.page-about {
  --about-track: rgba(200, 162, 74, .24);
  --about-glow: rgba(200, 162, 74, .12);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(28px, 5vw, 64px) 0 clamp(34px, 5vw, 60px);
  background:
    radial-gradient(120% 90% at 6% 0%, var(--about-glow), transparent 62%),
    var(--ink);
  border-bottom: 1px solid var(--line);
}

.page-about .about-hero .breadcrumbs {
  margin-bottom: clamp(24px, 4vw, 46px);
}

.page-about .about-hero h1 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(30px, 5.2vw, 66px);
  line-height: 1.14;
  letter-spacing: .01em;
  color: var(--paper);
  max-width: 15em;
  margin: 0 0 clamp(20px, 3vw, 30px);
}

.page-about .about-hero__lead {
  max-width: 60ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.92;
  color: var(--mist);
  margin: 0 0 clamp(30px, 5vw, 52px);
}

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

.page-about .about-kpi > li {
  background: var(--ink);
  padding: 18px 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.page-about .about-kpi__num {
  font-size: clamp(24px, 3.8vw, 38px);
  line-height: 1;
  color: var(--gold-lt);
  letter-spacing: .04em;
}

.page-about .about-kpi__label {
  font-size: 12px;
  letter-spacing: .08em;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 通栏图 ---------- */
.page-about .about-banner {
  position: relative;
  margin: 0;
  background: var(--slate);
  border-bottom: 1px solid var(--line);
}

.page-about .about-banner img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: clamp(190px, 32vw, 340px);
  object-fit: cover;
  filter: brightness(.68) saturate(.82);
}

.page-about .about-banner figcaption {
  position: absolute;
  left: var(--gutter);
  right: var(--gutter);
  bottom: 16px;
  font-size: 12px;
  letter-spacing: .08em;
  line-height: 1.6;
  color: var(--mist);
  max-width: 30em;
  text-shadow: 0 1px 8px rgba(10, 12, 11, .9);
}

/* ---------- 通用小节头 ---------- */
.page-about .about-head {
  margin-bottom: clamp(26px, 4vw, 44px);
  max-width: 46em;
}

.page-about .about-head--tight {
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-about .about-head h2,
.page-about .about-team__text h2,
.page-about .about-review__main h2,
.page-about .about-cta h2 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(24px, 3vw, 38px);
  line-height: 1.24;
  color: var(--paper);
  margin: 0 0 16px;
  padding-left: 14px;
  border-left: 2px solid var(--gold);
}

.page-about .about-head__lead {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  position: relative;
  overflow: hidden;
  padding: clamp(46px, 7vw, 92px) 0;
  background: var(--slate);
  border-bottom: 1px solid var(--line);
}

.page-about .about-timeline__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  max-width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .14;
  filter: grayscale(.5) brightness(.7);
  pointer-events: none;
}

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

.page-about .about-scale {
  display: flex;
  overflow-x: auto;
  gap: 0;
  padding-bottom: 2px;
  margin-bottom: clamp(28px, 4vw, 48px);
  border-bottom: 1px solid var(--line);
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-scale a {
  flex: 0 0 auto;
  position: relative;
  display: grid;
  gap: 5px;
  padding: 4px 22px 14px 0;
  margin-right: 22px;
  border-right: 1px solid var(--line-soft);
  color: var(--mist);
  text-decoration: none;
  transition: color .2s var(--ease);
}

.page-about .about-scale a:last-child {
  border-right: 0;
  margin-right: 0;
}

.page-about .about-scale a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 22px;
  bottom: 0;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .3s var(--ease);
}

.page-about .about-scale a:hover,
.page-about .about-scale a:focus-visible {
  color: var(--gold-lt);
  outline: none;
}

.page-about .about-scale a:hover::after,
.page-about .about-scale a:focus-visible::after {
  transform: scaleX(1);
}

.page-about .about-scale__year {
  font-size: 17px;
  color: var(--gold-lt);
  letter-spacing: .05em;
}

.page-about .about-scale__label {
  font-size: 12px;
  letter-spacing: .08em;
  white-space: nowrap;
}

.page-about .tl {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 4px;
  bottom: 4px;
  width: 1px;
  background: linear-gradient(180deg,
      transparent,
      var(--line-strong) 4%,
      var(--line-strong) 96%,
      transparent);
}

.page-about .tl__item {
  position: relative;
  padding: 0 0 clamp(34px, 5vw, 56px) 32px;
}

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

.page-about .tl__item::before {
  content: "";
  position: absolute;
  left: 1px;
  top: 8px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--ink);
  border: 1px solid var(--gold);
  box-shadow: 0 0 0 4px rgba(200, 162, 74, .08);
  transition: background .25s var(--ease), box-shadow .25s var(--ease);
}

.page-about .tl__item:target::before {
  background: var(--gold);
  box-shadow: 0 0 0 5px rgba(200, 162, 74, .2);
}

.page-about .tl__item:target h3 {
  color: var(--gold-lt);
}

.page-about .tl__year {
  display: block;
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1;
  letter-spacing: .04em;
  color: var(--gold-lt);
  margin-bottom: 12px;
}

.page-about .tl__item h3 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(18px, 2.1vw, 22px);
  line-height: 1.45;
  color: var(--paper);
  margin: 0 0 12px;
  transition: color .2s var(--ease);
}

.page-about .tl__item p {
  max-width: 62ch;
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.88;
  color: var(--mist);
}

.page-about .tl__note {
  display: block;
  margin: 0;
  padding-left: 12px;
  border-left: 1px solid var(--line);
  font-size: 12.5px;
  letter-spacing: .06em;
  line-height: 1.7;
  color: var(--mist);
  opacity: .82;
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding: clamp(46px, 7vw, 92px) 0;
  background: var(--ink);
  border-bottom: 1px solid var(--line);
}

.page-about .about-team__grid {
  display: grid;
  gap: clamp(30px, 5vw, 56px);
}

.page-about .about-team__text > p {
  max-width: 58ch;
  margin: 0 0 26px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--mist);
}

.page-about .tm {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-about .tm__row {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas:
    "name num"
    "bar bar";
  align-items: center;
  gap: 8px 12px;
  padding: 12px 14px;
  background: var(--slate);
  border-left: 1px solid var(--line);
}

.page-about .tm__name {
  grid-area: name;
  font-size: 14px;
  letter-spacing: .04em;
  color: var(--paper);
}

.page-about .tm__num {
  grid-area: num;
  font-size: 18px;
  color: var(--gold-lt);
  letter-spacing: .04em;
}

.page-about .tm__bar {
  grid-area: bar;
  display: block;
  height: 3px;
  background: rgba(255, 255, 255, .06);
  overflow: hidden;
}

.page-about .tm__fill {
  display: block;
  height: 100%;
  width: var(--w, 0%);
  background: linear-gradient(90deg, var(--gold-deep), var(--gold));
}

.page-about .about-team__fig {
  margin: 0;
  position: relative;
  background: var(--slate);
  border: 1px solid var(--line);
}

.page-about .about-team__fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: brightness(.74) saturate(.85);
}

.page-about .about-team__fig figcaption {
  padding: 12px 16px;
  font-size: 12px;
  letter-spacing: .07em;
  line-height: 1.65;
  color: var(--mist);
  border-top: 1px solid var(--line);
}

/* ---------- 复核 ---------- */
.page-about .about-review {
  padding: clamp(46px, 7vw, 92px) 0;
  background: var(--slate);
  border-bottom: 1px solid var(--line);
}

.page-about .about-review__grid {
  display: grid;
  gap: clamp(30px, 5vw, 48px);
}

.page-about .about-review__main > p {
  max-width: 62ch;
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--mist);
}

.page-about .about-review__aside {
  align-self: start;
}

.page-about .facts {
  margin: 0;
  border-top: 1px solid var(--line-strong);
  background: var(--ink);
}

.page-about .facts__item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding: 13px 16px;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .facts__item:nth-child(odd) {
  background: rgba(255, 255, 255, .022);
}

.page-about .facts dt {
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--mist);
}

.page-about .facts dd {
  margin: 0;
  font-size: 15px;
  letter-spacing: .04em;
  color: var(--gold-lt);
  white-space: nowrap;
}

/* ---------- 覆盖 ---------- */
.page-about .about-coverage {
  padding: clamp(46px, 7vw, 92px) 0;
  background: var(--ink);
  border-bottom: 1px solid var(--line);
}

.page-about .about-coverage__grid {
  display: grid;
  gap: clamp(26px, 4vw, 46px);
}

.page-about .about-coverage__lead > p {
  max-width: 60ch;
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--mist);
}

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

.page-about .cov__item {
  background: var(--slate);
  padding: 20px 16px 22px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.page-about .cov__item--accent {
  background: linear-gradient(150deg, rgba(200, 162, 74, .16), var(--slate) 70%);
}

.page-about .cov__num {
  font-size: clamp(18px, 2.6vw, 28px);
  line-height: 1.1;
  letter-spacing: .03em;
  color: var(--gold-lt);
  word-break: break-word;
}

.page-about .cov__label {
  font-size: 12px;
  letter-spacing: .06em;
  line-height: 1.65;
  color: var(--mist);
}

/* ---------- 做事方式 ---------- */
.page-about .about-principles {
  padding: clamp(46px, 7vw, 92px) 0;
  background:
    linear-gradient(180deg, rgba(200, 162, 74, .05), transparent 40%),
    var(--slate);
  border-bottom: 1px solid var(--line);
}

.page-about .pr {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
}

.page-about .pr__item {
  background: var(--slate);
  padding: 22px 18px 24px;
  display: grid;
  gap: 10px;
  border-left: 2px solid transparent;
  transition: border-color .25s var(--ease), background .25s var(--ease);
}

.page-about .pr__item:hover {
  background: var(--ink);
  border-left-color: var(--gold);
}

.page-about .pr__no {
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--gold);
}

.page-about .pr__item h3 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(17px, 1.9vw, 20px);
  line-height: 1.45;
  color: var(--paper);
  margin: 0;
}

.page-about .pr__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 结尾 ---------- */
.page-about .about-cta {
  padding: clamp(40px, 6vw, 76px) 0 clamp(48px, 7vw, 88px);
  background: var(--ink);
}

.page-about .about-cta__inner {
  display: grid;
  gap: 26px;
  padding: clamp(24px, 4vw, 40px);
  background: var(--glass);
  border: 1px solid var(--line);
  backdrop-filter: blur(6px);
}

.page-about .about-cta h2 {
  margin-bottom: 12px;
}

.page-about .about-cta p {
  margin: 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

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

/* ---------- 媒体查询 ---------- */
@media (min-width: 640px) {
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-about .tm__row {
    grid-template-columns: 1fr auto 140px;
    grid-template-areas: "name num bar";
    align-items: center;
  }

  .page-about .tm__bar {
    height: 3px;
  }
}

@media (min-width: 900px) {
  .page-about .about-kpi > li {
    padding: 24px 22px 26px;
  }

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

  .page-about .about-review__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, .8fr);
    align-items: start;
  }

  .page-about .about-review__aside {
    position: sticky;
    top: calc(var(--beam-h) + 24px);
  }

  .page-about .about-coverage__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .pr {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1.25fr) auto;
    align-items: center;
    gap: 32px;
  }

  .page-about .about-cta__actions {
    justify-content: flex-end;
  }

  .page-about .tl__item {
    padding-left: 44px;
  }

  .page-about .tl::before {
    left: 6px;
  }

  .page-about .tl__item::before {
    left: 1px;
    top: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-scale a::after,
  .page-about .tl__item::before,
  .page-about .tl__item h3,
  .page-about .pr__item {
    transition: none;
  }
}

.page-about {
  --w: 1rem;
}