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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #ffffff;
}

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

/* 导航栏 */
.navbar {
    background-color: #005a9c;
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo h2 {
    color: white;
    font-size: 24px;
    font-weight: bold;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-link {
    color: white;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    padding: 10px 15px;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

/* 首页横幅 */
.hero {
    background: linear-gradient(135deg, #005a9c 0%, #0077cc 100%);
    color: white;
    padding: 100px 0;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    font-weight: bold;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 15px;
    opacity: 0.9;
}

.hero-description {
    font-size: 1.1rem;
    opacity: 0.8;
    line-height: 1.8;
}

/* 页面标题 */
.page-header {
    background: linear-gradient(135deg, #005a9c 0%, #0077cc 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.page-header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* 产品服务 */
.services {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.services h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
    color: #005a9c;
}

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

.service-item {
    background: white;
    padding: 40px 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.15);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.service-item h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #005a9c;
}

.service-item p {
    color: #666;
    line-height: 1.6;
}

/* 关于我们 */
.about {
    padding: 80px 0;
}

.about h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
    color: #005a9c;
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 50px;
    align-items: start;
}

.about-text p {
    margin-bottom: 20px;
    color: #666;
    line-height: 1.8;
    font-size: 1.1rem;
}

.about-features {
    display: grid;
    gap: 25px;
}

.feature {
    background: #f8f9fa;
    padding: 25px;
    border-radius: 8px;
    border-left: 4px solid #005a9c;
}

.feature h4 {
    color: #005a9c;
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.feature p {
    color: #666;
    font-size: 0.95rem;
}

/* 联系信息 */
.contact-info {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.contact-info h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: #005a9c;
}

.contact-info > .container > p {
    text-align: center;
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 50px;
}

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

.contact-item {
    background: white;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.contact-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.contact-item h4 {
    color: #005a9c;
    margin-bottom: 10px;
    font-size: 1.3rem;
}

.contact-item p {
    color: #666;
    margin-bottom: 5px;
}

.cta {
    text-align: center;
}

.btn {
    display: inline-block;
    background-color: #005a9c;
    color: white;
    padding: 15px 40px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: #0077cc;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0,90,156,0.3);
}

/* 联系我们页面样式 */
.contact-details {
    padding: 60px 0;
    background-color: #f8f9fa;
}

.contact-card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.contact-card:hover {
    transform: translateY(-3px);
}

.contact-card h3 {
    color: #005a9c;
    margin: 15px 0 10px;
    font-size: 1.2rem;
}

.contact-note {
    font-size: 0.9rem;
    color: #999 !important;
    font-style: italic;
}

/* 联系表单 */
.contact-form-section {
    padding: 80px 0;
}

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

.form-info h2 {
    color: #005a9c;
    margin-bottom: 20px;
    font-size: 2rem;
}

.form-info p {
    color: #666;
    margin-bottom: 30px;
    line-height: 1.6;
}

.form-benefits {
    list-style: none;
}

.form-benefits li {
    padding: 8px 0;
    color: #333;
    font-weight: 500;
}

.contact-form {
    background: #f8f9fa;
    padding: 40px;
    border-radius: 10px;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #005a9c;
}

.btn-submit {
    width: 100%;
    padding: 15px;
    font-size: 1.1rem;
}

/* 服务优势 */
.service-advantages {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.service-advantages h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
    color: #005a9c;
}

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

.advantage-item {
    background: white;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.advantage-item:hover {
    transform: translateY(-3px);
}

.advantage-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.advantage-item h3 {
    color: #005a9c;
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.advantage-item p {
    color: #666;
    line-height: 1.6;
}

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

.service-process h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
    color: #005a9c;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 30px;
}

.step {
    text-align: center;
    padding: 30px 20px;
}

.step-number {
    width: 60px;
    height: 60px;
    background: #005a9c;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: bold;
    margin: 0 auto 20px;
}

.step h3 {
    color: #005a9c;
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.step p {
    color: #666;
    font-size: 0.95rem;
    line-height: 1.5;
}

/* 页脚 */
footer {
    background-color: #2c3e50;
    color: white;
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
    margin-bottom: 30px;
}

.footer-info h3 {
    margin-bottom: 15px;
    font-size: 1.5rem;
}

.footer-info p {
    color: #bdc3c7;
    line-height: 1.6;
}

.footer-links h4 {
    margin-bottom: 15px;
    font-size: 1.2rem;
}

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

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

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

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid #34495e;
    padding-top: 20px;
    text-align: center;
}

.footer-bottom p {
    color: #bdc3c7;
    margin-bottom: 5px;
}

.footer-bottom a {
    color: #bdc3c7;
    text-decoration: none;
}

.footer-bottom a:hover {
    color: white;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .form-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }
    
    .nav-menu {
        gap: 15px;
    }
    
    .nav-link {
        font-size: 14px;
        padding: 8px 12px;
    }
    
    .services h2,
    .about h2,
    .contact-info h2,
    .service-advantages h2,
    .service-process h2 {
        font-size: 2rem;
    }
    
    .process-steps {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 60px 0;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .page-header {
        padding: 60px 0;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .contact-form {
        padding: 25px 20px;
    }
    
    .services,
    .about,
    .contact-info,
    .service-advantages,
    .service-process,
    .contact-details,
    .contact-form-section {
        padding: 50px 0;
    }
}