*{margin:0;padding:0;box-sizing:border-box;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}html,body{width:100%;height:100dvh;height:100vh;background:#000;overflow:hidden;position:fixed;top:0;left:0}@supports (height: 100dvh){html,body{height:100dvh}}#game-container{width:100%;height:100%;position:relative}canvas{display:block;-webkit-tap-highlight-color:transparent;-webkit-touch-callout:none;touch-action:manipulation}#install-banner{position:fixed;top:0;left:0;right:0;z-index:9999;display:flex;align-items:center;gap:12px;padding:14px 16px;background:linear-gradient(135deg,#2d1b4e,#1a0a2e);border-bottom:1px solid rgba(255,215,0,.3);box-shadow:0 4px 20px #00000080;transform:translateY(-100%);opacity:0;transition:transform .3s ease-out,opacity .3s ease-out;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}#install-banner.install-banner-show{transform:translateY(0);opacity:1}#install-banner.install-banner-hide{transform:translateY(-100%);opacity:0}.install-banner-icon{width:48px;height:48px;border-radius:12px;flex-shrink:0}.install-banner-text{flex:1;min-width:0}.install-banner-title{font-size:15px;font-weight:700;color:gold}.install-banner-desc{font-size:12px;color:#ffffffb3;margin-top:2px}.install-banner-btn{flex-shrink:0;padding:8px 18px;background:gold;color:#1a0a2e;border:none;border-radius:20px;font-size:14px;font-weight:700;cursor:pointer;-webkit-tap-highlight-color:transparent}.install-banner-btn:active{background:#e6c200}.install-banner-close{position:absolute;top:6px;right:8px;background:none;border:none;color:#ffffff80;font-size:16px;padding:4px 8px;cursor:pointer;-webkit-tap-highlight-color:transparent}.install-banner-ios-hint{flex-shrink:0;font-size:12px;color:#fffc;line-height:1.5;text-align:center}.install-ios-share-icon{display:inline-block;width:18px;height:18px;vertical-align:middle;margin:0 2px}