.leftNavWrap {
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    width: 240px;
    background-color: #fff;
    overflow-y: auto;
    transform: translateY(-130px);
    z-index: auto;
    border-radius: 10px 10px 0 0;
}

.leftNavWrap .leftNavTitle {
    padding: 77px 10px;
    font-size: 28px;
    font-weight: bold;
    line-height: 1em;
    letter-spacing: -0.30px;
    color: #ffffff;
    text-align: center;
    border-radius: 10px 10px 0 0;
    background-color: #154396;
    overflow: hidden;
}

.leftNavMenu {
    margin-top: 10px;
    padding: 0 10px;
    list-style: none;
}

.leftNavMenu li.leftNavItem {
    position: relative;
    margin-bottom: 10px;
}

.leftNavMenu li.leftNavItem .leftNavHeader {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    /* border: 1px solid #666666; */
    border: 1px solid #000000;
    border-radius: 5px;
}

.leftNavMenu li.leftNavItem .leftNavHeader .leftNavLink {
    display: block;
    font-size: 16px;
    font-weight: 500;
    line-height: 1em;
    /* color: #666666; */
    color: #000000;
    padding: 21px 20px;
    text-decoration: none;
    flex: 1;
}

.leftNavMenu li.leftNavItem .leftNavHeader .leftNavToggleBtn {
    margin-right: 20px;
    width: 24px;
    height: 24px;
    border: 0;
    border-radius: 50%;
    background-color: #666666;
    color: white;
    text-indent: 0;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 12px;
}

.leftNavMenu li.leftNavItem .leftNavHeader .leftNavToggleBtn:before {
    content: "▶";
}

.leftNavMenu li.leftNavItem-open .leftNavHeader {
    border: 1px solid #154396;
}

.leftNavMenu li.leftNavItem-open .leftNavHeader .leftNavLink {
    color: #154396;
    font-weight: bold;
}

.leftNavMenu li.leftNavItem-open .leftNavHeader .leftNavToggleBtn {
    background-color: #154396;
    transform: rotate(90deg);
}

.leftNavMenu li.leftNavItem-open .leftNavHeader .leftNavToggleBtn:focus {
    outline-style: dashed;
    outline-width: 2px;
}

.leftNavMenu .leftNavSubMenu {
    display: none;
    position: relative;
    padding: 12px 10px 12px 20px;
    border-radius: 0 0 10px 10px;
    background: #f7f7f7;
    list-style: none;
}

.leftNavMenu li.leftNavItem-open .leftNavSubMenu {
    display: block;
}

.leftNavMenu .leftNavSubMenu li {
    padding: 5px 0;
}

.leftNavMenu .leftNavSubMenu li .leftNavSubLink {
    display: block;
    position: relative;
    padding: 5px 5px 5px 15px;
    font-size: 16px;
    line-height: 1em;
    font-weight: normal;
    letter-spacing: -0.30px;
    color: #353535;
    text-decoration: none;
}

.leftNavMenu .leftNavSubMenu li .leftNavSubLink:before {
    content: "•";
    position: absolute;
    top: 50%;
    left: 5px;
    transform: translateY(-50%);
    color: #353535;
}

.leftNavMenu .leftNavSubMenu li .leftNavSubLink:hover,
.leftNavMenu .leftNavSubMenu li .leftNavSubLink:active,
.leftNavMenu .leftNavSubMenu li .leftNavSubLink.active {
    color: #154396;
    text-decoration: underline;
}

.leftNavMenu .leftNavSubMenu li .leftNavSubLink:hover:before,
.leftNavMenu .leftNavSubMenu li .leftNavSubLink:active:before,
.leftNavMenu .leftNavSubMenu li .leftNavSubLink.active:before {
    color: #154396;
}

/* 메인 컨텐츠 영역 */
.mainContent {
    flex: 1;
    margin-left: 240px;
    padding: 40px;
    font-size: 15px;
}

/* 반응형 */
/* 1300px 이하에서는 네비바 완전 숨김 */
@media screen and (max-width: 1300px) {
    .leftNavWrap {
        display: none !important;
    }

    .mainContent {
        margin-left: 0;
        padding: 20px;
    }

    .left-nav-toggle {
        display: none !important;
    }
}