*{
margin:0;
padding:0;
box-sizing:border-box;
font-family:Arial,Helvetica,sans-serif;
}

body{
background:#f4f8fc;
color:#333;
line-height:1.6;
}

nav{
display:flex;
justify-content:space-between;
align-items:center;
padding:18px 60px;
background:#0056b3;
position:sticky;
top:0;
z-index:1000;
box-shadow:0 3px 10px rgba(0,0,0,.15);
}

.logo{
font-size:28px;
font-weight:bold;
color:white;
}

nav ul{
display:flex;
list-style:none;
gap:30px;
}

nav ul li a{
text-decoration:none;
color:white;
font-weight:bold;
transition:.3s;
}

nav ul li a:hover{
color:#ffd43b;
}

.hero{
padding:100px 20px;
text-align:center;
background:linear-gradient(135deg,#0066cc,#00a8ff);
color:white;
}

.hero h1{
font-size:55px;
margin-bottom:20px;
}

.hero p{
max-width:850px;
margin:auto;
font-size:20px;
margin-bottom:35px;
}

.hero button{
padding:15px 35px;
font-size:18px;
border:none;
border-radius:10px;
background:white;
color:#0066cc;
cursor:pointer;
font-weight:bold;
transition:.3s;
}

.hero button:hover{
transform:scale(1.08);
}

section{
padding:70px 60px;
}

section h2{
text-align:center;
font-size:38px;
margin-bottom:40px;
color:#0056b3;
}

.module-grid{
display:grid;
grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
gap:30px;
}

.module-card{
background:white;
padding:30px;
border-radius:18px;
box-shadow:0 8px 25px rgba(0,0,0,.12);
transition:.35s;
text-align:center;
}

.module-card:hover{
transform:translateY(-10px);
}

.icon{
font-size:60px;
margin-bottom:20px;
}

.module-card h3{
margin-bottom:15px;
color:#0056b3;
}

.module-card p{
margin-bottom:25px;
}

.module-card button{
padding:12px 25px;
background:#0066cc;
color:white;
border:none;
border-radius:8px;
cursor:pointer;
font-size:16px;
transition:.3s;
}

.module-card button:hover{
background:#004999;
}

#about,
#contact{
background:white;
margin-top:30px;
border-radius:20px;
box-shadow:0 5px 20px rgba(0,0,0,.08);
}

#about p,
#contact p{
max-width:900px;
margin:auto;
text-align:center;
font-size:18px;
}

footer{
background:#0056b3;
color:white;
text-align:center;
padding:25px;
margin-top:50px;
font-size:17px;
}

@media(max-width:768px){

nav{
flex-direction:column;
padding:20px;
}

nav ul{
flex-direction:column;
margin-top:15px;
gap:15px;
}

.hero h1{
font-size:38px;
}

.hero p{
font-size:17px;
}

section{
padding:50px 20px;
}

}