/* ===== 产品介绍页面样式 ===== */

/* ===== 产品概览统计 ===== */
.products-overview {
    padding: var(--spacing-5xl) var(--spacing-lg);
    background: linear-gradient(180deg, var(--color-light) 0%, var(--color-white) 100%);
}

.overview-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-2xl);
}

.stat-item {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-3xl) var(--spacing-2xl);
    text-align: center;
    box-shadow: var(--shadow-light);
    transition: all var(--transition-base);
    border-top: 4px solid var(--color-primary);
}

.stat-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-medium);
}

.stat-number {
    font-size: 48px;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin-bottom: var(--spacing-base);
}

.stat-item p {
    font-size: var(--font-size-base);
    color: var(--color-gray);
    font-weight: var(--font-weight-semibold);
}

/* ===== 产品详情展示 ===== */
.products-showcase {
    padding: var(--spacing-5xl) var(--spacing-lg);
    background: var(--color-white);
}

.product-detail-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
    margin-bottom: var(--spacing-5xl);
    animation: fadeInUp 0.8s ease-out both;
}

.product-detail-card:nth-child(1) { animation-delay: 0.1s; }
.product-detail-card:nth-child(2) { animation-delay: 0.2s; }
.product-detail-card:nth-child(3) { animation-delay: 0.3s; }
.product-detail-card:nth-child(4) { animation-delay: 0.4s; }

.product-detail-card.product-reverse {
    direction: rtl;
}

.product-detail-card.product-reverse > * {
    direction: ltr;
}

.product-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-image-placeholder {
    width: 100%;
    max-width: 480px;
    height: 360px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, #e2e6ea 0%, #cfd6dd 100%);
    box-shadow: 0 20px 60px rgba(0, 102, 204, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #6b7280;
    font-size: 18px;
    font-weight: var(--font-weight-semibold);
    letter-spacing: 1px;
}

.product-image-link {
    display: block;
    width: 100%;
    text-decoration: none;
}

.product-content {
    position: relative;
}

.product-header {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
    align-items: flex-start;
}

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

.product-title-group h2 {
    font-size: 32px;
    color: var(--color-dark);
    margin-bottom: var(--spacing-base);
    font-weight: var(--font-weight-bold);
}

.product-subtitle {
    font-size: 16px;
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
}

.product-intro {
    font-size: 16px;
    color: var(--color-gray);
    line-height: 1.8;
    margin-bottom: var(--spacing-2xl);
}

.product-features {
    margin-bottom: var(--spacing-2xl);
}

.product-features h3 {
    font-size: 18px;
    color: var(--color-dark);
    margin-bottom: var(--spacing-lg);
    font-weight: var(--font-weight-bold);
}

.features-list {
    list-style: none;
    padding: 0;
}

.features-list li {
    padding: 12px 0;
    padding-left: 28px;
    position: relative;
    color: var(--color-gray);
    font-size: 15px;
    line-height: 1.6;
}

.features-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
    font-size: 16px;
}

.product-benefits {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    grid-column: 1 / -1;
}

.benefit-item {
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.08) 0%, rgba(0, 180, 216, 0.08) 100%);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--color-primary);
    transition: all var(--transition-base);
}

.benefit-item:hover {
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.12) 0%, rgba(0, 180, 216, 0.12) 100%);
    transform: translateX(8px);
}

.benefit-icon {
    font-size: 28px;
    flex-shrink: 0;
}

.benefit-item h4 {
    font-size: 16px;
    color: var(--color-dark);
    margin-bottom: 4px;
    font-weight: var(--font-weight-bold);
}

.benefit-item p {
    font-size: 14px;
    color: var(--color-gray);
    margin: 0;
}

/* ===== 产品对比表 ===== */
.products-comparison {
    padding: var(--spacing-5xl) var(--spacing-lg);
    background: var(--color-light);
}

.products-comparison .section-header {
    text-align: center;
    margin-bottom: var(--spacing-4xl);
}

.products-comparison h2 {
    font-size: var(--font-size-h2);
    color: var(--color-dark);
    margin-bottom: var(--spacing-base);
    font-weight: var(--font-weight-bold);
}

.products-comparison > .container > .section-header p {
    font-size: 18px;
    color: var(--color-gray);
    font-weight: var(--font-weight-semibold);
}

.comparison-table {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-light);
}

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

.comparison-table th {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    color: var(--color-white);
    padding: var(--spacing-2xl);
    text-align: center;
    font-weight: var(--font-weight-bold);
}

.comparison-table td {
    padding: var(--spacing-xl) var(--spacing-2xl);
    text-align: center;
    border-bottom: 1px solid var(--color-light);
    color: var(--color-gray);
    font-size: 15px;
}

.comparison-table td:first-child {
    text-align: left;
    font-weight: var(--font-weight-semibold);
    color: var(--color-dark);
}

.comparison-table tbody tr:hover {
    background-color: rgba(0, 102, 204, 0.05);
}

.comparison-table tbody tr:last-child td {
    border-bottom: none;
}

/* ===== 响应式设计 ===== */
@media (max-width: 1024px) {
    .overview-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-2xl);
    }

    .product-detail-card {
        grid-template-columns: 1fr;
        gap: var(--spacing-3xl);
    }

    .product-detail-card.product-reverse {
        direction: ltr;
    }

    .product-image-placeholder {
        height: 300px;
    }

    .product-benefits {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .products-overview {
        padding: var(--spacing-3xl) var(--spacing-base);
    }

    .overview-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }

    .stat-item {
        padding: var(--spacing-2xl) var(--spacing-base);
    }

    .stat-number {
        font-size: 36px;
    }

    .products-showcase {
        padding: var(--spacing-3xl) var(--spacing-base);
    }

    .product-detail-card {
        margin-bottom: var(--spacing-3xl);
    }

    .product-header {
        gap: var(--spacing-base);
    }

    .product-title-group h2 {
        font-size: 24px;
    }

    .product-subtitle {
        font-size: 14px;
    }

    .product-intro {
        font-size: 15px;
    }

    .product-benefits {
        gap: var(--spacing-base);
    }

    .benefit-item {
        padding: var(--spacing-base);
    }

    .product-image-placeholder {
        height: 240px;
    }

    .comparison-table th,
    .comparison-table td {
        padding: var(--spacing-lg);
        font-size: 13px;
    }

    .comparison-table th {
        padding: var(--spacing-lg);
    }

    .comparison-table td:first-child {
        text-align: left;
        font-size: 12px;
    }

    .products-comparison {
        padding: var(--spacing-3xl) var(--spacing-base);
    }

    .products-comparison h2 {
        font-size: 28px;
    }
}