body {
    font-family: Arial, sans-serif;
    padding: 20px;
    background: #f7f7f7;
}

h1 {
    margin-bottom: 20px;
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 15px;
}

.card {
    background: white;
    padding: 15px;
    border-radius: 8px;
    text-align: center;
    font-weight: bold;
}

.card span {
    display: block;
    margin-top: 8px;
    font-size: 20px;
}

.highlight {
    background: #e8fff1;
    border: 2px solid #2ecc71;
}

#alerts {
    margin-top: 25px;
}

.alert {
    background: #ffecec;
    border: 1px solid #ff5c5c;
    padding: 15px;
    border-radius: 6px;
}

.ok {
    background: #e9fbe9;
    border: 1px solid #2ecc71;
    padding: 15px;
    border-radius: 6px;
}

.note {
    margin-top: 30px;
    color: #555;
}