:root {
            --primary: #0A2540; /* 深医疗蓝 */
            --secondary: #0061FF; /* 亮蓝 */
            --bg-soft: #F8FAFC;
            --text-main: #425466;
            --accent: #00D4FF;
        }

        body {
            font-family: 'Lato', sans-serif;
            color: var(--text-main);
            margin: 0;
            line-height: 1.8;
            background-color: #fff;
        }

        h1, h2, h3 {
            font-family: 'Montserrat', sans-serif;
            color: var(--primary);
            font-weight: 700;
        }

        .container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Hero Section */
        header {
            padding: 120px 0 80px;
            background: radial-gradient(circle at top right, #eef6ff, #ffffff);
            text-align: center;
        }

        .badge {
            display: inline-block;
            padding: 5px 15px;
            background: rgba(0, 97, 255, 0.1);
            color: var(--secondary);
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 700;
            margin-bottom: 20px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        h1 { font-size: 3.5rem; margin: 0; line-height: 1.1; }

        /* Article Content */
        .content-section { padding: 80px 0; }
        
        .grid-visual {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: center;
            margin: 40px 0;
        }

        .img-premium {
            width: 100%;
            border-radius: 20px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.05);
        }

        /* High-End Product Card */
        .product-card {
            display: flex;
            background: #fff;
            border-radius: 24px;
            padding: 40px;
            margin: 60px 0;
            box-shadow: 0 10px 50px rgba(0,0,0,0.03);
            border: 1px solid rgba(0,0,0,0.05);
            transition: transform 0.4s ease;
        }

        .product-card:hover { transform: translateY(-10px); }

        .product-card img { width: 300px; object-fit: contain; margin-right: 40px; }

        .btn-premium {
            display: inline-block;
            margin-top: 20px;
            padding: 15px 35px;
            background: var(--primary);
            color: #fff !important;
            text-decoration: none;
            border-radius: 12px;
            font-weight: 600;
            transition: background 0.3s;
        }

        .btn-premium:hover { background: var(--secondary); }

        /* Modern FAQ Accordion */
        .faq-wrapper {
            background: var(--bg-soft);
            padding: 100px 0;
            border-radius: 60px 60px 0 0;
        }

        details {
            background: #fff;
            margin-bottom: 15px;
            border-radius: 15px;
            padding: 20px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.02);
        }

        summary {
            font-weight: 600;
            cursor: pointer;
            list-style: none;
            color: var(--primary);
            font-size: 1.1rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        summary::after { content: '+'; color: var(--secondary); font-size: 1.5rem; }

        details[open] summary::after { content: '−'; }

        /* Responsive */
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
            .grid-visual, .product-card { grid-template-columns: 1fr; flex-direction: column; text-align: center; }
            .product-card img { margin: 0 0 30px 0; width: 100%; }
        }