/* Engineering hub — shared styles (issue 036). Same design language as the
   landing page: navy header/hero, mist sections, card grid. */
:root{
  --navy:#0b1f3a; --navy-2:#122c50; --ink:#1a2433; --paper:#ffffff;
  --mist:#f2f5f9; --line:#dbe3ec; --accent:#1f7a4d; --accent-2:#2563eb;
  --warn:#b45309; --bad:#b91c1c; --muted:#5b6b7f; --radius:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
     color:var(--ink);background:var(--paper);line-height:1.6}
.wrap{max-width:1060px;margin:0 auto;padding:0 20px}
.hero{background:linear-gradient(180deg,var(--navy) 0%,var(--navy-2) 100%);color:#fff;padding:44px 0 48px}
.hero h1{font-size:clamp(1.5rem,3.6vw,2.2rem);line-height:1.2;max-width:820px}
.hero p.lead{margin-top:14px;max-width:700px;font-size:1.02rem;color:#c8d6e8}
.hero .crumb{font-size:.8rem;letter-spacing:.6px;text-transform:uppercase;color:#8ff0b6;margin-bottom:12px}
.hero .crumb a{color:#8ff0b6;text-decoration:none}
section{padding:44px 0}
section.alt{background:var(--mist)}
h2{font-size:1.35rem;margin-bottom:8px}
h3{font-size:1.02rem;margin-bottom:6px}
.kicker{color:var(--accent-2);font-size:.8rem;font-weight:700;letter-spacing:1.2px;text-transform:uppercase}
.sub{color:var(--muted);max-width:720px;margin-bottom:24px}
p+p{margin-top:10px}
.grid{display:grid;gap:18px}
.grid.cols-3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.grid.cols-2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px}
section.alt .card{box-shadow:0 1px 3px rgba(11,31,58,.06)}
.card p{font-size:.92rem;color:var(--muted)}
.card a.more{font-size:.88rem;font-weight:600;color:var(--accent-2);text-decoration:none}
.tag{display:inline-block;font-size:.72rem;font-weight:700;padding:2px 9px;border-radius:999px;letter-spacing:.3px}
.tag.ok{background:#e6f6ec;color:var(--accent)}
.tag.warn{background:#fdf1e3;color:var(--warn)}
.tag.bad{background:#fdeaea;color:var(--bad)}
.tag.info{background:#e8effc;color:var(--accent-2)}
.status-strip{display:flex;gap:14px;flex-wrap:wrap;margin-top:22px}
.stat{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);border-radius:10px;
      padding:10px 16px;min-width:130px}
.stat .k{font-size:.7rem;letter-spacing:.8px;text-transform:uppercase;color:#9fb3cf}
.stat .v{font-size:1.05rem;font-weight:700;color:#fff}
.stat .v a{color:#8ff0b6;text-decoration:none}
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
table{width:100%;border-collapse:collapse;font-size:.9rem;min-width:560px}
th,td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--line)}
th{background:var(--navy);color:#fff;font-weight:600;font-size:.83rem}
tr:last-child td{border-bottom:none}
td a{color:var(--accent-2);text-decoration:none}
.receipts{border-left:4px solid var(--accent-2);background:#fff;border-radius:0 var(--radius) var(--radius) 0;
          padding:16px 20px;margin-top:22px;font-size:.92rem}
.receipts ul{margin:6px 0 0 18px}
.receipts a{color:var(--accent-2);text-decoration:none}
.story{border-left:4px solid var(--accent);background:#fff;border-radius:0 var(--radius) var(--radius) 0;
       padding:16px 20px;margin-top:14px;font-size:.93rem}
.story .t{font-weight:700}
.story p{color:var(--muted);font-size:.9rem}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.86em;
     background:var(--mist);padding:1px 5px;border-radius:5px}
pre{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.85rem;line-height:1.6;
    background:var(--navy);color:#bcd3ef;border-radius:var(--radius);padding:18px;overflow-x:auto;margin-top:14px}
footer{background:var(--navy);color:#a9bcd6;padding:32px 0;font-size:.85rem;margin-top:24px}
footer .wrap{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap}
footer a{color:#dbe6f5}
.loading{color:var(--muted);font-size:.9rem}