:root{--accent:#2563eb;--bg:#f8fafc;--card:#fff;--ink:#0f172a;
  --mute:#64748b;--bdr:#e2e8f0;--ok:#16a34a}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
     color:var(--ink);background:var(--bg);line-height:1.55}
a{color:var(--accent)}
.wrap{max-width:72rem;margin:0 auto;padding:0 1.25rem}
header.shop{display:flex;align-items:center;justify-content:space-between;
            padding:.85rem 1.25rem;background:var(--card);
            border-bottom:1px solid var(--bdr);position:sticky;top:0;z-index:5}
header.shop .brand{font-weight:700;font-size:1.1rem;color:var(--ink);text-decoration:none}
header.shop nav a{margin-left:1rem;color:var(--mute);text-decoration:none;font-size:.95rem}
header.shop nav a:hover{color:var(--ink)}
header.shop nav a.active{color:var(--ink);font-weight:600}
.cart-btn{position:relative;border:1px solid var(--bdr);background:var(--card);
          padding:.45rem .75rem;border-radius:.5rem;cursor:pointer;
          text-decoration:none;color:var(--ink);font-size:.9rem;margin-left:1rem}
.cart-btn .badge{position:absolute;top:-.4rem;right:-.4rem;background:var(--accent);
                 color:#fff;border-radius:1rem;padding:.05rem .4rem;font-size:.7rem;
                 min-width:1.1rem;text-align:center}
footer.shop{margin-top:3rem;padding:1.5rem 0;color:var(--mute);text-align:center;
            font-size:.85rem;border-top:1px solid var(--bdr)}
.crumbs{font-size:.85rem;color:var(--mute);margin:1.25rem 0 .5rem}
.crumbs a{color:var(--mute)}
h1{margin:.5rem 0 1rem;font-size:1.7rem}
h2{margin:1.5rem 0 .75rem;font-size:1.2rem}
.layout{display:grid;grid-template-columns:minmax(0,2fr) minmax(18rem,1fr);
        gap:2rem;margin-top:1rem}
@media (max-width:54rem){.layout{grid-template-columns:1fr}}
.product-hero{display:grid;grid-template-columns:minmax(12rem,16rem) minmax(0,1fr);
              gap:1.5rem;align-items:start;background:var(--card);
              border:1px solid var(--bdr);border-radius:.75rem;padding:1.25rem}
@media (max-width:42rem){.product-hero{grid-template-columns:1fr}}
.product-art{aspect-ratio:1.2/1;border-radius:.5rem;display:flex;
             align-items:center;justify-content:center;color:#fff;
             font-weight:700;font-size:1.5rem;text-align:center;padding:1rem}
.product-meta h1{margin:0 0 .2rem;font-size:1.65rem}
.product-sku{margin:0 0 .5rem;color:var(--mute);font-size:.9rem}
.product-sku .sku{font-size:.9rem}
.product-meta .tagline{color:var(--mute);margin:.25rem 0 1rem}
.price{font-size:1.6rem;font-weight:700}
.price .vat{font-size:.85rem;font-weight:400;color:var(--mute);margin-left:.5rem}
.btn{display:inline-block;padding:.6rem 1.1rem;border-radius:.5rem;border:0;
     cursor:pointer;font-weight:600;background:var(--accent);color:#fff;
     text-decoration:none;font:inherit}
.btn:disabled{opacity:.6}
.btn.added{background:var(--ok)}
.btn.ghost{background:transparent;color:var(--accent);border:1px solid var(--accent)}
.btn.danger{background:#dc2626}
.dpf-featured-tools{background:var(--card);border:1px solid var(--bdr);
                    padding:1rem 1.25rem;border-radius:.75rem;
                    position:sticky;top:5rem}
.dpf-featured-tools h3{margin:0 0 .5rem;font-size:1rem}
.dpf-featured-tools ul{padding-left:1.1rem;margin:0}
.dpf-featured-tools li{margin:.2rem 0}
aside .dpf-featured-tools + .dpf-featured-tools{margin-top:1rem}
.dpf-featured-tools.nav-sidebar ul{list-style:none;padding:0}
.dpf-featured-tools.nav-sidebar li{margin:.4rem 0;line-height:1.35}
.dpf-featured-tools.nav-sidebar a.active{font-weight:600;color:var(--ink)}
.product-desc,.editions,.article{background:var(--card);border:1px solid var(--bdr);
                        border-radius:.75rem;padding:1.25rem;margin-top:1rem}
.article{margin-top:0}
.article p,.article ul,.article figure{margin-bottom:1.25rem}
.article figure{text-align:center}
.article figure img{max-width:100%;height:auto;border:1px solid var(--bdr);
                   border-radius:.5rem;padding:.25rem;background:#fff}
.article figcaption{margin-top:.5rem;font-size:.85rem;color:var(--mute)}
.article .flex{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
@media (max-width:42rem){.article .flex{grid-template-columns:1fr}}
.editions{padding:.5rem .75rem}
.editions table{width:100%;border-collapse:collapse;font-size:.92rem}
.editions th,.editions td{padding:.5rem .6rem;text-align:left;border-bottom:1px solid var(--bdr)}
.editions tr:last-child td{border-bottom:0}
.editions a{text-decoration:none}
.sku{color:var(--mute);font-size:.85rem;font-family:ui-monospace,Menlo,Consolas,monospace}
.related{margin-top:2rem}
.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(13rem,1fr));
              gap:1rem;margin-top:.5rem}
.related-card{background:var(--card);border:1px solid var(--bdr);border-radius:.75rem;
              padding:1rem;text-decoration:none;color:var(--ink);
              display:flex;flex-direction:column;gap:.5rem}
.related-card .swatch{height:.5rem;border-radius:.25rem}
.catalog{display:grid;grid-template-columns:repeat(auto-fill,minmax(15rem,1fr));
         gap:1rem;margin:1.5rem 0}
.catalog-card{background:var(--card);border:1px solid var(--bdr);border-radius:.75rem;
              overflow:hidden;text-decoration:none;color:var(--ink);
              display:flex;flex-direction:column;transition:transform .15s ease}
.catalog-card:hover{transform:translateY(-2px)}
.catalog-card .art{height:7rem;display:flex;align-items:center;justify-content:center;
                   color:#fff;font-weight:700;font-size:1.05rem;text-align:center;padding:.5rem}
.catalog-card .body{padding:.85rem 1rem;display:flex;flex-direction:column;gap:.4rem;flex:1}
.catalog-card .body .tag{color:var(--mute);font-size:.85rem;flex:1}
.catalog-card .body .row{display:flex;justify-content:space-between;align-items:center}
.catalog-card .body .price{font-size:1.05rem}
.topic-list{list-style:none;padding:0;margin:1rem 0 0}
.topic-list li{margin:.65rem 0;padding:.75rem 1rem;background:var(--card);
               border:1px solid var(--bdr);border-radius:.5rem}
.topic-list a{text-decoration:none;font-weight:500}
.shop-cta{margin-top:1.5rem;padding:1.25rem;background:var(--card);
          border:1px solid var(--bdr);border-radius:.75rem;display:flex;
          flex-wrap:wrap;align-items:center;justify-content:space-between;gap:1rem}
.cart-table{width:100%;border-collapse:collapse;background:var(--card);
            border:1px solid var(--bdr);border-radius:.75rem;overflow:hidden}
.cart-table th,.cart-table td{padding:.7rem .9rem;text-align:left;border-bottom:1px solid var(--bdr)}
.cart-table tr:last-child td{border-bottom:0}
.cart-summary{margin-top:1rem;padding:1rem 1.25rem;background:var(--card);
              border:1px solid var(--bdr);border-radius:.75rem;
              display:flex;justify-content:space-between;align-items:center;gap:1rem}
.cart-summary .totals{font-size:1.05rem}
.empty{padding:2rem;text-align:center;color:var(--mute);background:var(--card);
       border:1px dashed var(--bdr);border-radius:.75rem}
.checkout-form{background:var(--card);border:1px solid var(--bdr);border-radius:.75rem;
               padding:1.25rem;display:grid;gap:.85rem;max-width:32rem}
.checkout-form label{display:flex;flex-direction:column;gap:.25rem;font-size:.9rem;color:var(--mute)}
.checkout-form input{padding:.55rem .7rem;border:1px solid var(--bdr);border-radius:.4rem;font:inherit}
.notice{padding:1rem 1.25rem;background:#ecfdf5;border:1px solid #6ee7b7;
        border-radius:.5rem;color:#065f46}
.dpf-toast{position:fixed;bottom:1.5rem;right:1.5rem;background:var(--ink);
           color:#fff;padding:.7rem 1.1rem;border-radius:.5rem;font-size:.95rem;
           box-shadow:0 8px 24px rgba(0,0,0,.18);transform:translateY(1rem);
           opacity:0;pointer-events:none;
           transition:transform .25s ease, opacity .25s ease;z-index:50}
.dpf-toast.show{transform:translateY(0);opacity:1}