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

body{
    background:#000;
    color:#fff;
    font-family:Arial, sans-serif;
}

.header{
    width:100%;
    padding:25px 8%;
    display:flex;
    justify-content:space-between;
    align-items:center;
    border-bottom:1px solid rgba(255,255,255,.1);
}

.logo img{
    height:50px;
}

nav{
    display:flex;
    gap:40px;
}

nav a{
    text-decoration:none;
    color:white;
    letter-spacing:2px;
}

.start-btn{
    background:#dfff00;
    color:#000;
    padding:15px 30px;
    border-radius:50px;
    text-decoration:none;
    font-weight:700;
}

.hero{
    min-height:80vh;
    display:flex;
    flex-direction:column;
    justify-content:center;
    align-items:center;
    text-align:center;
    padding:40px;
}

.hero h1{
    font-size:70px;
    margin-bottom:20px;
}

.hero p{
    color:#aaa;
    margin-bottom:40px;
}

.download-box{
    display:flex;
    gap:15px;
    width:100%;
    max-width:800px;
}

.download-box input{
    flex:1;
    height:60px;
    padding:0 20px;
    background:#111;
    border:1px solid #333;
    color:white;
    border-radius:10px;
}

.download-box button{
    padding:0 30px;
    background:#dfff00;
    border:none;
    border-radius:10px;
    cursor:pointer;
    font-weight:bold;
}

#result{
    margin-top:30px;
}