.item-db-shell .metric-label { color: #6c757d; font-size: 0.875rem; }
.item-db-shell .metric-value { font-size: 1.35rem; font-weight: 700; }
.item-db-shell .result-panel { min-height: 132px; }
.item-db-shell .chart-frame { min-height: 360px; background: #f8f9fa; }
.item-db-shell .chart-frame img { max-width: 100%; height: auto; display: block; margin: 0 auto; }
.item-db-shell .copy-btn { min-width: 42px; }
@media (max-width: 576px) {
    .item-db-shell .metric-value { font-size: 1.1rem; }
    .item-db-shell .chart-frame { min-height: 240px; }
}