:root {
            --primary: #0a7c3e;
            --primary-dark: #086030;
            --primary-light: #12a34f;
            --secondary: #1565c0;
            --accent: #ff6b00;
            --dark: #1a1a2e;
            --gray-900: #212121;
            --gray-800: #424242;
            --gray-700: #616161;
            --gray-600: #757575;
            --gray-400: #bdbdbd;
            --gray-200: #eeeeee;
            --gray-100: #f5f5f5;
            --white: #ffffff;
            --gradient-primary: linear-gradient(135deg, #0a7c3e 0%, #12a34f 50%, #0d9248 100%);
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.12);
            --shadow-lg: 0 8px 40px rgba(0,0,0,0.16);
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 16px;
            --radius-xl: 24px;
        }

        * { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
            color: var(--gray-900);
            line-height: 1.8;
            background: var(--white);
            overflow-x: hidden;
        }
        a { text-decoration: none; color: inherit; }
        img { max-width: 100%; height: auto; display: block; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

        /* Header */
        .header {
            background: #fff;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 20px rgba(0,0,0,0.08);
        }
        .header-inner {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 40px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 90px;
        }
        .logo { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }
        .logo img { height: 78px; width: auto; object-fit: contain; }
        .logo-brand { display: flex; flex-direction: column; gap: 1px; justify-content: center; }
        .logo-tagline { font-size: 12px; font-weight: 700; color: #1f2d3d; letter-spacing: 0.3px; line-height: 1.4; display: inline-block; max-width: 280px; }
        .nav { display: flex; align-items: center; gap: 4px; }
        .nav a {
            text-decoration: none;
            color: #333;
            font-size: 15px;
            font-weight: 500;
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            transition: all 0.3s;
            position: relative;
        }
        .nav a:hover { color: #0a7c3e; }
        .nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 24px;
            height: 2.5px;
            background: #0a7c3e;
            border-radius: 2px;
            transition: transform 0.3s;
        }
        .nav a:hover::after { transform: translateX(-50%) scaleX(1); }
        .header-contact {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: 2px;
            flex-shrink: 0;
            padding-left: 20px;
            border-left: 1px solid #e8e8e8;
            margin-left: 12px;
        }
        .header-contact-row { display: flex; align-items: center; gap: 6px; font-size: 13px; line-height: 1.4; }
        .contact-label { color: #888; white-space: nowrap; width: 56px; text-align: right; flex-shrink: 0; }
        .contact-phone { color: #c62828; font-weight: 700; font-size: 14px; letter-spacing: 0.5px; white-space: nowrap; }
        .mobile-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; font-size: 22px; }

        @media (max-width: 1024px) {
            .header-inner { padding: 0 20px; height: 72px; }
            .nav, .header-contact { display: none; }
            .mobile-toggle { display: block; }
        }

        /* Breadcrumb */
        .breadcrumb {
            background: var(--gray-100);
            padding: 16px 0;
            font-size: 14px;
            color: var(--gray-700);
        }
        .breadcrumb a { color: var(--primary); transition: color 0.3s; }
        .breadcrumb a:hover { color: var(--primary-dark); }
        .breadcrumb span { margin: 0 8px; color: var(--gray-400); }

        /* Section titles */
        .section-title {
            font-size: 36px;
            font-weight: 700;
            color: var(--gray-900);
            margin-bottom: 16px;
            position: relative;
            display: inline-block;
        }
        .section-title::after {
            content: '';
            display: block;
            width: 48px;
            height: 4px;
            background: var(--gradient-primary);
            border-radius: 2px;
            margin-top: 12px;
        }
        .section-subtitle { font-size: 16px; color: var(--gray-700); margin-bottom: 40px; max-width: 760px; }
        .section-header { margin-bottom: 48px; }

        /* Product Hero */
        .product-hero {
            padding: 60px 0 40px;
            background: linear-gradient(180deg, #f8fffb 0%, #ffffff 100%);
        }
        .product-hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .product-hero-image {
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            background: var(--gray-100);
        }
        .product-hero-image img { width: 100%; height: 420px; object-fit: cover; }
        .product-badge {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            font-size: 13px;
            font-weight: 700;
            padding: 6px 14px;
            border-radius: 20px;
            margin-bottom: 18px;
        }
        .product-hero-title {
            font-size: 38px;
            font-weight: 800;
            color: var(--gray-900);
            line-height: 1.25;
            margin-bottom: 18px;
        }
        .product-hero-subtitle {
            font-size: 18px;
            color: var(--primary);
            font-weight: 600;
            margin-bottom: 20px;
        }
        .product-hero-desc { font-size: 16px; color: var(--gray-800); margin-bottom: 28px; }
        .hero-specs { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 32px; }
        .hero-spec-tag {
            background: rgba(10,124,62,0.08);
            color: var(--primary-dark);
            border: 1px solid rgba(10,124,62,0.2);
            padding: 8px 16px;
            border-radius: 24px;
            font-size: 14px;
            font-weight: 600;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--gradient-primary);
            color: #fff;
            padding: 14px 32px;
            border-radius: 30px;
            font-size: 16px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            box-shadow: var(--shadow-md);
            transition: all 0.3s;
        }
        .btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--primary);
            padding: 13px 30px;
            border-radius: 30px;
            font-size: 16px;
            font-weight: 600;
            border: 2px solid var(--primary);
            cursor: pointer;
            transition: all 0.3s;
            margin-left: 16px;
        }
        .btn-outline:hover { background: var(--primary); color: #fff; }

        /* Features */
        .features-section { padding: 80px 0; background: var(--white); }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--gray-200);
            transition: all 0.3s;
        }
        .feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            background: rgba(10,124,62,0.1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            margin-bottom: 20px;
        }
        .feature-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 12px; color: var(--gray-900); }
        .feature-card p { font-size: 15px; color: var(--gray-700); line-height: 1.75; }

        /* Specs Table Image */
        .specs-image-section { padding: 40px 0 80px; background: var(--white); }
        .specs-image-section .container { max-width: 1400px; }
        .specs-image-title-wrap { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .specs-image-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--gray-900);
            text-align: left;
            margin-bottom: 24px;
            position: relative;
            display: block;
        }
        .specs-image-title::after {
            content: '';
            display: block;
            width: 40px;
            height: 4px;
            background: var(--gradient-primary);
            border-radius: 2px;
            margin: 10px 0 0;
        }
        .specs-image-wrap {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--gray-200);
            text-align: center;
        }

        /* Specs HTML Table */
        .specs-html-table { width: 100%; border-collapse: collapse; font-size: 14px; color: #333; min-width: 1100px; }
        .specs-html-table thead th {
            background: #5a9bd5;
            color: #fff;
            font-weight: 600;
            padding: 10px 8px;
            border: 1px solid #4a8bc5;
            text-align: center;
            white-space: nowrap;
        }
        .specs-html-table thead th.col-span { border-bottom: 1px solid #4a8bc5; }
        
        .specs-html-table thead tr:nth-child(2) th,
        .specs-html-table thead tr:nth-child(3) th { border-bottom: 1px solid #4a8bc5; }
        .specs-html-table tbody td {
            background: #f0f8ff;
            padding: 10px 8px;
            border: 1px solid #d0e8f7;
            text-align: center;
            vertical-align: middle;
        }
        .specs-html-table tbody td.text-left { text-align: left; }
        .specs-html-table tbody tr.category td {
            background: #e3f2fd;
            color: #1565c0;
            font-weight: 600;
            text-align: left;
            padding-left: 12px;
        }
        .specs-html-table tbody tr.data td:first-child { font-weight: 600; }
        .specs-html-table .unit { font-size: 12px; color: rgba(255,255,255,0.9); display: block; }
        .specs-html-table .astm { font-size: 12px; color: rgba(255,255,255,0.9); display: block; }
        .specs-table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }

        /* Applications */
        .applications-section { padding: 80px 0; background: var(--white); }
        .apps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .app-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            background: #fff;
            transition: all 0.3s;
        }
        .app-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
        .app-card-image { height: 200px; overflow: hidden; }
        .app-card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
        .app-card:hover .app-card-image img { transform: scale(1.08); }
        .app-card-body { padding: 24px; }
        .app-card-body h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; color: var(--gray-900); }
        .app-card-body p { font-size: 14px; color: var(--gray-700); line-height: 1.7; }

        /* Certifications */
        .cert-section { padding: 80px 0; background: linear-gradient(135deg, #f8fffb 0%, #f0f7ff 100%); }
        .cert-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .cert-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-md);
            border-top: 4px solid var(--primary);
        }
        .cert-card-icon {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: rgba(10,124,62,0.1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            margin: 0 auto 16px;
        }
        .cert-card h4 { font-size: 17px; font-weight: 700; margin-bottom: 8px; color: var(--gray-900); }
        .cert-card p { font-size: 13px; color: var(--gray-700); line-height: 1.6; }

        /* Case */
        .case-section { padding: 80px 0; background: var(--white); }
        .case-card {
            background: linear-gradient(135deg, #f8fffb 0%, #ffffff 100%);
            border-radius: var(--radius-xl);
            padding: 48px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--gray-200);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .case-card-image { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); }
        .case-card-image img { width: 100%; height: 320px; object-fit: cover; }
        .case-card-content h3 { font-size: 24px; font-weight: 700; margin-bottom: 16px; color: var(--gray-900); }
        .case-card-content p { font-size: 15px; color: var(--gray-800); margin-bottom: 14px; line-height: 1.8; }
        .case-solution-box {
            background: rgba(10,124,62,0.06);
            border-left: 4px solid var(--primary);
            padding: 20px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin-top: 20px;
        }
        .case-solution-box strong { color: var(--primary-dark); display: block; margin-bottom: 8px; }

        /* CTA */
        .cta-section {
            padding: 80px 0;
            background: var(--gradient-primary);
            text-align: center;
            color: #fff;
        }
        .cta-section .section-title { color: #fff; }
        .cta-section .section-title::after { background: rgba(255,255,255,0.6); }
        .cta-section .section-subtitle { color: rgba(255,255,255,0.9); margin: 0 auto 40px; }
        .cta-phone { font-size: 32px; font-weight: 800; margin-bottom: 4px; text-align: center; }
        .cta-email { font-size: 18px; opacity: 0.95; margin-bottom: 8px; text-align: center; }
        .cta-mobile { font-size: 20px; font-weight: 600; margin-bottom: 12px; opacity: 0.95; text-align: center; }
        .cta-section .btn-primary {
            background: #fff;
            color: var(--primary);
            box-shadow: var(--shadow-lg);
        }
        .cta-section .btn-primary:hover { background: var(--gray-100); }

        /* Footer */
        .footer { background: var(--dark); color: #fff; padding: 70px 0 0; }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr 1.5fr;
            gap: 40px;
            padding-bottom: 50px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .footer-brand img { height: 44px; width: auto; object-fit: contain; margin-bottom: 20px; }
        .footer-about { font-size: 14px; color: rgba(255,255,255,0.75); line-height: 1.8; }
        .footer-col h4 { font-size: 16px; font-weight: 700; margin-bottom: 20px; color: #fff; }
        .footer-links { list-style: none; }
        .footer-links li { margin-bottom: 12px; }
        .footer-links a { font-size: 14px; color: rgba(255,255,255,0.75); transition: color 0.3s; }
        .footer-links a:hover { color: var(--primary-light); }
        .footer-contact-item { display: flex; gap: 12px; margin-bottom: 16px; font-size: 14px; color: rgba(255,255,255,0.75); }
        .footer-contact-icon { font-size: 18px; flex-shrink: 0; }
        .footer-bottom {
            padding: 24px 0;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255,255,255,0.6);
        }
        .footer-bottom a { color: rgba(255,255,255,0.6); margin: 0 6px; }
        .footer-bottom a:hover { color: #fff; }

        @media (max-width: 1024px) {
            .product-hero-grid, .specs-grid, .case-card { grid-template-columns: 1fr; }
            .features-grid, .apps-grid { grid-template-columns: repeat(2, 1fr); }
            .cert-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 640px) {
            .product-hero-title { font-size: 28px; }
            .section-title { font-size: 28px; }
            .features-grid, .apps-grid, .cert-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
            .btn-outline { margin-left: 0; margin-top: 12px; }
            .hero-buttons { display: flex; flex-direction: column; }
        }
            /* 页脚扫码关注 */
        .footer-qr-row { display: flex; align-items: center; justify-content: space-between; gap: 40px; padding: 36px 0 12px; flex-wrap: wrap; }
        .footer-qr-row h4 { color: var(--white, #fff); font-size: 16px; font-weight: 700; margin: 0; letter-spacing: 1px; white-space: nowrap; }
        .footer-qrs { display: flex; flex: 1; justify-content: space-around; gap: 24px; flex-wrap: wrap; }
        .footer-qr { text-align: center; }
        .footer-qr img { width: 96px; height: 96px; aspect-ratio: 1; object-fit: contain; background: #fff; border-radius: 8px; display: block; margin: 0 auto 6px; padding: 2px; }
        .footer-qr span { font-size: 12px; color: rgba(255,255,255,.65); }
        @media (max-width: 768px) { .footer-qr-row { flex-direction: column; align-items: flex-start; gap: 20px; } .footer-qrs { justify-content: flex-start; gap: 28px; } }