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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f8f9fb;
  color: #333;
  line-height: 1.6;
}

/* Header */
header {
  background-color: #007acc;
  color: white;
  text-align: center;
  padding: 2rem 1rem;
}

header h1 {
  font-size: 2.8rem;
  margin-bottom: 0.5rem;
}

header p {
  font-size: 1.2rem;
}

/* Description Section */
.description {
  max-width: 900px;
  margin: 2rem auto;
  padding: 0 1.5rem;
  font-size: 1.1rem;
  color: #444;
}

.description ul {
  margin-top: 1rem;
  padding-left: 1.5rem;
  list-style-type: disc;
}

/* Video Section */
.video-section {
  max-width: 900px;
  margin: 3rem auto;
  padding: 0 1.5rem;
}

.video-section h2 {
  font-size: 1.6rem;
  color: #007acc;
  margin-bottom: 1rem;
  text-align: center;
}

.video-wrapper {
  width: 100%;
  max-width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  margin-bottom: 2.5rem;
}

.video-wrapper iframe {
  width: 100%;
  height: 100%;
  border: none;
}

.portrait-video-wrapper {
  max-width: 50%;
  width: 50%;
  aspect-ratio: 9 / 16;
  display: flex;
  justify-content: center;
  background: black;
  overflow: hidden;
  margin: 0 auto;
}

.portrait-video-wrapper video {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* Horizontal Divider */
hr {
  border: none;
  height: 2px;
  background-color: #e0e0e0;
  margin: 2rem 0;
}

/* Footer */
footer {
  background-color: #eee;
  padding: 1rem;
  text-align: center;
  font-size: 0.9rem;
  color: #666;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
  header h1 {
    font-size: 2rem;
  }

  .description,
  .video-section {
    padding: 0 1rem;
  }

  .video-section h2 {
    font-size: 1.3rem;
  }
}

@media (max-width: 480px) {
  header h1 {
    font-size: 1.6rem;
  }

  .description {
    font-size: 1rem;
  }

  footer {
    font-size: 0.8rem;
  }
}