:root {
  --c-deepfake: #6c5ce7;
  --c-verify: #0984e3;
  --c-algo: #00b894;
  --c-scam: #e17055;
  --c-privacy: #636e72;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, -apple-system, "PingFang TC", sans-serif; }
.ad-header { padding: 12px 16px; }
.ad-nav { display: flex; flex-wrap: wrap; gap: 8px; }
main { padding: 12px 16px; max-width: 720px; margin: 0 auto; }
@media (max-width: 390px) {
  main { padding: 8px 10px; }
}

button { display: block; margin: 6px 0; padding: 8px 12px; }
#ad-nav a { margin-right: 10px; }
ul { padding-left: 20px; }