.page-about {
  --about-rail: 176px;
}

/* ---------- Hero ---------- */
.page-about .about-hero {
  position: relative;
  padding: 104px 0 48px;
  overflow: hidden;
  background:
    radial-gradient(120% 80% at 88% 4%, rgba(46, 108, 147, .28) 0%, rgba(10, 22, 34, 0) 62%),
    linear-gradient(180deg, var(--wc-night) 0%, var(--wc-deep) 100%);
}

.page-about .about-hero__grid {
  display: grid;
  gap: 40px;
  margin-top: 32px;
}

.page-about .about-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 22px;
  font-family: var(--wc-mono);
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--wc-mist);
}

.page-about .about-kicker__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--wc-orange);
  box-shadow: 0 0 0 5px rgba(217, 116, 58, .16);
}

.page-about .about-hero__title {
  margin: 0 0 26px;
  font-size: clamp(40px, 11.5vw, 112px);
  line-height: .96;
  letter-spacing: -.03em;
  font-weight: 900;
  color: var(--wc-snow);
}

.page-about .about-gold {
  color: var(--wc-gold);
}

.page-about .about-hero__lead {
  max-width: 46ch;
  margin: 0;
  color: var(--wc-mist);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.page-about .about-hero__aside {
  padding: 22px 20px;
  border: var(--wc-line);
  background: rgba(20, 48, 74, .62);
  box-shadow: var(--wc-shadow);
  backdrop-filter: blur(2px);
}

.page-about .about-facts {
  margin: 14px 0 0;
}

.page-about .about-facts__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 13px 0;
  border-bottom: var(--wc-line);
}

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

.page-about .about-facts dt {
  font-size: 13px;
  color: var(--wc-mist);
}

.page-about .about-facts dd {
  margin: 0;
  font-size: 20px;
  color: var(--wc-snow);
}

.page-about .about-mono {
  font-family: var(--wc-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -.01em;
}

.page-about .about-hero__ridge {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 84px;
  opacity: .6;
  pointer-events: none;
}

.page-about .about-hero__ridge svg {
  display: block;
  width: 100%;
  height: 100%;
}

.page-about .about-band {
  height: 5px;
  background: linear-gradient(90deg,
    var(--wc-gold) 0 26%,
    var(--wc-glacier) 26% 54%,
    var(--wc-grass) 54% 78%,
    var(--wc-orange) 78% 100%);
  opacity: .8;
}

/* ---------- 通用区块 ---------- */
.page-about .about-block {
  padding: 60px 0;
  border-top: var(--wc-line);
  background: var(--wc-deep);
}

.page-about .about-block--last {
  background: linear-gradient(180deg, var(--wc-deep) 0%, var(--wc-night) 100%);
}

.page-about .about-head {
  margin-bottom: 30px;
}

.page-about .about-block__title {
  margin: 10px 0 0;
  font-size: clamp(26px, 6vw, 44px);
  line-height: 1.1;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--wc-snow);
}

.page-about .about-block__note {
  max-width: 60ch;
  margin: 14px 0 0;
  font-size: 16px;
  color: var(--wc-mist);
}

.page-about .about-columns {
  display: grid;
  gap: 18px;
}

.page-about .about-figure {
  margin: 0;
  border: var(--wc-line);
  background: var(--wc-strata);
  overflow: hidden;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-about .about-figure figcaption {
  padding: 12px 16px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--wc-mist);
  border-top: var(--wc-line);
}

.page-about .about-figure--wide {
  margin-bottom: 36px;
}

.page-about .about-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

/* ---------- 时间轴 ---------- */
.page-about .about-tl__list {
  position: relative;
  display: grid;
}

.page-about .about-tl {
  position: relative;
  display: grid;
  gap: 14px;
  padding: 30px 0;
  border-top: var(--wc-line);
}

.page-about .about-tl:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-tl__year {
  position: relative;
  font-family: var(--wc-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(46px, 15vw, 88px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--wc-glacier);
}

.page-about .about-tl__year a {
  color: inherit;
  text-decoration: none;
  transition: color var(--wc-t) var(--wc-ease);
}

.page-about .about-tl__year a:hover,
.page-about .about-tl__year a:focus-visible {
  color: var(--wc-gold);
}

.page-about .about-tl__label {
  margin: 0 0 8px;
  font-family: var(--wc-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--wc-gold);
}

.page-about .about-tl__title {
  margin: 0 0 12px;
  font-size: 22px;
  line-height: 1.3;
  font-weight: 800;
  color: var(--wc-snow);
}

.page-about .about-tl__body .wc-prose {
  margin: 0;
}

.page-about .about-tl__more {
  margin: 16px 0 0;
  font-size: 15px;
}

/* ---------- 团队生产 ---------- */
.page-about .about-split {
  display: grid;
  gap: 30px;
}

.page-about .about-split__text .wc-prose {
  margin: 0 0 16px;
}

.page-about .about-bar {
  display: flex;
  height: 14px;
  margin: 26px 0 14px;
  border: var(--wc-line);
  background: var(--wc-night);
  overflow: hidden;
}

.page-about .about-bar__seg {
  display: block;
  transition: opacity var(--wc-t) var(--wc-ease);
}

.page-about .about-bar__seg--a {
  flex: 14;
  background: var(--wc-gold);
}

.page-about .about-bar__seg--b {
  flex: 54;
  background: var(--wc-glacier);
}

.page-about .about-bar:hover .about-bar__seg {
  opacity: .72;
}

.page-about .about-bar__legend {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-bar__legend-item {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 14px;
  color: var(--wc-mist);
}

.page-about .about-bar__legend-item b {
  color: var(--wc-snow);
  font-weight: 600;
}

.page-about .about-bar__swatch {
  width: 12px;
  height: 12px;
  flex: none;
  display: block;
}

.page-about .about-bar__swatch--a { background: var(--wc-gold); }
.page-about .about-bar__swatch--b { background: var(--wc-glacier); }

/* ---------- 基地 ---------- */
.page-about .about-base__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  background: var(--wc-pass);
  border: var(--wc-line);
}

.page-about .about-base__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 18px;
  background: var(--wc-strata);
}

.page-about .about-base__num {
  font-size: clamp(28px, 7vw, 40px);
  font-weight: 600;
  line-height: 1;
  color: var(--wc-gold);
}

.page-about .about-base__unit {
  font-size: 13px;
  line-height: 1.5;
  color: var(--wc-mist);
}

/* ---------- 覆盖范围 ---------- */
.page-about .about-figure--square img {
  aspect-ratio: 1 / 1;
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  background: var(--wc-pass);
  border: var(--wc-line);
}

.page-about .about-stats__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 14px;
  background: var(--wc-deep);
}

.page-about .about-stats__num {
  font-size: clamp(24px, 6vw, 34px);
  font-weight: 600;
  line-height: 1.05;
  color: var(--wc-snow);
}

.page-about .about-stats__unit {
  font-size: 13px;
  color: var(--wc-mist);
}

/* ---------- 合作 ---------- */
.page-about .about-partner__grid {
  display: grid;
  gap: 1px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  background: var(--wc-pass);
  border: var(--wc-line);
}

.page-about .about-partner__item {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 18px 16px;
  background: var(--wc-strata);
}

.page-about .about-partner__num {
  flex: none;
  min-width: 60px;
  font-size: 30px;
  font-weight: 600;
  line-height: 1;
  color: var(--wc-gold);
}

.page-about .about-partner__label {
  font-size: 15px;
  color: var(--wc-snow);
}

/* ---------- 原则 ---------- */
.page-about .about-principles {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: var(--wc-line);
}

.page-about .about-principles__item {
  position: relative;
  padding: 24px 0 24px 20px;
  border-bottom: var(--wc-line);
}

.page-about .about-principles__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 24px;
  bottom: 24px;
  width: 2px;
  background: var(--wc-gold);
  opacity: 0;
  transform: scaleY(.3);
  transform-origin: top;
  transition: opacity var(--wc-t) var(--wc-ease), transform var(--wc-t) var(--wc-ease);
}

.page-about .about-principles__item:hover::before,
.page-about .about-principles__item:focus-within::before {
  opacity: 1;
  transform: scaleY(1);
}

.page-about .about-principles__title {
  margin: 0 0 10px;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--wc-snow);
  transition: color var(--wc-t) var(--wc-ease);
}

.page-about .about-principles__item:hover .about-principles__title {
  color: var(--wc-gold-soft);
}

.page-about .about-principles__text {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--wc-mist);
}

.page-about .about-outro {
  margin-top: 34px;
  padding: 22px 20px;
  border: var(--wc-line);
  border-left: 2px solid var(--wc-gold);
  background: rgba(20, 48, 74, .55);
}

.page-about .about-outro__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--wc-mist);
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 132px 0 72px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1fr) 336px;
    gap: 56px;
    align-items: end;
  }

  .page-about .about-hero__ridge {
    height: 130px;
  }

  .page-about .about-block {
    padding: 84px 0;
  }

  .page-about .about-columns {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 40px;
    align-items: start;
  }

  .page-about .about-tl {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    column-gap: 48px;
    padding: 38px 0;
  }

  .page-about .about-tl__list::before {
    content: "";
    position: absolute;
    top: 10px;
    bottom: 10px;
    left: calc(var(--about-rail) + 24px);
    width: 1px;
    background: linear-gradient(180deg,
      rgba(30, 69, 104, 0) 0%,
      var(--wc-pass) 10%,
      var(--wc-pass) 90%,
      rgba(30, 69, 104, 0) 100%);
  }

  .page-about .about-tl__year::after {
    content: "";
    position: absolute;
    right: -28px;
    top: 50%;
    width: 8px;
    height: 8px;
    margin-top: -4px;
    border-radius: 50%;
    background: var(--wc-pass);
    transition: background var(--wc-t) var(--wc-ease), transform var(--wc-t) var(--wc-ease);
  }

  .page-about .about-tl:hover .about-tl__year::after {
    background: var(--wc-gold);
    transform: scale(1.6);
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .about-split--media-first {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
  }

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

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

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

  .page-about .about-partner__item {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .page-about .about-principles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 48px;
    border-top: 0;
  }

  .page-about .about-principles__item {
    border-top: var(--wc-line);
  }
}

@media (min-width: 1180px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1fr) 360px;
  }
}
<<<END>>>