/* 页面头部 */
.page-header {
    background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url('../images/about-header-bg.jpg');
    background-size: cover;
    background-position: center;
    padding: 150px 0 80px;
    margin-bottom: 0;
    color: white;
    text-align: center;
}

.page-header h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.page-header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* 公司简介 */
.company-intro {
    padding: 80px 0;
    background-color: white;
}

.intro-content {
    margin-bottom: 40px;
}

.intro-content p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 20px;
}

.company-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 40px;
}

.stat-item {
    text-align: center;
    padding: 20px;
    background: var(--light-gray);
    border-radius: 10px;
    transition: transform 0.3s ease;
}

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

.stat-item h3 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.stat-item p {
    color: var(--text-color);
    margin: 0;
}

.intro-image {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.intro-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* 发展历程 */
.history-section {
    padding: 80px 0;
    background-color: var(--light-gray);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 40px auto 0;
    padding: 20px;
}

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

.timeline-item {
    position: relative;
    margin-bottom: 40px;
    width: 50%;
    padding-right: 40px;
}

.timeline-item:nth-child(even) {
    margin-left: 50%;
    padding-right: 0;
    padding-left: 40px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    right: -9px;
    top: 20px;
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 50%;
}

.timeline-item:nth-child(even)::before {
    right: auto;
    left: -11px;
}

.year {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.timeline-item .content {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.timeline-item .content h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: var(--dark-gray);
}

.timeline-item .content p {
    color: #666;
    margin: 0;
}

/* 企业文化 */
.culture-section {
    padding: 80px 0;
    background-color: white;
}

.culture-item {
    text-align: center;
    padding: 30px;
    background: var(--light-gray);
    border-radius: 10px;
    margin-bottom: 30px;
    transition: transform 0.3s ease;
}

.culture-item:hover {
    transform: translateY(-10px);
}

.culture-item .icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.culture-item h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: var(--dark-gray);
}

.culture-item p {
    color: #666;
    margin: 0;
}

/* 荣誉资质 */
.honor-section {
    padding: 80px 0;
    background-color: var(--light-gray);
}

.honor-item {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    margin-bottom: 30px;
    transition: transform 0.3s ease;
}

.honor-item:hover {
    transform: translateY(-10px);
}

.honor-item img {
    width: 100%;
    height: auto;
    display: block;
}

.honor-item h3 {
    padding: 20px;
    margin: 0;
    font-size: 1.1rem;
    color: var(--dark-gray);
    text-align: center;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .page-header {
        padding: 120px 0 60px;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .company-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        width: 100%;
        padding-left: 50px;
        padding-right: 0;
    }
    
    .timeline-item:nth-child(even) {
        margin-left: 0;
        padding-left: 50px;
    }
    
    .timeline-item::before,
    .timeline-item:nth-child(even)::before {
        left: 10px;
    }
    
    .culture-item {
        padding: 20px;
    }
    
    .culture-item .icon {
        width: 60px;
        height: 60px;
    }
}