* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Inter', sans-serif;
}
body {
  background-color: #fff;
  color: #000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  text-align: center;
  padding: 20px;
}
.logo {
  max-width: 140px;
  margin-bottom: 15px;
}
.container {
  background-color: #fff;
  padding: 30px;
  border-radius: 20px;
  width: 100%;
  max-width: 500px;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.05);
  position: relative;
  overflow: hidden;
}
.intro {
  font-size: 15px;
  color: #555;
  margin-bottom: 20px;
}
.question {
  display: none;
  opacity: 0;
  transition: opacity 0.5s ease;
}
.question.active {
  display: block;
  opacity: 1;
}
h1 {
  font-size: 22px;
  margin-bottom: 10px;
}
.progress {
  width: 100%;
  height: 6px;
  background-color: #eee;
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 20px;
}
.progress-bar {
  height: 100%;
  background-color: #25D366;
  width: 0%;
  transition: width 0.4s ease-in-out;
}
.points-notice {
  margin-bottom: 10px;
  font-weight: bold;
  color: #555;
}
.step-btn {
  background-color: #fafafa;
  color: #000;
  border: 1px solid #ccc;
  padding: 15px 20px;
  border-radius: 10px;
  font-weight: bold;
  font-size: 15px;
  margin: 10px 0;
  cursor: pointer;
  transition: all 0.3s ease;
  width: 100%;
  text-transform: uppercase;
}
.step-btn:hover {
  background-color: #efefef;
}
.cta-btn {
  display: none;
  margin-top: 25px;
  background-color: #25D366;
  color: white;
  padding: 15px 20px;
  border: none;
  border-radius: 10px;
  font-weight: bold;
  font-size: 16px;
  cursor: pointer;
  animation: pulse 1.5s infinite;
}
@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}
footer {
  margin-top: 20px;
  font-size: 12px;
  color: #888;
}