body {
  margin: 0;
  font-family: Arial, sans-serif;
  line-height: 1.7;
  scroll-behavior: smooth;
  color: #12151a;
}

header {
  background: #1e1e1e;
  color: #fff;
  padding: 4rem 1rem;
  text-align: center;
}

nav {
  position: sticky;
  top: 0;
  background: #ffffff;
  border-bottom: 1px solid #ddd;
  padding: 0.75rem;
  text-align: center;
  z-index: 1000;
}

nav a {
  margin: 0 0.8rem;
  text-decoration: none;
  color: #1e1e1e;
  font-weight: bold;
}

nav a:hover {
  color: #c20813;
}

section {
  max-width: 900px;
  margin: auto;
  padding: 4rem 1rem;
}

section img {
  max-width: 100%;
  border-radius: 6px;
  margin: 1.5rem 0;
}

main section {
  background: #f5f5f5;
  padding: 2rem;

}

footer {
  background: #1e1e1e;
  color: #fff;
  text-align: center;
  padding: 1rem;
}
footer a {
  color: #fff;
  text-decoration: none;
  margin: 0 0.5rem;
}

footer a:hover {
  color: #fff
  text-decoration: underline;
}
a.download-link {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: #c20813;
  color: white;
  text-decoration: none;
  border-radius: 4px;
  margin-top: 1rem;
}

a.download-link:hover {
  background: #650004;
}