.coa-library-wrapper {
            --ypb-coa-navy-900: #0a1628;
            --ypb-coa-navy-800: #111d35;
            --ypb-coa-navy-700: #1a2744;
            --ypb-coa-navy-600: #243352;
            --ypb-coa-slate-400: #94a3b8;
            --ypb-coa-slate-300: #cbd5e1;
            --ypb-coa-slate-200: #e2e8f0;
            --ypb-coa-white: #ffffff;
            --ypb-coa-emerald-500: #10b981;
            --ypb-coa-emerald-400: #34d399;
            --ypb-coa-emerald-900: #064e3b;
            --ypb-coa-amber-500: #f59e0b;
            --ypb-coa-red-500: #ef4444;
            --ypb-coa-font-sans: 'IBM Plex Sans', -apple-system, sans-serif;
            --ypb-coa-font-mono: 'IBM Plex Mono', monospace;
        }

        .coa-library-wrapper {
            background: var(--ypb-coa-navy-900);
            min-height: 100vh;
            position: relative;
            color: #ffffff;
            box-sizing: border-box;
            font-family: var(--ypb-coa-font-sans);
            line-height: 1.6;
        }

        .coa-library-wrapper *,
        .coa-library-wrapper *::before,
        .coa-library-wrapper *::after {
            box-sizing: inherit;
        }

        .coa-library-wrapper h1,
        .coa-library-wrapper h2,
        .coa-library-wrapper h3,
        .coa-library-wrapper p {
            margin: 0;
            padding: 0;
        }

        .coa-library-wrapper .page-bg {
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
            background-size: 60px 60px;
            pointer-events: none;
            z-index: 0;
        }

        .coa-library-wrapper .container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }

        .coa-library-wrapper .header {
            padding: 60px 0 40px;
            text-align: center;
            border-bottom: 1px solid var(--ypb-coa-navy-600);
            color: #ffffff;
        }

        .coa-library-wrapper .header-badges {
            display: flex;
            justify-content: center;
            gap: 12px;
            margin-bottom: 24px;
            flex-wrap: wrap;
        }

        .coa-library-wrapper .header-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--ypb-coa-emerald-900);
            color: var(--ypb-coa-emerald-400);
            padding: 8px 16px;
            border-radius: 100px;
            font-size: 11px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .coa-library-wrapper .header-badge svg {
            width: 16px;
            height: 16px;
        }

        .coa-library-wrapper .header h1 {
            font-size: clamp(32px, 5vw, 48px);
            font-weight: 700;
            letter-spacing: -1px;
            margin-bottom: 16px;
            color: #ffffff !important;
        }

        .coa-library-wrapper .header p {
            color: var(--ypb-coa-slate-400);
            font-size: 18px;
            max-width: 600px;
            margin: 0 auto;
        }

        .coa-library-wrapper .hero-stats {
            display: flex;
            justify-content: center;
            gap: 48px;
            margin-top: 40px;
            padding-top: 40px;
            border-top: 1px solid var(--ypb-coa-navy-600);
            flex-wrap: wrap;
        }

        .coa-library-wrapper .hero-stat {
            text-align: center;
        }

        .coa-library-wrapper .hero-stat-value {
            font-size: 32px;
            font-weight: 700;
            color: var(--ypb-coa-emerald-400);
            font-family: var(--ypb-coa-font-mono);
        }

        .coa-library-wrapper .hero-stat-label {
            font-size: 13px;
            color: var(--ypb-coa-slate-400);
            margin-top: 4px;
        }

        .coa-library-wrapper .testing-section {
            padding: 50px 0 40px;
            border-bottom: 1px solid var(--ypb-coa-navy-600);
        }

        .coa-library-wrapper .testing-header {
            text-align: center;
            margin-bottom: 32px;
        }

        .coa-library-wrapper .testing-header h2 {
            font-size: 14px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--ypb-coa-emerald-400);
            margin-bottom: 8px;
        }

        .coa-library-wrapper .testing-header p {
            font-size: 15px;
            color: var(--ypb-coa-slate-400);
        }

        .coa-library-wrapper .trust-stats {
            display: flex;
            justify-content: center;
            gap: 32px;
            padding: 0;
            flex-wrap: wrap;
        }

        .coa-library-wrapper .trust-stat {
            text-align: center;
            min-width: 140px;
        }

        .coa-library-wrapper .trust-stat-value {
            font-size: 20px;
            font-weight: 700;
            color: var(--ypb-coa-emerald-400);
            font-family: var(--ypb-coa-font-sans);
        }

        .coa-library-wrapper .trust-stat-label {
            font-size: 11px;
            color: var(--ypb-coa-slate-400);
            letter-spacing: 0.3px;
            margin-top: 4px;
            line-height: 1.4;
        }

        .coa-library-wrapper .controls {
            padding: 40px 0;
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            align-items: center;
        }

        .coa-library-wrapper .search-box {
            flex: 1;
            min-width: 280px;
            position: relative;
        }

        .coa-library-wrapper .search-box svg {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            width: 20px;
            height: 20px;
            color: var(--ypb-coa-slate-400);
        }

        .coa-library-wrapper .search-box input {
            width: 100%;
            padding: 16px 16px 16px 48px;
            background: var(--ypb-coa-navy-800);
            border: 1px solid var(--ypb-coa-navy-600);
            border-radius: 8px;
            color: #ffffff !important;
            font-size: 15px;
            font-family: var(--ypb-coa-font-sans);
            transition: all 0.2s;
            -webkit-text-fill-color: #ffffff !important;
            caret-color: #ffffff;
        }

        .coa-library-wrapper .search-box input:focus {
            outline: none;
            border-color: var(--ypb-coa-emerald-500);
            box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
        }

        .coa-library-wrapper .search-box input::placeholder {
            color: var(--ypb-coa-slate-400);
        }

        .coa-library-wrapper .search-box input:-webkit-autofill,
        .coa-library-wrapper .search-box input:-webkit-autofill:hover,
        .coa-library-wrapper .search-box input:-webkit-autofill:focus {
            -webkit-text-fill-color: #ffffff !important;
            -webkit-box-shadow: 0 0 0px 1000px var(--ypb-coa-navy-800) inset !important;
            transition: background-color 5000s ease-in-out 0s;
        }

        .coa-library-wrapper .filter-buttons {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .coa-library-wrapper .filter-btn {
            padding: 12px 20px;
            background: var(--ypb-coa-navy-800);
            border: 1px solid var(--ypb-coa-navy-600);
            border-radius: 8px;
            color: var(--ypb-coa-slate-300);
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s;
            font-family: var(--ypb-coa-font-sans);
            white-space: nowrap;
        }

        .coa-library-wrapper .filter-btn:hover {
            background: var(--ypb-coa-navy-700);
            border-color: var(--ypb-coa-slate-400);
        }

        .coa-library-wrapper .filter-btn.active {
            background: var(--ypb-coa-emerald-900);
            border-color: var(--ypb-coa-emerald-500);
            color: var(--ypb-coa-emerald-400);
        }

        .coa-library-wrapper .results-info {
            padding-bottom: 24px;
            color: var(--ypb-coa-slate-400);
            font-size: 14px;
        }

        .coa-library-wrapper .results-info span {
            color: var(--ypb-coa-white);
            font-weight: 600;
        }

        .coa-library-wrapper .coa-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
            gap: 20px;
            padding-bottom: 80px;
        }

        /* 2026-05-20: chromatography-themed loading indicator shown
           while the catalog + PA storefront API calls resolve. Used
           to flash with nothing on-screen during the ~1.5-2s fetch. */
        .coa-library-wrapper .ypb-coa-loading {
            align-items: center;
            display: flex;
            flex-direction: column;
            gap: 22px;
            padding: 80px 22px;
            text-align: center;
        }
        .coa-library-wrapper .ypb-coa-loading[hidden] { display: none; }
        .coa-library-wrapper .ypb-coa-loading__scanner {
            color: var(--ypb-coa-emerald-500, #10b981);
            height: 96px;
            position: relative;
            width: 96px;
        }
        .coa-library-wrapper .ypb-coa-loading__beaker { inset: 0; position: absolute; }
        .coa-library-wrapper .ypb-coa-loading__beaker svg { display: block; width: 100%; height: 100%; }
        .coa-library-wrapper .ypb-coa-loading__beaker-fill {
            transform-origin: center bottom;
            animation: ypb-coa-fill 1.6s ease-in-out infinite;
        }
        .coa-library-wrapper .ypb-coa-loading__beaker-bubble {
            animation: ypb-coa-bubble 1.6s ease-in-out infinite;
            transform-origin: center;
        }
        .coa-library-wrapper .ypb-coa-loading__beaker-bubble--b { animation-delay: 0.45s; }
        .coa-library-wrapper .ypb-coa-loading__beaker-bubble--c { animation-delay: 0.85s; }
        .coa-library-wrapper .ypb-coa-loading__scan {
            background: linear-gradient(180deg, transparent, var(--ypb-coa-emerald-500, #10b981), transparent);
            height: 2px;
            inset: 50% 12% auto 12%;
            opacity: 0.85;
            position: absolute;
            animation: ypb-coa-scan 1.8s linear infinite;
        }
        .coa-library-wrapper .ypb-coa-loading__peaks {
            align-items: flex-end;
            display: flex;
            gap: 6px;
            height: 24px;
        }
        .coa-library-wrapper .ypb-coa-loading__peak {
            background: var(--ypb-coa-emerald-500, #10b981);
            border-radius: 2px;
            height: 100%;
            opacity: 0.7;
            transform: scaleY(0.25);
            transform-origin: center bottom;
            width: 6px;
            animation: ypb-coa-peak 1.2s ease-in-out infinite;
        }
        .coa-library-wrapper .ypb-coa-loading__peak:nth-child(1) { animation-delay: 0s; }
        .coa-library-wrapper .ypb-coa-loading__peak:nth-child(2) { animation-delay: 0.12s; }
        .coa-library-wrapper .ypb-coa-loading__peak:nth-child(3) { animation-delay: 0.24s; }
        .coa-library-wrapper .ypb-coa-loading__peak:nth-child(4) { animation-delay: 0.36s; }
        .coa-library-wrapper .ypb-coa-loading__peak:nth-child(5) { animation-delay: 0.48s; }
        .coa-library-wrapper .ypb-coa-loading__copy {
            color: var(--ypb-coa-slate-400, #94a3b8);
            font-size: 13px;
            letter-spacing: 0.16em;
            margin: 0;
            text-transform: uppercase;
        }
        @keyframes ypb-coa-fill {
            0%, 100% { transform: scaleY(0.55); }
            50%      { transform: scaleY(0.9);  }
        }
        @keyframes ypb-coa-bubble {
            0%   { opacity: 0; transform: translateY(0) scale(0.7); }
            40%  { opacity: 0.9; }
            100% { opacity: 0; transform: translateY(-18px) scale(1.1); }
        }
        @keyframes ypb-coa-scan {
            0%   { transform: translateY(-14px); opacity: 0; }
            20%  { opacity: 1; }
            80%  { opacity: 1; }
            100% { transform: translateY(14px); opacity: 0; }
        }
        @keyframes ypb-coa-peak {
            0%, 100% { transform: scaleY(0.25); opacity: 0.55; }
            50%      { transform: scaleY(1);    opacity: 1;    }
        }
        @media (prefers-reduced-motion: reduce) {
            .coa-library-wrapper .ypb-coa-loading__beaker-fill,
            .coa-library-wrapper .ypb-coa-loading__beaker-bubble,
            .coa-library-wrapper .ypb-coa-loading__scan,
            .coa-library-wrapper .ypb-coa-loading__peak,
            .coa-library-wrapper .coa-card { animation: none; opacity: 1; }
        }

        .coa-library-wrapper .coa-card {
            background: var(--ypb-coa-navy-800);
            border: 1px solid var(--ypb-coa-navy-600);
            border-radius: 12px;
            overflow: hidden;
            transition: all 0.3s;
            opacity: 0;
            animation: ypb-coa-fade-in 0.4s ease-out forwards;
        }

        .coa-library-wrapper .coa-card:hover {
            transform: translateY(-4px);
            border-color: var(--ypb-coa-emerald-500);
            box-shadow: 0 20px 40px rgba(0,0,0,0.3);
        }

        @media (prefers-reduced-motion: reduce) {
            .coa-library-wrapper .coa-card { transition: none; }
            .coa-library-wrapper .coa-card:hover { transform: none; }
        }

        .coa-library-wrapper .coa-card-header {
            padding: 20px 20px 16px;
            border-bottom: 1px solid var(--ypb-coa-navy-600);
        }

        .coa-library-wrapper .coa-card-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 2px;
        }

        .coa-library-wrapper .coa-card-subtitle {
            font-size: 13px;
            color: var(--ypb-coa-slate-400);
        }

        .coa-library-wrapper .coa-card-body {
            padding: 20px;
        }

        /* Tile count varies per certificate — a laboratory that runs four
           tests gets four tiles, not four tiles and two blanks — so the grid
           fits whatever it is given rather than assuming two or six. */
        .coa-library-wrapper .coa-stats {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(96px, 1fr));
            gap: 12px;
            margin-bottom: 20px;
        }

        .coa-library-wrapper .coa-stats.six-panel {
            grid-template-columns: 1fr 1fr 1fr;
            gap: 10px;
        }

        .coa-library-wrapper .coa-stat {
            background: var(--ypb-coa-navy-700);
            padding: 12px;
            border-radius: 6px;
        }

        .coa-library-wrapper .coa-stats.six-panel .coa-stat {
            padding: 10px;
        }

        .coa-library-wrapper .coa-stat-label {
            font-size: 9px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            color: var(--ypb-coa-slate-400);
            margin-bottom: 2px;
        }

        .coa-library-wrapper .coa-stat-value {
            font-size: 14px;
            font-weight: 700;
            font-family: var(--ypb-coa-font-mono);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .coa-library-wrapper .coa-stat-value.pass {
            color: var(--ypb-coa-emerald-400);
        }

        .coa-library-wrapper .coa-stat-value svg {
            width: 12px;
            height: 12px;
        }

        .coa-library-wrapper .coa-meta {
            display: flex;
            justify-content: space-between;
            font-size: 12px;
            color: var(--ypb-coa-slate-400);
            padding-top: 12px;
            border-top: 1px solid var(--ypb-coa-navy-600);
            margin-bottom: 16px;
        }

        .coa-library-wrapper .coa-actions {
            display: flex;
            gap: 10px;
        }

        .coa-library-wrapper .btn {
            flex: 1;
            padding: 12px 16px;
            border-radius: 6px;
            font-size: 13px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.2s;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            font-family: var(--ypb-coa-font-sans);
            text-decoration: none;
        }

        .coa-library-wrapper .btn svg {
            width: 16px;
            height: 16px;
        }

        .coa-library-wrapper .btn-primary {
            background: var(--ypb-coa-emerald-500);
            color: var(--ypb-coa-navy-900);
            border: none;
        }

        .coa-library-wrapper .btn-primary:hover {
            background: var(--ypb-coa-emerald-400);
        }

        .coa-library-wrapper .btn-primary[aria-disabled="true"] {
            color: #ffffff;
        }

        .coa-library-wrapper .btn-secondary {
            background: transparent;
            color: var(--ypb-coa-slate-300);
            border: 1px solid var(--ypb-coa-navy-600);
        }

        .coa-library-wrapper .btn-secondary:hover {
            background: var(--ypb-coa-navy-700);
            border-color: var(--ypb-coa-slate-400);
        }

        /* Modal */
        .coa-library-wrapper .modal-overlay {
            position: fixed;
            inset: 0;
            background: rgba(10, 22, 40, 0.9);
            backdrop-filter: blur(8px);
            z-index: 1000;
            display: none;
            align-items: center;
            justify-content: center;
            padding: 24px;
        }

        .coa-library-wrapper .modal-overlay.active {
            display: flex;
        }

        .coa-library-wrapper .modal {
            background: var(--ypb-coa-navy-800);
            border: 1px solid var(--ypb-coa-navy-600);
            border-radius: 16px;
            max-width: 600px;
            width: 100%;
            max-height: 90vh;
            overflow-y: auto;
        }

        .coa-library-wrapper .modal-header {
            padding: 24px;
            border-bottom: 1px solid var(--ypb-coa-navy-600);
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
        }

        .coa-library-wrapper .modal-close {
            background: var(--ypb-coa-navy-700);
            border: none;
            color: var(--ypb-coa-slate-400);
            width: 36px;
            height: 36px;
            border-radius: 8px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.2s;
        }

        .coa-library-wrapper .modal-close:hover {
            background: var(--ypb-coa-navy-600);
            color: var(--ypb-coa-white);
        }

        .coa-library-wrapper .modal-body {
            padding: 24px;
        }

        .coa-library-wrapper .modal-test-grid {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .coa-library-wrapper .modal-test-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 14px;
            background: var(--ypb-coa-navy-700);
            border-radius: 8px;
        }

        .coa-library-wrapper .modal-test-name {
            font-weight: 500;
            font-size: 14px;
        }

        .coa-library-wrapper .modal-test-result {
            display: flex;
            align-items: center;
            gap: 8px;
            font-family: var(--ypb-coa-font-mono);
            font-weight: 600;
        }

        .coa-library-wrapper .modal-test-result.pass {
            color: var(--ypb-coa-emerald-400);
        }

        .coa-library-wrapper .modal-footer {
            padding: 24px;
            border-top: 1px solid var(--ypb-coa-navy-600);
        }

        .coa-library-wrapper .no-results {
            text-align: center;
            padding: 80px 24px;
            color: var(--ypb-coa-slate-400);
        }

        .coa-library-wrapper .no-results svg {
            width: 64px;
            height: 64px;
            margin-bottom: 16px;
            opacity: 0.5;
        }

        .coa-library-wrapper .no-results h3 {
            color: var(--ypb-coa-white);
            margin-bottom: 8px;
        }

        .coa-library-wrapper .footer {
            border-top: 1px solid var(--ypb-coa-navy-600);
            padding: 40px 0;
            text-align: center;
        }

        .coa-library-wrapper .footer-text {
            color: var(--ypb-coa-slate-400);
            font-size: 13px;
            max-width: 700px;
            margin: 0 auto;
            line-height: 1.8;
        }

        .coa-library-wrapper .footer-text strong {
            color: var(--ypb-coa-slate-300);
        }

        @media (max-width: 768px) {
            .coa-library-wrapper .hero-stats {
                gap: 24px;
                flex-wrap: wrap;
            }

            .coa-library-wrapper .hero-stat-value {
                font-size: 24px;
            }

            .coa-library-wrapper .trust-stats {
                gap: 20px;
                padding: 0;
            }

            .coa-library-wrapper .trust-stat {
                min-width: 120px;
            }

            .coa-library-wrapper .trust-stat-value {
                font-size: 16px;
            }

            .coa-library-wrapper .coa-grid {
                grid-template-columns: 1fr;
            }

            .coa-library-wrapper .controls {
                flex-direction: column;
                align-items: stretch;
            }

            .coa-library-wrapper .filter-buttons {
                overflow-x: auto;
                flex-wrap: nowrap;
                padding-bottom: 8px;
                -webkit-overflow-scrolling: touch;
            }
        }

        /* 2026-05-20: phone-width refinement. The 3-column .coa-stats.six-panel
           grid was making stat values like "10.20mg" / "Confirmed" / "<20ppb"
           wrap to two lines on iPhone-SE-class viewports. Drop to 2 columns
           below 480px so each stat has enough horizontal space. */
        @media (max-width: 480px) {
            .coa-library-wrapper .coa-stats.six-panel {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .coa-library-wrapper .coa-stat-value {
                font-size: 16px;
            }
            .coa-library-wrapper .coa-card-header,
            .coa-library-wrapper .coa-card-body {
                padding: 16px;
            }
            .coa-library-wrapper .hero-stat-value {
                font-size: 22px;
            }
        }

        /* 2026-05-20: ultra-narrow safety net for 320px-class viewports
           (iPhone SE 1st gen, foldables in narrow orientation). Single
           column stats so nothing wraps. */
        @media (max-width: 360px) {
            .coa-library-wrapper .coa-stats.six-panel,
            .coa-library-wrapper .coa-stats {
                grid-template-columns: 1fr;
            }
        }

        @keyframes ypb-coa-fade-in {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .coa-library-wrapper .coa-card:nth-child(1) { animation-delay: 0.02s; }
        .coa-library-wrapper .coa-card:nth-child(2) { animation-delay: 0.04s; }
        .coa-library-wrapper .coa-card:nth-child(3) { animation-delay: 0.06s; }
        .coa-library-wrapper .coa-card:nth-child(4) { animation-delay: 0.08s; }
        .coa-library-wrapper .coa-card:nth-child(5) { animation-delay: 0.10s; }
        .coa-library-wrapper .coa-card:nth-child(6) { animation-delay: 0.12s; }
        .coa-library-wrapper .coa-card:nth-child(7) { animation-delay: 0.14s; }
        .coa-library-wrapper .coa-card:nth-child(8) { animation-delay: 0.16s; }
        .coa-library-wrapper .coa-card:nth-child(9) { animation-delay: 0.18s; }
        .coa-library-wrapper .coa-card:nth-child(10) { animation-delay: 0.20s; }

        .coa-library-wrapper .coa-stat-value.soon { color: var(--ypb-coa-slate-400); font-weight: 400; }
        .coa-library-wrapper .coa-stat-value.soon svg { display: none; }