.page-about {
  --about-soft: rgba(233, 236, 245, .74);
  --about-hair: rgba(166, 174, 203, .22);
  --about-stroke: rgba(233, 236, 245, .13);
  --about-stroke-ink: rgba(16, 21, 40, .12);
  --about-mint-wash: rgba(53, 240, 192, .1);
  background: var(--ki-indigo);
  color: var(--ki-white);
  overflow-x: hidden;
}

.page-about .ki-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: 22px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--ki-muted);
}

.page-about .ki-breadcrumb__item {
  color: var(--ki-muted);
  text-decoration: none;
}

.page-about a.ki-breadcrumb__item:hover {
  color: var(--ki-mint);
}

.page-about .ki-breadcrumb__sep {
  color: rgba(166, 174, 203, .5);
}

.page-about .about-hero {
  padding: 28px 0 44px;
}

.page-about .about-hero__inner {
  display: grid;
  gap: 30px;
}

.page-about .about-hero__eyebrow {
  margin: 0 0 18px;
  height: 88px;
}

.page-about .ki-eyebrow {
  font-family: var(--ki-font-mono);
  font-size: 12px;
  letter-spacing: .3em;
  color: var(--ki-mint);
  text-transform: uppercase;
}

.page-about .about-hero__title {
  margin: 0 0 20px;
  font-family: var(--ki-font-sans);
  font-size: clamp(34px, 8.4vw, 72px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -.02em;
  text-transform: none;
}

.page-about .about-hero__lede {
  max-width: 46ch;
  margin: 0 0 28px;
  color: var(--about-soft);
  font-size: 16px;
  line-height: 1.8;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-hero__media {
  margin: 0;
  border: 2px solid var(--ki-line-strong);
  box-shadow: var(--ki-shadow);
  background: var(--ki-panel);
}

.page-about .about-hero__media img,
.page-about .about-team__media img,
.page-about .about-version__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .ki-media__caption {
  padding: 10px 14px;
  border-top: 1px solid var(--ki-line);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--ki-muted);
}

.page-about .about-strip {
  border-top: 2px solid var(--ki-line-strong);
  border-bottom: 2px solid var(--ki-line-strong);
  background: var(--ki-panel);
}

.page-about .about-strip__inner {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-block: 12px;
}

.page-about .about-strip__lead {
  flex: 0 0 auto;
  padding: 4px 10px;
  border: 2px solid var(--ki-mint);
  font-family: var(--ki-font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--ki-mint);
  clip-path: polygon(var(--ki-cut) 0, 100% 0, 100% calc(100% - var(--ki-cut)), calc(100% - var(--ki-cut)) 100%, 0 100%, 0 var(--ki-cut));
}

.page-about .about-strip__track {
  display: flex;
  align-items: center;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-strip__item {
  flex: 0 0 auto;
  padding: 2px 16px;
  border-right: 1px solid var(--ki-line);
  font-family: var(--ki-font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--about-soft);
  white-space: nowrap;
}

.page-about .about-strip__item--key {
  color: var(--ki-sichuan);
  font-weight: 700;
}

.page-about .about-body__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  padding-block: 36px 56px;
}

.page-about .about-index__title {
  margin: 0 0 10px;
  font-family: var(--ki-font-mono);
  font-size: 11px;
  letter-spacing: .28em;
  color: var(--ki-muted);
}

.page-about .about-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
}

.page-about .about-index__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  border: 2px solid var(--ki-line);
  font-size: 13px;
  color: var(--ki-muted);
  text-decoration: none;
  white-space: nowrap;
  clip-path: polygon(var(--ki-cut) 0, 100% 0, 100% calc(100% - var(--ki-cut)), calc(100% - var(--ki-cut)) 100%, 0 100%, 0 var(--ki-cut));
  transition: color .12s ease-out, border-color .12s ease-out;
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  border-color: var(--ki-mint);
  color: var(--ki-white);
}

.page-about .about-index__no {
  font-family: var(--ki-font-mono);
  font-size: 11px;
  color: var(--ki-mint);
}

.page-about .about-chapter {
  position: relative;
  padding: 40px 0 44px;
  border-top: 1px solid var(--about-hair);
}

.page-about .about-chapter__num {
  position: absolute;
  top: 30px;
  right: 0;
  font-family: var(--ki-font-mono);
  font-size: clamp(64px, 20vw, 148px);
  font-weight: 700;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px var(--about-stroke);
  pointer-events: none;
  user-select: none;
}

.page-about .about-chapter__grid {
  position: relative;
  display: grid;
  gap: 18px;
}

.page-about .about-chapter__meta {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-about .about-chapter__year {
  font-family: var(--ki-font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--ki-mint);
}

.page-about .about-chapter__year::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--ki-mint);
}

.page-about .about-chapter__label {
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--ki-muted);
}

.page-about .about-chapter__title {
  margin: 0 0 16px;
  font-family: var(--ki-font-sans);
  font-size: clamp(24px, 5vw, 40px);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -.01em;
}

.page-about .about-chapter__content p {
  max-width: 62ch;
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--about-soft);
}

.page-about .about-data {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  margin-top: 8px;
  padding: 8px 14px;
  background: var(--about-mint-wash);
  border-left: 3px solid var(--ki-mint);
  font-family: var(--ki-font-mono);
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--ki-mint);
}

.page-about .about-data__key {
  padding: 1px 8px;
  border: 1px solid var(--ki-mint);
  font-size: 11px;
  letter-spacing: .12em;
}

.page-about .about-coord {
  display: grid;
  gap: 24px;
  margin: 28px 0 24px;
}

.page-about .about-radar {
  margin: 0;
  border: 2px solid var(--ki-line);
  background: rgba(21, 28, 69, .6);
  padding: 18px;
}

.page-about .about-radar svg {
  display: block;
  width: 100%;
  max-width: 320px;
  height: auto;
  margin: 0 auto;
}

.page-about .about-radar__cap {
  margin-top: 12px;
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: .04em;
  color: var(--ki-muted);
  text-align: center;
}

.page-about .about-coord__filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.page-about .about-coord__btn {
  padding: 7px 14px;
  border: 2px solid var(--ki-line-strong);
  background: transparent;
  font-family: var(--ki-font-sans);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--about-soft);
  cursor: pointer;
  clip-path: polygon(var(--ki-cut) 0, 100% 0, 100% calc(100% - var(--ki-cut)), calc(100% - var(--ki-cut)) 100%, 0 100%, 0 var(--ki-cut));
  transition: color .12s ease-out, border-color .12s ease-out, background-color .12s ease-out;
}

.page-about .about-coord__btn:hover,
.page-about .about-coord__btn:focus-visible {
  border-color: var(--ki-violet);
  color: var(--ki-white);
  background: rgba(123, 92, 255, .18);
}

.page-about .about-layers {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-layers__item {
  padding: 14px 16px;
  border: 2px solid var(--ki-line);
  background: rgba(21, 28, 69, .55);
  transition: transform .12s ease-out, border-color .12s ease-out, box-shadow .12s ease-out;
}

.page-about .about-layers__item:hover {
  transform: translate(-2px, -2px);
  border-color: var(--ki-mint);
  box-shadow: var(--ki-shadow-mint);
}

.page-about .about-layers__title {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--ki-white);
}

.page-about .about-layers__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--about-soft);
}

.page-about .about-scale {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 26px;
}

.page-about .about-scale__item {
  padding: 16px 14px;
  border: 2px solid var(--ki-line);
  border-top-color: var(--ki-mint);
  background: rgba(21, 28, 69, .5);
}

.page-about .about-scale__value {
  display: block;
  margin-bottom: 6px;
  font-family: var(--ki-font-mono);
  font-size: clamp(26px, 6vw, 40px);
  font-weight: 700;
  line-height: 1;
  color: var(--ki-mint);
}

.page-about .about-scale__label {
  display: block;
  font-size: 13px;
  line-height: 1.6;
  color: var(--about-soft);
}

.page-about .about-chapter--paper {
  margin-inline: calc(-1 * var(--ki-gutter));
  padding-inline: var(--ki-gutter);
  padding-block: 44px;
  background: var(--ki-paper);
  border-top: 2px solid var(--ki-ink-line);
  color: var(--ki-ink);
}

.page-about .about-chapter--paper .about-chapter__num {
  -webkit-text-stroke: 1px var(--about-stroke-ink);
}

.page-about .about-chapter--paper .about-chapter__year {
  color: var(--ki-sichuan);
}

.page-about .about-chapter--paper .about-chapter__year::before {
  background: var(--ki-sichuan);
}

.page-about .about-chapter--paper .about-chapter__label {
  color: rgba(16, 21, 40, .58);
}

.page-about .about-chapter--paper .about-chapter__title {
  color: var(--ki-ink);
}

.page-about .about-chapter--paper .about-chapter__content p {
  color: rgba(16, 21, 40, .78);
}

.page-about .about-chapter--paper .about-data {
  background: rgba(228, 69, 58, .1);
  border-left-color: var(--ki-sichuan);
  color: #9E2A21;
}

.page-about .about-chapter--paper .about-data__key {
  border-color: #9E2A21;
}

.page-about .about-chapter--paper .ki-media__caption {
  border-top-color: var(--ki-ink-line);
  color: rgba(16, 21, 40, .6);
}

.page-about .about-team__media {
  margin: 24px 0 20px;
  border: 2px solid var(--ki-ink-line);
  background: var(--ki-white);
  box-shadow: 6px 6px 0 rgba(16, 21, 40, .82);
}

.page-about .about-version__media {
  margin: 26px 0 10px;
  border: 2px solid var(--ki-line);
  background: var(--ki-panel);
}

.page-about .about-versions {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--about-hair);
}

.page-about .about-ver {
  display: grid;
  gap: 10px;
  padding: 18px 0;
  border-bottom: 1px solid var(--about-hair);
  transition: background-color .12s ease-out;
}

.page-about .about-ver:hover,
.page-about .about-ver:focus-within {
  background: rgba(53, 240, 192, .05);
}

.page-about .about-ver__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-about .about-ver__no {
  font-family: var(--ki-font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--ki-mint);
}

.page-about .about-ver__year {
  font-family: var(--ki-font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--ki-muted);
}

.page-about .about-ver__title {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ki-white);
}

.page-about .about-ver__sum {
  margin: 0;
  max-width: 58ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--about-soft);
}

.page-about .about-ver__ext {
  max-height: 0;
  overflow: hidden;
  transition: max-height .24s ease-out, opacity .24s ease-out;
  opacity: 0;
}

.page-about .about-ver:hover .about-ver__ext,
.page-about .about-ver:focus-within .about-ver__ext {
  max-height: 180px;
  opacity: 1;
}

.page-about .about-ver__ext p {
  margin: 10px 0 8px;
  max-width: 58ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--about-soft);
}

.page-about .about-ver__link {
  display: inline-block;
  font-family: var(--ki-font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--ki-mint);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 240, 192, .5);
}

.page-about .about-ver__link:hover {
  border-bottom-color: var(--ki-mint);
}

.page-about .about-cta {
  margin-top: 8px;
  padding: 28px 20px;
  border: 3px solid var(--ki-orange);
  background: rgba(255, 106, 43, .08);
  box-shadow: var(--ki-shadow-orange);
  clip-path: polygon(14px 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%, 0 14px);
}

.page-about .about-cta__title {
  margin: 0 0 12px;
  font-size: clamp(22px, 5vw, 34px);
  font-weight: 900;
  letter-spacing: -.01em;
}

.page-about .about-cta__text {
  max-width: 56ch;
  margin: 0 0 22px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--about-soft);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (min-width: 700px) {
  .page-about .about-layers {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-scale {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-about .about-hero {
    padding: 44px 0 64px;
  }

  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    gap: 56px;
    align-items: center;
  }

  .page-about .about-hero__eyebrow {
    height: 108px;
  }

  .page-about .about-body__inner {
    grid-template-columns: minmax(0, 1fr) 196px;
    gap: 60px;
    padding-block: 56px 80px;
  }

  .page-about .about-index {
    order: 2;
    position: sticky;
    top: 96px;
    align-self: start;
  }

  .page-about .about-flow {
    order: 1;
    min-width: 0;
  }

  .page-about .about-index__title {
    margin-bottom: 14px;
  }

  .page-about .about-index__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding: 0;
  }

  .page-about .about-index__link {
    border: 0;
    border-left: 2px solid var(--ki-line);
    clip-path: none;
    padding: 9px 12px;
  }

  .page-about .about-index__link:hover,
  .page-about .about-index__link:focus-visible {
    border-left-color: var(--ki-mint);
    background: rgba(53, 240, 192, .07);
  }

  .page-about .about-chapter {
    padding: 52px 0 56px;
  }

  .page-about .about-chapter__grid {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 40px;
  }

  .page-about .about-chapter__meta {
    flex-direction: column;
    gap: 8px;
  }

  .page-about .about-coord {
    grid-template-columns: 300px minmax(0, 1fr);
    gap: 32px;
    align-items: start;
  }

  .page-about .about-versions {
    margin-top: 28px;
  }

  .page-about .about-ver {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 24px;
    margin-inline: -14px;
    padding-inline: 14px;
  }

  .page-about .about-ver__head {
    flex-direction: column;
    gap: 4px;
  }

  .page-about .about-cta {
    padding: 40px 44px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-layers__item,
  .page-about .about-ver,
  .page-about .about-ver__ext {
    transition: none;
  }

  .page-about .about-layers__item:hover {
    transform: none;
  }
}