/* ==================== 页面通用样式 ==================== */
.page-header {
    margin-top: 80px;
    padding: 80px 0 60px;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    color: var(--white);
    text-align: center;
}

.page-header h1 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 15px;
}

.page-header p {
    font-size: 18px;
    opacity: 0.9;
}

.breadcrumb {
    padding: 15px 0;
    background: var(--light-gray);
    font-size: 14px;
}

.breadcrumb a {
    color: var(--primary);
}

.breadcrumb span {
    color: var(--gray);
}

/* ==================== 关于页面样式 ==================== */
.intro-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.intro-content h2 {
    font-size: 32px;
    color: var(--dark);
    margin: 15px 0 25px;
}

.intro-lead {
    font-size: 17px;
    color: #555;
    margin-bottom: 25px;
}

.intro-content p {
    margin-bottom: 15px;
    color: #555;
    line-height: 1.8;
}

.intro-stats {
    display: flex;
    gap: 40px;
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid #eee;
}

.stat-item {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 32px;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: 14px;
    color: var(--gray);
}

.intro-image img {
    width: 100%;
    height: 450px;
    object-fit: cover;
    border-radius: var(--radius);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
}

/* 发展历程时间线 */
.timeline-section {
    padding: 100px 0;
    background: var(--light-gray);
}

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

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

.timeline-item {
    position: relative;
    padding: 0 0 50px 0;
    width: 50%;
}

.timeline-item:nth-child(odd) {
    padding-right: 60px;
    text-align: right;
}

.timeline-item:nth-child(even) {
    margin-left: 50%;
    padding-left: 60px;
}

.timeline-dot {
    position: absolute;
    width: 16px;
    height: 16px;
    background: var(--primary);
    border-radius: 50%;
    border: 3px solid var(--white);
    box-shadow: 0 0 0 3px var(--primary);
}

.timeline-item:nth-child(odd) .timeline-dot {
    right: -8px;
    top: 5px;
}

.timeline-item:nth-child(even) .timeline-dot {
    left: -8px;
    top: 5px;
}

.timeline-date {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 10px;
}

.timeline-content h3 {
    font-size: 20px;
    color: var(--dark);
    margin-bottom: 10px;
}

.timeline-content p {
    font-size: 15px;
    color: var(--gray);
}

/* 核心优势 */
.core-advantages {
    padding: 100px 0;
}

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

.advantage-item {
    display: flex;
    gap: 20px;
    padding: 30px;
    background: var(--light-gray);
    border-radius: var(--radius);
    transition: var(--transition);
}

.advantage-item:hover {
    background: var(--white);
    box-shadow: var(--shadow);
}

.advantage-icon {
    font-size: 40px;
    flex-shrink: 0;
}

.advantage-text h3 {
    font-size: 18px;
    color: var(--dark);
    margin-bottom: 10px;
}

.advantage-text p {
    font-size: 14px;
    color: var(--gray);
}

/* 团队 */
.team-section {
    padding: 100px 0;
    background: var(--light-gray);
}

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

.team-card {
    background: var(--white);
    padding: 40px 30px;
    text-align: center;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.team-avatar {
    font-size: 70px;
    margin-bottom: 20px;
}

.team-card h3 {
    font-size: 20px;
    color: var(--dark);
    margin-bottom: 5px;
}

.team-position {
    font-size: 14px;
    color: var(--primary);
    margin-bottom: 15px;
}

.team-desc {
    font-size: 14px;
    color: var(--gray);
}

/* 设备展示 */
.equipment-section {
    padding: 100px 0;
}

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

.equipment-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.equipment-img {
    height: 200px;
    overflow: hidden;
}

.equipment-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    background: linear-gradient(135deg, #e9ecef 0%, #dee2e6 100%);
}

.equipment-card h3 {
    font-size: 16px;
    color: var(--dark);
    padding: 20px 20px 10px;
}

.equipment-card p {
    font-size: 13px;
    color: var(--gray);
    padding: 0 20px 20px;
}

/* CTA */
.cta-section {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    text-align: center;
    color: var(--white);
}

.cta-section h2 {
    font-size: 32px;
    margin-bottom: 15px;
}

.cta-section p {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 30px;
}

.cta-btns {
    display: flex;
    gap: 20px;
    justify-content: center;
}

/* ==================== 案例页面样式 ==================== */
.cases-section {
    padding: 80px 0;
}

.cases-filters {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    margin-bottom: 40px;
    justify-content: center;
}

.filter-btn {
    padding: 10px 24px;
    border: 1px solid #ddd;
    background: var(--white);
    border-radius: 30px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 14px;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

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

.case-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.case-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.case-image {
    position: relative;
    height: 220px;
    overflow: hidden;
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
}

.case-overlay {
    position: absolute;
    top: 15px;
    left: 15px;
}

.case-category {
    background: var(--primary);
    color: var(--white);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 12px;
}

.case-content {
    padding: 25px;
}

.case-industry {
    font-size: 12px;
    color: var(--primary);
    font-weight: 600;
}

.case-content h3 {
    font-size: 18px;
    color: var(--dark);
    margin: 10px 0;
}

.case-content p {
    font-size: 14px;
    color: var(--gray);
    margin-bottom: 15px;
}

.case-meta {
    display: flex;
    gap: 20px;
    font-size: 12px;
    color: var(--gray);
}

/* 客户评价 */
.testimonials {
    padding: 100px 0;
    background: var(--light-gray);
}

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

.testimonial-card {
    background: var(--white);
    padding: 35px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.testimonial-content {
    font-size: 15px;
    color: #555;
    line-height: 1.8;
    margin-bottom: 25px;
    font-style: italic;
}

.testimonial-content::before {
    content: '"';
    font-size: 40px;
    color: var(--primary);
    opacity: 0.3;
}

.testimonial-author {
    display: flex;
    flex-direction: column;
}

.author-name {
    font-weight: 600;
    color: var(--dark);
}

.author-company {
    font-size: 13px;
    color: var(--gray);
}

/* ==================== 产品服务页面样式 ==================== */
.services-overview {
    padding: 60px 0;
    background: var(--light-gray);
}

.services-nav {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.service-nav-item {
    padding: 12px 30px;
    background: var(--white);
    border-radius: var(--radius);
    color: var(--dark);
    font-weight: 500;
    transition: var(--transition);
}

.service-nav-item:hover,
.service-nav-item.active {
    background: var(--primary);
    color: var(--white);
}

.service-detail {
    padding: 100px 0;
}

.service-detail.alt-bg {
    background: var(--light-gray);
}

.service-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.service-detail-grid.reverse {
    direction: rtl;
}

.service-detail-grid.reverse > * {
    direction: ltr;
}

.service-detail-content .section-tag {
    margin-bottom: 10px;
}

.service-detail-content h2 {
    font-size: 32px;
    color: var(--dark);
    margin-bottom: 20px;
}

.service-lead {
    font-size: 17px;
    color: #555;
    margin-bottom: 30px;
}

.service-detail-content h3 {
    font-size: 20px;
    color: var(--dark);
    margin: 30px 0 15px;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    padding: 10px 0;
    padding-left: 25px;
    position: relative;
    color: #555;
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
}

.service-detail-content h3:last-of-type {
    margin-top: 30px;
}

.service-tags {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin: 30px 0;
}

.tag {
    padding: 5px 15px;
    background: var(--light-gray);
    border-radius: 20px;
    font-size: 13px;
    color: var(--gray);
}

.service-action {
    display: flex;
    gap: 15px;
    margin-top: 30px;
}

.service-detail-image {
    position: relative;
}

.service-detail-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: var(--radius);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
}

.service-image-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px;
    background: linear-gradient(transparent, rgba(0,0,0,0.7));
    color: var(--white);
    font-size: 14px;
}

.service-specs {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid #eee;
}

.service-specs h3 {
    font-size: 18px;
    color: var(--dark);
    margin-bottom: 20px;
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.spec-item {
    background: var(--white);
    padding: 20px;
    border-radius: var(--radius);
    text-align: center;
}

.spec-label {
    display: block;
    font-size: 13px;
    color: var(--gray);
    margin-bottom: 8px;
}

.spec-value {
    font-size: 15px;
    font-weight: 600;
    color: var(--dark);
}

/* 加工能力 */
.capability-section {
    padding: 100px 0;
    background: var(--light-gray);
}

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

.capability-card {
    background: var(--white);
    padding: 40px 30px;
    text-align: center;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.capability-icon {
    font-size: 50px;
    margin-bottom: 20px;
}

.capability-card h3 {
    font-size: 18px;
    color: var(--dark);
    margin-bottom: 10px;
}

.capability-card p {
    font-size: 14px;
    color: var(--gray);
}

/* 行业应用 */
.industry-application {
    padding: 80px 0;
}

.industry-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
}

.industry-tag {
    padding: 12px 25px;
    background: var(--light-gray);
    border-radius: var(--radius);
    font-size: 15px;
    color: var(--dark);
    transition: var(--transition);
}

.industry-tag:hover {
    background: var(--primary);
    color: var(--white);
}

/* ==================== 响应式 ==================== */
@media (max-width: 1024px) {
    .intro-grid,
    .service-detail-grid {
        grid-template-columns: 1fr;
    }
    
    .advantages-list,
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .equipment-grid,
    .capability-grid,
    .cases-grid,
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .specs-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .service-detail-grid.reverse {
        direction: ltr;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        width: 100%;
        padding-left: 60px !important;
        padding-right: 0 !important;
        text-align: left !important;
    }
    
    .timeline-item .timeline-dot {
        left: 12px !important;
        right: auto !important;
    }
}

@media (max-width: 768px) {
    .intro-stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .advantages-list,
    .team-grid,
    .equipment-grid,
    .capability-grid,
    .cases-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .specs-grid {
        grid-template-columns: 1fr;
    }
    
    .services-nav {
        flex-direction: column;
        align-items: stretch;
    }
    
    .service-action {
        flex-direction: column;
    }
    
    .cases-filters {
        flex-direction: column;
    }
    
    .filter-btn {
        text-align: center;
    }
}