.top-action{border:0;background:transparent;color:var(--highlight);font:10px var(--mono);cursor:pointer;padding-left:5px}
.auth-gate{position:fixed;inset:36px 0 0;background:var(--alt-bg);z-index:50;display:grid;place-items:center;background-image:linear-gradient(var(--border) 1px,transparent 1px),linear-gradient(90deg,var(--border) 1px,transparent 1px);background-size:32px 32px}
.auth-card{width:440px;padding:36px;background:#fff;box-shadow:0 16px 48px #2b2f3328}
.auth-card .auth-mark{width:24px;height:24px;margin-bottom:24px}
.auth-card h1{font-size:24px;margin:5px 0 9px}
.auth-card p{color:var(--muted);margin:0 0 22px;line-height:1.6}
.auth-error{margin-top:16px;padding:9px 11px;background:var(--warn-bg);border-left:3px solid var(--warn);color:var(--warn);font:11px var(--mono)}
@media(max-width:500px){.auth-card{width:calc(100vw - 32px);padding:24px}}