.hac-container {
    padding: 20px;
    border: 2px solid #ccc;
    border-radius: 3px;
    box-sizing: border-box;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    max-width: 100%;
    width: 1024px;
    margin: 0 auto;
    text-align: center;
}

.hac-container h2 {
    margin-top: 0;
    font-size: 28px;
    border-bottom: 1px solid #999;
    padding-bottom: 10px;
}

.hac-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
    align-items: center;
    margin-bottom: 20px;
}

.hac-input-row,
.hac-dropdown-row {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    justify-content: center;
    width: 100%;
}

.hac-form input,
.hac-form select {
    padding: 10px;
    border: 1px solid #999;
    border-radius: 3px;
    background: #fff;
}

.hac-form input {
    width: 150px;
}

.hac-form select {
    width: 220px;
}

#hac-result {
    font-weight: normal;
    padding: 10px;
    border: 1px solid #999;
    border-radius: 3px;
}

.hac-credit {
    font-size: 0.9em;
}

@media (max-width: 768px) {
    .hac-form input,
    .hac-form select {
        width: 100%;
    }
}