/* 成果页面专用样式 */

/* 项目影响力部分 */
.impact-section {
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.impact-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.stat-card {
    background: #fff;
    border-radius: 20px;
    padding: 40px 20px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    position: relative;
    z-index: 1;
    overflow: hidden;
}

.stat-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(44, 90, 160, 0.15);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, #2c5aa0, #4a7fc1);
    z-index: 2;
}

.stat-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #e9f2ff, #f5f9ff);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.stat-icon i {
    font-size: 2.5rem;
    color: #2c5aa0;
    background: linear-gradient(135deg, #2c5aa0, #4a7fc1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-number {
    font-size: 3.5rem;
    font-weight: 700;
    color: #2c5aa0;
    margin-bottom: 10px;
    line-height: 1;
}

.stat-label {
    font-size: 1.2rem;
    color: #555;
    font-weight: 500;
}

/* 核心成果时间线 */
.achievements-section {
    padding: 100px 0;
    position: relative;
    background: #f9fbff;
}

.section-title {
    text-align: center;
    font-size: 2.8rem;
    color: #2c5aa0;
    margin-bottom: 60px;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, #2c5aa0, #4a7fc1);
    border-radius: 2px;
}

.achievements-timeline {
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
}

.achievements-timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom, #2c5aa0, #4a7fc1);
    border-radius: 2px;
}

.timeline-item {
    display: flex;
    justify-content: flex-start;
    margin-bottom: 80px;
    position: relative;
    width: 100%;
}

.timeline-item:nth-child(even) {
    justify-content: flex-end;
}

.timeline-date {
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, #2c5aa0, #4a7fc1);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    box-shadow: 0 5px 15px rgba(44, 90, 160, 0.3);
}

.timeline-date span {
    font-size: 1.2rem;
    line-height: 1.2;
}

.timeline-date span:first-child {
    font-size: 1.4rem;
}

.timeline-content {
    width: calc(50% - 80px);
    background: white;
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    position: relative;
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-right: 80px;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: 80px;
}

.timeline-content::before {
    content: '';
    position: absolute;
    top: 30px;
    width: 30px;
    height: 30px;
    background: white;
    transform: rotate(45deg);
    box-shadow: 5px -5px 10px rgba(0, 0, 0, 0.05);
}

.timeline-item:nth-child(odd) .timeline-content::before {
    right: -15px;
}

.timeline-item:nth-child(even) .timeline-content::before {
    left: -15px;
}

.timeline-content h3 {
    color: #2c5aa0;
    font-size: 1.6rem;
    margin-bottom: 15px;
}

.timeline-content p {
    color: #555;
    line-height: 1.7;
    margin-bottom: 20px;
}

.timeline-image {
    width: 100%;
    height: 200px;
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 20px;
}

.timeline-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.timeline-actions {
    display: flex;
    gap: 15px;
}

/* 研究成果部分 */
.research-section {
    padding: 100px 0;
    position: relative;
}

.research-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.research-card {
    background: white;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.research-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(44, 90, 160, 0.15);
}

.research-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #e9f2ff, #f5f9ff);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.research-icon i {
    font-size: 1.8rem;
    color: #2c5aa0;
}

.research-card h3 {
    color: #2c5aa0;
    font-size: 1.4rem;
    margin-bottom: 10px;
    line-height: 1.4;
}

.research-card p {
    color: #666;
    margin-bottom: 15px;
    line-height: 1.6;
}

.research-abstract {
    background: #f9fbff;
    padding: 15px;
    border-radius: 10px;
    border-left: 4px solid #2c5aa0;
    font-style: italic;
    color: #555;
    margin-bottom: 20px;
    flex-grow: 1;
}

.research-actions {
    display: flex;
    gap: 15px;
    margin-top: auto;
}

/* 合作伙伴部分 */
.partners-section {
    padding: 100px 0;
    background: #f9fbff;
    position: relative;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.partner-card {
    background: white;
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
}

.partner-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(44, 90, 160, 0.15);
}

.partner-logo {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #e9f2ff, #f5f9ff);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.partner-logo i {
    font-size: 2.5rem;
    color: #2c5aa0;
}

.partner-card h3 {
    color: #2c5aa0;
    font-size: 1.4rem;
    margin-bottom: 10px;
}

.partner-card p {
    color: #666;
}

.partners-cta {
    text-align: center;
    margin-top: 60px;
    padding: 40px;
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.partners-cta h3 {
    color: #2c5aa0;
    font-size: 1.8rem;
    margin-bottom: 15px;
}

.partners-cta p {
    color: #666;
    margin-bottom: 25px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .impact-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .research-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .timeline-item {
        flex-direction: column;
        align-items: center;
        margin-bottom: 100px;
    }
    
    .timeline-date {
        position: relative;
        left: 0;
        transform: none;
        margin-bottom: 30px;
    }
    
    .timeline-content {
        width: 100%;
        margin: 0 !important;
    }
    
    .timeline-content::before {
        display: none;
    }
    
    .achievements-timeline::before {
        left: 50%;
        height: calc(100% - 120px);
        top: 120px;
    }
}

@media (max-width: 768px) {
    .impact-stats {
        grid-template-columns: 1fr;
    }
    
    .research-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-card {
        padding: 30px 20px;
    }
    
    .stat-icon {
        width: 70px;
        height: 70px;
    }
    
    .stat-number {
        font-size: 3rem;
    }
    
    .section-title {
        font-size: 2.2rem;
    }
    
    .timeline-date {
        width: 100px;
        height: 100px;
    }
    
    .timeline-date span:first-child {
        font-size: 1.2rem;
    }
    
    .timeline-content h3 {
        font-size: 1.4rem;
    }
}

@media (max-width: 480px) {
    .stat-card {
        padding: 25px 15px;
    }
    
    .stat-icon {
        width: 60px;
        height: 60px;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .timeline-content {
        padding: 20px;
    }
    
    .timeline-content h3 {
        font-size: 1.3rem;
    }
    
    .timeline-image {
        height: 150px;
    }
    
    .research-card {
        padding: 20px;
    }
    
    .research-card h3 {
        font-size: 1.3rem;
    }
    
    .partner-card {
        padding: 20px;
    }
    
    .partners-cta {
        padding: 30px 20px;
    }
    
    .partners-cta h3 {
        font-size: 1.5rem;
    }
}