.sub-content-header {
    width: 100%;
    height: 500px;
    display: flex;
    justify-content: center;
    align-items: center;
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center top;
    display: flex;
    flex-direction: column;
    align-items: center;
    color: #fff;
    position: relative;
}

.sub-content-header::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, .57);
}

.sub-content-header.company {
    background-image: url(/common/new/assets/image/sub/company/thumbnail.jpg);
}

.sub-content-header.business {
    background-image: url(/common/new/assets/image/sub/business/thumbnail.png);
}

.sub-content-header.product {
    background-image: url(/common/new/assets/image/sub/product/thumbnail.png);
}

.sub-content-header.management {
    background-image: url(/common/new/assets/image/sub/management/thumbnail.png);
}

.sub-content-header.service {
    background-image: url(/common/new/assets/image/sub/service/thumbnail.jpg);
}

.sub-content-header.system {
    background-image: url(/common/new/assets/image/sub/system/thumbnail.png);
}

.sub-content-title {
    margin-top: 100px;
    width: 1440px;
    padding-left: 10px;
    font-size: 48px;
    font-weight: 900;
    position: relative;
    text-shadow: 2px 4px 6px rgba(0, 0, 0, .47);
}

/*
.sub-content-title::after {
    content: '';
    position: absolute;
    bottom: -20px;
    left: 10px;
    height: 4px;
    background: linear-gradient(to right, #fff, transparent 25%);
    color: gold;
    font-size: 16px;
    line-height: 0;
    text-shadow: 0 0 6px rgba(255, 255, 255, 0.8);
    padding-left: 98%;
}
*/

.sub-content-detail {
    position: relative;
    color: #ededed;
    width: 1440px;
    margin-top: 20px;
    padding-left: 10px;
    font-size: 20px;
    line-height: 1.4;
    text-shadow: 2px 4px 6px rgba(0, 0, 0, .17);
}

.sub-content-detail b {
    font-size: 26px;
    color: #fff;
}

.sub-nav {
    width: 100%;
    border-bottom: 1px solid #dbdbdb;
}

.nav-list {
    position: relative;
    padding: 40px 20px;
    width: 1440px;
    height: 100%;
    transform: translateX(-50%);
    left: 50%;
    list-style: none;
    display: inline-flex;
    flex-direction: row;
    align-items: center;
    font-size: 16px;
    overflow-x: auto;
}

.nav-list-item {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 20px;
    font-size: 18px;
    flex: 0 0 auto;
    white-space: nowrap;
}

.nav-list-item b {
    color: #2474e4;
    position: relative;
    font-size: 19px;
}

.nav-list-item b::before {
    content: '●';
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 8px;
}

.nav-list-item a {
    text-decoration: none;
    color: #515151;
    transition: all .4s;
}

.nav-list-item a:hover {
    color: #2365b2;
}

.sub-content-container {
    width: 1440px;
    margin: 0 auto;
    min-height: 400px;
    display: flex;
    flex-direction: row;
    justify-content: left;
    align-items: start;
}

.sub-content-side-nav {
    padding-top: 40px;
    width: 250px;
    flex-shrink: 0;
}

.side-nav-title {
    list-style: none;
    font-size: 24px;
    position: relative;
    font-weight: 600;
    color: #4e4e4e;
}

.side-nav-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(to right, var(--primary-blue), transparent 50%);
    color: gold;
    font-size: 16px;
    line-height: 0;
    text-shadow: 0 0 6px rgba(255, 255, 255, 0.8);
    padding-left: 98%;
}

.sub-content-main {
    margin: 40px auto 0 auto;
    flex: 1;
    position: relative;
    padding-bottom: 80px;
    max-width: calc(100vw - 40px);
}

/* 회사소개 */
/* 인사말 */
.greeting-container {
    line-height: 1.8;
    margin-top: 60px;
    padding: 60px 0;
    border-top: 1px solid rgb(140, 140, 140);
}

.greeting-container .fixed-intro {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    animation: none;
}

.greeting-container .fixed-intro b {
    font-size: 1.3rem;
}

.greeting-container .fixed-intro b.red {
    color: rgb(255 93 93);
}

.greeting-container .line {
    font-size: 1.1rem;
    opacity: 0;
    animation: fadeIn 1s ease forwards;
    margin-bottom: 1.3rem;
    position: relative;
}

.greeting-container .line1 {
    animation-delay: 0.6s;
}

.greeting-container .line2 {
    animation-delay: 1.2s;
}

.greeting-container .line3 {
    animation-delay: 1.8s;
}

.greeting-container .line4 {
    animation-delay: 2.4s;
}

.greeting-container .line img {
    position: absolute;
    bottom: -80px;
    left: 50%;
    width: 200px;
    transform: translateX(-50%);
}

/* 연혁 */
.history-container {
    display: flex;
    flex-direction: row;
    min-height: 550px;
    margin: 0 auto;
}

.history-years {
    flex: 0 0 180px;
    display: flex;
    flex-direction: column;
    border-right: 1px solid #ddd;
}

.year-tab {
    padding: 12px 16px;
    cursor: pointer;
    border-left: 4px solid transparent;
    transition: background 0.3s, border-left 0.3s;
}

.year-tab.active {
    background: #f0f0f0;
    border-left: 4px solid #007BFF;
    font-weight: bold;
    font-size: 18px;
}

.history-details {
    flex: 1;
    padding: 0 20px;
}

.year-content {
    display: none;
    position: relative;
}

.year-content::before {
    content: "";
    position: absolute;
    top: 74px;
    left: 12px;
    width: 4px;
    height: calc(100% - 86px);
    background-color: #c1e4ff;
}

.year-content.active {
    display: block;
}

.event-year {
    font-size: 32px;
    margin-bottom: 20px;
    color: #8c8c8c;
    margin-left: 30px;
}

.event-year:not(:first-child) {
    margin-top: 40px;
}

.event {
    position: relative;
    margin-bottom: 10px;
    line-height: 1.6;
    height: 100%;
    display: flex;
    flex-direction: row;
    align-items: start;
}

.event span {
    margin-left: 34px;
    display: inline-block;
    min-width: 80px;
    color: #2c5977;
}

.event span b {
    font-size: 18px;
    font-weight: bold;
    color: #1a61c4;
    margin-right: 5px;
}

.event::after {
    content: '';
    position: absolute;
    top: 8px;
    left: 8px;
    width: 12px;
    height: 12px;
    background-color: #3399ff;
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(239, 247, 255, 0.4);
}

.event::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 28px;
    height: 28px;
    background-color: rgb(151 196 255 / 30%);
    border-radius: 50%;
}

/* 비전 경영이념 */
.vision-container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.vision-content-wrapper {
    position: relative;
    width: 90%;
    max-width: 1200px;
    display: flex;
    flex-direction: column;
    justify-content: left;
    align-items: center;
    margin-top: 40px;
    margin-bottom: 60px;
}

.vision-content-wrapper.vision img {
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    transition: opacity 1s ease, transform 1s ease;
}

.vision-content-wrapper.vision img:first-child {
    position: relative;
}

.vision-content-wrapper img[alt="KATEM 비전 레일"], .vision-content-wrapper img[alt="KATEM Vision – Rail"] {
    bottom: 0;
    left: 0;
    width: 100%;
    opacity: 1;
}

/* 기차 */
.vision-content-wrapper img[alt="KATEM 비전 KTX"], .vision-content-wrapper img[alt="KATEM Vision – KTX"] {
    transform: translateX(0);
    opacity: 1;
    transition: transform 5s ease;
}

.vision-content-wrapper img[alt="KATEM 비전 목표 1"],
.vision-content-wrapper img[alt="KATEM 비전 목표 2"],
.vision-content-wrapper img[alt="KATEM 비전 목표 3"],
.vision-content-wrapper img[alt="KATEM 비전 최종 목표"] {
    transform: translateY(5%) scale(0.95);
}

.vision-content-wrapper.vision img.active {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.vision-content-wrapper img.mobile {
    position: relative;
    width: 80%;
    max-width: 340px;
    display: none;
}

/* 기차 이동 */
.vision-content-wrapper img[alt="KATEM 비전 KTX"].move, .vision-content-wrapper img[alt="KATEM Vision – KTX"].move {
    transform: translateX(75%);
}

.vision-title {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    font-size: 36px;
    padding: 30px 0;
    letter-spacing: 4px;
    border-radius: 12px;
    width: 100%;
    margin-bottom: 20px;
    overflow: hidden;
}

.vision-title::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    height: 1px;
    width: 100%;
    background: linear-gradient(to right,
            transparent 0%,
            rgba(85, 134, 208, 1) 20%,
            rgba(85, 134, 208, 1) 80%,
            transparent 100%);
}

.vision-title::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    height: 1px;
    width: 100%;
    background: linear-gradient(to right,
            transparent 0%,
            rgba(85, 134, 208, 1) 20%,
            rgba(85, 134, 208, 1) 80%,
            transparent 100%);
}

.vision-title span:first-child {
    color: rgb(52, 108, 191);
    line-height: 1.6;
}

.vision-title span:last-child {
    color: rgb(101, 101, 101);
    font-size: 18px;
}

.vision-content-wrapper img {
    width: 100%;
    margin: 0 auto;
}

.vision-content-wrapper.mission img {
    width: 60%;
}

.vision-mission-wrapper {
    width: 100%;
    margin-top: 40px;
    margin-bottom: 80px;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
}

.vision-content-wrapper.mission .vision-mission-wrapper img {
    width: 30%;
    transition: all .4s;
}

.vision-content-wrapper.mission .vision-mission-wrapper img:hover {
    filter: brightness(1.05);
    transform: scale(1.05);
}

/* 인재상 */
.ideal-container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.ideal-title {
    animation: fadeIn 2s ease forwards;
    color: #515151;
    font-size: 26px;
    margin-bottom: 40px;
    text-align: center;
}

.ideal-img {
    position: relative;
    width: 50%;
}

.ideal-img img {
    width: 25%;
    position: absolute;
    top: 0;
    left: 0;
    transition: transform 0.4s ease, filter 0.4s ease, box-shadow 0.4s ease;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.15));
}

.ideal-img img:hover {
    transform: scale(1.1);
    filter: brightness(1.1) drop-shadow(0 4px 6px rgba(0, 0, 0, 0.25));
    z-index: 1;
}

.ideal-img .bck {
    position: static;
    width: 100%;
    opacity: 0;
    pointer-events: none;
}

.ideal-img img:nth-child(1) {
    width: 26%;
    top: 23%;
    left: 21%;
}

.ideal-img img:nth-child(2) {
    width: 26%;
    top: 42%;
    left: 47%;
}

.ideal-img img:nth-child(3) {
    width: 30%;
    top: 23%;
    left: 47%;
}

.ideal-img img:nth-child(4) {
    width: 28%;
    top: 70%;
    left: 29%;
}

.ideal-img img:nth-child(5) {
    width: 23%;
    top: 3%;
    left: 52%;
}

.ideal-img img:nth-child(6) {
    width: 33%;
    top: 70%;
    left: 57%;
}

.ideal-img img:nth-child(7) {
    width: 25%;
    top: 42%;
    left: 73%;
}

.ideal-img img:nth-child(8) {
    width: 50%;
    top: 3%;
    left: 2%;
}

/* 조직도 */
.organization-container {
    width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.organization-container img {
    width: 100%;
    max-width: 1200px;
    margin-bottom: 40px;
}

.organization-container img.mobile {
    width: 100%;
    display: none;
}

.contact-wrapper {
    width: 100%;
    display: flex;
    flex-direction: row;
    justify-content: center;
}

.contact-box {
    margin: 20px;
    border-radius: 12px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, .47);
    width: 240px;
    text-align: center;
    padding: 18px;
    background-color: #2f8ef3;
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 16px;
    letter-spacing: 1px;
    transition: all .4s;
}

.contact-box a {
    color: #eaeaea;
    text-decoration: none;
}

.contact-box:last-child {
    background-color: #474cd9;
}

.contact-box:hover {
    filter: brightness(1.1);
    transform: scale(1.05);
    cursor: pointer;
}

.contact-box span:first-child {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 20px;
    letter-spacing: 2px;
    color: #fff;
}


/* 제품소개 */
.img-list-container {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    width: 100%;
}

.product-list {
    position: relative;
    list-style: none;
    margin: 0 10px 30px;
    width: 310px;
    height: 160px;
    border-radius: 8px;
    background-size: cover;
    padding: 20px;
    color: #fff;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, .67);
    box-shadow: 0 4px 8px rgba(0, 0, 0, .27);
    transition: all .4s;
    cursor: pointer;
    filter: grayscale(1);
}

.product-list:hover {
    transform: scale(1.02);
}

.product-list::before {
    position: absolute;
    content: "";
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background-color: rgba(0, 0, 0, .17);
    border-radius: 8px;
}

.product-list.sel {
    filter: none;
}

.product-list h3 {
    position: relative;
    font-size: 16px;
    line-height: 1.6;
}

.product-list p {
    position: relative;
    font-size: 24px;
    font-weight: bold;
}

.product1 .product-list:nth-child(1) {
    background-image: url(/common/new/assets/image/sub/product/product1-thumbnail-01.png);
}

.product1 .product-list:nth-child(2) {
    background-image: url(/common/new/assets/image/sub/product/product1-thumbnail-02.png);
}

.product1 .product-list:nth-child(3) {
    background-image: url(/common/new/assets/image/sub/product/product1-thumbnail-03.png);
}

.product1 .product-list:nth-child(4) {
    background-image: url(/common/new/assets/image/sub/product/product1-thumbnail-04.png);
}

.product1 .product-list:nth-child(5) {
    background-image: url(/common/new/assets/image/sub/product/product1-thumbnail-05.png);
}

.product2 .product-list:nth-child(1) {
    background-image: url(/common/new/assets/image/sub/product/product1-thumbnail-01.png);
}


.detail-title {
    font-size: 24px;
    padding-bottom: 10px;
    color: rgb(41, 41, 41);
    font-weight: 400;
    border-bottom: 1px solid rgb(92, 92, 92);
}

.detail-content {
    display: flex;
    flex-direction: row;
    align-items: start;
    padding: 20px 0;
}

.detail-img-box {
    display: flex;
    flex-direction: column;
    position: relative;
}

.detail-img-main,
.product-detail-model {
    width: min(580px, 90vw);
    height: min(580px, 90vw);
    padding: 50px;
    box-shadow: 0 0 2px rgba(0, 0, 0, .87);
    margin-bottom: 20px;
}

.detail-img-subs-container {
    display: flex;
    flex-direction: row;
    justify-content: left;
    gap: min(10px, 2vw);
    width: min(580px, 90vw);
}

.detail-img-subs {
    width: min(185px, 28vw);
    height: min(185px, 28vw);
    box-shadow: 0 0 2px rgba(0, 0, 0, .87);
}

.detail-text-box {
    width: 100%;
    display: flex;
    flex-direction: column;
    padding: 0 20px;
}

.detail-text-set {
    display: flex;
    flex-direction: column;
    align-items: start;
}

.detail-text-set h3 {
    width: 100%;
    padding-bottom: 10px;
    margin-bottom: 6px;
    border-radius: 4px;
    position: relative;
}

.detail-text-set h3::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    height: 1px;
    width: 100%;
    background: linear-gradient(to right, rgba(0, 0, 0, 0.27), rgba(0, 0, 0, 0));
}

.detail-text-set ul {
    list-style: none;
    margin-bottom: 20px;
    line-height: 2;
}

.product-detail-container:not(.sel) {
    display: none;
}

/* 지속가능경영 */
.management-container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.devide-title {
    position: relative;
    text-align: center;
    padding: 34px 0;
    margin-bottom: 40px;
    font-size: 26px;
    width: 100%;
    border-top: 1px solid #8c8c8c;
    border-bottom: 1px solid #8c8c8c;
}

.management-main-img {
    width: 80%;
    margin-bottom: 80px;
}

.certificate-list {
    width: 100%;
    display: flex;
    flex-direction: row;
    justify-content: center;
    gap: 30px;
    align-items: center;
    flex-wrap: wrap;
}

.certificate-list-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
}

.certificate-list-item img {
    height: 320px;
    box-shadow: 0 4px 4px rgba(0, 0, 0, .27);
}

.certificate-list-item span {
    font-size: 18px;
    font-weight: bold;
    text-align: center;
}

.service-notice-container {
    border-radius: 12px;
    padding-bottom: 20px;
}

.service-notice-desc {
    font-size: 28px;
    font-weight: bold;
    color: #000;
}

/* 검색 영역 */
.service-notice-search {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.service-notice-search-form {
    display: flex;
    gap: 10px;
}

.service-notice-search-filter,
.service-notice-search-input,
.service-notice-search-btn {
    padding: 10px;
    font-size: 14px;
}

.service-notice-search-filter {
    width: 120px;
}

.service-notice-search-input {
    width: 200px;
    border: 1px solid #ccc;
    border-radius: 4px;
}

.service-notice-search-btn {
    background-color: #00c3ff;
    color: white;
    border: none;
    border-radius: 4px;
    font-weight: bold;
    cursor: pointer;
}

.service-notice-search-btn:hover {
    background-color: #005b96;
}

/* 리스트 헤더 */
.service-notice-table-header {
    display: flex;
    padding: 12px 0;
    border-top: 2px solid #003366;
    border-bottom: 1px solid #ccc;
    font-weight: bold;
    background: #f0f4f8;
    color: #003366;
}

.service-notice-header-content {
    flex: 1;
    text-align: center;
}

.service-notice-header-date {
    width: 100px;
    text-align: center;
}

.service-notice-header-author {
    width: 80px;
    text-align: center;
}

/* 리스트 항목 */
.service-notice-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.service-notice-item {
    display: flex;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid #eee;
}

.service-notice-content {
    flex: 1;
}

.service-notice-link {
    font-size: 15px;
    color: #005b96;
    text-decoration: none;
}

.service-notice-link:hover {
    text-decoration: underline;
    color: #00c3ff;
}

.service-notice-date {
    width: 100px;
    text-align: center;
    font-size: 14px;
    color: #777;
}

.service-notice-author {
    width: 80px;
    text-align: center;
    font-size: 14px;
    color: #666;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 페이징 */
.service-notice-pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 30px;
}

.service-notice-page-btn {
    padding: 6px 12px;
    border: 1px solid #ccc;
    background: white;
    cursor: pointer;
    border-radius: 4px;
    font-size: 14px;
}

.service-notice-page-btn.active {
    background-color: #00c3ff;
    color: white;
    border-color: #00c3ff;
}

.service-notice-page-btn:hover:not(.active) {
    background-color: #f0faff;
}

.sub-inquiry-container {
    width: 100%;
    margin: auto;
    padding: 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.sub-inquiry-field {
    margin-bottom: 18px;
    width: 100%;
}

.sub-inquiry-field label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    color: #333;
}

.sub-inquiry-field input,
.sub-inquiry-field textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 1rem;
}

.sub-inquiry-field input[type="file"] {
    padding: 6px;
}

.sub-inquiry-flex {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.sub-inquiry-flex .sub-inquiry-half {
    flex: 1 1 48%;
}

.sub-inquiry-button {
    width: 200px;
    background-color: #627ec4;
    color: white;
    padding: 14px;
    font-size: 1.1rem;
    border: none;
    border-radius: 24px;
    cursor: pointer;
    margin-top: 10px;
    transition: all .4s;
}

.sub-inquiry-button:hover {
    background-color: #4d7baf;
}


/*사업 소개*/
.business-list {
    position: relative;
    list-style: none;
    margin: 0 10px 30px;
    width: calc(33.333% - 20px);
    max-width: 100%;
    height: 200px;
    border-radius: 8px;
    background-size: cover;
    background-position: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, .27);
    transition: all .4s;
}

.img-list-container.train .business-list:nth-child(1) {
    background-image: url(/common/new/assets/image/sub/business/train-01.png);
}

.img-list-container.train .business-list:nth-child(2) {
    background-image: url(/common/new/assets/image/sub/business/train-02.png);
}

.img-list-container.train .business-list:nth-child(3) {
    background-image: url(/common/new/assets/image/sub/business/train-03.png);
}

.img-list-container.defense .business-list:nth-child(1) {
    background-image: url(/common/new/assets/image/sub/business/defense-01.png);
}

.img-list-container.defense .business-list:nth-child(2) {
    background-image: url(/common/new/assets/image/sub/business/defense-02.png);
}

.img-list-container.defense .business-list:nth-child(3) {
    background-image: url(/common/new/assets/image/sub/business/defense-03.png);
}

.img-list-container.construction .business-list:nth-child(1) {
    background-image: url(/common/new/assets/image/sub/business/construction-01.png);
}

.img-list-container.construction .business-list:nth-child(2) {
    background-image: url(/common/new/assets/image/sub/business/construction-02.png);
}

.img-list-container.construction .business-list:nth-child(3) {
    background-image: url(/common/new/assets/image/sub/business/construction-03.png);
}

.img-list-container.vehicle .business-list:nth-child(1) {
    background-image: url(/common/new/assets/image/sub/business/vehicle-01.png);
}

.img-list-container.vehicle .business-list:nth-child(2) {
    background-image: url(/common/new/assets/image/sub/business/vehicle-02.png);
}

.img-list-container.vehicle .business-list:nth-child(3) {
    background-image: url(/common/new/assets/image/sub/business/vehicle-03.png);
}


.devide-detail {
    text-align: center;
    margin-bottom: 40px;
    line-height: 1.6;
    font-size: 18px;
    list-style: none;
}

.devide-detail li {
    margin-bottom: 14px;
}

.detail-report-container {
    margin-top: 60px;
    border: 1px solid #ccc;
    border-radius: 12px;
    overflow: hidden;
}

.report-header {
    background: #3055bd;
    color: #fff;
    padding: 12px 16px;
    font-size: 1.1rem;
    cursor: pointer;
    user-select: none;
    text-align: center;
}

.report-content {
    max-height: 0;
    overflow: hidden;
    background: #f9fafb;
    padding: 0 16px;
    line-height: 1.6;
    transition: max-height 0.6s ease, padding 0.6s ease;
}

/* 열렸을 때 */
.detail-report-container.active .report-content {
    max-height: 3000px;
    padding: 16px;
}

.devide-subs {
    text-align: center;
    margin-top: 20px;
    margin-bottom: 40px;
}

.devide-subs h3 {
    font-size: 28px;
}

.devide-subs h4 {
    font-size: 16px;
    color: #8b8b8b;
}

.devide-subs p {
    margin-top: 30px;
    line-height: 1.6;
    font-size: 18px;
    color: #777;
}

.ethic-contents-container {
    width: 100%;
}

.ethic-contents-wrap {
    display: flex;
    flex-direction: row;
    justify-content: space-around;
    align-items: center;
    flex-wrap: wrap;
    width: 100%;
    max-width: 1200px;
    margin: auto;
}

.ethic-contents {
    position: relative;
    margin: 0 10px 30px;
    width: max(30%, 310px);
    max-width: 90vw;
    height: 480px;
    border-radius: 8px;
    background-size: cover;
    padding: 20px;
    color: #fff;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, .67);
    box-shadow: 0 4px 8px rgba(0, 0, 0, .27);
    transition: all .4s;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.ethic-contents img {
    position: relative;
    width: 130px;
    margin-top: 40px;
    margin-bottom: 80px;
}

.ethic-contents:hover {
    filter: brightness(1.15)
}

.ethic-contents::before {
    position: absolute;
    content: "";
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background-color: rgba(0, 0, 0, .57);
    border-radius: 8px;
}

.ethic-contents-wrap .ethic-contents:nth-child(1) {
    background-image: url(/common/new/assets/image/sub/management/ethic-bck-01.png);
}

.ethic-contents-wrap .ethic-contents:nth-child(2) {
    background-image: url(/common/new/assets/image/sub/management/ethic-bck-02.png);
}

.ethic-contents-wrap .ethic-contents:nth-child(3) {
    background-image: url(/common/new/assets/image/sub/management/ethic-bck-03.png);
}

.ethic-contents {
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.ethic-contents.show {
    opacity: 1;
    transform: translateY(0);
}

.ethic-contents p {
    position: relative;
    text-align: center;
    font-size: 18px;
    color: #f1f1f1;
    line-height: 1.4;
}

.ethic-line {
    width: 100%;
    height: 240px;
    object-fit: cover;
    margin: 40px 0 120px 0;

    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.ethic-line.show {
    opacity: 1;
    transform: translateY(0);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.lab-overview__section {
    margin: auto;
    margin-bottom: 40px;
    width: min(1440px, 90vw);
    display: flex;
    justify-content: center;
}

.kv {
    display: grid;
    gap: 8px;
}

.kv__row {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 16px;
    padding: 10px 12px;
    align-items: center;
    text-align: left;
}

.kv__row dt {
    color: #6b7280;
    font-weight: 500;
}

.kv__row dd {
    margin: 0;
    font-weight: 600;
    color: #111827;
}

.info-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 12px;
    width: min(600px, 90vw);
}

.info-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 16px;
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
    transition: all 0.2s ease;
}

.info-list li.multiple {
    flex-direction: column;
    align-items: start;
}

.info-list li.multiple .info-label {
    margin-bottom: 10px;
}

.info-list li:hover {
    background: #f9fafb;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.06);
}

.info-label {
    font-weight: 600;
    color: #374151;
}

.info-value {
    color: #111827;
    font-size: 0.95rem;
    text-align: right;
    max-width: 65%;
}

.cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
    width: 100%;
}

.card {
    padding: 24px 16px;
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 14px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, .04);
}

.card h4 {
    margin: 0 0 6px;
    font-size: 16px;
}

.card p {
    margin: 0;
    color: #374151;
    font-size: 14px;
}

.devide-subs-title {
    text-align: center;
    margin-bottom: 30px;
    font-size: 22px;
    color: #353535;
    font-weight: 400;
    width: 100%;
    padding-bottom: 20px;
    border-bottom: 1px solid #a4a4a4;
}

.devide-line {
    width: 100%;
    border-bottom: 1px solid #a4a4a4;
    margin-bottom: 20px;
}

/* ===== 연구개발 이력 섹션 ===== */
.history-timeline-section {
    max-width: 1000px;
    margin: auto;
    padding: 0 1rem 3rem 1rem;
    font-family: 'Segoe UI', sans-serif;
}

.history-timeline-section h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2rem;
    font-weight: 600;
    color: #1E4E9E;
}

/* 타임라인 라인 */
.history-timeline-timeline {
    position: relative;
    width: 100%;
    margin: 0 auto;
    padding: 0 1rem;
}

.history-timeline-timeline::before {
    content: '';
    position: absolute;
    width: 10px;
    background: linear-gradient(#1E90FF, #1E4E9E);
    top: 0;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 12px;
}

/* 아이템 */
.history-timeline-item {
    position: relative;
    width: 380px;
    padding: 1rem 2rem;
    opacity: 0;
    /* 애니메이션 전 숨김 */
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.history-timeline-item.left {
    left: -50%;
}

.history-timeline-item.right {
    left: 50%;
}

/* 노드 */
.history-timeline-item::before {
    content: '';
    position: absolute;
    top: 30px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: white;
    border: 3px solid #1E90FF;
    z-index: 10;
}

.history-timeline-item.left::before {
    right: -11px;
}

.history-timeline-item.right::before {
    left: -11px;
}

/* 내용 박스 */
.history-timeline-content {
    background: white;
    padding: 1.2rem 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-left: 5px solid #1E90FF;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.history-timeline-content:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 18px rgba(0, 0, 0, 0.15);
}

.history-timeline-content h3 {
    margin: 0 0 0.5rem;
    font-size: 1.2rem;
    color: #1E4E9E;
}

.history-timeline-content small {
    color: #666;
    font-size: 0.85rem;
}

/* 애니메이션 효과 */
.history-timeline-visible {
    opacity: 1 !important;
    transform: translateY(0) !important;
}

.section-devider {
    width: 100%;
    display: flex;
    flex-direction: row;
    align-items: center;
    position: relative;
    border: 1px solid rgba(0, 0, 0, .27);
    margin-bottom: 40px;
}

.section-devider.first {
    margin-bottom: 0;
    border-bottom: none;
}

.tab-btn:first-child {
    border-right: 1px solid rgba(0, 0, 0, .27);
}

.section-devider div {
    width: 50%;
    text-align: center;
    font-size: 18px;
    padding: 24px 0;
}

.section-devider div.sel {
    background-color: #407bde;
    color: #fff;
}

.tab-btn:hover {
    cursor: pointer;
    transition: all .4s;
    background-color: rgb(236, 236, 236);
}

.tab-btn.sel:hover {
    background-color: #4168a9;
}

.photo-guider-container {
    width: 100%;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 20px;
}

.photo-guider {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    max-width: 1200px;
    position: relative;
    margin: auto;
}

.photo-guider.half {
    width: calc(50% - 20px);
}

.photo-guider-title {
    font-size: 20px;
    font-weight: 400;
    color: #4e4e4e;
    margin-bottom: 24px;
}

.tech-guide-images {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 60px;
}

.tech-guide-images.four {
    gap: 10px;
}

.tech-guide-images.one {
    flex-direction: row;
    justify-content: center;
}

.tech-guide-imgbox {
    width: calc(50% - 10px);
    text-align: center;
}

.tech-guide-imgbox.larger {
    min-width: 70%;
}

.tech-guide-images.four .tech-guide-imgbox {
    width: calc(25% - 9px);
}

.tech-guide-imgbox img {
    width: 100%;
    height: auto;
    object-fit: cover;
    border-radius: 16px;
    border: 1px solid #ccc;
    box-shadow: 0 2px 8px rgba(0, 0, 0, .27);
}

.tech-guide-caption {
    margin-top: 8px;
    font-size: 15px;
    color: #444;
    display: flex;
    flex-direction: row;
    align-items: center;
    width: 100%;
    justify-content: center;
}

.tech-guide-number {
    background-color: #3f7bb7;
    width: 24px;
    height: 24px;
    border-radius: 4px;
    color: #fff;
    font-weight: 800;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-right: 8px;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.additional-contents {
    width: min(600px, 90%);
    margin: auto;
    display: flex;
    flex-direction: column;
    align-items: start;
    padding: 20px 30px;
    border: 1px dashed rgb(140, 140, 140);
    line-height: 1.6;
    font-size: 14px;
    color: rgb(112, 112, 112);
    margin-bottom: 60px;
}

.photo-grid-container {
    background-color: #f9fafc;
    padding: 20px;
    margin: auto;
    margin-bottom: 40px;
    width: 100%;
    max-width: 1200px;
}

.photo-grid-container .photo-grid-title {
    text-align: center;
    margin-bottom: 30px;
    color: #0a4fa3;
    font-size: 1.8rem;
    font-weight: bold;
}

.photo-grid-container .photo-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.photo-grid-container .photo-card {
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    padding: 15px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    transition: transform 0.2s ease;
}

.photo-grid-container .photo-card:hover {
    transform: translateY(-4px);
}

.photo-grid-container .photo-card-title {
    font-size: 1.1rem;
    font-weight: bold;
    margin-bottom: 10px;
    color: #0a4fa3;
}

.photo-grid-container .photo-card-image {
    width: 100%;
    object-fit: contain;
    border-radius: 8px;
    background: #eef3f9;
}

.photo-grid-container .photo-card-frequency {
    margin-top: 12px;
    font-size: 1rem;
    font-weight: bold;
    color: #333;
    background: #e6f0ff;
    padding: 6px 14px;
    border-radius: 8px;
}

.photo-table {
    width: 100%;
    max-width: 1200px;
    border-collapse: collapse;
    margin: 20px auto;
    background: #ffffff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.08);
}

.photo-table th,
.photo-table td {
    border: 1px solid #e0e6ed;
    padding: 15px;
    text-align: center;
    vertical-align: middle;
}

.photo-table th {
    background: #f3f6fa;
    font-size: 1rem;
    font-weight: bold;
    color: #0a4fa3;
}

.photo-table .row-title {
    background: #f9fafc;
    font-weight: bold;
    color: #333;
    width: 120px;
}

.photo-table img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

/* 반응형 */
@media (max-width: 768px) {

    .photo-table,
    .photo-table thead,
    .photo-table tbody,
    .photo-table th,
    .photo-table td,
    .photo-table tr {
        display: block;
        width: 100%;
    }

    .photo-table thead {
        display: none;
    }

    .photo-table tr {
        margin-bottom: 15px;
        border-bottom: 2px solid #e0e6ed;
    }

    .photo-table td {
        text-align: center;
        padding: 10px;
        position: relative;
    }

    .photo-table td::before {
        content: attr(data-label);
        font-weight: bold;
        color: #0a4fa3;
        display: block;
        margin-bottom: 5px;
    }

    .photo-table .row-title {
        background: none;
        font-size: 1.1rem;
        width: 100%;
        text-align: center;
    }
}

/* 반응형 */
@media (max-width: 900px) {
    .photo-grid-container .photo-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .photo-grid-container .photo-grid {
        grid-template-columns: 1fr;
    }
}

/* 반응형 레이아웃 */
@media (max-width: 1439px) {

    .sub-content-container,
    .sub-content-title,
    .sub-content-detail,
    .nav-list {
        width: 100%;
        margin-top: 10px;
    }

    .sub-content-header {
        padding: 0 20px;
    }

    .ideal-img {
        width: 70%;
    }

}

/* 태블릿 대응 (768 ~ 1023px) */
@media (max-width: 1023px) {
    .photo-guider.half {
        width: 100%;
    }

    .tech-guide-imgbox {
        width: calc(50% - 10px);
        text-align: center;
    }

    .tech-guide-images.four .tech-guide-imgbox {
        width: calc(50% - 9px);
    }

    .cards {
        grid-template-columns: repeat(2, 1fr);
    }

    .kv__row {
        grid-template-columns: 180px 1fr;
        font-size: 15px;
    }

    .business-list {
        width: calc(50% - 20px);
    }

    .sub-content-container,
    .sub-content-title,
    .sub-content-detail,
    .nav-list {
        width: 100%;
    }

    .sub-content-header {
        padding: 0 20px;
    }

    .sub-content-side-nav {
        display: none;
    }

    .ideal-img {
        width: 80%;
    }

    .service-notice-search {
        flex-direction: column;
        align-items: start;
    }

    .service-notice-desc {
        margin-bottom: 10px;
    }

    .service-notice-search-filter {
        width: 80px;
        padding: 6px;
    }

    .service-notice-search-input {
        width: 150px;
    }
}

/* 모바일 대응 (<= 767px) */
@media (max-width: 767px) {
    .vision-content-wrapper img {
        display: none;
    }

    .vision-content-wrapper.mission img {
        display: block;
        width: 90%;
    }

    .vision-content-wrapper img.mobile {
        display: block;
        opacity: 1;
    }

    .vision-mission-wrapper {
        flex-direction: column;
        margin-bottom: 10px;
    }

    .vision-content-wrapper.mission .vision-mission-wrapper img {
        display: block;
        width: 80%;
        max-width: 450px;
        margin-bottom: 30px;
    }

    .section-devider {
        flex-direction: column;
    }

    .section-devider .tab-btn {
        width: 100%;
    }

    .tab-btn:first-child {
        border-right: none;
        border-bottom: 1px solid rgba(0, 0, 0, .27);
    }

    .history-timeline-timeline::after {
        left: 25px;
    }

    .history-timeline-item.left,
    .history-timeline-item.right {
        width: 280px;
        left: 0;
    }

    .history-timeline-item::before {
        display: none;
    }

    .cards {
        grid-template-columns: repeat(1, 1fr);
    }

    .info-list li {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }

    .info-value {
        text-align: left;
        max-width: 100%;
    }

    .kv__row {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .kv__row dt {
        margin-bottom: 4px;
    }

    .business-list {
        width: calc(100% - 20px);
    }

    .sub-content-header {
        margin: 0;
        padding: 0 20px;
    }

    .sub-content-container,
    .sub-content-title,
    .sub-content-detail,
    .nav-list {
        width: 100%;
    }

    .sub-content-title,
    .sub-content-detail {
        text-align: center;
    }

    .sub-content-title::after {
        background-color: rgba(255, 255, 255, 0.8);
    }

    .sub-content-side-nav {
        display: none;
    }

    .vision-container img {
        width: 100%;
    }

    .vision-content-wrapper img {
        width: 100%;
    }

    .ideal-img {
        width: 100%;
    }

    .contact-wrapper {
        width: 100%;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
    }

    .history-years {
        display: none;
    }

    .history-details {
        padding: 0;
    }

    .event {
        margin: 24px 0;
    }

    .year-content {
        display: block;
        position: relative;
    }

    .event-year {
        margin: 30px auto;
        text-align: center;
    }

    .event-year:not(:first-child) {
        margin-top: 40px;
    }

    .organization-container img {
        display: none;
    }

    .organization-container img.mobile {
        display: block;
    }

    .detail-title {
        text-align: center;
    }

    .detail-content {
        flex-direction: column;
        align-items: center;
    }

    .detail-text-box {
        margin-top: 40px;
    }

    .devide-title {
        padding-bottom: 20px;
        margin-bottom: 20px;
        font-size: 24px;
    }

    .devide-title::after {
        background: rgb(92, 92, 92);
    }


    .management-main-img {
        width: 100%;
    }

    .sub-inquiry-flex .sub-inquiry-half {
        flex: 1 1 100%;
    }
}

@media (max-width: 600px) {
    .tech-guide-imgbox {
        width: 100%;
        text-align: center;
    }

    .tech-guide-images.four .tech-guide-imgbox {
        width: 100%;
    }
}

.sitemap {
    max-width: 1200px;
    width: 90%;
    margin: 0 auto;
    padding: 0px 20px 60px;
}

.sitemap h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 40px;
    font-weight: 700;
}

.sitemap-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
}

.sitemap-section {
    background: #fff;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
    transition: transform 0.2s ease;
}

.sitemap-section:hover {
    transform: translateY(-5px);
}

.sitemap-section h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: #658ce3;
}

.sitemap-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sitemap-section li {
    margin-bottom: 10px;
}

.sitemap-section a {
    text-decoration: none;
    color: #374151;
    transition: color 0.2s;
}

.sitemap-section a:hover {
    color: #2563eb;
}

/* 모바일 대응 (아코디언) */
@media (max-width: 768px) {
    .sitemap-grid {
        display: block;
    }

    .sitemap-section {
        margin-bottom: 20px;
    }

    .sitemap-section h3 {
        cursor: pointer;
        position: relative;
    }

    .sitemap-section h3::after {
        content: "▾";
        position: absolute;
        right: 0;
        font-size: 0.9rem;
    }

    .sitemap-section ul {
        display: none;
    }

    .sitemap-section.active ul {
        display: block;
        margin-top: 10px;
    }
}

.policy-container {
    max-width: 1200px;
    width: 90%;
    margin: 0 auto;
    padding: 40px 20px;
}

.policy-container h1 {
    font-size: 2rem;
    margin-bottom: 20px;
    text-align: center;
    font-weight: 600;
}

.policy-container .policy-intro {
    font-size: 1rem;
    margin-bottom: 30px;
    text-align: center;
    color: #555;
}

.policy-container section {
    margin-bottom: 40px;
}

.policy-container section h2 {
    font-size: 1.25rem;
    margin-bottom: 10px;
    border-left: 4px solid #005bac;
    padding-left: 10px;
    font-weight: 600;
}

.policy-container section h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    font-weight: 600;
}


.policy-container section p {
    margin: 0 0 15px;
    font-size: 0.95rem;
}

.policy-container ul {
    margin: 0 0 15px 20px;
    padding: 0;
}

.policy-container ul li {
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.management-logo-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 80px;
    margin-top: 40px;
    position: relative;
    margin-bottom: 40px;
}

/* 원 공통 스타일 */
.katem-circle {
    width: 260px;
    height: 260px;
    border: 1px dashed #0073cf;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transform: translateY(50px);
    transition: all 1s ease;
    position: relative;
}

.katem-circle.show {
    opacity: 1;
    transform: translateY(0);
}

.katem-circle span {
    text-align: center;
    color: #0073cf;
    font-weight: bold;
    z-index: 2;
    position: relative;
    font-size: 20px;
}

.katem-dot {
    width: 12px;
    height: 12px;
    background: #0073cf;
    border-radius: 50%;
    position: absolute;
    top: 50%;
    opacity: 0;
}

.left .katem-dot {
    left: -6px;
    transform-origin: 135px center;
}

.left .katem-dot.animate {
    opacity: 1;
    animation: left-katem-dot-rotate 1.5s ease forwards;
}

.right .katem-dot {
    left: calc(100% - 6px);
    transform-origin: -123px center;
}

.right .katem-dot.animate {
    opacity: 1;
    animation: right-katem-dot-rotate 1.5s ease forwards;
}

@keyframes left-katem-dot-rotate {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(180deg);
    }
}

@keyframes right-katem-dot-rotate {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(-180deg);
    }
}

.katem-logo {
    width: 150px;
    opacity: 0;
    transform: scale(0.8);
    transition: all 1s ease;
}

.katem-logo.show {
    opacity: 1;
    transform: scale(1);
}


.photo-content-section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 80px 20px;
}

.content-box {
    display: flex;
    align-items: center;
    margin-bottom: 100px;
    opacity: 0;
    transform: translateY(50px);
    transition: all 1s ease;
}

.content-box:nth-child(even) {
    flex-direction: row-reverse;
    text-align: right;
}

.content-box img {
    width: 50%;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.content-text {
    width: 50%;
    padding: 0 40px;
}

.content-text h3 {
    font-size: 26px;
    margin-bottom: 10px;
}

.content-text p {
    font-size: 18px;
    line-height: 1.5;
    color: rgb(101, 101, 101);
}

.content-box.show {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 1023px) {
    .management-logo-container {
        transform: scale(80%);
    }
}

@media (max-width: 1023px) {
    .management-logo-container {
        transform: none;
        flex-wrap: wrap;
    }

    .katem-logo {
        display: none;
    }

    .katem-circle {
        width: 80vw;
        height: 80vw;
    }

    .katem-dot {
        display: none;
    }

    .content-box {
        flex-direction: column;
        align-items: start;
    }

    .content-box img {
        width: 100%;
        margin-bottom: 20px;
    }

    .content-text {
        padding: 0;
        width: 100%;
        text-align: center;
    }

    .content-box:nth-child(even) {
        flex-direction: column;
        text-align: center;
    }
}

.loading-message {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0,0,0,0.6);
    color: #fff;
    padding: 10px 20px;
    border-radius: 8px;
    text-align: center;
}