.doc-container {
  max-width: 720px;
  margin: 0 auto;
  padding: 60px 40px;
}

.back-link {
  display: inline-block;
  margin-bottom: 40px;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.18s ease;
}

.back-link:hover {
  color: var(--text);
}

.doc-content {
  line-height: 1.8;
  color: var(--text);
}

.doc-content h1 {
  font-size: 2rem;
  margin-bottom: 12px;
  margin-top: 0;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.doc-content > p:nth-of-type(1) {
  color: var(--muted);
  font-size: 0.92rem;
  margin-bottom: 40px;
  margin-top: 0;
}

.doc-content h2 {
  font-size: 1.35rem;
  margin-top: 40px;
  margin-bottom: 16px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.doc-content h3 {
  font-size: 1.1rem;
  margin-top: 24px;
  margin-bottom: 12px;
  font-weight: 600;
  color: var(--text);
}

.doc-content p {
  margin-bottom: 14px;
  font-size: 0.98rem;
}

.doc-content ul {
  margin: 16px 0 16px 0;
  list-style: none;
  padding-left: 28px;
}

.doc-content li {
  margin-bottom: 10px;
  font-size: 0.98rem;
  padding-left: 12px;
  position: relative;
}

.doc-content li:before {
  content: "–";
  position: absolute;
  left: -20px;
  color: var(--muted);
}

@media (max-width: 640px) {
  .doc-container {
    padding: 40px 24px;
  }

  .doc-content h1 {
    font-size: 1.6rem;
  }

  .doc-content h2 {
    font-size: 1.2rem;
    margin-top: 32px;
  }

  .doc-content h3 {
    font-size: 1rem;
  }

  .doc-content p,
  .doc-content li {
    font-size: 0.96rem;
  }
}