.page-about {
  --about-node: 12px;
  --about-line: rgba(200, 162, 74, 0.30);
  background-color: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
}

.page-about h1,
.page-about h2,
.page-about h3 {
  font-family: var(--font-title);
  font-weight: 900;
  letter-spacing: -0.01em;
}

.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(34px, 6vw, 88px) 0 clamp(38px, 5.5vw, 80px);
  background:
    radial-gradient(880px 480px at 92% -14%, rgba(200, 162, 74, 0.18), transparent 60%),
    linear-gradient(175deg, var(--ink) 0%, var(--ink-2) 100%);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: 0;
  right: 0;
  width: min(60%, 700px);
  height: 100%;
  background: linear-gradient(205deg, rgba(200, 162, 74, 0.14), rgba(63, 167, 156, 0.06) 44%, transparent 74%);
  clip-path: polygon(34% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold) 24%, var(--cinnabar) 70%, transparent);
  opacity: 0.6;
}

.page-about .about-hero__inner {
  position: relative;
}

.page-about .about-hero .crumbs {
  margin-bottom: clamp(24px, 4vw, 42px);
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  max-width: 16ch;
  font-size: clamp(31px, 7.4vw, 68px);
  line-height: 1.14;
  color: var(--paper);
}

.page-about .about-hero__lead {
  margin: clamp(18px, 2.6vw, 28px) 0 0;
  max-width: 60ch;
  font-size: clamp(15.5px, 1.6vw, 18px);
  line-height: 1.82;
  color: rgba(242, 237, 228, 0.88);
}

.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(30px, 5vw, 52px) 0 0;
  padding: 0;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: clamp(15px, 2vw, 24px);
  background: var(--ink-2);
}

.page-about .about-stat__value {
  order: 1;
  margin: 0;
  line-height: 1.1;
}

.page-about .about-stat__num {
  font-family: var(--font-mono);
  font-size: clamp(25px, 3.6vw, 38px);
  letter-spacing: -0.02em;
  color: var(--gold-light);
}

.page-about .about-stat__unit {
  margin-left: 4px;
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--silver);
}

.page-about .about-stat__label {
  order: 2;
  font-size: 13px;
  line-height: 1.5;
  color: var(--silver);
}

/* 01 定位 */
.page-about .about-split {
  display: grid;
  gap: clamp(22px, 3.4vw, 48px);
}

.page-about .about-split__head .rule {
  display: block;
  margin-top: 18px;
}

.page-about .about-split__body p {
  margin: 0 0 16px;
  font-size: clamp(15.5px, 1.4vw, 17px);
  line-height: 1.82;
  color: rgba(242, 237, 228, 0.86);
}

.page-about .about-split__body p:last-child {
  margin-bottom: 0;
}

.page-about .about-cards {
  display: grid;
  gap: clamp(14px, 2vw, 22px);
  margin-top: clamp(26px, 3.6vw, 42px);
}

.page-about .about-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  padding: clamp(18px, 2.4vw, 28px);
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease);
}

.page-about .about-card:hover {
  transform: translateY(-4px);
  border-color: var(--gold);
}

.page-about .about-card__tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(63, 167, 156, 0.5);
  background: rgba(63, 167, 156, 0.12);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: #7fcac2;
}

.page-about .about-card__title {
  margin: 0;
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.4;
  color: var(--paper);
}

.page-about .about-card__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--silver);
}

/* 02 时间线 */
.page-about .about-timeline__grid {
  display: grid;
  gap: clamp(26px, 4vw, 50px);
  margin-top: clamp(26px, 3.6vw, 44px);
}

.page-about .about-timeline__rail-col {
  display: grid;
  gap: 20px;
}

.page-about .about-timeline__figure {
  margin: 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-2);
}

.page-about .about-timeline__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
  opacity: 0.76;
}

.page-about .about-rail__label {
  margin: 0 0 12px;
  padding-left: 12px;
  border-left: 2px solid var(--gold);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--silver);
}

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

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

.page-about .about-rail__list a {
  display: inline-block;
  padding: 7px 15px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-pill);
  background: var(--ink-2);
  font-size: 13px;
  white-space: nowrap;
  text-decoration: none;
  color: var(--silver);
  transition: color 0.25s var(--ease), background 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-about .about-rail__list a:hover,
.page-about .about-rail__list a:focus-visible {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--ink);
}

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

.page-about .about-stages::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 14px;
  bottom: 26px;
  width: 1px;
  background: linear-gradient(180deg, var(--gold) 0%, rgba(200, 162, 74, 0.34) 48%, rgba(200, 162, 74, 0.05) 100%);
}

.page-about .about-stage {
  position: relative;
  padding: 0 0 clamp(20px, 3vw, 32px) clamp(34px, 5vw, 56px);
}

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

.page-about .about-stage__node {
  position: absolute;
  left: 9px;
  top: 24px;
  width: var(--about-node);
  height: var(--about-node);
  border-radius: 50%;
  border: 2px solid var(--gold);
  background: var(--ink);
  box-shadow: 0 0 0 5px rgba(200, 162, 74, 0.1);
}

.page-about .about-stage__card {
  padding: clamp(18px, 2.4vw, 28px) clamp(17px, 2.6vw, 30px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  background: var(--ink-2);
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease);
}

.page-about .about-stage__card:hover {
  transform: translateY(-4px);
  border-color: var(--gold);
}

.page-about .about-stage__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-about .about-stage__title {
  margin: 6px 0 10px;
  font-size: clamp(19px, 2.3vw, 25px);
  line-height: 1.38;
  color: var(--paper);
}

.page-about .about-stage__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--silver);
}

.page-about .about-stage__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

/* 03 版图 */
.page-about .about-map {
  padding-bottom: 0;
}

.page-about .about-map__figure {
  margin: clamp(24px, 3.4vw, 44px) 0 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, var(--ink-2), var(--ink));
}

.page-about .about-map__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  opacity: 0.85;
}

.page-about .about-map__figure figcaption {
  padding: 13px clamp(20px, 5vw, 64px) 17px;
  border-top: 1px solid var(--line-soft);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--silver);
}

.page-about .about-map__notes {
  display: grid;
  gap: 14px;
  margin-top: clamp(22px, 3vw, 36px);
}

.page-about .about-map__note {
  padding: 18px 20px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  background: var(--graphite);
}

.page-about .about-map__note h3 {
  margin: 0 0 8px;
  font-size: 19px;
  color: var(--gold-light);
}

.page-about .about-map__note p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--silver);
}

/* 04 团队 */
.page-about .about-team__grid {
  display: grid;
  gap: clamp(24px, 3.4vw, 44px);
  margin-top: clamp(24px, 3.4vw, 40px);
}

.page-about .about-team__groups {
  display: grid;
  gap: 12px;
}

.page-about .about-team__card {
  padding: 18px 20px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  background: var(--ink-2);
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-about .about-team__card:hover {
  transform: translateY(-4px);
  border-color: var(--gold);
}

.page-about .about-team__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--jade);
}

.page-about .about-team__name {
  margin: 6px 0 8px;
  font-size: 19px;
  color: var(--paper);
}

.page-about .about-team__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--silver);
}

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

.page-about .about-team__figure {
  margin: 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-2);
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
  opacity: 0.82;
}

.page-about .about-team__figure figcaption {
  padding: 13px 20px 16px;
  border-top: 1px solid var(--line-soft);
  font-size: 13.5px;
  color: var(--silver);
}

.page-about .about-review {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-review li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  border-left: 2px solid var(--jade);
  background: var(--graphite);
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--silver);
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-about .about-review li:hover {
  background: rgba(63, 167, 156, 0.1);
  border-left-color: var(--gold);
}

.page-about .about-review li span {
  flex: none;
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--jade);
}

/* 05 协作 */
.page-about .about-partners__list {
  display: grid;
  gap: 14px;
  margin: clamp(24px, 3.2vw, 38px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-partner {
  position: relative;
  overflow: hidden;
  padding: clamp(20px, 2.6vw, 28px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  background: var(--ink-2);
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease);
}

.page-about .about-partner:hover {
  transform: translateY(-4px);
  border-color: var(--gold);
}

.page-about .about-partner__idx {
  position: absolute;
  top: 4px;
  right: 16px;
  font-family: var(--font-mono);
  font-size: 54px;
  line-height: 1;
  letter-spacing: -0.04em;
  color: rgba(242, 237, 228, 0.05);
  pointer-events: none;
}

.page-about .about-partner__name {
  position: relative;
  margin: 0 0 10px;
  font-size: 20px;
  color: var(--gold-light);
}

.page-about .about-partner__text {
  position: relative;
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--silver);
}

/* 收尾 */
.page-about .about-cta {
  margin-top: clamp(36px, 6vw, 78px);
  padding: clamp(36px, 5.5vw, 72px) 0;
  border-top: 1px solid var(--line);
  background:
    radial-gradient(760px 340px at 10% 0%, rgba(200, 162, 74, 0.16), transparent 62%),
    linear-gradient(140deg, var(--ink-2), var(--ink));
}

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

.page-about .about-cta__title {
  margin: 0;
  font-size: clamp(24px, 3.6vw, 40px);
  line-height: 1.3;
  color: var(--paper);
}

.page-about .about-cta__text {
  margin: 12px 0 0;
  max-width: 52ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--silver);
}

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

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

  .page-about .about-map__notes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-about .about-partners__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 940px) {
  .page-about .about-split {
    grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.22fr);
    align-items: start;
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 44px;
  }

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

@media (min-width: 1000px) {
  .page-about .about-timeline__grid {
    grid-template-columns: minmax(0, 262px) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-rail {
    position: sticky;
    top: 104px;
  }

  .page-about .about-rail__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
  }

  .page-about .about-rail__list a {
    display: block;
    padding: 9px 0 9px 14px;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    background: transparent;
  }

  .page-about .about-rail__list a:hover,
  .page-about .about-rail__list a:focus-visible {
    background: transparent;
    border-left-color: var(--gold);
    color: var(--gold-light);
  }

  .page-about .about-map__figure img {
    aspect-ratio: 12 / 8;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: start;
  }
}
<<<END>>>