.controller-img {
    width: 100%;
    max-width: 280px;
    max-height: 320px;
    object-fit: cover;
    border-radius: 10px;
    display: block;
    margin-left: auto;
    margin-right: auto;
}
.sub-menu a.active {
    color: #0d6efd;
    font-weight: bold;
    border-bottom: 2px solid #0d6efd;
}

.sub-menu {
    background: #f8f9fa;
    border-bottom: 2px solid #e0e0e0;
    margin-bottom: 25px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.sub-menu ul {
    display: flex;
    flex-wrap: nowrap;
    list-style: none;
    padding: 0;
    margin: 0;
}

.sub-menu ul li {
    flex: 0 0 auto;
}

.sub-menu ul li a {
    display: block;
    padding: 12px 20px;
    font-weight: 600;
    text-decoration: none;
    color: #003366;
    white-space: nowrap;
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
}

.sub-menu ul li a:hover,
.sub-menu ul li a.active {
    color: #ffcc00;
    border-bottom-color: #ffcc00;
}

@media (max-width: 768px) {
    .sub-menu ul li a {
        padding: 10px 14px;
        font-size: 14px;
    }
}