:root{
  --bg:#0b1220;
  --ink:#0f172a;
  --ink-2:#1e293b;
  --muted:#94a3b8;
  --white:#ffffff;
  --blue:#1e3a8a;
  --blue-2:#1d4ed8;
  --blue-3:#3b82f6;
  --orange:#f97316;
  --orange-2:#fb923c;
  --surface:#0f1629;
  --card:#111a31;
  --ring: 0 0 0 3px rgba(59,130,246,.35);
  --radius: 18px;
  --shadow: 0 10px 30px rgba(2,6,23,.25);
  --shadow-soft: 0 6px 20px rgba(2,6,23,.15);
  --maxw: 1100px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Inter, 'Helvetica Neue', Arial, 'Noto Sans', 'Apple Color Emoji', 'Segoe UI Emoji';
  background: radial-gradient(1200px 600px at 10% -10%, rgba(37,99,235,.15), transparent),
              radial-gradient(900px 400px at 110% 10%, rgba(249,115,22,.14), transparent),
              linear-gradient(180deg, #0b1220, #0b1220);
  color: var(--white);
  line-height:1.6;
}

.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}

a{color:var(--orange-2);text-decoration:none}
a:hover{text-decoration:underline}

header.site-header{
  position:sticky;top:0;z-index:10;
  background: rgba(9,14,26,.7);
  backdrop-filter: blur(8px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:14px 0;
}
.brand{display:flex;align-items:center;gap:12px}
.brand img{width:36px;height:36px}
.brand .title{font-weight:800;letter-spacing:.3px}
.brand .badge{font-size:.72rem;color:#cbd5e1}
.nav ul{list-style:none;display:flex;gap:14px;margin:0;padding:0;align-items:center}
.nav a{
  display:inline-block;padding:10px 14px;border-radius:12px;
  background:transparent;border:1px solid transparent;
  transition:.2s ease;
  font-weight:600;color:#e2e8f0;
}
.nav a:hover{background:rgba(59,130,246,.12);border-color:rgba(59,130,246,.25);text-decoration:none}
.nav .cta{
  background: linear-gradient(145deg, var(--orange), var(--orange-2));
  color:#0b1220;border:none; box-shadow: var(--shadow);
}
.nav .cta:hover{transform: translateY(-1px);}

.hero{
  display:grid; grid-template-columns: 1.1fr .9fr; gap:28px; align-items:center;
  padding:48px 0 28px;
}
.hero h1{
  font-size:clamp(1.9rem, 3.8vw, 3rem);
  line-height:1.1;margin:0 0 12px;
  letter-spacing:.3px;
}
.hero p{color:#cbd5e1;margin:0 0 18px}
.hero .actions{display:flex;gap:12px;flex-wrap:wrap}
.btn{
  display:inline-block;padding:12px 16px;border-radius:14px;border:1px solid rgba(255,255,255,.12);
  font-weight:700;letter-spacing:.3px;
}
.btn.primary{background: linear-gradient(145deg, var(--blue-2), var(--blue-3)); color:white;border-color:transparent; box-shadow: var(--shadow);}
.btn.secondary{background: rgba(255,255,255,.06); color:#e2e8f0}
.hero-card{
  background:linear-gradient(180deg, rgba(30,58,138,.5), rgba(17,26,49,.6));
  border:1px solid rgba(255,255,255,.12);
  border-radius: var(--radius);
  padding:20px; box-shadow: var(--shadow-soft);
}
.hero-card img{width:100%;border-radius:14px;border:1px solid rgba(255,255,255,.1)}

.section{padding:28px 0}
.section h2{font-size:1.6rem;margin:0 0 12px}
.section .sub{color:#9fb0c8;margin:-6px 0 18px}

.grid{
  display:grid; gap:16px;
  grid-template-columns: repeat(3, 1fr);
}
.card{
  background: linear-gradient(180deg, rgba(17,26,49,.85), rgba(17,26,49,.6));
  border:1px solid rgba(255,255,255,.1);
  border-radius: var(--radius); padding:18px;
  box-shadow: var(--shadow-soft); transition:.2s ease;
}
.card:hover{transform:translateY(-3px); box-shadow: var(--shadow);}
.card .eyebrow{font-size:.76rem;color:#93c5fd;margin:0 0 8px;letter-spacing:.4px;text-transform:uppercase}
.card h3{margin:0 0 6px}
.card p{color:#cbd5e1;margin:0 0 10px}
.card .meta{font-size:.85rem;color:#9fb0c8}

.topic-list{
  background: linear-gradient(145deg, rgba(59,130,246,.1), rgba(249,115,22,.08));
  border:1px dashed rgba(148,163,184,.35);
  border-radius:18px;padding:16px 18px;margin-top:8px;
}
.topic-list h3{margin:6px 0 8px}
.topic-list ul, .topic-list ol{padding-left:22px;margin:8px 0}
.topic-list li{margin:6px 0}

.split{display:grid;grid-template-columns: 1fr 1fr; gap:18px; align-items:start}

footer{
  margin-top:28px;border-top:1px solid rgba(255,255,255,.08);
  color:#9fb0c8;
}
.footer-wrap{display:flex;justify-content:space-between;gap:14px; padding:18px 0; flex-wrap:wrap}
.footer-wrap .social{display:flex;gap:10px}
.tag{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(59,130,246,.15);border:1px solid rgba(59,130,246,.25);
  color:#bfdbfe;padding:6px 10px;border-radius:999px;font-size:.86rem
}
.tag.orange{background:rgba(249,115,22,.15); border-color: rgba(249,115,22,.3); color:#fed7aa}

@media (max-width: 900px){
  .hero{grid-template-columns: 1fr}
  .grid{grid-template-columns: 1fr 1fr}
  .split{grid-template-columns: 1fr}
}
@media (max-width: 640px){
  .grid{grid-template-columns: 1fr}
  .nav ul{flex-wrap:wrap}
}