/* Reset and base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #f8f8f8;
  padding: 0;
  margin: 0;
}

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 20px;
  background-color: #fff;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

/* Header styles */
header {
  text-align: center;
  padding: 30px 0;
  padding-top: 0;
  border-bottom: 1px solid #eee;
  margin-bottom: 30px;
}

h1 {
  font-size: 2.5rem;
  color: #2c3e50;
  margin-bottom: 10px;
}

.subtitle {
  font-size: 1.2rem;
  color: #7f8c8d;
  font-weight: 500;
}

/* Section styles */
section {
  margin-bottom: 40px;
}

.intro {
  font-size: 1.1rem;
  margin-bottom: 30px;
  text-align: justify;
  padding: 0 15px;
}

.content article {
  margin-bottom: 30px;
  padding: 0 15px;
}

h2 {
  font-size: 1.5rem;
  color: #2c3e50;
  margin-bottom: 15px;
  padding-bottom: 8px;
  border-bottom: 1px solid #eee;
}

p {
  margin-bottom: 15px;
  text-align: justify;
}

ul {
  margin-left: 25px;
  margin-bottom: 15px;
}

li {
  margin-bottom: 8px;
}

a {
  color: #3498db;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Footer styles */
footer {
  text-align: center;
  padding: 20px 0;
  border-top: 1px solid #eee;
  color: #7f8c8d;
  font-size: 0.9rem;
}

/* Responsive styles */
@media (max-width: 768px) {
  .container {
    padding: 15px;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.3rem;
  }

  .intro,
  .content article {
    padding: 0 10px;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 1.8rem;
  }

  .subtitle {
    font-size: 1rem;
  }

  h2 {
    font-size: 1.2rem;
  }
}