/* Legacy browser fallback for public landing pages. Kept plain CSS for old mobile WebViews. */
:root{--background:#ffffff;--foreground:#09090b;--muted-foreground:#71717a;--border:#e4e4e7;--primary:#18181b;--primary-foreground:#fafafa;--card:#ffffff;--ring:#a1a1aa;color-scheme:light}html.dark,:root.dark,.dark{--background:#09090b;--foreground:#fafafa;--muted-foreground:#a1a1aa;--border:#27272a;--primary:#fafafa;--primary-foreground:#18181b;--card:#111113;color-scheme:dark}html{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe 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(min-width:640px){.sm\:hidden{display:none}.sm\:flex{display:flex}.sm\:w-auto{width:auto}.sm\:flex-row{flex-direction:row}.sm\:justify-end{justify-content:flex-end}.sm\:border-l{border-left:1px solid var(--border)}.sm\:border-t-0{border-top:0}.sm\:pl-5{padding-left:1.25rem}.sm\:pt-0{padding-top:0}}@media (max-width:639px){.sm\:hidden{display:flex}.sm\:flex{display:none!important}header{background:transparent}header .max-w-7xl{max-width:100%;padding-left:1.5rem;padding-right:1.5rem}section.relative.z-10{padding-top:6rem;padding-left:1.875rem;padding-right:1.875rem}.grid{display:block}.max-w-xl{max-width:100%}.text-\[clamp\(2\.25rem\,4\.5vw\,3\.25rem\)\]{font-size:2.45rem;line-height:1.18}.flex-wrap{flex-wrap:wrap}.custom-footer{text-align:center}.fixed.inset-0.z-40{background:rgba(9,9,11,.97);color:#fafafa}}@media 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/* Keep public header sign-in readable when the fallback stylesheet is active. */
html[data-legacy-css="true"] a[href="/sign-in"],
html[data-legacy-css="true"] a[href="/sign-in"] *,
html[data-legacy-css="true"] [href="/sign-in"],
html[data-legacy-css="true"] [href="/sign-in"] *{
  color:#111827!important;
  opacity:1!important;
  visibility:visible!important;
}
html[data-legacy-css="true"] a[href="/sign-in"],
html[data-legacy-css="true"] [href="/sign-in"]{
  min-width:3.25rem!important;
  background:#ffffff!important;
  border-radius:.5rem!important;
}
html[data-legacy-css="true"] a[href="/sign-in"]:empty::after,
html[data-legacy-css="true"] [href="/sign-in"]:empty::after{
  content:'登录';
  color:#111827;
}