:root{
  --bg:#f4f6f8; --fg:#1d2330; --muted:#5b6472; --line:#dfe3e8;
  --brand:#0b5cab; --brand-2:#0a4d8f; --card:#ffffff; --accent:#e8f1fb;
  --radius:12px; --maxw:980px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Oxygen,Ubuntu,Cantarell,
         "Helvetica Neue","Noto Sans",Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";
}
@media (prefers-color-scheme:dark){
  :root{ --bg:#10141b; --fg:#e7ebf0; --muted:#9aa4b2; --line:#262c36;
         --brand:#5aa9ff; --brand-2:#7cc0ff; --card:#161b24; --accent:#13243b; }
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; font-family:var(--font); line-height:1.55; color:var(--fg);
  background:var(--bg); -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
}
a{color:var(--brand); text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--maxw); margin:0 auto; padding:0 16px}
header.site{
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#fff; padding:18px 0;
}
header.site .wrap{display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap}
.brand{font-size:1.15rem; font-weight:700; letter-spacing:.2px; color:#fff}
.brand small{display:block; font-weight:400; opacity:.85; font-size:.8rem}
nav.top a{color:#fff; opacity:.9; font-weight:600; padding:8px 12px; border-radius:8px}
nav.top a:hover{opacity:1; background:rgba(255,255,255,.15); text-decoration:none}
main{padding:28px 0 40px}
.card{
  background:var(--card); border:1px solid var(--line); border-radius:var(--radius);
  padding:22px 24px; margin:0 0 22px; box-shadow:0 1px 2px rgba(16,24,40,.04);
}
h1{font-size:1.5rem; margin:0 0 6px}
h2{font-size:1.2rem; margin:0 0 12px}
h3{font-size:1rem; margin:18px 0 8px; color:var(--muted); text-transform:uppercase; letter-spacing:.4px}
p.lede{color:var(--muted); margin:0 0 14px}
ul.cats{list-style:none; margin:0; padding:0; display:grid; grid-template-columns:repeat(2,1fr); gap:8px 18px}
@media (max-width:640px){ ul.cats{grid-template-columns:1fr} }
ul.cats li a{
  display:block; padding:10px 12px; border:1px solid var(--line); border-radius:10px;
  background:var(--accent); color:var(--fg); font-weight:600;
}
ul.cats li a:hover{border-color:var(--brand); text-decoration:none}
.actions{display:flex; gap:10px; flex-wrap:wrap; margin-top:18px}
.btn{display:inline-block; padding:9px 16px; border-radius:10px; font-weight:600; cursor:pointer;
     border:1px solid transparent}
.btn-primary{background:var(--brand); color:#fff}
.btn-primary:hover{background:var(--brand-2); text-decoration:none}
.btn-ghost{background:transparent; color:var(--brand); border-color:var(--line)}
.btn-ghost:hover{border-color:var(--brand); text-decoration:none}
footer.site{border-top:1px solid var(--line); color:var(--muted); font-size:.85rem; padding:18px 0}
footer.site .wrap{display:flex; justify-content:space-between; gap:12px; flex-wrap:wrap}
.status{display:inline-block; padding:3px 10px; border-radius:999px; background:var(--accent);
        color:var(--brand-2); font-weight:700; font-size:.78rem; letter-spacing:.3px}
:focus-visible{outline:3px solid var(--brand); outline-offset:2px}