*{
box-sizing:border-box;
}


body{

margin:0;

font-family:
-apple-system,
BlinkMacSystemFont,
"PingFang SC",
"Microsoft YaHei",
sans-serif;

color:#1d1d1f;

background:#f5f5f7;

}



.nav{

display:flex;

justify-content:space-between;

align-items:center;

padding:20px 10%;

background:white;

}



.nav a{

margin-left:20px;

text-decoration:none;

color:#1d1d1f;

}



.hero{

padding:120px 10% 80px;

text-align:center;

}



.hero h1{

font-size:64px;

margin:0;

}



.hero h2{

font-size:32px;

font-weight:400;

margin-top:30px;

}



.hero p{

font-size:20px;

color:#6e6e73;

}



.section{

padding:80px 10%;

text-align:center;

}



.section h2{

font-size:40px;

}



.section p{

font-size:18px;

line-height:1.8;

color:#6e6e73;

}



.product-img{

width:340px;

height:180px;


margin:50px auto;


background:

linear-gradient(
145deg,
#e5e5e5,
#888
);


border-radius:28px;


display:flex;

align-items:center;

justify-content:center;


color:#111;

font-size:32px;

font-weight:bold;


letter-spacing:2px;


box-shadow:

0 25px 60px rgba(0,0,0,.18);

}





.cards{

display:flex;

gap:20px;

justify-content:center;

flex-wrap:wrap;

}




.card{

background:white;

padding:30px;

border-radius:20px;

width:240px;

}



.card h3{

font-size:22px;

}




.spec{

background:white;

padding:30px;

border-radius:20px;

max-width:600px;

margin:auto;

}




.faq{

max-width:700px;

margin:auto;

text-align:left;

}





.price{

font-size:50px;

font-weight:bold;

margin:40px;

}




.btn{

display:inline-block;

padding:14px 35px;

background:#111;

color:white;

border-radius:30px;

text-decoration:none;

}





@media(max-width:700px){


.hero h1{

font-size:42px;

}



.section h2{

font-size:30px;

}



.card{

width:100%;

}


}