body {
font-family: Arial, sans-serif;
margin: 0;
padding: 0;
background: #0f172a;
color: #e2e8f0;
}

header {
background: #020617;
padding: 20px;
text-align: center;
}

nav ul {
list-style: none;
padding: 0;
display: flex;
justify-content: center;
gap: 20px;
}

nav a {
color: #38bdf8;
text-decoration: none;
}

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

section {
margin-bottom: 30px;
}

footer {
text-align: center;
padding: 10px;
background: #020617;
}