.hc-calculator#hc-akis-hiz {
    background: linear-gradient(135deg, #e0f2f1 0%, #ffffff 100%);
    border: 1px solid #b2dfdb;
    border-radius: 15px;
    padding: 25px;
}

.hc-ah-input-group {
    margin-top: 10px;
    padding: 10px;
    background: rgba(0,0,0,0.02);
    border-radius: 8px;
}

.hc-ah-res-v {
    color: #00897b;
}

.hc-result-note {
    font-size: 0.85em;
    color: #546e7a;
    border-left: 4px solid #80cbc4;
    padding-left: 10px;
}