body {
  margin: 0;
  padding: 0;
  background-color: #111;
  font-family: 'Segoe UI', sans-serif;
  overflow-x: hidden;
  overflow-y: auto;
  color: #fdf6e3;
}

#overlay {
  position: fixed;
  inset: 0;
  background: radial-gradient(circle, #222 0%, #000 100%);
  z-index: 999;
  filter: blur(20px);
  animation: explode 1.8s ease-out forwards;
}

@keyframes explode {
  0% {
    transform: scale(0.5);
    opacity: 0.8;
  }
  80% {
    transform: scale(1.1);
    opacity: 0.3;
  }
  100% {
    transform: scale(2);
    opacity: 0;
    display: none;
  }
}

.container {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 2s ease, transform 2s ease;
  max-width: 800px;
  margin: 100px auto;
  padding: 20px;
  background: rgba(40, 40, 40, 0.7);
  backdrop-filter: blur(10px);
  border-radius: 12px;
}

.container.visible {
  opacity: 1;
  transform: translateY(0);
}

header, footer {
  text-align: center;
  margin-bottom: 20px;
}

section {
  margin-bottom: 40px;
}

iframe {
  display: block;
  margin: 20px auto;
  max-width: 100%;
  border-radius: 8px;
}