.has-tooltip {
    position: relative;
    cursor: help;
    border-bottom: 1px dotted #666;
}

.has-tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 125%;
    left: 0;
    background: #333;
    color: #fff;
    padding: 6px 8px;
    border-radius: 4px;
    white-space: nowrap;
    font-size: 0.8125rem; /* 13px */
    opacity: 0;
    transform: translateY(6px);
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
    z-index: 999;
}

.has-tooltip:hover::after {
    opacity: 1;
    transform: translateY(0);
}