/**
 * 产品页面专用样式
 */

/* 产品英雄区域 */
.product-hero {
    padding: 150px 0 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white);
    text-align: center;
}

.product-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 20px;
}

.product-title {
    font-size: 56px;
    font-weight: 800;
    margin-bottom: 15px;
}

.product-subtitle {
    font-size: 24px;
    margin-bottom: 20px;
    opacity: 0.9;
}

.product-description {
    font-size: 18px;
    opacity: 0.9;
    line-height: 1.8;
    margin-bottom: 40px;
}

.product-actions {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 30px;
}

.product-info {
    display: flex;
    justify-content: center;
    gap: 30px;
    font-size: 14px;
    opacity: 0.8;
}

/* 产品功能列表 */
.product-features {
    padding: 100px 0;
}

.features-list {
    display: grid;
    gap: 30px;
}

.feature-item {
    display: flex;
    gap: 30px;
    padding: 40px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.feature-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-xl);
}

.feature-item-icon {
    font-size: 56px;
    flex-shrink: 0;
}

.feature-item-content h3 {
    font-size: 24px;
    margin-bottom: 10px;
    color: var(--gray-900);
}

.feature-item-content p {
    color: var(--gray-600);
    line-height: 1.8;
}

/* 技术规格 */
.product-specs {
    padding: 100px 0;
    background: var(--gray-50);
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.spec-item {
    padding: 30px;
    background: var(--white);
    border-radius: var(--radius-lg);
    text-align: center;
}

.spec-label {
    font-size: 14px;
    color: var(--gray-500);
    margin-bottom: 10px;
}

.spec-value {
    font-size: 18px;
    font-weight: 700;
    color: var(--gray-900);
}

/* 下载区域 */
.product-download {
    padding: 100px 0;
}

.download-card {
    max-width: 800px;
    margin: 0 auto;
    padding: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-xl);
    color: var(--white);
    text-align: center;
}

.download-header h2 {
    font-size: 42px;
    margin-bottom: 10px;
}

.download-info {
    display: flex;
    justify-content: space-around;
    margin: 40px 0;
    padding: 30px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.version-badge {
    display: inline-block;
    padding: 5px 15px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    font-size: 12px;
    margin-bottom: 10px;
}

.version-number {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 5px;
}

.version-date {
    font-size: 14px;
    opacity: 0.8;
}

.download-stats {
    display: flex;
    gap: 40px;
}

.download-notice {
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    font-size: 14px;
    opacity: 0.9;
}

/* FAQ */
.product-faq {
    padding: 100px 0;
    background: var(--gray-50);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    border-radius: var(--radius-lg);
    margin-bottom: 15px;
    overflow: hidden;
}

.faq-question {
    padding: 25px;
    font-size: 18px;
    font-weight: 600;
    color: var(--gray-900);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.faq-question:hover {
    background: var(--gray-50);
}

.faq-icon {
    font-size: 24px;
    transition: var(--transition);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 25px 25px;
    color: var(--gray-600);
    line-height: 1.8;
}

/* 响应式 */
@media screen and (max-width: 768px) {
    .product-title {
        font-size: 36px;
    }
    
    .product-actions {
        flex-direction: column;
    }
    
    .product-info {
        flex-direction: column;
        gap: 10px;
    }
    
    .feature-item {
        flex-direction: column;
        text-align: center;
    }
    
    .specs-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .download-card {
        padding: 40px 20px;
    }
    
    .download-info {
        flex-direction: column;
        gap: 30px;
    }
}