/* Mobile series chapters: give existing copy a restrained scientific-editorial structure. */
@media (min-width: 761px) {
  .home-page .home-series-editorial--brief .home-series-chapter__subtitle > span + span {
    margin-left: 1em;
  }
}

@media (max-width: 760px) {
  .home-page .home-series-editorial--brief .home-series-chapters {
    counter-reset: home-series-chapter;
  }

  .home-page .home-series-editorial--brief .home-series-chapter--brief {
    counter-increment: home-series-chapter;
  }

  .home-page .home-series-editorial--brief .home-series-chapter--brief .home-series-chapter__primary {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    align-content: start;
    padding: 34px 20px 42px;
  }

  .home-page .home-series-editorial--brief .home-series-chapter__primary .eyebrow {
    display: grid;
    grid-template-columns: auto minmax(28px, 1fr) auto;
    gap: 12px;
    align-items: center;
    margin: 0 0 42px;
    color: var(--muted);
    font-size: 10px;
    letter-spacing: 0.12em;
    line-height: 1.4;
  }

  .home-page .home-series-editorial--brief .home-series-chapter__primary .eyebrow::before {
    color: var(--ink);
    content: counter(home-series-chapter, decimal-leading-zero);
    font-family: var(--sans);
    font-size: 11px;
    letter-spacing: 0.08em;
  }

  .home-page .home-series-editorial--brief .home-series-chapter__primary .eyebrow::after {
    grid-column: 2;
    grid-row: 1;
    border-top: 1px solid var(--line-strong);
    content: "";
  }

  .home-page .home-series-editorial--brief .home-series-chapter__primary h3 {
    max-width: none;
    margin: 0;
    font-size: clamp(46px, 13.6vw, 58px);
    letter-spacing: 0.03em;
    line-height: 1;
  }

  .home-page .home-series-editorial--brief .home-series-chapter__tagline {
    position: relative;
    margin: 22px 0 0;
    padding-left: calc(33.333% + 14px);
    font-size: 17px;
    letter-spacing: 0.14em;
    line-height: 1.45;
  }

  .home-page .home-series-editorial--brief .home-series-chapter__tagline::before {
    position: absolute;
    top: 0.72em;
    left: 0;
    width: calc(33.333% - 10px);
    border-top: 1px solid var(--line-strong);
    content: "";
  }

  .home-page .home-series-editorial--brief .home-series-chapter__primary > p.home-series-chapter__intro {
    max-width: none;
    margin: 30px 0 0 25%;
    padding-left: 16px;
    border-left: 1px solid var(--line);
    color: var(--muted);
    font-size: 12px;
    line-height: 1.9;
  }

  .home-page .home-series-editorial--brief .home-series-chapter--brief .home-series-chapter__secondary {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    width: 100%;
    max-width: none;
    align-content: start;
    justify-self: stretch;
    padding: 0 0 28px;
  }

  .home-page .home-series-editorial--brief .home-series-chapter__secondary h4 {
    display: grid;
    gap: 8px;
    width: 100%;
    max-width: none;
    margin: 0;
    padding: 38px 20px 30px;
    border-bottom: 1px solid var(--line-strong);
    line-height: 1.08;
  }

  .home-page .home-series-editorial--brief .home-series-chapter__series-category,
  .home-page .home-series-editorial--brief .home-series-chapter__series-product {
    display: block;
    margin: 0;
  }

  .home-page .home-series-editorial--brief .home-series-chapter__series-category {
    color: var(--muted);
    font-family: var(--sans);
    font-size: 10px;
    letter-spacing: 0.12em;
    line-height: 1.5;
  }

  .home-page .home-series-editorial--brief .home-series-chapter__series-product {
    color: var(--ink);
    font-family: var(--serif);
    font-size: clamp(32px, 9.2vw, 40px);
    letter-spacing: 0.02em;
    line-height: 1.12;
  }

  .home-page .home-series-editorial--brief .home-series-chapter__subtitle {
    display: flex;
    width: 100%;
    max-width: none;
    align-items: center;
    margin: 0;
    padding: 18px 20px;
    border-bottom: 1px solid var(--line-strong);
    font-size: 11px;
    letter-spacing: 0.1em;
    line-height: 1.4;
  }

  .home-page .home-series-editorial--brief .home-series-chapter__subtitle > span {
    display: inline-flex;
    align-items: center;
    white-space: nowrap;
  }

  .home-page .home-series-editorial--brief .home-series-chapter__subtitle > span + span::before {
    position: static;
    margin: 0 clamp(14px, 5vw, 24px);
    color: var(--faint);
    content: "·";
    font-family: var(--serif);
    font-size: 13px;
    letter-spacing: 0;
  }

  .home-page .home-series-editorial--brief .home-series-chapter__summary {
    max-width: none;
    margin: 0;
    padding: 22px 20px;
    border-bottom: 1px solid var(--line);
    color: var(--muted);
    font-size: 12px;
    line-height: 1.8;
  }

  .home-page .home-series-editorial--brief .home-series-chapter__cta {
    grid-template-columns: auto minmax(72px, 1fr);
    width: calc(100% - 40px);
    min-height: 44px;
    margin: 0 20px;
    padding: 22px 0 0;
    font-size: 11px;
    letter-spacing: 0.08em;
  }
}