/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

/* 导航栏样式 */
.navbar {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    transition: all 0.3s ease;
}

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

.nav-logo h2 {
    color: #2c5aa0;
    font-weight: 700;
    font-size: 1.5rem;
}

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

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

.nav-link:hover,
.nav-link.active {
    color: #2c5aa0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #2c5aa0;
    transition: width 0.3s ease;
}

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

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

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

/* 主横幅样式 */
.hero {
    margin-top: 70px;
    padding: 80px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    display: flex;
    align-items: center;
    min-height: 600px;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 12px 30px;
    border: none;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: pointer;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: #ff6b6b;
    color: white;
}

.btn-primary:hover {
    background: #ff5252;
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background: white;
    color: #667eea;
}

.btn-outline {
    background: transparent;
    color: #2c5aa0;
    border: 2px solid #2c5aa0;
}

.btn-outline:hover {
    background: #2c5aa0;
    color: white;
}

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

.hero-placeholder {
    width: 300px;
    height: 300px;
    background: rgba(255,255,255,0.1);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    backdrop-filter: blur(10px);
}

/* 章节通用样式 */
section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    color: #333;
    margin-bottom: 1rem;
    font-weight: 700;
}

.section-header p {
    font-size: 1.1rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

/* 关于我们预览 */
.about-preview {
    background: #f8f9fa;
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text h3 {
    font-size: 1.8rem;
    color: #2c5aa0;
    margin-bottom: 1rem;
}

.about-text p {
    margin-bottom: 1rem;
    color: #666;
    line-height: 1.8;
}

.about-stats {
    display: grid;
    gap: 2rem;
}

.stat-item {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.stat-item h4 {
    font-size: 2.5rem;
    color: #2c5aa0;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat-item p {
    color: #666;
    font-weight: 500;
}

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

.service-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    text-align: center;
    transition: transform 0.3s ease;
}

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

.service-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.service-card h3 {
    font-size: 1.3rem;
    color: #333;
    margin-bottom: 1rem;
}

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

/* 联系信息预览 */
.contact-preview {
    background: #f8f9fa;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info h2 {
    font-size: 2rem;
    color: #333;
    margin-bottom: 1rem;
}

.contact-info p {
    color: #666;
    margin-bottom: 2rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.contact-item strong {
    color: #2c5aa0;
    min-width: 80px;
}

.contact-item a {
    color: #2c5aa0;
    text-decoration: none;
}

.contact-item a:hover {
    text-decoration: underline;
}

.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.contact-form h3 {
    margin-bottom: 1.5rem;
    color: #333;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 12px;
    margin-bottom: 1rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: inherit;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: #2c5aa0;
}

/* 页脚样式 */
.footer {
    background: #333;
    color: white;
    padding: 3rem 0 1rem;
}

.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: #2c5aa0;
}

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

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

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

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

.footer-section ul li a:hover {
    color: #2c5aa0;
}

.footer-bottom {
    border-top: 1px solid #555;
    padding-top: 1rem;
    text-align: center;
    color: #ccc;
}

.footer-bottom a {
    color: #ffffe0;
}

/* 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-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        padding: 60px 0;
    }
    
    .hero-content h1 {
        font-size: 1.8rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .stat-item {
        padding: 1.5rem;
    }
    
    .service-card {
        padding: 1.5rem;
    }
}

/* 页面标题样式 */
.page-header {
    margin-top: 70px;
    padding: 60px 0;
    background: linear-gradient(135deg, #2c5aa0 0%, #1e3a8a 100%);
    color: white;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.1rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

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

.intro-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.intro-text h2 {
    font-size: 2rem;
    color: #2c5aa0;
    margin-bottom: 1rem;
}

.intro-text .lead {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.intro-text p {
    margin-bottom: 1rem;
    color: #666;
    line-height: 1.8;
}

.company-placeholder {
    width: 250px;
    height: 250px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin: 0 auto;
}

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

.placeholder-content h3 {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.placeholder-content p {
    font-size: 1.1rem;
    font-weight: 500;
}

.company-culture {
    background: #f8f9fa;
    padding: 80px 0;
}

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

.culture-item {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    text-align: center;
    transition: transform 0.3s ease;
}

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

.culture-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.culture-item h3 {
    font-size: 1.3rem;
    color: #333;
    margin-bottom: 1rem;
}

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

.company-timeline {
    padding: 80px 0;
}

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

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #2c5aa0;
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    margin-bottom: 3rem;
    position: relative;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-year {
    background: #2c5aa0;
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1.1rem;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.timeline-content {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    width: 45%;
    margin-top: 2rem;
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-right: auto;
    margin-left: 0;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: auto;
    margin-right: 0;
}

.timeline-content h3 {
    color: #2c5aa0;
    margin-bottom: 0.5rem;
}

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

.team-advantages {
    background: #f8f9fa;
    padding: 80px 0;
}

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

.advantage-item {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    text-align: center;
}

.advantage-item h3 {
    color: #2c5aa0;
    margin-bottom: 1rem;
}

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

/* 服务页面样式 */
.main-services {
    padding: 80px 0;
}

.services-detailed {
    display: flex;
    flex-direction: column;
    gap: 4rem;
}

.service-detail {
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    overflow: hidden;
    transition: transform 0.3s ease;
}

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

.service-content {
    padding: 3rem;
}

.service-icon-large {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    display: inline-block;
}

.service-detail h2 {
    color: #2c5aa0;
    margin-bottom: 1rem;
    font-size: 1.8rem;
}

.service-description {
    font-size: 1.1rem;
    color: #666;
    line-height: 1.8;
    margin-bottom: 2rem;
}

.service-features,
.service-tech {
    margin-bottom: 2rem;
}

.service-features h3,
.service-tech h3 {
    color: #333;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.service-features ul {
    list-style: none;
    padding-left: 0;
}

.service-features li {
    padding: 0.5rem 0;
    color: #666;
    position: relative;
    padding-left: 1.5rem;
}

.service-features li::before {
    content: '✓';
    color: #2c5aa0;
    font-weight: bold;
    position: absolute;
    left: 0;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-tag {
    background: #e3f2fd;
    color: #2c5aa0;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.development-process {
    background: #f8f9fa;
    padding: 80px 0;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.process-step {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    text-align: center;
    position: relative;
}

.step-number {
    background: #2c5aa0;
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.2rem;
    margin: 0 auto 1rem;
}

.process-step h3 {
    color: #333;
    margin-bottom: 1rem;
}

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

.why-choose-us {
    padding: 80px 0;
}

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

.reason-item {
    text-align: center;
    padding: 2rem;
}

.reason-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.reason-item h3 {
    color: #2c5aa0;
    margin-bottom: 1rem;
}

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

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

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-details h2 {
    color: #2c5aa0;
    margin-bottom: 1rem;
}

.contact-intro {
    color: #666;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-method {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 10px;
}

.method-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.method-content h3 {
    color: #333;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.method-content p {
    color: #2c5aa0;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.method-content a {
    color: #2c5aa0;
    text-decoration: none;
}

.method-content a:hover {
    text-decoration: underline;
}

.method-desc {
    color: #666;
    font-size: 0.9rem;
}

.contact-form-container {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.contact-form-container h2 {
    color: #2c5aa0;
    margin-bottom: 1rem;
}

.contact-form-container > p {
    color: #666;
    margin-bottom: 2rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #333;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #2c5aa0;
}

.btn-full {
    width: 100%;
}

.faq-section {
    background: #f8f9fa;
    padding: 80px 0;
}

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

.faq-item {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.faq-item h3 {
    color: #2c5aa0;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

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

.map-section {
    padding: 80px 0;
}

.map-container {
    margin-top: 2rem;
}

.map-placeholder {
    background: #f8f9fa;
    border: 2px dashed #ddd;
    border-radius: 10px;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.map-content {
    text-align: center;
    color: #666;
}

.map-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: #2c5aa0;
}

.map-content h3 {
    color: #333;
    margin-bottom: 0.5rem;
}

.map-content p {
    margin-bottom: 0.5rem;
}

.map-note {
    font-style: italic;
    color: #999;
}

/* 响应式设计更新 */
@media (max-width: 768px) {
    .intro-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        flex-direction: row !important;
        padding-left: 60px;
    }
    
    .timeline-year {
        left: 20px;
        transform: translateX(-50%);
    }
    
    .timeline-content {
        width: 100%;
        margin: 2rem 0 0 0 !important;
    }
    
    .process-steps {
        grid-template-columns: 1fr;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
}