/* Page Part 1 Styles */
.page-part-1 {
    width: 100%;
    height: 600px;
    display: flex;
    align-items: center;
    background-color: #ffffff;
    overflow: hidden;
}

.page-part-1 .container {
    max-width: var(--max-width-lg);
    margin: 0 auto;
    padding: 0;
    width: 100%;
}

.page-part-1 .corporate-profile {
    display: flex;
    height: 100%;
    width: 100%;
}

.page-part-1 .profile-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 0 60px;
    box-sizing: border-box;
}

.page-part-1 .profile-content h2 {
    color: #c01c24;
    font-size: 28px;
    font-weight: bold;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.page-part-1 .profile-content p {
    color: #333333;
    font-size: 16px;
    line-height: 1.6;
    margin: 0;
}

.page-part-1 .profile-image {
    flex: 1;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}

.page-part-1 .profile-image .building-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

/* page-part-2样式 */
.page-part-2 {
    background-color: #000;
    color: #fff;
    padding: 60px 0;
    position: relative;
}

.page-part-2 .container {
    max-width: var(--max-width-lg);
    margin: 0 auto;
    padding: 0;
    width: 100%;
}

.core-competencies {
    display: flex;
    flex-wrap: nowrap;
    gap: 50px;
    align-items: stretch;
}

.competencies-content {
    flex: 1;
    min-width: 300px;
    display: flex;
    flex-direction: column;
}

.competencies-video {
    flex: 1;
    min-width: 300px;
    display: flex;
    align-items: stretch;
}

.competencies-video video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 8px;
}

.core-competencies h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 30px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.competencies-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.competencies-list li {
    font-size: 16px;
    margin-bottom: 15px;
    padding-left: 30px;
    position: relative;
    line-height: 1.6;
}

.competencies-list li i {
    position: absolute;
    left: 0;
    top: 3px;
    color: #fff;
    font-size: 18px;
}

/* page-part-3样式 */
.page-part-3 {
    background-color: #e0e0e0;
    padding: 80px 0;
}

.page-part-3 .container {
    max-width: var(--max-width-lg);
    margin: 0 auto;
    padding: 0;
    width: 100%;
}

.engineering-section {
    display: flex;
    flex-direction: column;
    gap: 50px;
}

.section-content {
    flex: 1;
    max-width: 100%;
}

.section-content h2 {
    font-size: 32px;
    font-weight: 700;
    color: #000000;
    margin-bottom: 25px;
}

.section-content p {
    font-size: 16px;
    line-height: 1.8;
    color: #333333;
    margin-bottom: 20px;
}

.section-content p:last-child {
    margin-bottom: 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.service-item {
    text-align: center;
    padding: 20px;
}

.service-icon {
    margin-bottom: 20px;
    display: inline-block;
}

.service-icon i {
    font-size: 40px;
    color: #c01c24;
}

.service-item h3 {
    font-size: 20px;
    font-weight: 600;
    color: #000000;
    margin-bottom: 10px;
}

.service-item p {
    font-size: 14px;
    line-height: 1.6;
    color: #555555;
}

/* 响应式设计 - page-part-3 */
@media (max-width: 768px) {
    .services-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .section-content h2 {
        font-size: 28px;
    }
}

/* Page Part 4 Styles */
.page-part-4 {
    background-color: #ffffff;
    padding: 80px 0;
}

.page-part-4 .container {
    max-width: var(--max-width-lg);
    margin: 0 auto;
    padding: 0;
    width: 100%;
}

.company-info-section {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 50px;
}

.company-text {
    flex: 1;
    min-width: 300px;
}

.company-subtitle {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    font-size: 14px;
    letter-spacing: 0.5px;
}

.red-line {
    display: inline-block;
    width: 40px;
    height: 2px;
    background-color: #e63946;
    margin-right: 15px;
}

.company-text h2 {
    font-size: 32px;
    color: #1a1a1a;
    margin-bottom: 20px;
    font-weight: 700;
}

.company-text p {
    font-size: 16px;
    line-height: 1.8;
    color: #4a4a4a;
    margin-bottom: 0;
}

.company-image {
    flex: 1;
    min-width: 300px;
}

.engine-img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    border-radius: 4px;
}

/* Responsive Styles - page-part-4 */
@media (max-width: 768px) {
    .page-part-4 {
        padding: 60px 0;
    }
    
    .company-info-section {
        flex-direction: column;
        gap: 30px;
    }
    
    .company-text h2 {
        font-size: 28px;
    }
    
    .company-subtitle {
        font-size: 12px;
        flex-wrap: wrap;
    }
    
    .red-line {
        width: 30px;
        margin-right: 10px;
    }
}

/* 统一设置最大宽度为1280px */
.page-part-1 .container,
.page-part-2 .container,
.page-part-3 .container,
.page-part-4 .container {
    max-width: 1280px;
}

/* 响应式布局规则 */
@media (max-width: 1300px) {
    .page-part-1 .container,
    .page-part-2 .container,
    .page-part-3 .container,
    .page-part-4 .container {
        max-width: 1140px;
    }
}

@media (max-width: 1200px) {
    .page-part-1 .container,
    .page-part-2 .container,
    .page-part-3 .container,
    .page-part-4 .container {
        max-width: 1024px;
        padding: 0 20px;
    }
}

@media (max-width: 768px) {
    .page-part-1 .container,
    .page-part-2 .container,
    .page-part-3 .container,
    .page-part-4 .container {
        max-width: 100%;
        padding: 0 15px;
    }
    
    .page-part-1 .profile-content {
        padding: 0 20px;
    }
}

@media (max-width: 480px) {
    .page-part-1 .profile-content {
        padding: 0 15px;
    }
}