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

body{
    background:#111827;
    color:white;
}

nav{
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:20px 80px;
    background:#1f2937;
}

nav ul{
    display:flex;
    gap:20px;
    list-style:none;
}

nav a{
    color:white;
    text-decoration:none;
}

header{
    text-align:center;
    padding:120px 20px;
}

header h1{
    font-size:48px;
}

header p{
    margin:20px 0;
}

button{
    padding:12px 24px;
    border:none;
    background:#2563eb;
    color:white;
    border-radius:8px;
    cursor:pointer;
}

section{
    max-width:900px;
    margin:auto;
    padding:60px 20px;
}

.card{
    background:#1f2937;
    padding:20px;
    margin-top:20px;
    border-radius:10px;
}

footer{
    text-align:center;
    padding:30px;
    background:#1f2937;
}