*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  background: #fafafa;
  color: #18181b;
  line-height: 1.55;
  display: grid;
  place-items: center;
  padding: 24px;
}
main {
  width: 100%;
  max-width: 560px;
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 14px;
  padding: 40px 36px 32px;
  text-align: left;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
  color: #71717a;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.01em;
}
.brand img { display: block; }
.status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px 4px 8px;
  border-radius: 999px;
  background: #ecfdf5;
  color: #047857;
  font-size: 12px;
  font-weight: 500;
  margin-bottom: 18px;
}
.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.55);
  animation: pulse 2s ease-out infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.55); }
  70%  { box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}
h1 {
  font-size: 26px;
  font-weight: 600;
  margin: 0 0 12px;
  letter-spacing: -0.01em;
}
p { margin: 0 0 10px; color: #3f3f46; font-size: 15px; }
.hint {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid #f1f5f9;
  color: #71717a;
  font-size: 13px;
}
code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  background: #f4f4f5;
  border: 1px solid #e4e4e7;
  border-radius: 4px;
  padding: 1px 6px;
  font-size: 12.5px;
  color: #18181b;
}
footer {
  margin-top: 22px;
  color: #a1a1aa;
  font-size: 12px;
}

@media (prefers-color-scheme: dark) {
  body { background: #09090b; color: #e4e4e7; }
  main { background: #18181b; border-color: #27272a; }
  .brand { color: #a1a1aa; }
  .status { background: rgba(16, 185, 129, 0.12); color: #34d399; }
  p { color: #d4d4d8; }
  .hint { border-top-color: #27272a; color: #a1a1aa; }
  code { background: #27272a; border-color: #3f3f46; color: #e4e4e7; }
  footer { color: #71717a; }
}

@media (prefers-reduced-motion: reduce) {
  .dot { animation: none; }
}