*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

body{
    font-family:Arial,Helvetica,sans-serif;
    background:#111;
    color:white;
    line-height:1.7;
}

.hero{
    height:70vh;
    background:linear-gradient(rgba(0,0,0,.6),rgba(0,0,0,.8)),
    url("https://images.unsplash.com/photo-1542751371-adc38448a05e?auto=format&fit=crop&w=1600&q=80");
    background-size:cover;
    background-position:center;
    display:flex;
    justify-content:center;
    align-items:center;
    text-align:center;
}

.overlay{
    padding:20px;
}

.hero h1{
    font-size:70px;
    margin-bottom:15px;
    color:#3ddc84;
}

.subtitle{
    font-size:24px;
    margin-bottom:35px;
    color:#ddd;
}

.button{
    display:inline-block;
    padding:15px 35px;
    background:#3ddc84;
    color:black;
    text-decoration:none;
    border-radius:8px;
    font-weight:bold;
    transition:.2s;
}

.button:hover{
    background:#63f7a6;
}

main{
    max-width:1100px;
    margin:auto;
    padding:60px 20px;
}

.card{
    background:#1d1d1d;
    margin-bottom:35px;
    padding:35px;
    border-radius:12px;
}

.card h2{
    margin-bottom:20px;
    color:#3ddc84;
}

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

.feature{
    background:#2a2a2a;
    padding:25px;
    border-radius:10px;
}

.feature h3{
    margin-bottom:10px;
}

ul{
    margin-left:20px;
}

li{
    margin-bottom:12px;
}

.cta{
    text-align:center;
    padding:60px 20px;
}

.cta h2{
    font-size:40px;
    margin-bottom:20px;
}

footer{
    text-align:center;
    padding:30px;
    background:#0a0a0a;
    color:#888;
}