/* 工程简介页面样式 */
:root {
    --primary-blue: #1a237e;
    --primary-orange: #ff6b00;
    --gradient-primary: linear-gradient(135deg, #1a237e 0%, #ff6b00 100%);
    --gradient-hover: linear-gradient(135deg, #ff6b00 0%, #1a237e 100%);
}

/* 英雄区域 */
.projects-hero {
    background: var(--gradient-primary);
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
    margin-top: 80px;
    position: relative;
}

.projects-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../images/projects-bg.jpg') center/cover;
    opacity: 0.2;
    z-index: 1;
}

.projects-hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    position: relative;
    z-index: 2;
}

.projects-hero p {
    font-size: 1.2rem;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.3);
    position: relative;
    z-index: 2;
}

/* 服务介绍 */
.service-intro {
    padding: 6rem 2rem;
    background: #f8f9fa;
}

.service-intro h2 {
    text-align: center;
    color: var(--primary-blue);
    font-size: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
}

.service-intro h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    margin: 1rem auto;
    border-radius: 2px;
}

.service-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-item {
    background: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.service-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.service-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.service-item:hover::before {
    transform: scaleX(1);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin-bottom: 1.5rem;
}

.service-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.service-item h3 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.service-item p {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.service-features {
    list-style: none;
    padding: 0;
}

.service-features li {
    margin-bottom: 0.8rem;
    padding-left: 1.5rem;
    position: relative;
    color: #666;
}

.service-features li::before {
    content: "✓";
    color: var(--primary-orange);
    position: absolute;
    left: 0;
    font-weight: bold;
}

/* 项目展示 */
.project-showcase {
    padding: 6rem 2rem;
    background: #fff;
}

.project-showcase h2 {
    text-align: center;
    color: var(--primary-blue);
    font-size: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
}

.project-showcase h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    margin: 1rem auto;
    border-radius: 2px;
}

.project-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 3rem;
}

.project-item {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

.project-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.project-image {
    height: 250px;
    overflow: hidden;
    position: relative;
}

.project-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
}

.project-item:hover .project-image::before {
    opacity: 0.1;
}

.project-image img {
    width: 100%;
    height: 100%;
    transition: transform 0.3s ease;
}

.project-item:hover .project-image img {
    transform: scale(1.05);
}

.project-info {
    padding: 2rem;
}

.project-info h3 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.project-info p {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.project-details {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-top: 1.5rem;
}

.project-detail {
    display: flex;
    flex-direction: column;
}

.project-detail span:first-child {
    color: #999;
    font-size: 0.9rem;
    margin-bottom: 0.3rem;
}

.project-detail span:last-child {
    color: var(--primary-blue);
    font-weight: 500;
}

/* 技术团队 */
.technical-team {
    padding: 6rem 2rem;
    background: var(--gradient-primary);
    color: #fff;
    position: relative;
}

.technical-team::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../images/pattern.png') center/cover;
    opacity: 0.1;
}

.technical-team h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
    z-index: 1;
}

.technical-team h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: #fff;
    margin: 1rem auto;
    border-radius: 2px;
}

.team-content {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.team-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.stat-item {
    text-align: center;
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 10px;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.stat-number {
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.2rem;
}

.team-description {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

/* 质量体系 */
.quality-system {
    padding: 6rem 2rem;
    background: #f8f9fa;
}

.quality-system h2 {
    text-align: center;
    color: var(--primary-blue);
    font-size: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
}

.quality-system h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    margin: 1rem auto;
    border-radius: 2px;
}

.quality-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.certifications {
    background: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.certifications h3 {
    color: var(--primary-blue);
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    position: relative;
    padding-bottom: 1rem;
}

.certifications h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.cert-list {
    list-style: none;
    padding: 0;
}

.cert-list li {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
    color: #666;
}

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

.quality-policy {
    background: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.quality-policy h3 {
    color: var(--primary-blue);
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    position: relative;
    padding-bottom: 1rem;
}

.quality-policy h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.quality-policy p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 1rem;
}

/* 项目流程 */
.project-process {
    padding: 6rem 2rem;
    background: #fff;
}

.project-process h2 {
    text-align: center;
    color: var(--primary-blue);
    font-size: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
}

.project-process h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    margin: 1rem auto;
    border-radius: 2px;
}

.process-steps {
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
}

.process-steps::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 4px;
    background: var(--gradient-primary);
    transform: translateX(-50%);
}

.process-step {
    display: flex;
    margin-bottom: 4rem;
    position: relative;
}

.process-step:nth-child(odd) {
    flex-direction: row-reverse;
}

.process-step:last-child {
    margin-bottom: 0;
}

.step-content {
    width: calc(50% - 30px);
    background: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

.process-step:hover .step-content {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.step-number {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: bold;
    font-size: 1.2rem;
    z-index: 1;
}

.step-content h3 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

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

/* 响应式设计 */
@media (max-width: 768px) {
    .projects-hero h1 {
        font-size: 2rem;
    }
    
    .quality-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .process-steps::before {
        left: 30px;
    }
    
    .process-step {
        flex-direction: row !important;
    }
    
    .step-content {
        width: calc(100% - 60px);
        margin-left: 60px;
    }
    
    .step-number {
        left: 30px;
    }
    
    .project-grid {
        grid-template-columns: 1fr;
    }
}