.protocol-page {
  min-height: 100vh;
  background: #f5f5f5;
}

.protocol-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px;
  display: flex;
  gap: 30px;
}

.protocol-sidebar {
  width: 200px;
  background: white;
  border-radius: 12px;
  padding: 24px;
  height: fit-content;
  position: sticky;
  top: 90px;
}

.protocol-sidebar h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 16px;
  color: #333;
}

.protocol-sidebar ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.protocol-sidebar li {
  margin-bottom: 12px;
}

.protocol-sidebar a {
  color: #666;
  text-decoration: none;
  font-size: 14px;
  cursor: pointer;
  transition: color 0.3s;
  display: block;
  padding: 8px 12px;
  border-radius: 6px;
}

.protocol-sidebar a:hover {
  color: var(--brand);
  background: #fff5f5;
}

.protocol-sidebar a.active {
  color: var(--brand);
  background: #fff5f5;
  font-weight: 500;
}

.protocol-content {
  flex: 1;
  background: white;
  border-radius: 12px;
  padding: 40px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.protocol-content h1 {
  font-size: 28px;
  font-weight: 600;
  color: #333;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--brand);
}

.protocol-content h2 {
  font-size: 20px;
  font-weight: 600;
  color: #333;
  margin-top: 32px;
  margin-bottom: 16px;
}

.protocol-content p {
  line-height: 1.8;
  color: #666;
  margin-bottom: 12px;
  font-size: 14px;
}

.protocol-content ul {
  padding-left: 24px;
  margin-bottom: 16px;
}

.protocol-content li {
  line-height: 1.8;
  color: #666;
  margin-bottom: 8px;
  font-size: 14px;
}

.protocol-footer {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid #f0f0f0;
  text-align: center;
  color: #999;
  font-size: 13px;
}

.protocol-content code {
  background: #f5f5f5;
  padding: 2px 8px;
  border-radius: 4px;
  font-family: 'Courier New', monospace;
  font-size: 13px;
  color: var(--brand);
}

.level-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
}

.level-table td {
  padding: 12px 16px;
  border: 1px solid #f0f0f0;
  font-size: 14px;
  color: #666;
}

.level-table tr:nth-child(even) {
  background: #fafafa;
}

.level-table td:first-child {
  font-weight: 500;
  color: #333;
}

@media (max-width: 768px) {
  .protocol-container {
    flex-direction: column;
  }

  .protocol-sidebar {
    width: 100%;
    position: static;
  }

  .protocol-content {
    padding: 24px;
  }

  .protocol-content h1 {
    font-size: 24px;
  }
}