.kzh-container {
    max-width: 500px;
    margin: 20px auto;
    padding: 20px;
    background: #f9f9f9;
    border-radius: 12px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    font-family: sans-serif;
}
.kzh-container h1 {
    font-size: 1.5rem;
    text-align: center;
}
.kzh-container form {
    display: flex;
    flex-direction: column;
}
.kzh-container label {
    margin-top: 10px;
}
.kzh-container input {
    padding: 10px;
    margin-top: 5px;
}
.kzh-container button {
    margin-top: 20px;
    padding: 10px;
    background-color: #2c7be5;
    color: white;
    border: none;
    cursor: pointer;
}
#kzh-hasil {
    margin-top: 10px;
    padding: 12px;
    background-color: #f0f9ff;
    border: 6px solid #cce7ff;
    font-size: 1.4em;
    font-weight: bold;
    color: #004085;
    border-radius: 6px;
}