.menu-lvl-2 sup, .category-title sup {
    color: #dc3545;
    font-size: 75%;
}

blockquote {
  quotes: "“" "”";
  font-style: italic;
  color: #444;
  background-color: #f9f9f9;
  padding: 1em 1.5em;
  margin: 1.5em 0;
  border-left: 4px solid #B54444;
  position: relative;
}

blockquote::before {
  content: open-quote;
}

blockquote::after {
  content: close-quote;
}

  .product-tabs {
      --tab-b: #e2dad7;
      --bg: #ffffff;
      --muted: #fff8f6;
      --text: #1e1a2f;
      --primary: #B54444;
      --primary-light: #fce9e7;
      --primary-soft: #ffe6e2;
      --radius: 16px;
      margin: 1rem 0;
    }

    .product-tabs .tabset {
      position: relative;
    }

    .product-tabs .tabset input[type="radio"] {
      position: absolute;
      inset: 0;
      opacity: 0;
      pointer-events: none;
    }

    /* tab navigation bar */
    .product-tabs .tab-nav {
      display: flex;
      flex-wrap: wrap;
      gap: 0.3rem;
      border-bottom: 1px solid var(--tab-b);
      background: var(--bg);
      padding-top: 0.25rem;
    }

    .product-tabs .tab-nav label {
      padding: 0.7rem 1.2rem;
      font-weight: 600;
      cursor: pointer;
      user-select: none;
      background: var(--muted);
      border: 1px solid var(--tab-b);
      border-bottom: none;
      border-top-left-radius: var(--radius);
      border-top-right-radius: var(--radius);
      font-size: 0.9rem;
      transition: all 0.2s ease;
      color: #4b3b44;
    }

    .product-tabs .tab-nav label:hover {
      background: #ffeae6;
      color: var(--primary);
      border-color: #e3cbc4;
    }

    .product-tabs .tab-nav label:focus-visible {
      outline: 2px solid var(--primary);
      outline-offset: 2px;
    }

    /* panels container */
    .product-tabs .tab-panels {
      border: 1px solid var(--tab-b);
      border-top: none;
      background: var(--bg);
      border-bottom-left-radius: var(--radius);
      border-bottom-right-radius: var(--radius);
      box-shadow: 0 6px 12px -8px rgba(0, 0, 0, 0.05);
    }

    .product-tabs .tab-panel {
      display: none;
      padding: 1.5rem 1.6rem;
      animation: fadeSlide 0.25s ease-out;
    }

    @keyframes fadeSlide {
      from { opacity: 0; transform: translateY(6px); }
      to { opacity: 1; transform: translateY(0); }
    }

    .product-tabs .tab-panel > :first-child {
      margin-top: 0;
    }

    /* active tab styling (checked state) */
    #tab-desc:checked ~ .tab-nav label[for="tab-desc"],
    #tab-review:checked ~ .tab-nav label[for="tab-review"],
    #tab-storage:checked ~ .tab-nav label[for="tab-storage"],
    #tab-usage:checked ~ .tab-nav label[for="tab-usage"],
    #tab-lab:checked ~ .tab-nav label[for="tab-lab"],
    #tab-auth:checked ~ .tab-nav label[for="tab-auth"],
    #tab-spec:checked ~ .tab-nav label[for="tab-spec"],
    #tab-faq:checked ~ .tab-nav label[for="tab-faq"] {
      background: var(--bg);
      color: var(--primary);
      border-bottom: 1px solid var(--bg);
      border-color: var(--tab-b) var(--tab-b) var(--bg) var(--tab-b);
      position: relative;
      font-weight: 700;
    }

    /* show panels */
    #tab-desc:checked ~ .tab-panels #panel-desc { display: block; }
    #tab-usage:checked ~ .tab-panels #panel-usage { display: block; }
    #tab-lab:checked ~ .tab-panels #panel-lab { display: block; }
    #tab-auth:checked ~ .tab-panels #panel-auth { display: block; }
    #tab-spec:checked ~ .tab-panels #panel-spec { display: block; }
    #tab-faq:checked ~ .tab-panels #panel-faq { display: block; }
    #tab-review:checked ~ .tab-panels #panel-review { display: block; }
    #tab-storage:checked ~ .tab-panels #panel-storage { display: block; }

    /* auto-hide empty sections (lab, review if empty) */
    .product-tabs:has(#panel-lab:empty) label[for="tab-lab"] { display: none; }
    .product-tabs #panel-lab:empty { display: none !important; }

    .product-tabs:has(#panel-review:empty) label[for="tab-review"] { display: none; }
    .product-tabs #panel-review:empty { display: none !important; }

    /* ========== SPECS GRID (UPDATED WITH NEW PRIMARY) ========== */
    .specs-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
      gap: 1.1rem;
      margin: 1rem 0 0.5rem;
    }

    .spec-card {
      background: #fefaf8;
      border-radius: 20px;
      padding: 1rem 1.2rem;
      border: 1px solid #f3e2dd;
      transition: all 0.2s;
      display: flex;
      align-items: flex-start;
      gap: 14px;
      box-shadow: 0 1px 2px rgba(0,0,0,0.02);
    }

    .spec-card:hover {
      border-color: #e2bfb8;
      background: #ffffff;
      transform: translateY(-1px);
      box-shadow: 0 6px 12px -8px rgba(181, 68, 68, 0.12);
    }

    .spec-icon {
      width: 40px;
      height: 40px;
      background: #fce8e4;
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      transition: background 0.2s;
    }

    .spec-icon i {
      font-size: 1.2rem;
      color: var(--primary);
    }

    .spec-card:hover .spec-icon {
      background: #ffdfd8;
    }

    .spec-content {
      flex: 1;
    }

    .spec-label-card {
      font-size: 0.7rem;
      text-transform: uppercase;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: 0.6px;
      margin-bottom: 6px;
    }

    .spec-value-card {
      font-weight: 600;
      font-size: 0.92rem;
      color: #1a1825;
      word-break: break-word;
      line-height: 1.4;
    }

    .spec-value-card code {
      background: #f1eae8;
      padding: 2px 8px;
      border-radius: 20px;
      font-size: 0.75rem;
      color: #B54444;
    }

    /* HPLC highlight uses new primary */
    .spec-value-card .highlight-primary {
      color: #B54444;
      font-weight: 800;
    }

    /* panel headings and general text */
    .tab-panel h2, .tab-panel h3 {
      font-weight: 700;
      letter-spacing: -0.2px;
    }
    
    .tab-panel h2 {
      font-size: 1.7rem;
      margin-bottom: 0.6rem;
      color: #2c243b;
      border-left: 4px solid var(--primary);
      padding-left: 1rem;
    }
    
    .tab-panel h2 .product-name-highlight {
      color: var(--primary);
    }
    
    .tab-panel h3 {
      font-size: 1.4rem;
      margin-bottom: 1rem;
      color: #2d2a3a;
      display: inline-block;
    }
    
    .tab-panel p {
      line-height: 1.55;
      color: #2d2a3a;
      margin-bottom: 1rem;
    }

    /* flask icon for lab section */
    .tab-panel .flask-icon-wrapper {
      display: flex;
      justify-content: center;
      margin: 1rem 0;
    }
    
    .tab-panel .flask-icon {
      font-size: 2.4rem;
      color: var(--primary);
      background: #fef0ec;
      padding: 12px;
      border-radius: 60px;
      box-shadow: 0 2px 8px rgba(181,68,68,0.1);
      display: inline-block;
    }

    /* content boxes for usage, shipping, storage */
    .info-card {
      background: var(--muted);
      border-left: 4px solid var(--primary);
      padding: 1rem 1.4rem;
      border-radius: 20px;
      margin: 1rem 0;
    }
    
    .info-card p:last-child {
      margin-bottom: 0;
    }
    
    .info-card .info-icon {
      margin-right: 6px;
    }

    .badge-primary {
      background: var(--primary-light);
      color: #B54444;
      padding: 4px 12px;
      border-radius: 40px;
      font-size: 0.75rem;
      font-weight: 700;
      display: inline-block;
    }
    
    .badge-primary i {
      margin-right: 4px;
    }

    /* lab sample card */
    .lab-sample {
      display: flex;
      align-items: center;
      gap: 2rem;
      flex-wrap: wrap;
      background: #fffaf8;
      border-radius: 28px;
      padding: 1.2rem;
      border: 1px solid #f3ded8;
      margin-top: 1rem;
    }
    
    .lab-sample .pdf-icon {
      font-size: 2.5rem;
      color: var(--primary);
    }
    
    .lab-badge {
      background: #B54444;
      color: white;
      border-radius: 60px;
      padding: 0.3rem 1rem;
      font-weight: 600;
    }
    
    /* review stars */
    .review-stars {
      color: var(--primary);
    }
    
    .review-item {
      border-bottom: 1px solid #efdfda;
      padding: 1rem 0;
    }
    
    .review-item:last-child {
      border-bottom: none;
    }
    
    /* FAQ details styling */
    .faq-item {
      margin-bottom: 1rem;
      background: #fff8f6;
      padding: 0.8rem;
      border-radius: 20px;
    }
    
    .faq-summary {
      font-weight: 700;
      cursor: pointer;
      color: var(--primary);
    }
    
    .faq-summary:hover {
      opacity: 0.8;
    }
    
    .faq-content {
      margin-top: 8px;
    }
    
    /* inline icons spacing */
    .inline-icon {
      margin-right: 6px;
    }
    
    .inline-icon-left {
      margin-right: 8px;
    }
    
    /* centered text utility */
    .text-center {
      text-align: center;
    }
    
    /* link styling */
    .tab-panel a {
      color: var(--primary);
      text-decoration: none;
      font-weight: 500;
    }
    
    .tab-panel a:hover {
      text-decoration: underline;
    }

    /* responsive styles: mobile sticky scroll + short/long labels */
    @media print {
      .product-tabs .tab-nav { display: none; }
      .product-tabs .tab-panel { display: block; }
      .spec-card { break-inside: avoid; }
    }

    /* default: show long, hide short */
    .product-tabs .tab-nav .t-short { display: none; }
    .product-tabs .tab-nav .t-long { display: inline; }

    @media (max-width: 640px) {
      .product-tabs {
        margin: 0.5rem 0;
      }

      .product-tabs .tab-nav .t-long { display: none; }
      .product-tabs .tab-nav .t-short { display: inline; }

      .product-tabs .tab-nav {
        position: sticky;
        top: 0;
        z-index: 20;
        background: var(--bg);
        display: flex;
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        gap: 0.65rem;
        padding: 0.7rem 0.8rem;
        border-bottom: 1px solid var(--tab-b);
        scroll-snap-type: x mandatory;
        scrollbar-width: none;
      }
      
      .product-tabs .tab-nav::-webkit-scrollbar {
        display: none;
      }
      
      .product-tabs .tab-nav {
        mask-image: linear-gradient(to right, transparent 0, #000 20px, #000 calc(100% - 20px), transparent 100%);
        -webkit-mask-image: linear-gradient(to right, transparent 0, #000 20px, #000 calc(100% - 20px), transparent 100%);
      }
      
      .product-tabs .tab-nav label {
        flex: 0 0 auto;
        scroll-snap-align: start;
        padding: 0.6rem 1rem;
        font-size: 0.85rem;
        line-height: 1;
        border-radius: 40px;
        border: 1px solid var(--tab-b);
        background: var(--muted);
        white-space: nowrap;
        font-weight: 600;
      }

      /* active tab in mobile: pill style with primary border */
      #tab-desc:checked ~ .tab-nav label[for="tab-desc"],
      #tab-review:checked ~ .tab-nav label[for="tab-review"],
      #tab-storage:checked ~ .tab-nav label[for="tab-storage"],
      #tab-usage:checked ~ .tab-nav label[for="tab-usage"],
      #tab-lab:checked ~ .tab-nav label[for="tab-lab"],
      #tab-auth:checked ~ .tab-nav label[for="tab-auth"],
      #tab-spec:checked ~ .tab-nav label[for="tab-spec"],
      #tab-faq:checked ~ .tab-nav label[for="tab-faq"] {
        background: var(--primary);
        color: white;
        border-color: var(--primary);
        box-shadow: 0 2px 6px rgba(181, 68, 68, 0.3);
      }

      .product-tabs .tab-panel {
        padding: 1rem 0.9rem;
      }

      .specs-grid {
        grid-template-columns: 1fr;
        gap: 0.9rem;
      }
      
      .tab-panel h2 {
        font-size: 1.4rem;
      }
    }

    @media (min-width: 641px) {
      .product-tabs .tab-nav .t-long { display: inline; }
      .product-tabs .tab-nav .t-short { display: none; }
    }