body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 20px;
  background: #f6f8fb;
  color: #333;
}

h1,
h2 {
  margin-bottom: 12px;
  color: #1a1a1a;
  font-weight: 600;
}

.container {
  display: flex;
  gap: 30px;
  margin-top: 20px;
}

.left-column {
  width: 55%;
}

.right-column {
  width: 45%;
}

@media (max-width: 900px) {
  .container {
    flex-direction: column;
  }

  .left-column,
  .right-column {
    width: 100%;
  }
}

.explanation-section {
  background: #ffffff;
  padding: 20px;
  border-radius: 10px;
  border: 1px solid #d8dce3;
  margin-bottom: 40px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
}

.explanation-section h2 {
  margin-bottom: 14px;
}

.explanation-section h3 {
  margin-top: 18px;
  color: #005fcc;
}

.explanation-section ul {
  padding-left: 20px;
}

[role="tablist"] {
  display: flex;
  gap: 10px;
  margin-bottom: 15px;
  flex-wrap: wrap;
}

[role="tab"] {
  padding: 10px 18px;
  background: #e6e6e6;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 15px;
  transition: all 0.2s ease;
}

[role="tab"][aria-selected="true"] {
  background: #0078ff;
  color: #fff;
  outline: 2px solid #005fcc;
}

[role="tab"]:focus {
  outline-offset: 2px;
}

[role="tabpanel"] {
  background: white;
  padding: 15px;
  border: 1px solid #ccd3dd;
  border-radius: 6px;
  margin-bottom: 25px;
}

[role="tabpanel"][hidden] {
  display: none;
}

.code-block {
  background: #1e1e1e;
  color: #e4e4e4;
  padding: 18px;
  border-radius: 8px;
  overflow-x: auto;
  border: 1px solid #333;
  margin-bottom: 20px;
}

.code-block code {
  font-family: Consolas, monospace;
  font-size: 14px;
  white-space: pre;
}

.exeception {
  margin-top: 40px;
}