.page-about {
  --about-rail-w: 11.5rem;
  --about-gap: clamp(1.5rem, 3.5vw, 3rem);
  --about-band: clamp(2.75rem, 6vw, 5rem);
  background: var(--yak);
  color: var(--ink);
}

.page-about .container {
  width: min(100% - (var(--gutter) * 2), var(--maxw));
  margin-inline: auto;
}

/* -------------------------------------------------
   顶部：半开门形区块
------------------------------------------------- */
.page-about .story-gate {
  position: relative;
  padding-block: clamp(1.5rem, 3vw, 2.5rem) clamp(2.5rem, 6vw, 4.5rem);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(220, 233, 247, 0.85), transparent 62%),
    var(--yak);
  overflow: hidden;
}

.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.page-about .breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  color: var(--cobalt-mid);
  border-bottom-color: var(--gold-line);
}

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

.page-about .story-gate__frame {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-gap);
  align-items: center;
}

@media (min-width: 880px) {
  .page-about .story-gate__frame {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.02fr);
    gap: clamp(2rem, 5vw, 4rem);
  }
}

.page-about .story-gate__intro .eyebrow {
  display: inline-block;
  margin: 0 0 1.25rem;
  padding: 0.35rem 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cobalt-mid);
  border: 1px solid var(--gold-line);
}

.page-about .story-gate__intro .display {
  margin: 0 0 1rem;
  font-family: var(--font-sans);
  font-weight: 250;
  font-size: clamp(1.9rem, 5vw, 3.6rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-about .story-gate__lede {
  max-width: 44ch;
  margin: 0 0 1.75rem;
  font-size: 1.0625rem;
  line-height: 1.9;
  color: var(--ink);
}

.page-about .story-gate__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-about .story-gate__door {
  position: relative;
  margin: 0;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--cobalt-deep);
  border: 1px solid var(--gold-line);
  border-radius: 50% 50% 3px 3px / 34% 34% 3px 3px;
  box-shadow: var(--shadow-1);
}

.page-about .story-gate__door img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.94;
}

.page-about .story-gate__door::before {
  content: "";
  position: absolute;
  top: 9%;
  bottom: 0;
  left: 63%;
  width: 2px;
  z-index: 2;
  pointer-events: none;
  background: linear-gradient(180deg, transparent, var(--gold) 30%, var(--gold) 72%, transparent);
  opacity: 0.7;
}

.page-about .story-gate__door::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(180deg, transparent 58%, rgba(11, 60, 140, 0.6) 100%),
    repeating-linear-gradient(90deg, rgba(201, 162, 39, 0.16) 0 1px, transparent 1px 48px);
}

/* -------------------------------------------------
   双栏骨架：左侧章节索引 + 右侧正文
------------------------------------------------- */
.page-about .story-shell {
  padding-block: var(--about-band);
  background: var(--yak);
}

.page-about .story-shell__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}

@media (min-width: 960px) {
  .page-about .story-shell__inner {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: clamp(2.25rem, 4.5vw, 4.5rem);
  }
}

.page-about .index-rail {
  position: relative;
  min-width: 0;
}

@media (min-width: 960px) {
  .page-about .index-rail {
    position: sticky;
    top: calc(var(--header-h) + 1.5rem);
    padding-bottom: 1rem;
  }
}

.page-about .index-rail__title {
  margin: 0 0 0.85rem;
  padding-bottom: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--gold-line);
}

.page-about .index-rail__list {
  position: relative;
  display: grid;
  gap: 0.15rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .index-rail__list::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: var(--hair);
}

.page-about .index-rail__link {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding: 0.45rem 0 0.45rem 0.95rem;
  font-size: 0.875rem;
  line-height: 1.45;
  color: var(--muted);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-about .index-rail__link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.95em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: transparent;
  border: 1px solid var(--gold-line);
  transform: translateY(-50%);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .index-rail__link:hover,
.page-about .index-rail__link:focus-visible {
  color: var(--cobalt-mid);
}

.page-about .index-rail__link.is-current {
  color: var(--saffron);
  font-weight: 600;
}

.page-about .index-rail__link.is-current::before {
  background: var(--saffron);
  border-color: var(--saffron);
  transform: translateY(-50%) scale(1.25);
}

.page-about .index-rail__num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--muted);
}

.page-about .index-rail__link.is-current .index-rail__num {
  color: var(--saffron);
}

/* -------------------------------------------------
   正文文章
------------------------------------------------- */
.page-about .story-article {
  display: grid;
  gap: clamp(3rem, 7vw, 5.5rem);
  min-width: 0;
  overflow-wrap: break-word;
}

.page-about .story-section {
  scroll-margin-top: calc(var(--header-h) + 1.5rem);
  min-width: 0;
}

.page-about .story-section .section-head {
  margin-bottom: clamp(1.25rem, 3vw, 1.9rem);
}

.page-about .story-section .section-head__index {
  display: inline-block;
  padding-bottom: 0.35rem;
  margin-bottom: 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  color: var(--saffron);
  border-bottom: 1px solid var(--gold-line);
}

.page-about .story-section .section-head__title {
  margin: 0 0 0.55rem;
  font-size: clamp(1.4rem, 2.7vw, 1.95rem);
  font-weight: 700;
  line-height: 1.32;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .story-section .section-head__desc {
  margin: 0;
  max-width: 58ch;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .story-section p {
  max-width: 62ch;
  margin: 0 0 1.3em;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--ink);
}

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

.page-about .story-section a {
  color: var(--cobalt-mid);
  text-decoration: none;
  border-bottom: 1px solid var(--gold-line);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .story-section a:hover,
.page-about .story-section a:focus-visible {
  color: var(--saffron);
  border-bottom-color: var(--saffron);
}

/* -------------------------------------------------
   时间线
------------------------------------------------- */
.page-about .story-timeline__media {
  margin: 0 0 clamp(1.75rem, 4vw, 2.5rem);
}

.page-about .media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  background: var(--cobalt-deep);
  border: 1px solid var(--hair);
  border-radius: var(--radius);
}

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

.page-about .media-frame--2x1 img {
  aspect-ratio: 2 / 1;
}

.page-about .media-frame--3x2 img {
  aspect-ratio: 3 / 2;
}

.page-about .media-caption {
  display: block;
  padding: 0.65rem 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--muted);
  background: var(--surface);
  border-top: 1px solid var(--hair);
}

.page-about .story-timeline {
  position: relative;
  margin: 0;
  padding: 0 0 0 2rem;
  list-style: none;
}

.page-about .story-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 14px;
  bottom: 14px;
  width: 2px;
  background: linear-gradient(180deg, var(--cobalt-bright) 0%, var(--cobalt-mid) 55%, var(--cobalt-deep) 100%);
}

.page-about .story-timeline__item {
  position: relative;
  padding-bottom: clamp(1.5rem, 3vw, 2.2rem);
}

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

.page-about .story-timeline__item::before {
  content: "";
  position: absolute;
  left: -2rem;
  top: 0.72em;
  width: 12px;
  height: 2px;
  background: var(--gold);
  transform-origin: left center;
  transition: width 0.6s var(--ease);
}

.page-about .story-timeline__item.is-visible::before {
  width: 26px;
}

.page-about .story-timeline__year {
  display: inline-block;
  margin-bottom: 0.6rem;
  padding: 0.15rem 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--cobalt-mid);
  border: 1px solid var(--gold-line);
}

.page-about .story-timeline__title {
  margin: 0 0 0.4rem;
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
}

.page-about .story-timeline__desc {
  max-width: 54ch;
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--muted);
}

/* -------------------------------------------------
   团队仪表板
------------------------------------------------- */
.page-about .story-team__media {
  margin: 0 0 clamp(1.75rem, 4vw, 2.5rem);
}

.page-about .story-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 640px) {
  .page-about .story-team__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1040px) {
  .page-about .story-team__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.125rem;
  }
}

.page-about .story-team__card {
  position: relative;
  padding: 1.35rem 1.25rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--hair);
  border-top: 2px solid var(--cobalt-mid);
  box-shadow: var(--shadow-2);
  transition: border-top-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .story-team__card:hover,
.page-about .story-team__card:focus-within {
  border-top-color: var(--saffron);
  box-shadow: var(--shadow-1);
  transform: translateY(-2px);
}

.page-about .story-team__role {
  margin: 0 0 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-about .story-team__num {
  margin: 0 0 0.55rem;
  font-family: var(--font-mono);
  font-size: 2.1rem;
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cobalt-deep);
}

.page-about .story-team__num small {
  margin-left: 0.3rem;
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--muted);
}

.page-about .story-team__summary {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--ink);
}

.page-about .story-team__more {
  margin: 0.6rem 0 0;
  padding-left: 0.75rem;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--muted);
  border-left: 2px solid transparent;
  transition: border-left-color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.page-about .story-team__card:hover .story-team__more,
.page-about .story-team__card:focus-within .story-team__more {
  border-left-color: var(--saffron);
  padding-left: 1rem;
}

.page-about .story-team__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(1.75rem, 4vw, 2.5rem);
  background: var(--hair);
  border: 1px solid var(--hair);
}

@media (min-width: 720px) {
  .page-about .story-team__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .story-team__stats .metric {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 1.25rem 1.1rem;
  background: var(--surface);
}

.page-about .story-team__stats .metric__value {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cobalt-deep);
}

.page-about .story-team__stats .metric__value small {
  margin-left: 0.2rem;
  font-size: 0.78rem;
  font-weight: 400;
  color: var(--muted);
}

.page-about .story-team__stats .metric__label {
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--muted);
}

.page-about .story-team__note {
  margin-top: clamp(1.5rem, 3.5vw, 2.25rem) !important;
  padding: 1.15rem 1.25rem;
  background: var(--sky);
  border-left: 2px solid var(--cobalt-mid);
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--ink);
}

.page-about .story-team__note a {
  color: var(--cobalt-deep);
  font-weight: 600;
}

/* -------------------------------------------------
   合作网络
------------------------------------------------- */
.page-about .story-network__figure {
  margin: 0 0 clamp(1.75rem, 4vw, 2.5rem);
  padding: 1.25rem 1rem 0.5rem;
  background: var(--surface);
  border: 1px solid var(--hair);
  border-radius: var(--radius);
}

.page-about .story-network__graph {
  display: block;
  width: 100%;
  height: auto;
  max-width: 640px;
  margin: 0 auto;
}

.page-about .story-network__figure .media-caption {
  padding: 0.65rem 0 0.35rem;
  background: transparent;
  border-top: 0;
  text-align: center;
}

.page-about .story-network {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

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

.page-about .story-network__node {
  position: relative;
  padding: 1.4rem 1.25rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--hair);
  box-shadow: var(--shadow-2);
}

.page-about .story-network__node::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 1.15rem;
  height: 1.15rem;
  border-top: 2px solid var(--gold);
  border-left: 2px solid var(--gold);
}

.page-about .story-network__num {
  margin: 0 0 0.5rem;
  font-family: var(--font-mono);
  font-size: 1.9rem;
  font-weight: 400;
  line-height: 1;
  color: var(--cobalt-deep);
}

.page-about .story-network__num small {
  margin-left: 0.25rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.page-about .story-network__title {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
}

.page-about .story-network__desc {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .story-honors {
  margin-top: clamp(1.75rem, 4vw, 2.5rem);
  padding: 1.35rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--hair);
  border-top: 2px solid var(--gold);
}

.page-about .story-honors__title {
  margin: 0 0 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-about .story-honors__list {
  display: grid;
  gap: 0.75rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .story-honors__item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--ink);
}

/* -------------------------------------------------
   地域坐标与备案
------------------------------------------------- */
.page-about .story-locale {
  position: relative;
  margin-top: 1.25rem;
  padding: clamp(1.75rem, 4vw, 2.75rem) clamp(1.35rem, 3.5vw, 2.25rem);
  background: var(--cobalt-deep);
  color: var(--on-deep);
  overflow: hidden;
}

.page-about .story-locale::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    repeating-linear-gradient(0deg, rgba(247, 242, 232, 0.06) 0 1px, transparent 1px 22px),
    repeating-linear-gradient(90deg, rgba(247, 242, 232, 0.05) 0 1px, transparent 1px 22px);
}

.page-about .story-locale::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gold-line);
}

.page-about .story-locale__list {
  position: relative;
  margin: 0;
}

.page-about .story-locale__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.35rem;
  padding: 0.95rem 0;
  border-bottom: 1px solid rgba(247, 242, 232, 0.14);
}

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

.page-about .story-locale__row:first-child {
  padding-top: 0;
}

@media (min-width: 560px) {
  .page-about .story-locale__row {
    grid-template-columns: 8.5rem minmax(0, 1fr);
    gap: 1rem;
    align-items: baseline;
  }
}

.page-about .story-locale__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--on-deep-dim);
}

.page-about .story-locale__value {
  margin: 0;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--on-deep);
  overflow-wrap: break-word;
}

.page-about .story-locale__value .tag-mono {
  color: var(--on-deep);
  border-color: var(--gold-line);
}

.page-about .story-locale__value a {
  color: var(--on-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--gold-line);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .story-locale__value a:hover,
.page-about .story-locale__value a:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.page-about .story-locale__outro {
  margin-top: 1.5rem !important;
  font-size: 0.9375rem;
  color: var(--muted);
}

/* -------------------------------------------------
   动效降级
------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .story-timeline__item::before,
  .page-about .story-team__card,
  .page-about .story-team__more,
  .page-about .index-rail__link,
  .page-about .index-rail__link::before,
  .page-about .story-gate__door img,
  .page-about .breadcrumb a {
    transition: none !important;
  }

  .page-about .story-timeline__item::before {
    width: 26px;
  }
}
<<<END>>>