body { font-family: 'Arial', 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: 2px 2px 4px rgba(0,0,0,0.1); }
        nav { background: #f8f8f8; padding: 15px; margin-bottom: 30px; border-radius: 8px; }
        .mobile-nav-toggle { display: none; cursor: pointer; }
        @media (max-width: 768px) {
            .mobile-nav-toggle { display: block; position: absolute; top: 20px; right: 20px; }
            nav.mobile-hidden { display: none; }
        }
        h1 { color: #FF4500; border-bottom: 3px solid #FFD700; padding-bottom: 10px; }
        h2 { color: #008000; margin-top: 30px; }
        h3 { color: #1E90FF; }
        .download-btn { background: #4CAF50; color: white; padding: 12px 25px; border-radius: 6px; text-decoration: none; display: inline-block; margin: 15px 0; }
        .login-btn { background: #2196F3; color: white; padding: 12px 25px; border-radius: 6px; text-decoration: none; display: inline-block; margin: 15px 10px; }
        .image-container { text-align: center; margin: 25px 0; }
        img { max-width: 100%; height: auto; border-radius: 8px; }
        .tag { background: #f0f0f0; padding: 5px 10px; border-radius: 20px; margin: 5px; display: inline-block; }
        footer { margin-top: 50px; padding-top: 20px; border-top: 1px solid #eee; }
        .copyright { text-align: center; margin-top: 20px; color: #777; }