body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background-color: #f4f6f8;
    color: #333;
}

header {
    background-color: #003366;
    color: white;
    padding: 25px;
    text-align: center;
}

.subtitle {
    font-size: 14px;
    opacity: 0.9;
}

main {
    padding: 30px;
    max-width: 1200px;
    margin: auto;
}

section {
    margin-bottom: 40px;
}

h2 {
    border-left: 5px solid #003366;
    padding-left: 10px;
    color: #003366;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
    margin-top: 15px;
}

.tile {
    background-color: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.08);
}

.tile h3 {
    margin-top: 0;
    color: #003366;
}

.download-btn {
    display: inline-block;
    margin-top: 12px;
    padding: 10px 16px;
    background-color: #003366;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-size: 14px;
}

.download-btn:hover {
    background-color: #0055aa;
}

footer {
    background-color: #e9ecef;
    text-align: center;
    padding: 15px;
    font-size: 13px;
}