/* styles.css - Mobile-first responsive */
:root{
  --bg:#0f1724;
  --card:#0b1220;
  --accent:#00a8ff;
  --muted:#94a3b8;
  --white:#ffffff;
  --radius:12px;
  --container: 1100px;
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
}

*{box-sizing:border-box}
body{margin:0;background:#f7f8fb;color:#0b1020;line-height:1.45}
.container{max-width:var(--container);margin:0 auto;padding:16px}
.site-header{background:var(--white);border-bottom:1px solid #e6eef8;position:sticky;top:0;z-index:20}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 16px}
.brand{margin:0;font-size:18px;color:#0b1220}
.main-nav{display:none}
.menu-btn{background:transparent;border:0;font-size:20px}

/* Hero */
.hero{background:linear-gradient(180deg,#e6f7ff,white);padding:28px 0;border-bottom:1px solid #e8f2f8}
.hero h2{margin:0 0 8px;font-size:20px}
.hero p{margin:0 0 12px;color:var(--muted)}
.cta{display:inline-block;background:var(--accent);color:white;padding:10px 16px;border-radius:10px;text-decoration:none}

/* Features grid */
.features{padding:20px 0}
.grid{display:grid;grid-template-columns:1fr;gap:14px}
.card{background:white;padding:14px;border-radius:12px;box-shadow:0 6px 18px rgba(12,38,63,0.06)}
.card h3{margin:0 0 6px}

/* Article & products */
.article{padding:18px 0}
.lead{color:var(--muted)}
.product{background:#fff;border-radius:10px;padding:12px;margin:10px 0;box-shadow:0 6px 18px rgba(12,38,63,0.04)}
.buy-btn{display:inline-block;margin-top:8px;padding:8px 12px;background:var(--accent);color:white;border-radius:8px;text-decoration:none}
.affiliate-note{font-size:13px;color:var(--muted)}

/* Footer */
.site-footer{background:#0b1220;color:white;padding:18px;margin-top:18px}
.site-footer p{margin:6px 0;font-size:14px;color:#cbd5e1}

/* Desktop */
@media(min-width:800px){
  .main-nav{display:flex;gap:14px}
  .menu-btn{display:none}
  .grid{grid-template-columns:repeat(2,1fr)}
  .hero h2{font-size:28px}
}