.ad-measurement {
  position: fixed;
  inset: auto 20px 20px auto;
  z-index: 30;
  width: min(480px, calc(100vw - 40px));
  max-height: calc(100dvh - 40px);
  overflow: auto;
  padding: 24px;
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: 0 12px 48px rgb(25 25 29 / 0.12);
  font-size: 14px;
  line-height: 1.55;
}
.ad-measurement h2 { font-size: 18px; font-weight: 550; line-height: 1.3; margin: 0 0 12px; }
.ad-measurement p { margin: 0 0 18px; }
.ad-measurement-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.ad-measurement button {
  border: 1px solid var(--ink);
  background: transparent;
  color: inherit;
  padding: 10px 14px;
  border-radius: 8px;
}
.ad-measurement button:disabled { opacity: 0.5; cursor: default; }
.ad-measurement-reopen {
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  text-decoration: underline;
  text-underline-offset: 4px;
}
body:has(dialog[open]) .ad-measurement { visibility: hidden; }
@media (max-width: 480px) {
  .ad-measurement { inset: auto 12px 12px; width: auto; padding: 20px; }
}