@layer blocks {
  /* An empty box drawn in ink, ticked in Caveat. The box never fills: the
     tick is a handwritten glyph in decorative red, the same mark as the
     live roadmap box. */
  .checkbox {
    appearance: none;
    -webkit-appearance: none;
    position: relative;
    background: transparent;
    padding: 0;
    border: var(--border-width) solid var(--color-text);
    border-radius: var(--radius-s);
    line-height: var(--leading);
    font-size: var(--font-base);
  }

  .checkbox:focus-visible {
    outline: 2.5px solid var(--color-focus);
    outline-offset: 2px;
  }

  .checkbox:checked::after {
    content: "✓";
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-hand);
    font-weight: var(--weight-bold);
    font-size: 1.2rem;
    line-height: 1;
    color: var(--color-decorative);
  }
}