*{box-sizing:border-box}
body{font-family:Arial,Helvetica,sans-serif;margin:0;background:#f5f6fb;color:#222}
header{background:white;border-bottom:1px solid #eaeaea;position:sticky;top:0;z-index:10}
.container{max-width:1200px;margin:auto;padding:20px}
.nav{display:flex;justify-content:space-between;align-items:center}
.logo{font-weight:700;font-size:22px;color:#0b3c6d}
.menu a{margin-left:20px;text-decoration:none;color:#333;font-size:15px}
.hero{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;padding:80px 20px;background:linear-gradient(135deg,#eef2ff,#ffffff)}
.hero h1{font-size:46px;margin-bottom:10px}
.hero p{color:#555;font-size:18px}
.btn{background:#0b6efd;color:white;padding:14px 26px;border-radius:8px;text-decoration:none;display:inline-block;margin-top:20px;border:none}
.products{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:25px;margin-top:40px}
.product{background:white;padding:20px;border-radius:12px;box-shadow:0 10px 25px rgba(0,0,0,0.06);text-align:center}
.product img{max-width:100%;border-radius:10px}
.price{font-size:20px;font-weight:700;margin:10px 0}
button{background:#111;color:white;border:none;padding:12px 18px;border-radius:6px;cursor:pointer}
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px;margin-top:40px}
.card{background:white;padding:25px;border-radius:10px;box-shadow:0 6px 18px rgba(0,0,0,0.05)}
.reviews{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px;margin-top:40px}
.review{background:white;padding:20px;border-radius:10px;box-shadow:0 6px 18px rgba(0,0,0,0.05)}
.newsletter{background:#0b3c6d;color:white;text-align:center;padding:60px 20px;margin-top:60px}
.newsletter input{padding:12px;border:none;border-radius:6px;margin-right:10px;width:220px}
.footer{background:#111;color:#bbb;text-align:center;padding:40px;margin-top:0}
@media(max-width:800px){
.hero{grid-template-columns:1fr}
.hero h1{font-size:34px}
}