:root {
  --pf-latest-black: #000;
  --pf-latest-panel: #262626;
  --pf-latest-panel-line: #3b3b3b;
  --pf-latest-white: #f4f4f2;
  --pf-latest-muted: rgba(244, 244, 242, .58);
  --pf-latest-cyan: #39d8ee;
}

.product-form-story {
  background: var(--pf-latest-black);
}

.product-form-story::before {
  background: linear-gradient(
    90deg,
    transparent calc(var(--pf-space-page) - 1px),
    rgba(255, 255, 255, .12) var(--pf-space-page),
    transparent calc(var(--pf-space-page) + 1px)
  );
}

.pf-header__copy h2 {
  max-width: 760px;
  font-size: clamp(32px, 3.45vw, 56px);
  line-height: 1.1;
}

.pf-header__copy > div {
  color: var(--pf-latest-muted);
}

/* 22 / YES + NO: latest PPT uses two independent charcoal fields. */
.product-form-story--01 .pf-content {
  margin-top: clamp(44px, 6vh, 72px);
}

.pf-criteria {
  gap: clamp(34px, 6vw, 92px);
  overflow: visible;
  background: transparent;
}

.pf-criteria__side,
.pf-criteria__side--no {
  padding: 0 0 20px;
  background: var(--pf-latest-panel);
  color: var(--pf-latest-white);
}

.pf-criteria__side header {
  margin: 0;
  padding: 18px 22px 14px;
}

.pf-criteria__side header span {
  color: var(--pf-latest-white);
  font-size: clamp(34px, 3.3vw, 54px);
}

.pf-criteria__side header p {
  color: var(--pf-latest-muted);
}

.pf-criteria__images {
  height: clamp(360px, 35vw, 560px);
  gap: 2px;
  background: var(--pf-latest-black);
}

.pf-criteria__side--no .pf-criteria__images {
  grid-template-columns: repeat(2, 1fr);
  grid-template-rows: 1fr .84fr;
}

.pf-criteria__side--no .pf-criteria__images figure:nth-child(3) {
  grid-column: 1 / -1;
}

.pf-criteria__side--no .pf-criteria__images figure:nth-child(3) img {
  object-position: center 56%;
}

.pf-criteria__images figure {
  background: #ededeb;
}

.pf-criteria__images img {
  filter: grayscale(1);
}

.pf-rule-list {
  margin: 0;
  padding: 17px 22px 0;
  border-top: 2px solid var(--pf-latest-black);
}

.pf-rule-list li::before {
  color: rgba(244, 244, 242, .4);
}

.pf-rule-list b {
  color: var(--pf-latest-white);
}

.pf-rule-list span {
  color: var(--pf-latest-muted);
}

/* 23 / Three silhouettes remain centered; only the future direction is bright. */
.product-form-story--02 .pf-content {
  margin-top: clamp(40px, 5vh, 64px);
}

.pf-evolution {
  width: min(100%, 1060px);
  gap: clamp(46px, 7vw, 112px);
  padding-top: 0;
}

.pf-evolution__line {
  display: none;
}

.pf-evolution__figure {
  height: clamp(390px, 42vw, 610px);
}

.pf-evolution__figure img {
  height: 82%;
  filter: invert(1);
}

.pf-evolution article:nth-of-type(1) .pf-evolution__figure img {
  opacity: .28;
}

.pf-evolution article:nth-of-type(2) .pf-evolution__figure img {
  opacity: .4;
}

.pf-evolution article:nth-of-type(3) .pf-evolution__figure img {
  opacity: .96;
}

.pf-evolution__copy {
  min-height: 132px;
  border-top-color: var(--pf-latest-panel-line);
}

.pf-evolution__copy h3 {
  font-size: clamp(17px, 1.35vw, 22px);
}

.pf-asset-note {
  width: min(100%, 1060px);
  border-top-color: var(--pf-latest-panel-line);
}

/* 24 / Latest PPT returns the diagram to a black technical field. */
.product-form-story--03 .pf-content {
  margin-top: clamp(42px, 6vh, 76px);
}

.pf-spec {
  grid-template-columns: minmax(300px, .72fr) minmax(0, 1.28fr);
  min-height: min(700px, 68vw);
  background: transparent;
  color: var(--pf-latest-white);
}

.pf-spec__diagram {
  order: 2;
  padding: 0 clamp(20px, 4vw, 64px);
}

.pf-spec__diagram::after {
  display: none;
}

.pf-spec__diagram img {
  height: min(60vw, 700px);
  max-width: 90%;
  filter: invert(1);
}

.pf-spec__rules {
  order: 1;
  justify-content: end;
  padding: clamp(20px, 4vw, 58px) clamp(16px, 4vw, 54px) clamp(36px, 8vw, 108px) 0;
  border: 0;
}

.pf-status {
  margin-bottom: 22px;
  border-color: rgba(57, 216, 238, .62);
  color: var(--pf-latest-cyan);
}

.pf-spec__rules div {
  border-top-color: var(--pf-latest-panel-line);
}

.pf-spec__rules b {
  color: rgba(244, 244, 242, .38);
}

.pf-spec__rules h3 {
  color: var(--pf-latest-white);
}

.pf-spec__rules p {
  color: var(--pf-latest-muted);
}

.pf-spec__rules em {
  color: var(--pf-latest-cyan);
  font-style: normal;
  font-weight: 600;
  letter-spacing: .02em;
}

@media (max-width: 980px) {
  .pf-criteria {
    gap: 28px;
  }

  .pf-spec {
    grid-template-columns: 1fr;
  }

  .pf-spec__rules {
    order: 1;
    grid-template-columns: repeat(3, 1fr);
    padding: 0 0 34px;
    border-bottom: 1px solid var(--pf-latest-panel-line);
  }

  .pf-spec__diagram {
    order: 2;
    padding-top: 38px;
  }
}

@media (max-width: 680px) {
  .pf-header__copy h2 {
    font-size: 34px;
  }

  .pf-criteria {
    gap: 22px;
  }

  .pf-criteria__side header {
    padding: 15px 16px 13px;
  }

  .pf-criteria__images {
    height: 72vw;
    min-height: 260px;
  }

  .pf-criteria__side--no .pf-criteria__images {
    height: 94vw;
    min-height: 350px;
  }

  .pf-rule-list {
    padding: 16px;
  }

  .pf-evolution {
    gap: 54px;
  }

  .pf-evolution__figure {
    height: 340px;
  }

  .pf-evolution article:nth-of-type(1) .pf-evolution__figure img {
    opacity: .42;
  }

  .pf-evolution article:nth-of-type(2) .pf-evolution__figure img {
    opacity: .56;
  }

  .pf-spec__rules {
    grid-template-columns: 1fr;
  }

  .pf-spec__diagram img {
    width: min(88vw, 470px);
    height: auto;
    max-width: none;
  }
}