/* 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;
}

/* 头部样式 */
header {
    background-color: #003366;
    color: white;
    padding: 15px 0;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo h1 {
    font-size: 18px;
    font-weight: bold;
}

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

nav ul li {
    margin-left: 15px;
}

nav ul li a {
    color: white;
    text-decoration: none;
    font-size: 16px;
    font-weight: bold;
    padding: 8px 12px;
    display: block;
    transition: all 0.3s ease;
    border-radius: 4px;
}

nav ul li a:hover,
nav ul li a.active {
    background-color: #0055aa;
}

/* 页面头部 */
.page-header {
    background: linear-gradient(rgba(0, 51, 102, 0.8), rgba(0, 51, 102, 0.9)), url('https://images.unsplash.com/photo-1460925895917-afdab827c52f?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1000&q=80');
    background-size: cover;
    background-position: center;
    color: white;
    text-align: center;
    padding: 60px 0;
}

.page-header h1 {
    font-size: 36px;
    font-weight: bold;
}

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

/* 首页横幅 */
.hero {
    background: linear-gradient(rgba(0, 51, 102, 0.8), rgba(0, 51, 102, 0.9)), url('https://images.unsplash.com/photo-1460925895917-afdab827c52f?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1000&q=80');
    background-size: cover;
    background-position: center;
    color: white;
    text-align: center;
    padding: 100px 0;
}

.hero h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

.hero p {
    font-size: 18px;
    margin-bottom: 30px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    background-color: #ff6600;
    color: white;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 4px;
    font-weight: bold;
    transition: background-color 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: #e55500;
}

/* 简介部分 */
.intro {
    padding: 60px 0;
    background-color: #f8f9fa;
}

.intro h2 {
    text-align: center;
    margin-bottom: 40px;
    font-size: 32px;
    color: #003366;
}

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

.intro-content p {
    font-size: 16px;
    margin-bottom: 20px;
    flex: 1;
}

/* 新闻动态 */
.news {
    padding: 60px 0;
}

.news h2 {
    text-align: center;
    margin-bottom: 40px;
    font-size: 32px;
    color: #003366;
}

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

.news-item {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 25px;
    transition: transform 0.3s ease;
}

.news-item:hover {
    transform: translateY(-5px);
}

.news-item h3 {
    color: #003366;
    margin-bottom: 10px;
    font-size: 18px;
}

.date {
    color: #ff6600;
    font-size: 14px;
    margin-bottom: 15px;
}

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

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

/* 业务范围 */
.services {
    padding: 60px 0;
    background-color: #f8f9fa;
}

.services h2 {
    text-align: center;
    margin-bottom: 40px;
    font-size: 32px;
    color: #003366;
}

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

.service-item {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 30px;
    text-align: center;
    transition: transform 0.3s ease;
}

.service-item:hover {
    transform: translateY(-5px);
}

.service-item h3 {
    color: #003366;
    margin-bottom: 15px;
    font-size: 22px;
}

.service-item p {
    color: #666;
    margin-bottom: 15px;
}

.service-item ul {
    text-align: left;
    margin-top: 15px;
    padding-left: 20px;
}

.service-item ul li {
    margin-bottom: 8px;
    color: #666;
}

/* 底部样式 */
footer {
    background-color: #003366;
    color: white;
    text-align: center;
    padding: 20px 0;
}

/* 关于我们页面 */
.about-content {
    padding: 60px 0;
}

.about-text h2 {
    color: #003366;
    margin-bottom: 20px;
    font-size: 28px;
}

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

/* 时间线 */
.timeline {
    position: relative;
    margin: 30px 0;
}

.timeline-item {
    display: flex;
    margin-bottom: 30px;
}

.timeline-year {
    background-color: #003366;
    color: white;
    padding: 10px 15px;
    border-radius: 4px;
    font-weight: bold;
    min-width: 80px;
    text-align: center;
}

.timeline-content {
    margin-left: 20px;
    padding: 10px;
    border-left: 2px solid #003366;
}

.timeline-content h3 {
    color: #003366;
    margin-bottom: 10px;
}

/* 企业文化 */
.culture {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.culture-item {
    background-color: #f8f9fa;
    padding: 25px;
    border-radius: 8px;
    border-left: 4px solid #ff6600;
}

.culture-item h3 {
    color: #003366;
    margin-bottom: 15px;
}

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

.pagination {
    text-align: center;
    margin-top: 40px;
}

.page-btn {
    display: inline-block;
    padding: 10px 15px;
    margin: 0 5px;
    background-color: #f8f9fa;
    color: #333;
    text-decoration: none;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.page-btn:hover,
.page-btn.active {
    background-color: #003366;
    color: white;
}

/* 服务内容页面 */
.services-content {
    padding: 60px 0;
}

.services-intro {
    text-align: center;
    margin-bottom: 50px;
}

.services-intro h2 {
    color: #003366;
    font-size: 32px;
    margin-bottom: 20px;
}

.services-intro p {
    font-size: 18px;
    max-width: 800px;
    margin: 0 auto;
    color: #666;
}

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

.cases-intro {
    text-align: center;
    margin-bottom: 50px;
}

.cases-intro h2 {
    color: #003366;
    font-size: 32px;
    margin-bottom: 20px;
}

.cases-intro p {
    font-size: 18px;
    max-width: 800px;
    margin: 0 auto;
    color: #666;
}

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

.case-item {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: transform 0.3s ease;
}

.case-item:hover {
    transform: translateY(-5px);
}

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

.case-content {
    padding: 25px;
}

.case-content h3 {
    color: #003366;
    margin-bottom: 10px;
}

.case-industry,
.case-time {
    color: #ff6600;
    font-size: 14px;
    margin-bottom: 10px;
}

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

/* 知识库页面 */
.knowledge-content {
    padding: 60px 0;
}

.knowledge-intro {
    text-align: center;
    margin-bottom: 50px;
}

.knowledge-intro h2 {
    color: #003366;
    font-size: 32px;
    margin-bottom: 20px;
}

.knowledge-intro p {
    font-size: 18px;
    max-width: 800px;
    margin: 0 auto;
    color: #666;
}

.knowledge-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.category h3 {
    color: #003366;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #003366;
}

.category ul {
    list-style: none;
}

.category ul li {
    margin-bottom: 12px;
}

.category ul li a {
    color: #666;
    text-decoration: none;
    transition: color 0.3s ease;
}

.category ul li a:hover {
    color: #ff6600;
}

.latest-reports h2 {
    color: #003366;
    font-size: 28px;
    margin-bottom: 30px;
    text-align: center;
}

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

.report-item {
    background-color: #f8f9fa;
    padding: 25px;
    border-radius: 8px;
    border-left: 4px solid #ff6600;
}

.report-item h3 {
    color: #003366;
    margin-bottom: 10px;
}

.report-date {
    color: #ff6600;
    font-size: 14px;
    margin-bottom: 15px;
}

.report-item p {
    color: #666;
    margin-bottom: 20px;
}

/* 联系我们页面 */
.contact-content {
    padding: 60px 0;
}

.contact-intro {
    text-align: center;
    margin-bottom: 50px;
}

.contact-intro h2 {
    color: #003366;
    font-size: 32px;
    margin-bottom: 20px;
}

.contact-intro p {
    font-size: 18px;
    max-width: 800px;
    margin: 0 auto;
    color: #666;
}

.contacts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.contact-item {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 30px;
    text-align: center;
    transition: transform 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-5px);
}

.contact-item h3 {
    color: #003366;
    margin-bottom: 20px;
}

.contact-person {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 10px;
    color: #333;
}

.contact-email {
    color: #ff6600;
    font-size: 14px;
}

.contact-email.break-word {
    word-break: break-all;
    word-wrap: break-word;
}

.contact-note {
    background-color: #f8f9fa;
    padding: 30px;
    border-radius: 8px;
    border-left: 4px solid #003366;
}

.contact-note h3 {
    color: #003366;
    margin-bottom: 20px;
}

.contact-note ul {
    padding-left: 20px;
}

.contact-note ul li {
    margin-bottom: 10px;
    color: #666;
}

/* 响应式设计 */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
    }

    nav ul {
        margin-top: 15px;
        flex-wrap: wrap;
        justify-content: center;
    }

    nav ul li {
        margin: 5px;
    }

    .hero {
        padding: 60px 0;
    }

    .hero h2 {
        font-size: 28px;
    }

    .intro-content {
        flex-direction: column;
    }

    .page-header h1 {
        font-size: 28px;
    }

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