/* 关于我们页面专用样式 */

/* 页面标题 */
.page-header {
    height: 300px;
    background-color: #333;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    /* margin-top: 70px; */
}

.page-header h1 {
    font-size: 3rem;
    font-weight: 300;
    margin-bottom: 15px;
    letter-spacing: 2px;
}

.page-header p {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto;
    opacity: 0.8;
}

/* 公司简介 */
.about-intro {
    padding: 100px 0;
    background-color: #fff;
}

.about-intro-content {
    display: flex;
    align-items: center;
    gap: 60px;
}

.about-intro-text {
    flex: 1;
}

.about-intro-text h2 {
    font-size: 2.2rem;
    margin-bottom: 30px;
    font-weight: 600;
    color: #333;
}

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

.about-intro-image {
    flex: 1;
    /*box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);*/
}

/* 发展历程 */
.about-history {
    padding: 100px 0;
    background-color: #f9f9f9;
}

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

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 2px;
    background-color: #df1f29;
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: 60px;
}

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

.timeline-dot {
    position: absolute;
    top: 10px;
    left: 50%;
    width: 20px;
    height: 20px;
    background-color: #df1f29;
    border-radius: 50%;
    transform: translateX(-50%);
    z-index: 1;
}

.timeline-content {
    position: relative;
    width: calc(50% - 40px);
    padding: 20px;
    background-color: #fff;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-left: auto;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-right: auto;
}

.timeline-content h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    font-weight: 500;
    color: #333;
}

.timeline-content p {
    color: #666;
    line-height: 1.6;
}

/* 核心价值观 */
.about-values {
    padding: 100px 0;
    background-color: #fff;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.value-item {
    padding: 40px 30px;
    text-align: center;
    background-color: #f9f9f9;
    transition: all 0.3s ease;
}

.value-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.value-icon {
    margin-bottom: 20px;
}

.value-icon i {
    font-size: 3rem;
    color: #333;
}

.value-item h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    font-weight: 400;
}

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

/* 团队介绍 */
.about-team {
    padding: 100px 0;
    background-color: #f9f9f9;
}

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

.team-member {
    background-color: #fff;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    transition: all 0.3s ease;
}

.team-member:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.member-image {
    overflow: hidden;
}

.member-image img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.team-member:hover .member-image img {
    transform: scale(1.1);
}

.team-member h3 {
    font-size: 1.5rem;
    margin: 20px 0 5px;
    padding: 0 20px;
    font-weight: 400;
}

.member-title {
    color: #666;
    font-style: italic;
    margin-bottom: 15px;
    padding: 0 20px;
}

.member-desc {
    color: #666;
    padding: 0 20px 20px;
    line-height: 1.6;
}

/* 合作伙伴 */
.about-partners {
    padding: 100px 0;
    background-color: #fff;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.partner-item {
    padding: 20px;
    /*background-color: #f9f9f9;*/
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.partner-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
}

.partner-item img {
    max-width: 100%;
    /*filter: grayscale(100%);*/
    transition: filter 0.3s ease;
}

.partner-item:hover img {
    filter: grayscale(0%);
}

/* 联系我们 */
.about-contact {
    padding: 100px 0;
    background-color: #222;
    color: #fff;
    text-align: center;
}

.about-contact h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    font-weight: 300;
}

.about-contact p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 40px;
    opacity: 0.8;
}

.about-contact .btn {
    background-color: transparent;
    border: 2px solid #fff;
}

.about-contact .btn:hover {
    background-color: #fff;
    color: #333;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .about-intro-content {
        flex-direction: column;
    }
    
    .timeline::before {
        left: 30px;
    }
    
    .timeline-dot {
        left: 30px;
    }
    
    .timeline-content {
        width: calc(100% - 80px);
        margin-left: 80px !important;
    }
}

@media (max-width: 768px) {
    .page-header {
        height: 300px;
    }
    
    .page-header h1 {
        font-size: 2.2rem;
    }
    
    .about-intro-text h2 {
        font-size: 1.8rem;
    }
    
    .about-contact h2 {
        font-size: 2rem;
    }
}

@media (max-width: 576px) {
    .team-grid {
        grid-template-columns: 1fr;
    }
    
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}