/* ==========================================================================
   /ecommerce-seo-guide/  (the long-form guide)
   Replaces the <style> block that lived inside the page. Scoped to .rc-diag
   (the page's own wrapper class). Direction 2: warm-white sheet, ink text,
   blue as line and stamp, hairlines instead of tinted panels, square corners,
   Newsreader + IBM Plex Mono. Every layout rule that makes the page work
   (timeline, pillars, case cards, mistakes grid, FAQ) is kept.
   Loaded only on this page (functions.php, by slug), after roicraft.css.
   ========================================================================== */

.rc-diag * { box-sizing: border-box; margin: 0; padding: 0; }
.rc-diag {
  font-family: var(--rc-serif);
  font-size: 19px;
  line-height: 1.5;
  color: var(--rc-ink);
  background: transparent;
  max-width: 860px;
  margin: 0 auto;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* Body copy */
.rc-diag p { font-size: 19px; line-height: 1.55; color: var(--rc-ink); margin-bottom: 20px; max-width: none; text-align: left; }
.rc-diag ul { font-size: 19px; padding-left: 22px; line-height: 1.55; margin-bottom: 20px; }
.rc-diag li { margin-bottom: 10px; color: var(--rc-ink); }
.rc-diag strong { font-weight: 500; }
.rc-diag em { font-style: italic; }
.rc-diag hr { border: none; border-top: 1px solid var(--rc-ink); margin: 48px 0; opacity: 1; }
.rc-diag figure { margin: 28px 0; }
.rc-diag img { max-width: 100%; height: auto; border-radius: 0; display: block; margin: 0 auto; }
.rc-diag a:not(.rc-btn) { color: var(--rc-ink); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
.rc-diag a:not(.rc-btn):hover { color: var(--rc-blue); }

/* Headings: serif, regular weight, sizes from the theme scale */
.rc-diag h2 { font-family: var(--rc-serif) !important; font-size: clamp(32px, 3.2vw, 44px); font-weight: 400 !important; line-height: 1.1; letter-spacing: -0.02em; color: var(--rc-ink); margin-top: 52px; margin-bottom: 18px; scroll-margin-top: 90px; text-wrap: pretty; }
.rc-diag h3 { font-family: var(--rc-serif) !important; font-size: 27px; font-weight: 400 !important; line-height: 1.15; color: var(--rc-ink); margin-top: 36px; margin-bottom: 12px; }
.rc-diag h4 { font-family: var(--rc-serif) !important; font-size: 21px; font-weight: 400 !important; line-height: 1.3; color: var(--rc-ink-70); font-style: italic; margin-top: 22px; margin-bottom: 8px; }
.rc-diag h2 strong, .rc-diag h3 strong, .rc-diag h4 strong { font-weight: 400; }

/* Small labels: mono, tracked, uppercase */
.rc-diag .rc-eyebrow, .rc-diag .rc-htag, .rc-diag .rc-tldr-tag, .rc-diag .rc-toc-tag,
.rc-diag .rc-case-tag, .rc-diag .rc-cs-label, .rc-diag .rc-pill, .rc-diag .rc-tl-period,
.rc-diag .rc-pnum, .rc-diag .rc-mnum, .rc-diag .rc-diy-tag, .rc-diag .rc-toc-list li::before,
.rc-diag .rc-byline {
  font-family: var(--rc-mono);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* ── Hero: no dark band. Eyebrow, standfirst, byline, tags, then a rule. ── */
.rc-diag .rc-hero { background: transparent; border-radius: 0; padding: 0 0 36px; position: relative; overflow: visible; margin-bottom: 0; border-bottom: 1px solid var(--rc-ink); }
.rc-diag .rc-hero::before, .rc-diag .rc-hero::after { content: none; }
.rc-diag .rc-eyebrow { font-size: 11px; color: var(--rc-blue); margin-bottom: 22px; display: flex; align-items: center; gap: 12px; }
.rc-diag .rc-eyebrow::after { content: ''; width: 40px; height: 1px; background: var(--rc-blue); opacity: 1; border-radius: 0; }
.rc-diag .rc-hero h2 { font-size: clamp(26px, 2.8vw, 36px); font-weight: 400 !important; line-height: 1.2; letter-spacing: -0.015em; color: var(--rc-ink); margin-top: 0; margin-bottom: 16px; max-width: 30em; }
.rc-diag .rc-byline { font-size: 11px; color: var(--rc-ink-55); margin-bottom: 0; }
.rc-diag .rc-byline em { font-style: normal; }
.rc-diag .rc-hero-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.rc-diag .rc-htag { font-size: 10.5px; color: var(--rc-ink-70); border: 1px solid var(--rc-rule); border-radius: 0; padding: 6px 10px; }

/* ── Trust strip ── */
.rc-diag .rc-trust { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 12px 22px; padding: 16px 22px; background: var(--rc-paper); border: 1px solid var(--rc-rule); border-radius: 0; margin: 28px 0 0; }
.rc-diag .rc-trust-byline { font-size: 16px; color: var(--rc-ink-70); line-height: 1.4; flex-shrink: 0; }
.rc-diag .rc-trust-byline strong { color: var(--rc-ink); font-weight: 500; }
.rc-diag .rc-trust-divider-v { width: 1px; height: 18px; background: var(--rc-rule); flex-shrink: 0; }
.rc-diag .rc-trust-points { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 10px 18px; }
.rc-diag .rc-trust-item { font-size: 16px; color: var(--rc-ink-70); line-height: 1.4; }
.rc-diag .rc-trust-item strong { color: var(--rc-ink); font-weight: 500; }
.rc-diag .rc-trust-divider { width: 4px; height: 4px; background: var(--rc-ink-55); border-radius: 0; flex-shrink: 0; }

/* ── Key takeaways: paper, blue rule on the left ── */
.rc-diag .rc-tldr { background: var(--rc-paper); border: 1px solid var(--rc-rule); border-left: 3px solid var(--rc-blue); border-radius: 0; padding: 26px 30px; margin: 28px 0 0; }
.rc-diag .rc-tldr-tag { font-size: 11px; color: var(--rc-blue); margin-bottom: 16px; }
.rc-diag .rc-tldr-list { list-style: none; padding: 0; margin: 0; font-size: 17px; }
.rc-diag .rc-tldr-list li { position: relative; padding-left: 22px; font-size: 17px; line-height: 1.5; color: var(--rc-ink-70); margin-bottom: 12px; }
.rc-diag .rc-tldr-list li:last-child { margin-bottom: 0; }
.rc-diag .rc-tldr-list li::before { content: ''; position: absolute; left: 0; top: 10px; width: 7px; height: 7px; background: var(--rc-blue); border-radius: 0; }
.rc-diag .rc-tldr-list li strong { color: var(--rc-ink); font-weight: 500; }

/* ── Contents ── */
.rc-diag .rc-toc { background: var(--rc-paper); border: 1px solid var(--rc-rule); border-radius: 0; padding: 24px 28px; margin: 18px 0 0; }
.rc-diag .rc-toc-tag { font-size: 11px; color: var(--rc-ink-55); margin-bottom: 14px; }
.rc-diag .rc-toc-list { list-style: none; counter-reset: toc; padding: 0; margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 8px 24px; }
.rc-diag .rc-toc-list li { counter-increment: toc; padding-left: 30px; position: relative; margin-bottom: 0; font-size: 17px; line-height: 1.45; }
.rc-diag .rc-toc-list li::before { content: counter(toc, decimal-leading-zero); position: absolute; left: 0; top: 3px; font-size: 11px; color: var(--rc-blue); }
.rc-diag .rc-toc-list a { color: var(--rc-ink); text-decoration: none !important; font-weight: 400; border-bottom: 1px solid transparent; transition: border-color 0.15s, color 0.15s; }
.rc-diag .rc-toc-list a:hover { border-bottom-color: var(--rc-blue); color: var(--rc-blue); }

/* ── Stat strip: a rule above and below, the number in blue ── */
.rc-diag .rc-stat { display: flex; align-items: stretch; background: transparent; border-top: 1px solid var(--rc-ink); border-bottom: 1px solid var(--rc-ink); border-radius: 0; overflow: visible; margin: 32px 0; }
.rc-diag .rc-stat-stripe { width: 3px; background: var(--rc-blue); flex-shrink: 0; }
.rc-diag .rc-stat-inner { display: flex; align-items: center; gap: 22px; padding: 22px 26px; flex: 1; flex-wrap: wrap; }
.rc-diag .rc-stat-big { font-family: var(--rc-serif); font-size: 56px; font-weight: 400; color: var(--rc-blue); line-height: 1; flex-shrink: 0; letter-spacing: -0.03em; }
.rc-diag .rc-stat-text { flex: 1; min-width: 160px; }
.rc-diag .rc-stat-text strong { display: block; font-size: 18px; font-weight: 500; color: var(--rc-ink); margin-bottom: 4px; line-height: 1.35; }
.rc-diag .rc-stat-text span { font-size: 15px; color: var(--rc-ink-70); line-height: 1.5; }

/* ── Case cards ── */
.rc-diag .rc-case { margin: 36px 0; border-radius: 0; overflow: hidden; border: 1px solid var(--rc-ink); background: var(--rc-paper); }
.rc-diag .rc-case-tag { display: flex; align-items: center; gap: 8px; padding: 12px 22px; background: var(--rc-ground); border-bottom: 1px solid var(--rc-ink); font-size: 10.5px; color: var(--rc-blue); }
.rc-diag .rc-case-tag svg { width: 14px; height: 14px; }
.rc-diag .rc-case-tag em { font-style: normal; color: var(--rc-ink-70); margin-left: 4px; }
.rc-diag .rc-case-stats { display: flex; align-items: center; padding: 22px 24px 6px; flex-wrap: wrap; background: var(--rc-paper); }
.rc-diag .rc-cs-block { text-align: center; }
.rc-diag .rc-cs-label { font-size: 10.5px; color: var(--rc-ink-55); display: block; margin-bottom: 6px; }
.rc-diag .rc-cs-val { font-family: var(--rc-serif); font-size: 44px; font-weight: 400; line-height: 1; letter-spacing: -0.03em; display: block; }
.rc-diag .rc-cs-meta { font-size: 14px; color: var(--rc-ink-55); display: block; margin-top: 6px; }
.rc-diag .rc-cs-before .rc-cs-val { color: var(--rc-ink-55); text-decoration: line-through; text-decoration-thickness: 1px; }
.rc-diag .rc-cs-after .rc-cs-val { color: var(--rc-blue); }
.rc-diag .rc-cs-arrow { font-family: var(--rc-serif); font-size: 28px; color: var(--rc-ink-55); padding: 0 18px; align-self: flex-end; margin-bottom: 14px; flex-shrink: 0; }
.rc-diag .rc-case-body { padding: 16px 24px 4px; background: var(--rc-paper); }
.rc-diag .rc-case-body p { font-size: 17px; line-height: 1.5; color: var(--rc-ink-70); margin-bottom: 14px; }
.rc-diag .rc-case-body p:last-child { margin-bottom: 0; }
.rc-diag .rc-case-footer { display: flex; align-items: center; gap: 8px; padding: 14px 24px 20px; flex-wrap: wrap; background: var(--rc-paper); }
.rc-diag .rc-pill { font-size: 10px; color: var(--rc-blue); background: transparent; border: 1px solid var(--rc-blue); padding: 5px 9px; border-radius: 0; }

/* ── Inline form panel ── */
.rc-diag .rc-form { border: 1px solid var(--rc-ink); border-radius: 0; background: var(--rc-paper); padding: 36px 40px; margin: 44px 0; text-align: center; }
.rc-diag .rc-form h3 { font-size: 27px; font-weight: 400 !important; color: var(--rc-ink); margin-top: 0; margin-bottom: 12px; line-height: 1.15; }
.rc-diag .rc-form p { font-size: 17px; color: var(--rc-ink-70); margin-bottom: 22px; line-height: 1.5; text-align: center; }
.rc-diag .rc-form form, .rc-diag .rc-form iframe, .rc-diag .rc-form .formkit-form, .rc-diag .rc-form > div { margin-left: auto !important; margin-right: auto !important; display: block; }

/* ── Notice ── */
.rc-diag .rc-notice { display: flex; align-items: center; gap: 12px; padding: 14px 18px; background: var(--rc-paper); border: 1px solid var(--rc-rule); border-left: 3px solid var(--rc-blue); border-radius: 0; margin: 24px 0; font-size: 16px; color: var(--rc-ink); line-height: 1.5; }
.rc-diag .rc-notice strong { color: var(--rc-ink); font-weight: 500; }

/* ── Timeline: four cells separated by hairlines ── */
.rc-diag .rc-timeline { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--rc-rule); border: 1px solid var(--rc-ink); border-radius: 0; overflow: hidden; margin: 24px 0 28px; }
.rc-diag .rc-tl { background: var(--rc-paper); padding: 22px 18px; }
.rc-diag .rc-tl::before { content: ''; display: block; width: 100%; height: 2px; border-radius: 0; margin-bottom: 14px; background: var(--rc-blue); }
.rc-diag .rc-tl:nth-child(1)::before { opacity: 0.25; }
.rc-diag .rc-tl:nth-child(2)::before { opacity: 0.5; }
.rc-diag .rc-tl:nth-child(3)::before { opacity: 0.75; }
.rc-diag .rc-tl:nth-child(4)::before { opacity: 1; }
.rc-diag .rc-tl-period { font-size: 10.5px; color: var(--rc-ink-55); margin-bottom: 8px; }
.rc-diag .rc-tl-growth { font-family: var(--rc-serif); font-size: 32px; font-weight: 400; color: var(--rc-blue); line-height: 1; margin-bottom: 10px; letter-spacing: -0.02em; }
.rc-diag .rc-tl-desc { font-size: 15px; line-height: 1.45; color: var(--rc-ink-70); margin-bottom: 0; }

/* ── Pillars ── */
.rc-diag .rc-pillar { margin: 28px 0; border-radius: 0; overflow: hidden; border: 1px solid var(--rc-ink); background: var(--rc-paper); }
.rc-diag .rc-phead { display: flex; align-items: flex-start; gap: 14px; padding: 20px 24px; background: var(--rc-ground); border-bottom: 1px solid var(--rc-ink); }
.rc-diag .rc-picon { width: 36px; height: 36px; background: var(--rc-paper); border: 1px solid var(--rc-rule); border-radius: 0; display: flex; align-items: center; justify-content: center; font-size: 17px; flex-shrink: 0; margin-top: 2px; }
.rc-diag .rc-picon img.emoji { width: 18px; height: 18px; }
.rc-diag .rc-pmeta { flex: 1; }
.rc-diag .rc-pnum { font-size: 10px; color: var(--rc-ink-55); margin-bottom: 6px; }
.rc-diag .rc-ptitle { font-family: var(--rc-serif); font-size: 24px; font-weight: 400; color: var(--rc-ink); line-height: 1.1; letter-spacing: -0.01em; margin-bottom: 6px; }
.rc-diag .rc-pq { font-size: 16px; font-style: italic; color: var(--rc-ink-70); line-height: 1.4; }
.rc-diag .rc-pbody { padding: 24px 26px; background: var(--rc-paper); }
.rc-diag .rc-pbody p { font-size: 17px; color: var(--rc-ink-70); line-height: 1.5; margin-bottom: 14px; }
.rc-diag .rc-pbody p:last-child { margin-bottom: 0; }

/* ── Mistakes grid ── */
.rc-diag .rc-mistakes { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 24px 0 28px; }
.rc-diag .rc-mistake { padding: 20px 22px; background: var(--rc-paper); border: 1px solid var(--rc-rule); border-top: 2px solid var(--rc-blue); border-radius: 0; box-shadow: none; }
.rc-diag .rc-mnum { font-size: 10px; color: var(--rc-blue); margin-bottom: 8px; }
.rc-diag .rc-mtitle { font-family: var(--rc-serif); font-size: 22px; font-weight: 400; color: var(--rc-ink); margin-bottom: 8px; line-height: 1.15; }
.rc-diag .rc-mbody { font-size: 16px; line-height: 1.5; color: var(--rc-ink-70); margin-bottom: 0; }

/* ── DIY vs expert: two paper cards, ink rule on the first ── */
.rc-diag .rc-diy-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 24px 0; }
.rc-diag .rc-diy-card { border-radius: 0; padding: 26px; position: relative; overflow: visible; background: var(--rc-paper); }
.rc-diag .rc-diy-dark { background: var(--rc-paper); border: 1px solid var(--rc-ink); }
.rc-diag .rc-diy-dark::before { content: none; }
.rc-diag .rc-diy-light { background: var(--rc-paper); border: 1px solid var(--rc-rule); }
.rc-diag .rc-diy-tag { font-size: 10.5px; display: block; margin-bottom: 14px; }
.rc-diag .rc-diy-dark .rc-diy-tag { color: var(--rc-blue); }
.rc-diag .rc-diy-light .rc-diy-tag { color: var(--rc-ink-55); }
.rc-diag .rc-diy-dark p, .rc-diag .rc-diy-light p { font-size: 17px; color: var(--rc-ink-70); line-height: 1.5; }
.rc-diag .rc-diy-dark p strong, .rc-diag .rc-diy-light p strong { color: var(--rc-ink); font-weight: 500; }

/* ── FAQ (Yoast block) ── */
.rc-diag .schema-faq-section { padding: 22px 0; border-bottom: 1px solid var(--rc-rule); }
.rc-diag .schema-faq-section:last-child { border-bottom: none; }
.rc-diag .schema-faq-question { font-family: var(--rc-serif); font-size: 22px; font-weight: 400; color: var(--rc-ink); display: block; margin-bottom: 10px; line-height: 1.25; }
.rc-diag .schema-faq-answer { font-size: 17px; color: var(--rc-ink-70); line-height: 1.5; }

/* ── Author ── */
.rc-diag .rc-author { display: flex; align-items: flex-start; gap: 18px; padding: 24px 26px; background: var(--rc-paper); border: 1px solid var(--rc-rule); border-left: 3px solid var(--rc-blue); border-radius: 0; margin: 32px 0; }
.rc-diag .rc-avatar { width: 56px; height: 56px; border-radius: 0; background: transparent; border: 1px solid var(--rc-blue); display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-family: var(--rc-mono); font-size: 16px; font-weight: 500; letter-spacing: 0.08em; color: var(--rc-blue); }
.rc-diag .rc-author-body { flex: 1; }
.rc-diag .rc-author-body p { font-size: 17px; color: var(--rc-ink-70); line-height: 1.5; margin-bottom: 8px; }
.rc-diag .rc-author-body p:last-child { margin-bottom: 0; }
.rc-diag .rc-author-body p strong { color: var(--rc-ink); font-weight: 500; }

/* ── Closing panel: the sheet (paper, ink rule, offset shadow) ── */
.rc-diag .rc-final { background: var(--rc-paper); border: 1px solid var(--rc-ink); box-shadow: 6px 6px 0 var(--rc-ink); border-radius: 0; padding: 48px 42px; margin: 52px 6px 32px 0; position: relative; overflow: visible; }
.rc-diag .rc-final::before { content: none; }
.rc-diag .rc-final h2 { font-size: clamp(30px, 3vw, 40px); font-weight: 400 !important; color: var(--rc-ink); margin-top: 0; margin-bottom: 22px; line-height: 1.1; letter-spacing: -0.02em; text-align: center; }
.rc-diag .rc-final-body p { font-size: 18px; color: var(--rc-ink-70); line-height: 1.5; margin-bottom: 16px; }
.rc-diag .rc-final-body p strong { color: var(--rc-ink); font-weight: 500; }
.rc-diag .rc-delivs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 22px 0 26px; }
.rc-diag .rc-deliv { display: flex; align-items: flex-start; gap: 10px; padding: 15px 18px; background: var(--rc-ground); border: 1px solid var(--rc-rule); border-radius: 0; }
.rc-diag .rc-deliv-icon { font-size: 16px; flex-shrink: 0; margin-top: 2px; }
.rc-diag .rc-deliv-text { font-size: 16px; line-height: 1.45; color: var(--rc-ink-70); }
.rc-diag .rc-deliv-text strong { font-weight: 500; color: var(--rc-ink); }
.rc-diag .rc-final-close p { font-size: 18px; color: var(--rc-ink-70); line-height: 1.5; margin-bottom: 16px; }
.rc-diag .rc-final-close p strong { color: var(--rc-ink); font-weight: 500; }
.rc-diag .rc-final-btn { text-align: center; margin-top: 8px; }
.rc-diag .rc-btn {
  display: inline-block;
  font-family: var(--rc-serif);
  font-size: 18px;
  font-weight: 500;
  color: #FFFFFF !important;
  background: var(--rc-blue) !important;
  border: 1.5px solid var(--rc-blue);
  text-decoration: none !important;
  padding: 15px 26px;
  border-radius: 0 !important;
  box-shadow: none !important;
  line-height: 1.2;
  transition: background 0.15s, border-color 0.15s;
}
.rc-diag .rc-btn:hover { background: var(--rc-ink) !important; border-color: var(--rc-ink); color: var(--rc-ground) !important; }
.rc-diag .rc-btn strong { font-weight: 500; }
.rc-diag .rc-cv { content-visibility: auto; contain-intrinsic-size: auto 600px; }

/* ── Tablet ── */
@media (max-width: 768px) {
  .rc-diag { font-size: 18px; }
  .rc-diag p, .rc-diag ul { font-size: 18px; line-height: 1.5; }
  .rc-diag h2 { font-size: 30px; }
  .rc-diag h3 { font-size: 24px; }
  .rc-diag .rc-case-body p, .rc-diag .rc-pbody p, .rc-diag .rc-diy-dark p, .rc-diag .rc-diy-light p { font-size: 16.5px; }
  .rc-diag .schema-faq-question { font-size: 21px; }
  .rc-diag .schema-faq-answer { font-size: 16.5px; }
  .rc-diag .rc-tldr-list li { font-size: 16.5px; }
}

/* ── Phone ── */
@media (max-width: 580px) {
  .rc-diag .rc-hero { padding: 0 0 28px; }
  .rc-diag .rc-hero h2 { font-size: 24px; }
  .rc-diag .rc-case-stats { flex-direction: column; align-items: flex-start; gap: 12px; }
  .rc-diag .rc-cs-block { text-align: left; }
  .rc-diag .rc-cs-val { font-size: 38px; }
  .rc-diag .rc-cs-arrow { display: none; }
  .rc-diag .rc-stat-inner { padding: 18px 20px; }
  .rc-diag .rc-stat-big { font-size: 44px; }
  .rc-diag .rc-stat-text strong { font-size: 16.5px; }
  .rc-diag .rc-stat-text span { font-size: 14.5px; }
  .rc-diag .rc-form { padding: 26px 22px; }
  .rc-diag .rc-form h3 { font-size: 24px; }
  .rc-diag .rc-form p { font-size: 16px; }
  .rc-diag .rc-timeline { grid-template-columns: 1fr 1fr; }
  .rc-diag .rc-mistakes { grid-template-columns: 1fr; }
  .rc-diag .rc-diy-grid { grid-template-columns: 1fr; }
  .rc-diag .rc-final { padding: 36px 24px; margin-right: 4px; box-shadow: 4px 4px 0 var(--rc-ink); }
  .rc-diag .rc-final h2 { font-size: 28px; }
  .rc-diag .rc-final-body p, .rc-diag .rc-final-close p { font-size: 17px; }
  .rc-diag .rc-delivs { grid-template-columns: 1fr; }
  .rc-diag .rc-deliv-text { font-size: 15.5px; }
  .rc-diag .rc-author { flex-direction: column; gap: 12px; padding: 20px 22px; }
  .rc-diag .rc-pbody { padding: 20px 22px; }
  .rc-diag .rc-phead { padding: 18px 22px; }
  .rc-diag .rc-case-body, .rc-diag .rc-case-footer, .rc-diag .rc-case-stats { padding-left: 20px; padding-right: 20px; }
  .rc-diag .rc-trust { padding: 14px 18px; gap: 12px 16px; flex-direction: column; }
  .rc-diag .rc-trust-divider-v { display: none; }
  .rc-diag .rc-trust-byline { font-size: 15px; text-align: center; }
  .rc-diag .rc-trust-item { font-size: 15px; }
  .rc-diag .rc-tldr { padding: 22px 22px 22px 24px; }
  .rc-diag .rc-tldr-list li { font-size: 16px; padding-left: 20px; }
  .rc-diag .rc-toc { padding: 20px 22px; }
  .rc-diag .rc-toc-list { grid-template-columns: 1fr; gap: 10px; }
  .rc-diag .rc-btn { display: block; text-align: center; }
}
@media (max-width: 380px) {
  .rc-diag .rc-timeline { grid-template-columns: 1fr; }
}

/* ── Page title (Astra's entry header, outside .rc-diag): same measure as the article ── */
.entry-header { max-width: 860px; margin: 44px auto 0 !important; padding: 0 !important; }
.entry-header .entry-title { font-size: clamp(38px, 4.2vw, 56px) !important; line-height: 1.05; letter-spacing: -0.025em; margin: 0 !important; }
.entry-content > .rc-diag { margin-top: 28px !important; }
@media (max-width: 921px) {
  .entry-header { margin: 28px auto 0 !important; }
  .entry-header .entry-title { font-size: 38px !important; }
}