/* app download button: blinking + network ripple */
.app-btn{position:relative;display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:99px;background:#111;color:#fff!important;font:700 14px Poppins,sans-serif;text-decoration:none;white-space:nowrap;isolation:isolate;animation:appBlink 1.6s ease-in-out infinite}
.app-btn i{font-size:16px;color:#FF5A5A}
.app-btn::before,.app-btn::after{content:"";position:absolute;inset:0;border-radius:99px;border:2px solid #F42222;z-index:-1;opacity:0;animation:appRing 2.4s ease-out infinite}
.app-btn::after{animation-delay:1.2s}
.app-btn:hover{background:#F42222}
.app-btn:hover i{color:#fff}
@keyframes appRing{0%{transform:scale(1);opacity:.85}100%{transform:scale(1.55,1.9);opacity:0}}
@keyframes appBlink{0%,100%{box-shadow:0 0 0 0 rgba(244,34,34,.0)}50%{box-shadow:0 0 14px 3px rgba(244,34,34,.55)}}
@media(prefers-reduced-motion:reduce){.app-btn,.app-btn::before,.app-btn::after{animation:none}}