*{
margin:0;
padding:0;
box-sizing:border-box;
font-family:'Segoe UI',sans-serif;
scroll-behavior:smooth;
}

body{
background:#f4f7fb;
color:#222;
}

header{
position:fixed;
top:0;
width:100%;
background:rgba(7,15,30,0.9);
backdrop-filter:blur(12px);
z-index:1000;
}

nav{
display:flex;
justify-content:space-between;
align-items:center;
padding:18px 8%;
}

.logo{
font-size:30px;
font-weight:bold;
color:#fff;
}

nav ul{
display:flex;
gap:25px;
list-style:none;
}

nav ul li a{
color:#fff;
text-decoration:none;
transition:0.3s;
}

nav ul li a:hover{
color:#7fd1ff;
}

.hero{
height:100vh;
display:flex;
align-items:center;
justify-content:center;
text-align:center;
background-size:cover;
background-position:center;
position:relative;
padding:0 10%;
}

.overlay{
position:absolute;
width:100%;
height:100%;
background:rgba(0,0,0,0.55);
}

.hero-content{
position:relative;
z-index:2;
max-width:900px;
color:#fff;
}

.hero-content h1{
font-size:72px;
margin-bottom:20px;
line-height:1.2;
}

.hero-content p{
font-size:20px;
line-height:1.8;
margin-bottom:35px;
}

.btn{
display:inline-block;
padding:15px 30px;
border-radius:40px;
background:#7fd1ff;
color:#111;
font-weight:bold;
text-decoration:none;
}

.section{
padding:100px 10%;
}

.section-title{
text-align:center;
font-size:48px;
margin-bottom:20px;
}

.section-sub{
text-align:center;
max-width:900px;
margin:auto;
line-height:1.8;
color:#666;
margin-bottom:60px;
}

.cards{
display:grid;
grid-template-columns:repeat(auto-fit,minmax(300px,1fr));
gap:30px;
}

.card{
background:#fff;
border-radius:20px;
overflow:hidden;
box-shadow:0 10px 25px rgba(0,0,0,0.08);
transition:0.3s;
}

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

.card img{
width:100%;
height:220px;
object-fit:cover;
}

.card-content{
padding:25px;
}

.card-content h3{
margin-bottom:15px;
font-size:28px;
}

.card-content p{
line-height:1.8;
color:#666;
margin-bottom:15px;
}

.features{
padding-left:20px;
line-height:1.9;
color:#444;
}

.contact-form{
max-width:750px;
margin:auto;
background:#fff;
padding:40px;
border-radius:20px;
box-shadow:0 10px 30px rgba(0,0,0,0.08);
}

.contact-form input,
.contact-form textarea{
width:100%;
padding:16px;
margin-bottom:20px;
border:1px solid #ddd;
border-radius:10px;
font-size:16px;
}

.contact-form textarea{
height:160px;
resize:none;
}

.contact-form button{
padding:16px 28px;
background:#0d6efd;
color:#fff;
border:none;
border-radius:10px;
font-size:16px;
cursor:pointer;
}

.banner{
background:linear-gradient(135deg,#0b1a33,#173a74);
color:#fff;
padding:80px 10%;
text-align:center;
}

.banner h2{
font-size:46px;
margin-bottom:20px;
}

footer{
background:#111827;
color:#fff;
padding:35px;
text-align:center;
}

@media(max-width:900px){

.hero-content h1{
font-size:44px;
}

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

nav ul{
flex-wrap:wrap;
justify-content:center;
}

.section-title{
font-size:36px;
}
}