.efficiency-table .peak-row {
    background-color: rgba(27, 75, 198, 0.07);
}

/* ── Spec grid ── */
.spec-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin: 1.5rem 0;
}

.spec-card {
    background-color: var(--bg-color);
    box-shadow: 0 0 0 2px var(--accent-color);
    padding: 0.9rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.spec-card .spec-label {
    font-size: 0.72rem;
    font-family: 'JetBrains Mono', monospace;
    color: var(--accent-color);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.spec-card .spec-value {
    font-size: clamp(0.9rem, 1.6vw, 1.1rem);
    font-weight: 700;
    color: var(--primary-color);
}

.spec-card .spec-note {
    font-size: 0.75rem;
    color: #666;
    line-height: 1.3;
}

@media (max-width: 768px) {
    .spec-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}