/* ----- isolated module – affects nothing outside ----- */
        .thickcopper-module * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        .thickcopper-module {
            display: block;
            font-family: 'Inter', 'Segoe UI', Roboto, system-ui, sans-serif;
            max-width: 1200px;
            margin: 0 auto;
            background: transparent;
            line-height: 1.5;
        }

        .thickcopper-card {
            background: white;
            border-radius: 2.5rem;
            box-shadow: 0 25px 40px -15px rgba(199, 36, 177, 0.2);
            padding: 2.2rem 2rem;
            border: 1px solid #f0e4f0;
        }

        /* accent #c724b1 */
        .accent-clr {
            color: #c724b1;
        }
        .accent-bg {
            background: #c724b1;
            color: white;
        }
        .accent-border {
            border-color: #c724b1;
        }

        .header {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 1.8rem;
        }
        .header i {
            font-style: normal;
            font-size: 2.2rem;
            color: #c724b1;
        }
        .header h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #1e293b;
        }
        .header h2 span {
            color: #c724b1;
        }

        .intro {
            background: #fcf2fb;
            border-radius: 1.5rem;
            padding: 1rem 1.5rem;
            margin-bottom: 2rem;
            border-left: 6px solid #c724b1;
            font-size: 1rem;
            color: #334155;
        }
        .intro .accent-note {
            color: #c724b1;
            font-weight: 600;
        }

        /* table styles */
        .table-wrap {
            overflow-x: auto;
            margin: 1.8rem 0;
            border-radius: 1.5rem;
            border: 1px solid #ece3f0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            background: white;
            font-size: 0.95rem;
            min-width: 600px;
        }
        th {
            background: #fbf2fc;
            color: #2c2c3a;
            font-weight: 600;
            padding: 1rem;
            text-align: center;
            border-bottom: 2px solid #c724b1;
        }
        td {
            padding: 0.9rem 1rem;
            border-bottom: 1px solid #ede7f0;
            text-align: center;
        }
        tr:last-child td {
            border-bottom: none;
        }
        .param-left {
            font-weight: 600;
            color: #1e293b;
            text-align: left;
        }
        .note {
            font-size: 0.85rem;
            color: #c724b1;
            margin-top: 0.2rem;
        }

        .test-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.2rem;
            margin: 1.8rem 0;
        }
        .test-item {
            background: #fbf7fd;
            border-radius: 1.5rem;
            padding: 1.2rem 1.2rem;
            border: 1px solid rgba(199,36,177,0.2);
        }
        .test-item .title {
            font-weight: 600;
            font-size: 1.1rem;
            margin-bottom: 0.5rem;
            color: #c724b1;
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .test-item .method {
            font-size: 0.9rem;
            color: #4a5568;
            margin-bottom: 0.3rem;
        }
        .test-item .standard {
            font-size: 0.95rem;
            font-weight: 500;
            margin-bottom: 0.2rem;
        }
        .test-item .quality {
            font-size: 0.9rem;
            color: #2d3a4c;
            border-top: 1px dashed #c724b1;
            margin-top: 0.5rem;
            padding-top: 0.5rem;
        }

        .promo-box {
            background: #f7f0fa;
            border-radius: 2rem;
            padding: 1.2rem 1.8rem;
            margin: 1.8rem 0 1.2rem;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            border-left: 6px solid #c724b1;
        }
        .promo-left {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            font-size: 1.1rem;
        }
        .promo-left i {
            font-size: 1.8rem;
            color: #c724b1;
        }
        .promo-right {
            background: #c724b1;
            color: white;
            padding: 0.5rem 1.5rem;
            border-radius: 60px;
            font-weight: 600;
            font-size: 0.95rem;
        }

        .badge {
            background: #f0e6f0;
            padding: 0.3rem 1rem;
            border-radius: 60px;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }
        .badge .badge-icon {
            color: #c724b1;
        }

        .footnote {
            background: #f9f2fc;
            border-radius: 1.5rem;
            padding: 1.2rem 1.5rem;
            margin-top: 2rem;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            border: 1px dashed #c724b1;
        }
        .footnote i {
            color: #c724b1;
            font-size: 1.2rem;
        }
        .footnote .strong {
            font-weight: 700;
            color: #c724b1;
        }

        .email-highlight {
            font-family: 'Courier New', monospace;
            background: #f0e6f0;
            padding: 0.2rem 0.8rem;
            border-radius: 40px;
            color: #c724b1;
            font-weight: 600;
        }

        @media (max-width: 600px) {
            .thickcopper-card { padding: 1.5rem; }
            .header h2 { font-size: 1.5rem; }
        }