.ob-tooltip-portal {
    position: fixed;
    z-index: 2000;
    display: none;
    max-width: min(300px, calc(100vw - 20px));
    padding: 0.55rem 0.75rem;
    border-radius: 8px;
    background: #0f172a;
    color: #f1f5f9;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    font-size: 0.74rem;
    font-weight: 400;
    line-height: 1.5;
    text-align: left;
    white-space: normal;
    box-shadow: 0 10px 28px rgba(15, 23, 42, 0.28);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.12s ease;
}

.ob-tooltip-portal--visible {
    opacity: 1;
}