:root{--site-install-ink:#17201d;--site-install-accent:#176b58;--site-install-line:#d8dfdc}
.site-install{position:fixed;right:max(18px,env(safe-area-inset-right));bottom:max(18px,env(safe-area-inset-bottom));z-index:900}
.site-install__button{display:flex;min-height:44px;align-items:center;gap:9px;padding:10px 14px;border:1px solid var(--site-install-line);border-radius:6px;background:#fff;color:var(--site-install-ink);box-shadow:0 8px 24px rgba(23,32,29,.16);font:inherit;font-size:.88rem;font-weight:800;letter-spacing:0;cursor:pointer}
.site-install__button:hover{border-color:var(--site-install-accent);color:var(--site-install-accent)}
.site-install__button:focus-visible,.site-install__dialog button:focus-visible{outline:3px solid rgba(23,107,88,.28);outline-offset:2px}
.site-install__icon{font-size:1.15rem;line-height:1}
.site-install__dialog{width:min(420px,calc(100% - 28px));padding:0;border:1px solid var(--site-install-line);border-radius:8px;background:#fff;color:var(--site-install-ink);box-shadow:0 22px 60px rgba(23,32,29,.24)}
.site-install__dialog::backdrop{background:rgba(23,32,29,.58)}
.site-install__dialog-inner{padding:24px}
.site-install__dialog h2{margin:0 0 10px;font-size:1.35rem;line-height:1.25}
.site-install__dialog p{margin:0;color:#5d6965;line-height:1.65}
.site-install__dialog button{margin-top:20px;padding:9px 14px;border:1px solid var(--site-install-line);border-radius:6px;background:#fff;color:var(--site-install-ink);font:inherit;font-weight:800;cursor:pointer}
@media(max-width:640px){.site-install{right:14px;bottom:max(14px,env(safe-area-inset-bottom))}.site-install__button{min-height:42px;padding:9px 12px;font-size:.82rem}}
@media(prefers-reduced-motion:reduce){.site-install__button{scroll-behavior:auto}}