.c-video {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: 12px;
  background: #0a0a0c;
}

.c-video--rounded { border-radius: 20px; }

.c-video iframe,
.c-video video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
  object-fit: contain;
}