body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1 { color: #d42; font-size: 2.2em; border-bottom: 3px solid #d42; padding-bottom: 10px; }
        h2 { color: #0a6; margin-top: 25px; }
        h3 { color: #63a; }
        .logo { font-size: 2em; font-weight: bold; color: #d42; letter-spacing: 2px; text-shadow: 1px 1px 2px #aaa; }
        .nav { background: #f8f8f8; padding: 10px; display: flex; flex-wrap: wrap; justify-content: space-between; }
        .nav-mobile { display: none; }
        @media (max-width: 768px) {
            .nav-desktop { display: none; }
            .nav-mobile { display: block; }
        }
        .download-btn { background: #0a6; color: white; padding: 10px 20px; border-radius: 5px; text-decoration: none; margin: 10px 0; display: inline-block; }
        .login-btn { background: #63a; color: white; padding: 10px 20px; border-radius: 5px; text-decoration: none; margin: 10px 0; display: inline-block; }
        img { max-width: 100%; height: auto; margin: 15px 0; }
        .tags { margin: 20px 0; }
        .tag { background: #eef; padding: 5px 10px; border-radius: 3px; margin: 5px; display: inline-block; }
        .footer { margin-top: 40px; padding-top: 20px; border-top: 1px solid #eee; }
        .copyright { font-size: 0.9em; color: #666; margin-top: 20px; }