/* 基础样式重置 */
* {
    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: #0d4b8a;
    color: white;
    padding: 15px 0;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-size: 28px;
    font-weight: bold;
    margin-top: 30px;
    margin-bottom: 45px;
    text-align: center;
}

nav ul {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    list-style: none;
    margin-bottom: 10px;
}

nav ul li {
    margin: 0 10px;
}

nav ul li a {
    color: white;
    text-decoration: none;
    font-size: 18px;
    font-weight: bold;
    padding: 8px 15px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

nav ul li a:hover,
nav ul li a.active {
    background-color: #ffffff33;
}

/* 主要内容区域 */
main {
    min-height: calc(100vh - 200px);
}

/* 页面头部 */
.page-header {
    background: linear-gradient(135deg, #0d4b8a 0%, #1e88e5 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
}

.page-header h2 {
    font-size: 42px;
    margin-bottom: 20px;
    color: #fff;
}

.page-header p {
    font-size: 20px;
    max-width: 800px;
    margin: 0 auto;
}

/* 首页横幅 */
.hero {
    background: linear-gradient(135deg, #0d4b8a 0%, #1e88e5 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
}

.hero h2 {
    font-size: 42px;
    margin-bottom: 20px;
    color: #fff;
}

.hero p {
    font-size: 20px;
    margin-bottom: 30px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    background-color: #ff6b00;
    color: white;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 30px;
    font-weight: bold;
    transition: all 0.3s ease;
    border: 2px solid #ff6b00;
    cursor: pointer;
}

.btn:hover {
    background-color: transparent;
    color: #ff6b00;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

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

.intro h2 {
    text-align: center;
    margin-bottom: 50px;
    font-size: 36px;
    color: #0d4b8a;
}

.intro-content {
    display: flex;
    align-items: center;
    gap: 40px;
}

.intro-text {
    flex: 1;
}

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

.intro-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.color-block {
    width: 100%;
    height: 200px;
    background: linear-gradient(45deg, #0d4b8a, #1e88e5);
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* 关于页面样式 */
.about-content {
    padding: 50px 0;
}

.about-intro h3,
.about-vision h3,
.about-history h3,
.about-culture h3 {
    font-size: 32px;
    color: #0d4b8a;
    margin-bottom: 30px;
    text-align: center;
}

.about-intro p {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 30px;
}

.color-block-large {
    width: 100%;
    height: 400px;
    background: linear-gradient(45deg, #0d4b8a, #1e88e5);
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
}

.vision-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.vision-item {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.vision-item h4 {
    color: #0d4b8a;
    font-size: 24px;
    margin-bottom: 15px;
}

.timeline {
    position: relative;
    padding-left: 30px;
    border-left: 3px solid #0d4b8a;
    margin-bottom: 50px;
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
}

.timeline-year {
    position: absolute;
    left: -45px;
    top: 0;
    background: #0d4b8a;
    color: white;
    padding: 5px 10px;
    border-radius: 20px;
    font-weight: bold;
}

.timeline-content {
    background: #f8f9fa;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.timeline-content h4 {
    color: #0d4b8a;
    margin-bottom: 10px;
}

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

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

.value-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #0d4b8a 0%, #1e88e5 100%);
    border-radius: 50%;
    margin: 0 auto 20px;
}

.value-item h4 {
    color: #0d4b8a;
    margin-bottom: 15px;
}

/* 新闻页面样式 */
.news-content {
    padding: 50px 0;
}

.news-filter {
    margin-bottom: 30px;
    text-align: center;
}

.news-filter select {
    padding: 10px 20px;
    border: 2px solid #0d4b8a;
    border-radius: 30px;
    background-color: white;
    color: #0d4b8a;
    font-weight: bold;
    outline: none;
}

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

.news-item {
    background: white;
    border-radius: 10px;
    padding: 25px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

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

.news-item h3 {
    color: #0d4b8a;
    margin-bottom: 10px;
    font-size: 20px;
}

.date {
    color: #ff6b00;
    font-weight: bold;
    margin-bottom: 15px;
    font-size: 14px;
}

.pagination {
    text-align: center;
}

.pagination ul {
    display: inline-flex;
    list-style: none;
}

.pagination ul li {
    margin: 0 5px;
}

.pagination ul li a {
    display: block;
    padding: 10px 15px;
    border-radius: 5px;
    color: #0d4b8a;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
}

.pagination ul li a:hover,
.pagination ul li a.active {
    background-color: #0d4b8a;
    color: white;
}

/* 产品页面样式 */
.products-content {
    padding: 50px 0;
}

.product-categories {
    margin-bottom: 40px;
    text-align: center;
}

.product-categories ul {
    display: inline-flex;
    flex-wrap: wrap;
    list-style: none;
    background: #f8f9fa;
    padding: 10px;
    border-radius: 30px;
}

.product-categories li {
    padding: 10px 20px;
    margin: 5px;
    border-radius: 20px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s ease;
}

.product-categories li:hover,
.product-categories li.active {
    background: #0d4b8a;
    color: white;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

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

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

.product-image {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-info {
    padding: 20px;
}

.product-info h3 {
    color: #0d4b8a;
    margin-bottom: 10px;
    font-size: 20px;
}

.product-desc {
    color: #666;
    margin-bottom: 10px;
    font-size: 14px;
}

.product-spec {
    color: #0d4b8a;
    font-weight: bold;
    margin-bottom: 10px;
}

.product-price {
    color: #ff6b00;
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 15px;
}

.product-features {
    padding: 50px 0;
    background: #f8f9fa;
}

.product-features h2 {
    text-align: center;
    margin-bottom: 50px;
    font-size: 36px;
    color: #0d4b8a;
}

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

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

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

.feature-icon {
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
}

.feature-item h3 {
    color: #0d4b8a;
    margin-bottom: 15px;
    font-size: 22px;
}

/* 服务中心页面样式 */
.service-content {
    padding: 50px 0;
}

.service-intro h3,
.service-process h3,
.service-commitment h3 {
    font-size: 32px;
    color: #0d4b8a;
    margin-bottom: 30px;
    text-align: center;
}

.service-intro p {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 30px;
    text-align: center;
}

.service-details {
    list-style: none;
    margin-top: 20px;
}

.service-details li {
    padding: 8px 0 8px 25px;
    position: relative;
}

.service-details li:before {
    content: "✓";
    color: #ff6b00;
    position: absolute;
    left: 0;
    font-weight: bold;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.step-item {
    text-align: center;
    padding: 30px 20px;
    background: #f8f9fa;
    border-radius: 10px;
}

.step-number {
    width: 50px;
    height: 50px;
    background: #0d4b8a;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: bold;
    margin: 0 auto 20px;
}

.step-item h4 {
    color: #0d4b8a;
    margin-bottom: 15px;
}

.commitment-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

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

.commitment-item h4 {
    color: #0d4b8a;
    margin-bottom: 15px;
}

/* 知识库页面样式 */
.knowledge-content {
    padding: 50px 0;
}

.knowledge-categories {
    margin-bottom: 40px;
    text-align: center;
}

.knowledge-categories ul {
    display: inline-flex;
    flex-wrap: wrap;
    list-style: none;
    background: #f8f9fa;
    padding: 10px;
    border-radius: 30px;
}

.knowledge-categories li {
    padding: 10px 20px;
    margin: 5px;
    border-radius: 20px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s ease;
}

.knowledge-categories li:hover,
.knowledge-categories li.active {
    background: #0d4b8a;
    color: white;
}

.knowledge-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

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

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

.knowledge-image {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.knowledge-info {
    padding: 20px;
}

.knowledge-info h3 {
    color: #0d4b8a;
    margin-bottom: 10px;
    font-size: 20px;
}

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

.category {
    background: #0d4b8a;
    color: white;
    padding: 3px 10px;
    border-radius: 10px;
}

.knowledge-excerpt {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
}

.knowledge-featured {
    background: #f8f9fa;
    padding: 40px;
    border-radius: 10px;
}

.knowledge-featured h3 {
    text-align: center;
    margin-bottom: 30px;
    font-size: 28px;
    color: #0d4b8a;
}

.featured-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.featured-item {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
}

.featured-item h4 {
    color: #0d4b8a;
    margin-bottom: 10px;
}

/* FAQ页面样式 */
.faq-content {
    padding: 50px 0;
}

.faq-search {
    display: flex;
    max-width: 600px;
    margin: 0 auto 30px;
}

.faq-search input {
    flex: 1;
    padding: 12px 20px;
    border: 2px solid #0d4b8a;
    border-radius: 30px 0 0 30px;
    outline: none;
    font-size: 16px;
}

.faq-search .btn {
    border-radius: 0 30px 30px 0;
    border: none;
    padding: 12px 25px;
}

.faq-categories {
    margin-bottom: 40px;
    text-align: center;
}

.faq-categories ul {
    display: inline-flex;
    flex-wrap: wrap;
    list-style: none;
    background: #f8f9fa;
    padding: 10px;
    border-radius: 30px;
}

.faq-categories li {
    padding: 10px 20px;
    margin: 5px;
    border-radius: 20px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s ease;
}

.faq-categories li:hover,
.faq-categories li.active {
    background: #0d4b8a;
    color: white;
}

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

.faq-item {
    background: white;
    border-radius: 10px;
    margin-bottom: 20px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    overflow: hidden;
}

.faq-question {
    padding: 20px;
    background: #f8f9fa;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question h3 {
    color: #0d4b8a;
    font-size: 18px;
    margin: 0;
}

.faq-toggle {
    font-size: 24px;
    font-weight: bold;
    color: #0d4b8a;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.faq-answer {
    padding: 0 20px;
    display: none;
}

.faq-answer p {
    margin-bottom: 20px;
    line-height: 1.8;
}

.faq-answer ul {
    margin-left: 20px;
    margin-bottom: 20px;
}

.faq-answer li {
    margin-bottom: 10px;
}

.faq-item.active {
    border-left: 5px solid #0d4b8a;
}

/* 业务范围 */
.services {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.services h2 {
    text-align: center;
    margin-bottom: 50px;
    font-size: 36px;
    color: #0d4b8a;
}

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

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

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

.icon {
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
}

.circle-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, #0d4b8a 0%, #1e88e5 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-item h3 {
    color: #0d4b8a;
    margin-bottom: 15px;
    font-size: 22px;
}

/* 成功案例 */
.cases {
    padding: 80px 0;
}

.cases h2 {
    text-align: center;
    margin-bottom: 50px;
    font-size: 36px;
    color: #0d4b8a;
}

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

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

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

.case-image {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.case-item h3 {
    padding: 20px 20px 0 20px;
    color: #0d4b8a;
    font-size: 20px;
}

.case-item p {
    padding: 10px 20px 20px 20px;
    color: #666;
}

/* 人才发展 */
.careers {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.careers h2 {
    text-align: center;
    margin-bottom: 50px;
    font-size: 36px;
    color: #0d4b8a;
}

.careers-content {
    display: flex;
    align-items: center;
    gap: 40px;
}

.careers-text {
    flex: 1;
}

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

.careers-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* 联系方式页面样式 */
.contact-content {
    padding: 50px 0;
}

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

.contact-intro h3 {
    font-size: 32px;
    color: #0d4b8a;
    margin-bottom: 20px;
}

.contact-intro p {
    font-size: 18px;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

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

.contact-card h4 {
    color: #0d4b8a;
    margin-bottom: 20px;
    font-size: 22px;
}

.contact-person {
    margin-bottom: 15px;
}

.contact-person .name {
    font-weight: bold;
    color: #333;
    margin-bottom: 5px;
}

.contact-person .email {
    color: #0d4b8a;
    text-decoration: none;
}

.contact-person .email:hover {
    text-decoration: underline;
}

/* 底部样式 */
footer {
    background-color: #0d4b8a;
    color: white;
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.footer-section h3 {
    margin-bottom: 20px;
    font-size: 20px;
}

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

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

.footer-section ul li a {
    color: #ddd;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #ff6b00;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #ffffff33;
}

/* 通用样式 */
.text-center {
    text-align: center;
}

h2 {
    font-size: 36px;
    margin-bottom: 20px;
    color: #0d4b8a;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }

    .logo {
        font-size: 24px;
    }

    nav ul {
        flex-direction: column;
        align-items: center;
    }

    nav ul li {
        margin: 5px 0;
    }

    nav ul li a {
        font-size: 16px;
        padding: 6px 12px;
    }

    .hero,
    .page-header {
        padding: 50px 0;
    }

    .hero h2,
    .page-header h2 {
        font-size: 32px;
    }

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

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

    .services-grid,
    .cases-grid,
    .vision-grid,
    .culture-values,
    .news-list,
    .products-grid,
    .features-grid,
    .process-steps,
    .commitment-content,
    .knowledge-grid,
    .featured-list,
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .timeline {
        padding-left: 20px;
    }

    .timeline-year {
        left: -35px;
    }

    .pagination ul,
    .product-categories ul,
    .knowledge-categories ul,
    .faq-categories ul {
        flex-wrap: wrap;
    }

    .product-categories ul,
    .knowledge-categories ul,
    .faq-categories ul {
        padding: 5px;
    }

    .product-categories li,
    .knowledge-categories li,
    .faq-categories li {
        padding: 8px 15px;
        margin: 3px;
        font-size: 14px;
    }

    .knowledge-featured {
        padding: 20px;
    }

    .faq-search {
        flex-direction: column;
        gap: 10px;
    }

    .faq-search input {
        border-radius: 30px;
    }

    .faq-search .btn {
        border-radius: 30px;
    }
}

/* SEO优化 */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: bold;
    line-height: 1.3;
}

a {
    color: #1e88e5;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

img {
    max-width: 100%;
    height: auto;
}

/* 涟漪效果 */
.ripple {
    position: absolute;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.7);
    transform: scale(0);
    animation: ripple 0.6s linear;
}

@keyframes ripple {
    to {
        transform: scale(2.5);
        opacity: 0;
    }
}