/* Shared site chrome — header, nav, footer, homepage cards.
   Namespaced with hub- prefixes so it never collides with a page's own styles. */
:root{
  --hub-paper:#f3f4f7; --hub-paper-raised:#fdfdfe; --hub-ink:#25274D; --hub-ink-soft:#464866; --hub-ink-faint:#6b6d85;
  --hub-line:#c7c8d3; --hub-accent:#2E9CCA; --hub-accent-ink:#29648A; --hub-accent-soft:rgba(46,156,202,0.12);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --hub-paper:#25274D; --hub-paper-raised:#464866; --hub-ink:#AAABB8; --hub-ink-soft:#8f90a8; --hub-ink-faint:#8f90a8;
    --hub-line:#5a5c7d; --hub-accent:#2E9CCA; --hub-accent-ink:#5db8dd; --hub-accent-soft:rgba(46,156,202,0.18);
  }
}
:root[data-theme="dark"]{
  --hub-paper:#25274D; --hub-paper-raised:#464866; --hub-ink:#AAABB8; --hub-ink-soft:#8f90a8; --hub-ink-faint:#8f90a8;
  --hub-line:#5a5c7d; --hub-accent:#2E9CCA; --hub-accent-ink:#5db8dd; --hub-accent-soft:rgba(46,156,202,0.18);
}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--hub-paper);color:var(--hub-ink);font:16px/1.55 "Source Sans 3",system-ui,sans-serif;-webkit-font-smoothing:antialiased}
h1,h2,h3{font-family:"Fraunces",Georgia,serif;font-weight:600;color:var(--hub-ink)}
a{color:inherit}

.hub-header{border-bottom:1px solid var(--hub-line);background:var(--hub-paper-raised)}
.hub-header-inner{max-width:920px;margin:0 auto;padding:16px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.hub-brand{font-family:"Fraunces",Georgia,serif;font-weight:600;font-size:18px;text-decoration:none;color:var(--hub-ink)}
.hub-nav{display:flex;gap:20px;font-family:"IBM Plex Mono",monospace;font-size:12.5px;letter-spacing:.3px;text-transform:uppercase}
.hub-nav a{text-decoration:none;color:var(--hub-ink-soft);border-bottom:2px solid transparent;padding-bottom:2px}
.hub-nav a:hover,.hub-nav a.active{color:var(--hub-accent-ink);border-color:var(--hub-accent)}

.hub-footer{max-width:920px;margin:60px auto 0;padding:20px 24px;border-top:1px solid var(--hub-line);font-family:"IBM Plex Mono",monospace;font-size:11px;color:var(--hub-ink-faint)}

.hub-main{max-width:920px;margin:0 auto;padding:48px 24px 80px}
.hub-hero h1{font-size:34px;margin:0 0 10px}
.hub-hero p{color:var(--hub-ink-soft);max-width:60ch;font-size:16px}

.hub-cardgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px;margin-top:36px}
.hub-card{display:block;text-decoration:none;color:inherit;border:1px solid var(--hub-line);border-radius:10px;padding:22px;background:var(--hub-paper-raised);transition:border-color .15s,transform .15s}
.hub-card:hover{border-color:var(--hub-accent);transform:translateY(-2px)}
.hub-card .kicker{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:1px;text-transform:uppercase;color:var(--hub-accent-ink);background:var(--hub-accent-soft);display:inline-block;padding:3px 9px;border-radius:3px;margin-bottom:12px}
.hub-card h2{font-size:19px;margin:0 0 8px}
.hub-card p{color:var(--hub-ink-soft);font-size:14px;margin:0}

/* Reserved layout space for a future ad slot — no ad network wired up yet. */
.hub-adslot{margin:40px 0;border:1px dashed var(--hub-line);border-radius:8px;padding:14px;text-align:center;font-family:"IBM Plex Mono",monospace;font-size:11px;color:var(--hub-ink-faint);letter-spacing:.5px;text-transform:uppercase}