.container,
.header-container,
.main-container,
.simulator-container,
.news-container,
.client-container,
.researchanddevelopment-container,
.contact-container,
.footer-container,
.menu-container,
.about-us-container,
.milestones-container,
.latest-news-container,
.award-certificate-container,
.our-clients-container,
.business-container,
.product-container,
.top-bar-container,
.menu-tag,
.contact-menu-container,
.researchanddevelopment-container,
.researchanddevelopment-page-container,
.researchanddevelopment-products-container,
.product-info-container,
.product-reference-container,
.latest-news-detail-container {
    margin: 0 auto;
    padding: 0 10%;
    overflow: hidden;
    position: relative;
}

.menu-tag {
    position: absolute;
    top: 150px;
    z-index: 100;
}

.menu-tag a:hover {
    text-decoration: none;
    color: var(--gray700);
}

.side-nav-menu {
    display: none;
}

.menu-toggle {
    display: none;
}

#check-button{
    width: 320px;
    height: 60px;
    background: linear-gradient(to right, #25AAE2, #2D5FAB);
    border: 0px;
    border-radius: none;
}

#phone-number{
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

.phone-number{
    margin-right: 10px;
}

/* 일반 데스크탑 및 태블릿 가로 (1024px 이상, 1200px 미만) */
@media screen and (min-width: 1024px) and (max-width: 1130px) {
    .container,
    .header-container,
    .main-container,
    .simulator-container,
    .researchanddevelopment-container,
    .news-container,
    .contact-container,
    .footer-container,
    .menu-container,
    .about-us-container,
    .milestones-container,
    .latest-news-container,
    .award-certificate-container,
    .our-clients-container,
    .business-container,
    .product-container,
    .top-bar-container,
    .menu-tag,
    .contact-menu-container,
    .researchanddevelopment-container,
    .researchanddevelopment-page-container,
    .researchanddevelopment-products-container,
    .product-info-container,
    .product-reference-container,
    .latest-news-detail-container {
        margin: 0 0;
        padding: 0 5%;
        position: relative;
    }

    .row {
        flex-direction: column !important;
    }

    .col iframe {
        height: 400px;
        padding-bottom: 60px;
    }

    .menu-tag {
        top: 40px !important;
    }

    .nav-menu, .nav-business-area  {
        display: none !important;
    }

    .menu-toggle {
        background: none;
        border: none;
        cursor: pointer;
        position: absolute;
        right: 40px;
        display: block !important;
    }

    .side-nav-menu {
        flex-direction: column;
        position: fixed;
        top: 0;
        right: 0;
        width: 400px;
        height: 100%;
        box-shadow: -10px 0 30px rgba(0,0,0,0.1);
        z-index: 1000;
        box-sizing: border-box;
        display: none !important;
    }

    .side-nav-menu.active {
        display: flex !important;
        z-index: 1100;
    }

    .close-menu {
        top: 45px;
        right: 45px;
        display: block;
        position: absolute;
        background: none;
        border: none;
        cursor: pointer;
        margin-bottom: 20px;
    }

    .product-list-menu,
    .heavy-equipment-menu,
    .safety-training-accident-experience-menu,
    .manufacturing-menu,
    .shipbuilding-industry-menu,
    .culture-tourism-menu {
        position: absolute;
        top: 0;
        right: 0;
        left:0;
        width: 400px;
        height: 100%;
        box-shadow: none;
        flex-direction: column;
        display: none;
        z-index: 1200;
    }

    .product-list-menu.active,
    .heavy-equipment-menu.active,
    .safety-training-accident-experience-menu.active,
    .manufacturing-menu.active,
    .shipbuilding-industry-menu.active,
    .culture-tourism-menu.active {
        display: flex !important;
    }

    .product-button {
        background: none;
        border-style: none;
        padding: 0 0;
        width: 100%;
        text-align: left;
    }

    .side-nav-menu ul {
        padding-top: 80px !important;
        flex-direction: column;
        width: 100%;
    }
    
    .side-nav-menu ul li {
        width: 100%;
        text-align: left;
    }
    
    .side-nav-menu ul li a {
        padding: 15px 40px;
        display: block;
        text-decoration: none;
        color:var(--black);
    }
    
    .side-nav-menu ul li a:hover {
        background-color: var(--gray100);
    }

    .side-nav-menu .business-button {
        margin: 15px 40px;
        background-color: var(--simgBlue);
        color: var(--white);
    }

    .side-nav-menu .business-button:hover {
        background-color: var(--simgIndigo);
    }

    .product-back-button {
        top: 45px;
        left: 35px;
        display: block;
        position: absolute;
        background: none;
        border: none;
        cursor: pointer;
        margin-bottom: 20px;
    }

    .simulator-container {
        flex-direction: column;
        justify-content: center;
        align-items: center;
        margin: 60px 0 20px 0 !important;
    }

    .simulator {
        margin-right: 0 !important;
        margin-bottom: 40px ;
    }

    .news-wrapper,
    .client-wrapper {
        width: 100% !important;
    }
    .news-item {
        width: 100%;
        padding: 10px !important;
        margin: 0px !important;
        flex: 0 0 calc(50%) !important;
    }

    .client-logo {
        flex: 0 0 calc(33% - 10px) !important;
    }

    #news-prev-button,
    #client-prev-button {
        left: 2% !important;
    }

    #news-next-button,
    #client-next-button {
        right: 2% !important;
    }

    .contact-container {
        display: block !important;
    }

    .contact-info {
        width: 100% !important;
        flex-direction: row;
        display: flex;
        justify-content: space-between;
        align-items: flex-start;
        position: relative;
    }

    .contact-subtitle {
        position: absolute;
        top: 60px;
        width: 40%;
    }

    .contact-map {
        width: calc(50% - 20px);
        margin-top: 0 !important;
        margin-bottom: 0;
        max-width: 50% !important;
    }

    .contact-form {
        max-width: none !important;
        margin: auto;
    }

    .contact-button {
        width: calc(50% - 80px);
        max-width: 600px;
        left: 50%;
        transform: translateX(-30%);
    }

    .footer-sections {
        justify-content: flex-start !important;
    }
    
    .footer-info-detail-section {
        width: 70% !important;
    }

    .footer-container {
        height: 452px !important;
    }

    .footer-info-detail-section1,
    .footer-info-detail-section2 {
        width: 100% !important;
    }

    .footer-info-detail-section2 {
        padding-top: 40px !important;
    }

    .footer-info-detail-section {
        justify-content: space-around;
        flex-direction: column;
    }

    .footer-bottom-list {
        padding: 0 5% !important;
    }

    #paging li {
        display: none !important;
    }

    #paging li:first-child,
    #paging li:nth-child(2),
    #paging li:last-child,
    #paging li:nth-last-child(2) {
        display: inline-block !important;
    }

    #paging li:nth-child(-n+7) {
        display: inline-block !important;
    }

    /* About Us */

    .milestones-list {
        justify-content: center;
        flex-direction: column;
    }

    .milestones-item {
        width: auto !important;
        margin: 20px 0 !important;
    }

    /* Our Clients */

    .our-clients-list {
        grid-template-columns: repeat(3, 1fr) !important;
    }

    /* Award Certificate */

    .award-certificate-list {
        grid-template-columns: repeat(3, 1fr) !important;
    }

    /* Business */

    .contact-partner-item,
    .contact-product-item {
        width: auto !important;
        margin: 20px 0 !important;
    }

    /* researchanddevelopment */

    .researchanddevelopment-page-container {
        align-items: flex-start !important;
        flex-direction: column !important;
    }

    .researchanddevelopment-page-message {
        padding-right: 0 !important;
    }

    .researchanddevelopment-page-image {
        margin-bottom: 40px;
    }

    .researchanddevelopment-products-list {
        grid-template-columns: repeat(2, 1fr) !important;
    }

    .researchanddevelopment-products-item {
        width: 100% !important;
    }

    .researchanddevelopment-products-item img {
        width: 100% !important;
    }

    /* Product */

    
    .product-list {
        grid-template-columns: repeat(2, 1fr) !important;
    }

    .product-page {
        flex-direction: column !important;
    }

    .product-image-area {
        text-align: center;
    }

    .product-image-area img {
        width: 80%;
        padding-bottom: 60px;
    }

    .popup-container {
        max-width: 800px !important;
        height: 60%;
    }

    .popup-content {
        height: 100%;
    }

    .popup-image {
        width: 100%;
        height: 100% !important;
        object-fit: cover;
    }

    .popup-video-container {
        max-width: 800px !important;
    }
}

/* 태블릿 및 작은 데스크탑 (768px 이상, 1024px 미만) */
@media screen and (min-width: 768px) and (max-width: 1023px) {
    .container,
    .header-container,
    .main-container,
    .simulator-container,
    .researchanddevelopment-container,
    .news-container,
    .contact-container,
    .footer-container,
    .menu-container,
    .about-us-container,
    .milestones-container,
    .latest-news-container,
    .award-certificate-container,
    .our-clients-container,
    .business-container,
    .product-container,
    .top-bar-container,
    .menu-tag,
    .contact-menu-container,
    .researchanddevelopment-container,
    .researchanddevelopment-page-container,
    .researchanddevelopment-products-container,
    .product-info-container,
    .product-reference-container,
    .latest-news-detail-container {
        margin: 0 0;
        padding: 0 5%;
        position: relative;
    }

    .row {
        flex-direction: column !important;
    }

    .col iframe {
        height: 400px;
        padding-bottom: 60px;
    }

    .menu-tag {
        top: 40px !important;
    }

    .nav-menu, .nav-business-area {
        display: none !important;
    }
    
    .menu-toggle {
        background: none;
        border: none;
        cursor: pointer;
        position: absolute;
        right: 40px;
        display: block !important;
    }

    .side-nav-menu {
        flex-direction: column;
        position: fixed;
        top: 0;
        right: 0;
        width: 400px;
        height: 100%;
        box-shadow: -10px 0 30px rgba(0,0,0,0.1);
        z-index: 1000;
        box-sizing: border-box;
        display: none !important;
    }

    .side-nav-menu.active {
        display: flex !important;
        z-index: 1100;
    }

    .close-menu {
        top: 45px;
        right: 45px;
        display: block;
        position: absolute;
        background: none;
        border: none;
        cursor: pointer;
        margin-bottom: 20px;
    }

    .product-list-menu,
    .heavy-equipment-menu,
    .safety-training-accident-experience-menu,
    .manufacturing-menu,
    .shipbuilding-industry-menu,
    .culture-tourism-menu {
        position: absolute;
        top: 0;
        right: 0;
        left:0;
        width: 400px;
        height: 100%;
        box-shadow: none;
        flex-direction: column;
        display: none;
        z-index: 1200;
    }

    .product-list-menu.active,
    .heavy-equipment-menu.active,
    .safety-training-accident-experience-menu.active,
    .manufacturing-menu.active,
    .shipbuilding-industry-menu.active,
    .culture-tourism-menu.active {
        display: flex !important;
    }

    .product-button {
        background: none;
        border-style: none;
        padding: 0 0;
        width: 100%;
        text-align: left;
    }

    .side-nav-menu ul {
        padding-top: 80px !important;
        flex-direction: column;
        width: 100%;
    }
    
    .side-nav-menu ul li {
        width: 100%;
        text-align: left;
    }
    
    .side-nav-menu ul li a {
        padding: 15px 40px;
        display: block;
        text-decoration: none;
        color:var(--black);
    }
    
    .side-nav-menu ul li a:hover {
        background-color: var(--gray100);
    }

    .side-nav-menu .business-button {
        margin: 15px 40px;
        background-color: var(--simgBlue);
        color: var(--white);
    }

    .side-nav-menu .business-button:hover {
        background-color: var(--simgIndigo);
    }

    .product-back-button {
        top: 45px;
        left: 35px;
        display: block;
        position: absolute;
        background: none;
        border: none;
        cursor: pointer;
        margin-bottom: 20px;
    }

    .simulator-container {
        flex-direction: column;
        justify-content: center;
        align-items: center;
        margin: 60px 0 20px 0 !important;
    }

    .simulator {
        margin-right: 0 !important;
        margin-bottom: 40px ;
    }

    .news-wrapper {
        width: 60% !important;
    }

    .news-item {
        width: 100%;
        padding: 10px !important;
        margin: 0px !important;
        flex: 0 0 calc(100%) !important;
    }

    .client-wrapper {
        width: 80% !important;
    }

    .client-logo {
        flex: 0 0 calc(50% - 0px) !important;
    }

    #news-next-button {
        right: 15% !important;
    }

    #news-prev-button {
        left: 15% !important;
    }

    #client-next-button {
        right: 10% !important;
    }

    #client-prev-button {
        left: 10% !important;
    }

    html[lang="en"] .footer-container,
    html[lang="vi"] .footer-container {
        min-height: 500px;   
    }

    .footer-info-detail-section {
        width: 60% !important;
        display: flex !important;
        justify-content: space-around !important;
        flex-direction: column !important;
    }

    .footer-info-detail-section1,
    .footer-info-detail-section2 {
        width: 100% !important;
    }

    .footer-info-detail-section2 {
        padding-top: 30px !important;
    }
    .footer-container {
        min-height: 452px !important;
    }

    .footer-bottom-list {
        padding: 0 5% !important;
    }

    #paging li {
        display: none !important;
    }

    #paging li:first-child,
    #paging li:nth-child(2),
    #paging li:last-child,
    #paging li:nth-last-child(2) {
        display: inline-block !important;
    }

    #paging li:nth-child(-n+7) {
        display: inline-block !important;
    }

    /* About Us */

    .milestones-list {
        justify-content: center;
        flex-direction: column;
    }

    .milestones-item {
        width: auto !important;
        margin: 20px 0 !important;
    }

    /* Our Clients */

    .our-clients-list {
        grid-template-columns: repeat(3, 1fr) !important;
    }

    /* Award Certificate */

    .award-certificate-list {
        grid-template-columns: repeat(3, 1fr) !important;
    }

    /* Business */

    .contact-partner-item,
    .contact-product-item {
        width: auto !important;
        margin: 20px 0 !important;
    }

    /* researchanddevelopment */

    .researchanddevelopment-page-container {
        align-items: flex-start !important;
        flex-direction: column !important;
    }

    .researchanddevelopment-page-message {
        padding-right: 0 !important;
    }

    .researchanddevelopment-page-image {
        margin-bottom: 40px;
    }

    .researchanddevelopment-products-list {
        grid-template-columns: repeat(2, 1fr) !important;
    }

    .researchanddevelopment-products-item {
        width: 100% !important;
    }

    .researchanddevelopment-products-item img {
        width: 100% !important;
    }

    /* Product */

    .product-list {
        grid-template-columns: repeat(2, 1fr) !important;
    }

    .product-page {
        flex-direction: column !important;
    }

    .product-image-area {
        text-align: center;
    }

    .product-image-area img {
        width: 80%;
        padding-bottom: 60px;
    }

    .popup-container {
        max-width: 800px !important;
        height: 60%;
    }

    .popup-content {
        height: 100%;
    }

    .popup-image {
        width: 100%;
        height: 100% !important;
        object-fit: cover;
    }

    .popup-video-container {
        max-width: 800px !important;
    }
}

/* 모바일 (480px 이상, 768px 미만) */
@media screen and (min-width: 480px) and (max-width: 767px) {
    .top-bar-container {
        margin: 0px !important;
        padding: 0px !important;
        display: flex;
        flex-wrap: wrap;
        justify-content: center !important;
    }

    .swiper-slide img {
        width: 80% !important; 
    }

    .simulator-title,
    .simulator-description {
        padding: 0px 10px 0px 0px;
    }

    .award-certificate-item img{
        max-width: 100% !important;
    }

    .about-us-message {
        min-height: 100px !important;
        padding-bottom: 0px !important;
    }

    .container,
    .header-container,
    .main-container,
    .simulator-container,
    .news-container,
    .client-container,
    .contact-container,
    .footer-container,
    .menu-container,
    .about-us-container,
    .milestones-container,
    .latest-news-container,
    .award-certificate-container,
    .our-clients-container,
    .business-container,
    .product-container,
    .menu-tag,
    .contact-menu-container,
    .researchanddevelopment-container,
    .researchanddevelopment-page-container,
    .researchanddevelopment-products-container,
    .product-info-container,
    .product-reference-container,
    .latest-news-detail-container {
        margin: 0 0;
        padding: 0 5%;
        position: relative;
    }

    .menu-tag {
        top: 40px !important;
    }

    .row {
        flex-direction: column !important;
    }

    .col iframe {
        height: 400px;
        padding-bottom: 60px;
    }

    .nav-menu, .nav-business-area {
        display: none !important;
    }

    .menu-toggle {
        background: none;
        border: none;
        cursor: pointer;
        position: absolute;
        right: 40px;
        display: block !important;
    }
    .side-nav-menu {
        flex-direction: column;
        position: fixed;
        top: 0;
        right: 0;
        width: 320px;
        height: 100%;
        box-shadow: -10px 0 30px rgba(0,0,0,0.1);
        z-index: 1000;
        box-sizing: border-box;
        display: none !important;
    }

    .side-nav-menu.active {
        display: flex !important;
        z-index: 1100;
    }

    .close-menu {
        top: 70px;
        right: 45px;
        display: block;
        position: absolute;
        background: none;
        border: none;
        cursor: pointer;
        margin-bottom: 20px;
    }

    .product-list-menu,
    .heavy-equipment-menu,
    .safety-training-accident-experience-menu,
    .manufacturing-menu,
    .shipbuilding-industry-menu,
    .culture-tourism-menu {
        position: absolute;
        top: 0;
        right: 0;
        left:0;
        width: 400px;
        height: 100%;
        box-shadow: none;
        flex-direction: column;
        display: none;
        z-index: 1200;
    }

    .product-list-menu.active,
    .heavy-equipment-menu.active,
    .safety-training-accident-experience-menu.active,
    .manufacturing-menu.active,
    .shipbuilding-industry-menu.active,
    .culture-tourism-menu.active {
        padding-top: 30px;
        display: flex !important;
    }

    .product-button {
        background: none;
        border-style: none;
        padding: 0 0;
        width: 100%;
        text-align: left;
    }

    .side-nav-menu ul {
        padding-top: 110px !important;
        flex-direction: column;
        width: 100%;
    }
    
    .side-nav-menu ul li {
        width: 100%;
        text-align: left;
    }
    
    .side-nav-menu ul li a {
        padding: 15px 40px;
        display: block;
        text-decoration: none;
    }
    
    .side-nav-menu ul li a:hover {
        background-color: var(--gray100);
    }

    .side-nav-menu .business-button {
        margin: 15px 40px;
        background-color: var(--simgBlue);
        color: var(--white);
    }

    .side-nav-menu .business-button:hover {
        background-color: var(--simgIndigo);
    }

    .product-back-button {
        top: 70px;
        left: 35px;
        display: block;
        position: absolute;
        background: none;
        border: none;
        cursor: pointer;
        margin-bottom: 20px;
    }

    .main-title,
    .main-container .main-background h1 {
        font-size: 26px !important;
    }

    .main-background p {
        top: 50px !important;
        font-size: 18px !important;
    }

    .cta-button {
        font-size: 16px !important;
    }

    .menu-detail-button {
        margin-top: 0;
        top: auto !important;
        bottom: 0 !important;
        left: 0 !important;
        right: 0 !important;
    }

    .simulator-container {
        display: block !important;
        padding: 0 10% !important;
    }

    .simulator {
        width: 100% !important;
        height: 500px !important;
        margin-bottom: 40px;
        position: relative;
        clear: both;
    }

    .simulator:last-child {
        margin-bottom: 0 !important;
    }

    .simulator-info {
        position: static !important;
    }

    .simulator iframe {
        height:290px !important;
    }

    .simulator-type {
        font-size: 18px !important;
    }

    .simulator-title {
        font-size: 26px !important;
    }

    .section-title,
    .client-title,
    .ontact-title {
        font-size: 36px !important;
        text-align: center;
    }

    .section-subtitle,
    .client-subtitle,
    .contact-subtitle {
        font-size: 18px !important;
    }

    .news-wrapper,
    .client-wrapper {
        width: 60% !important;
    }

    .news-item {
        width: 100%;
        flex: 0 0 calc(100%) !important;
    }

    #news-prev-button {
        left: 14% !important;
    }

    #news-next-button {
        right: 14% !important;
    }

    .swiper-slide {
        width: 100%;
        flex: 0 0 calc(100%) !important;
    }

    #client-prev-button {
        left: 14% !important;
    }

    #client-next-button {
        right: 14% !important;
    }

    .contact-container {
        display: block;
    }
    .contact-product-item,
    .contact-partner-item {
        margin: 10px 0 !important;
    }

    .contact-info {
        display: block;
        width: 100% !important;
    }

    .contact-subtitle {
        width: 60% !important;
    }

    .contact-map {
        max-width: 100% !important;
        margin-bottom: 0 !important;
    }

    .contact-form {
       margin-top: 70px;
        width: 100% !important;
        min-height:780px !important;
    }

    html[lang="en"] .footer-container,
    html[lang="vi"] .footer-container  {
        min-height: 740px !important;   
    }

    .footer-container {
        height: 700px !important;
        padding: 0 !important;
    }

    .footer-sections {
        display: block !important;
    }

    .footer-info-section {
        width: 100% !important;
        text-align: center;
        padding-bottom: 30px !important;
    }

    .footer-subtitle {
        width: 100% !important;
        padding: 0 20%;
        text-align: center ;
    }

    .footer-info-detail-section {
        width: 100% !important;
        justify-content: space-around;
        flex-direction: column;

    }

    .footer-info-detail-section1,
    .footer-info-detail-section2 {
        width: 100% !important;
        position: none !important;
        margin-left: 0 !important;
    }

    .footer-info-detail-section1 {
        background-color: var(--gray900);
        padding: 30px 0 !important;
    }

    .footer-info-text1, 
    .footer-info-text2,
    .footer-info-title {
        padding-left: 20% !important;
    }

    .footer-info-detail-section2 {
        padding: 30px 0 !important;
    }

    .footer-bottom {
        height: auto !important;
        min-height: 100px;
        flex-direction: column;
        padding-top: 15px;
        background-color: var(--gray900) !important;
    }

    .footer-bottom-list {
        flex-wrap: wrap;
        flex-direction: row !important;
        justify-content: center !important;
        padding: 0 !important;
        gap: 10px;
    }

    .copyright {
        margin-top: 10px;
        color: var(--gray500);
        white-space: nowrap;
        text-align: center !important;
    }

    .privacy {
        display: flex;
        flex-direction: row;
        gap: 20px;
        padding: 0 10px;
    }

    .privacy a {
        white-space: nowrap;
        color: var(--gray500);
        text-decoration: none;
    }

    .privacy a:hover {
        color: var(--gray600);
    }

    .copyright {
        bottom: 20px !important;
    }

    /* About Us */

    .milestones-list {
        justify-content: center;
        flex-direction: column;
    }

    .milestones-item {
        width: auto !important;
        margin: 20px 0 !important;
    }

    /* News */
    
    .latest-news-item {
        flex-direction: column;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        margin-bottom: 40px !important;
    }

    .latest-news-item img {
        width: 100% !important;
    }

    .latest-news-info {
        padding: 20px;
    }
    
    /* Our Clients */

    .our-clients-list {
        grid-template-columns: repeat(2, 1fr) !important;
    }

    /* Award Certificate */

    .award-certificate-list {
        grid-template-columns: repeat(1, 1fr) !important;
    }

    /* Business */

    .col {
        width: auto !important;
    }

    /* Business */
    
    .contact-partner-item,
    .contact-product-item {
        width: auto !important;
       
        margin: 20px 0 !important;
    }

    /* researchanddevelopment */

    .researchanddevelopment-page-container {
        align-items: flex-start !important;
        flex-direction: column !important;
    }

    .researchanddevelopment-page-message {
        padding-right: 0 !important;
    }

    .researchanddevelopment-page-image {
        margin-bottom: 40px;
    }
    
    .researchanddevelopment-products-list {
        grid-template-columns: repeat(1, 1fr) !important;
    }

    .researchanddevelopment-products-item {
        width: 100% !important;
    }

    .researchanddevelopment-products-item img {
        width: 100% !important;
    }

    .researchanddevelopment-banner {
        flex-direction: column !important;
        align-items: flex-start !important;
        gap: 20px !important;
    }

    .researchanddevelopment-container {
        background-image: url(/public/images/Background_R&D_Tablet.jpg) !important;
        background-size: cover !important;
    }

    /* Product */

    .product-page {
        flex-direction: column !important;
    }

    .product-image-area {
        text-align: center;
    }

    .product-image-area img {
        width: 100%;
        padding-bottom: 60px;
    }

    .popup-container {
        max-width: 400px !important;
    }

    .popup-content {
        grid-template-columns: repeat(1, 1fr) !important;
        padding-bottom: 40px !important;
    }

    .popup-image {
        width: 100%;
    }

    .popup-info {
        padding: 30px;
        width: auto !important;
    }

    .popup-video-container {
        max-width: 400px !important;
    }

    .colorize {
        filter: brightness(0) invert(1);
        width: 24px;
        height: 24px;
    }
   
    .award-certificate-list {
        justify-items: center;
    }   

    .award-certificate-item {
        width: 240px !important;
    }
}

/* 작은 모바일 (480px 미만) */
@media screen and (max-width: 479px) {
    .main-container {
        height: 600px !important;
    }

    .main-title {
        font-size: 22px !important;
        font-weight: 700 !important;
        bottom: 0;
        left: 0;
        position: absolute !important;
        clip-path: polygon(0% 0%, 90% 0%, 100% 100%, 0% 100%) !important;
        background-color: var(--white) !important;
        color: var(--simgTangerine) !important;
        border-radius: 0 !important;
    }

    .social-buttons{
        position: absolute;
        display: none;
        z-index: -100;
    }

    #phone-number{
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        clear: both;
        width: 100%;
    }

    .top-bar-container{
        margin: 0 0 !important;
        padding: 0px !important;
        display: flex;
        flex-wrap: wrap;
        justify-content: center !important;
    }

    .container,
    .header-container,
    .main-container,
    .simulator-container,
    .researchanddevelopment-container,
    .news-container,
    .contact-container,
    .footer-container,
    .menu-container,
    .about-us-container,
    .milestones-container,
    .latest-news-container,
    .award-certificate-container,
    .our-clients-container,
    .business-container,
    .product-container,
    .top-bar-container,
    .menu-tag,
    .contact-menu-container,
    .researchanddevelopment-container,
    .researchanddevelopment-page-container,
    .researchanddevelopment-products-container,
    .product-info-container,
    .product-reference-container,
    .latest-news-detail-container {
        margin: 0 0;
        padding: 0 5%;
        position: relative;
    }

    .row {
        flex-direction: column !important;
    }

    .col iframe {
        height: 400px;
        padding-bottom: 60px;
    }

    .menu-tag {
        top: 40px !important;
    }

    .nav-menu, .nav-business-area {
        display: none !important;
    }

    .menu-toggle {
        background: none;
        border: none;
        cursor: pointer;
        position: absolute;
        right: 40px;
        display: block !important;
    }

    .side-nav-menu {
        flex-direction: column;
        position: fixed;
        top: 0;
        right: 0;
        width: 300px;
        height: 100%;
        box-shadow: -10px 0 30px rgba(0,0,0,0.1);
        z-index: 1000;
        box-sizing: border-box;
        display: none !important;
    }

    .side-nav-menu.active {
        display: flex !important;
        z-index: 1100;
    }

    .close-menu {
        top: 45px;
        right: 45px;
        display: block;
        position: absolute;
        background: none;
        border: none;
        cursor: pointer;
        margin-bottom: 20px;
    }

    .product-list-menu,
    .heavy-equipment-menu,
    .safety-training-accident-experience-menu,
    .manufacturing-menu,
    .shipbuilding-industry-menu,
    .culture-tourism-menu {
        position: absolute;
        top: 0;
        right: 0;
        left:0;
        width: 400px;
        height: 100%;
        box-shadow: none;
        flex-direction: column;
        display: none;
        z-index: 1200;
    }

    .product-list-menu.active,
    .heavy-equipment-menu.active,
    .safety-training-accident-experience-menu.active,
    .manufacturing-menu.active,
    .shipbuilding-industry-menu.active,
    .culture-tourism-menu.active {
        display: flex !important;
    }

    .product-button {
        background: none;
        border-style: none;
        padding: 0 0;
        width: 100%;
        text-align: left;
    }

    .side-nav-menu ul {
        padding-top: 80px !important;
        flex-direction: column;
        width: 100%;
    }
    
    .side-nav-menu ul li {
        width: 100%;
        text-align: left;
    }
    
    .side-nav-menu ul li a {
        padding: 15px 40px;
        display: block;
        text-decoration: none;
        color:var(--black);
    }
    
    .side-nav-menu ul li a:hover {
        background-color: var(--gray100);
    }

    .side-nav-menu .business-button {
        margin: 15px 40px;
        background-color: var(--simgBlue);
        color: var(--white);
    }

    .side-nav-menu .business-button:hover {
        background-color: var(--simgIndigo);
    }

    .product-back-button {
        top: 45px;
        left: 35px;
        display: block;
        position: absolute;
        background: none;
        border: none;
        cursor: pointer;
        margin-bottom: 20px;
    }

    .news-item {
        width: 100%;
        flex: 0 0 calc(100%) !important;
    }

    .main-container .main-background h1 {
        font-size: 26px !important;
    }

    .main-background p {
        top: 50px !important;
        font-size: 18px !important;
    }

    .cta-button {
        font-size: 16px !important;
    }

    .menu-detail-button {
        margin-top: 0;
        top: auto !important;
        bottom: 0 !important;
        left: 0 !important;
        right: 0 !important;
    }

    .simulator-container {
        display: block !important;
        padding: 0 10% !important;
    }

    .simulator {
        width: 100% !important;
        height: 370px !important;
        margin-bottom: 40px;
        position: relative;
        clear: both;
    }

    .simulator:last-child {
        margin-bottom: 0 !important;
    }

    .simulator-info {
        position: static !important;
    }

    .simulator iframe {
        height: 180px !important;
    }

    .simulator-type {
        font-size: 16px !important;
    }

    .simulator-title {
        font-size: 24px !important;
    }

    .simulator-description {
        font-size: 14px !important;
    }

    .menu-detail-button,
    .news-detail-button {
        font-size: 16px !important;
    }

    .section-title,
    .client-title,
    .ontact-title {
        font-size: 32px !important;
        text-align: center;
    }

    .section-subtitle,
    .client-subtitle,
    .contact-subtitle {
        font-size: 14px !important;
        padding: 0 12% !important;
    }

    .news-wrapper,
    .client-wrapper {
        width: 80% !important;
    }

    .news-item {
        width: 100%;
        flex: 0 0 calc(100%) !important;
    }

    .news-content {
        height: 210px !important;
    }

    .swiper-slide {
        width: 100%;
        flex: 0 0 calc(100%) !important;
    }

    .news-title {
        font-size: 16px !important;
    }

    .form-control {
        font-size: 14px !important;
    }

    html[lang="en"] .footer-container {
        min-height: 760px !important;   
    }

    html[lang="vi"] .footer-container {
        min-height: 800px !important;   
    }

    .footer-container {
        height: 720px !important;
        padding: 0 !important;
    }

    .footer-sections {
        display: block !important;
    }

    .footer-info-section {
        width: 100% !important;
        text-align: center;
        padding-bottom: 30px !important;
    }

    .footer-subtitle {
        width: 100% !important;
        padding: 0 20%;
        text-align: center ;
    }

    .footer-info-detail-section {
        width: 100% !important;
        justify-content: space-around;
        flex-direction: column;

    }

    .footer-info-detail-section1,
    .footer-info-detail-section2 {
        width: 100% !important;
        position: none !important;
        margin-left: 0 !important;
    }

    .footer-info-detail-section1 {
        background-color: var(--gray900);
        padding: 30px 0 !important;
    }

    .footer-info-title,
    .footer-info-text1, 
    .footer-info-text2 {
        padding-left: 10%;
    }

    .footer-info-detail-section2 {
        padding: 30px 0 !important;
    }

    .footer-bottom {
        height: auto !important;
        min-height: 100px;
        flex-direction: column;
        padding-top: 15px;
        background-color: var(--gray900) !important;
    }
    .footer-bottom-list {
        flex-wrap: wrap;
        flex-direction: row !important;
        justify-content: center !important;
        padding: 0 !important;
        gap: 10px;
    }

    .copyright {
        margin-top: 10px;
        color: var(--gray500);
        white-space: nowrap;
        text-align: center !important;
    }

    .privacy {
        display: flex;
        flex-direction: row;
        gap: 20px;
        padding: 0 10px;
    }

    /* About Us */

    .milestones-list {
        justify-content: center;
        flex-direction: column;
    }

    .milestones-item {
        width: auto !important;
        margin: 20px 0 !important;
    }

    /* News */
    
    .latest-news-item {
        flex-direction: column;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        margin-bottom: 40px !important;
    }

    .latest-news-item img {
        width: 100% !important;
    }

    .latest-news-info {
        padding: 20px;
    }
    
    /* Our Clients */

    .our-clients-list {
        grid-template-columns: repeat(2, 1fr) !important;
    }

    /* Award Certificate */

    .award-certificate-list {
        grid-template-columns: repeat(1, 1fr) !important;
    }

    /* Business */

    .col {
        width: auto !important;
    }

    /* Business */
    
    .contact-partner-item,
    .contact-product-item {
        width: auto !important;
       
        margin: 20px 0 !important;
    }

    /* researchanddevelopment */

    .researchanddevelopment-page-container {
        align-items: flex-start !important;
        flex-direction: column !important;
    }

    .researchanddevelopment-page-message {
        padding-right: 0 !important;
    }

    .researchanddevelopment-page-image {
        margin-bottom: 40px;
    }
    
    .researchanddevelopment-products-list {
        grid-template-columns: repeat(1, 1fr) !important;
    }

    .researchanddevelopment-products-item {
        width: 100% !important;
    }

    .researchanddevelopment-products-item img {
        width: 100% !important;
    }

    .researchanddevelopment-banner {
        flex-direction: column !important;
        align-items: flex-start !important;
        gap: 20px !important;
    }

    .researchanddevelopment-type {
        width: max-content !important;
    }

    .researchanddevelopment-container {
        background-image: url(/public/images/Background_R&D_Tablet.jpg) !important;
        background-size: cover !important;
    }

    /* Product */

    .product-page {
        flex-direction: column !important;
    }

    .product-image-area {
        text-align: center;
    }

    .product-image-area img {
        width: 100%;
        padding-bottom: 60px;
    }

    .popup-container {
        max-width: 290px !important;
        max-height: 80% !important;
    }

    .popup-content {
        grid-template-columns: repeat(1, 1fr) !important;
        gap: 0px !important;
        padding-bottom: 40px !important;
    }

    .popup-image {
        width: 100%;
    }

    .popup-info {
        padding: 20px;
        width: auto !important;
    }

    .popup-video-container {
        max-width: 290px !important;
    }

    .colorize {
        filter: brightness(0) invert(1);
        width: 24px;
        height: 24px;
    }
   
    .award-certificate-list {
        justify-items: center;
    }   

    .award-certificate-item {
        width: 240px !important;
    }
}


/* Header */
.header-container {
    border-bottom: 1px solid var(--gray200);
    height: 80px;
    z-index: 1000 !important;
    overflow: visible !important;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.top-bar {
    width: 100%;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.top-bar-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 4px;
}

.top-bar-container li {
    padding: 4px 6px;
    width: 40px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.top-bar-container li a {
    color: var(--simg-white);
    text-decoration: none;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    border-radius: 6px;
    padding: 4px 10px;
}

.top-bar-container li a:hover {
    font-weight: 700;
    color: var(--white);
    text-decoration: underline;
}

.top-bar-container li:hover {
    background-color: #36459A;
    border-radius: 6px;
}

/* Fixed Button */
.fixed-button {
    position: fixed;
    right: 5%;
    background-color: var(--white);
    border: none;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    cursor: pointer;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    transition: background-color 0.3s ease;
    z-index: 1998;
    border: 2px solid var(--gray100);
}

.fixed-button:first-child {
    bottom: 115px;
}

.fixed-button:last-child {
    bottom: 40px;
}

.fixed-button:first-child:hover {
    border: solid 2px #FF1818;
}

.fixed-button:last-child:hover {
    border: solid 2px #10CF1A;
}

.main-container {
    height: 500px;
    overflow: hidden;
    align-content: center;
}

.background-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}

html[lang="en"] .main-title {
    clip-path: polygon(0% 0%, 92% 0%, 100% 100%, 0% 100%); 
}

.main-title {
    display: inline-block;
    padding: 10px 40px 10px 20px;
    margin: 0;
    position: relative;
    clip-path: polygon(0% 0%, 100% 0%, 90% 100%, 0% 100%);
    border-radius: 6px;
    z-index: 1;
}

.line-title {
    color: var(--simgTangerine);
    text-shadow:
        -1px -1px 0 var(--white),
        1px -1px 0 var(--white),
        -1px 1px 0 var(--white),
        1px 1px 0 var(--white);
}

/* navigation */

.nav-menu {
    float: right;
    position: relative;
    display: flex;

    margin: 0 0 !important;
}

html[lang="en"] .nav-menu,
html[lang="ja"] .nav-menu,
html[lang="vi"] .nav-menu {
    gap: 0px;
}

html[lang="en"] .nav-menu-item,
html[lang="ja"] .nav-menu-item,
html[lang="vi"] .nav-menu-item {
    padding: 0 10px;
}

.nav-menu a {
    display: block;
    position: relative;
    text-decoration: none !important;
    padding: 0 15px;
    align-content: center;
}

.nav-business-area,
.nav-business-area a::after {
    align-content: center;
}

.nav-business-area a {
    text-decoration: none;
    border-radius: 6px;
}

.nav-menu a::after {
    content: '';
    display: block;
    width: 0;
    height: 4px;
    background: var(--simgNavy);
    position: absolute;
    bottom: 0;
    left: 0;
    transition: width 0.3s;
}

.nav-menu a:hover::after {
    width: 100%;
}

.nav-menu a:hover {
    color: var(--simgNavy);
}

.nav-menu li:hover .dropdown,
.nav-menu li:focus-within .dropdown,
.dropdown:hover {
    display: block;
    position: absolute;
    left: 86px;
    z-index: 1020 !important;
}

.nav-menu-item {
    height: 80px;
}

.dropdown {
    display: none;
    position: absolute;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
    z-index: 1200 !important;
    padding: 10px !important;
}

.dropdown li {
    padding: 5px 0 !important;
    margin: 0 0;
    white-space: nowrap;
    display: block;
    position: relative;
}
.dropdown li:first-child {
    padding-top: 0px !important;
}

.dropdown li a {
    text-decoration: none;
    display: block;
    margin: 0 0;
    padding: 10px;
    position: relative;
}

.dropdown li a:hover {
    color: var(--simgNavy);
    position: relative;
}
.dropdown li:hover .dropdown-submenu {
    display: block;
    z-index: 1300 !important;
}

.dropdown-submenu {
    display: none;
    position: absolute;
    top: -10px;
    left: 100%;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
    z-index: 1300 !important;
}

.dropdown-submenu {
    list-style: none;
    padding: 10px;
    margin: 0 0;
}

.dropdown-submenu li {
    padding: 12px 16px;
    white-space: nowrap;
    display: block;
}

.dropdown-submenu li a {
    color: var(--black);
    text-decoration: none;
    display: block;
}

.dropdown-submenu li a:hover {
    color: var(--simgNavy);
}

.header-arrow {
    width: 16px;
    height: 16px;
    margin-left: 8px;
}

.business-button {
    padding: 14px 20px !important;
    margin-top: 10px;
}

.business-button:hover {
    background-color: var(--simgIndigo);
    color: var(--white) !important;
}

.business-button::after {
    display: none !important;
}

/* tag */
.aboutUs-tag {
    color: var(--gray500);
}

/* main-simulator */

.simulator-container {
    margin: 60px 0;
    display: flex;
    justify-content: space-around;
}

.simulator {
    width: 680px;
    height: 553px;
    border: 1px solid var(--gray200);
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
    margin-right: 40px;
    overflow: hidden;
}
.simulator:last-child {
    margin-right: 0;
}

.simulator iframe {
    width: 100%;
    height: 73%;
}

.simulator-info {
    text-align: left;
    position:relative;
}

.simulator-type {
    margin-top: 24px;
    margin-left: 5%;
    margin-bottom: 0;
}

.simulator-title{
    margin-top: 4px;
    margin-left: 5%;
    margin-bottom: 0;
}

.simulator-description {
    margin-top: 2px;
    margin-left: 5%;
    font-size: 14px;
    text-transform: uppercase;
}

.menu-detail-button {
    display: block;
    padding: 3% 6%;
    text-decoration: none;
    position: absolute;
    top: 20%;
    right: 5%;
    border-radius: 6px;
    background-image: linear-gradient(90deg, #25AAE2 0%, #2D5FAB 100%);
}

.menu-detail-button:hover {
    text-decoration: none;
    color: var(--white);
    background-image: linear-gradient(90deg, #0f6f98 0%, #0d336c 100%);
}

/* main-researchanddevelopment */

.client-container {
    padding-bottom: 60px;
}

.researchanddevelopment-container {
    background-image: url("/public/images/Background_R&D_PC.jpg");
    background-size: 200% auto;
    background-attachment: fixed;
    background-position: center top;
    background-repeat: repeat-y;
    overflow: hidden;
}

.researchanddevelopment-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url("/public/images/Background_R&D_PC.jpg");
    background-size: cover;
    background-position: center;
    transform: translateZ(-1px) scale(2);
    z-index: -1;
    will-change: transform;
}

.researchanddevelopment-banner {
    padding: 80px 0;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    position: relative;
    z-index: 1;
}

.researchanddevelopment-type {
    width: fit-content;
    font-size: 18px;
    padding: 4px 14px 4px 8px;
    clip-path: polygon(0% 0%, 100% 0%, 96% 100%, 0% 100%);
    border-radius: 6px;
    margin-bottom: 10px;
    text-transform: uppercase;
}

.researchanddevelopment-title {
    margin-bottom: 4px;
}

.researchanddevelopment-detail-button {
    display: block;
    padding: 15px 30px;
    text-decoration: none;
    border-radius: 6px;
}

.researchanddevelopment-detail-button:hover {
    text-decoration: none;
    color: var(--simgBlue);
    background: var(--gray200)
}

/* main-news */

.button-arrow {
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
}

#news-prev-button {
    top: 58%;
    left: 6%;
}

#news-next-button {
    top: 58%;
    right: 6%;
}

#client-prev-button {
    top: 74%;
    left: 6%;
    color: var(--gray200);

}

#client-next-button {
    top: 74%;
    right: 6%;
    color: var(--gray200);

}

.section-title {
    padding-top: 60px;
}

.section-subtitle {
    flex-grow: 0;
    margin: 10px 0 40px 0;
}

.news-wrapper,
.client-wrapper {
    margin: 0 auto;
    display: flex;
    width: 100%;
    overflow: hidden;
    padding-bottom: 60px;
    justify-content: center;
    align-items: center;
}

.news-wrapper {
    min-height: 440px;
}

.news-carousel,
.client-carousel {
    display: flex;
    transition: transform 400ms ease;
    width: 100%;
}

.news-item {
    width: calc(25% - 0px);
    overflow: hidden;
    transition: transform 0.5s ease;
    flex-shrink: 0; 
    padding: 0px 10px;
    min-height: 400px;
}

.news-item img {
    width: 100%;
    height: 240px;
    object-fit: cover;
}

.news-content {
    border: 1px solid var(--gray200);
    padding: 0px 30px;
    height: 200px;
    position: relative;
}

.news-title {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 22px;
    width: 100%;
}

.news-date {
    display: block;
    padding-bottom: 4px;
}

.news-description {
    font-weight: 400 !important;
    margin-top: 6px;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis !important;
    width: 100%;
}

.news-detail-button {
    background-image: linear-gradient(to right, var(--simgBlue), var(--simgIndigo));
    flex-grow: 0;
    padding: 5% 0;
    text-decoration: none;
    position: absolute;
    left:0;
    right: 0;
    bottom: 0;
}

.news-detail-button:hover {
    text-decoration: none;
    color: var(--white);
    background-image: linear-gradient(to right, var(--simgIndigo), var(--simgNavy));
}

/* main-client */

.client-logo:last-child {
    margin-right: 0;
}
.client-logo {
    flex: 0 0 calc(20% - 20px);
    margin-right: 20px;
    overflow: hidden;
    transition: transform 0.5s ease;
    flex-shrink: 0;
}

.client-logo:last-child {
    margin-right: 0;
}

.client-logo img {
    display: inline-block;
    width: 100%;
}
.swiper-slide img {
    width: 100%; 
    height: auto; 
    object-fit: contain;
}

.swiper-slide {
    text-align: center;
}

/* main-contact us */

.contact-container {
    padding-bottom: 100px;
}

.contact-title-bg {
    background: url(/public/images/Background_ContectUs_PC.jpg);
    background-repeat: no-repeat;
    width: 100%;
    height: 100%;
}

.contact-partner-item {
    margin-right: 20px;
    border-top: 4px solid var(--simgTangerine);
    padding: 40px 40px !important;
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
   
}
.contact-product-item {
    margin-right: 20px;
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
    padding: 40px 40px !important;
    border-top: 4px solid var(--simgBlue);
}

.contact-item-title {
    padding-bottom: 20px;
}

.contact-item-subMessage {
    padding-bottom: 10px;
}

.contact-item-subMessage:last-child {
    padding-bottom: 0;
}

.contact-form {
    margin-top: 40px;
    display: block;
    width: 100%;
    min-height: 500px;
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
    border-top: 3px solid  var(--black);
    border-bottom: 2px solid  var(--black);
    position: relative;
}

.error {
    color: #F65633;
    position: relative;
}

input:focus {
    outline: none;
}

#external-content {
    display: block;
    border: 1px solid red;
    width: 100%;
    height: 100%;
}

/* Footer */

.footer-container {
    min-height: 300px;
}

.footer-sections {
    display: flex;
    justify-content: space-around;
}

.footer-info-section {
    padding-top: 60px;
    width: 30%;
}

.footer-info-detail-section {
    width: 80%;
    display: flex;
    justify-content:space-around
}

.footer-info-detail-section1 {
    width: 45%;
    padding-top: 64px;
    padding-left: 20px;
}

.footer-info-detail-section2 {
    padding-top: 64px;
    padding-left: 20px;
}

.footer-subtitle {
    line-height: 1.5 !important;
}

.footer-info-title {
    margin-bottom: 10px;
}

.footer-bottom {
    height: 60px;
    width: 100%;
    display: flex;
    align-items: center;
    position: relative;
    border: 1px solid var(--gray700);
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--gray900);
}

html[lang="en"] .footer-info-detail-section1 {
    width: 60%;
}

html[lang="en"] .footer-container {
   min-height: 340px;   
}

html[lang="vi"] .footer-container {
    min-height: 360px;   
}

.footer-bottom-list {
    width: 100%;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    padding: 0 10%;
    margin: 0 !important;
}

.privacy {
    width: auto;
}

.copyright {
    width: 80%;
    white-space: nowrap;
    text-align: right;
}

.privacy a,
.privacy a:hover {
    white-space: nowrap;
    color: var(--gray500);
    text-decoration: none;
    margin-right: 20px;
}

.privacy a:hover {
    color: var(--gray600);
}

.footer-contact {
    list-style: none;
    padding: 0;
    margin: 0;
}

.contact-item {
    display: flex;
}

.contact-title {
    min-width: 60px;
}

/* About Us Page */

.about-us-container {
    overflow: visible;
    text-align: center;
    align-items: center;
}

.about-us-title {
    padding-top: 70px;
}

.about-us-message {
    top: -30px;
    padding-right: 20px;
    padding-bottom: 60px;
    white-space: pre-line;
    position: relative;
}
.about-us-message p {
    font-family: 'Noto Sans KR', sans-serif;
    font-size: 18px;
    font-weight: 400;
    line-height: normal;
}

html[lang="ja"] .about-us-message p {
    font-family: 'Noto Sans JP', sans-serif;
}

html[lang="vi"] .about-us-message p {
    font-family: 'Noto Sans', sans-serif;
}

.milestones-container {
    padding-bottom: 100px;
}

.milestones-list {
    display: flex;
    justify-content: center;
}

.milestones-item {
    width: calc(30% - 10px);
    border-top: 4px solid var(--simgBlue);
    margin: 0 40px;
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
    padding: 40px;
    text-align: left;
    font-family: 'Noto Sans KR', sans-serif;
}

html[lang="ja"] .milestones-item {
    font-family: 'Noto Sans JP', sans-serif;
}

html[lang="vi"] .milestones-item {
    font-family: 'Noto Sans', sans-serif;
}

.milestones-item:first-child {
    border-top: 4px solid var(--black);
    margin: 0 0;
}

.milestones-item:last-child {
    border-top: 4px solid var(--simgTangerine);
    margin: 0 0;
}

.milestones-item li{
    list-style: disc !important;
}

.milestones-item > p{
    color: var(--gray500);
}

/* Latest News Page */

.latest-news-container {
    padding-top: 70px;
    padding-bottom: 20px;
}

.latest-news-list {
    border-top: 4px solid #000;
    border-bottom: 4px solid #000;
    padding: 20px;
    display:flex;
    flex-wrap: wrap;
}

.latest-news-item {
    display: flex;
    align-items: center;
    padding-bottom: 20px;
}

.latest-news-item:last-child {
    padding-bottom: 0;
}

.latest-news-info {
    padding-left: 30px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    height: 230px; 
}

.latest-news-info p {
    margin: 5px 0;
}

.latest-news-info p a {
    color: var(--black);
}

.latest-news-info-title a {
    text-decoration: none;
}

.pagination .page-item.active .page-link {
    color: white !important;
    background: #ccc;
}

#paging {
    list-style: none;
    padding-top: 40px !important;
    padding-bottom: 60px !important;
    text-align: center;
}

#paging li:nth-child(-n+12) {
    display: inline-block;
}

#paging li {
    display: inline;
    margin: 0 3px;
}

#paging li {
    display: none;
}

#paging li:first-child,
#paging li:nth-child(2),
#paging li:last-child,
#paging li:nth-last-child(2) {
    display: inline-block;
}

#paging li a {
    text-decoration: none;
    padding: 10px 16px;
    border: 1px solid var(--gray200);
    transition: background-color 0.3s, color 0.3s;
}

#paging li a:hover, #paging li a:focus {
    background-color: var(--simgBlue);
    color: var(--white);
}

#paging li a.current {
    background-color: var(--simgBlue);
    color: white;
    border-color: var(--simgIndigo);
}

.detail-news-introduce img {
    display: block;
    margin: auto;
    max-width: 100%;
    max-height: 50%;
}

/* Award Certificate Page */

.award-certificate-container {
    padding-top: 70px;
    padding-bottom: 20px;
}

.award-certificate-list {
    border-top: 4px solid #000;
    border-bottom: 4px solid #000;
    width: 100%;
    border-collapse: collapse;
    margin: 0 auto;
    display: grid;
    gap: 10px;
    grid-template-columns: repeat(5, 1fr);
}

.award-certificate-item {
    padding: 20px;
    text-align: center;
}

.award-certificate-item img {
    border: 1px solid rgb(228, 228, 228);
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 160px;
    height: auto;
    display: block;
    margin: 0 auto;
    transition: transform 0.3s ease;
}

.award-certificate-item img:hover {
    transform: scale(1.1);
}

/* Our Clients Page */

.our-clients-container {
    padding-top: 70px;
    padding-bottom: 20px;
}

.our-clients-list {
    border-top: 4px solid #000;
    border-bottom: 4px solid #000;
    width: 100%;
    border-collapse: collapse;
    margin: 0 auto;
    display: grid;
    gap: 10px;
    grid-template-columns: repeat(5, 1fr);
    margin-bottom: 60px;
}

.our-clients-item {
    padding: 20px;
    text-align: center;
}

.our-clients-item img {
    width: 100%;
    max-width: 260px;
    height: auto;
    display: block;
    margin: 0 auto;
    transition: transform 0.3s ease;
}

.our-clients-item img:hover {
    transform: scale(1.1);
}

.business-container {
    padding-top: 60px;
    padding-bottom: 100px;
}

/* Products Page */

.product-container {
    padding-top: 60px;
    padding-bottom: 60px;
}

.product-page {
    display: flex;
}

.product-info-model,
.product-info-feature {
    padding-top: 30px;
}

.product-info-model-list-1 {
    width: 100%;
    display: grid;
    gap: 30px;
    grid-template-columns: repeat(1, 1fr);
}

.product-info-model-list-4 {
    width: 100%;
    display: grid;
    gap: 30px;
    grid-template-columns: repeat(2, 1fr);
}

.product-info-model-title,
.product-info-feature-title {
    padding-left: 10px;
    padding-bottom: 10px;
}

.product-info-model-item {
    border: 4px solid var(--white);
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
    padding: 20px 30px;
}

.product-info-model-item.active {
    border: 4px solid var(--simgBlue);
}

.product-info-model-item.active .product-info-model-item-title,
.product-info-model-item.active .product-info-model-item-subTitle {
    color: var(--simgIndigo);
}

.product-info-area {
    text-align: center;
}

.product-info-feature-contents {
    padding-left: 30px;
}

.product-info-feature-contents li {
    list-style:disc;
    padding-bottom: 4px;
}

.product-info-reference {
    padding-top: 30px;
}

.product-info-reference-button {
    padding: 10px 50px;
    border-radius: 10px;
    border: none;
}

.product-info-reference-button:hover {
    background-color: var(--gray200);
}

.product-image-area {
    max-width: 100%;
    height: auto;
}


/* popup */

.popup-blur {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    backdrop-filter: blur(10px);
}

.popup {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: rgba(0,0,0,var(--simgOpacity40));
}

.popup-container {
    background-color: #fefefe;
    margin: auto;
    border: 1px solid #888;
    width: 100%;
    max-width: 1000px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    border-radius: 20px;
    overflow: hidden;
}

.popup-content {
    display: grid;
    gap: 30px;
    grid-template-columns: repeat(2, 1fr);
}

.popup-video-container {
    background-color: #fefefe;
    margin: auto;
    width: 100%;
    max-width: 1000px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    border-radius: 20px;
    overflow: hidden;
}

.close {
    position: absolute;
    top: 30px;
    right: 30px;
    z-index: 1003;
}

.close:hover,
.close:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}

.popup-video {
    text-align: center;
    margin-bottom: 20px;
}

.popup-info {
    width: 90%;
    margin: auto 0;
    text-align: left;
}

.popup-info div {
    white-space: pre-line;
    font-size: 14px;
}

#inquiryButton {
    position: relative;
    top: 40px;
    padding: 10px 60px;
    cursor: pointer;
    border: none;
    border-radius: 10px;
    text-decoration: none;
}

#inquiryButton:hover {
    color: var(--white);
    
    background: var(--simgIndigo)
}

/* Business Page */

.contact-menu-container {
    padding-top: 70px;
    padding-bottom: 100px;
}

/* researchanddevelopment Page */

.researchanddevelopment-page-container {
    overflow: visible;
    text-align: center;
    align-items: center;
    display: flex;
    justify-content: space-between;
}

.researchanddevelopment-page-title {
    padding-top: 70px !important;
}

.researchanddevelopment-page-message {
    padding-bottom: 40px;
    padding-right: 40px;
    white-space: pre-line
}

.researchanddevelopment-products-container {
    padding-top: 40px;
    padding-bottom: 60px;
}

.researchanddevelopment-page-content {
    width: 100%;
    height: 100%;
    padding: 0 0 !important;
    background-image: url('/public/images/Background_Researchanddevelopment_title.jpg');
}

.researchanddevelopment-products-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    align-items: stretch;
}

.researchanddevelopment-products-item {
    width: 100%;
    border: 1px solid var(--gray200);
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
}

.researchanddevelopment-products-item img{
    width: 100%;
    height: auto;
    object-fit: cover;
}

.researchanddevelopment-products-item-type {
    padding-top: 30px;
    padding-left: 30px;
}

.researchanddevelopment-products-item-title {
    padding-top: 4px;
    padding-left: 30px;
}

.researchanddevelopment-products-item-content {
    padding: 4px 20px 30px 36px;
    flex-grow: 1;
}

.researchanddevelopment-products-item-content li {
    list-style: disc !important ;
}

.researchanddevelopment-products-button-area {
    padding-top: 40px;
    margin: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.researchanddevelopment-page-contact-button {
    display: block;
    padding: 18px 42px;
    text-decoration: none;
    background-image: linear-gradient(90deg, #25AAE2 0%, #2D5FAB 100%);
    border-radius: 6px;
}

.researchanddevelopment-page-contact-button:hover {
    color: var(--white);
    text-decoration: none;
    background-color: var(--simgIndigo);
}

/* detail news */

.latest-news-detail-container {
    padding-top: 70px;
    padding-bottom: 100px;
}

.latest-news-detail-content {
    border-top: 4px solid #000;
    border-bottom: 4px solid #000;
    width: 100%;
}

.detail-news-title {
    padding-top: 20px;
    padding-bottom: 6px;
}

.detail-news-upload-date {
    padding-bottom: 20px;
}

.detail-news-image-description {
    padding-top: 20px;
    padding-bottom: 30px;
}

.detail-news-introduce {
    padding-bottom: 40px;
}

.detail-news-content-title {
    padding-bottom: 6px;
}

.detail-news-content-message {
    padding-bottom: 40px;
}

/* Privacy */

.line {
    border: 1px solid var(--gray200);
    opacity: 50%;
    width: 100%;
}


/* news detail */
.ql-align-center{
    text-align: center;
}
.ql-align-right{
    text-align: right;
}

/* R&D */
.researchanddevelopment-title-horizontal-stack {
    display: flex;               
    align-items: center;         
    justify-content: space-between;
    margin-bottom: 10px;    
}

.researchanddevelopment-text-area {
    display: flex;
    flex-direction: column;
}

#popupMediaButton{
    margin-top: 14px;
    margin-right: 30px;
    background-color: var(--simgBlue);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    border: 1px solid var(--simgBlue);
}

#popupMediaButton img {
    scale:calc(70%);
    cursor: pointer;
}

#popupMediaButton:hover{
    background-color: var(--simgIndigo);
    border: 1px solid var(--simgIndigo);
}

#popupMediaButton:active{
    background-color: var(--simgNavy);
    border: 1px solid var(--simgNavy);
}

#popupVideo {
    width: 100%;    
    height: auto;    
    display: block;
}

video::-webkit-media-controls-enclosure {
    overflow: hidden;
}

video::-webkit-media-controls-download-button {
    display: none !important;
}

video::-webkit-media-controls-playback-rate-button {
    display: none !important;
}