main {
  width: min(900px, 92vw);
  margin: 1.5rem auto 2rem;
  padding: 0;
  line-height: 1.55;
  color: #333;
}

.back-button {
  display: inline-block;
  margin: 1.25rem 1rem 0;
  padding: 0.35rem 0.6rem;
  border-radius: 0.5rem;
  text-decoration: none;
  color: #4b4b4b;
  font-size: 1.1rem;
  font-weight: 700;
  transition: color 0.2s ease;
}

.back-button:hover {
  color: #222;
}

.bio-box {
  border-radius: 1rem;
  padding: 2rem;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.18);
  background: #fafafa;
}

.bio-top {
  margin-bottom: 1.25rem;
}

.bio-title {
  text-align: center;
}

.bio-title h1 {
  margin: 0 0 0.35rem;
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.1;
}

.bio-title h2 {
  margin: 0;
  font-weight: 400;
  color: #555;
  font-size: clamp(1.25rem, 3vw, 2rem);
  line-height: 1.2;
}

.bio {
  font-size: clamp(1rem, 1.7vw, 1.2rem);
  margin: 0 0 1.5rem;
  text-align: center;
}

.contact-info {
  border-top: 1px solid #ddd;
  padding-top: 1rem;
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  color: #666;
  text-align: center;
}

.contact-info a {
  color: #666;
  text-decoration: none;
}

.contact-info a:hover {
  text-decoration: underline;
}

@media (max-width: 640px) {
  .back-button {
    margin-left: 0.75rem;
    font-size: 1rem;
  }

  .bio-box {
    padding: 1.25rem;
  }
}