body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f7f7f7;
    color: #1a1a1a;
}
header {
    background: #0b1f3a;
    color: white;
    padding: 20px;
}
header h1 { margin: 0; font-size: 22px; }
nav { margin-top: 10px; }
nav a {
    color: white;
    margin-right: 15px;
    text-decoration: none;
    font-weight: bold;
}
.container {
    max-width: 1000px;
    margin: auto;
    background: white;
    padding: 30px;
}
h2 { color: #0b1f3a; }
footer {
    background: #0b1f3a;
    color: white;
    text-align: center;
    padding: 15px;
    margin-top: 40px;
}
.card {
    border: 1px solid #ddd;
    padding: 15px;
    margin-bottom: 15px;
}