/* 全局样式：字体Arial，正文18px，H标签统一20px */
        .product-content-wrapper {
            max-width: 1280px;
            margin: 0 auto;
            padding: 2rem 1.5rem;
            font-family: Arial, Helvetica, sans-serif;
            color: #1e2a3e;
            background-color: #ffffff;
            line-height: 1.5;
        }
        .product-content-wrapper h1,
        .product-content-wrapper h2,
        .product-content-wrapper h3 {
            font-size: 20px !important;
            font-weight: 700;
            margin: 1.5rem 0 0.75rem 0;
            color: #0a2540;
        }
        .product-content-wrapper h1 {
            border-left: 5px solid #2b6e9e;
            padding-left: 1.2rem;
            margin-top: 0;
        }
        .product-content-wrapper h2 {
            border-bottom: 2px solid #cbd5e1;
            padding-bottom: 0.5rem;
            margin-top: 2rem;
        }
        .product-content-wrapper p,
        .product-content-wrapper li,
        .product-content-wrapper .subhead,
        .product-content-wrapper .card,
        .product-content-wrapper .service-box,
        .product-content-wrapper .specs,
        .product-content-wrapper .accessory-badge,
        .product-content-wrapper .faq-item {
            font-size: 18px;
            line-height: 1.5;
        }
        .product-content-wrapper .subhead {
            font-size: 18px;
            margin-bottom: 2rem;
            border-bottom: 1px solid #e2e8f0;
            padding-bottom: 1rem;
        }
        .product-content-wrapper .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.5rem;
            margin: 1.5rem 0;
        }
        .product-content-wrapper .card {
            background: #f8fafc;
            border-radius: 1rem;
            padding: 1.5rem;
            box-shadow: 0 4px 6px -2px rgba(0,0,0,0.05), 0 1px 2px 0 rgba(0,0,0,0.03);
            transition: all 0.2s ease;
            border: 1px solid #e9edf2;
        }
        .product-content-wrapper .card:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 25px -5px rgba(0,0,0,0.1);
            border-color: #cbd5e1;
        }
        .product-content-wrapper .benefits-list {
            list-style: none;
            padding: 0;
        }
        .product-content-wrapper .benefits-list li {
            margin-bottom: 0.75rem;
            padding-left: 1.8rem;
            position: relative;
        }
        .product-content-wrapper .benefits-list li::before {
            content: "✓";
            color: #2b6e9e;
            font-weight: bold;
            font-size: 1.2rem;
            position: absolute;
            left: 0;
            top: -1px;
        }
        .product-content-wrapper .two-col {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin: 1.5rem 0;
        }
        @media (max-width: 768px) {
            .product-content-wrapper .two-col {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
        }
        .product-content-wrapper .accessory-badge {
            background: #eef2ff;
            border-left: 4px solid #2563eb;
            padding: 1rem 1.5rem;
            border-radius: 1rem;
            margin: 1rem 0;
        }
        .product-content-wrapper .service-box {
            background: #ffffff;
            border: 1px solid #e2e8f0;
            border-radius: 1rem;
            padding: 1rem 1.2rem;
            text-align: center;
            transition: 0.1s;
        }
        .product-content-wrapper .specs {
            background: #f1f5f9;
            padding: 1.2rem;
            border-radius: 1rem;
            overflow-x: auto;
        }
        /* 表格样式：2列9行 */
        .product-content-wrapper .specs-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 16px;
            background: white;
            border-radius: 0.75rem;
            overflow: hidden;
            box-shadow: 0 1px 2px rgba(0,0,0,0.05);
        }
        .product-content-wrapper .specs-table th,
        .product-content-wrapper .specs-table td {
            border: 1px solid #e2e8f0;
            padding: 12px 12px;
            text-align: left;
            vertical-align: top;
        }
        .product-content-wrapper .specs-table th {
            background-color: #f1f5f9;
            font-weight: 600;
            width: 30%;
        }
        /* FAQ 样式 */
        .product-content-wrapper .faq-container {
            margin: 2rem 0;
            border-top: 1px solid #e2e8f0;
            padding-top: 1rem;
        }
        .product-content-wrapper .faq-item {
            border-bottom: 1px solid #e9edf2;
            padding: 1rem 0;
        }
        .product-content-wrapper .faq-question {
            font-weight: 700;
            color: #0f3b5c;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .product-content-wrapper .faq-answer {
            margin-top: 0.5rem;
            color: #2d3e50;
            padding-right: 1rem;
        }
        .product-content-wrapper .inquiry-btn {
            display: inline-block;
            background-color: #2b6e9e;
            color: white;
            padding: 12px 28px;
            border-radius: 40px;
            text-decoration: none;
            font-weight: 600;
            font-size: 18px;
            margin-top: 1rem;
            transition: background 0.2s;
            border: none;
            cursor: pointer;
        }
        .product-content-wrapper .inquiry-btn:hover {
            background-color: #1e4a76;
        }
        /* YouTube 视频容器：响应式16:9 */
        .video-container {
            position: relative;
            padding-bottom: 56.25%; /* 16:9 比例 */
            height: 0;
            overflow: hidden;
            margin: 1.5rem 0 2rem 0;
            border-radius: 16px;
            background: #000;
        }
        .video-container iframe {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            border: 0;
        }
        hr {
            margin: 2rem 0;
            border: none;
            height: 1px;
            background: linear-gradient(to right, #e2e8f0, transparent);
        }