/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

section {
    padding: 80px 0;
}

.section-bg {
    background-color: #f8f9fa;
}

.section-title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
    position: relative;
    color: #1a5276;
}

.section-title:after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: #3498db;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 16px;
}

.btn.primary {
    background-color: #3498db;
    color: white;
}

.btn.primary:hover {
    background-color: #2980b9;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(52, 152, 219, 0.2);
}

.btn.secondary {
    background-color: transparent;
    color: #3498db;
    border: 2px solid #3498db;
}

.btn.secondary:hover {
    background-color: #3498db;
    color: white;
}

/* 导航栏样式 */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 40px;
    margin-right: 10px;
}

.logo span {
    font-size: 22px;
    font-weight: bold;
    color: #1a5276;
}

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

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    position: relative;
    transition: color 0.3s ease;
}

nav ul li a:hover {
    color: #3498db;
}

nav ul li a:after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: #3498db;
    transition: width 0.3s ease;
}

nav ul li a:hover:after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* 主页横幅样式 */
.hero {
    height: 100vh;
    position: relative;
    color: white;
    padding-top: 80px;
    overflow: hidden;
}

.slider-container {
    position: relative;
    width: 100%;
    height: 100%;
}

.slides {
    position: relative;
    width: 100%;
    height: 100%;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1.5s ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slide.active {
    opacity: 1;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    padding: 0 20px;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    animation: fadeInUp 1s ease;
}

.hero p {
    font-size: 20px;
    margin-bottom: 30px;
    animation: fadeInUp 1s ease 0.2s;
    animation-fill-mode: both;
}

.cta-buttons {
    animation: fadeInUp 1s ease 0.4s;
    animation-fill-mode: both;
}

.cta-buttons .btn {
    margin: 0 10px;
}

/* 轮播指示器 */
.slider-indicators {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.indicator.active {
    background-color: white;
}

/* 轮播控制按钮 */
.slider-control {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 18px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slider-control:hover {
    background: rgba(255, 255, 255, 0.3);
}

.slider-control.prev {
    left: 20px;
}

.slider-control.next {
    right: 20px;
}

/* 关于我们部分 */
.about-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.about-text {
    flex: 1;
}

.about-text p {
    margin-bottom: 20px;
    font-size: 16px;
    line-height: 1.8;
}

.about-image {
    flex: 1;
}

.about-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* 产品中心部分 */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
    gap: 30px;
}

.product-card {
    background-color: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.product-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.product-card h3 {
    padding: 15px 20px 10px;
    font-size: 20px;
    color: #1a5276;
}

.product-card p {
    padding: 0 20px 15px;
    color: #666;
}

.product-card .btn {
    margin: 0 20px 20px;
    width: calc(100% - 40px);
}

/* 产品应用领域样式 */
.product-applications {
    padding: 0 20px 15px;
}

.product-applications h4 {
    font-size: 16px;
    color: #1a5276;
    margin-bottom: 10px;
    font-weight: 600;
}

.product-applications ul {
    list-style-type: none;
    padding-left: 0;
}

.product-applications li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 6px;
    font-size: 14px;
    color: #555;
}

.product-applications li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: #3498db;
    font-weight: bold;
}

/* 产品特性标签样式 */
.product-features {
    padding: 0 20px 15px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.feature-tag {
    background-color: #e8f4f8;
    color: #1a5276;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 13px;
    display: inline-block;
    white-space: normal;
    max-width: 100%;
    margin-bottom: 8px;
    line-height: 1.4;
}

/* 应用领域部分 */
.applications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.application-item {
    text-align: center;
    padding: 30px 20px;
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.application-item:hover {
    transform: translateY(-10px);
}

.application-item i {
    font-size: 48px;
    color: #3498db;
    margin-bottom: 20px;
}

.application-item h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #1a5276;
}

.application-item p {
    color: #666;
}

/* 清洗服务部分 */
.services-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.service-image {
    flex: 1;
}

.service-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.service-text {
    flex: 1;
}

.service-text h3 {
    font-size: 28px;
    color: #1a5276;
    margin-bottom: 20px;
}

.service-text p {
    margin-bottom: 20px;
    font-size: 16px;
    line-height: 1.8;
}

.service-text ul {
    list-style-type: none;
    margin-bottom: 30px;
}

.service-text ul li {
    margin-bottom: 10px;
    padding-left: 25px;
    position: relative;
}

.service-text ul li:before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #3498db;
    font-weight: bold;
}

/* 联系我们部分 */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.contact-item i {
    font-size: 24px;
    color: #3498db;
    margin-top: 5px;
}

.contact-item h3 {
    font-size: 18px;
    margin-bottom: 5px;
    color: #1a5276;
}

.contact-form {
    background-color: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.contact-form h3 {
    font-size: 24px;
    color: #1a5276;
    margin-bottom: 20px;
    text-align: center;
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: inherit;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #3498db;
}

.contact-form .btn {
    width: 100%;
}

/* 页脚样式 */
footer {
    background-color: #1a5276;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo img {
    height: 40px;
    margin-bottom: 15px;
}

.footer-logo p {
    color: rgba(255, 255, 255, 0.7);
}

.footer-links h3,
.footer-contact h3 {
    font-size: 18px;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-links h3:after,
.footer-contact h3:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background-color: #3498db;
}

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

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

.footer-links ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-contact p {
    margin-bottom: 10px;
    color: rgba(255, 255, 255, 0.7);
}

.footer-contact p i {
    margin-right: 10px;
    color: #3498db;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    border-radius: 50%;
    transition: background-color 0.3s ease;
}

.social-links a:hover {
    background-color: #3498db;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
}

/* 动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 页面标题样式 */
.page-header {
    background: linear-gradient(rgba(26, 82, 118, 0.9), rgba(26, 82, 118, 0.9)), url('../images/page-header.jpg') no-repeat center center/cover;
    padding: 120px 0 60px;
    color: white;
    text-align: center;
}

.page-header h1 {
    font-size: 42px;
    margin-bottom: 20px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    margin: 0 10px;
    transition: color 0.3s ease;
}

.breadcrumb a:hover {
    color: white;
}

.breadcrumb i {
    font-size: 12px;
    margin: 0 5px;
}

/* 分类按钮样式 */
.product-categories,
.news-categories,
.application-categories {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
    gap: 15px;
}

.category-btn {
    padding: 10px 25px;
    background-color: #f1f1f1;
    border: none;
    border-radius: 30px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.category-btn:hover,
.category-btn.active {
    background-color: #3498db;
    color: white;
}

/* 产品卡片样式 */
.products-grid .product-card {
    display: flex;
    flex-direction: column;
    background-color: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    margin-bottom: 30px;
}

.products-grid .product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.product-image {
    height: 200px;
    overflow: hidden;
}

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

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

.product-info {
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.product-info h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #1a5276;
}

.product-specs {
    margin-bottom: 15px;
}

.spec-item {
    display: flex;
    margin-bottom: 8px;
    font-size: 14px;
}

.spec-label {
    font-weight: 500;
    width: 100px;
    color: #666;
}

.spec-value {
    color: #333;
}

.product-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.feature-tag {
    display: inline-block;
    padding: 5px 10px;
    background-color: #f1f1f1;
    border-radius: 15px;
    font-size: 12px;
    color: #666;
}

.product-info .btn {
    margin-top: auto;
    width: 100%;
}

/* 新闻卡片样式 */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.news-card {
    background-color: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.news-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.news-image {
    height: 200px;
    overflow: hidden;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.news-content {
    padding: 20px;
}

.news-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 15px;
    font-size: 14px;
}

.news-date {
    color: #666;
}

.news-category {
    background-color: #3498db;
    color: white;
    padding: 3px 10px;
    border-radius: 15px;
    font-size: 12px;
}

.news-content h3 {
    margin-bottom: 15px;
}

.news-content h3 a {
    color: #333;
    text-decoration: none;
    transition: color 0.3s ease;
}

.news-content h3 a:hover {
    color: #3498db;
}

.news-content p {
    margin-bottom: 15px;
    color: #666;
}

.read-more {
    color: #3498db;
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    transition: color 0.3s ease;
}

.read-more:hover {
    color: #2980b9;
}

.read-more i {
    margin-left: 5px;
    transition: transform 0.3s ease;
}

.read-more:hover i {
    transform: translateX(5px);
}

/* 案例卡片样式 */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(500px, 1fr));
    gap: 30px;
    justify-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.case-card {
    background-color: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.case-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.case-image {
    height: 220px;
    overflow: hidden;
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.case-content {
    padding: 20px;
    text-align: center;
}

.case-category {
    display: inline-block;
    background-color: #3498db;
    color: white;
    padding: 3px 10px;
    border-radius: 15px;
    font-size: 12px;
    margin-bottom: 15px;
}

.case-content h3 {
    margin-bottom: 15px;
}

.case-content h3 a {
    color: #333;
    text-decoration: none;
    transition: color 0.3s ease;
}

.case-content h3 a:hover {
    color: #3498db;
}

.case-content p {
    margin-bottom: 15px;
    color: #666;
}

/* 特色案例样式 */
.featured-case {
    grid-column: span 2;
    justify-self: center;
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.featured-case:hover .video-overlay {
    opacity: 1;
}

.video-play-btn {
    width: 60px;
    height: 60px;
    background-color: rgba(52, 152, 219, 0.8);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.video-play-btn:hover {
    background-color: rgba(52, 152, 219, 1);
    transform: scale(1.1);
}

.location-tag {
    display: inline-block;
    background-color: #e74c3c;
    color: white;
    padding: 3px 10px;
    border-radius: 15px;
    font-size: 12px;
    margin-left: 10px;
}

.case-gallery {
    margin: 15px 0;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 10px;
    border-radius: 8px;
}

.case-gallery a {
    display: block;
    overflow: hidden;
    border-radius: 8px;
    aspect-ratio: 16 / 9;
}

.case-gallery img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.case-gallery a:hover img {
    transform: scale(1.05);
}

/* 视频容器样式 */
.video-container {
    margin-top: 20px;
}

.video-container h4 {
    font-size: 18px;
    margin-bottom: 15px;
    color: #1a5276;
}

.video-wrapper {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 56.25%; /* 16:9 比例 */
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.video-wrapper video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    background-color: #000;
}

/* 联系页面样式 */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info h2,
.contact-form h2 {
    font-size: 28px;
    margin-bottom: 30px;
    color: #1a5276;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 30px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background-color: #3498db;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
    flex-shrink: 0;
}

.contact-icon i {
    font-size: 20px;
}

.contact-details h3 {
    font-size: 18px;
    margin-bottom: 5px;
    color: #1a5276;
}

.contact-details p {
    color: #666;
}

.contact-form {
    background-color: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #333;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: inherit;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #3498db;
}

/* 地图样式 */
.map-container {
    height: 500px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.map-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 10px;
}

.map-placeholder {
    width: 100%;
    height: 100%;
    background-color: #f1f1f1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #666;
}

.map-placeholder i {
    font-size: 48px;
    margin-bottom: 15px;
    color: #3498db;
}

/* 分页样式 */
.pagination {
    display: flex;
    justify-content: center;
    margin-top: 40px;
}

.page-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    margin: 0 5px;
    background-color: #f1f1f1;
    color: #666;
    text-decoration: none;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.page-link:hover,
.page-link.active {
    background-color: #3498db;
    color: white;
}

/* 技术内容样式 */
.technology-content {
    display: flex;
    gap: 50px;
    align-items: center;
}

.technology-image {
    flex: 1;
}

.technology-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.technology-text {
    flex: 1;
}

.technology-text h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #1a5276;
}

.technology-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.feature {
    text-align: center;
    padding: 20px;
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.feature i {
    font-size: 36px;
    color: #3498db;
    margin-bottom: 15px;
}

.feature h4 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #1a5276;
}

/* 公司优势样式 */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.advantage-item {
    text-align: center;
    padding: 30px 20px;
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.advantage-item:hover {
    transform: translateY(-10px);
}

.advantage-icon {
    width: 80px;
    height: 80px;
    background-color: #3498db;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.advantage-icon i {
    font-size: 36px;
}

.advantage-item h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #1a5276;
}

/* 企业文化样式 */
.culture-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.culture-item {
    background-color: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    text-align: center;
}

.culture-item h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: #1a5276;
    display: flex;
    align-items: center;
    justify-content: center;
}

.culture-item h3 i {
    margin-right: 10px;
    color: #3498db;
}

.text-center {
    text-align: center;
    margin-top: 30px;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .about-content,
    .services-content,
    .technology-content {
        flex-direction: column;
    }

    .about-image,
    .service-image,
    .technology-image {
        order: -1;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    nav ul {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: white;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        transform: translateY(-100%);
        transition: transform 0.3s ease;
        opacity: 0;
        pointer-events: none;
    }

    nav ul.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    nav ul li {
        margin: 10px 0;
    }

    .hero h1 {
        font-size: 36px;
    }

    .hero p {
        font-size: 18px;
    }

    .section-title {
        font-size: 28px;
    }

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

@media (max-width: 576px) {
    .hero {
        padding: 100px 0 50px;
        height: auto;
    }

    .cta-buttons {
        flex-direction: column;
        gap: 15px;
    }

    .cta-buttons .btn {
        margin: 0;
        width: 100%;
    }

    .products-grid {
        grid-template-columns: 1fr;
    }

    .applications-grid {
        grid-template-columns: 1fr;
    }

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

    .footer-links h3:after,
    .footer-contact h3:after {
        left: 50%;
        transform: translateX(-50%);
    }

    .social-links {
        justify-content: center;
    }
}