.ab-scope {
  --ab-background: #FBFBFC;
  --ab-surface: #F2F3F6;
  --ab-border: #DFE2E8;
  --ab-text-primary: #16181D;
  --ab-text-secondary: #454A54;
  --ab-text-muted: #7C838F;
  --ab-primary: #2F6BE4;
  /* Foreground for filled buttons. Tracks --ab-primary so the pair always
     clears WCAG AA; white fails against the lighter dark-mode blue. */
  --ab-on-primary: #FFFFFF;

  box-sizing: border-box;
  background: var(--ab-background);
  color: var(--ab-text-primary);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica,
    Arial, sans-serif;
  font-size: 16.5px;
  line-height: 1.65;
  min-height: 100vh;
}

.ab-scope *,
.ab-scope *::before,
.ab-scope *::after {
  box-sizing: border-box;
}

.ab-scope .wrap {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 26px 80px;
}

.ab-scope header.site {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px 0;
}

.ab-scope .wordmark {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ab-text-primary);
  text-decoration: none;
}

.ab-scope nav.site a {
  color: var(--ab-text-muted);
  text-decoration: none;
  font-size: 14px;
  margin-left: 20px;
}

.ab-scope nav.site a:hover {
  color: var(--ab-primary);
}

.ab-scope .cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--ab-primary);
  color: var(--ab-on-primary);
  text-decoration: none;
  font-size: 16px;
  font-weight: 600;
  padding: 13px 26px;
  border-radius: 999px;
  margin: 6px 0 4px;
}

.ab-scope .cta:hover {
  opacity: 0.92;
}

.ab-scope h1 {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 8px 0 6px;
}

.ab-scope h2 {
  font-size: 20px;
  font-weight: 650;
  letter-spacing: -0.01em;
  margin: 40px 0 10px;
  padding-top: 22px;
  border-top: 1px solid var(--ab-border);
}

.ab-scope p,
.ab-scope li {
  color: var(--ab-text-secondary);
}

.ab-scope strong {
  color: var(--ab-text-primary);
  font-weight: 650;
}

.ab-scope a {
  color: var(--ab-primary);
}

.ab-scope ul {
  padding-left: 20px;
}

.ab-scope li {
  margin-bottom: 8px;
}

.ab-scope .meta {
  color: var(--ab-text-muted);
  font-size: 13.5px;
  margin-top: -2px;
}

.ab-scope .callout {
  background: var(--ab-surface);
  border: 1px solid var(--ab-border);
  border-radius: 12px;
  padding: 14px 18px;
  margin: 24px 0;
}

.ab-scope .callout p {
  margin: 0;
}

.ab-scope footer.site {
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid var(--ab-border);
  color: var(--ab-text-muted);
  font-size: 13px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

.ab-scope footer.site a {
  color: var(--ab-text-muted);
}

@media (prefers-color-scheme: dark) {
  .ab-scope {
    --ab-background: #101216;
    --ab-surface: #191C22;
    --ab-border: #2A2E37;
    --ab-text-primary: #F2F3F5;
    --ab-text-secondary: #B6BCC7;
    --ab-text-muted: #7C838F;
    --ab-primary: #6C9BFF;
    --ab-on-primary: #101216;
  }
}