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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

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

/* 头部样式 */
.header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo img {
    height: 50px;
    width: auto;
}

.company-name {
    font-size: 20px;
    font-weight: 600;
    color: #2c3e50;
}

.nav {
    display: flex;
    gap: 30px;
}

.nav a {
    text-decoration: none;
    color: #555;
    font-size: 16px;
    padding: 8px 16px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.nav a:hover,
.nav a.active {
    color: #3498db;
    background-color: #f0f8ff;
}

/* 主要内容样式 */
.main {
    min-height: calc(100vh - 200px);
}

/* 首页英雄区域 */
.hero {
    background: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
    color: #fff;
    padding: 100px 0;
    text-align: center;
}

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

.hero .subtitle {
    font-size: 24px;
    margin-bottom: 15px;
    opacity: 0.95;
}

.hero .description {
    font-size: 18px;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* 特性区域 */
.features {
    padding: 80px 0;
    background: #fff;
}

.features h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
    color: #2c3e50;
}

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

.feature-item {
    text-align: center;
    padding: 30px;
    border-radius: 10px;
    background: #f8f9fa;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

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

.feature-item h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: #2c3e50;
}

.feature-item p {
    color: #666;
    line-height: 1.8;
}

/* 关于预览区域 */
.about-preview {
    padding: 80px 0;
    background: #f8f9fa;
    text-align: center;
}

.about-preview h2 {
    font-size: 36px;
    margin-bottom: 30px;
    color: #2c3e50;
}

.about-preview p {
    font-size: 18px;
    color: #666;
    max-width: 800px;
    margin: 0 auto 30px;
    line-height: 1.8;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    background: #3498db;
    color: #fff;
    text-decoration: none;
    border-radius: 5px;
    font-size: 16px;
    transition: background 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background: #2980b9;
}

/* 页面头部 */
.page-header {
    background: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
    color: #fff;
    padding: 60px 0;
    text-align: center;
}

.page-header h1 {
    font-size: 42px;
    font-weight: 700;
}

/* 关于页面内容 */
.about-content {
    padding: 80px 0;
}

.about-section {
    margin-bottom: 60px;
}

.about-section h2 {
    font-size: 32px;
    margin-bottom: 30px;
    color: #2c3e50;
    border-bottom: 3px solid #3498db;
    padding-bottom: 10px;
    display: inline-block;
}

.about-section p {
    font-size: 18px;
    color: #666;
    line-height: 1.8;
    margin-bottom: 15px;
}

/* 企业文化网格 */
.culture-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.culture-item {
    background: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.culture-item h3 {
    font-size: 22px;
    color: #3498db;
    margin-bottom: 15px;
}

.culture-item p {
    color: #666;
    line-height: 1.8;
}

/* 时间线 */
.timeline {
    margin-top: 30px;
}

.timeline-item {
    display: flex;
    margin-bottom: 30px;
    position: relative;
}

.timeline-year {
    width: 120px;
    font-size: 20px;
    font-weight: 600;
    color: #3498db;
    flex-shrink: 0;
}

.timeline-content {
    flex: 1;
    padding-left: 30px;
    border-left: 3px solid #3498db;
}

.timeline-content h3 {
    font-size: 20px;
    color: #2c3e50;
    margin-bottom: 10px;
}

.timeline-content p {
    color: #666;
    line-height: 1.8;
}

/* 联系页面内容 */
.contact-content {
    padding: 80px 0;
}

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

.contact-info h2,
.contact-form h2 {
    font-size: 32px;
    margin-bottom: 30px;
    color: #2c3e50;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 30px;
}

.contact-icon {
    font-size: 32px;
    margin-right: 20px;
    flex-shrink: 0;
}

.contact-detail h3 {
    font-size: 18px;
    color: #2c3e50;
    margin-bottom: 5px;
}

.contact-detail p {
    color: #666;
    font-size: 16px;
}

/* 表单样式 */
.contact-form form {
    background: #fff;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #2c3e50;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

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

.form-group textarea {
    resize: vertical;
}

/* 页脚样式 */
.footer {
    background: #2c3e50;
    color: #fff;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.company-info h3 {
    font-size: 22px;
    margin-bottom: 20px;
}

.company-info p {
    margin-bottom: 10px;
    color: #bdc3c7;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

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

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

.footer-bottom {
    border-top: 1px solid #34495e;
    padding-top: 30px;
    text-align: center;
}

.footer-bottom p {
    margin-bottom: 10px;
    color: #bdc3c7;
    font-size: 14px;
}

.icp-info {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.icp-info a {
    color: #bdc3c7;
    text-decoration: none;
    font-size: 14px;
}

.icp-info a:hover {
    color: #3498db;
}

.separator {
    color: #7f8c8d;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 15px;
    }

    .nav {
        gap: 15px;
    }

    .hero h1 {
        font-size: 32px;
    }

    .hero .subtitle {
        font-size: 18px;
    }

    .features h2,
    .about-preview h2,
    .page-header h1 {
        font-size: 28px;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .timeline-item {
        flex-direction: column;
    }

    .timeline-year {
        margin-bottom: 10px;
    }

    .timeline-content {
        padding-left: 20px;
    }
}