    .page-heading {
        background-repeat: no-repeat;
        background-position: center center;
        background-size: cover;
        padding-top: 80px;
        padding-bottom: 130px;
        text-align: center;
        background-color: #2a2a2a;
    }

    .card-category .card-header {
        cursor: pointer;
    }

    section {
        margin-top: 70px;
    }

       /* ================================
   SIDEBAR CATEGORY
================================ */
.card-category {
    border: none;
    border-radius: 14px;
    background: #ffffff;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0,0,0,.06);
    transition: all .25s ease;
}

.card-category + .card-category {
    margin-top: 10px;
}

/* ================================
   HEADER
================================ */
.card-category .card-header {
    background: transparent;
    border: none;
    padding: 14px 18px;
    font-weight: 700;
    font-size: 14px;
    color: #111827;
    cursor: pointer;
    position: relative;
}

/* arrow icon */
.card-category .card-header::after {
    content: "▾";
    position: absolute;
    right: 18px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 12px;
    color: #9ca3af;
    transition: transform .3s ease;
}

/* rotate arrow when collapsed */
.card-category .card-header.collapsed::after {
    transform: translateY(-50%) rotate(-90deg);
}

/* ================================
   BODY
================================ */
.card-category .card-body {
    padding: 8px 18px 14px;
}

/* ================================
   LIST
================================ */
.card-category ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.card-category ul li {
    margin-bottom: 6px;
}

.card-category ul li:last-child {
    margin-bottom: 0;
}

/* ================================
   LINK
================================ */
.card-category ul li a {
    display: block;
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    color: #374151;
    text-decoration: none;
    transition: all .25s ease;
}

.card-category ul li a:hover {
    background: #f1f5f9;
    color: #1e40af;
    transform: translateX(4px);
}

/* ================================
   SEARCH
================================ */
#search-category {
    border-radius: 12px;
    font-size: 13px;
    padding: 10px 14px;
    border: 1px solid #e5e7eb;
}

#search-category:focus {
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37,99,235,.15);
}
