.rank-badge {
  display: inline-block;
  background: #ff6b6b;
  color: #fff;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: bold;
  margin-bottom: 8px;
}

.group {
  margin-bottom: 40px;
}

.intro p {
  font-size: 16px;
  line-height: 1.8;
}

article section {
  margin-bottom: 30px;
}

article h2 {
  border-left: 4px solid #2c5aa0;
  padding-left: 10px;
  margin-bottom: 15px;
}

article ul {
  padding-left: 0;
}

article ul li {
  padding: 8px 0;
  border-bottom: 1px solid #f0f0f0;
}

.highlight {
  background: #f0f7ff;
  padding: 20px;
  border-left: 4px solid #2c5aa0;
  border-radius: 4px;
}

.highlight p {
  font-size: 17px;
  font-weight: 500;
  color: #1a1a1a;
}