main.learn {
  figure[data-chart="series"] {
    figcaption {
      text-transform: uppercase;

      header {
        display: flex;
        align-items: start;
        justify-content: space-between;
        gap: 1rem;
      }

      h5 {
        margin: 0;
        font-family: var(--font-mono);
        font-size: inherit;
        font-weight: inherit;
        line-height: inherit;
      }

      time {
        color: var(--gray);
      }

      span:is([data-chart="unit"], [data-chart="separator"]) {
        color: var(--gray);
      }

      menu {
        --shadow-size: 1rem;

        display: flex;
        margin-inline: calc(-1 * var(--shadow-size));
        padding: 0 var(--shadow-size);
        padding-bottom: 1rem;
        padding-top: 0.25rem;
        overflow-x: auto;
        list-style: none;
        mask-image: linear-gradient(
          to right,
          transparent,
          black var(--shadow-size),
          black calc(100% - var(--shadow-size)),
          transparent
        );
      }

      li {
        flex: 0 0 auto;
      }

      button {
        padding: 0.25rem 0.375rem;
        border: 0;
        border-radius: 0.25rem;
        color: inherit;
        background: none;
        font: inherit;
        text-align: inherit;
        text-transform: inherit;
        cursor: pointer;

        &:is(:hover, :focus-visible, [data-active], [data-preview]) {
          color: var(--black);
          background: var(--color);

          span,
          output {
            color: inherit;
          }
        }

        &:focus-visible {
          outline: 1px solid var(--orange);
          outline-offset: 0.125rem;
        }

        &[data-muted] {
          opacity: 0.35;
        }

        > span {
          display: block;
          color: var(--color);
          text-align: left;

          &::before {
            content: "";
            display: inline-block;
            width: 0.5em;
            height: 0.5em;
            margin-right: 0.35em;
            margin-bottom: 0.1rem;
            border-radius: 50%;
            background: currentColor;
          }
        }

        > output {
          display: block;
          margin-top: 0.25rem;
          margin-left: auto;
          width: 7ch;
          min-height: 1em;
          color: var(--white);
          font-variant-numeric: tabular-nums;
          text-align: right;
        }
      }
    }

    &:fullscreen {
      figcaption {
        h5 {
          color: var(--white);
          font-family: var(--font-serif);
          font-size: 2rem;
          text-transform: none;
        }

        menu {
          padding-bottom: 0.5rem;
        }
      }
    }

    svg [data-series][data-muted] {
      opacity: 0.2;
    }
  }
}