body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        .mobile-nav { display: none; }
        @media (max-width: 768px) {
            .desktop-nav { display: none; }
            .mobile-nav { display: block; background: #ff9900; color: white; padding: 10px; text-align: center; cursor: pointer; }
            .nav-links { display: none; }
            .nav-links.active { display: block; }
        }
        h1 { color: #ff5722; border-bottom: 3px solid #ff9900; padding-bottom: 10px; }
        h2 { color: #ff7043; margin-top: 30px; }
        h3 { color: #ff8a65; }
        .logo { font-size: 2em; font-weight: bold; color: #ff5722; text-shadow: 2px 2px 4px rgba(0,0,0,0.1); }
        .download-btn { background: #4CAF50; color: white; padding: 12px 25px; border-radius: 5px; text-decoration: none; display: inline-block; margin: 15px 0; }
        .login-btn { background: #2196F3; color: white; padding: 12px 25px; border-radius: 5px; text-decoration: none; display: inline-block; margin: 15px 10px; }
        .img-container { text-align: center; margin: 25px 0; }
        img { max-width: 100%; height: auto; border-radius: 8px; }
        .table-container { overflow-x: auto; margin: 20px 0; }
        table { width: 100%; border-collapse: collapse; }
        th, td { border: 1px solid #ddd; padding: 12px; text-align: left; }
        th { background-color: #f2f2f2; }
        .tag { background: #e0e0e0; padding: 5px 10px; border-radius: 15px; margin: 5px; display: inline-block; }
        footer { margin-top: 50px; padding: 20px; background: #f5f5f5; border-top: 2px solid #ff9900; }