {
  font-family: var(--blog-serif);
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0 0 24px;
  color: var(--brand);
}

.related-articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* ---- Waiting-list CTA banner (templates/banner.html) -----------------------
   Editorial card: accent-tint wash, hairline frame, sans eyebrow, serif title.
   Injected on article pages (before "Keep reading") and index/hub pages. */
.blog-cta {
  max-width: var(--blog-measure);
  margin: 2.4rem 0 0;
  padding: 1.5rem 1.7rem 1.3rem;
  background: var(--accent-tint);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.blog-cta-eyebrow {
  font-family: var(--blog-sans);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}

.blog-cta-eyebrow::after {
  content: "";
  height: 1px;
  width: 2.4rem;
  background: var(--accent);
  opacity: 0.55;
}

.blog-cta-title {
  font-family: var(--blog-serif);
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--brand);
  margin: 0.6rem 0 0.4rem;
}

.blog-cta-lede {
  font-family: var(--blog-serif);
  font-size: 1.02rem;
  line-height: 1.55;
  color: var(--dek);
  margin: 0 0 1rem;
}

.blog-cta-form {
  display: flex;
  gap: 10px;
}

.blog-cta-form input[type="email"] {
  flex: 1 1 auto;
  min-width: 0;
  font-family: var(--blog-sans);
  font-size: 0.95rem;
  color: var(--blog-ink);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 12px;
}

.blog-cta-form input[type="email"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.18);
}

.blog-cta-form button {
  font-family: var(--blog-sans);
  font-size: 0.9rem;
  font-weight: 700;
  color: #fff;
  background: var(--accent);
  border: none;
  border-radius: 6px;
  padding: 10px 18px;
  cursor: pointer;
  white-space: nowrap;
  transition: filter 0.15s;
}

.blog-cta-form button:hover { filter: brightness(0.94); }
.blog-cta-form button:disabled { opacity: 0.6; cursor: default; }

/* Link-button row for the static CTA banner (no form). */
.blog-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 4px;
}

.blog-cta-actions a {
  display: inline-block;
  padding: 11px 20px;
  border-radius: 8px;
  font-family: var(--blog-sans);
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
  border: 1px solid transparent;
}

.blog-cta-actions a.primary {
  background: var(--accent);
  color: #fff;
}

.blog-cta-actions a.primary:hover { filter: brightness(0.94); }

.blog-cta-actions a.secondary {
  background: transparent;
  color: var(--brand);
  border-color: var(--border);
}

.blog-cta-actions a.secondary:hover { background: var(--accent-tint); }

.blog-cta-code {
  display: inline-block;
  margin-top: 10px;
  padding: 8px 12px;
  border-radius: 6px;
  background: rgba(29, 35, 43, 0.06);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.85rem;
  color: var(--brand);
}

/* Honeypot — visually hidden, still in the accessibility-invisible DOM. */
.blog-cta-hp {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.blog-cta-msg {
  font-family: var(--blog-sans);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--brand);
  min-height: 1.2em;
  margin: 0.6rem 0 0;
}

.blog-cta-fine {
  font-family: var(--blog-sans);
  font-size: 0.8rem;
  color: var(--muted);
  margin: 0.5rem 0 0;
}

@media (max-width: 600px) {
  .blog-cta-form { flex-direction: column; }
  .blog-cta-form button { width: 100%; }
}

/* ---- Footer -------------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 48px;
}

.site-footer-inner {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 24px 16px;
  font-family: var(--blog-sans);
  font-size: 0.85rem;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  align-items: baseline;
  justify-content: space-between;
}

.site-footer-col {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.site-footer-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
}

.site-footer-topics a { font-weight: 500; }

.site-footer a {
  color: var(--brand);
  text-decoration: none;
  font-weight: 600;
}

.site-footer a:hover {
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 2px;
}

.site-footer-links { display: flex; gap: 18px; }

/* ---- Responsive ------------------------------------------------------------ */
@media (max-width: 1024px) {
  .blog-grid,
  .related-articles-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .article-layout {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .article-sidebar { display: none; }

  /* Collapsible TOC replaces the sidebar on narrow viewports. */
  .article-toc-mobile {
    display: block;
    margin: 0 0 24px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-family: var(--blog-sans);
    max-width: var(--blog-measure);
  }

  .article-toc-mobile summary {
    padding: 0.7rem 1rem;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--brand);
    cursor: pointer;
  }

  .article-toc-mobile ul {
    list-style: none;
    margin: 0;
    padding: 0 1rem 0.8rem;
  }

  .article-toc-mobile .article-toc-link { padding: 0.34rem 0; }
}

@media (max-width: 768px) {
  .blog-header h1 { font-size: 1.5rem; }
  .blog-featured-card { grid-template-columns: 1fr; }
  .blog-featured-content { padding: 16px; }
  .blog-grid,
  .related-articles-grid { grid-template-columns: 1fr; }

  .article-content { font-size: 1.1rem; line-height: 1.7; }
  .article-dek { font-size: 1.15rem; }
  .article-content h2 { font-size: 1.45rem; }
  .article-content blockquote { font-size: 1.25rem; }
}