/* Strata Match — Article page styles (verbatim from handoff) */
  .progress{position:fixed;top:0;left:0;height:3px;width:0;background:var(--terracotta);z-index:60;transition:width .08s linear;}

  /* Editorial column: a readable text measure (~880px outer → ~73ch at 20px)
     that fills the page far better than the old thin strip, with data tables +
     images breaking out wider (see .prose table / figure below). The sticky
     TOC/tools rail was removed 2026-06-03. */
  .art-grid{max-width:960px;margin:0 auto;padding:72px 72px 78px;background:var(--bg-elevated);border:1px solid var(--border);box-shadow:var(--shadow-card);}
  .art-rail{display:none;}
  .rail-inner{position:sticky;top:104px;display:flex;flex-direction:column;gap:26px;}
  .rail-sec{font-family:var(--font-mono);font-size:10px;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--fg-subtle);margin-bottom:12px;}
  .toc{display:flex;flex-direction:column;border-left:1px solid var(--border);}
  .toc a{display:block;padding:9px 0 9px 18px;margin-left:-1px;border-left:2px solid transparent;
    font-size:13.5px;line-height:1.4;color:var(--fg-muted);text-decoration:none;transition:color var(--dur-fast),border-color var(--dur-fast);}
  .toc a:hover{color:var(--ink);}
  .toc a.active{color:var(--accent-text);border-left-color:var(--terracotta);font-weight:var(--w-body-em);}
  .toc a .tnum{font-family:var(--font-mono);font-size:10px;letter-spacing:.08em;color:var(--fg-subtle);display:block;}
  .toc a.active .tnum{color:var(--terracotta);}
  .rail-tools{border:1px solid var(--border);border-top:2px solid var(--navy-600);background:var(--bg-elevated);padding:18px 18px 16px;}
  .rt-link{display:flex;align-items:center;gap:11px;padding:10px 0;text-decoration:none;color:var(--ink);border-bottom:1px solid var(--border);transition:color var(--dur-fast);}
  .rt-link:last-of-type{border-bottom:0;}
  .rt-link:hover{color:var(--accent-text);}
  .rt-link iconify-icon{font-size:20px;color:var(--navy-600);flex:none;}
  .rt-link:hover iconify-icon{color:var(--terracotta);}
  .rt-link .rt-t{font-family:var(--font-display);font-size:16px;line-height:1.1;}
  .rt-link .rt-s{display:block;font-size:12px;color:var(--fg-subtle);margin-top:2px;font-family:var(--font-body);}
  .rt-arrow{margin-left:auto;color:var(--fg-subtle);font-size:15px;}

  /* prose — comfortable editorial measure at the wider column */
  .prose{min-width:0;font-family:var(--font-sans);font-size:18px;line-height:1.68;font-weight:400;letter-spacing:-0.004em;}
  .prose p{font-family:var(--font-sans);font-size:18px;line-height:1.68;color:var(--fg);margin:0 0 22px;}
  .prose p.lead{font-size:21px;line-height:1.55;color:var(--ink);margin-bottom:32px;}
  /* H2 = section break: generous space above, a hairline rule, a calmer size so
     it leads without shouting. The optional .num mono kicker sits above it. */
  .prose h2{position:relative;font-family:var(--font-display);font-size:clamp(32px,3.4vw,44px);line-height:1.04;margin:82px 0 22px;padding-top:38px;border-top:1px solid var(--border);letter-spacing:-0.018em;scroll-margin-top:104px;text-wrap:balance;color:var(--ink);}
  .prose h2::after{content:"";display:block;width:54px;height:2px;margin-top:16px;background:var(--teal-500);}
  .prose h2:first-child{margin-top:0;padding-top:0;border-top:0;}
  .prose h2 .num{font-family:var(--font-mono);font-size:12px;letter-spacing:.2em;color:var(--accent-text);display:block;margin-bottom:10px;}
  .prose .drop::first-letter,
  .prose > p:first-of-type::first-letter{font-family:var(--font-display);float:left;font-size:5.7em;line-height:.72;padding:11px 15px 0 0;color:var(--terracotta);font-style:normal;}
  .prose blockquote{position:relative;margin:58px -24px;padding:40px 46px 42px 104px;background:var(--surface-edit);border:1px solid var(--border);border-top:3px solid var(--terracotta);border-bottom-color:var(--amber-300);
    font-family:var(--font-display);font-style:italic;font-size:clamp(32px,4vw,48px);line-height:1.08;color:var(--ink);box-shadow:var(--shadow-lift);}
  .prose blockquote::before{content:"“";position:absolute;left:32px;top:22px;font-family:var(--font-display);font-size:116px;line-height:.8;color:var(--terracotta);font-style:normal;}
  .prose blockquote p{font:inherit;line-height:inherit;color:inherit;margin:0;}
  .prose ol{margin:0 0 28px;padding-left:0;list-style:none;counter-reset:step;}
  .prose ol li{position:relative;padding:0 0 18px 52px;counter-increment:step;font-size:17.5px;line-height:1.6;color:var(--fg-muted);}
  .prose ol li::before{content:counter(step);position:absolute;left:0;top:-2px;width:36px;height:36px;border-radius:999px;
    background:var(--navy-50);color:var(--navy-700);font-family:var(--font-mono);font-size:14px;font-weight:600;
    display:flex;align-items:center;justify-content:center;}
  .prose ol li b{color:var(--fg);font-weight:var(--w-body-em);}
  /* ── Readability + rhythm rules (apply to EVERY post via shared .prose) ───── */
  /* Editorial opener: the first paragraph leads (larger, ink) so each article has
     a clear "way in" instead of starting as an undifferentiated 20px wall. */
  .prose > p:first-of-type{font-size:20px;line-height:1.62;color:var(--ink);margin-bottom:34px;}
  /* h3 sub-headings were UNSTYLED (browser default) — define the tier so spacing
     and hierarchy are consistent across posts. */
  .prose h3{font-family:var(--font-display);font-size:clamp(24px,2.2vw,30px);line-height:1.08;margin:54px 0 16px;padding-left:18px;border-left:3px solid var(--teal-500);letter-spacing:-0.012em;scroll-margin-top:104px;text-wrap:balance;color:var(--ink);}
  /* Bullet lists were UNSTYLED — give them the same rhythm/measure as numbered. */
  .prose ul{margin:0 0 28px;padding-left:0;list-style:none;}
  .prose ul li{position:relative;padding:0 0 11px 25px;font-size:17.5px;line-height:1.6;color:var(--fg-muted);}
  .prose ul li::before{content:"";position:absolute;left:3px;top:11px;width:6px;height:6px;border-radius:999px;background:var(--teal-500);}
  .prose ul:has(input[type="checkbox"]){display:grid;gap:16px;margin:8px 0 34px;padding:22px 26px;background:var(--navy-50);border:1px solid var(--border);border-left:3px solid var(--teal-500);}
  .prose ul:has(input[type="checkbox"]) li{display:grid;grid-template-columns:22px 1fr;column-gap:12px;align-items:start;padding:0;font-size:18px;line-height:1.55;color:var(--fg-muted);}
  .prose ul:has(input[type="checkbox"]) li::before{content:none;}
  .prose ul:has(input[type="checkbox"]) input[type="checkbox"]{width:18px;height:18px;margin:5px 0 0;border-color:var(--border-strong);accent-color:var(--teal-600);}
  .prose ul li b,.prose ul li strong{color:var(--fg);font-weight:var(--w-body-em);}
  /* Inline emphasis + links: one consistent treatment (bold is used heavily;
     links must be visibly distinguishable, not colour-only). */
  .prose strong,.prose b{font-weight:var(--w-body-em);color:var(--ink);}
  .prose a{color:var(--accent-text);text-decoration:none;font-weight:600;transition:color var(--dur-fast),background-size var(--dur-fast);}
  .prose a:hover{color:var(--terracotta);text-decoration:none;}
  .aside{margin:44px 0;background:var(--navy-50);border:1px solid var(--border);padding:24px 28px;box-shadow:var(--shadow-card);}
  .aside .lbl{display:inline-flex;align-items:center;gap:7px;font-family:var(--font-mono);font-size:10px;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--navy-700);}
  .src-note{font-size:15px;color:var(--fg-subtle);font-style:italic;border-top:1px solid var(--border);padding-top:18px;margin-top:8px;}

  .copy-letter{margin:40px 0 46px;background:var(--bg-elevated);border:1px solid var(--border-strong);box-shadow:var(--shadow-lift);}
  .copy-letter__head{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:16px 18px;border-bottom:1px solid var(--border);background:var(--bg-elevated);}
  .copy-letter__head p{margin:0;font-family:var(--font-display);font-size:20px;line-height:1.2;color:var(--ink);}
  .copy-letter__head p span{display:block;margin-bottom:5px;font-family:var(--font-mono);font-size:10px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--accent-text);}
  .copy-letter__head button{display:inline-flex;align-items:center;gap:8px;flex:none;min-height:42px;border:1px solid var(--border-strong);background:var(--paper);color:var(--navy-700);padding:0 14px;font-family:var(--font-mono);font-size:10px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;cursor:pointer;transition:background var(--dur-fast),color var(--dur-fast),border-color var(--dur-fast);}
  .copy-letter__head button:hover{background:var(--navy-700);border-color:var(--navy-700);color:var(--paper);}
  .copy-letter__head button iconify-icon{font-size:17px;}
  .copy-letter pre{margin:0;padding:28px 30px;overflow:auto;background:var(--bg-elevated);color:var(--ink);font-family:var(--font-mono);font-size:14px;line-height:1.65;white-space:pre;}
  .copy-letter code{font-family:inherit;color:inherit;background:transparent;padding:0;border:0;}

  /* inline tools band */
  .tools-band{max-width:1000px;margin:0 auto;padding:0 32px;}
  .tb-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:22px;}
  .tb-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
  /* article-tail tools — photo-card treatment matching /tools .tk-image-grid-3 */
  .tail-tools-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:22px;}
  .tail-tools-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
  .tail-tools-grid .tool-image-card{min-height:250px;}
  @media(max-width:760px){ .tail-tools-grid{grid-template-columns:1fr;} }
  .tb-card{display:flex;flex-direction:column;gap:0;background:var(--bg-elevated);border:1px solid var(--border);
    border-top:3px solid var(--navy-600);padding:24px 24px 22px;text-decoration:none;color:inherit;transition:border-color var(--dur-fast),transform var(--dur-fast);}
  .tb-card:hover{border-color:var(--border-strong);transform:translateY(-2px);}
  .tb-card.tb-accent{border-top-color:var(--terracotta);}
  .tb-ic{width:44px;height:44px;border-radius:999px;background:var(--navy-50);color:var(--navy-700);display:flex;align-items:center;justify-content:center;font-size:23px;margin-bottom:16px;}
  .tb-card.tb-accent .tb-ic{background:var(--t-50);color:var(--terracotta);}
  .tb-card h4{font-family:var(--font-display);font-size:21px;line-height:1.1;}
  .tb-card p{margin-top:8px;font-size:14.5px;line-height:1.5;color:var(--fg-muted);flex:1;}
  .tb-go{margin-top:16px;font-family:var(--font-mono);font-size:11px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--accent-text);display:inline-flex;align-items:center;gap:7px;}
  .tb-card:hover .tb-go .arr{transform:translateX(4px);}
  .tb-go .arr{transition:transform var(--dur-med) var(--ease-out);}

  .related{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
  .postcard{display:flex;flex-direction:column;text-decoration:none;color:inherit;background:var(--bg-elevated);border:1px solid var(--border);}
  .postcard .thumb{aspect-ratio:16/10;overflow:hidden;}
  .postcard .thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--dur-slow) var(--ease-out);}
  .postcard:hover .thumb img{transform:scale(1.05);}

  @media(max-width:980px){
    .art-grid{padding:44px 28px 50px;}
    .tb-grid{grid-template-columns:1fr;}
    .related{grid-template-columns:1fr;}
    .copy-letter__head{align-items:flex-start;flex-direction:column;}
    .copy-letter__head button{width:100%;justify-content:center;}
  }
  @media(max-width:620px){
    .art-grid{padding:34px 20px 42px;border-left:0;border-right:0;}
    .prose p,.prose ul li,.prose ol li{font-size:17px;}
    .prose > p:first-of-type{font-size:18.5px;}
    .prose h2{margin-top:58px;padding-top:28px;}
    .prose > p:first-of-type::first-letter,.prose .drop::first-letter{font-size:4.6em;padding-right:12px;}
    .prose blockquote{margin:42px 0;padding:30px 24px 30px 64px;font-size:clamp(28px,8vw,36px);}
    .prose blockquote::before{left:18px;top:18px;font-size:72px;}
    .copy-letter pre{padding:22px 18px;font-size:12.5px;}
    .prose ul:has(input[type="checkbox"]){padding:18px 18px;margin-bottom:30px;}
    .prose ul:has(input[type="checkbox"]) li{font-size:17px;grid-template-columns:20px 1fr;column-gap:10px;}
  }

/* responsive: never let content images overflow the column */
.prose img, .prose video, .prose table { max-width: 100%; height: auto; }

/* Tables — clean, bordered rows for benchmark/data tables AND the FAQ table.
   (.prose table stays display:block above so wide data tables scroll on mobile.) */
.prose table { display:block;width:100%;border-collapse:separate;border-spacing:0;margin:42px 0;font-size:16px;line-height:1.55;overflow-x:auto;background:var(--bg-elevated);border:1px solid var(--border);box-shadow:var(--shadow-card); }
.prose th, .prose td { text-align:left;vertical-align:top;padding:14px 18px;border-bottom:1px solid var(--border);min-width:150px; }
.prose thead th { position:sticky;top:0;font-family:var(--font-mono);font-size:11px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--navy-700);background:var(--navy-50);border-bottom:1px solid var(--border-strong); }
.prose tbody tr:nth-child(even) td { background:var(--n-50); }
.prose tbody tr:last-child td { border-bottom:0; }
.prose tbody td { color:var(--fg-muted); }
.prose td strong,.prose td b { color:var(--ink); }

/* FAQ — a clean definition list from faq_items (answers stay visible, which
   matches the FAQPage JSON-LD and reads better than a hidden accordion). */
.faq-block { position:relative;isolation:isolate;margin-top:72px;padding:42px 42px 22px;background:var(--surface-edit);border:1px solid var(--border);box-shadow:var(--shadow-card);overflow:hidden; }
.faq-block::before{content:"?";position:absolute;right:28px;top:12px;z-index:-1;font-family:var(--font-display);font-size:178px;line-height:.8;color:var(--terracotta);opacity:.14;font-style:italic;pointer-events:none;}
.faq-block > h2 { scroll-margin-top: 104px; padding-right:120px; }
.faq-list { margin: 24px 0 0; }
.faq-item { padding: 22px 0; border-bottom: 1px solid var(--border); }
.faq-item:first-child { border-top: 1px solid var(--border); }
.faq-item dt { font-family: var(--font-display); font-size: 23px; line-height: 1.2; color: var(--ink); }
.faq-item dd { margin: 10px 0 0; font-size: 17px; line-height: 1.62; color: var(--fg-muted); max-width: 66ch; }
@media(max-width:620px){
  .faq-block{padding:34px 22px 18px;}
  .faq-block::before{right:14px;top:14px;font-size:116px;}
  .faq-block > h2{padding-right:64px;}
}

/* WIDE MEDIA — data tables + figures + image-only paragraphs break past the
   readable text column to a wider frame (centred to the viewport). Kept as
   SEPARATE rules so an engine without :has() still breaks out tables/figures.
   Keeps prose at a comfortable measure while the page uses its full width. */
.prose figure { width: min(1080px, calc(100vw - 48px)); max-width: none; margin-left: 50%; transform: translateX(-50%); }
.prose figure img { width: 100%; }
.prose figure figcaption { margin-top: 10px; font-size: 14px; color: var(--fg-subtle); text-align: center; font-style: italic; }
.prose p:has(> img:only-child) { width: min(1080px, calc(100vw - 48px)); max-width: none; margin-left: 50%; transform: translateX(-50%); margin-top: 44px; margin-bottom: 44px; }
.prose p:has(> img:only-child) img { width: 100%; border: 1px solid var(--border); box-shadow:var(--shadow-card); }
.prose .figcap{margin:-28px auto 42px;font-family:var(--font-mono);font-size:12px;line-height:1.5;letter-spacing:.08em;text-transform:uppercase;color:var(--fg-subtle);text-align:center;max-width:70ch;}
@media (max-width: 1024px) {
  /* below the breakout's usefulness, snap media back to the text column */
  .prose figure { width: 100%; margin-left: 0; transform: none; }
  .prose p:has(> img:only-child) { width: 100%; margin-left: 0; transform: none; }
}