h1 {
      color: #2c3e50;
      font-size: 28px;
      text-align: center;
      margin-bottom: 20px;
      border-bottom: 2px solid #e74c3c;
      padding-bottom: 10px;
    }
    .intro {
      font-style: italic;
      margin-bottom: 25px;
      color: #555;
    }
    h2 {
      color: #e74c3c;
      font-size: 22px;
      margin-top: 30px;
    }
    .exercise {
      margin-bottom: 25px;
    }
    .exercise-name {
      font-weight: bold;
      font-size: 18px;
      color: #2c3e50;
    }
    .superset {
      background-color: #f2f2f2;
      padding: 12px;
      border-left: 4px solid #e74c3c;
      margin: 10px 0;
    }
    table {
      width: 100%;
      border-collapse: collapse;
      margin: 15px 0;
    }
    th, td {
      padding: 10px;
      text-align: center;
      border: 1px solid #ccc;
    }
    th {
      background-color: #e74c3c;
      color: white;
    }
    .tip2 {
      background-color: #fff8e1;
      padding: 12px;
      border-left: 4px solid #f57f17;
      font-style: italic;
      margin: 20px 0;
    }
    .how-to {
      background-color: #e8f5e9;
      padding: 12px;
      border-left: 4px solid #4caf50;
      margin: 15px 0;
    }
.tip {
      background: white;
      border-radius: 0px;
      padding: 20px;
      margin-bottom: 25px;
      box-shadow: 0 2px 6px rgba(0,0,0,0.05);
      border-left: 4px solid #e74c3c;
    }
   .tip-number {
  font-weight: bold;
  font-size: 32px;
  color: #e74c3c;
  margin-right: 8px;
  display: inline;
}
    .tip-title {
      font-size: 20px;
      font-weight: bold;
      color: #2c3e50;
      display: inline-block;
      vertical-align: middle;
    }
    .tip-content {
      margin-top: 12px;
      font-size: 16px;
    }
    blockquote {
      font-style: italic;
      color: #555;
      border-left: 3px solid #bdc3c7;
      padding-left: 16px;
      margin: 20px 0;
    }
    .footer-note {
      font-size: 15px;
      color: #7f8c8d;
      text-align: center;
      margin-top: 40px;
      font-style: italic;
    }
.qna {
      margin-bottom: 25px;
    }
    .question {
      font-weight: bold;
      font-size: 18px;
      color: #1a5276;
      margin-bottom: 8px;
    }
    .answer {
      font-size: 16px;
      color: #34495e;
    }

.section {
      margin-bottom: 30px;
    }
    .section-title2 {
      font-size: 20px;
      color: #8e44ad;
      font-weight: bold;
      margin: 25px 0 12px 0;
      padding-bottom: 6px;
      border-bottom: 2px solid #e8daef;
    }

.tip-sheet {
      background-color: #f8f4fc;
      padding: 16px;
      border-radius: 6px;
      font-size: 15px;
      margin-top: 20px;
    }
    .tip-sheet h3 {
      margin-top: 0;
      color: #8e44ad;
      font-size: 18px;
    }
.tip-sheet li {
      margin-left: 10px;
      color: #8e44ad;
      font-size: 18px;
    }

 blockquote {
      background: #f2eaf5;
      padding: 14px;
      border-left: 4px solid #9b59b6;
      font-style: italic;
      margin: 20px 0;
      color: #555;
    }

 .tab-le {
      width: 100%;
      border-collapse: collapse;
      margin: 20px 0;
    }
   .tab-le th, td {
      padding: 12px;
      text-align: center;
      border: 1px solid #ccc;
    }
    .tab-le th {
      background-color: #f4ecf7;
      color: #6c3483;
    }