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

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

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

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

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

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

.logo a {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: #333;
}

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

.logo h1 {
    font-size: 24px;
    font-weight: 700;
    color: #0066cc;
}

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

.nav-links li {
    margin-left: 30px;
    position: relative;
}

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

.nav-links a:hover,
.nav-links a.active {
    color: #0066cc;
}

/* 下拉菜单 */
.dropdown {
    position: relative;
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: #fff;
    min-width: 200px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    z-index: 1;
    top: 100%;
    left: 0;
    margin-top: 5px;
    border-radius: 4px;
    overflow: hidden;
}

.dropdown-content a {
    display: block;
    padding: 12px 16px;
    text-decoration: none;
    color: #333;
    transition: background-color 0.3s ease;
}

.dropdown-content a:hover {
    background-color: #f5f5f5;
    color: #0066cc;
}

.dropdown:hover .dropdown-content {
    display: block;
}

/* 语言切换 */
.lang-switch {
    display: flex;
    align-items: center;
}

.lang-btn {
    padding: 5px 10px;
    margin-left: 10px;
    text-decoration: none;
    color: #333;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.lang-btn:hover,
.lang-btn.active {
    background-color: #0066cc;
    color: #fff;
}

/* Banner */
.banner {
    background-size: cover;
    margin-top: 70px;
    position: relative;
    width: 100%;
    padding-top: 31.25%; /* 16:5 aspect ratio */
}

.banner .container {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.banner-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100%;
    text-align: center;
    color: #fff;
}

.banner-content h1 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.banner-content p {
    font-size: 24px;
    margin-bottom: 30px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    max-width: 800px;
}

/* 按钮样式 */
.btn-primary {
    display: inline-block;
    background-color: #fff;
    color: #0066cc;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background-color: #f0f0f0;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn-secondary {
    display: inline-block;
    background-color: transparent;
    color: #0066cc;
    padding: 10px 25px;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid #0066cc;
}

.btn-secondary:hover {
    background-color: #0066cc;
    color: #fff;
}

/* 通用 section 样式 */
section {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 36px;
    font-weight: 700;
    color: #333;
    margin-bottom: 10px;
}

.section-title p {
    font-size: 18px;
    color: #666;
}

/* 公司简介 */
.company-intro {
    background-color: #fff;
}

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

.intro-text {
    flex: 1;
}

.intro-text p {
    font-size: 16px;
    line-height: 1.8;
    color: #666;
    margin-bottom: 20px;
}

.intro-image {
    flex: 1;
}

.intro-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* 核心产品 */
.core-products {
    background-color: #f9f9f9;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.product-card {
    background-color: #fff;
    padding: 40px 30px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.product-icon {
    width: 80px;
    height: 80px;
    background-color: #e6f0fa;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 32px;
    color: #0066cc;
}

.product-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: #333;
    margin-bottom: 15px;
}

.product-card p {
    font-size: 14px;
    line-height: 1.6;
    color: #666;
    margin-bottom: 25px;
}

/* 职能智能化 */
.intelligent-solutions {
    background-color: #fff;
}

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

.solution-card {
    background-color: #f9f9f9;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.solution-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

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

.solution-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: #333;
    margin: 20px 20px 10px;
}

.solution-card p {
    font-size: 14px;
    line-height: 1.6;
    color: #666;
    margin: 0 20px 20px;
}

.solution-card .btn-secondary {
    margin: 0 20px 20px;
}

/* 数字创新生态 */
.ecosystem {
    background-color: #f9f9f9;
}

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

.ecosystem-image {
    flex: 1;
}

.ecosystem-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.ecosystem-text {
    flex: 1;
}

.ecosystem-text p {
    font-size: 16px;
    line-height: 1.8;
    color: #666;
    margin-bottom: 20px;
}

/* 核心功能 */
.core-features {
    background-color: #f9f9f9;
}

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

.feature-card {
    background-color: #fff;
    padding: 40px 30px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background-color: #e6f0fa;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 32px;
    color: #0066cc;
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: #333;
    margin-bottom: 15px;
}

.feature-card p {
    font-size: 14px;
    line-height: 1.6;
    color: #666;
}

/* 应用场景 */
.application-scenarios {
    background-color: #f9f9f9;
    padding: 100px 0;
}

.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.scenario-card,
.scenario-item {
    background-color: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.scenario-card {
    padding: 45px 30px;
    align-items: flex-start;
    text-align: left;
    border-left: 4px solid #0066cc;
}

.scenario-item {
    align-items: flex-start;
    text-align: left;
}

.scenario-card:hover,
.scenario-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.12);
}

.scenario-icon {
    width: 64px;
    height: 64px;
    background-color: #e6f0fa;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 24px;
    color: #0066cc;
}

.scenario-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    margin-bottom: 20px;
}

.scenario-card h3,
.scenario-item h3 {
    font-size: 20px;
    font-weight: 600;
    color: #333;
    margin-bottom: 15px;
    padding: 0 30px;
}

.scenario-card p,
.scenario-item p {
    font-size: 14px;
    line-height: 1.6;
    color: #666;
    padding: 0 30px;
    margin-bottom: 30px;
}

/* 我们的优势 */
.ai-advantages,
.intelligent-advantages {
    background-color: #f9f9f9;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.advantage-card {
    background-color: #fff;
    padding: 40px 30px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.advantage-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.advantage-icon {
    width: 80px;
    height: 80px;
    background-color: #e6f0fa;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 32px;
    color: #0066cc;
}

.advantage-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: #333;
    margin-bottom: 15px;
}

.advantage-card p {
    font-size: 14px;
    line-height: 1.6;
    color: #666;
}

/* 技术优势 */
.technical-advantages,
.tech-advantages {
    background-color: #fff;
    padding: 100px 0;
}

.technical-grid,
.advantages-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.technical-card,
.advantage-item {
    background-color: #f9f9f9;
    padding: 40px 30px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.technical-card::before,
.advantage-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #0066cc, #0099ff);
}

.technical-card:hover,
.advantage-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.12);
}

.technical-icon,
.advantage-icon {
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, #e6f0fa, #d4e6f8);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 28px;
    color: #0066cc;
    box-shadow: 0 4px 12px rgba(0, 102, 204, 0.15);
}

.technical-card h3,
.advantage-item h3 {
    font-size: 20px;
    font-weight: 600;
    color: #333;
    margin-bottom: 15px;
    position: relative;
    z-index: 1;
}

.technical-card p,
.advantage-item p {
    font-size: 14px;
    line-height: 1.6;
    color: #666;
    position: relative;
    z-index: 1;
}

/* 全球业务 */
.global-business {
    background-color: #fff;
}

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

.global-text {
    flex: 1;
}

.global-text p {
    font-size: 16px;
    line-height: 1.8;
    color: #666;
    margin-bottom: 20px;
}

.global-image {
    flex: 1;
}

.global-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* 联系我们 */
.contact-section {
    background-color: #f9f9f9;
}

.contact-content {
    display: flex;
    gap: 60px;
}

.contact-info {
    flex: 1;
}

.contact-info h3 {
    font-size: 24px;
    font-weight: 600;
    color: #333;
    margin-bottom: 20px;
}

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

.contact-info li {
    display: flex;
    align-items: flex-start;
    margin-bottom: 15px;
    color: #666;
}

.contact-info li i {
    color: #0066cc;
    margin-right: 10px;
    font-size: 18px;
    margin-top: 2px;
}

.contact-form {
    flex: 1;
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #0066cc;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* 页脚 */
.footer {
    background-color: #333;
    color: #fff;
    padding: 60px 0 30px;
}

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

.footer-logo {
    text-align: center;
}

.footer-logo-img {
    width: 60px;
    height: 60px;
    margin: 0 auto 15px;
}

.footer-logo h2 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 10px;
    color: #fff;
}

.footer-logo p {
    font-size: 14px;
    opacity: 0.8;
}

.footer-links h3,
.footer-contact h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    color: #fff;
}

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

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

.footer-links a {
    text-decoration: none;
    color: #ccc;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #0066cc;
}

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

.footer-contact li {
    display: flex;
    align-items: flex-start;
    margin-bottom: 10px;
    color: #ccc;
}

.footer-contact li i {
    margin-right: 10px;
    font-size: 16px;
    margin-top: 2px;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #444;
    font-size: 14px;
    opacity: 0.7;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .intro-content,
    .ecosystem-content,
    .global-content,
    .contact-content {
        flex-direction: column;
        text-align: center;
    }
    
    .intro-text,
    .ecosystem-text,
    .global-text {
        order: 1;
    }
    
    .intro-image,
    .ecosystem-image,
    .global-image {
        order: 2;
    }
    
    .banner-content h2 {
        font-size: 36px;
    }
    
    .banner-content p {
        font-size: 18px;
    }
}

@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        padding: 10px 20px;
    }
    
    .nav-links ul {
        flex-wrap: wrap;
        justify-content: center;
        margin-top: 15px;
    }
    
    .nav-links li {
        margin: 0 10px;
    }
    
    .banner {
        padding: 120px 0 80px;
    }
    
    .banner-content h2 {
        font-size: 28px;
    }
    
    .section-title h2 {
        font-size: 28px;
    }
    
    section {
        padding: 80px 0;
    }
}

@media (max-width: 576px) {
    .products-grid,
    .solutions-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .banner-content h2 {
        font-size: 24px;
    }
    
    .banner-content p {
        font-size: 16px;
    }
    
    .section-title h2 {
        font-size: 24px;
    }
}