:root{--nav-h: 72px;--fab-size: 64px;--fab-gap: 12px}.lc-nav-wrap{position:relative}.lc-nav{position:fixed;left:0;right:0;bottom:0;height:var(--nav-h);padding:6px 16px calc(env(safe-area-inset-bottom) + 6px);background:#fff;border-top:1px solid rgba(0,0,0,.08);display:grid;grid-template-columns:repeat(4,1fr);align-items:end;z-index:10}.lc-item{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;text-decoration:none;color:#3b4960;font-weight:800;min-width:0}.lc-item .lc-icon svg{width:22px;height:22px;fill:currentColor}.lc-item .lc-label{font-size:12px}.lc-item .lc-label.lc-muted{color:#9aa4b2}.lc-fab-group{position:fixed;left:50%;transform:translate(-50%);bottom:calc(var(--nav-h) + env(safe-area-inset-bottom) - 16px);display:flex;gap:var(--fab-gap);z-index:20;pointer-events:auto}.lc-fab{width:var(--fab-size);height:var(--fab-size);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:0 10px 22px #00000040,0 0 0 4px #fff;text-decoration:none}.lc-fab svg{width:32px;height:32px;fill:currentColor}.lc-fab.qr{background:#0a56ff}.lc-fab.coupon{background:#0f9d58}@media (max-width: 420px){:root{--nav-h: 78px}}.lc-nav,.lc-item,.lc-label{font-family:var(--font-main)}