body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1 { color: #FF4500; border-bottom: 3px solid #FFD700; padding-bottom: 10px; }
        h2 { color: #8B4513; margin-top: 30px; }
        h3 { color: #20B2AA; }
        .logo { font-size: 2.5em; font-weight: bold; color: #FF6347; text-shadow: 2px 2px 4px rgba(0,0,0,0.2); }
        .nav-mobile { display: none; background: #FFF8DC; padding: 10px; }
        .download-btn { background: #4CAF50; color: white; padding: 12px 24px; border-radius: 5px; text-decoration: none; display: inline-block; margin: 15px 0; }
        .login-btn { background: #2196F3; color: white; padding: 12px 24px; border-radius: 5px; text-decoration: none; display: inline-block; margin: 15px 0; }
        img { max-width: 100%; height: auto; margin: 20px 0; }
        table { width: 100%; border-collapse: collapse; margin: 20px 0; }
        th, td { border: 1px solid #ddd; padding: 8px; text-align: left; }
        th { background-color: #f2f2f2; }
        @media (max-width: 768px) {
            .nav-desktop { display: none; }
            .nav-mobile { display: block; }
        }