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

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

/* 导航栏 */
.navbar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 10px 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;
}

.nav-logo h2 {
    color: white;
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 2px;
}

.nav-logo span {
    color: rgba(255,255,255,0.8);
    font-size: 12px;
    font-weight: 400;
}

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

.nav-menu a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    padding: 8px 16px;
    border-radius: 20px;
}

.nav-menu a:hover,
.nav-menu a.active {
    background-color: rgba(255,255,255,0.2);
    transform: translateY(-2px);
}

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

.nav-toggle span {
    width: 25px;
    height: 3px;
    background-color: white;
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
}

/* 页面头部 */
.page-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 120px 0 80px;
    text-align: center;
}

.page-header h1 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
}

.page-header p {
    font-size: 20px;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* 主页横幅 */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 120px 0 80px;
    display: flex;
    align-items: center;
    min-height: 80vh;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero h1 {
    font-size: 56px;
    font-weight: 700;
    margin-bottom: 20px;
    background: linear-gradient(45deg, #fff, #f0f0f0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 28px;
    margin-bottom: 20px;
    opacity: 0.9;
}

.hero-description {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 40px;
    opacity: 0.8;
}

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

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

.hero-image {
    width: 400px;
    height: 400px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

/* 占位图片 */
.placeholder-image {
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(255,255,255,0.1), rgba(255,255,255,0.2));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 120px;
    border-radius: 20px;
}

.placeholder-image.large {
    width: 100%;
    height: 400px;
    border-radius: 15px;
}

.placeholder-image.large span {
    font-size: 80px;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(45deg, #ff6b6b, #ee5a24);
    color: white;
    box-shadow: 0 4px 15px rgba(255,107,107,0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255,107,107,0.6);
}

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

.btn-secondary:hover {
    background: white;
    color: #667eea;
    transform: translateY(-2px);
}

.btn-large {
    padding: 16px 40px;
    font-size: 18px;
}

.btn-full {
    width: 100%;
}

/* 章节标题 */
.section-title {
    text-align: center;
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 60px;
    color: #2c3e50;
}

/* 核心亮点 */
.features {
    padding: 100px 0;
    background-color: #f8f9fa;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.feature-card {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

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

.feature-icon {
    font-size: 60px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 15px;
    color: #2c3e50;
}

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

/* 业务板块 */
.business-sections {
    padding: 100px 0;
}

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

.business-item {
    background: white;
    padding: 30px 20px;
    border-radius: 15px;
    text-align: center;
    border-left: 4px solid #667eea;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

.business-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.12);
}

.business-item h4 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
    color: #2c3e50;
}

.business-item p {
    color: #7f8c8d;
    font-size: 14px;
}

/* 行动召唤 */
.cta-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
}

.cta-content h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 20px;
}

.cta-content p {
    font-size: 18px;
    margin-bottom: 40px;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

/* 页脚 */
.footer {
    background: #2c3e50;
    color: white;
    padding: 60px 0 20px;
}

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

.footer-section h4 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 20px;
    color: #ecf0f1;
}

.footer-section p {
    color: #bdc3c7;
    margin-bottom: 10px;
}

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

.footer-section ul li {
    color: #bdc3c7;
    margin-bottom: 8px;
    transition: color 0.3s ease;
}

.footer-section ul li:hover {
    color: #667eea;
}

.social-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.social-links span {
    color: #bdc3c7;
    font-size: 14px;
}

.footer-bottom {
    border-top: 1px solid #34495e;
    padding-top: 20px;
    text-align: center;
    color: #95a5a6;
}

/* 关于我们页面特定样式 */
.company-overview {
    padding: 80px 0;
}

.overview-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    align-items: center;
}

.overview-text h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 30px;
    color: #2c3e50;
}

.lead {
    font-size: 20px;
    font-weight: 600;
    color: #667eea;
    margin-bottom: 20px;
    line-height: 1.6;
}

.overview-text p {
    font-size: 16px;
    line-height: 1.8;
    color: #555;
    margin-bottom: 20px;
}

/* 时间轴 */
.timeline {
    padding: 100px 0;
    background-color: #f8f9fa;
}

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

.timeline-container::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, #667eea, #764ba2);
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: 60px;
    position: relative;
}

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

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

.timeline-year {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    padding: 15px 25px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 18px;
    min-width: 100px;
    text-align: center;
    position: relative;
    z-index: 2;
}

.timeline-content {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    margin: 0 40px;
    flex: 1;
}

.timeline-content h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 10px;
    color: #2c3e50;
}

.timeline-content p {
    color: #7f8c8d;
    line-height: 1.6;
}

/* 全球化布局 */
.global-layout {
    padding: 100px 0;
}

.layout-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.location-card {
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.location-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.location-card h3 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 20px;
    color: #2c3e50;
}

.location-card ul {
    list-style: none;
}

.location-card ul li {
    padding: 8px 0;
    border-bottom: 1px solid #eee;
    color: #555;
}

.location-card ul li:last-child {
    border-bottom: none;
}

/* 企业愿景 */
.vision-mission {
    padding: 100px 0;
    background-color: #f8f9fa;
}

.vision-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.vision-item {
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.vision-item h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 20px;
    color: #2c3e50;
}

.vision-item p {
    font-size: 16px;
    line-height: 1.7;
    color: #555;
    margin-bottom: 20px;
}

.vision-item ul {
    list-style: none;
}

.vision-item ul li {
    padding: 8px 0;
    color: #555;
    position: relative;
    padding-left: 20px;
}

.vision-item ul li::before {
    content: '•';
    color: #667eea;
    font-weight: bold;
    position: absolute;
    left: 0;
}

/* 荣誉资质 */
.honors {
    padding: 100px 0;
}

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

.honor-item {
    background: white;
    padding: 30px 20px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

.honor-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.12);
}

.honor-icon {
    font-size: 48px;
    margin-bottom: 15px;
}

.honor-item h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
    color: #2c3e50;
}

.honor-item p {
    color: #7f8c8d;
    font-size: 14px;
}

/* 产品服务页面特定样式 */
.platform-intro {
    padding: 100px 0;
}

.platform-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    align-items: center;
}

.platform-text h2 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 20px;
    background: linear-gradient(45deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.platform-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 30px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px;
}

.feature-icon {
    font-size: 24px;
}

/* 业务服务 */
.business-services {
    padding: 100px 0;
    background-color: #f8f9fa;
}

.service-category {
    margin-bottom: 80px;
}

.category-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 40px;
    color: #2c3e50;
    text-align: center;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
}

.service-card {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

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

.service-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.service-card h4 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 15px;
    color: #2c3e50;
}

.service-card p {
    color: #7f8c8d;
    line-height: 1.7;
    margin-bottom: 20px;
}

.service-card ul {
    list-style: none;
}

.service-card ul li {
    color: #555;
    padding: 5px 0;
    position: relative;
    padding-left: 20px;
}

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

/* 技术优势 */
.tech-advantages {
    padding: 100px 0;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.advantage-card {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

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

.advantage-icon {
    font-size: 60px;
    margin-bottom: 20px;
}

.advantage-card h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 15px;
    color: #2c3e50;
}

.advantage-card p {
    color: #7f8c8d;
    line-height: 1.7;
    margin-bottom: 20px;
}

.advantage-card ul {
    list-style: none;
}

.advantage-card ul li {
    color: #555;
    padding: 5px 0;
    position: relative;
    padding-left: 20px;
}

.advantage-card ul li::before {
    content: '•';
    color: #667eea;
    font-weight: bold;
    position: absolute;
    left: 0;
}

/* 联系我们页面特定样式 */
.contact-methods {
    padding: 100px 0;
    background-color: #f8f9fa;
}

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

.contact-card {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

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

.contact-icon {
    font-size: 60px;
    margin-bottom: 20px;
}

.contact-card h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 20px;
    color: #2c3e50;
}

.contact-card p {
    color: #7f8c8d;
    line-height: 1.6;
    margin-bottom: 10px;
}

.contact-card p strong {
    color: #2c3e50;
    font-weight: 600;
}

/* 社交媒体 */
.social-media {
    padding: 100px 0;
}

.social-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.social-item {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

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

.social-icon {
    font-size: 60px;
    margin-bottom: 20px;
}

.social-item h4 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 15px;
    color: #2c3e50;
}

.social-item p {
    color: #7f8c8d;
    line-height: 1.6;
    margin-bottom: 20px;
}

.qr-placeholder {
    width: 120px;
    height: 120px;
    background: linear-gradient(45deg, #667eea, #764ba2);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    color: white;
    font-size: 16px;
}

/* 联系表单 */
.contact-form-section {
    padding: 100px 0;
}

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

.form-text h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 20px;
    color: #2c3e50;
}

.form-text p {
    font-size: 16px;
    line-height: 1.7;
    color: #555;
    margin-bottom: 30px;
}

.form-benefits {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.benefit-item {
    display: flex;
    align-items: center;
    gap: 10px;
}

.benefit-icon {
    font-size: 20px;
}

.contact-form {
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #2c3e50;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e1e8ed;
    border-radius: 10px;
    font-size: 16px;
    transition: all 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-weight: normal;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin: 0;
}

.privacy-link {
    color: #667eea;
    text-decoration: none;
}

.privacy-link:hover {
    text-decoration: underline;
}

/* 办公地址 */
.office-locations {
    padding: 100px 0;
    background-color: #f8f9fa;
}

.locations-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.location-item {
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.location-item h3 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 30px;
    color: #2c3e50;
}

.location-office {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}

.location-office:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.location-office h4 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
    color: #2c3e50;
}

.location-office p {
    color: #7f8c8d;
    line-height: 1.6;
    margin-bottom: 5px;
}

/* 地图 */
.map-section {
    padding: 100px 0;
}

.map-container {
    height: 400px;
    background: #f8f9fa;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.map-placeholder {
    color: #7f8c8d;
}

.map-placeholder p:first-child {
    font-size: 48px;
    margin-bottom: 10px;
}

.map-placeholder p:nth-child(2) {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 5px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero h1 {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 20px;
    }
    
    .hero-cta {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .overview-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .platform-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .form-content {
        grid-template-columns: 1fr;
    }
    
    .locations-grid {
        grid-template-columns: 1fr;
    }
    
    .layout-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .features-grid,
    .business-grid,
    .services-grid,
    .advantages-grid,
    .contact-grid,
    .social-grid {
        grid-template-columns: 1fr;
    }
    
    .timeline-container::before {
        left: 20px;
    }
    
    .timeline-item {
        flex-direction: row !important;
        margin-left: 40px;
    }
    
    .timeline-year {
        min-width: 80px;
        margin-right: 20px;
    }
    
    .timeline-content {
        margin: 0;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .page-header h1 {
        font-size: 36px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero h1 {
        font-size: 28px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 14px;
    }
    
    .btn-large {
        padding: 12px 30px;
        font-size: 16px;
    }
    
    .feature-card,
    .service-card,
    .advantage-card,
    .contact-card,
    .social-item {
        padding: 30px 20px;
    }
    
    .timeline-content {
        padding: 20px;
    }
    
    .contact-form {
        padding: 30px 20px;
    }
}