```css
.pwa-install-section{padding:40px 20px;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);border-radius:15px;margin:20px 0}.install-card{max-width:600px;margin:0 auto;text-align:center;color:white}.install-card h3{font-size:2em;margin-bottom:15px;color:white!important}.install-card p{font-size:1.2em;margin-bottom:25px;opacity:0.9}.install-button{background:#4CAF50;color:white;border:none;padding:15px 30px;font-size:1.1em;border-radius:25px;cursor:pointer;transition:all 0.3s ease;margin-bottom:20px}.install-button:hover{background:#45a049;transform:translateY(-2px)}.manual-instructions{background:rgba(255,255,255,0.1);padding:20px;border-radius:10px;margin:20px 0;text-align:left}.device-instructions h4{color:#FFD700!important;margin-bottom:10px}.device-instructions ol{padding-left:20px}.device-instructions li{margin-bottom:8px;line-height:1.5}.share-icon{background:rgba(255,255,255,0.2);padding:2px 6px;border-radius:4px;font-weight:bold}.app-features{display:flex;justify-content:center;gap:20px;flex-wrap:wrap;margin-top:20px}.feature{background:rgba(255,255,255,0.1);padding:8px 15px;border-radius:20px;font-size:0.9em}@media (max-width:768px){.app-features{flex-direction:column;align-items:center}.feature{margin-bottom:5px}}```