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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.8;
  color: #2c3e50;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 20px;
  min-height: 100vh;
}

.container {
  max-width: 1000px;
  margin: 0 auto;
  background: white;
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  overflow: hidden;
}

.header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 60px 40px;
  text-align: center;
}

.header h1 {
  font-size: 3em;
  font-weight: 700;
  margin-bottom: 15px;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.header .date-info {
  font-size: 1.1em;
  opacity: 0.95;
  margin-top: 10px;
}

.content {
  padding: 60px 50px;
}

.intro {
  font-size: 1.1em;
  line-height: 1.9;
  margin-bottom: 40px;
  padding: 30px;
  background: #f8f9fa;
  border-left: 5px solid #667eea;
  border-radius: 10px;
}

.section {
  margin-bottom: 10px;
}

.section h2 {
  color: #667eea;
  font-size: 2em;
  margin-bottom: 25px;
  padding-bottom: 15px;
  border-bottom: 3px solid #e9ecef;
  font-weight: 600;
}

.section h3 {
  color: #495057;
  font-size: 1.4em;
  margin: 30px 0 15px 0;
  font-weight: 600;
}

.section p {
  margin-bottom: 20px;
  text-align: justify;
}

.section ul {
  margin: 20px 0 20px 30px;
}

.section li {
  margin-bottom: 12px;
  line-height: 1.8;
}

.divider {
  border: none;
  height: 2px;
  background: linear-gradient(to right, transparent, #667eea, transparent);
  margin: 40px 0;
}

.disclaimer-box {
  background: #fff3cd;
  border-left: 5px solid #ffc107;
  padding: 25px;
  margin: 25px 0;
  border-radius: 10px;
}

.disclaimer-box strong {
  color: #856404;
  font-size: 1.1em;
}

.critical-box {
  background: #f8d7da;
  border-left: 5px solid #dc3545;
  padding: 25px;
  margin: 25px 0;
  border-radius: 10px;
}

.critical-box strong {
  color: #721c24;
  font-size: 1.1em;
}

.info-box {
  background: #d1ecf1;
  border-left: 5px solid #17a2b8;
  padding: 25px;
  margin: 25px 0;
  border-radius: 10px;
}

.check-list {
  list-style: none;
  padding-left: 30px;
}

.check-list li {
  position: relative;
}

.check-list li::before {
  content: "✓";
  color: #28a745;
  font-weight: bold;
  position: absolute;
  left: -24px;
}

.cross-list {
  list-style: none;
  padding-left: 30px;
}

.cross-list li {
  position: relative;
}

.cross-list li::before {
  content: "✗";
  color: #dc3545;
  font-weight: bold;
  position: absolute;
  left: -24px;
}

.footer {
  background: #2c3e50;
  color: white;
  padding: 40px;
  text-align: center;
}

.footer p {
  margin: 10px 0;
}

.footer a {
  color: #667eea;
  text-decoration: none;
  font-weight: 600;
}

.footer a:hover {
  text-decoration: underline;
}

.toc {
  background: #f8f9fa;
  padding: 30px;
  border-radius: 10px;
  margin-bottom: 40px;
}

.toc h3 {
  color: #495057;
  margin-bottom: 20px;
  font-size: 1.5em;
}

.toc ul {
  list-style: none;
  padding-left: 0;
}

.toc li {
  margin-bottom: 10px;
}

.toc a {
  color: #667eea;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s;
}

.toc a:hover {
  color: #764ba2;
  padding-left: 10px;
}

@media (max-width: 768px) {
  .header h1 {
    font-size: 2em;
  }

  .content {
    padding: 30px 20px;
  }

  .section h2 {
    font-size: 1.5em;
  }

  .section h3 {
    font-size: 1.2em;
  }

  body {
    padding: 10px;
  }

  .section ul {
    margin-left: 20px;
  }

  .info-box,
  .critical-box,
  .disclaimer-box {
    padding: 15px;
  }

  .info-box ul,
  .critical-box ul,
  .disclaimer-box ul {
    margin-left: 15px;
  }

  .info-box ul ul {
    margin-left: 10px;
  }
}

.highlight {
  background: #fff3cd;
  padding: 2px 6px;
  border-radius: 3px;
}

.section strong {
  color: #495057;
  font-weight: 600;
}

.header strong {
  color: white;
}

.footer strong {
  color: white;
}

a {
  color: #667eea;
  overflow-wrap: break-word;
  word-break: normal;
}