body {
  font-family: 'Segoe UI', sans-serif;
  margin: 0;
  background: #f0f2f5;
  color: #333;
}
header {
  background: #000030;
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
header img {
  height: 50px;
}
nav a {
  color: white;
  margin: 0 15px;
  text-decoration: none;
  font-weight: bold;
}
h1, h2 {
  color: #002060;
}
main {
  padding: 30px 20px;
}
.event-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 25px;
}
.event-card {
  background: white;
  border-radius: 12px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  overflow: hidden;
  padding: 15px;
}
.event-card h3 {
  margin: 10px 0;
}
.event-card button {
  padding: 10px 15px;
  border: none;
  background: #0044cc;
  color: white;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
}
.event-card button:hover {
  background: #002fa1;
}
.video-thumb, .video-container {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
}
.video-thumb iframe,
.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
footer {
  text-align: center;
  padding: 20px;
  background: #ddd;
  font-size: 14px;
}