:root {
  --ink: #050706;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  overflow-x: hidden;
  background: var(--ink);
}

body {
  font-family: var(--sans);
}

main {
  width: 100%;
}

.section {
  display: grid;
  width: 100%;
  min-height: 0;
  aspect-ratio: 16 / 9;
  place-items: center;
  overflow: hidden;
  background: var(--ink);
}

.section img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
}