* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  height: 100vh;
  overflow: hidden;
}

body {
  background-color: #ffffff;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

#container {
  overflow: scroll;
  height: 100vh;
  background-color: #ffffff;
}

#container::-webkit-scrollbar {
  display: none;
}

#container {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.page {
  height: 100vh;
  position: relative;
  background-color: #ffffff;
}

.page:nth-child(even) {
  background-color: #f8f8f8;
}

#home {
  display: flex;
  justify-content: center;
  align-items: center;
}

.centered-image {
  position: absolute;
  top: 30%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 30%;
}

.scroll-indicator {
  position: absolute;
  bottom: 60px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 2rem;
  color: #555;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-10px);
  }
  60% {
    transform: translateY(-5px);
  }
}

.content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  max-width: 600px;
  width: 90%;
  padding: 20px;
}

.content h1 {
  font-size: 2.5rem;
  font-weight: 600;
  color: #333;
  margin-bottom: 10px;
}

.content .url {
  font-family: 'Courier New', monospace;
  font-size: 1rem;
  color: #666;
  margin-bottom: 30px;
}

.content p {
  font-size: 1.1rem;
  line-height: 1.6;
  color: #555;
  margin-bottom: 30px;
}

.content a {
  display: inline-block;
  padding: 12px 24px;
  background-color: #333;
  color: #ffffff;
  text-decoration: none;
  font-size: 1.2rem;
}

.content a:hover {
  background-color: #555;
}

.content a.disabled {
  background-color: #ccc;
  color: #666;
  pointer-events: none;
  cursor: not-allowed;
}

#navigation {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  background-color: #ffffff;
  border-top: 1px solid #e0e0e0;
  z-index: 100;
}

#navigation button {
  flex: 1;
  padding: 12px;
  background-color: #ffffff;
  border: none;
  border-right: 1px solid #e0e0e0;
  font-size: 0.9rem;
  color: #333;
  cursor: pointer;
}

#navigation button:last-child {
  border-right: none;
}

#navigation button:hover {
  background-color: #f5f5f5;
}

#navigation button.active {
  background-color: #333;
  color: #ffffff;
}

@media (max-width: 768px) {
  .content h1 {
    font-size: 1.8rem;
  }

  #navigation button {
    font-size: 0.8rem;
    padding: 10px 5px;
  }
}

@media (orientation: portrait) {
  .centered-image {
    width: 90%;
  }
}