body {
  background-color: #000;
  color: #ddd;
  font-family: Verdana, sans-serif;
  margin: 0;
  padding: 0;
}

main {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 100vh;
  gap: 2rem;
}

.title {
  width: 70vw;
  max-width: 800px;
  margin-bottom: 1rem;
}

.contents {
  width: 60vw;
  max-width: 600px;
  font-size: 1rem;
  color: rgba(200, 200, 200, 0.8);
  text-align: left;
  background-color: rgba(255, 255, 255, 0.05);
  padding: 1.5rem;
  transition: background-color 0.3s ease, transform 0.3s ease;
}

.contents a {
  color: #fff;
  transition: color 0.3s ease;
}

.contents a:hover {
  color: rgb(255, 0, 0);
}

.sponsor img {
  width: 20vw;
  min-width: 200px;
  opacity: 0.4;
  transition: opacity 0.3s ease, transform 0.3s ease;
  filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.1));
}

.sponsor img:hover {
  opacity: 1;
  transform: scale(1.05);
}