/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 基础样式 */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

/* 导航栏 */
.header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.nav-brand h1 {
    color: #2c3e50;
    font-size: 1.8rem;
    font-weight: 700;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #3498db;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* 主要内容 */
main {
    margin-top: 80px;
}

/* 首页横幅 */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 100px 0;
    text-align: center;
}

.hero-title {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-description {
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 3rem;
    opacity: 0.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 30px;
    border: none;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    display: inline-block;
}

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

.btn-primary:hover {
    background: #2980b9;
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background: white;
    color: #333;
}

/* 通用区块样式 */
section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #2c3e50;
    position: relative;
}

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

/* 关于我们 */
.about {
    background: #f8f9fa;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.about-text p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    line-height: 1.8;
}

.about-values h3 {
    color: #2c3e50;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.about-values ul {
    list-style: none;
}

.about-values li {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
}

.about-values li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #27ae60;
    font-weight: bold;
}

/* 服务项目 */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.service-card {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.service-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.service-card h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

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

/* 团队介绍 */
.team {
    background: #f8f9fa;
}

.team-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.team-content p {
    font-size: 1.2rem;
    margin-bottom: 3rem;
    color: #555;
}

.team-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.feature h4 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.feature p {
    color: #666;
    font-size: 1rem;
    margin-bottom: 0;
}

/* 联系我们 */
.contact-content {
    text-align: center;
}

.contact-info p {
    margin-bottom: 0.8rem;
    color: #555;
    font-size: 1.1rem;
}

.contact-form {
    background: #f8f9fa;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.contact-form h3 {
    color: #2c3e50;
    margin-bottom: 2rem;
    text-align: center;
    font-size: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #333;
    font-weight: 600;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e1e8ed;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #3498db;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

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

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: white;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

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

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

.footer-bottom {
    border-top: 1px solid #34495e;
    padding-top: 2rem;
    text-align: center;
}

.footer-bottom p {
    margin-bottom: 0.5rem;
    color: #bdc3c7;
}

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

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

/* 响应式设计 */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 200px;
        text-align: center;
    }
    
    section {
        padding: 60px 0;
    }
    
    .hero {
        padding: 80px 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .team-features {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

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

.service-card,
.feature {
    animation: fadeInUp 0.6s ease-out;
}

/* 表单提交成功提示 */
.form-success {
    background: #d4edda;
    color: #155724;
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 1rem;
    border: 1px solid #c3e6cb;
    display: none;
}

.form-error {
    background: #f8d7da;
    color: #721c24;
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 1rem;
    border: 1px solid #f5c6cb;
    display: none;
}

/* 页面标题 */
.page-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.page-header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* 关于我们页面样式 */
.about-intro {
    padding: 80px 0;
}

.intro-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.intro-content h2 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 2rem;
}

.intro-content p {
    font-size: 1.2rem;
    line-height: 1.8;
    color: #555;
}

.company-info {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.company-info h3 {
    color: #2c3e50;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.company-info ul {
    list-style: none;
}

.company-info li {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
}

.company-info li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: #3498db;
    font-weight: bold;
}

/* 时间线样式 */
.timeline {
    background: #f8f9fa;
    padding: 80px 0;
}

.timeline-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.timeline-content::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #3498db;
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    justify-content: flex-end;
    padding-right: 50%;
    margin-bottom: 3rem;
    position: relative;
}

.timeline-item:nth-child(even) {
    justify-content: flex-start;
    padding-left: 50%;
    padding-right: 0;
}

.timeline-year {
    background: #3498db;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    font-weight: bold;
    margin-bottom: 1rem;
    width: fit-content;
}

.timeline-content-inner {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    position: relative;
}

.timeline-content-inner::before {
    content: '';
    position: absolute;
    top: 50%;
    width: 20px;
    height: 20px;
    background: #3498db;
    border-radius: 50%;
    transform: translateY(-50%);
}

.timeline-item:nth-child(odd) .timeline-content-inner::before {
    right: -60px;
}

.timeline-item:nth-child(even) .timeline-content-inner::before {
    left: -60px;
}

.timeline-content-inner h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

/* 企业文化样式 */
.culture {
    padding: 80px 0;
}

.culture-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.culture-item {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s ease;
}

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

.culture-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.culture-item h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

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

/* 企业优势样式 */
.certifications {
    background: #f8f9fa;
    padding: 80px 0;
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.cert-item {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s ease;
}

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

.cert-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.cert-item h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

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

/* 服务详情页面样式 */
.services-intro {
    background: #f8f9fa;
    padding: 80px 0;
    text-align: center;
}

.services-intro h2 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 2rem;
}

.services-intro p {
    font-size: 1.2rem;
    line-height: 1.8;
    color: #555;
    max-width: 800px;
    margin: 0 auto;
}

.service-detail {
    padding: 80px 0;
}

.service-detail.alternate {
    background: #f8f9fa;
}

.service-header {
    text-align: center;
    margin-bottom: 3rem;
}

.service-icon-large {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.service-header h2 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 1rem;
}

.service-header p {
    font-size: 1.2rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

.service-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.service-description h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.service-description p {
    margin-bottom: 1.5rem;
    line-height: 1.8;
    color: #555;
}

.service-description ul {
    list-style: none;
    margin-bottom: 2rem;
}

.service-description li {
    margin-bottom: 0.8rem;
    padding-left: 1.5rem;
    position: relative;
}

.service-description li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #27ae60;
    font-weight: bold;
}

.service-features h3 {
    color: #2c3e50;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.feature-list {
    display: grid;
    gap: 1.5rem;
}

.feature-item h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.feature-item p {
    color: #666;
    line-height: 1.6;
    font-size: 0.95rem;
}

/* 服务流程样式 */
.service-process {
    background: #f8f9fa;
    padding: 80px 0;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.step {
    text-align: center;
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    background: #3498db;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 1rem;
}

.step h3 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-size: 1.3rem;
}

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

/* 联系页面样式 */
.contact-section {
    padding: 80px 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.contact-info-card {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.contact-info-card h2 {
    color: #2c3e50;
    margin-bottom: 2rem;
    font-size: 1.8rem;
    text-align: center;
}

.info-item {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #e1e8ed;
}

.info-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.info-icon {
    font-size: 2rem;
    margin-right: 1rem;
    width: 60px;
    text-align: center;
}

.info-content h3 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.info-content p {
    color: #555;
    margin: 0;
}

/* 咨询表单样式 */
.consultation {
    background: #f8f9fa;
    padding: 80px 0;
}

.consultation-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    align-items: start;
}

.consultation-form {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.consultation-form h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.8rem;
    text-align: center;
}

.consultation-form > p {
    text-align: center;
    color: #666;
    margin-bottom: 2rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #333;
    font-weight: 600;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e1e8ed;
    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;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

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

.form-note {
    margin-top: 1rem;
    color: #666;
    font-size: 0.9rem;
}

.consultation-info h3 {
    color: #2c3e50;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.reason-list {
    margin-bottom: 2rem;
}

.reason-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.reason-icon {
    width: 30px;
    height: 30px;
    background: #27ae60;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1rem;
    flex-shrink: 0;
    font-weight: bold;
}

.reason-text h4 {
    color: #2c3e50;
    margin-bottom: 0.3rem;
    font-size: 1.1rem;
}

.reason-text p {
    color: #666;
    margin: 0;
    font-size: 0.95rem;
}

.contact-hours {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.contact-hours h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.hours-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #e1e8ed;
}

.hours-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.day {
    color: #333;
    font-weight: 600;
}

.time {
    color: #666;
}

/* FAQ样式 */
.faq {
    padding: 80px 0;
}

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

.faq-item {
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    margin-bottom: 1rem;
    overflow: hidden;
}

.faq-question {
    padding: 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.3s ease;
}

.faq-question:hover {
    background-color: #f8f9fa;
}

.faq-question h3 {
    color: #2c3e50;
    margin: 0;
    font-size: 1.2rem;
}

.faq-toggle {
    font-size: 1.5rem;
    color: #3498db;
    font-weight: bold;
    transition: transform 0.3s ease;
}

.faq-answer {
    padding: 0 1.5rem;
    border-top: 1px solid #e1e8ed;
}

.faq-answer p {
    color: #666;
    line-height: 1.6;
    margin: 1.5rem 0;
}

/* 导航链接激活状态 */
.nav-link.active {
    color: #3498db;
}