/* Product section navigation, consistent with portfolio index. */
.product-nav{gap:0;counter-reset:product-section}
.product-nav::before{content:"Na tej stronie";font-size:11px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);padding:0 16px 20px}
.product-nav a{counter-increment:product-section;position:relative;display:grid;grid-template-columns:24px minmax(0,1fr);gap:12px;padding:18px 16px;font-size:14px;font-weight:600;line-height:1.5;color:var(--muted);border-bottom:1px solid var(--line);transition:color .2s,background-color .2s}
.product-nav a::before{content:counter(product-section,decimal-leading-zero);font-size:11px;font-weight:600;line-height:21px;color:var(--ghost);font-variant-numeric:tabular-nums}
.product-nav a::after{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--red);transform:scaleY(0);transition:transform .2s}
.product-nav a:hover,.product-nav a:focus-visible{color:var(--ink);background:#ffffff80}
.product-nav a[aria-current="location"]{color:var(--ink);background:var(--paper);border-bottom-color:transparent}
.product-nav a[aria-current="location"]::before{color:var(--red)}
.product-nav a[aria-current="location"]::after{transform:scaleY(1)}
@media(prefers-reduced-motion:reduce){.product-nav a,.product-nav a::after{transition:none}}