/* Base reset */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* Typography & layout */
body {
  font-family: -apple-system, BlinkMacSystemFont, sans-serif;
  color: #222;
  background: #fafafa;
  line-height: 1.6;
  padding: 1rem;
}
h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}
h2 {
  font-size: 1.8rem;
  margin-top: 2rem;
  margin-bottom: 0.5rem;
  border-bottom: 1px solid #ccc;
  padding-bottom: 0.3rem;
}
.subtitle {
  font-style: italic;
  color: #555;
  margin-bottom: 2rem;
  font-size: 1rem;
}
blockquote {
  margin: 1.5rem 0;
  padding-left: 1rem;
  border-left: 4px solid #888;
  color: #555;
  font-style: italic;
}
section p, section ul, section ol {
  margin-bottom: 1rem;
}
ul, ol {
  padding-left: 1.2rem;
}
.trigger {
  font-weight: bold;
  margin: 2rem 0;
  text-align: center;
}
.visually-hidden {
  position: absolute;
  clip: rect(0 0 0 0);
  width: 1px;
  height: 1px;
  overflow: hidden;
  white-space: nowrap;
}

/* Footer */
footer {
  margin-top: 2rem;
  text-align: center;
  font-size: 0.9rem;
}
footer a {
  color: #007aff;
  text-decoration: none;
}
footer a:hover {
  text-decoration: underline;
}