/* 合作通道头部 */
.cooperation-header {
    height: 350px;
    background: linear-gradient(135deg, #1a5276 0%, #2980b9 100%);
    background-size: cover;
    background-position: center;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
    padding: 0;
}

.cooperation-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.3));
    z-index: 1;
}

.cooperation-header .container {
    position: relative;
    z-index: 2;
    margin-top: 40px;
}

.cooperation-header h1 {
    font-size: 2.8rem;
    margin-bottom: 20px;
    animation: fadeInUp 1s ease;
}

.cooperation-header p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    animation: fadeInUp 1s ease 0.2s;
    animation-fill-mode: both;
}

/* 动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
        -webkit-transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
        -webkit-transform: translateY(0);
    }
}

@-webkit-keyframes fadeInUp {
    from {
        opacity: 0;
        -webkit-transform: translateY(20px);
    }
    to {
        opacity: 1;
        -webkit-transform: translateY(0);
    }
}

/* 动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
        -webkit-transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
        -webkit-transform: translateY(0);
    }
}

@-webkit-keyframes fadeInUp {
    from {
        opacity: 0;
        -webkit-transform: translateY(20px);
    }
    to {
        opacity: 1;
        -webkit-transform: translateY(0);
    }
}

/* 合作优势 */
.advantages-section {
    padding: 80px 0;
    background-color: #f8f9fa;
}

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

.advantage-card {
    background-color: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.advantage-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.advantage-icon {
    width: 80px;
    height: 80px;
    background-color: #1a5276;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2rem;
}

.advantage-card h3 {
    color: #1a5276;
    margin-bottom: 15px;
}

.advantage-card p {
    color: #666;
    line-height: 1.6;
}

/* 合作项目 */
.coop-projects-section {
    padding: 80px 0;
}

.projects-table-container {
    overflow-x: auto;
    margin-top: 50px;
}

.projects-table {
    width: 100%;
    border-collapse: collapse;
}

.projects-table th,
.projects-table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

.projects-table th {
    background-color: #1a5276;
    color: white;
}

.projects-table tr:hover {
    background-color: #f5f5f5;
}

.projects-table .commission {
    color: #e74c3c;
    font-weight: bold;
}

.view-project-btn {
    background-color: #1a5276;
    color: white;
    border: none;
    padding: 8px 12px;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.view-project-btn:hover {
    background-color: #154360;
}

/* 合作流程 */
.process-section {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.process-steps {
    display: flex;
    justify-content: space-between;
    margin-top: 50px;
    position: relative;
}

.process-steps::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #ddd;
    z-index: 1;
}

.process-step {
    text-align: center;
    position: relative;
    z-index: 2;
    flex: 1;
    padding: 0 15px;
}

.step-number {
    width: 80px;
    height: 80px;
    background-color: #1a5276;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.8rem;
    font-weight: bold;
}

.process-step h3 {
    color: #1a5276;
    margin-bottom: 15px;
}

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

/* 合作申请 */
.apply-section {
    padding: 80px 0;
}

.apply-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 50px;
    align-items: center;
}

.apply-text h2 {
    color: #1a5276;
    margin-bottom: 20px;
}

.apply-text p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 30px;
}

.apply-requirements {
    margin-left: 20px;
}

.apply-requirements li {
    margin-bottom: 10px;
    color: #666;
    line-height: 1.6;
    position: relative;
    padding-left: 25px;
}

.apply-requirements li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #1a5276;
    font-weight: bold;
}

.apply-form-container {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    padding: 30px;
}

.apply-form h3 {
    color: #1a5276;
    margin-bottom: 20px;
    text-align: center;
}

.apply-form .form-group {
    margin-bottom: 20px;
}

.apply-form label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
    color: #333;
}

.apply-form input,
.apply-form select,
.apply-form textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.apply-form textarea {
    resize: vertical;
}

.apply-form button {
    width: 100%;
    padding: 12px;
    font-size: 1rem;
    margin-top: 10px;
}

/* 项目详情模态框 */
.project-detail-content h3 {
    color: #1a5276;
    margin-bottom: 20px;
}

.project-detail-info {
    margin-bottom: 20px;
}

.project-detail-info p {
    margin-bottom: 10px;
}

.project-detail-info strong {
    color: #1a5276;
}

.commission-highlight {
    color: #e74c3c;
    font-weight: bold;
    font-size: 1.2rem;
    margin: 20px 0;
    padding: 10px;
    background-color: #f8f9fa;
    border-left: 4px solid #e74c3c;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .process-steps {
        flex-wrap: wrap;
    }
    
    .process-steps::before {
        display: none;
    }
    
    .process-step {
        flex: 0 0 50%;
        margin-bottom: 30px;
    }
    
    .apply-content {
        grid-template-columns: 1fr;
    }
    
    .apply-text {
        margin-bottom: 30px;
    }
}

@media (max-width: 768px) {
    .cooperation-header {
        padding: 100px 0 50px;
    }
    
    .cooperation-header h1 {
        font-size: 2rem;
    }
    
    .process-step {
        flex: 0 0 100%;
    }
}

@media (max-width: 576px) {
    .projects-table th,
    .projects-table td {
        padding: 10px;
    }
}