body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1, h2, h3 { color: #FF6B35; }
        h1 { font-size: 2.5em; }
        h2 { font-size: 1.8em; margin-top: 30px; }
        h3 { font-size: 1.4em; }
        .logo { font-size: 2em; font-weight: bold; color: #FF4500; text-align: center; margin: 20px 0; }
        nav { background: #FFD700; padding: 10px; display: flex; justify-content: space-around; flex-wrap: wrap; }
        nav a { color: #333; text-decoration: none; padding: 5px 10px; }
        .mobile-menu { display: none; background: #FFD700; padding: 10px; text-align: center; }
        img { max-width: 100%; height: auto; margin: 20px 0; }
        .btn { display: inline-block; background: #FF6B35; color: white; padding: 10px 20px; margin: 10px 0; text-decoration: none; border-radius: 5px; }
        .download-section, .login-section { text-align: center; margin: 30px 0; }
        .community-tips { background: #f9f9f9; padding: 20px; margin: 20px 0; }
        .tags { margin: 20px 0; }
        .tags a { background: #e0e0e0; padding: 5px 10px; margin: 5px; text-decoration: none; color: #333; border-radius: 3px; }
        footer { background: #333; color: white; text-align: center; padding: 20px; margin-top: 30px; }
        @media (max-width: 768px) {
            nav { display: none; }
            .mobile-menu { display: block; }
            .show-nav { display: flex; flex-direction: column; }
        }