body {
  font-family: 'Segoe UI', sans-serif;
  background-color: #f4f6f9;
  margin: 0;
  padding: 0;
}
.container {
  max-width: 640px;
  margin: 40px auto;
  background: #fff;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}
h1 {
  text-align: center;
  color: #2c3e50;
}
.subtext {
  text-align: center;
  font-size: 0.95em;
  margin-bottom: 25px;
  color: #666;
}
.question {
  margin-bottom: 20px;
}
.question label {
  font-weight: bold;
}
.option-button {
  margin: 6px 6px 0 0;
  padding: 8px 14px;
  border: 1px solid #ccc;
  background-color: #f0f0f0;
  border-radius: 6px;
  cursor: pointer;
}
.option-button.selected {
  background-color: #1abc9c;
  color: white;
  border-color: #16a085;
}
.submit-button {
  width: 100%;
  background-color: #2980b9;
  color: white;
  border: none;
  padding: 12px;
  font-size: 16px;
  border-radius: 6px;
  cursor: pointer;
  margin-top: 20px;
}
.result-box {
  margin-top: 30px;
  font-size: 1.1em;
  padding: 16px;
  background: #eef9ff;
  border-left: 5px solid #3498db;
  border-radius: 4px;
}
.green {
  color: #27ae60;
}
.red {
  color: #e74c3c;
}
.disclaimer {
  margin-top: 40px;
  font-size: 0.85em;
  color: #888;
  text-align: center;
}