*{margin:0;padding:0;box-sizing:border-box;font-family:Arial,sans-serif}
        .acoustic-container{max-width:1200px;margin:0 auto;padding:15px;color:#333;line-height:1.8}
        .acoustic-banner{background:linear-gradient(90deg,#0f4c81,#1a73e8);color:#fff;padding:35px 20px;border-radius:10px;margin-bottom:25px;text-align:center}
        .acoustic-banner h1{font-size:26px;margin-bottom:10px}
        .acoustic-banner p{font-size:16px;opacity:.9;margin-bottom:5px}
        .section-title{font-size:20px;color:#0f4c81;border-left:5px solid #1a73e8;padding-left:12px;margin:30px 0 15px}
        .product-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:15px;margin:20px 0}
        .product-card{background:#f8f9fa;border:1px solid #eee;border-radius:8px;padding:18px;text-align:center}
        .product-card h3{font-size:16px;color:#0f4c81;margin-bottom:8px}
        .flagship{background:#fff;border:2px solid #1a73e8;padding:22px;border-radius:10px;margin:25px 0}
        .flagship h2{color:#d32f2f;font-size:20px;margin-bottom:15px;text-align:center}
        .param-table{width:100%;border-collapse:collapse;margin:20px 0}
        .param-table th,.param-table td{border:1px solid #ddd;padding:11px;text-align:left;font-size:14px}
        .param-table th{background:#f2f7ff;color:#0f4c81}
        .contact-box{background:#f2f7ff;border-radius:10px;padding:25px;text-align:center;margin:30px 0}
        .contact-box h3{color:#0f4c81;margin-bottom:10px;font-size:18px}
        .contact-box a{font-size:16px;font-weight:bold;color:#d32f2f;text-decoration:none;margin:5px 0}
        .tag-group{display:flex;flex-wrap:wrap;gap:8px;margin:15px 0}
        .tag{background:#e3f2fd;color:#0f4c81;padding:6px 14px;border-radius:20px;font-size:13px}
        @media(max-width:768px){.acoustic-banner h1{font-size:22px}.section-title{font-size:18px}}