.tooltip-articulo {
    position: relative;
    color: #000000;
    font-weight: normal;
    cursor: help;
    border-bottom: 1px dotted #000000;
}

.tooltip-contenido {
    position: absolute;
    left: 50%;
    top: calc(100% + 12px);
    transform: translateX(-50%);

    width: 380px;
    max-width: 90vw;
    padding: 18px 20px;

    background: #E3F2FD;
    color: #000000;
    font-weight: normal;

    border: 1px solid #d8e0e7;
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.18);

    font-size: 0.90rem;
    line-height: 1.5;

    opacity: 0;
    visibility: hidden;
    pointer-events: none;

    transition: opacity 0.2s ease,
                transform 0.2s ease;

    z-index: 1000;
}

.tooltip-contenido strong:first-child {
    display: block;
    margin-bottom: 12px;
    color: #000000;
    font-size: 1rem;
    font-weight: normal;
}

.tooltip-contenido span {
    display: block;
    margin-top: 8px;
    font-weight: normal;
}

.tooltip-contenido b {
    color: #000000;
    font-weight: normal;
}

.tooltip-articulo:hover .tooltip-contenido {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(3px);
}