:root{
  --brand-blue:#4DB6E5;
  --brand-green:#7CE9A4;
  --muted:#6b7280;
  --max-width:1100px;
  --radius:10px;
  --container-padding:20px;
  font-size:16px;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
}
*{box-sizing:border-box}
body{margin:0;color:#222;background:#fff;line-height:1.5}
.container{max-width:var(--max-width);margin:0 auto;padding:var(--container-padding)}
.site-header{border-bottom:1px solid #eee;padding:14px 0;display:flex;justify-content:space-between;align-items:center}
.logo{font-weight:700;color:var(--brand-blue);text-decoration:none;font-size:1.1rem}
.nav a{margin-left:18px;color:var(--muted);text-decoration:none}
.hero{padding:40px 0}
.hero-grid{display:grid;grid-template-columns:1fr 320px;gap:32px;align-items:center}
.hero h1{font-size:2.1rem;margin:0 0 10px}
.lead{color:var(--muted);margin-bottom:16px}
.btn{display:inline-block;padding:10px 16px;border-radius:8px;text-decoration:none}
.btn-primary{background:var(--brand-blue);color:#fff}
.btn-outline{border:1px solid var(--brand-blue);color:var(--brand-blue);background:transparent}
.features{display:flex;gap:18px;margin:30px 0}
.feature-card{flex:1;padding:18px;border:1px solid #f0f4f8;border-radius:10px}
.top-articles .grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}
.card{border-radius:10px;overflow:hidden;border:1px solid #f0f4f8;padding:12px}
.card img{width:100%;height:140px;object-fit:cover;border-radius:8px}
.newsletter{background:linear-gradient(180deg,var(--brand-green),#e6fff2);padding:28px;border-radius:12px;margin:30px 0}
.newsletter input[type="email"]{padding:10px;border-radius:8px;border:1px solid #ddd;margin-right:8px;width:60%}
footer{padding:20px 0;color:var(--muted);font-size:.9rem;text-align:center;border-top:1px solid #eee}
.article{padding:28px 0}
.product-summary{display:flex;gap:18px;align-items:center}
.product-summary img{width:240px;border-radius:10px;object-fit:cover}
.comparison-table table{width:100%;border-collapse:collapse}
.comparison-table th, .comparison-table td{padding:10px;border:1px solid #eee;text-align:left}
.sticky-cta{position:sticky;top:20px;padding:12px;border:1px solid #eee;border-radius:8px;background:#fff}
@media(max-width:880px){
  .hero-grid{grid-template-columns:1fr}
  .product-summary{flex-direction:column}
  .newsletter input[type="email"]{width:100%;display:block;margin-bottom:8px}
}
.small{font-size:.9rem;color:var(--muted)}