/* Product pages share the site's blue, white and rounded-card visual language. */
.product-site .header .nav { gap: 24px; }
.product-site .header .logo { flex-shrink: 0; }
.product-site .header .logo blockquote { margin-left: 16px; font-size: 14px; color: #64748b; }
.product-site .header .logo blockquote footer { display: none; }
.product-site .nav-links { gap: 26px; }
.product-intro { padding: 64px 0; background: #f6f8fc; scroll-margin-top: 100px; }
.hero.ppt-updates { padding: 48px 0 64px; }
.ppt-updates > h2 { margin-bottom: 24px; font-size: 1.6rem; color: #1e40af; }
.product-card { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: 40px; align-items: center; padding: 36px; background: #fff; border: 1px solid #e8edf5; border-radius: 16px; box-shadow: 0 12px 32px rgba(16,24,40,.05); }
.product-card > * { min-width: 0; }
.product-card img { display: block; max-width: 100%; height: auto; margin: auto; border-radius: 10px; }
.product-card h2 { font-size: clamp(1.6rem, 3vw, 2.35rem); line-height: 1.35; color: #1e40af; margin: 12px 0 18px; }
.product-card p { color: #64748b; margin: 14px 0; }
.product-card ul { padding-left: 22px; color: #475569; }
.product-card li { margin: 10px 0; }
.product-label { color: #2563eb; font-size: 14px; font-weight: 600; letter-spacing: .06em; }
.product-actions { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; margin-top: 24px; }
.product-link { display: inline-block; padding: 11px 22px; color: #fff; background: #2563eb; border-radius: 8px; font-weight: 600; text-decoration: none; }
.product-link:hover { background: #1e40af; }
.product-link:focus-visible { outline: 3px solid #60a5fa; outline-offset: 4px; }
.product-status { display: inline-block; padding: 7px 12px; border-radius: 6px; background: #f1f5f9; color: #64748b; font-size: 14px; }
.software-catalog { padding: 132px 24px 64px; }
.catalog-heading { text-align: center; margin: 0 auto 40px; }
.catalog-heading h1 { font-size: clamp(2rem, 4vw, 3rem); color: #172033; }
.catalog-heading p { margin-top: 12px; color: #64748b; }
.software-catalog .product-card { margin-bottom: 28px; scroll-margin-top: 110px; }
.software-catalog .product-card h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
.product-gallery { display: grid; gap: 18px; }
.product-gallery img { max-height: 400px; object-fit: contain; }
.download-section { margin: 0 auto 52px; max-width: 1100px; padding: 0 24px; text-align: left; scroll-margin-top: 105px; }
.download-section h2, .youjing-pricing h2 { color: #1e40af; font-size: 2rem; margin-bottom: 14px; }
.download-section > p { color: #64748b; }
.download-items { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; margin-top: 24px; }
.download-item { display: flex; flex-direction: column; min-width: 0; padding: 26px; border: 1px solid #e8edf5; border-radius: 12px; background: #fff; overflow-wrap: anywhere; }
.download-item .product-actions { margin-top: auto; padding-top: 16px; }
.download-item h3 { color: #172033; margin-bottom: 12px; }
.download-item p { color: #64748b; margin: 12px 0; }
.youjing-pricing { padding-top: 36px; border-top: 1px solid #e8edf5; margin-bottom: 48px; scroll-margin-top: 105px; }
.youjing-pricing > p { color: #64748b; margin: 12px 0 24px; }
.youjing-plans { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 16px; }
.youjing-plan { padding: 26px 16px; text-align: center; border: 1px solid #e8edf5; border-radius: 12px; background: #fff; box-shadow: 0 8px 24px rgba(16,24,40,.05); }
.youjing-plan h3 { font-size: 1.15rem; color: #172033; }
.youjing-plan .plan-duration { color: #64748b; margin: 12px 0; }
.youjing-plan .plan-price { font-size: 2.3rem; font-weight: 700; color: #2563eb; margin: 18px 0; }
.youjing-plan .product-link { padding: 10px 14px; font-size: 14px; }
#youjing-contact { scroll-margin-top: 105px; padding: 24px; margin-top: 24px; border-radius: 12px; background: #f6f8fc; }
#youjing-contact p { margin: 12px 0; }
#youjing-contact img { width: 140px; max-width: 100%; height: auto; margin: 12px; }
@media (max-width: 1100px) { .youjing-plans { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 900px) {
    .product-site .header { position: static; }
    .product-site .header .logo blockquote { display: none; }
    .product-site .header .nav { flex-direction: column; align-items: flex-start; gap: 12px; padding: 16px 0; }
    .product-site .header .nav-links { display: flex; position: static; flex-direction: row; flex-wrap: wrap; gap: 10px 20px; border: 0; box-shadow: none; }
    .product-site .hero { padding-top: 48px; }
    .software-catalog { padding-top: 36px; }
    .product-site .buy-container { margin-top: 0; }
    .product-card { gap: 24px; padding: 24px; }
}
@media (max-width: 640px) {
    .product-card { grid-template-columns: minmax(0, 1fr); padding: 22px; }
    .product-card > img { max-width: 360px; width: 100%; }
    .product-intro { padding: 36px 0; }
    .software-catalog { padding-left: 16px; padding-right: 16px; }
    .download-items, .youjing-plans { grid-template-columns: minmax(0, 1fr); }
    .product-site .pricing-grid { grid-template-columns: minmax(0, 1fr); }
    .product-site .card.recommended { transform: none; }
}

.product-card > .youjing-cover { width: 100%; max-width: 360px; height: auto; }