*{
margin:0;
padding:0;
box-sizing:border-box;
}

body{
font-family:Arial,sans-serif;
background:#ffffff;
color:#111111;
line-height:1.7;
}

.container{
width:90%;
max-width:1000px;
margin:auto;
}

header{
padding:50px 0;
border-bottom:1px solid #e5e5e5;
}

h1{
font-size:42px;
margin-bottom:10px;
}

.subtitle{
color:#666;
font-size:18px;
}

section{
padding:50px 0;
}

h2{
margin-bottom:20px;
font-size:30px;
}

.hero p{
margin-bottom:20px;
}

.card{
background:#fafafa;
padding:25px;
border-radius:12px;
border:1px solid #e8e8e8;
}

.card ul{
margin-left:20px;
}

.box{
margin-top:20px;
padding:15px;
background:#f5f5f5;
border-left:4px solid #111;
}

footer{
padding:40px 0;
border-top:1px solid #e5e5e5;
text-align:center;
color:#666;
margin-top:50px;
}

@media(max-width:768px){

h1{
font-size:32px;
}

h2{
font-size:24px;
}

}