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

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

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

/* 导航栏样式 */
.navbar {
    background-color: #2c3e50;
    padding: 15px 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo h1 {
    color: #fff;
    font-size: 24px;
}

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

.nav-menu li {
    margin-left: 30px;
}

.nav-menu a {
    color: #fff;
    text-decoration: none;
    font-weight: bold; /* 加粗字体 */
    font-size: 18px; /* 加大字体 */
    transition: color 0.3s ease;
    padding: 10px 0;
}

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

/* 主要内容样式 */
main {
    min-height: calc(100vh - 140px);
}

/* 页面头部 */
.page-header {
    background: linear-gradient(rgba(44, 62, 80, 0.8), rgba(44, 62, 80, 0.9)), url('https://images.unsplash.com/photo-1454165804606-c3d57bc86b40?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2070&q=80');
    background-size: cover;
    background-position: center;
    padding: 100px 0;
    text-align: center;
    color: white;
}

.page-header h1 {
    font-size: 48px;
    margin-bottom: 20px;
}

.page-header p {
    font-size: 24px;
    max-width: 800px;
    margin: 0 auto;
}

/* 首页横幅 */
.hero {
    background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://images.unsplash.com/photo-1454165804606-c3d57bc86b40?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2070&q=80');
    background-size: cover;
    background-position: center;
    height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
}

.hero-content h2 {
    font-size: 48px;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.hero-content p {
    font-size: 24px;
    margin-bottom: 30px;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

/* 按钮样式 */
.btn-primary, .btn-secondary {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

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

.btn-primary:hover {
    background-color: #2980b9;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.btn-secondary {
    background-color: #e74c3c;
    color: white;
}

.btn-secondary:hover {
    background-color: #c0392b;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* 简介部分 */
.intro {
    padding: 80px 0;
    background-color: #ecf0f1;
}

.intro h2, .news h2, .services h2, .cases h2, .careers h2, .contact h2, .about h2 {
    text-align: center;
    margin-bottom: 40px;
    font-size: 36px;
    color: #2c3e50;
}

.intro p {
    font-size: 18px;
    margin-bottom: 20px;
    text-align: center;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* 新闻动态 */
.news {
    padding: 80px 0;
    background-color: #fff;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.news-item {
    background-color: #f8f9fa;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

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

.news-item h3 {
    color: #2c3e50;
    margin-bottom: 10px;
}

.date {
    color: #7f8c8d;
    font-size: 14px;
    margin-bottom: 15px;
}

/* 新闻内容页面 */
.news-content {
    padding: 60px 0;
}

.news-list .news-article {
    background-color: #fff;
    padding: 40px;
    margin-bottom: 40px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.news-article h2 {
    color: #2c3e50;
    margin-bottom: 20px;
}

.meta {
    color: #7f8c8d;
    margin-bottom: 30px;
    font-size: 14px;
}

.meta .date, .meta .category {
    margin-right: 20px;
}

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

/* 业务范围 */
.services {
    padding: 80px 0;
    background-color: #ecf0f1;
}

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

.service-item {
    background-color: #fff;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.service-item:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 20px rgba(0,0,0,0.2);
}

.service-item h3 {
    color: #2c3e50;
    margin-bottom: 15px;
    font-size: 22px;
}

/* 详细业务范围 */
.services-detailed {
    padding: 60px 0;
}

.service-detail {
    margin-bottom: 60px;
}

.service-detail h2 {
    text-align: center;
    margin-bottom: 30px;
    color: #2c3e50;
}

.service-content {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    align-items: center;
}

.service-image {
    flex: 1;
    min-width: 300px;
}

.service-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.service-description {
    flex: 2;
    min-width: 300px;
}

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

.service-description ul {
    margin-left: 20px;
    margin-bottom: 20px;
}

.service-description li {
    margin-bottom: 10px;
}

/* 成功案例 */
.cases-content {
    padding: 60px 0;
}

.case-study {
    background-color: #fff;
    padding: 40px;
    margin-bottom: 40px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.case-study h2 {
    color: #2c3e50;
    margin-bottom: 20px;
}

.case-meta {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}

.industry, .duration {
    background-color: #3498db;
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    margin-right: 15px;
    font-size: 14px;
}

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

.case-image {
    flex: 1;
    min-width: 300px;
}

.case-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.case-description {
    flex: 2;
    min-width: 300px;
}

.case-description h3 {
    color: #2c3e50;
    margin: 20px 0 10px;
}

.case-description p {
    margin-bottom: 15px;
    line-height: 1.8;
}

.case-description ul {
    margin-left: 20px;
    margin-bottom: 20px;
}

.case-description li {
    margin-bottom: 10px;
}

/* 人才发展 */
.culture, .development, .positions {
    padding: 60px 0;
}

.culture {
    background-color: #ecf0f1;
}

.positions {
    background-color: #fff;
}

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

.culture-item, .development-item {
    background-color: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    text-align: center;
}

.culture-item h3, .development-item h3 {
    color: #2c3e50;
    margin-bottom: 15px;
}

.positions-list .position-item {
    background-color: #f8f9fa;
    padding: 30px;
    margin-bottom: 30px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.position-item h3 {
    color: #2c3e50;
    margin-bottom: 20px;
}

.position-details p {
    margin-bottom: 10px;
}

.position-details ul {
    margin-left: 20px;
    margin-bottom: 20px;
}

.position-details li {
    margin-bottom: 8px;
}

/* 联系方式 */
.contact-content {
    padding: 60px 0;
}

.departments {
    margin-bottom: 50px;
}

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

.department-item {
    background-color: #f8f9fa;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.department-item h3 {
    color: #2c3e50;
    margin-bottom: 20px;
}

.contact-person {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 10px;
}

.contact-email {
    color: #3498db;
    font-size: 16px;
}

.contact-info {
    text-align: center;
    padding: 40px;
    background-color: #ecf0f1;
    border-radius: 10px;
}

.contact-info h2 {
    margin-bottom: 30px;
}

.contact-info p {
    margin-bottom: 15px;
    font-size: 16px;
}

/* 公司简介 */
.about-content {
    padding: 60px 0;
}

.about-section {
    margin-bottom: 50px;
}

.about-section h2 {
    text-align: center;
    margin-bottom: 30px;
    color: #2c3e50;
}

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

/* 时间线 */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::after {
    content: '';
    position: absolute;
    width: 6px;
    background-color: #3498db;
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -3px;
}

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

.timeline-item:nth-child(odd) {
    left: 0;
}

.timeline-item:nth-child(even) {
    left: 50%;
}

.timeline-year {
    background-color: #3498db;
    color: white;
    padding: 10px 20px;
    border-radius: 30px;
    text-align: center;
    font-weight: bold;
    margin-bottom: 15px;
}

.timeline-content {
    background-color: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.timeline-content h3 {
    color: #2c3e50;
    margin-bottom: 10px;
}

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

.advantage-item {
    background-color: #f8f9fa;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    text-align: center;
}

.advantage-item h3 {
    color: #2c3e50;
    margin-bottom: 15px;
}

blockquote {
    background-color: #ecf0f1;
    padding: 30px;
    border-left: 5px solid #3498db;
    margin: 30px 0;
    font-style: italic;
}

blockquote p {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 20px;
}

blockquote cite {
    font-weight: bold;
    font-size: 16px;
}

/* 页脚 */
footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 20px 0;
}

/* 文本居中 */
.text-center {
    text-align: center;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
    }
    
    .nav-menu {
        margin-top: 20px;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .nav-menu li {
        margin: 5px 10px;
    }
    
    .hero-content h2, .page-header h1 {
        font-size: 36px;
    }
    
    .hero-content p, .page-header p {
        font-size: 18px;
    }
    
    .intro h2, .news h2, .services h2, .cases h2, .careers h2, .contact h2, .about h2 {
        font-size: 28px;
    }
    
    .timeline::after {
        left: 31px;
    }
    
    .timeline-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
    }
    
    .timeline-item:nth-child(even) {
        left: 0;
    }
    
    .service-content, .case-content {
        flex-direction: column;
    }
}