* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: Arial, sans-serif;
        }

        /* Core style variables: font size hierarchy and color scheme */
        :root {
            --primary-color: #FF7D00;
            --primary-dark: #E67000;
            --base-font-size: 16px;
            --title-font-size: 36px;
            --mobile-title-size: 28px;
            --xs-title-size: 24px;
            --subtitle-font-size: 18px;
            --mobile-subtitle-size: 16px;
            --light-gray: #f7f7f7;
            --table-even-bg: #FFF4EB;
            --table-hover-bg: #FFE8D0;
            --text-dark: #222;
        }

        body {
            background: #fff;
            color: var(--text-dark);
            line-height: 1.7;
            font-size: var(--base-font-size);
        }

        /* Main container: centered, max-width, top-aligned layout */
        .main-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            width: 100%;
        }

        /* Section title: top aligned, bold, prominent style */
        .section-title {
            font-size: var(--title-font-size);
            font-weight: bold;
            color: var(--primary-color);
            margin: 0 0 16px 0;
            padding: 0 0 8px 0;
            border-bottom: 2px solid #eee;
            line-height: 1.2;
            width: 100%;
            display: block;
        }

        /* Section block: full width with consistent top spacing */
        .section-block {
            width: 100%;
            margin-top: 40px;
        }

        .section-block:first-child {
            margin-top: 0;
        }

        /* Reserved title styles for extended use */
        .category-title {
            font-size: 32px;
            font-weight: bold;
            color: var(--primary-color);
            margin: 0 0 24px 0;
            border-left: 8px solid var(--primary-color);
            padding-left: 16px;
        }

        .product-title {
            font-size: 28px;
            font-weight: bold;
            color: var(--primary-color);
            margin: 0 0 8px 0;
            border-left: 6px solid var(--primary-color);
            padding-left: 15px;
        }

        .product-en-title {
            font-size: 18px;
            color: #333;
            margin-bottom: 16px;
            font-weight: 600;
        }

        /* Tag component styles */
        .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin: 16px 0;
        }

        .tag {
            background: var(--primary-color);
            color: white;
            padding: 8px 16px;
            border-radius: 4px;
            font-size: 14px;
            font-weight: 600;
        }

        /* Main product image style */
        .product-img {
            width: 100%;
            max-width: 700px;
            margin: 16px auto;
            display: block;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.06);
        }

        /* Product features section: gray background, rounded corners */
        .product-features {
            background: var(--light-gray);
            padding: 32px 24px;
            border-radius: 10px;
            width: 100%;
        }

        /* Features grid: 2 columns on desktop, 1 column on mobile */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 25px;
        }

        /* Feature card: horizontal layout on desktop */
        .feature-card {
            display: flex;
            flex-direction: row;
            align-items: flex-start;
            background: white;
            padding: 25px;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.06);
            border-top: 3px solid var(--primary-color);
            height: 100%;
            gap: 25px;
        }

        /* Feature image wrapper: fixed size 1:1 ratio */
        .feature-img-wrapper {
            flex-shrink: 0;
            width: 180px;
            aspect-ratio: 1/1;
            overflow: hidden;
            border-radius: 6px;
            box-shadow: 0 2px 6px rgba(0,0,0,0.08);
        }

        .feature-image {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* Feature text content */
        .feature-text {
            flex: 1;
            line-height: 1.8;
            font-size: var(--base-font-size);
        }

        .feature-card .feature-subtitle {
            color: var(--primary-color);
            font-size: var(--subtitle-font-size);
            display: block;
            font-weight: bold;
            height: 72px;
            line-height: 1.3;
            display: flex;
            align-items: center;
        }

        /* Table wrapper */
        .table-wrapper {
            width: 100%;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            overflow-x: auto;
        }

        /* Product parameters table: EQUAL COLUMN WIDTHS */
        .params-table {
            width: 100%;
            border-collapse: collapse;
            font-size: var(--base-font-size);
            table-layout: fixed;
        }

        /* All columns (including first th) get equal width */
        .params-table th,
        .params-table td {
            border: 1px solid #f0f0f0;
            padding: 10px 8px;
            text-align: center;
            vertical-align: middle;
            word-break: break-word;
        }

        /* Every column gets equal share (5 columns = 20% each) */
        .params-table th {
            width: 20%;
            background: linear-gradient(to right, var(--primary-color), var(--primary-dark));
            color: white;
            font-weight: bold;
            font-size: calc(var(--base-font-size) + 1px);
        }

        /* Table row effects: zebra striping and hover */
        .params-table tr:nth-child(odd) { background-color: #fff; }
        .params-table tr:nth-child(even) { background-color: var(--table-even-bg); }
        .params-table tr:hover {
            background-color: var(--table-hover-bg);
            transition: background 0.3s ease;
        }

        /* For cells that use colspan, override width behavior */
        .params-table td[colspan="4"] {
            text-align: center;
        }

        /* Table note: integrated with table */
        .table-note {
            background-color: #fafafa;
            text-align: center;
            padding: 12px;
            border-top: 1px solid #f0f0f0;
            width: 100%;
        }

        /* Application areas: improved readability */
        .application-areas {
            line-height: 1.8;
            font-size: var(--base-font-size);
            width: 100%;
        }

        /* Samples display: responsive flex layout */
        .samples-display {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            width: 100%;
        }

        .sample-card {
            flex: 1;
            min-width: 220px;
            background: var(--light-gray);
            padding: 20px;
            border-radius: 8px;
            text-align: center;
            font-weight: 600;
            font-size: var(--base-font-size);
            height: 100%;
        }

        .sample-img-wrapper {
            width: 100%;
            aspect-ratio: 1/1;
            max-width: 200px;
            margin: 0 auto 10px;
            overflow: hidden;
            border-radius: 6px;
        }

        .sample-image {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .sample-description {
            display: block;
            font-size: calc(var(--base-font-size) - 1px);
        }

        /* Mobile responsive styles (≤768px) */
        @media (max-width: 768px) {
            .main-container {
                padding: 15px;
                align-items: flex-start;
            }

            .section-title {
                font-size: var(--mobile-title-size);
                margin: 0 0 15px 0;
                padding-bottom: 6px;
            }

            .section-block {
                margin-top: 30px;
            }

            .features-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .feature-card {
                flex-direction: column;
                text-align: center;
                padding: 20px 15px;
                gap: 20px;
                align-items: center;
            }

            .feature-img-wrapper {
                width: 150px;
                margin-bottom: 10px;
            }

            .feature-card .feature-subtitle {
                font-size: var(--mobile-subtitle-size);
                height: auto;
                display: block;
            }

            .product-features {
                padding: 25px 15px;
            }

            /* On mobile, allow horizontal scroll for table if needed */
            .table-wrapper {
                overflow-x: auto;
            }

            .params-table {
                min-width: 600px;
                table-layout: fixed;
            }

            .params-table th,
            .params-table td {
                padding: 10px 8px;
                font-size: 14px;
            }

            .samples-display {
                flex-direction: column;
                gap: 15px;
            }

            .sample-card {
                min-width: 100%;
                padding: 20px 15px;
            }

            .sample-img-wrapper {
                max-width: 180px;
            }

            .application-areas {
                line-height: 1.7;
                font-size: 15px;
            }

            .category-title {
                font-size: 28px;
                margin: 0 0 16px 0;
            }

            .product-title {
                font-size: 24px;
            }
        }

        /* Extra small screen (≤480px) */
        @media (max-width: 480px) {
            .section-title {
                font-size: var(--xs-title-size);
            }

            .feature-img-wrapper {
                width: 120px;
            }

            .sample-img-wrapper {
                max-width: 150px;
            }
        }

        /* Desktop: no horizontal scrollbar, table columns equally spaced */
        @media (min-width: 769px) {
            .table-wrapper {
                overflow-x: visible;
            }
            .params-table th,
            .params-table td {
                padding: 10px 8px;
            }
        }