:root{
  --bg:#f8fafc;
  --card:#ffffff;
  --text:#0f172a;
  --muted:#475569;
  --border:#e2e8f0;
  --brand:#111827;
  --accent:#2563eb;
  --accent2:#0ea5e9;
  --max:1100px;
  --radius:18px;
  --shadow:0 10px 30px rgba(2,6,23,.08);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.6}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}
.container{max-width:var(--max);margin:0 auto;padding:0 18px}
.topbar{background:rgba(255,255,255,.9);backdrop-filter:saturate(180%) blur(8px);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}
.nav{display:flex;align-items:center;justify-content:space-between;padding:12px 0;gap:12px}
.brand{display:flex;align-items:center;gap:12px}
.brand img{width:140px;height:auto}
.navlinks{display:flex;gap:14px;flex-wrap:wrap}
.navlinks a{color:var(--brand);font-weight:600;padding:8px 10px;border-radius:10px}
.navlinks a:hover{background:#eef2ff;text-decoration:none}
.hero{padding:22px 0 16px}
.heroCard{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.heroGrid{display:grid;grid-template-columns:1.2fr .8fr;gap:0}
.heroText{padding:22px 22px 16px}
.kicker{color:var(--muted);font-weight:600;font-size:14px;text-transform:uppercase;letter-spacing:.06em}
h1{margin:10px 0 10px;font-size:34px;line-height:1.2}
.sub{margin:0;color:var(--muted);font-size:17px}
.badges{margin-top:14px;display:flex;gap:10px;flex-wrap:wrap}
.badge{border:1px solid var(--border);border-radius:999px;padding:6px 10px;background:#f1f5f9;color:#0f172a;font-weight:600;font-size:13px}
.heroMedia{border-left:1px solid var(--border);background:linear-gradient(135deg,#eef2ff,#f0f9ff);display:flex;align-items:center;justify-content:center;padding:16px}
.heroMedia img{border-radius:14px;border:1px solid var(--border)}
.main{padding:18px 0 40px}
.grid{display:grid;grid-template-columns:2fr 1fr;gap:18px}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
.card .pad{padding:18px}
h2{margin:0 0 10px;font-size:22px}
h3{margin:18px 0 8px;font-size:18px}
.meta{color:var(--muted);font-size:13px}
.toc{padding-left:18px;margin:8px 0 0}
.toc li{margin:6px 0}
hr{border:none;border-top:1px solid var(--border);margin:18px 0}
.callout{border:1px dashed #cbd5e1;background:#f8fafc;border-radius:14px;padding:14px}
.quote{border-left:4px solid var(--accent2);padding-left:12px;color:var(--muted)}
.videoWrap{position:relative;padding-bottom:56.25%;height:0;overflow:hidden;border-radius:14px;border:1px solid var(--border)}
.videoWrap iframe{position:absolute;top:0;left:0;width:100%;height:100%}
.footer{border-top:1px solid var(--border);padding:22px 0;color:var(--muted);font-size:14px}
.footerGrid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.small{font-size:12px;color:#64748b}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:#fff;padding:10px 14px;border-radius:12px;font-weight:700}
.btn:hover{text-decoration:none;filter:brightness(.98)}
.input{width:100%;padding:11px 12px;border:1px solid var(--border);border-radius:12px;font-size:15px}
@media (max-width: 900px){
  .heroGrid{grid-template-columns:1fr}
  .heroMedia{border-left:none;border-top:1px solid var(--border)}
  .grid{grid-template-columns:1fr}
  h1{font-size:28px}
}