/* ========================================
   辅材云平台官网 - 产品功能页样式
   ======================================== */

/* 页面标题 */
.page-header {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    padding: 120px 0 60px;
    text-align: center;
    color: var(--white);
}

.page-header h1 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 20px;
}

.page-slogan {
    font-size: 20px;
    line-height: 1.8;
    font-weight: 500;
    margin-bottom: 16px;
}

.page-slogan .highlight {
    background: rgba(255, 255, 255, 0.2);
    padding: 4px 12px;
    border-radius: 4px;
    font-weight: 600;
}

.page-subtitle {
    font-size: 16px;
    opacity: 0.85;
}

/* 功能模块 */
.feature-block {
    display: flex;
    align-items: center;
    gap: 60px;
    padding: 60px 0;
    border-bottom: 1px solid var(--border-color);
}

.feature-block:last-child {
    border-bottom: none;
}

.feature-block.reverse {
    flex-direction: row-reverse;
}

.feature-content {
    flex: 1;
}

.feature-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 20px;
    color: var(--white);
    font-size: 36px;
    margin-bottom: 24px;
}

.feature-content h2 {
    font-size: 28px;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 16px;
}

.feature-desc {
    font-size: 16px;
    color: var(--text-light);
    margin-bottom: 24px;
    line-height: 1.8;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    font-size: 15px;
    color: var(--text-color);
}

.feature-list li i {
    color: var(--primary-color);
    font-size: 16px;
}

.feature-image {
    flex: 1;
    max-width: 500px;
}

/* 图片占位符 */
.image-placeholder {
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    border-radius: var(--radius-md);
    padding: 80px 40px;
    text-align: center;
    border: 2px dashed var(--border-color);
}

.image-placeholder i {
    font-size: 64px;
    color: var(--primary-color);
    margin-bottom: 16px;
    display: block;
}

.image-placeholder span {
    font-size: 14px;
    color: var(--text-light);
}

/* ========================================
   响应式设计
   ======================================== */

@media (max-width: 992px) {
    .feature-block {
        gap: 40px;
    }
    
    .feature-image {
        max-width: 400px;
    }
}

@media (max-width: 768px) {
    .page-header {
        padding: 100px 0 40px;
    }
    
    .page-header h1 {
        font-size: 32px;
    }
    
    .feature-block,
    .feature-block.reverse {
        flex-direction: column;
        padding: 40px 0;
    }
    
    .feature-image {
        max-width: 100%;
        order: -1;
    }
    
    .feature-content h2 {
        font-size: 24px;
    }
    
    .image-placeholder {
        padding: 60px 30px;
    }
    
    .image-placeholder i {
        font-size: 48px;
    }
}