body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        .logo { font-size: 28px; font-weight: bold; color: #FF4500; text-shadow: 1px 1px 2px rgba(0,0,0,0.2); }
        nav { background: #f8f8f8; padding: 10px; margin-bottom: 20px; border-radius: 5px; }
        nav a { margin: 0 10px; text-decoration: none; color: #0066cc; }
        .mobile-nav-btn { display: none; }
        h1 { color: #FF4500; border-bottom: 2px solid #FF4500; padding-bottom: 10px; }
        h2 { color: #0066cc; margin-top: 30px; }
        h3 { color: #333; margin-top: 25px; }
        .btn { display: inline-block; padding: 10px 20px; background: #FF4500; color: white; border-radius: 5px; text-decoration: none; margin: 10px 0; }
        .download-section { background: #f0f8ff; padding: 20px; border-radius: 5px; margin: 20px 0; }
        .player-guide { background: #fff8e1; padding: 20px; border-radius: 5px; margin: 20px 0; }
        img { max-width: 100%; height: auto; border-radius: 5px; margin: 15px 0; }
        .copyright { text-align: center; margin-top: 40px; padding: 20px; background: #f8f8f8; }
        @media (max-width: 768px) {
            .mobile-nav-btn { display: block; background: #FF4500; color: white; padding: 10px; border: none; border-radius: 5px; margin-bottom: 10px; }
            .nav-links { display: none; }
            .nav-links.active { display: block; }
            nav { position: relative; }
        }