/* 关于页面样式 */
.about-page {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f8f9fa;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* 页面头部 */
.hero-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

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

.hero-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* 公司介绍 */
.company-intro {
    padding: 4rem 0;
    background: white;
}

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

.intro-text h2 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 1.5rem;
}

.intro-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    color: #555;
}

.company-values {
    margin-top: 2rem;
}

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

.company-values ul {
    list-style: none;
    padding: 0;
}

.company-values li {
    padding: 0.75rem 0;
    border-bottom: 1px solid #eee;
}

.company-values li:last-child {
    border-bottom: none;
}

.stats-card {
    background: #f8f9fa;
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.stat-item {
    text-align: center;
    margin-bottom: 2rem;
}

.stat-item:last-child {
    margin-bottom: 0;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #007bff;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    color: #6c757d;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* 服务领域 */
.services-section {
    padding: 4rem 0;
    background: #f8f9fa;
}

.services-section h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 3rem;
}

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

.service-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

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

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

.service-card p {
    color: #6c757d;
    line-height: 1.6;
}

/* 最新文章 */
.recent-articles {
    padding: 4rem 0;
    background: white;
}

.recent-articles h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 3rem;
}

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

.article-preview {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 0.75rem;
    border-left: 4px solid #007bff;
}

.article-preview h3 {
    margin: 0 0 0.75rem 0;
    font-size: 1.25rem;
}

.article-preview h3 a {
    color: #2c3e50;
    text-decoration: none;
    transition: color 0.2s ease;
}

.article-preview h3 a:hover {
    color: #007bff;
}

.article-subtitle {
    color: #6c757d;
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.article-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: #6c757d;
}

.view-all {
    text-align: center;
}

.btn-primary {
    display: inline-block;
    padding: 0.75rem 2rem;
    background: #007bff;
    color: white;
    text-decoration: none;
    border-radius: 0.5rem;
    font-weight: 500;
    transition: background 0.2s ease;
}

.btn-primary:hover {
    background: #0056b3;
    text-decoration: none;
}

/* 联系方式 */
.contact-section {
    padding: 4rem 0;
    background: #f8f9fa;
}

.contact-section h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 3rem;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

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

.contact-item {
    margin-bottom: 1rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid #eee;
}

.contact-item:last-child {
    border-bottom: none;
}

.feedback-form {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #2c3e50;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #dee2e6;
    border-radius: 0.375rem;
    font-size: 1rem;
    transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #007bff;
    box-shadow: 0 0 0 0.2rem rgba(0,123,255,0.25);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* 导航样式 */
.nav-menu .active {
    color: #007bff;
    font-weight: 600;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .intro-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .articles-grid {
        grid-template-columns: 1fr;
    }
    
    .article-meta {
        flex-direction: column;
        gap: 0.5rem;
    }
}

@media (max-width: 480px) {
    .hero-section {
        padding: 2rem 0;
    }
    
    .company-intro,
    .services-section,
    .recent-articles,
    .contact-section {
        padding: 2rem 0;
    }
    
    .intro-text h2,
    .services-section h2,
    .recent-articles h2,
    .contact-section h2 {
        font-size: 2rem;
    }
    
    .service-card,
    .feedback-form {
        padding: 1.5rem;
    }
}