/* 关于我们页面特有样式 */
.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: #fff;
    padding: var(--spacing-3xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.page-header h1 {
    font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-5xl));
    margin-bottom: var(--spacing-md);
    font-weight: 700;
    position: relative;
    z-index: 1;
    line-height: 1.2;
}

.page-header p {
    font-size: clamp(var(--font-size-lg), 2vw, var(--font-size-xl));
    opacity: 0.95;
    position: relative;
    z-index: 1;
}

/* About Us Section */
.about-us {
    padding: var(--spacing-3xl) 0;
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

.about-intro {
    margin-bottom: 4rem;
    text-align: center;
}

.about-intro h2 {
    font-size: clamp(var(--font-size-3xl), 4vw, var(--font-size-4xl));
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    font-weight: 700;
    line-height: 1.2;
}

.about-intro p {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.service-capabilities {
    margin: 4rem 0;
}

.service-capabilities h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    text-align: center;
    color: #333;
}

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

.capability-item {
    background: var(--bg-secondary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-md);
    text-align: center;
    transition: all var(--transition-base);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.capability-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

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

.capability-item h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #333;
}

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

.mission-vision {
    margin: 4rem 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 3rem;
}

.mission, .vision {
    background: #f8f9fa;
    padding: 2.5rem;
    border-radius: 12px;
}

.mission h2, .vision h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: #333;
    border-bottom: 3px solid #667eea;
    padding-bottom: 0.5rem;
}

.mission p, .vision p {
    font-size: 1.1rem;
    color: #666;
    line-height: 1.8;
}

.our-values {
    margin: 4rem 0;
}

.our-values h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    text-align: center;
    color: #333;
}

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

.value-item {
    background: #fff;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border-left: 4px solid #667eea;
    transition: all 0.3s ease;
}

.value-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.value-item h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #333;
}

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

.contact-cta-inline {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 3rem;
    border-radius: 12px;
    text-align: center;
    margin-top: 4rem;
}

.contact-cta-inline h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.contact-cta-inline p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.contact-cta-inline .cta-button {
    margin-top: 1rem;
}

@media (max-width: 768px) {
    .page-header {
        padding: var(--spacing-xl) 0;
    }
    
    .about-us {
        padding: var(--spacing-xl) 0;
    }
    
    .mission-vision {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .capabilities-grid,
    .values-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .capability-item,
    .value-item {
        padding: var(--spacing-lg);
    }
}

footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 1.5rem 2rem;
    font-size: 0.9rem;
}

footer a {
    color: #fff;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

footer p {
    margin-bottom: 0.5rem;
}