/* VX LAB — article / case / knowledge-base prose styles (square / blueprint) */
.page-wrap{padding-top:clamp(48px,7vw,90px)}
.breadcrumb{font-family:var(--font-mono,'IBM Plex Mono',monospace);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);display:flex;gap:.6em;flex-wrap:wrap;margin-bottom:22px}
.breadcrumb a{color:var(--ink-3)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{opacity:.5}

.article-head{max-width:820px;margin:0 auto clamp(28px,4vw,48px);border-bottom:1px solid var(--line);padding-bottom:28px}
.article-head .eyebrow{margin-bottom:16px}
.article-head h1{font-size:clamp(1.9rem,4.5vw,3.2rem);line-height:1.06;margin:0 0 18px}
.article-head .lede{font-size:clamp(1.1rem,1.8vw,1.35rem);color:var(--ink-2);line-height:1.5;max-width:62ch}
.article-meta{display:flex;gap:18px;flex-wrap:wrap;margin-top:20px;font-family:var(--font-mono,'IBM Plex Mono',monospace);font-size:.74rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3)}

.prose{max-width:760px;margin:0 auto;font-size:1.06rem;line-height:1.75;color:var(--ink-2)}
.prose > * + *{margin-top:1.15em}
.prose h2{font-family:var(--font-display,'Space Grotesk',sans-serif);color:var(--ink);font-size:clamp(1.4rem,2.6vw,1.9rem);line-height:1.15;letter-spacing:-.01em;margin-top:2em;margin-bottom:.1em;padding-top:.6em;border-top:1px solid var(--line)}
.prose h3{font-family:var(--font-display,'Space Grotesk',sans-serif);color:var(--ink);font-size:clamp(1.15rem,2vw,1.4rem);margin-top:1.6em}
.prose p{margin:0}
.prose strong{color:var(--ink);font-weight:600}
.prose a{color:var(--brand);text-decoration:none;border-bottom:1px solid rgba(11,67,255,.3)}
.prose a:hover{border-bottom-color:var(--brand)}
.prose ul,.prose ol{padding-left:1.3em}
.prose li{margin-top:.5em}
.prose ul li{list-style:none;position:relative}
.prose ul li::before{content:"";position:absolute;left:-1.1em;top:.62em;width:6px;height:6px;background:var(--brand)}
.prose ol{list-style:decimal}
.prose ol li{padding-left:.2em}
.prose blockquote{border-left:3px solid var(--brand);padding:.2em 0 .2em 1.2em;color:var(--ink);font-size:1.1rem}
.prose table{width:100%;border-collapse:collapse;font-size:.95rem}
.prose th,.prose td{border:1px solid var(--line);padding:10px 14px;text-align:left;vertical-align:top}
.prose th{background:var(--bg-soft);font-family:var(--font-mono,'IBM Plex Mono',monospace);font-size:.78rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ink)}
.prose figure{margin:1.6em 0}
.prose figure img{width:100%;border:1px solid var(--line)}
.prose figcaption{font-family:var(--font-mono,'IBM Plex Mono',monospace);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3);margin-top:8px}

/* FAQ */
.faq{max-width:760px;margin:clamp(40px,6vw,72px) auto 0}
.faq h2{font-family:var(--font-display,'Space Grotesk',sans-serif);font-size:clamp(1.4rem,2.6vw,1.9rem);color:var(--ink);margin-bottom:18px}
.faq details{border:1px solid var(--line);padding:0 18px;margin-top:-1px}
.faq summary{cursor:pointer;list-style:none;padding:16px 0;font-weight:600;color:var(--ink);display:flex;justify-content:space-between;gap:12px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--font-mono,monospace);color:var(--brand);font-size:1.3em}
.faq details[open] summary::after{content:"–"}
.faq details p{padding:0 0 18px;color:var(--ink-2);line-height:1.7;margin:0}

/* related + cta */
.related{max-width:980px;margin:clamp(48px,7vw,80px) auto 0}
.related h2{font-family:var(--font-mono,'IBM Plex Mono',monospace);font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;color:var(--brand);margin-bottom:18px}
.related-grid{display:grid;grid-template-columns:1fr;gap:1px;background:var(--line);border:1px solid var(--line)}
@media(min-width:760px){.related-grid{grid-template-columns:repeat(3,1fr)}}
.related-grid a{background:var(--bg-2);padding:22px;display:block;transition:background .2s}
.related-grid a:hover{background:var(--bg-soft)}
.related-grid .rc-cat{font-family:var(--font-mono,'IBM Plex Mono',monospace);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3)}
.related-grid .rc-title{color:var(--ink);font-weight:600;margin-top:8px;line-height:1.25}

.post-cta{max-width:980px;margin:clamp(48px,7vw,80px) auto 0;border:1px solid var(--line);background:var(--bg-soft);padding:clamp(28px,4vw,48px);text-align:center}
.post-cta h2{font-family:var(--font-display,'Space Grotesk',sans-serif);color:var(--ink);font-size:clamp(1.4rem,3vw,2rem);margin:0 0 12px}
.post-cta p{color:var(--ink-2);max-width:52ch;margin:0 auto 22px}

/* knowledge-base index */
.kb-hero{max-width:820px}
.kb-filters{display:flex;gap:8px;flex-wrap:wrap;margin:28px 0 0;font-family:var(--font-mono,'IBM Plex Mono',monospace)}
.kb-grid{display:grid;grid-template-columns:1fr;gap:1px;background:var(--line);border:1px solid var(--line);margin-top:8px}
@media(min-width:640px){.kb-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:980px){.kb-grid{grid-template-columns:repeat(3,1fr)}}
.kb-card{background:var(--bg-2);padding:26px;display:flex;flex-direction:column;gap:10px;transition:background .2s}
.kb-card:hover{background:var(--bg-soft)}
.kb-card .kb-cat{font-family:var(--font-mono,'IBM Plex Mono',monospace);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--brand)}
.kb-card h2,.kb-card h3{font-family:var(--font-display,'Space Grotesk',sans-serif);font-size:1.12rem;line-height:1.22;color:var(--ink);margin:0}
.kb-card p{font-size:.92rem;color:var(--ink-2);line-height:1.55;margin:0}
.kb-card .kb-more{margin-top:auto;font-family:var(--font-mono,'IBM Plex Mono',monospace);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3)}

/* case specifics */
.case-metrics{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);max-width:760px;margin:0 auto clamp(28px,4vw,40px)}
@media(min-width:640px){.case-metrics{grid-template-columns:repeat(4,1fr)}}
.case-metrics .cm{background:var(--bg-2);padding:22px}
.case-metrics .cm-val{font-family:var(--font-display,'Space Grotesk',sans-serif);font-size:clamp(1.4rem,3vw,2rem);color:var(--brand);line-height:1}
.case-metrics .cm-label{font-size:.82rem;color:var(--ink-3);margin-top:8px}
.case-hero{max-width:980px;margin:0 auto clamp(28px,4vw,48px)}
.case-hero img{width:100%;border:1px solid var(--line)}