.install-banner{position:fixed;right:24px;bottom:24px;z-index:100;display:flex;align-items:flex-start;gap:14px;width:min(430px,calc(100vw - 32px));padding:17px;border:1px solid var(--line);border-radius:16px;background:var(--panel);color:var(--text);box-shadow:0 18px 60px var(--shadow)}
.install-banner[hidden],.install-guide[hidden]{display:none}
.install-banner>img{flex:none;border-radius:12px}
.install-content{min-width:0;flex:1}
.install-content>p:first-child{margin:0;font-size:15px;font-weight:800;line-height:1.5;word-break:keep-all}
.install-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.install-actions button{min-height:38px;padding:8px 13px;border-radius:9px;font:inherit;font-size:13px;font-weight:800;cursor:pointer}
.install-action{border:1px solid var(--primary);background:var(--primary);color:var(--on-primary)}
.install-dismiss{border:1px solid var(--line);background:var(--bg);color:var(--muted)}
.install-guide{margin:12px 0 0;color:var(--muted);font-size:13px;line-height:1.5;word-break:keep-all}
.install-actions button:focus-visible{outline:3px solid var(--primary);outline-offset:2px}
@media(max-width:760px){.install-banner{right:16px;bottom:calc(16px + env(safe-area-inset-bottom,0px));padding:14px}.install-banner.above-mobile-nav{bottom:calc(82px + env(safe-area-inset-bottom,0px))}}