/* PaperTree third-party product guide — scoped to this page. */
.papertree-page .purchase-shell{max-width:1100px}
.papertree-product-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.papertree-product-card{min-width:0;padding:20px;border:1px solid var(--line);border-radius:var(--r-lg);background:#fff;box-shadow:0 8px 24px rgba(20,42,56,.045)}
.papertree-product-card h3{margin:8px 0;color:var(--brand2);font-size:20px}
.papertree-product-card .purchase-qr-layout{grid-template-columns:240px minmax(0,1fr);gap:18px;align-items:start}
.papertree-product-card .purchase-qr-wrap{width:240px}
.papertree-qr{display:block;width:220px;height:220px;object-fit:contain;background:#fff}
.papertree-product-card .purchase-qr-copy p{margin:0;color:var(--soft);font-size:13px;line-height:1.7}
.papertree-product-card .purchase-action-buttons{align-items:stretch}
.papertree-product-card .purchase-action-buttons .btn{min-height:44px;white-space:normal;text-align:center}
.papertree-product-card .purchase-copy-status{min-height:36px;line-height:1.5}
@media(max-width:1040px){.papertree-product-grid{grid-template-columns:1fr}}
@media(max-width:820px){.papertree-product-card{padding:18px}.papertree-product-card .purchase-qr-copy h3{margin-top:8px}.papertree-product-card .purchase-action-buttons{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:520px){.papertree-product-card{padding:16px}.papertree-product-card .purchase-action-buttons{grid-template-columns:1fr}}