/* 
 * 关于我们页面样式
 */

/* 页面标题 */
.page-header {
    background-color: #0066CC;
    color: #fff;
    padding: 100px 0 50px;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.breadcrumb {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
}

.breadcrumb a {
    color: #fff;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

/* 关于我们导航 */
.about-nav {
    background-color: #f9f9f9;
    border-bottom: 1px solid #eee;
}

.tab-nav {
    display: flex;
    justify-content: center;
    padding: 0;
}

.tab-nav li {
    margin: 0;
}

.tab-nav a {
    display: block;
    padding: 15px 30px;
    font-weight: 500;
    color: #333;
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
}

.tab-nav a:hover {
    color: #0066CC;
}

.tab-nav a.active {
    color: #0066CC;
    border-bottom-color: #0066CC;
}

/* 内容区域 */
.about-section {
    padding: 80px 0;
    display: none;
}

.about-section.active {
    display: block;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 50px;
    align-items: start;
}

.about-image img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.about-content h2 {
    font-size: 2rem;
    color: #333;
    margin-bottom: 20px;
    position: relative;
}

.about-content h2:after {
    content: '';
    display: block;
    width: 50px;
    height: 3px;
    background-color: #0066CC;
    margin-top: 10px;
}

.about-content p {
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-content h3 {
    font-size: 1.5rem;
    color: #0066CC;
    margin: 30px 0 20px;
}

/* 时间线 */
.timeline {
    position: relative;
    margin: 30px 0;
}

.timeline:before {
    content: '';
    position: absolute;
    top: 0;
    left: 20px;
    height: 100%;
    width: 2px;
    background-color: #eee;
}

.timeline li {
    position: relative;
    padding-left: 60px;
    margin-bottom: 30px;
}

.timeline li:last-child {
    margin-bottom: 0;
}

.year {
    position: absolute;
    left: 0;
    top: 0;
    width: 40px;
    height: 40px;
    background-color: #0066CC;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.8rem;
    z-index: 1;
}

.timeline-content {
    background-color: #f9f9f9;
    padding: 15px 20px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.timeline-content h4 {
    margin-bottom: 5px;
    color: #333;
}

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

/* 组织架构 */
.structure-chart {
    margin: 40px 0;
    text-align: center;
}

.structure-chart img {
    max-width: 100%;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
}

.structure-description {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.structure-item {
    background-color: #f9f9f9;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.structure-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

.structure-item h3 {
    color: #0066CC;
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.structure-item p {
    color: #666;
    line-height: 1.6;
}

/* 企业文化 */
.culture-content {
    margin-top: 40px;
}

.culture-item {
    margin-bottom: 60px;
    text-align: center;
}

.culture-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background-color: rgba(0, 102, 204, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.culture-icon img {
    width: 40px;
    height: 40px;
    margin: 0 auto;
}

.culture-item h3 {
    font-size: 1.8rem;
    color: #333;
    margin-bottom: 20px;
}

.culture-slogan {
    font-size: 1.5rem;
    color: #0066CC;
    font-weight: 600;
    margin-bottom: 20px;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 30px;
}

.value-item {
    background-color: #f9f9f9;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    text-align: left;
}

.value-item h4 {
    color: #0066CC;
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.promise-list {
    max-width: 600px;
    margin: 30px auto;
    text-align: left;
}

.promise-list li {
    position: relative;
    padding-left: 30px;
    margin-bottom: 15px;
    line-height: 1.6;
}

.promise-list li:before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 0;
    color: #0066CC;
    font-weight: bold;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .values-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .structure-description {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .tab-nav {
        flex-direction: column;
    }
    
    .tab-nav a {
        text-align: center;
    }
    
    .values-grid,
    .structure-description {
        grid-template-columns: 1fr;
    }
    
    .page-header {
        padding: 80px 0 30px;
    }
}