.page-about {
  --cut: 16px;
  --about-rail: 92px;
  padding-bottom: 64px;
}

.page-about .about-hero {
  padding-top: 18px;
}

.page-about .hero-grid {
  display: grid;
  gap: 22px;
  margin-top: 20px;
}

.page-about .hero-kicker {
  display: inline-block;
  margin: 0 0 14px;
  padding: 5px 12px;
  background: var(--orange);
  color: var(--paper);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
}

.page-about h1 {
  margin: 0 0 16px;
  font-size: clamp(29px, 6vw, 54px);
  line-height: 1.16;
  letter-spacing: -.015em;
  font-weight: 900;
  color: var(--ink);
}

.page-about .hero-lead {
  margin: 0;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink);
}

.page-about .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-about .hero-facts {
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 6px solid var(--amber);
}

.page-about .hero-facts .card__inner {
  padding: 20px 18px;
}

.page-about .facts-title {
  margin: 0 0 14px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--grey);
}

.page-about .facts-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .facts-num {
  display: block;
  font-size: 28px;
  line-height: 1.05;
  font-weight: 900;
  color: var(--orange);
  letter-spacing: -.02em;
}

.page-about .facts-label {
  display: block;
  margin-top: 4px;
  font-size: 12.5px;
  color: var(--grey);
  line-height: 1.5;
}

.page-about .about-section {
  margin-top: 56px;
}

.page-about .section-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 16px;
  align-items: start;
  margin-bottom: 26px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--ink);
}

.page-about .section-head .section-num {
  grid-row: span 2;
  font-size: clamp(42px, 9vw, 82px);
  line-height: .84;
  font-weight: 900;
  color: var(--orange);
  letter-spacing: -.03em;
}

.page-about .section-head h2 {
  margin: 0;
  font-size: clamp(20px, 3.4vw, 31px);
  line-height: 1.28;
  font-weight: 900;
  color: var(--ink);
}

.page-about .section-lead {
  grid-column: 2;
  margin: 6px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--grey);
}

.page-about .body-text {
  margin: 0 0 14px;
  max-width: 44em;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--ink);
}

.page-about .body-text a {
  color: var(--orange);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid var(--orange);
}

.page-about .body-text a:hover,
.page-about .body-text a:focus-visible {
  color: var(--orange-deep);
  border-bottom-color: var(--orange-deep);
}

.page-about .media {
  margin: 0;
  overflow: hidden;
  background: var(--cream);
  border: 1px solid var(--line);
  background-image: repeating-linear-gradient(
    -45deg,
    rgba(23, 24, 26, .05) 0 2px,
    transparent 2px 12px
  );
}

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

.page-about .why-grid {
  display: grid;
  gap: 22px;
}

/* ---- 时间线：竖向年份标尺 ---- */
.page-about .time-wrap {
  display: grid;
  gap: 18px;
}

.page-about .year-rail ul {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 4px 0 10px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .year-rail li {
  flex: 0 0 auto;
}

.page-about .year-rail a {
  display: inline-block;
  padding: 6px 12px;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--grey);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .08em;
  text-decoration: none;
  font-variant-numeric: tabular-nums;
}

.page-about .year-rail a:hover,
.page-about .year-rail a:focus-visible {
  border-color: var(--orange);
  color: var(--orange);
}

.page-about .year-rail a[aria-current="true"] {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--paper);
}

.page-about .timeline {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .tl {
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 5px solid var(--line);
  transition: border-color .2s var(--ease), transform .2s var(--ease);
}

.page-about .tl:hover {
  border-left-color: var(--orange);
  transform: translateY(-2px);
}

.page-about .tl[open] {
  border-left-color: var(--orange);
}

.page-about .tl__summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

.page-about .tl__summary::-webkit-details-marker {
  display: none;
}

.page-about .tl__year {
  flex: 0 0 auto;
  font-size: 19px;
  font-weight: 900;
  color: var(--orange);
  letter-spacing: -.01em;
}

.page-about .tl__title {
  flex: 1 1 auto;
  font-size: 16px;
  font-weight: 800;
  line-height: 1.5;
  color: var(--ink);
}

.page-about .tl__chev {
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--orange);
  border-bottom: 2px solid var(--orange);
  transform: rotate(45deg);
  transition: transform .2s var(--ease);
}

.page-about .tl[open] .tl__chev {
  transform: rotate(225deg);
}

.page-about .tl__body {
  margin: 0;
  padding: 0 18px 18px 18px;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--ink);
}

.page-about .tl__body a {
  color: var(--orange);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid var(--orange);
}

/* ---- 团队职能卡 ---- */
.page-about .team-grid {
  display: grid;
  gap: 16px;
  margin-bottom: 22px;
}

.page-about .fn-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 6px solid var(--amber);
  transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-left-color .2s var(--ease);
}

.page-about .fn-card .card__inner {
  padding: 20px 18px 18px;
}

.page-about .fn-card:hover,
.page-about .fn-card:focus-within {
  transform: translateY(-4px);
  border-left-color: var(--orange);
  box-shadow: var(--shadow-1);
}

.page-about .fn-card:focus-visible {
  outline: 3px solid var(--orange);
  outline-offset: 2px;
}

.page-about .fn-num {
  display: block;
  font-size: 48px;
  line-height: 1;
  font-weight: 900;
  letter-spacing: -.03em;
  color: var(--orange);
}

.page-about .fn-title {
  margin: 10px 0 8px;
  font-size: 18px;
  font-weight: 900;
  color: var(--ink);
}

.page-about .fn-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ink);
}

.page-about .fn-more {
  margin: 12px 0 0;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  font-size: 13px;
  line-height: 1.75;
  color: var(--grey);
}

.page-about .team-media {
  margin-bottom: 18px;
}

.page-about .team-note {
  padding-left: 14px;
  border-left: 4px solid var(--teal);
  color: var(--ink);
}

/* ---- 窄条数据横带 ---- */
.page-about .stat-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0 0 24px;
  background: var(--line);
  border-top: 3px solid var(--teal);
  border-bottom: 3px solid var(--teal);
}

.page-about .stat {
  padding: 14px 16px;
  background: var(--paper);
}

.page-about .stat-num {
  display: block;
  font-size: 26px;
  line-height: 1.1;
  font-weight: 900;
  color: var(--teal-deep);
  letter-spacing: -.02em;
}

.page-about .stat-label {
  display: block;
  margin-top: 3px;
  font-size: 12.5px;
  color: var(--grey);
  letter-spacing: .04em;
}

.page-about .catalog-grid {
  display: grid;
  gap: 22px;
}

/* ---- 荣誉 ---- */
.page-about .award-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .award-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 16px;
  align-items: start;
  padding: 18px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-top: 4px solid var(--amber-light);
}

.page-about .award-year {
  font-size: 22px;
  font-weight: 900;
  color: var(--amber);
  letter-spacing: -.01em;
}

.page-about .award-title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 900;
  color: var(--ink);
}

.page-about .award-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ink);
}

.page-about .award-item .tag {
  grid-column: 2;
  justify-self: start;
  margin-top: 4px;
}

/* ---- 备案与联系横带 ---- */
.page-about .info-band {
  display: grid;
  gap: 20px;
  padding: 22px 18px;
  background: var(--paper);
  border-top: 3px solid var(--teal);
  border-bottom: 1px solid var(--line);
}

.page-about .info-band__text .body-text {
  margin-bottom: 16px;
}

.page-about .info-band__link {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0;
}

.page-about .info-band__list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
}

.page-about .info-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--line);
}

.page-about .info-row dt {
  font-size: 13px;
  color: var(--grey);
  letter-spacing: .04em;
}

.page-about .info-row dd {
  margin: 0;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--ink);
  text-align: right;
}

@media (min-width: 760px) {
  .page-about .team-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .stat-strip {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-about .award-item {
    grid-template-columns: 84px minmax(0, 1fr) auto;
    align-items: center;
    gap: 16px;
    padding: 20px 22px;
  }

  .page-about .award-item .tag {
    grid-column: 3;
    margin-top: 0;
  }
}

@media (min-width: 900px) {
  .page-about .hero-grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: start;
    gap: 40px;
    margin-top: 26px;
  }

  .page-about .hero-facts .card__inner {
    padding: 24px 22px;
  }

  .page-about .about-section {
    margin-top: 88px;
  }

  .page-about .section-head {
    gap: 4px 24px;
    margin-bottom: 32px;
    padding-bottom: 18px;
  }

  .page-about .why-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, .82fr);
    align-items: center;
    gap: 40px;
  }

  .page-about .time-wrap {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: 36px;
  }

  .page-about .year-rail {
    position: sticky;
    top: 108px;
    align-self: start;
  }

  .page-about .year-rail ul {
    flex-direction: column;
    overflow: visible;
    gap: 22px;
    padding: 6px 0 6px 22px;
    position: relative;
  }

  .page-about .year-rail ul::before {
    content: "";
    position: absolute;
    left: 5px;
    top: 12px;
    bottom: 12px;
    width: 2px;
    background: var(--line);
  }

  .page-about .year-rail a {
    position: relative;
    padding: 0;
    border: 0;
    background: none;
    font-size: 13px;
  }

  .page-about .year-rail a::before {
    content: "";
    position: absolute;
    left: -22px;
    top: 50%;
    width: 9px;
    height: 9px;
    margin-top: -5px;
    border: 2px solid var(--line);
    border-radius: 50%;
    background: var(--cream);
    transition: background .2s var(--ease), border-color .2s var(--ease);
  }

  .page-about .year-rail a:hover {
    background: none;
  }

  .page-about .year-rail a[aria-current="true"] {
    background: none;
    color: var(--orange);
  }

  .page-about .year-rail a[aria-current="true"]::before {
    background: var(--orange);
    border-color: var(--orange);
  }

  .page-about .catalog-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: start;
    gap: 40px;
  }

  .page-about .info-band {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
    gap: 40px;
    padding: 26px 28px;
  }

  .page-about .fn-more {
    opacity: 0;
    transform: translateY(6px);
    transition: opacity .2s var(--ease), transform .2s var(--ease);
  }

  .page-about .fn-card:hover .fn-more,
  .page-about .fn-card:focus-within .fn-more {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .tl,
  .page-about .fn-card,
  .page-about .tl__chev,
  .page-about .fn-more,
  .page-about .year-rail a::before {
    transition: none;
  }

  .page-about .tl:hover,
  .page-about .fn-card:hover,
  .page-about .fn-card:focus-within {
    transform: none;
  }

  .page-about .fn-more {
    opacity: 1;
    transform: none;
  }
}
<<<END>>>