.page-header {
    background-color: #f8f9fa;
    padding: 80px 0;
    text-align: center;
    margin-bottom: 60px;
}

.page-header h1 {
    font-size: 48px;
    color: #333;
    margin-bottom: 20px;
}

.page-header p {
    font-size: 18px;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 筛选按钮 */
.case-filter {
    margin-bottom: 60px;
}

.filter-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 25px;
    border: 2px solid #0066cc;
    border-radius: 25px;
    background: transparent;
    color: #0066cc;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn.active,
.filter-btn:hover {
    background: #0066cc;
    color: white;
}

/* 案例卡片 */
.cases-grid {
    padding: 0 0 80px;
}

.case-card {
    display: flex;
    margin-bottom: 40px;
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.case-card:hover {
    transform: translateY(-5px);
}

.case-image {
    flex: 1;
    min-height: 300px;
    overflow: hidden;
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.case-content {
    flex: 1;
    padding: 40px;
}

.case-tag {
    display: inline-block;
    padding: 5px 15px;
    background: rgba(0, 102, 204, 0.1);
    color: #0066cc;
    border-radius: 15px;
    font-size: 14px;
    margin-bottom: 20px;
}

.case-content h3 {
    font-size: 24px;
    color: #333;
    margin-bottom: 15px;
}

.case-content p {
    font-size: 16px;
    color: #666;
    line-height: 1.6;
    margin-bottom: 20px;
}

.read-more {
    color: #0066cc;
    text-decoration: none;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
}

.read-more i {
    transition: transform 0.3s ease;
}

.read-more:hover i {
    transform: translateX(5px);
}

/* CTA部分 */
.cta-section {
    background-color: #0066cc;
    color: white;
    padding: 80px 0;
    text-align: center;
    margin-top: 60px;
}

.cta-section h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

.cta-section p {
    font-size: 18px;
    margin-bottom: 40px;
    opacity: 0.9;
}

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

.primary-btn {
    background-color: white;
    color: #0066cc;
    padding: 12px 30px;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.secondary-btn {
    background-color: transparent;
    color: white;
    padding: 12px 30px;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 500;
    border: 2px solid white;
    cursor: pointer;
    transition: all 0.3s ease;
}

.primary-btn:hover {
    background-color: #f8f9fa;
    transform: translateY(-2px);
}

.secondary-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .case-card {
        flex-direction: column;
    }

    .case-image {
        min-height: 200px;
    }

    .case-content {
        padding: 30px;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .page-header {
        padding: 60px 0;
    }

    .page-header h1 {
        font-size: 36px;
    }
}