### style.css

```css
*{
margin:0;
padding:0;
box-sizing:border-box;
font-family:Segoe UI,sans-serif;
}

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

.container{
width:90%;
max-width:1200px;
margin:auto;
}

header{
background:#0d47a1;
color:white;
padding:15px 0;
}

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

nav a{
color:white;
text-decoration:none;
margin-left:20px;
font-weight:600;
}

.hero{
height:80vh;
background:linear-gradient(rgba(0,0,0,.6),rgba(0,0,0,.6)),
url('https://images.unsplash.com/photo-1509062522246-3755977927d7');
background-size:cover;
background-position:center;
display:flex;
justify-content:center;
align-items:center;
text-align:center;
color:white;
}

.hero h2{
font-size:3rem;
margin-bottom:20px;
}

.btn{
display:inline-block;
padding:12px 25px;
background:#ff9800;
color:white;
text-decoration:none;
border-radius:5px;
}

section{
padding:60px 0;
}

.stats{
background:#f2f6ff;
}

.stats-grid{
display:grid;
grid-template-columns:repeat(auto-fit,minmax(200px,1fr));
gap:20px;
text-align:center;
}

.course-grid{
display:grid;
grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
gap:25px;
}

.card{
background:white;
padding:25px;
border-radius:10px;
box-shadow:0 5px 15px rgba(0,0,0,.1);
}

.contact-form{
max-width:700px;
margin:auto;
}

.contact-form input,
.contact-form textarea{
width:100%;
padding:12px;
margin-bottom:15px;
border:1px solid #ddd;
}

.contact-form button{
padding:12px 25px;
background:#0d47a1;
color:white;
border:none;
cursor:pointer;
}

footer{
background:#0d47a1;
color:white;
text-align:center;
padding:20px;
}

@media(max-width:768px){
header .container{
flex-direction:column;
}

.hero h2{
font-size:2rem;
}
}
```