.mrkni-kategorie-uvod {
    max-width: 1000px;
    margin: 2rem auto 1rem;
    padding: 2rem;
    background: #f9fafb;
    border-radius: 14px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    text-align: center;
    transition: all 0.4s ease;
}
.mrkni-kategorie-uvod p {
    font-size: 1.5rem;
    margin: 0 0 1rem;
    color: #1f2937;
}
.mrkni-kategorie-uvod strong {
    color: #1d4ed8;
}
.mrkni-kategorie-uvod a.mrkni-highlight {
    display: inline-block;
    margin-top: 1rem;
    font-weight: bold;
    text-decoration: none;
    transition: color 0.3s;
}
.mrkni-header-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    animation: spinIcon 3s infinite linear;
}
@keyframes spinIcon {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}