.ytb-ohm-header {
    background: #84CC16;
    color: #fff;
    font-size: 22px;
    font-weight: 700;
    padding: 16px 20px;
    border-radius: 8px 8px 0 0;
}

.ytb-ohm-card {
    background: #fff;
    border: 1px solid #E0E0E0;
    border-top: none;
    border-radius: 0 0 8px 8px;
    padding: 20px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.06);
    margin-bottom: 8px;
}

.ytb-ohm-intro {
    font-size: 14px;
    color: #556B2F;
    background: #F7FEE7;
    border: 1px solid #ECFCCB;
    border-radius: 6px;
    padding: 10px 14px;
    margin: 0 0 18px;
}

.ytb-ohm-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 14px;
}

.ytb-ohm-field label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: #3F6212;
    margin-bottom: 6px;
}
.ytb-ohm-field input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #CFD8DC;
    border-radius: 6px;
    font-size: 15px;
    box-sizing: border-box;
}
.ytb-ohm-field input:focus {
    outline: none;
    border-color: #84CC16;
}

.ytb-ohm-btn {
    margin-top: 18px;
    margin-right: 10px;
    background: #84CC16;
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
}
.ytb-ohm-btn:hover { background: #65A30D; }
.ytb-ohm-btn-secondary {
    background: #F1F5F9;
    color: #475569;
    border: 1px solid #CBD5E1;
}
.ytb-ohm-btn-secondary:hover { background: #E2E8F0; }

.ytb-ohm-error {
    margin-top: 16px;
    background: #FEF2F2;
    border: 1px solid #FECACA;
    color: #B91C1C;
    padding: 10px 14px;
    border-radius: 6px;
    font-size: 14px;
}

.ytb-ohm-result {
    margin-top: 20px;
    background: #F7FEE7;
    border: 1px solid #ECFCCB;
    border-radius: 8px;
    padding: 16px 18px;
}
.ytb-ohm-result-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px dashed #D9F99D;
    font-size: 15px;
}
.ytb-ohm-result-row:last-child { border-bottom: none; }
.ytb-ohm-result-row strong { color: #3F6212; }
.ytb-ohm-power-row strong { color: #65A30D; font-size: 17px; }

.ytb-ohm-table {
    width: 100%;
    border-collapse: collapse;
    margin: 8px 0 20px;
    font-size: 14.5px;
}
.ytb-ohm-table th, .ytb-ohm-table td {
    border: 1px solid #E0E0E0;
    padding: 9px 12px;
    text-align: left;
}
.ytb-ohm-table th {
    background: #F7FEE7;
    color: #3F6212;
    font-weight: 700;
}