:root{
  --bg:#000000;
  --fg:#e6eef8;
  --muted:#9aa6b2;
  --accent:#4fc3f7;
  --card:#07121a;
  --radius:12px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{font-family:Inter,Segoe UI,Helvetica,Arial,sans-serif;margin:0;background:var(--bg);color:var(--fg);line-height:1.6;-webkit-font-smoothing:antialiased}

.container{max-width:900px;margin:0 auto;padding:20px}

.site-header{border-bottom:1px solid rgba(255,255,255,0.06);background:transparent}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding-top:18px;padding-bottom:18px}
.header-inner h1{margin:0;font-size:18px}
.main-nav a{margin-left:14px;color:var(--accent);text-decoration:none;font-weight:600}

.hero{padding:28px 0 6px}
.hero h2{margin:0;font-size:26px}
.lead{color:var(--muted);margin-top:8px}

.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:18px}
.card{display:block;padding:18px;background:var(--card);border-radius:var(--radius);box-shadow:0 6px 20px rgba(255,255,255,0.02);color:inherit;text-decoration:none;transition:transform .16s ease,box-shadow .16s ease}
.card h3{margin:0 0 6px 0}
.card p{margin:0;color:var(--muted);font-size:14px}
.card:hover{transform:translateY(-6px);box-shadow:0 14px 30px rgba(15,23,32,0.12)}

.content{padding:18px 0}
.content h2,.content h3{margin-top:1.2em}

footer{padding:18px 0;border-top:1px solid rgba(255,255,255,0.04);color:var(--muted)}

pre, code{font-family:Menlo,Monaco,monospace}

@media (prefers-color-scheme:dark){
  :root{--bg:#000000;--fg:#e6eef8;--muted:#9aa6b2;--accent:#4fc3f7;--card:#07121a}
  .site-header, footer{border-color:rgba(255,255,255,0.06)}
  .card{box-shadow:0 6px 20px rgba(255,255,255,0.02)}
}

/* Force full black background on body */
body{background:var(--bg)}

/* Mobile-specific adjustments */
@media (max-width: 600px) {
  .container{padding:16px}
  .header-inner{flex-direction:column;align-items:flex-start;gap:8px;padding-top:12px;padding-bottom:12px}
  .main-nav{width:100%;display:flex;flex-wrap:wrap;gap:8px}
  .main-nav a{margin-left:0;padding:8px 12px;border-radius:8px;background:transparent;font-size:15px}

  .hero{padding:18px 0 6px}
  .hero h2{font-size:20px}
  .lead{font-size:14px}

  .cards{grid-template-columns:1fr;gap:12px;margin-top:12px}
  .card{padding:14px;border-radius:10px}
  .card h3{font-size:18px}
  .card p{font-size:15px}

  .content{padding:12px 0;font-size:16px}

  footer .footer-inner{text-align:center;padding:12px 0}
}