/* 产品中心 */
.product-tabs { display: flex; gap: 12px; justify-content: center; margin-bottom: 48px; flex-wrap: wrap; }
.product-tab {
    padding: 10px 24px; border-radius: 24px; cursor: pointer;
    background: var(--bg-card); border: 1px solid var(--border);
    color: var(--text-secondary); font-size: 14px; font-weight: 500;
    transition: all var(--transition);
}
.product-tab:hover, .product-tab.active {
    background: var(--accent-glow); border-color: var(--accent); color: var(--accent);
}
.product-detail {
    display: grid; grid-template-columns: 1fr 1.2fr; gap: 48px;
    align-items: start; padding: 32px;
    background: var(--bg-card); border-radius: var(--radius);
    border: 1px solid var(--border);
}
.product-detail img { width: 100%; height: 300px; object-fit: cover; border-radius: var(--radius-sm); }
.product-detail-img {
    height: 300px; background: var(--bg-secondary); border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center;
    font-size: 80px; overflow: hidden;
}
.product-detail-info h3 { font-size: 24px; margin-bottom: 16px; }
.product-detail-info p { color: var(--text-secondary); line-height: 1.8; margin-bottom: 16px; }
.spec-table { width: 100%; border-collapse: collapse; }
.spec-table td { padding: 10px 16px; border-bottom: 1px solid var(--border); font-size: 14px; }
.spec-table td:first-child { color: var(--text-muted); width: 120px; }

@media (max-width: 768px) {
    .product-tabs { gap: 8px; margin-bottom: 32px; }
    .product-tab { padding: 8px 16px; font-size: 13px; }
    .product-detail { grid-template-columns: 1fr; gap: 24px; padding: 20px; }
    .product-detail-img { height: 200px; font-size: 56px; }
    .product-detail-img img { height: 200px; }
    .product-detail-info h3 { font-size: 20px; }
    .spec-table td { padding: 8px 12px; font-size: 13px; }
    .spec-table td:first-child { width: 100px; }
}

@media (max-width: 480px) {
    .product-tabs { gap: 6px; }
    .product-tab { padding: 7px 12px; font-size: 12px; border-radius: 18px; }
    .product-detail { padding: 16px; gap: 16px; }
    .product-detail-img { height: 160px; font-size: 44px; }
    .product-detail-info h3 { font-size: 17px; margin-bottom: 12px; }
    .product-detail-info p { font-size: 13px; line-height: 1.7; }
    .spec-table td { padding: 7px 10px; font-size: 12px; }
    .spec-table td:first-child { width: 90px; }
}