:root {
    --papel: #f7faf8;
    --verde: #1b4d3e;
    --neon: #22e704;
    --tinta: #16221e;
  }
  * { box-sizing: border-box; }
  body {
    margin: 0;
    min-height: 100vh;
    display: grid;
    place-items: center;
    background: var(--papel);
    color: var(--tinta);
  }
  main {
    width: min(280px, calc(100vw - 64px));
    display: grid;
  }
  svg { width: 100%; height: auto; overflow: visible; display: block; }