body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #0a0a0a;
    color: #e0f7fa;
}
header {
    background-color: #1a1a1a;
    padding: 20px 0;
    text-align: center;
}
header h1 {
    margin: 0;
    font-size: 2.5em;
}
nav ul {
    list-style: none;
    padding: 0;
}
nav ul li {
    display: inline;
    margin: 0 15px;
}
nav ul li a {
    color: #00bcd4;
    text-decoration: none;
}
.hero {
    text-align: center;
    padding: 100px 20px;
    background-color: #121212;
}
.hero h2 {
    font-size: 2.5em;
    margin-bottom: 10px;
}
.hero p {
    font-size: 1.2em;
    margin-bottom: 20px;
}
.btn {
    padding: 10px 25px;
    background-color: #00bcd4;
    color: #000;
    text-decoration: none;
    border-radius: 5px;
}
.content-section {
    padding: 40px 20px;
    max-width: 800px;
    margin: auto;
}
footer {
    text-align: center;
    padding: 20px;
    background-color: #1a1a1a;
    color: #ccc;
}