body {
  font-family: Arial, sans-serif;
  background: #f4f6f9;
  color: #333;
  margin: 0;
  padding: 20px;
}

.container {
  max-width: 800px;
  margin: auto;
  background: #fff;
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

h1 {
  text-align: center;
  color: #0056b3;
}

.fase {
  margin-bottom: 20px;
}

.fase h2 {
  color: #0077cc;
  margin-bottom: 10px;
}

ul {
  list-style: none;
  padding-left: 0;
}

li {
  margin: 6px 0;
}

.progreso-container {
  margin-top: 30px;
  text-align: center;
}

.barra {
  width: 100%;
  height: 20px;
  background: #ddd;
  border-radius: 10px;
  overflow: hidden;
  margin: 10px 0;
}

.relleno {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, #0077cc, #00cc88);
  transition: width 0.3s ease;
}