/* 产业研究页面专用样式 */

/* 研究领域 */
.research-fields {
    padding: 80px 0;
    background: #f7fafc;
    position: relative;
    overflow: hidden;
}

.research-fields:before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0, 47, 167, 0.05) 0%, transparent 70%);
    border-radius: 50%;
}

.fields-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    position: relative;
    z-index: 1;
}

.field-card {
    background: #fff;
    padding: 40px 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: all 0.3s;
    border-bottom: 3px solid transparent;
    position: relative;
    overflow: hidden;
}

.field-card:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #002FA7, #a42227);
    transform: scaleX(0);
    transition: transform 0.3s;
}

.field-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 47, 167, 0.2);
    border-bottom-color: #002FA7;
}

.field-card:hover:before {
    transform: scaleX(1);
}

.field-icon {
    font-size: 48px;
    margin-bottom: 20px;
    display: inline-block;
    width: 80px;
    height: 80px;
    line-height: 80px;
    background: linear-gradient(135deg, #002FA7 0%, #1e40af 100%);
    color: #fff;
    border-radius: 50%;
    transition: all 0.3s;
}

.field-card:hover .field-icon {
    transform: rotateY(360deg);
}

.field-card h3 {
    font-size: 24px;
    color: #002FA7;
    margin-bottom: 15px;
}

.field-card p {
    color: #666;
    line-height: 1.8;
}

/* 研究报告 */
.research-reports {
    padding: 80px 0;
    position: relative;
}

.reports-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.report-card {
    background: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: all 0.3s;
    border-left: 3px solid transparent;
    position: relative;
    overflow: hidden;
}

.report-card:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: #a42227;
    transform: scaleY(0);
    transition: transform 0.3s;
}

.report-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 47, 167, 0.15);
    border-left-color: #002FA7;
}

.report-card:hover:before {
    transform: scaleY(1);
}

.report-meta {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
}

.report-date {
    background: #002FA7;
    color: #fff;
    padding: 5px 15px;
    border-radius: 5px;
    font-size: 14px;
    font-weight: 500;
}

.report-category {
    background: #e6f0ff;
    color: #002FA7;
    padding: 5px 15px;
    border-radius: 5px;
    font-size: 14px;
}

.report-card h3 {
    font-size: 20px;
    color: #333;
    margin-bottom: 15px;
    line-height: 1.5;
    transition: color 0.3s;
}

.report-card:hover h3 {
    color: #002FA7;
}

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

.reports-note {
    text-align: center;
    color: #999;
    font-style: italic;
}

/* 研究服务 */
.research-services {
    padding: 80px 0;
    background: #f7fafc;
}

.research-services .services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.research-services .service-item {
    background: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: all 0.3s;
    border-top: 3px solid transparent;
}

.research-services .service-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 47, 167, 0.15);
    border-top-color: #a42227;
}

.research-services .service-item h3 {
    font-size: 20px;
    color: #002FA7;
    margin-bottom: 15px;
    position: relative;
    padding-bottom: 10px;
}

.research-services .service-item h3:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: #a42227;
    transition: width 0.3s;
}

.research-services .service-item:hover h3:after {
    width: 50px;
}

.research-services .service-item p {
    color: #666;
    line-height: 1.8;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .reports-list {
        grid-template-columns: 1fr;
    }
    
    .fields-grid,
    .research-services .services-grid {
        grid-template-columns: 1fr;
    }
    
    .field-card:before {
        display: none;
    }
}