body{
font-family: Arial, sans-serif;
margin:0;
color:#333;
}

.container{
width:90%;
max-width:1100px;
margin:auto;
}

header{
background:#111;
color:white;
padding:15px 0;
}

.header-flex{
display:flex;
justify-content:space-between;
align-items:center;
}

nav a{
color:white;
margin-left:20px;
text-decoration:none;
font-weight:bold;
}

.logo{
height:60px;
}

.hero{
background:#1d3c6a;
color:white;
text-align:center;
padding:80px 20px;
}

.hero h1{
font-size:48px;
margin-bottom:10px;
}

.section{
padding:60px 0;
text-align:center;
}

.gray{
background:#f4f4f4;
}

.dark{
background:#222;
color:white;
}

.grid{
display:grid;
grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
gap:20px;
margin-top:30px;
}

.card{
background:white;
padding:25px;
border-radius:8px;
box-shadow:0 2px 10px rgba(0,0,0,.1);
}

.btn{
display:inline-block;
margin:10px;
padding:12px 20px;
background:#ff6a00;
color:white;
text-decoration:none;
border-radius:6px;
font-weight:bold;
}

.btn-outline{
display:inline-block;
margin:10px;
padding:12px 20px;
border:2px solid white;
color:white;
text-decoration:none;
border-radius:6px;
font-weight:bold;
}

footer{
background:#111;
color:#aaa;
text-align:center;
padding:20px;
}