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

body{
background:#ffffff;
color:#1f2937;
}

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

.header{
background:#0b1320;
}

.header-flex{
display:flex;
justify-content:space-between;
align-items:center;
padding:22px 0;
}

.logo{
font-size:22px;
font-weight:700;
color:#e5e7eb;
}

.logo span{
color:#22d3ee;
}

nav a{
color:#e5e7eb;
text-decoration:none;
margin-left:18px;
font-size:15px;
}

.btn-nav{
background:#22d3ee;
color:#0b1320;
padding:8px 16px;
border-radius:6px;
font-weight:600;
}

.hero{
background:linear-gradient(135deg,#0b1320,#020617);
color:#ffffff;
padding:90px 0;
}

.hero-grid{
display:grid;
grid-template-columns:1.2fr 0.8fr;
gap:40px;
align-items:center;
}

.hero h1{
font-size:42px;
margin-bottom:20px;
}

.hero p{
font-size:17px;
margin-bottom:26px;
max-width:520px;
}

.btn-main{
background:#22d3ee;
color:#0b1320;
padding:14px 28px;
border-radius:8px;
text-decoration:none;
font-weight:700;
}

.hero-box{
background:#ffffff;
color:#0b1320;
padding:30px;
border-radius:12px;
box-shadow:0 12px 30px rgba(0,0,0,.25);
}

.hero-box ul{
list-style:none;
}

.hero-box li{
margin-bottom:12px;
font-weight:600;
}

.section{
padding:80px 0;
}

.section h2{
text-align:center;
font-size:34px;
margin-bottom:40px;
}

.center{
text-align:center;
max-width:720px;
margin:auto;
font-size:17px;
}

.grid{
display:grid;
grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
gap:30px;
}

.card{
background:#f8fafc;
padding:30px;
border-radius:14px;
box-shadow:0 6px 20px rgba(0,0,0,.06);
}

.alt{
background:#f1f5f9;
}

.dark{
background:#020617;
color:#ffffff;
}

.form{
max-width:520px;
margin:auto;
}

.form input,
.form textarea{
width:100%;
padding:12px;
margin-bottom:14px;
border:none;
border-radius:6px;
}

.form button{
width:100%;
padding:14px;
background:#22d3ee;
border:none;
color:#0b1320;
font-size:16px;
font-weight:700;
border-radius:6px;
cursor:pointer;
}

.footer{
background:#0b1320;
color:#9ca3af;
text-align:center;
padding:25px 0;
font-size:14px;
}

@media(max-width:900px){
.hero-grid{
grid-template-columns:1fr;
}
.hero h1{
font-size:34px;
}
}