body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #f8f9fb;
  margin: 0;
  padding: 0;
  color: #333;
}
header {
  background: linear-gradient(135deg, #3a3a3a, #1f1f1f);
  color: white;
  text-align: center;
  padding: 20px 20px 40px 20px;
}
header h1 {
  margin: 0;
  font-size: 2.8rem;
}
header p {
  margin: 10px 0 0;
  font-size: 1.1rem;
  opacity: 0.9;
}
.section-title {
  text-align: center;
  margin: 40px 0 20px;
  font-size: 1.8rem;
  color: #444;
}
.gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  padding: 20px;
  max-width: 900px;
  margin: auto;
}

.gallery--four {
  grid-template-columns: repeat(4, 1fr);
  max-width: 1200px;
}

@media (max-width: 900px) {
  .gallery--four {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .gallery {
    grid-template-columns: 1fr;
  }
  .gallery--four {
    grid-template-columns: 1fr;
  }
}
.card {
  background: white;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}
.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 16px rgba(0,0,0,0.15);
}
.card img,
.card video {
  width: 100%;
  display: block;
  border-bottom: 1px solid #eee;
}
.card p {
  margin: 10px;
  font-size: 0.95rem;
  color: #555;
}
footer {
  text-align: center;
  padding: 20px;
  color: black;
  margin-top: 40px;
}

@media (min-width: 901px) {
  .gallery--center-two .card:nth-child(1) { grid-column: 2; }
  .gallery--center-two .card:nth-child(2) { grid-column: 3; }
}