body {
  margin: 0;
  font-family: 'Courier New', monospace;
  background-color: #0d0d0d;
  color: #e6e6e6;
  text-align: center;
}

header {
  background: #1a1a1a;
  padding: 2rem 1rem;
  border-bottom: 2px solid #ff3333;
}

header h1 {
  font-size: 2.5rem;
  color: #ff3333;
  margin: 0;
  letter-spacing: 0.1em;
}

header p {
  margin-top: 0.5rem;
  font-style: italic;
  color: #ccc;
}

main {
  padding: 3rem 1rem;
  max-width: 800px;
  margin: auto;
}

.banner {
  background: #222;
  border: 1px solid #444;
  padding: 1rem;
  margin-bottom: 2rem;
}

.banner h2 {
  color: #ff4c4c;
  margin-bottom: 0.5rem;
}

.banner p {
  color: #bbb;
}

a {
  color: #66ccff;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

footer {
  padding: 1rem;
  font-size: 0.9rem;
  color: #666;
}

.button {
  display: inline-block;
  margin: 1rem;
  padding: 0.75rem 1.5rem;
  background: #ff3333;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 1px;
  border: none;
  cursor: pointer;
  font-weight: bold;
}

.button:hover {
  background: #cc0000;
}

.qr-box {
  text-align: center;
  margin: 2em 0;
}

.qr-box img {
  border: 1px solid #333;
  padding: 0.5em;
  background: #111;
}

.navbar {
  background-color: #1a1a1a;
  padding: 0.5em 0;
  border-top: 2px solid #ff3333;
}

.navbar ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1.5em;
}

.navbar li {
  display: inline;
}

.navbar a {
  color: #66ccff;
  text-decoration: none;
  font-weight: bold;
  letter-spacing: 0.05em;
}

.navbar a:hover {
  text-decoration: underline;
}