body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  background-color: #f5f5f7;
  margin: 0;
  padding: 20px;
  max-width: 900px;
  margin: 0 auto;
  color: #1d1d1f;
  line-height: 1.5;
}

.email-wrapper {
  background: white;
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  padding: 20px 24px;
  margin-bottom: 16px;
  border: 1px solid #e5e5e7;
}

.email-wrapper h2 {
  font-size: 17px;
  font-weight: 600;
  margin: 0 0 8px 0;
  color: #1d1d1f;
}

.email-wrapper p {
  margin: 4px 0;
  font-size: 14px;
  color: #1d1d1f;
}

.email-wrapper p strong {
  font-weight: 500;
  color: #86868b;
  min-width: 60px;
  display: inline-block;
}

.email-wrapper > div:first-child {
  border-bottom: 1px solid #e5e5e7;
  padding-bottom: 12px;
  margin-bottom: 16px;
}

.email-wrapper > div:last-child {
  font-size: 14px;
  line-height: 1.6;
}

iframe {
  width: 100%;
  height: 400px;
  border: none;
}

details summary {
  cursor: pointer;
  font-size: 13px;
  color: #86868b;
  margin-bottom: 4px;
  padding: 4px 0;
}

details blockquote {
  margin-left: 1rem;
  border-left: 2px solid #d2d2d7;
  padding-left: 12px;
  color: #86868b;
}

a.plain-link {
  color: inherit;
  text-decoration: none;
}

a.plain-link:hover h2 {
  color: #0071e3;
}

a {
  color: #0071e3;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}