/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
}

body {
    line-height: 1.6;
    color: #333;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    box-sizing: border-box;
}

/* 导航栏 */
.navbar {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo h2 {
    color: #2c3e50;
    font-size: 24px;
    margin-bottom: 2px;
}

.nav-logo span {
    color: #7f8c8d;
    font-size: 12px;
}

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

.nav-menu li {
    margin: 0 20px;
}

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: #3498db;
}

/* 语言切换按钮 */
.lang-btn {
    background: #f8f9fa;
    color: #333;
    border: 1px solid #ddd;
    padding: 8px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    margin-left: 15px;
    transition: all 0.3s ease;
    min-width: 40px;
    text-align: center;
}

.lang-btn:hover {
    background: #e9ecef;
    border-color: #adb5bd;
    transform: translateY(-1px);
}

.lang-btn:active {
    transform: translateY(0);
}

.lang-dropdown {
  position: relative;
  display: inline-block;
}
.lang-menu {
  position: absolute;
  right: 0;
  top: 100%;
  background: #fff;
  border: 1px solid #ddd;
  min-width: 100px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  z-index: 999;
  border-radius: 4px;
  display: none;
}
.lang-option {
  padding: 8px 16px;
  cursor: pointer;
  font-size: 15px;
}
.lang-option:hover {
  background: #f0f0f0;
}

/* 主要内容 */
main {
    margin-top: 70px;
}

/* 轮播区域 */
.hero-slider {
    position: relative;
    height: 600px;
    overflow: hidden;
    background: linear-gradient(135deg, #1e3c72, #2a5298);
}

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

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.8s ease-in-out;
    display: none;
}

.slide.active {
    opacity: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slide img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    filter: brightness(0.7);
    transition: filter 0.3s ease;
}

.slide:hover img {
    filter: brightness(0.8);
}

.slide-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: white;
    max-width: 800px;
    padding: 0 20px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 15px;
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.slide-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.8);
}

.slide-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    line-height: 1.6;
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.8);
}

.slide-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.slide-buttons .btn {
    padding: 12px 30px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 25px;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.slide-buttons .btn-primary {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    border-color: #3498db;
}

.slide-buttons .btn-primary:hover {
    background: linear-gradient(135deg, #2980b9, #1f5f8b);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(52, 152, 219, 0.4);
}

.slide-buttons .btn-outline {
    background: transparent;
    color: white;
    border-color: white;
}

.slide-buttons .btn-outline:hover {
    background: white;
    color: #2c3e50;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(255, 255, 255, 0.3);
}

/* 轮播图控制按钮 */
.slider-controls {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 3;
}

.prev-btn, .next-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    font-size: 1.5rem;
    padding: 15px 20px;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.prev-btn:hover, .next-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

/* 轮播图指示器 */
.slider-dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 3;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.dot.active, .dot:hover {
    background: white;
    transform: scale(1.2);
}

/* 公司简介 */
.company-intro {
    padding: 80px 0;
    background: #f8f9fa;
}

.intro-content {
    display: flex;
    align-items: center;
    gap: 60px;
}

.intro-text h2 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 1.5rem;
}

.intro-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #555;
    margin-bottom: 1.5rem;
}

.intro-features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin: 2rem 0;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.feature-item i {
    color: #27ae60;
    font-size: 1.2rem;
}

.feature-item span {
    font-size: 1.1rem;
    color: #333;
}

.intro-actions {
    margin-top: 2rem;
}

.intro-actions .btn {
    display: inline-block;
    padding: 15px 30px;
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    text-decoration: none;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.intro-actions .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(52, 152, 219, 0.4);
}

/* 数据统计 */
.statistics {
    padding: 60px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    text-align: center;
}

.stat-item {
    padding: 20px;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: #f39c12;
}

.stat-label {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* 产品分类 */
.categories {
    padding: 80px 0;
    background: white;
}

.categories h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 3rem;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.category-card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.category-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.category-icon {
    font-size: 3rem;
    color: #3498db;
    margin-bottom: 1.5rem;
}

.category-card h3 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 1rem;
}

.category-card p {
    color: #666;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.category-image {
    margin: 2rem 0;
    border-radius: 10px;
    overflow: hidden;
}

.category-image img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.category-link {
    display: inline-block;
    padding: 12px 25px;
    background: #3498db;
    color: white;
    text-decoration: none;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.category-link:hover {
    background: #2980b9;
    transform: translateY(-2px);
}

/* 公司优势 */
.advantages {
    padding: 80px 0;
    background: #f8f9fa;
}

.advantages h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 3rem;
}

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

.advantage-item {
    text-align: center;
    padding: 30px 20px;
}

.advantage-item i {
    font-size: 3rem;
    color: #3498db;
    margin-bottom: 1.5rem;
}

.advantage-item h3 {
    font-size: 1.3rem;
    color: #2c3e50;
    margin-bottom: 1rem;
}

.advantage-item p {
    color: #666;
    line-height: 1.6;
}

/* 页脚 */
.footer {
    background: #2c3e50;
    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-section h3 {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    color: #3498db;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section a:hover {
    color: #3498db;
}

.footer-section p {
    color: #bdc3c7;
    margin-bottom: 0.5rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #34495e;
    color: #95a5a6;
}

/* 页面头部 */
.page-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 100px 0 60px;
    text-align: center;
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* 产品介绍 */
.product-intro {
    padding: 80px 0;
    background: white;
}

.product-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.product-text h2 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 1.5rem;
}

.product-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #555;
    margin-bottom: 2rem;
}

.product-features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin: 2rem 0;
}

.product-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

/* 产品规格 */
.product-specs-section {
    padding: 80px 0;
    background: #f8f9fa;
}

.product-specs-section h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 3rem;
}

.specs-table {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.specs-table table {
    width: 100%;
    border-collapse: collapse;
}

.specs-table th {
    background: #3498db;
    color: white;
    padding: 15px;
    text-align: left;
    font-weight: 600;
}

.specs-table td {
    padding: 15px;
    border-bottom: 1px solid #e9ecef;
}

.specs-table tr:hover {
    background: #f8f9fa;
}

/* 产品分类图片样式 */
.product-category-image {
    margin-top: 40px;
    text-align: center;
}

.product-category-image .category-img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product-category-image .category-img:hover {
    transform: scale(1.02);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

/* 应用领域 */
.application-areas {
    padding: 80px 0;
    background: white;
}

.application-areas h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 3rem;
}

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

.application-item {
    text-align: center;
    padding: 30px 20px;
    background: #f8f9fa;
    border-radius: 15px;
    transition: all 0.3s ease;
}

.application-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.application-item i {
    font-size: 3rem;
    color: #3498db;
    margin-bottom: 1.5rem;
}

.application-item h3 {
    font-size: 1.3rem;
    color: #2c3e50;
    margin-bottom: 1rem;
}

.application-item p {
    color: #666;
    line-height: 1.6;
}

/* 联系我们 */
.contact-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.contact-section h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact-section p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.contact-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.contact-buttons .btn {
    padding: 15px 30px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

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

.btn-outline {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
    background: white;
    color: #3498db;
    transform: translateY(-2px);
}

/* 修复和优化样式 */
.btn {
    display: inline-block;
    padding: 12px 25px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

/* 确保图片正确显示 */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* 修复链接样式 */
a {
    color: inherit;
    text-decoration: none;
}

a:hover {
    text-decoration: none;
}

/* 确保表格正确显示 */
table {
    border-collapse: collapse;
    width: 100%;
}

th, td {
    border: 1px solid #ddd;
    padding: 12px;
    text-align: left;
}

th {
    background-color: #f2f2f2;
    font-weight: 600;
}

/* 修复表单元素 */
input, button, textarea, select {
    font-family: inherit;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .nav-container {
        padding: 0 15px;
    }
    
    .nav-logo h2 {
        font-size: 20px;
    }
    
    .hero-slider {
        height: 400px;
    }
    
    .slide-content h2 {
        font-size: 1.5rem;
    }
    
    .slide-content p {
        font-size: 0.9rem;
    }
    
    .slide-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .slide-buttons .btn {
        width: 200px;
        text-align: center;
    }
    
    .intro-content {
        flex-direction: column;
        text-align: center;
    }
    
    .product-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .category-grid {
        grid-template-columns: 1fr;
    }
    
    .advantage-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .application-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .contact-buttons .btn {
        width: 200px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-slider {
        height: 350px;
    }
    
    .slide-content h2 {
        font-size: 1.3rem;
    }
    
    .slide-content p {
        font-size: 0.8rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .page-header p {
        font-size: 1rem;
    }
}

/* 关于我们页面专用样式 */
.about-intro {
    padding: 80px 0;
    background: white;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-text h2 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 2rem;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #555;
    margin-bottom: 1.5rem;
}

.about-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.about-image img:hover {
    transform: scale(1.02);
}

.core-advantages {
    padding: 80px 0;
    background: #f8f9fa;
}

.core-advantages h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 3rem;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
}

.advantage-card {
    background: white;
    border-radius: 15px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.advantage-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.advantage-icon {
    margin-bottom: 2rem;
}

.advantage-icon i {
    font-size: 3.5rem;
    color: #3498db;
}

.advantage-card h3 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 1rem;
}

.advantage-card p {
    color: #666;
    line-height: 1.6;
}

/* 联系我们页面专用样式 */
.contact-info {
    padding: 80px 0;
    background: white;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.contact-card {
    background: white;
    border-radius: 15px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.contact-icon {
    margin-bottom: 1.5rem;
}

.contact-icon i {
    font-size: 3rem;
    color: #3498db;
}

.contact-card h3 {
    font-size: 1.3rem;
    color: #2c3e50;
    margin-bottom: 1rem;
}

.contact-card p {
    color: #666;
    font-size: 1.1rem;
}

.contact-main {
    padding: 80px 0;
    background: #f8f9fa;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
}

.contact-map-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.map-container {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.map-container h3 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 2rem;
}

.map-placeholder {
    position: relative;
    border-radius: 10px;
    overflow: hidden;
}

.map-placeholder img {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

.map-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 20px;
    text-align: center;
}

.map-overlay i {
    font-size: 2rem;
    color: #3498db;
    margin-bottom: 10px;
}

.additional-info {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.additional-info h3 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 2rem;
}

.transport-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.transport-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 10px;
}

.transport-item i {
    font-size: 1.5rem;
    color: #3498db;
}

.transport-item h4 {
    font-size: 1.1rem;
    color: #2c3e50;
    margin-bottom: 5px;
}

.transport-item p {
    color: #666;
    font-size: 0.9rem;
}

.service-info {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin-top: 30px;
}

.service-info h3 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 2rem;
}

.service-info ul {
    list-style: none;
}

.service-info li {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
    padding: 10px;
    background: #f8f9fa;
    border-radius: 8px;
}

.service-info i {
    color: #27ae60;
    font-size: 1.2rem;
}

/* FAQ样式 - 静态显示 */
.faq-section {
    padding: 80px 0;
    background: white;
}

.faq-section h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 3rem;
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    border-radius: 10px;
    margin-bottom: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    border: 1px solid #e9ecef;
}

.faq-question {
    padding: 25px 30px 15px 30px;
    background: #f8f9fa;
    border-bottom: 1px solid #e9ecef;
}

.faq-question h3 {
    font-size: 1.3rem;
    color: #2c3e50;
    margin: 0;
    font-weight: 600;
    line-height: 1.4;
}

.faq-answer {
    padding: 20px 30px 25px 30px;
    background: white;
}

.faq-answer p {
    color: #666;
    line-height: 1.8;
    margin: 0;
    font-size: 1rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .faq-section h2 {
        font-size: 2rem;
    }
    
    .faq-question h3 {
        font-size: 1.1rem;
    }
    
    .faq-question,
    .faq-answer {
        padding: 20px;
    }
}

/* 案例展示样式 */
.case-studies {
    padding: 80px 0;
    background: #f8f9fa;
}

.case-studies h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 3rem;
    font-weight: 700;
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.case-item {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.case-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.case-image {
    height: 250px;
    overflow: hidden;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

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

.case-content {
    padding: 1.5rem;
}

.case-content h3 {
    font-size: 1.3rem;
    color: #2c3e50;
    margin-bottom: 1rem;
    font-weight: 600;
}

.case-content p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 0;
}

/* 只有图片的案例展示样式 */
.case-studies .case-item:only-child .case-image,
.case-studies .case-item:not(:has(.case-content)) .case-image {
    height: 300px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .case-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .case-studies h2 {
        font-size: 2rem;
    }
    
    .case-image {
        height: 200px;
    }
    
    .case-studies .case-item:only-child .case-image,
    .case-studies .case-item:not(:has(.case-content)) .case-image {
        height: 250px;
    }
    
    .case-content {
        padding: 1rem;
    }
}

@media (max-width: 480px) {
    .case-grid {
        grid-template-columns: 1fr;
    }
    
    .case-image {
        height: 180px;
    }
    
    .case-studies .case-item:only-child .case-image,
    .case-studies .case-item:not(:has(.case-content)) .case-image {
        height: 220px;
    }
}

/* 视频播放区域样式 */
.company-video {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.company-video h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 1rem;
    font-weight: 700;
}

.company-video p[data-i18n="company_video_subtitle"] {
    text-align: center;
    font-size: 1.1rem;
    color: #7f8c8d;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.video-container {
    position: relative;
    max-width: 800px;
    margin: 0 auto 3rem;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    background: #000;
}

.video-container video {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 15px;
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
    transition: opacity 0.3s ease;
    border-radius: 15px;
}

.video-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.play-button {
    width: 80px;
    height: 80px;
    background: rgba(52, 152, 219, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 3px solid rgba(255, 255, 255, 0.8);
}

.play-button:hover {
    background: rgba(52, 152, 219, 1);
    transform: scale(1.1);
    box-shadow: 0 10px 25px rgba(52, 152, 219, 0.4);
}

.play-button i {
    color: white;
    font-size: 2rem;
    margin-left: 5px;
}

.video-description {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.video-description h3 {
    color: #2c3e50;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.video-description p {
    color: #7f8c8d;
    line-height: 1.8;
    font-size: 1rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .company-video {
        padding: 60px 0;
    }
    
    .company-video h2 {
        font-size: 2rem;
    }
    
    .company-video p[data-i18n="company_video_subtitle"] {
        font-size: 1rem;
        margin-bottom: 2rem;
    }
    
    .video-container {
        margin-bottom: 2rem;
    }
    
    .play-button {
        width: 60px;
        height: 60px;
    }
    
    .play-button i {
        font-size: 1.5rem;
    }
    
    .video-description {
        padding: 1.5rem;
    }
    
    .video-description h3 {
        font-size: 1.3rem;
    }
}

@media (max-width: 480px) {
    .company-video h2 {
        font-size: 1.8rem;
    }
    
    .play-button {
        width: 50px;
        height: 50px;
    }
    
    .play-button i {
        font-size: 1.2rem;
    }
    
    .video-description {
        padding: 1rem;
    }
}

/* 关于我们页面新的响应式布局 */
@media (max-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .company-video-sidebar {
        position: static !important;
        order: -1;
    }
    
    .about-text {
        order: 1;
    }
}

@media (max-width: 768px) {
    .about-content {
        gap: 20px;
    }
    
    .about-text h2 {
        font-size: 2rem;
    }
    
    .company-video-sidebar h2 {
        font-size: 1.6rem !important;
    }
    
    .video-container {
        margin-bottom: 15px;
    }
    
    .video-description {
        padding: 15px !important;
    }
}

@media (max-width: 480px) {
    .about-content {
        gap: 15px;
    }
    
    .about-text h2 {
        font-size: 1.8rem;
    }
    
    .company-video-sidebar h2 {
        font-size: 1.4rem !important;
    }
    
    .video-description h3 {
        font-size: 1.1rem !important;
    }
} 

/* 产品图片展示区域 */
.product-gallery {
    padding: 80px 0;
    background: #f8f9fa;
}

.product-gallery .container {
    text-align: center;
}

.gallery-item {
    margin: 0 auto;
    max-width: 800px;
}

.gallery-item img {
    width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.gallery-item img:hover {
    transform: scale(1.02);
}

/* 临时隐藏所有空的悬浮层，彻底排查透明框 */
div:empty, section:empty {
    display: none !important;
}

/* 隐藏所有无内容的固定/绝对定位层 */
div:empty[position], section:empty[position] {
    display: none !important;
}

/* 隐藏所有宽高小于50px的固定/绝对定位层 */
div[position][style*="position: fixed"], div[position][style*="position: absolute"] {
    min-width: 50px;
    min-height: 50px;
    display: none !important;
} 

/* 产品分类九宫格样式 */
.product-category-grid {
    margin: 40px 0 0 0;
    padding: 0 10px;
}
.category-grid-title {
    text-align: center;
    font-size: 1.6rem;
    color: #2c3e50;
    margin-bottom: 24px;
    letter-spacing: 2px;
}
.category-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    justify-items: center;
}
.category-item {
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    padding: 12px;
    transition: box-shadow 0.3s, transform 0.3s;
    width: 100%;
    max-width: 320px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    position: relative;
    min-height: 180px;
}
.category-title {
    position: static;
    text-align: left;
    font-size: 1.1rem;
    color: #3498db;
    font-weight: 600;
    margin-bottom: 4px;
    letter-spacing: 1px;
    background: none;
    padding: 0;
    border-radius: 0;
    z-index: 2;
}
.category-item-content {
    display: flex;
    flex-direction: row;
    align-items: center;
    width: 100%;
}
.category-item img {
    max-width: 110px;
    min-width: 80px;
    width: 110px;
    height: 110px;
    object-fit: contain;
    border-radius: 8px;
    transition: transform 0.3s, box-shadow 0.3s;
    background: #f8f9fa;
    margin-right: 12px;
    margin-left: 0;
    margin-top: 0;
    margin-bottom: 0;
    box-shadow: 0 2px 8px rgba(52,152,219,0.06);
}
.category-desc {
    text-align: left;
    font-size: 0.98rem;
    color: #666;
    margin: 0 0 0 0;
    line-height: 1.6;
    flex: 1;
    display: flex;
    align-items: center;
    min-height: 80px;
}
@media (max-width: 900px) {
    .category-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .category-item {
        flex-direction: column;
        align-items: center;
        min-height: unset;
    }
    .category-title {
        text-align: center;
        margin-bottom: 6px;
    }
    .category-item-content {
        flex-direction: column;
        align-items: center;
    }
    .category-item img {
        margin: 0 0 10px 0;
        width: 90px;
        height: 90px;
    }
    .category-desc {
        text-align: center;
        margin: 0 0 10px 0;
        min-height: unset;
        display: block;
    }
}
@media (max-width: 600px) {
    .category-grid {
        grid-template-columns: 1fr;
    }
    .category-item img {
        width: 70px;
        height: 70px;
    }
}

/* 出口装集装箱实拍展示区域 */
.export-shipping {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.export-shipping h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 1rem;
}

.export-shipping .section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: #6c757d;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.shipping-gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.shipping-item {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.shipping-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.shipping-image {
    position: relative;
    height: 250px;
    overflow: hidden;
}

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

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

.shipping-caption {
    padding: 20px;
}

.shipping-caption h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 10px;
}

.shipping-caption p {
    color: #6c757d;
    font-size: 0.95rem;
    line-height: 1.5;
}

.shipping-features {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.shipping-features .feature {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 15px 25px;
    background: white;
    border-radius: 25px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.shipping-features .feature:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
}

.shipping-features .feature i {
    font-size: 1.2rem;
    color: #3498db;
}

.shipping-features .feature span {
    font-weight: 500;
    color: #2c3e50;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .export-shipping {
        padding: 60px 0;
    }
    
    .export-shipping h2 {
        font-size: 2rem;
    }
    
    .shipping-gallery {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .shipping-features {
        gap: 20px;
    }
    
    .shipping-features .feature {
        padding: 12px 20px;
    }
}

@media (max-width: 480px) {
    .export-shipping h2 {
        font-size: 1.8rem;
    }
    
    .shipping-gallery {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .shipping-image {
        height: 200px;
    }
    
    .shipping-features {
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }
    
    .shipping-features .feature {
        width: 100%;
        max-width: 250px;
        justify-content: center;
    }
}

/* 生产视频展示区域 */
.production-video-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.production-video-section h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 1rem;
}

.production-video-section .section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: #6c757d;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.video-container {
    max-width: 800px;
    margin: 0 auto 3rem;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    background: #000;
}

.video-container video {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 15px;
}

.video-features {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.video-features .feature {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 1.5rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    min-width: 150px;
}

.video-features .feature:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.video-features .feature i {
    font-size: 2rem;
    color: #3498db;
    margin-bottom: 1rem;
}

.video-features .feature span {
    font-weight: 600;
    color: #2c3e50;
    font-size: 1rem;
}

/* 生产图片展示 */
.production-item {
    position: relative;
    overflow: hidden;
}

.production-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: white;
    padding: 1rem;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.production-item:hover .production-overlay {
    transform: translateY(0);
}

.production-overlay span {
    font-weight: 600;
    font-size: 1rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .production-video-section {
        padding: 60px 0;
    }
    
    .production-video-section h2 {
        font-size: 2rem;
    }
    
    .video-features {
        gap: 2rem;
    }
    
    .video-features .feature {
        min-width: 120px;
        padding: 1rem;
    }
}

@media (max-width: 480px) {
    .production-video-section h2 {
        font-size: 1.8rem;
    }
    
    .video-features {
        gap: 1rem;
    }
    
    .video-features .feature {
        min-width: 100px;
        padding: 0.8rem;
    }
    
    .video-features .feature i {
        font-size: 1.5rem;
    }
    
    .video-features .feature span {
        font-size: 0.9rem;
    }
}