/* Knowledge section: hub filters, cards, article reading layout. Builds on site.css tokens. */
.hero-art{padding-bottom:2.2rem}
.hero-art h1{font-size:clamp(1.7rem,4.2vw,2.5rem);line-height:1.2;margin:.6rem 0 .9rem}
.crumbs{font-size:.78rem;color:rgba(255,255,255,.65);margin-bottom:1rem}
.crumbs a{color:var(--gold-light);text-decoration:none}.crumbs span{margin:0 .35rem;opacity:.5}
.art-meta{display:flex;flex-wrap:wrap;gap:.5rem .9rem;align-items:center;font-size:.78rem;color:rgba(255,255,255,.7)}
.pill{background:var(--gold);color:var(--blue-deepest);font-weight:700;font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;padding:.2rem .6rem;border-radius:99px}
.pill-line{background:transparent;color:var(--gold-light);border:1px solid rgba(232,200,106,.5)}
.byline{font-size:.85rem;color:rgba(255,255,255,.7);margin-top:.8rem}
.prose{font-size:1.04rem;line-height:1.78;color:var(--txt);max-width:44rem}
.prose h2{font-size:1.4rem;margin:2.2rem 0 .7rem}.prose h3{font-size:1.1rem;margin:1.6rem 0 .5rem}
.prose p,.prose ul,.prose ol{margin:0 0 1.1rem}.prose li{margin-bottom:.4rem}
.prose blockquote{border-left:3px solid var(--gold);margin:1.6rem 0;padding:.4rem 0 .4rem 1.2rem;font-family:'Playfair Display',Georgia,serif;font-size:1.18rem;line-height:1.55;color:var(--blue)}
.prose table{width:100%;border-collapse:collapse;font-size:.9rem;margin:1.2rem 0}
.prose th,.prose td{border-bottom:1px solid var(--outline);padding:.55rem .6rem;text-align:left;vertical-align:top}
.prose th{background:var(--blue-wash);font-size:.78rem;letter-spacing:.05em;text-transform:uppercase}
.prose a{color:var(--blue)}
.series-nav{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.series-nav a{display:block;border:1px solid var(--outline);border-radius:8px;padding:.9rem 1.1rem;background:#fff;text-decoration:none;color:var(--txt);font-weight:600;font-size:.92rem}
.series-nav a:hover{border-color:var(--gold)}.series-nav a.r{text-align:right}
.series-nav small{display:block;font-size:.68rem;letter-spacing:.09em;text-transform:uppercase;color:var(--muted);margin-bottom:.25rem}
.kb-tools{margin:1.4rem 0 1.6rem}
#kb-q{width:100%;max-width:34rem;padding:.8rem 1rem;border:1px solid var(--outline);border-radius:8px;font:inherit;background:#fff}
#kb-q:focus{outline:2px solid var(--gold);outline-offset:1px}
.chips{display:flex;flex-wrap:wrap;gap:.45rem;margin-top:.8rem}
.chip{font:inherit;font-size:.8rem;border:1px solid var(--outline);background:#fff;color:var(--txt);border-radius:99px;padding:.35rem .85rem;cursor:pointer}
.chip b{font-weight:600;color:var(--muted);margin-left:.2rem}
.chip.on{background:var(--blue);border-color:var(--blue);color:#fff}.chip.on b{color:var(--gold-light)}
.muted-s{font-size:.82rem;color:var(--muted);margin-top:.8rem}
.art .foot{display:block;margin-top:.7rem;font-size:.72rem;color:var(--muted)}
.art h4{line-height:1.35}
.series-card{border-top:3px solid var(--gold)}
.ref-k{margin:0 0 .7rem}.ref-grid{margin-bottom:1.6rem}
.kb-grid{margin-top:.5rem}
details.more{margin-top:1.1rem}
details.more summary{cursor:pointer;font-weight:600;color:var(--blue);font-size:.9rem;margin-bottom:1rem}
.svc-block .grid-3{gap:1rem}
@media(max-width:640px){.series-nav{grid-template-columns:1fr}.series-nav a.r{text-align:left}}
@media(min-width:900px){#start-here .grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}}