body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1, h2, h3 { color: #2c3e50; margin: 25px 0 15px; }
        h1 { font-size: 2.5em; border-bottom: 3px solid #e74c3c; }
        h2 { font-size: 1.8em; border-left: 4px solid #3498db; padding-left: 10px; }
        h3 { font-size: 1.4em; color: #8e44ad; }
        .logo { font-size: 2em; font-weight: bold; color: #e74c3c; text-shadow: 2px 2px 4px rgba(0,0,0,0.1); }
        .nav { background: #2c3e50; padding: 15px; margin-bottom: 30px; }
        .nav a { color: white; text-decoration: none; margin: 0 15px; font-weight: bold; }
        .mobile-nav-btn { display: none; background: #e74c3c; color: white; border: none; padding: 10px; cursor: pointer; }
        .content-img { max-width: 100%; height: auto; margin: 20px 0; border-radius: 8px; }
        .download-btn, .login-btn { display: inline-block; padding: 12px 25px; background: #2ecc71; color: white; text-decoration: none; border-radius: 5px; margin: 15px 0; }
        .login-btn { background: #3498db; }
        .player-guide { background: #f9f9f9; padding: 20px; border-left: 5px solid #f39c12; margin: 20px 0; }
        .event-box { background: #ecf0f1; padding: 15px; border-radius: 5px; margin: 15px 0; }
        .tags { margin: 20px 0; }
        .tags a { background: #95a5a6; color: white; padding: 5px 10px; border-radius: 3px; text-decoration: none; margin-right: 5px; }
        .copyright { text-align: center; margin-top: 50px; padding-top: 20px; border-top: 1px solid #eee; }
        @media (max-width: 768px) {
            .nav { display: none; }
            .mobile-nav-btn { display: block; }
            .nav.active { display: block; }
            .nav a { display: block; padding: 10px 0; }
        }