body {
  font-family: 'Inter', sans-serif;
  font-size: 1.05em;
  line-height: 1.75;
  color: #333;
  background-color: #fdfdfd;
}

.header {
  background-color: #222;
  color: white;
  text-align: center;
  padding: 2em;
}

.header h1 {
  font-size: 3em;
  margin: 0;
}
.header h2 {
  font-size: 2.5em;
  margin: 0;
}
.header h3 {
  margin-top: 0.3em;
  font-weight: 300;
}

.links a {
  color: #66ccff;
  margin: 0 1em;
  text-decoration: none;
}
.links a:hover {
  text-decoration: underline;
}

.teaser img {
  max-width: 900px;
  display: block;
  margin: 2em auto;
}

.content {
  max-width: 900px;
  margin: auto;
  padding: 2em;
  line-height: 1.6;
}

ul {
  padding-left: 2em;
}

pre {
  background-color: #f4f4f4;
  padding: 1em;
  overflow-x: auto;
  border-radius: 6px;
}

footer {
  text-align: center;
  font-size: 0.9em;
  color: #888;
  margin: 3em 0 1em;
}
.video-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5em;
  margin-top: 0.5em;
}

.item {
  text-align: center;
}

.caption {
  margin-top: 0.5em;
  padding: 0.4em;
  border-radius: 8px;
  font-weight: bold;
}

.caption.success {
  background-color: #fef2e0;
  color: green;
}

.caption.fail {
  background-color: #fdeaea;
  color: red;
}
h1, h2 {
  font-family: 'DM Serif Display', serif;
  letter-spacing: -0.01em;
}

h2 {
  border-bottom: 2px solid #eee;
  padding-bottom: 0.4em;
  margin-top: 2.5em;
  font-size: 1.8em;
  color: #2c3e50;
}