* {
  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: #f9f9f9;
}

header {
  background-color: #921213;
  color: white;
  padding: 20px 0;
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

nav h1 {
  font-size: 28px;
}

nav a {
  color: white;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
}

nav a:hover {
  color: #C9C8C9;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 20px;
  background-color: white;
  margin-top: 60px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

h1 {
  color: #921213;
  margin-top: 30px;
  margin-bottom: 20px;
  font-size: 36px;
  border-bottom: 3px solid #921213;
  padding-bottom: 15px;
}

h2 {
  color: #921213;
  margin-top: 30px;
  margin-bottom: 15px;
  font-size: 22px;
}

p {
  margin-bottom: 15px;
  color: #555;
  text-align: justify;
}

p strong {
  color: #921213;
}

a {
  color: #921213;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
}

a:hover {
  color: #000;
  text-decoration: underline;
}

ul {
  margin-left: 30px;
  margin-bottom: 15px;
}

li {
  margin-bottom: 10px;
  color: #555;
}

.update-date {
  background-color: #f0f0f0;
  padding: 15px;
  border-left: 4px solid #921213;
  margin-bottom: 30px;
  border-radius: 4px;
}

.update-date p {
  margin: 0;
  color: #666;
}

.section {
  margin-bottom: 30px;
}

footer {
  background-color: #000;
  color: #C9C8C9;
  text-align: center;
  padding: 30px 20px;
  margin-top: 50px;
}

footer a {
  color: #C9C8C9;
}

footer a:hover {
  color: white;
}

.back-button {
  display: inline-block;
  margin-bottom: 20px;
  padding: 10px 20px;
  background-color: #921213;
  color: white;
  text-decoration: none;
  border-radius: 5px;
  transition: background-color 0.3s;
}

.back-button:hover {
  background-color: #000;
}

@media (max-width: 768px) {
  .container {
    margin: 70px 10px 0;
    padding: 20px;
  }

  h1 {
    font-size: 28px;
  }

  h2 {
    font-size: 18px;
  }

  nav h1 {
    font-size: 20px;
  }
}