.pwa-install-btn{position:relative}
.pwa-install-btn::after{content:"";position:absolute;right:2px;top:2px;width:7px;height:7px;border-radius:50%;background:#7fd7ff;box-shadow:0 0 12px rgba(127,215,255,.85);opacity:0;transform:scale(.6);transition:opacity .2s ease,transform .2s ease}
.pwa-install-btn.install-ready::after{opacity:1;transform:scale(1)}
.pwa-install-btn.is-installed{color:#8ee6b8;border-color:rgba(142,230,184,.36)}
.pwa-install-overlay{position:fixed;inset:0;z-index:1000;display:grid;place-items:center;padding:18px;background:rgba(1,4,7,.76);backdrop-filter:blur(18px);opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease}
.pwa-install-overlay.is-open{opacity:1;visibility:visible}
.pwa-install-card{position:relative;width:min(440px,100%);overflow:hidden;padding:30px;border:1px solid rgba(177,225,251,.24);border-radius:28px;background:linear-gradient(155deg,rgba(15,29,42,.98),rgba(3,8,13,.99));box-shadow:0 38px 120px rgba(0,0,0,.72),0 0 55px rgba(91,190,244,.12);transform:translateY(16px) scale(.985);transition:transform .24s cubic-bezier(.2,.8,.2,1)}
.pwa-install-overlay.is-open .pwa-install-card{transform:none}
.pwa-install-card::before{content:"";position:absolute;inset:-40% -20% auto;height:66%;background:radial-gradient(circle at center,rgba(86,184,239,.2),transparent 68%);pointer-events:none}
.pwa-install-close{position:absolute;z-index:2;right:14px;top:14px;width:38px;height:38px;display:grid;place-items:center;border:1px solid rgba(177,225,251,.17);border-radius:50%;background:rgba(5,12,19,.7);color:#d9f3ff;cursor:pointer}
.pwa-install-close svg{width:17px;height:17px;fill:currentColor}
.pwa-install-icon{position:relative;z-index:1;width:74px;height:74px;display:grid;place-items:center;margin:0 auto 18px;border:1px solid rgba(197,235,255,.24);border-radius:23px;background:linear-gradient(145deg,rgba(233,249,255,.16),rgba(83,180,234,.12));box-shadow:0 18px 48px rgba(0,0,0,.35),0 0 30px rgba(94,196,246,.13)}
.pwa-install-icon img{width:58px;height:58px;border-radius:18px}
.pwa-install-card h2{position:relative;z-index:1;margin:0;text-align:center;font-family:Georgia,"Times New Roman",serif;font-size:clamp(1.8rem,7vw,2.55rem);line-height:1.02}
.pwa-install-card p{position:relative;z-index:1;margin:14px auto 0;max-width:350px;text-align:center;color:#aebdca;font-size:.92rem}
.pwa-install-steps{position:relative;z-index:1;display:grid;gap:9px;margin:22px 0 0;padding:0;list-style:none;counter-reset:pwa-step}
.pwa-install-steps li{counter-increment:pwa-step;display:grid;grid-template-columns:30px 1fr;align-items:center;gap:10px;padding:11px 13px;border:1px solid rgba(177,225,251,.11);border-radius:15px;background:rgba(255,255,255,.025);color:#d7e2ea;font-size:.84rem}
.pwa-install-steps li::before{content:counter(pwa-step);width:28px;height:28px;display:grid;place-items:center;border-radius:50%;background:rgba(111,203,250,.13);color:#caeeff;font-weight:850}
.pwa-install-actions{position:relative;z-index:1;display:grid;grid-template-columns:1fr;gap:10px;margin-top:22px}
.pwa-install-primary,.pwa-install-secondary{min-height:49px;display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:0 18px;border-radius:999px;font-weight:850;cursor:pointer}
.pwa-install-primary{border:0;background:linear-gradient(135deg,#f2fbff,#83d3fb);color:#041018;box-shadow:0 16px 34px rgba(0,0,0,.28)}
.pwa-install-secondary{border:1px solid rgba(177,225,251,.21);background:rgba(7,16,25,.74);color:#e8f8ff}
.pwa-install-primary[hidden],.pwa-install-secondary[hidden],.pwa-install-steps[hidden]{display:none!important}
@media(max-width:560px){.pwa-install-card{padding:28px 20px 22px;border-radius:24px}.pwa-install-icon{width:66px;height:66px}.pwa-install-icon img{width:52px;height:52px}}
@media(prefers-reduced-motion:reduce){.pwa-install-overlay,.pwa-install-card,.pwa-install-btn::after{transition:none}}