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

html, body {
  font-family: 'Segoe UI', Arial, sans-serif;
  line-height: 1.6;
  background-color: #f9f9f9;
  color: #333;
}

header, footer {
  text-align: center;
  padding: 2rem 1rem;
  background: linear-gradient(135deg, #2c3e50, #1a5276);
  color: #fff;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

header h1 {
  font-size: 2.2rem;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

header p {
  font-size: 1.1rem;
  opacity: 0.9;
}

footer {
  margin-top: 2rem;
  padding: 1.5rem 1rem;
}

footer p {
  font-size: 0.9rem;
  opacity: 0.8;
  margin: 0.5rem 0;
}

.protocol-section {
  max-width: 800px;
  margin: 2rem auto;
  padding: 1.5rem 2rem;
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 3px 10px rgba(0,0,0,0.08);
  border-left: 4px solid #3498db;
}

.protocol-section h2 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: #2c3e50;
  border-bottom: 1px solid #eee;
  padding-bottom: 0.5rem;
}

.protocol-section h3 {
  font-size: 1.2rem;
  margin: 1rem 0 0.5rem;
  color: #2c3e50;
}

.protocol-section p,
.protocol-section ul {
  margin: 0.8rem 0;
  font-size: 1rem;
}

.protocol-section ul {
  list-style: none;
  padding-left: 1.5rem;
}

.protocol-section ul li {
  margin: 0.5rem 0;
  position: relative;
}

.protocol-section ul li:before {
  content: "•";
  color: #3498db;
  font-weight: bold;
  position: absolute;
  left: -1rem;
}

.protocol-section ul ul {
  margin-top: 0.3rem;
}

pre {
  background-color: #272c34;
  color: #f8f8f2;
  padding: 1.2rem;
  border-radius: 6px;
  overflow-x: auto;
  font-size: 0.95rem;
  margin: 1rem 0;
  box-shadow: inset 0 0 5px rgba(0,0,0,0.2);
}

code {
  background-color: #f0f2f5;
  padding: 0.2rem 0.4rem;
  border-radius: 3px;
  font-family: Menlo, Monaco, 'Courier New', monospace;
  font-size: 0.9rem;
  color: #e74c3c;
}

.highlight-box {
  background-color: rgba(52, 152, 219, 0.1);
  border-radius: 6px;
  padding: 1rem;
  margin: 1rem 0;
  border-left: 3px solid #3498db;
}

.warning-box {
  background-color: rgba(231, 76, 60, 0.1);
  border-radius: 6px;
  padding: 1rem;
  margin: 1rem 0;
  border-left: 3px solid #e74c3c;
}

.success-box {
  background-color: rgba(46, 204, 113, 0.1);
  border-radius: 6px;
  padding: 1rem;
  margin: 1rem 0;
  border-left: 3px solid #2ecc71;
}

@media (max-width: 768px) {
  .protocol-section {
    padding: 1rem;
    margin: 1.5rem 1rem;
  }
  
  header h1 {
    font-size: 1.8rem;
  }
  
  pre {
    padding: 0.8rem;
    font-size: 0.85rem;
  }
}