.about-container {
    padding-top: 60px;
}

/* 公司简介 */
.company-intro {
    padding: 60px 0;
    background-color: white;
}

.company-intro h2 {
    text-align: center;
    color: #2196F3;
    margin-bottom: 40px;
}

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

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

.intro-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

/* 我们的优势 */
.our-advantages {
    padding: 60px 0;
    background-color: #f8f9fa;
}

.our-advantages h2 {
    text-align: center;
    color: #2196F3;
    margin-bottom: 40px;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.advantage-item {
    text-align: center;
    padding: 20px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

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

.advantage-item img {
    width: 80px;
    height: 80px;
    margin-bottom: 15px;
}

.advantage-item h3 {
    color: #2196F3;
    margin-bottom: 10px;
}

.advantage-item p {
    color: #666;
}

/* 发展历程 */
.history {
    padding: 60px 0;
    background-color: white;
}

.history h2 {
    text-align: center;
    color: #2196F3;
    margin-bottom: 40px;
}

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

.timeline::before {
    content: '';
    position: absolute;
    width: 2px;
    background-color: #2196F3;
    top: 0;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
}

.timeline-item {
    padding: 20px 0;
    position: relative;
    width: 50%;
    animation: fadeIn 0.5s ease;
}

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

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

.year {
    position: absolute;
    background-color: #2196F3;
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: bold;
}

.timeline-item:nth-child(odd) .year {
    right: -20px;
}

.timeline-item:nth-child(even) .year {
    left: -20px;
}

.content {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.content h3 {
    color: #2196F3;
    margin-bottom: 10px;
}

.content p {
    color: #666;
}

/* 联系方式 */
.contact {
    padding: 60px 0;
    background-color: #f8f9fa;
}

.contact h2 {
    text-align: center;
    color: #2196F3;
    margin-bottom: 40px;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.contact-info h3,
.contact-form h3 {
    color: #2196F3;
    margin-bottom: 20px;
}

.contact-info p {
    margin-bottom: 15px;
    color: #666;
    display: flex;
    align-items: center;
}

.contact-info i {
    margin-right: 10px;
    color: #2196F3;
}

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

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    transition: border-color 0.3s ease;
}

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

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: #2196F3;
    outline: none;
}

.submit-btn {
    background-color: #2196F3;
    color: white;
    padding: 12px 24px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.submit-btn:hover {
    background-color: #1976D2;
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .intro-content,
    .advantages-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .timeline::before {
        left: 0;
    }
    
    .timeline-item {
        width: 100%;
        padding-left: 30px;
    }
    
    .timeline-item:nth-child(even) {
        left: 0;
    }
    
    .timeline-item .year {
        left: -10px;
        right: auto;
    }
    
    .advantage-item {
        margin-bottom: 20px;
    }
}