* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
    overflow-x: hidden;
}

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

.section {
    padding: 100px 0;
}

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

.section-header h2 {
    font-size: 2.5rem;
    color: #1a3a5f;
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-header h2:after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: #3498db;
    border-radius: 2px;
}

.section-header .subtitle {
    font-size: 1.2rem;
    color: #7f8c8d;
    max-width: 700px;
    margin: 20px auto 0;
}

.dark-bg {
    background-color: #f9fbfd;
}

/* 头部导航 */
.header {
    background: rgba(255, 255, 255, 0.95);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    padding: 15px 0;
    transition: all 0.4s ease;
}

.header.scrolled {
    padding: 10px 0;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.15);
}

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

.logo h1 {
    font-size: 1rem;
    color: #1a3a5f;
    font-weight: 600;
    white-space: nowrap;
}

.logo i {
    color: #3498db;
    margin-right: 8px;
}

.logo-text h1 {
    font-size: 1.5rem;
    color: #1a3a5f;
    font-weight: 600;
    margin-bottom: 2px;
}

.logo-text p {
    font-size: 0.85rem;
    color: #7f8c8d;
    margin: 0;
}

.logo-shield svg {
    display: block;
}

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

.nav li {
    margin: 0 15px;
}

.nav a {
    text-decoration: none;
    color: #34495e;
    font-weight: 500;
    font-size: 1rem;
    position: relative;
    padding: 5px 0;
    transition: color 0.3s;
}

.nav a:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: #3498db;
    transition: width 0.3s;
}

.nav a:hover:after,
.nav a.active:after {
    width: 100%;
}

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

.contact-info-header {
    display: flex;
    gap: 25px;
}

.contact-info-header div {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #34495e;
    font-size: 0.9rem;
}

.contact-info-header i {
    color: #3498db;
}

/* 首页横幅 */
.hero {
    height: 100vh;
    min-height: 700px;
    background: linear-gradient(135deg, #1a3a5f 0%, #2c3e50 100%);
    position: relative;
    display: flex;
    align-items: center;
    color: #fff;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('https://images.unsplash.com/photo-1449824913935-59a10b8d2000?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1740&q=80') no-repeat center center;
    background-size: cover;
    opacity: 0.3;
    z-index: 1;
}

.hero-container {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.hero-content {
    max-width: 800px;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: -1px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.8rem;
    margin-bottom: 20px;
    opacity: 0.9;
}

.hero-description {
    font-size: 1.2rem;
    margin-bottom: 50px;
    max-width: 600px;
    opacity: 0.8;
}

.hero-features {
    display: flex;
    gap: 40px;
    margin: 50px 0;
    flex-wrap: wrap;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 15px;
    text-align: left;
    max-width: 250px;
}

.feature-item i {
    font-size: 2rem;
    color: #3498db;
    background: rgba(255, 255, 255, 0.1);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-item h4 {
    font-size: 1.2rem;
    margin: 0 0 5px;
    color: #fff;
}

.feature-item p {
    margin: 0;
    opacity: 0.8;
    font-size: 0.9rem;
}

.hero-cta {
    display: flex;
    gap: 20px;
    margin-top: 30px;
}

.btn-primary, .btn-secondary {
    display: inline-block;
    padding: 16px 40px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

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

.btn-primary:hover {
    background: #2980b9;
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid #3498db;
}

.btn-secondary:hover {
    background: rgba(52, 152, 219, 0.1);
    transform: translateY(-3px);
}

.hero-image img {
    max-width: 500px;
    border-radius: 10px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

/* 特性区域 */
.features {
    padding: 100px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.feature-item-card {
    text-align: center;
    padding: 40px 30px;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

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

.feature-item-card img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 20px;
}

.feature-item-card h3 {
    font-size: 1.5rem;
    color: #1a3a5f;
    margin-bottom: 15px;
}

.feature-item-card p {
    color: #7f8c8d;
    line-height: 1.7;
}

/* 服务预览 */
.services-preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin: 60px 0;
}

.service-preview-item {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

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

.service-preview-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.service-preview-item h3 {
    padding: 20px 20px 10px;
    font-size: 1.3rem;
    color: #1a3a5f;
}

.service-preview-item p {
    padding: 0 20px 20px;
    color: #7f8c8d;
    line-height: 1.7;
}

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

/* 统计数据 */
.stats {
    background: linear-gradient(135deg, #1a3a5f 0%, #2c3e50 100%);
    color: #fff;
    padding: 100px 0;
}

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

.stat-item {
    padding: 30px 20px;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: #3498db;
    margin-bottom: 10px;
}

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

/* 页面头部 */
.page-header {
    background: linear-gradient(135deg, #1a3a5f 0%, #2c3e50 100%);
    color: #fff;
    padding: 80px 0 40px;
    margin-top: 80px;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1rem;
    opacity: 0.9;
}

.breadcrumb a {
    color: #fff;
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

/* 公司简介页 */
.about-page {
    padding: 80px 0;
}

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

.about-text h2 {
    font-size: 2rem;
    color: #1a3a5f;
    margin-bottom: 25px;
}

.about-text h3 {
    font-size: 1.5rem;
    color: #1a3a5f;
    margin: 30px 0 15px;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #555;
    margin-bottom: 20px;
}

.about-image {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.about-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* 价值观 */
.values {
    padding: 80px 0;
    background: #f9fbfd;
}

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

.value-item {
    text-align: center;
    padding: 40px 20px;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

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

.value-item img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 20px;
}

.value-item h3 {
    font-size: 1.5rem;
    color: #1a3a5f;
    margin-bottom: 15px;
}

.value-item p {
    color: #7f8c8d;
    line-height: 1.7;
}

/* 服务页 */
.services-page {
    padding: 80px 0;
}

.services-intro {
    text-align: center;
    margin-bottom: 60px;
}

.services-intro h2 {
    font-size: 2.5rem;
    color: #1a3a5f;
    margin-bottom: 15px;
}

.services-intro p {
    font-size: 1.2rem;
    color: #7f8c8d;
}

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

.service-item {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

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

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

.service-content {
    padding: 30px;
}

.service-content h3 {
    font-size: 1.5rem;
    color: #1a3a5f;
    margin-bottom: 15px;
}

.service-content p {
    color: #7f8c8d;
    line-height: 1.7;
}

/* 服务流程 */
.service-process {
    padding: 80px 0;
    background: #f9fbfd;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.process-step {
    text-align: center;
    padding: 30px 20px;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    background: #3498db;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 20px;
}

.process-step h3 {
    font-size: 1.3rem;
    color: #1a3a5f;
    margin-bottom: 10px;
}

.process-step p {
    color: #7f8c8d;
    line-height: 1.7;
}

/* 新闻页 */
.news-page {
    padding: 80px 0;
}

.news-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.news-item-card {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: 30px;
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.news-item-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.news-image img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.news-content {
    padding: 30px;
    display: flex;
    flex-direction: column;
}

.news-content h3 {
    font-size: 1.5rem;
    color: #1a3a5f;
    margin-bottom: 10px;
}

.news-content h3 a {
    color: #1a3a5f;
    text-decoration: none;
    transition: color 0.3s;
}

.news-content h3 a:hover {
    color: #3498db;
}

.news-date {
    color: #3498db;
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.news-summary {
    color: #7f8c8d;
    line-height: 1.7;
    margin-bottom: 20px;
}

.read-more {
    color: #3498db;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    transition: gap 0.3s;
}

.read-more:hover {
    gap: 10px;
}

/* 联系页 */
.contact-page {
    padding: 80px 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    margin-bottom: 80px;
}

.contact-info-section h2,
.contact-form-section h2 {
    font-size: 2rem;
    color: #1a3a5f;
    margin-bottom: 30px;
}

.contact-items {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 25px;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.contact-icon img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
}

.contact-details h3 {
    font-size: 1.2rem;
    color: #1a3a5f;
    margin-bottom: 5px;
}

.contact-details a,
.contact-details p {
    color: #7f8c8d;
    text-decoration: none;
    transition: color 0.3s;
}

.contact-details a:hover {
    color: #3498db;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 600;
    color: #34495e;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 15px;
    border: 1px solid #e1e5eb;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
}

.map-section {
    margin-top: 80px;
}

.map-section p {
    font-size: 1.1rem;
    color: #1a3a5f;
    margin-bottom: 20px;
    font-weight: 500;
}

.map-section h2 {
    font-size: 2rem;
    color: #1a3a5f;
    margin-bottom: 15px;
}

.map-container {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.map-container iframe {
    width: 100%;
    display: block;
    border: 0;
}

.working-hours {
    padding: 80px 0;
    background: #f9fbfd;
}

.working-hours h2 {
    font-size: 2rem;
    color: #1a3a5f;
    margin-bottom: 40px;
    text-align: center;
}

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

.working-hours-item {
    text-align: center;
    padding: 30px 20px;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.working-hours-item h3 {
    font-size: 1.3rem;
    color: #1a3a5f;
    margin-bottom: 15px;
}

.working-hours-item p {
    color: #7f8c8d;
    line-height: 1.7;
}

/* 新闻详情页 */
.news-detail {
    padding: 80px 0;
}

.news-article {
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    padding: 40px;
}

.article-header {
    margin-bottom: 30px;
}

.article-header h1 {
    font-size: 2.5rem;
    color: #1a3a5f;
    margin-bottom: 15px;
}

.article-meta {
    color: #7f8c8d;
    font-size: 1rem;
}

.article-main-image {
    width: 100%;
    max-height: 500px;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 30px;
}

.article-body {
    color: #555;
    line-height: 1.8;
    font-size: 1.1rem;
}

.article-body p {
    margin-bottom: 20px;
}

.article-body h3 {
    color: #1a3a5f;
    margin: 30px 0 15px;
}

.related-news {
    padding: 80px 0;
    background: #f9fbfd;
}

.related-news h2 {
    font-size: 2rem;
    color: #1a3a5f;
    margin-bottom: 40px;
    text-align: center;
}

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

.related-news-item {
    display: block;
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    text-decoration: none;
}

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

.related-news-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.related-news-item h4 {
    padding: 20px;
    color: #1a3a5f;
    font-size: 1.2rem;
}

/* 页脚 */
.footer {
    background: #1a3a5f;
    color: #ecf0f1;
    padding: 60px 0 0;
}

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

.footer-section h4,
.footer-section h3 {
    color: #fff;
    margin-bottom: 20px;
    font-size: 1.2rem;
    position: relative;
    padding-bottom: 10px;
}

.footer-section h4:after,
.footer-section h3:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: #3498db;
}

.footer-section p {
    color: #bdc3c7;
    margin-bottom: 20px;
    line-height: 1.7;
}

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

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

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

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

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: #3498db;
    transform: translateY(-3px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 20px 0;
    text-align: center;
}

.footer-bottom p,
.footer-bottom span {
    color: #bdc3c7;
    font-size: 0.9rem;
}

.footer-bottom a {
    color: #bdc3c7;
    text-decoration: none;
    margin: 0 10px;
}

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

/* 响应式设计 */
@media (max-width: 992px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-image {
        margin-top: 50px;
    }
    
    .hero-features {
        justify-content: center;
    }
    
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .about-image,
    .contact-form-section {
        order: -1;
        margin-bottom: 30px;
    }
    
    .news-item-card {
        grid-template-columns: 1fr;
    }
    
    .news-image img {
        height: 300px;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.4rem;
    }
    
    .hero-features {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-primary, .btn-secondary {
        width: 100%;
        max-width: 300px;
    }
    
    .section {
        padding: 70px 0;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .nav {
        display: none;
    }
    
    .contact-info-header {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .container {
        padding: 0 15px;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.service-item, .news-item-card, .feature-item-card, .value-item {
    animation: fadeInUp 0.6s ease forwards;
    opacity: 0;
}