body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI",
               Helvetica, Arial, sans-serif;
  background: #ffffff;
  color: #111;
  margin: 0;
}

.container {
  max-width: 980px;
  margin: auto;
  padding: 40px 20px;
}

.title {
  text-align: center;
  font-size: 48px;
  margin-bottom: 10px;
}

.subtitle {
  text-align: center;
  font-size: 20px;
  color: #555;
  margin-bottom: 30px;
}

.button-row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin: 30px 0 40px;
}

.button-row-dark {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin: 24px 0 36px;
}

.pill-dark {
  display: inline-flex;
  align-items: center;
  gap: 8px;

  padding: 10px 18px;
  border-radius: 999px;

  background-color: #2f2f2f;
  color: #ffffff;

  text-decoration: none;
  font-weight: 600;
  font-size: 15px;

  transition: background-color 0.2s ease, transform 0.15s ease;
}

.pill-dark:hover {
  background-color: #444;
  transform: translateY(-1px);
}

.pill-dark .icon {
  font-size: 16px;
  line-height: 1;
}

.buttons {
  text-align: center;
  margin-bottom: 40px;
}

.btn {
  display: inline-block;
  padding: 10px 16px;
  margin: 5px;
  border: 1px solid #ccc;
  border-radius: 6px;
  text-decoration: none;
  color: #111;
  font-weight: 500;
}

.btn:hover {
  background: #f5f5f5;
}

section {
  margin-top: 60px;
}

h3 {
  font-size: 22px;
  margin-top: 40px;
  margin-bottom: 10px;
}

h2 {
  font-size: 28px;
  margin-bottom: 15px;
}

.abstract {
  font-size: 17px;
  line-height: 1.6;
}

.media-section {
  text-align: center;
}

.media-section video {
  width: 100%;
  max-width: 800px;
  border-radius: 8px;
}

.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.media-grid video {
  width: 100%;
  border-radius: 8px;
}

.figure {
  width: 100%;
  max-width: 800px;
  display: block;
  margin: 20px auto;
}

.image-grid-3 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.image-grid-3 img {
  width: 100%;
  border-radius: 8px;
}


.caption {
  font-size: 14px;
  color: #555;
  text-align: center;
  margin-top: 8px;
}

ul {
  font-size: 16px;
  line-height: 1.6;
}

footer {
  text-align: center;
  margin-top: 80px;
  color: #777;
  font-size: 14px;
}