.page-about {
  --about-side: 232px;
  --about-gap: clamp(28px, 5vw, 72px);
  --about-deco-size: clamp(96px, 22vw, 176px);
  background-color: var(--color-bg);
}

.page-about .breadcrumbs {
  padding-top: 28px;
  padding-bottom: 8px;
}

.page-about .about-layout {
  padding: 0 clamp(0px, 4vw, 24px) 96px;
}

.page-about .about-chapters {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 6px 0 22px;
  scrollbar-width: none;
}

.page-about .about-chapters::-webkit-scrollbar {
  display: none;
}

.page-about .about-chapters__title {
  flex: 0 0 auto;
  align-self: center;
  font-weight: 800;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--color-charcoal);
  background: var(--color-flour);
  border-radius: var(--radius-pill);
  padding: 10px 14px;
}

.page-about .about-chapters__link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px 10px 12px;
  border-radius: var(--radius-pill);
  background: transparent;
  border: 1px solid var(--color-cloud);
  color: var(--color-ink);
  text-decoration: none;
  font-size: 14px;
  font-weight: 700;
  transition: background .2s ease, color .2s ease, border-color .2s ease;
}

.page-about .about-chapters__link:hover {
  background: var(--color-cloud);
}

.page-about .about-chapters__link.is-active,
.page-about .about-chapters__link[aria-current="location"] {
  background: var(--color-gold);
  border-color: var(--color-gold);
  color: #fff;
}

.page-about .about-chapters__num {
  font-family: var(--font-mono);
  font-size: 12px;
  opacity: .7;
}

.page-about .about-chapter {
  position: relative;
  padding: clamp(56px, 10vw, 120px) 0 clamp(48px, 8vw, 96px);
  border-bottom: 1px solid var(--color-cloud);
  overflow: hidden;
}

.page-about .about-chapter:last-child {
  border-bottom: 0;
}

.page-about .about-chapter__deco {
  position: absolute;
  top: -0.15em;
  right: -0.05em;
  font-family: var(--font-mono);
  font-size: var(--about-deco-size);
  font-weight: 800;
  line-height: .8;
  color: var(--color-ink);
  opacity: .045;
  pointer-events: none;
  letter-spacing: -0.04em;
  user-select: none;
}

.page-about .about-chapter__inner {
  position: relative;
  z-index: 1;
}

.page-about .about-chapter .tag {
  background: var(--color-brand);
  color: #fff;
  border-radius: var(--radius-pill);
  padding: 6px 14px;
  display: inline-block;
  margin-bottom: 16px;
  font-size: 12px;
  letter-spacing: .04em;
}

.page-about h1 {
  font-weight: 900;
  font-size: clamp(34px, 5.2vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--color-ink);
  margin: 0 0 10px;
}

.page-about h2 {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(28px, 4.2vw, 44px);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--color-ink);
  margin: 0 0 14px;
}

.page-about p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-charcoal);
  margin-top: 0;
}

.page-about .about-lead {
  font-family: var(--font-mono);
  font-size: clamp(16px, 2vw, 20px);
  color: var(--color-gold);
  letter-spacing: .02em;
  margin-bottom: 28px;
}

.page-about .about-chapter__lead {
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--color-charcoal);
  max-width: 620px;
  margin-bottom: clamp(28px, 5vw, 48px);
}

.page-about .about-cover-grid {
  margin-top: 24px;
}

.page-about .about-cover__text p {
  margin-bottom: 18px;
}

.page-about .about-cover__figure {
  margin: 24px 0 0;
}

.page-about .about-cover__figure img,
.page-about .about-stats__figure img,
.page-about .about-timeline__figure img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-panel);
}

.page-about .about-cover__figure figcaption,
.page-about .about-stats__figure figcaption {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-charcoal);
  margin-top: 8px;
}

.page-about .about-chapter--cover::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: min(44vw, 420px);
  height: 18px;
  background: linear-gradient(110deg, var(--color-gold) 0%, var(--color-barley) 70%, transparent 100%);
  border-radius: 0 0 18px 0;
  z-index: 2;
}

.page-about .about-flow {
  display: grid;
  gap: 18px;
  margin-bottom: 28px;
}

.page-about .about-flow__item {
  background: var(--color-flour);
  border-radius: var(--radius-lg);
  padding: 28px;
  border-left: 4px solid var(--color-gold);
  box-shadow: 0 14px 34px rgba(19, 26, 41, .06);
  transition: transform .25s ease;
}

.page-about .about-flow__item:hover {
  transform: translateY(-4px);
}

.page-about .about-flow__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  color: var(--color-gold);
  margin-bottom: 14px;
}

.page-about .about-flow__item h3 {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--color-ink);
}

.page-about .about-flow__item p {
  font-size: 15px;
  line-height: 1.75;
  margin: 0;
}

.page-about .about-stats__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin: 28px 0;
}

.page-about .about-stat {
  background: var(--color-ink);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 22px 18px;
  min-height: 120px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.page-about .about-stat:nth-child(2) {
  background: var(--color-brand);
}

.page-about .about-stat:nth-child(3) {
  background: var(--color-charcoal);
}

.page-about .about-stat:nth-child(4) {
  background: var(--color-green);
}

.page-about .about-stat__num {
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 700;
  line-height: 1;
  color: var(--color-gold);
}

.page-about .about-stat__label {
  margin-top: 12px;
  font-size: 13px;
  color: rgba(255, 255, 255, .82);
  letter-spacing: .02em;
}

.page-about .about-stats__figure {
  margin: 28px 0 28px;
}

.page-about .about-timeline {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(250px, 320px);
  gap: 18px;
  overflow-x: auto;
  padding: 8px 6px 22px;
  scroll-snap-type: x proximity;
  margin: 28px 0 32px;
  scrollbar-width: thin;
  scrollbar-color: var(--color-gold) var(--color-cloud);
}

.page-about .about-timeline::-webkit-scrollbar {
  height: 8px;
}

.page-about .about-timeline::-webkit-scrollbar-track {
  background: var(--color-cloud);
  border-radius: 999px;
}

.page-about .about-timeline::-webkit-scrollbar-thumb {
  background: var(--color-gold);
  border-radius: 999px;
}

.page-about .about-timeline__item {
  background: var(--color-flour);
  border-radius: var(--radius-lg);
  padding: 26px 24px;
  scroll-snap-align: start;
  border-top: 4px solid var(--color-gold);
  clip-path: polygon(0 0, 96% 0, 100% 24px, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
  transition: transform .25s ease, box-shadow .25s ease;
}

.page-about .about-timeline__item:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 36px rgba(19, 26, 41, .12);
}

.page-about .about-timeline__item--v10 {
  border-top-color: var(--color-charcoal);
}

.page-about .about-timeline__item--v22 {
  border-top-color: var(--color-brand);
}

.page-about .about-timeline__item--v30 {
  border-top-color: var(--color-gold);
}

.page-about .about-timeline__item--v38 {
  border-top-color: var(--color-green);
}

.page-about .about-timeline__item h3 {
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--color-ink);
}

.page-about .about-timeline__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
}

.page-about .about-timeline__figure {
  margin: 0 0 24px;
}

.page-about .about-roles {
  display: grid;
  gap: 18px;
  margin: 24px 0 32px;
}

.page-about .about-role {
  background: #fff;
  border: 1px solid var(--color-cloud);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: 0 10px 30px rgba(19, 26, 41, .05);
  transition: box-shadow .25s ease;
}

.page-about .about-role:hover {
  box-shadow: 0 18px 44px rgba(19, 26, 41, .1);
}

.page-about .about-role__num {
  display: block;
  font-size: 24px;
  font-weight: 700;
  color: var(--color-brand);
  margin-bottom: 14px;
}

.page-about .about-role h3 {
  font-size: 19px;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--color-ink);
}

.page-about .about-role p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
}

.page-about .about-role p a {
  color: var(--color-brand);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.page-about .about-principles {
  background: var(--color-brand);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 28px 30px;
  margin-top: 24px;
}

.page-about .about-principles h3 {
  color: var(--color-gold);
  font-size: 18px;
  font-weight: 800;
  margin: 0 0 16px;
}

.page-about .about-principles__list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: principle;
}

.page-about .about-principles__list li {
  counter-increment: principle;
  position: relative;
  padding: 10px 0 10px 42px;
  color: rgba(255, 255, 255, .9);
  line-height: 1.7;
  font-size: 15px;
  border-bottom: 1px solid rgba(255, 255, 255, .12);
}

.page-about .about-principles__list li:last-child {
  border-bottom: 0;
}

.page-about .about-principles__list li::before {
  content: counter(principle);
  position: absolute;
  left: 0;
  top: 10px;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--color-gold);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-about .about-source-flow {
  display: grid;
  gap: 16px;
  margin: 28px 0 32px;
}

.page-about .about-source-flow__step {
  background: var(--color-ink);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 26px 22px;
  position: relative;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
  transition: transform .25s ease;
}

.page-about .about-source-flow__step:hover {
  transform: translateX(4px);
}

.page-about .about-source-flow__num {
  display: block;
  font-size: 22px;
  color: var(--color-gold);
  margin-bottom: 12px;
}

.page-about .about-source-flow__step h3 {
  font-size: 17px;
  font-weight: 800;
  margin: 0 0 8px;
  color: #fff;
}

.page-about .about-source-flow__step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, .78);
}

.page-about .about-chapter__footnote {
  margin-top: 24px;
  font-size: 15px;
  color: var(--color-charcoal);
  background: var(--color-cloud);
  border-radius: var(--radius-md);
  padding: 16px 20px;
}

.page-about .about-chapter__footnote a,
.page-about .about-chapter__inner p a {
  color: var(--color-brand);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 2px;
}

@media (min-width: 760px) {
  .page-about .about-stats__grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }
}

@media (min-width: 860px) {
  .page-about .about-cover-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(220px, 0.85fr);
    gap: 48px;
    align-items: center;
  }

  .page-about .about-cover__figure {
    margin: 0;
  }

  .page-about .about-cover__figure img {
    width: 100%;
    height: auto;
    aspect-ratio: 3 / 4;
    object-fit: cover;
  }

  .page-about .about-flow {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .page-about .about-roles {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .page-about .about-source-flow {
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-layout {
    display: grid;
    grid-template-columns: var(--about-side) minmax(0, 1fr);
    gap: var(--about-gap);
    align-items: start;
    padding-bottom: 120px;
  }

  .page-about .about-chapters {
    display: flex;
    flex-direction: column;
    gap: 4px;
    align-items: stretch;
    padding: 24px 0;
    position: sticky;
    top: 96px;
    overflow: visible;
    scrollbar-width: none;
  }

  .page-about .about-chapters__title {
    background: transparent;
    color: var(--color-charcoal);
    padding: 8px 14px;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: .14em;
    margin-bottom: 10px;
  }

  .page-about .about-chapters__link {
    padding: 12px 14px 12px 18px;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    background: transparent;
    font-size: 14px;
  }

  .page-about .about-chapters__link:hover {
    background: var(--color-cloud);
  }

  .page-about .about-chapters__link.is-active,
  .page-about .about-chapters__link[aria-current="location"] {
    background: var(--color-brand);
    color: #fff;
    border-color: var(--color-brand);
  }

  .page-about .about-chapters__link.is-active .about-chapters__num,
  .page-about .about-chapters__link[aria-current="location"] .about-chapters__num {
    opacity: 1;
    color: var(--color-gold);
  }
}
<<< >>>