/* 主体容器样式 */
.about-container {
    padding: 40px 0;
    margin-top: 80px;
    background-color: #fff;
}

/* 通用标题样式 */
.section-title {
    text-align: center;
    font-size: 32px;
    color: #333;
    margin-bottom: 40px;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: #DE2910;
}

/* 公司简介部分 */
.intro-section {
    padding: 60px 0;
    background: #f9f9f9;
}

.intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.intro-text h3 {
    font-size: 24px;
    color: #333;
    margin-bottom: 20px;
}

.intro-text p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 15px;
}

.intro-image img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

/* 发展历程部分 */
.history-section {
    padding: 60px 0;
    background: #fff;
}

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

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: #eee;
}

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

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

.timeline-date {
    position: absolute;
    top: 0;
    right: -90px;
    background: #DE2910;
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
}

.timeline-item:nth-child(even) .timeline-date {
    right: auto;
    left: -90px;
}

.timeline-content {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.timeline-content h4 {
    color: #333;
    margin-bottom: 10px;
}

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

/* 团队介绍部分 */
.team-section {
    padding: 60px 0;
    background: #f9f9f9;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.team-member {
    text-align: center;
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.team-member:hover {
    transform: translateY(-5px);
}

.team-member img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    margin-bottom: 20px;
    object-fit: cover;
}

.team-member h4 {
    color: #333;
    margin-bottom: 5px;
}

.team-member .position {
    color: #DE2910;
    font-weight: bold;
    margin-bottom: 10px;
}

.team-member .desc {
    color: #666;
    font-size: 14px;
    line-height: 1.6;
}

/* 联系我们部分 */
.contact-section {
    padding: 60px 0;
    background: #fff;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.info-item i {
    width: 40px;
    height: 40px;
    background: #DE2910;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.info-text h4 {
    color: #333;
    margin-bottom: 5px;
}

.info-text p {
    color: #666;
}

.contact-form {
    background: #f9f9f9;
    padding: 30px;
    border-radius: 8px;
}

.contact-form h3 {
    color: #333;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

.form-group textarea {
    height: 120px;
    resize: vertical;
}

.submit-btn {
    width: 100%;
    padding: 12px;
    background: #DE2910;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.submit-btn:hover {
    background: #c62410;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .intro-content,
    .contact-content {
        grid-template-columns: 1fr;
    }

    .team-grid {
        grid-template-columns: 1fr;
    }

    .timeline::before {
        left: 0;
    }

    .timeline-item {
        width: 100%;
        padding-left: 30px;
        padding-right: 0;
    }

    .timeline-item:nth-child(even) {
        padding-left: 30px;
    }

    .timeline-date {
        right: auto;
        left: -90px;
    }

    .timeline-item:nth-child(even) .timeline-date {
        left: -90px;
    }
}