*{margin:0;padding:0;box-sizing:border-box}body{padding:0;font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;background:url('https://images.gptkong.com/cloud/background.png') repeat-y;background-size:100% auto;background-position:top center;color:#333;line-height:1.6}nav{width:100%;background:linear-gradient(135deg,#a1c4fd,#c2e9fb);display:flex;align-items:center;padding:1px 20px;position:fixed;top:0;left:0;z-index:1000;box-shadow:0 2px 4px rgba(0,0,0,0.1)}nav img{width:40px;height:40px;margin:5px 30px 5px 5px}nav ul{list-style:none;display:flex;margin-right:30px}nav ul li{margin:0 15px}nav ul li a{text-decoration:none;color:#fff;font-size:16px;transition:color 0.3s}nav ul li a:hover{color:#000}@media (max-width:768px){nav ul{display:none}}#brandInfoTable{max-width:960px;margin:80px auto 40px auto;width:90%;background:rgba(255,255,255,0.9);border-collapse:collapse;box-shadow:0 4px 6px rgba(0,0,0,0.1);border-radius:8px;overflow:hidden}#brandInfoTable th{background:linear-gradient(135deg,#74ebd5,#acb6e5);color:#fff;padding:12px;text-align:left;white-space:nowrap;font-size:16px}#brandInfoTable td{padding:12px;word-wrap:break-word;white-space:normal;border-bottom:1px solid #ddd}.market-positioning-table{max-width:960px;margin:40px auto;width:90%;background:rgba(245,245,245,0.95);border-collapse:collapse;box-shadow:0 4px 6px rgba(0,0,0,0.1);border-radius:8px;overflow:hidden}.market-positioning-table th,.market-positioning-table td{padding:12px;text-align:center;border:1px solid #ccc}.chapter-nav{max-width:960px;margin:20px auto;padding:20px;background:rgba(255,255,255,0.8);border-radius:8px;box-shadow:0 2px 4px rgba(0,0,0,0.1)}.chapter-nav ul{list-style:none;display:flex;flex-wrap:wrap;gap:10px;justify-content:center}.chapter-nav ul li a{text-decoration:none;color:#3498db;background:linear-gradient(135deg,#74ebd5,#acb6e5);padding:10px 15px;border-radius:20px;transition:background 0.3s,color 0.3s;font-size:14px}.chapter-nav ul li a:hover{background:#fff;color:#3498db;box-shadow:0 2px 4px rgba(0,0,0,0.2)}article{max-width:960px;margin:20px auto;padding:20px;background:rgba(255,255,255,0.95);border-radius:8px;box-shadow:0 4px 6px rgba(0,0,0,0.1)}section{margin-bottom:40px;padding:20px;background:linear-gradient(135deg,#e0f7fa,#fff);border-radius:8px;box-shadow:0 2px 4px rgba(0,0,0,0.05)}section h2{font-size:24px;color:#2c3e50;margin-bottom:15px;position:relative;padding-bottom:10px}section h2::after{content:'';width:50px;height:3px;background:#3498db;position:absolute;bottom:0;left:0;border-radius:2px}section p{font-size:16px;color:#555;margin-bottom:15px;text-align:justify}article img{display:block;max-width:90%;width:100%;height:auto;margin:20px auto;border-radius:10px;box-shadow:0 4px 8px rgba(0,0,0,0.1);transition:transform 0.3s,box-shadow 0.3s}article img:hover{transform:scale(1.02);box-shadow:0 6px 12px rgba(0,0,0,0.2)}#brand-product-list{max-width:960px;margin:40px auto;padding:20px;display:flex;flex-wrap:wrap;gap:20px;background:rgba(245,245,245,0.95);border-radius:8px;justify-content:center}#brand-product-list li{list-style:none;width:calc(25% - 20px);background:#fff;border:1px solid #ddd;border-radius:8px;overflow:hidden;transition:transform 0.3s,box-shadow 0.3s}#brand-product-list li:hover{transform:translateY(-5px);box-shadow:0 4px 12px rgba(0,0,0,0.15)}#brand-product-list .product-image img{width:100%;height:auto;display:block}#brand-product-list .product-name{padding:10px;text-align:center;font-size:16px;color:#333}#brand-related-list{max-width:960px;margin:40px auto;width:90%;background:rgba(255,255,255,0.9);border-collapse:collapse;box-shadow:0 4px 6px rgba(0,0,0,0.1);border-radius:8px;overflow:hidden}#brand-related-list caption{caption-side:top;font-size:20px;margin:10px 0;color:#2c3e50}#brand-related-list th,#brand-related-list td{padding:12px;text-align:left;border:1px solid #ccc}#brand-related-list th{background:linear-gradient(135deg,#74ebd5,#acb6e5);color:#fff}.brand-feedback{max-width:960px;margin:40px auto;display:flex;justify-content:center;gap:20px}.brand-feedback .btn{display:flex;align-items:center;background:#3498db;color:#fff;padding:10px 20px;border:none;border-radius:25px;text-decoration:none;font-size:16px;cursor:pointer;transition:background 0.3s}.brand-feedback .btn:hover{background:#2980b9}.brand-feedback img{margin-right:10px}@media (max-width:1200px){#brand-product-list li{width:calc(33.333% - 20px)}}@media (max-width:900px){#brand-product-list li{width:calc(50% - 20px)}}@media (max-width:600px){#brand-product-list li{width:100%}}