body {
    font-family: Arial, sans-serif;
    background: #f3f6f9;
    margin: 0;
    padding: 20px;
    color: #222;
}

h1 {
    font-size: 28px;
}

nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 25px;
}

nav a {
    padding: 10px 14px;
    background: #1f7a4d;
    color: white;
    text-decoration: none;
    border-radius: 6px;
}

.cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
}

.card {
    background: white;
    padding: 20px;
    border-radius: 10px;
    border-left: 5px solid #1f7a4d;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.card p {
    font-size: 22px;
    font-weight: bold;
}

form {
    background: white;
    padding: 20px;
    border-radius: 10px;
    max-width: 500px;
    margin-bottom: 25px;
    box-shadow