body {
  overflow-x: hidden;
  min-height: 100vh;
}

.frame-scroll {
  overflow-x: auto;
  white-space: nowrap;
  background: #f8f9fa;
  padding: 5px 0;
  border-radius: 8px;
}

.frame-thumb {
  position: relative;
  display: inline-block;
  margin-right: 8px;
  border: 2px solid transparent;
  cursor: pointer;
  text-align: center;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
  vertical-align: top;
}

.frame-thumb:hover {
  transform: translateY(-4px);
  box-shadow: 0 6px 14px rgba(0,0,0,0.06);
}

.frame-thumb.active {
  border-color: #0d6efd;
  border-radius: 6px;
  box-shadow: 0 8px 20px rgba(13,110,253,0.12);
}

.frame-thumb canvas {
  width: 100px;
  height: 70px;
  background: white;
  border: 1px solid #ddd;
  display: block;
  margin: 6px auto 3px auto;
  border-radius: 4px;
}

.frame-num {
  font-size: 12px;
  text-align: center;
  color: #333;
  margin-top: 2px;
}