main.learn {
  figure[data-chart="series"] {
    line-height: 1;

    svg {
      display: block;
      width: 100%;
      height: 20rem;
      cursor: crosshair;
      overflow: visible;
      touch-action: pan-y;
    }

    svg:focus-visible {
      outline: 1px solid var(--orange);
      outline-offset: 0.5rem;
    }

    p[role="status"]:empty {
      display: none;
    }

    > footer {
      display: flex;
      flex-wrap: wrap;
      align-items: start;
      justify-content: space-between;
      gap: 0.5rem 1rem;
      margin: 0.5rem 0 0;

      > div {
        display: flex;
        flex-wrap: wrap;
        gap: 0.125rem 0.5rem;
      }

      fieldset {
        display: flex;
        gap: 0.25rem;
        margin: 0;
        padding: 0;
        border: 0;
        text-transform: uppercase;

        legend {
          position: absolute;
          width: 1px;
          height: 1px;
          overflow: hidden;
          clip-path: inset(50%);
          white-space: nowrap;
        }

        label {
          position: relative;
          display: block;
          cursor: pointer;
        }

        input {
          position: absolute;
          inset: 0;
          margin: 0;
          opacity: 0;
          cursor: pointer;
        }

        span {
          display: block;
          padding: 0.25rem;
          border-radius: 0.25rem;
          color: var(--gray);
        }

        label:hover span {
          color: var(--white);
          background: var(--dark-gray);
        }

        label:has(:checked) span {
          color: var(--black);
          background: var(--white);
        }

        label:active span {
          color: var(--black);
          background: var(--orange);
        }

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

      button[data-chart="fullscreen"] {
        padding: 0.25rem;
        border: 0;
        border-radius: 0.25rem;
        color: var(--gray);
        background: none;
        font: inherit;
        line-height: inherit;
        text-transform: uppercase;
        cursor: pointer;

        &:hover {
          color: var(--white);
          background: var(--dark-gray);
        }

        &[aria-pressed="true"] {
          color: var(--black);
          background: var(--green);
        }

        &:active {
          color: var(--black);
          background: var(--orange);
        }

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

    &:fullscreen {
      display: flex;
      flex-direction: column;
      gap: 0.5rem;
      padding: 1rem;
      background: var(--black);

      svg {
        flex: 1;
        height: auto;
        min-height: 0;
      }

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

    figcaption {
      text-transform: uppercase;

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

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

      menu {
        display: flex;
        gap: 0.5rem;
        padding: 0;
        padding-bottom: 1rem;
        overflow-x: auto;
        scrollbar-width: thin;
        list-style: none;
      }

      li {
        flex: 0 0 auto;
      }

      button {
        padding: 0.25rem;
        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]) {
          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;
          min-height: 1em;
          color: var(--white);
          font-variant-numeric: tabular-nums;
          text-align: right;
        }
      }
    }

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

    [data-scrubber] {
      opacity: 0;
      pointer-events: none;
    }

    svg[data-scrubbing="true"] [data-scrubber] {
      opacity: 1;
    }

    [data-scrubber="guide"] {
      stroke: var(--light-gray);
      stroke-dasharray: 2 4;
      vector-effect: non-scaling-stroke;
    }

    [data-scrubber="marker"] {
      fill: var(--black);
      stroke: var(--color, var(--orange));
      stroke-width: 1.5;
      vector-effect: non-scaling-stroke;
    }
  }
}