.store-header{border-bottom:1px solid var(--border);background:var(--surface);position:-webkit-sticky;position:sticky;top:0;z-index:10}.store-header-inner{display:flex;align-items:center;justify-content:space-between;gap:var(--space-4);padding:var(--space-3) 0}.store-logo{display:inline-flex;align-items:center;line-height:0}.store-logo img{border-radius:8px}.store-nav{display:flex;align-items:center;gap:var(--space-5);list-style:none;margin:0;padding:0}.store-nav a{color:var(--text);text-decoration:none;font-weight:500}.store-nav a:hover{color:var(--brand-blue-500)}.cart-link{gap:var(--space-1);font-weight:600;color:var(--brand-blue-700);text-decoration:none}.cart-badge,.cart-link{display:inline-flex;align-items:center}.cart-badge{background:var(--orange);color:#fff;border-radius:999px;font-size:12px;min-width:20px;height:20px;justify-content:center;padding:0 6px}.store-footer{border-top:1px solid var(--border);background:var(--surface-soft);margin-top:var(--space-8);padding:var(--space-6) 0;color:var(--text-muted);font-size:14px}.store-footer-links{display:flex;flex-wrap:wrap;gap:var(--space-4);list-style:none;padding:0;margin:0 0 var(--space-3) 0}.store-footer-links a{color:var(--text-muted)}.hero{background:var(--surface-soft);border-radius:var(--radius-card);padding:var(--space-7) var(--space-5);margin:var(--space-6) 0;gap:var(--space-5);align-items:center;justify-content:space-between}.hero,.hero-actions{display:flex;flex-wrap:wrap}.hero-actions{gap:var(--space-3);margin-top:var(--space-4)}.section{margin:var(--space-7) 0}.section-title{margin-bottom:var(--space-4)}.chip-row{display:flex;flex-wrap:wrap;gap:var(--space-2);margin:var(--space-4) 0}.chip{display:inline-block;padding:var(--space-2) var(--space-4);border-radius:999px;border:1px solid var(--border);background:var(--surface);color:var(--text);text-decoration:none;font-size:14px}.chip[aria-current=true]{background:var(--brand-blue-700);border-color:var(--brand-blue-700);color:#fff}.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));grid-gap:var(--space-5);gap:var(--space-5)}@media (min-width:900px){.product-grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}}.category-row{margin:var(--space-6) 0}.category-row-title{margin:0 0 var(--space-4);font-size:18px;color:var(--text)}.product-card{border:1px solid var(--border);border-radius:var(--radius-card);overflow:hidden;background:var(--surface);display:flex;flex-direction:column;transition:box-shadow .15s ease}.product-card:focus-within,.product-card:hover{box-shadow:0 4px 16px rgba(23,32,51,.1)}.product-card-link{display:flex;flex-direction:column;flex:1 1;text-decoration:none;color:inherit}.product-card-actions{display:flex;gap:var(--space-2);padding:0 var(--space-4) var(--space-4)}.product-card-actions form{flex:1 1}.btn-block{width:100%;padding:10px 12px;font-size:14px;min-height:40px}.product-card-cover{aspect-ratio:3/4;background:var(--surface-soft);display:flex;align-items:center;justify-content:center;color:var(--text-muted);font-size:13px}.product-card-cover-image{aspect-ratio:3/4;width:100%;object-fit:cover;display:block}.product-card-body{padding:var(--space-4);display:flex;flex-direction:column;gap:var(--space-2);flex:1 1}.product-card-title{font-weight:600;color:var(--text);font-size:16px;margin:0}.price{font-weight:700;color:var(--brand-blue-700);font-size:18px}.price-strike{color:var(--text-muted);text-decoration:line-through;font-weight:400;font-size:14px;margin-right:var(--space-2)}.cart-table{width:100%;border-collapse:collapse}.cart-row{display:flex;align-items:center;gap:var(--space-4);padding:var(--space-4) 0;border-bottom:1px solid var(--border)}.cart-row-title{flex:1 1;font-weight:600}.cart-summary{margin-top:var(--space-5);padding-top:var(--space-4);border-top:2px solid var(--border);display:flex;flex-direction:column;align-items:flex-end;gap:var(--space-2)}.cart-summary-row{display:flex;justify-content:space-between;gap:var(--space-4);min-width:260px;max-width:100%}@media (max-width:768px){.store-nav{gap:var(--space-3);font-size:14px}.hero{padding:var(--space-5) var(--space-4)}.cart-summary{align-items:stretch}.cart-summary-row{min-width:0}}.series-menu{position:relative}.series-menu-trigger{display:inline-flex;align-items:center;gap:6px;border:none;background:none;padding:0;font:inherit;font-weight:500;color:var(--text);cursor:pointer;min-height:44px}.series-menu-trigger:hover{color:var(--brand-blue-500)}.series-menu-panel{position:absolute;top:calc(100% + 4px);left:50%;transform:translateX(-50%);width:min(340px,calc(100vw - 32px));background:var(--surface);border:1px solid var(--border);border-radius:14px;box-shadow:0 12px 32px rgba(23,32,51,.12);padding:var(--space-2);display:flex;flex-direction:column;gap:2px;z-index:20}.store-nav .series-menu-item{display:flex;align-items:center;gap:var(--space-3);padding:10px 12px;border-radius:var(--radius-control);color:var(--text)}.store-nav .series-menu-item:hover{background:var(--surface-soft);color:var(--text)}.series-menu-item-text{display:flex;flex-direction:column}.series-menu-item-title{font-weight:600}.series-menu-item-sub{font-size:13px;font-weight:400;color:var(--text-muted)}.series-menu-heading{font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--text-muted);padding:6px 12px 2px}.series-menu-divider{height:1px;background:var(--border);margin:4px 8px}.series-dot{width:10px;height:10px;border-radius:50%;flex-shrink:0;display:inline-block}.filter-row{align-items:center;margin:var(--space-2) 0}.filter-row-label{font-size:14px;color:var(--text-muted);min-width:72px}.series-section{margin-top:var(--space-6)}.series-section-header{border-bottom:1px solid var(--border);padding-bottom:var(--space-3)}.series-section-title{display:flex;align-items:center;gap:var(--space-2)}.series-section-title h2{margin:0;font-size:26px;color:var(--brand-blue-700)}.series-section-tagline{margin:var(--space-1) 0 0;color:var(--text-muted)}.featured-series{margin-top:var(--space-5)}.featured-series-header{display:flex;justify-content:space-between;align-items:flex-end;gap:var(--space-3);flex-wrap:wrap;margin-bottom:var(--space-3)}.featured-series-header h3{margin:0;font-size:24px;color:var(--brand-blue-700)}.featured-series-price{font-size:14px;color:var(--text-muted)}.featured-series-link{font-weight:600;white-space:nowrap}@media (max-width:560px){.featured-series .product-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--space-3)}.featured-series .product-card-body{padding:var(--space-3)}.featured-series .product-card-title{font-size:14px}.featured-series .product-card-actions{flex-direction:column;padding:0 var(--space-3) var(--space-3)}}.series-new-badge{background:#fff3e8;color:#9a4b12;font-size:12px;padding:2px 9px}.series-badge,.series-new-badge{font-weight:700;border-radius:999px}.series-badge{align-self:flex-start;font-size:11px;letter-spacing:.06em;padding:3px 9px}.series-badge-unlock{background:#efe9f7;color:#5b3f86}.series-badge-productive{background:#172033;color:#ffffff}.series-badge-type-anatomy{background:#e7f0e6;color:#3d6339}.series-badge-true-type{background:#eef4e6;color:#4b6b28}.pair-types{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:var(--space-2) 0;font-size:14px;color:var(--text-muted)}.pair-type-chip{font-weight:700;border-radius:10px;padding:2px 12px}@media (max-width:768px){.series-menu-panel{position:fixed;top:72px;left:16px;right:16px;width:auto;transform:none}}