* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

body {
    color: #333;
    line-height: 1.6;
}

.header {
    background: linear-gradient(to right, #1e5799, #2989d8);
    color: white;
    padding: 10px 0;
    position: relative;
}

.container {
    width: 100%;
    max-width: 1500px;
    margin: 10px auto;
    padding: 0px 15px;
}

.logo-container {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.logo {
    width: 80px;
    margin-right: 20px;
}

.company-name {
    font-size: 24px;
    font-weight: bold;
}

.language-switch {
    position: absolute;
    top: 20px;
    right: 20px;
}

.language-btn {
    background-color: white;
    color: #1e5799;
    border: none;
    margin: 10px 50px;
    padding: 10px 30px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
}

.nav {
    background-color: #f8f8f8;
    border-bottom: 1px solid #ddd;
}

.nav-list {
    display: flex;
    list-style: none;
}

.nav-item {
    padding: 15px 20px;
}

.nav-item a {
    text-decoration: none;
    color: #333;
    font-weight: bold;
}

.nav-item a:hover {
    color: #2989d8;
}

.hero {
    position: relative;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../images/others/team-img.png');
    background-size: cover;
    background-position: center;
    filter: brightness(1.3) contrast(0.15) saturate(0.7);
    z-index: 0;
}

.hero::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0);
    z-index: 1;
}
        
.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1000px;
    padding: 0 20px;
}

.hero-title {
    font-size: 36px;
    margin-bottom: -30px;
    margin-top: -50px;
    color: #1e5799;  /* 改为深蓝色 */
    text-shadow: 2px 2px 4px rgba(255, 255, 255, 0.8);  /* 白色阴影 */
}

.cta-button {
    display: inline-block;
    background-color: #2989d8;
    color: white;
    padding: 12px 30px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.3s;
    margin-top: 150px; 
}


.cta-button:hover {
    background-color: #1e5799;
}

.section {
    padding: 60px 0;
}

.section-title {
    text-align: center;
    font-size: 30px;
    margin-bottom: 40px;
    color: #1e5799;
}

.about-content {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
}

.about-text {
    flex: 1;
    min-width: 300px;
    margin-left: 180px;
}

.about-image {
    flex: 1;
    min-width: 300px;
    border-radius: 8px;
    overflow: hidden;
    display: flex;
    justify-content: flex-end;
}

.about-image img {
    width: 50%;
    height: auto;
    display: block;
    border-radius: 8px;
    margin-right: 250px;
}

.services {
    background-color: #f8f8f8;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.service-card {
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

.service-card:hover {
    transform: translateY(-10px);
}

.service-image {
    height: 200px;
}

.service-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.service-content {
    padding: 20px;
}

.service-title {
    font-size: 20px;
    margin-bottom: 10px;
    color: #1e5799;
}

/* Product comparison cards */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(700px, 1fr));
    gap: 40px;
    margin-top: 30px;
}

.product-card {
    background-color: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.product-images {
    display: flex;
    height: 300px;
    position: center;
}

.product-image {
    flex: 1;
    position: relative;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform 0.3s;
}

.product-image:hover img {
    transform: scale(1.05);
}

.product-image-label {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: rgba(41, 137, 216, 0.9);
    color: white;
    padding: 8px;
    text-align: center;
    font-weight: bold;
    font-size: 14px;
}

.product-content {
    padding: 25px;
}

.product-title {
    font-size: 22px;
    color: #1e5799;
    margin-bottom: 15px;
    font-weight: bold;
}

.product-description {
    color: #555;
    line-height: 1.7;
    font-size: 15px;
}

.equipment-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.equipment-item {
    border: 1px solid #ddd;
    border-radius: 8px;
    overflow: hidden;
}

.equipment-image {
    height: 250px;
}

.equipment-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.equipment-name {
    padding: 15px;
    text-align: center;
    background-color: #f8f8f8;
    font-weight: bold;
    height: 80px;
}

.partners {
    background-color: #f8f8f8;
}

.partners-logo {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 40px;
    margin-top: 30px;
}

.partner-item {
    width: 250px;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
}

.partner-item img {
    max-width: 80%;
    max-height: 60%;
}

.footer {
    background-color: #333;
    color: white;
    padding: 50px 0 20px;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 30px;
}

.footer-section {
    flex: 1;
    min-width: 250px;
}

.footer-title {
    font-size: 18px;
    margin-bottom: 20px;
    color: #2989d8;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: #ccc;
    text-decoration: none;
}

.footer-links a:hover {
    color: white;
}

.contact-info div {
    margin-bottom: 10px;
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #444;
    color: #ccc;
    font-size: 14px;
}

.timeline {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
}

.timeline::after {
    content: '';
    position: absolute;
    width: 6px;
    background-color: #2989d8;
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -3px;
}

.timeline-item {
    padding: 10px 40px;
    position: relative;
    background-color: inherit;
    width: 50%;
}

.timeline-item::after {
    content: '';
    position: absolute;
    width: 25px;
    height: 25px;
    right: -17px;
    background-color: white;
    border: 4px solid #2989d8;
    top: 15px;
    border-radius: 50%;
    z-index: 1;
}

.left {
    left: 0;
}

.right {
    left: 50%;
}

.right::after {
    left: -16px;
}

.timeline-content {
    padding: 20px 30px;
    background-color: white;
    position: relative;
    border-radius: 6px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
}

.timeline-year {
    font-weight: bold;
    color: #2989d8;
    margin-bottom: 5px;
}

/* Responsive design */
@media screen and (max-width: 768px) {
    .nav-list {
        flex-direction: column;
    }
    
    .hero {
        height: 300px;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .about-content {
        flex-direction: column;
    }
    
    .about-image {
        order: -1;
    }
    
    .timeline::after {
        left: 31px;
    }
    
    .timeline-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
    }
    
    .timeline-item::after {
        left: 15px;
    }
    
    .left::after, .right::after {
        left: 15px;
    }
    
    .right {
        left: 0;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .product-images {
        flex-direction: column;
        height: 400px;
    }
}