.page-about {
  --about-rule: rgba(78, 143, 107, 0.22);
  --about-soft: rgba(244, 239, 228, 0.68);
  --about-scale-w: 150px;
  display: block;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(1.25rem, 4vw, 2rem) 0 clamp(2rem, 6vw, 3.5rem);
  isolation: isolate;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  top: -22%;
  right: -12%;
  width: min(58vw, 620px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232, 181, 74, 0.22), rgba(232, 181, 74, 0) 68%);
  pointer-events: none;
}

.page-about .hero-grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
}

.page-about .hero-copy h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 6.2vw, 4.1rem);
  line-height: 1.05;
  letter-spacing: -0.01em;
  margin: 0.5rem 0 0;
  color: var(--cream);
  max-width: 18ch;
}

.page-about .hero-lede {
  margin: 1.25rem 0 0;
  max-width: 54ch;
  font-size: clamp(1rem, 1.6vw, 1.12rem);
  line-height: 1.85;
  color: var(--text-soft);
}

.page-about .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: clamp(1.5rem, 3vw, 2rem);
}

.page-about .hero-aside {
  position: relative;
  padding: clamp(1.25rem, 3vw, 1.75rem);
  border: 1px solid var(--hair);
  border-radius: var(--radius-m);
  background: linear-gradient(160deg, rgba(20, 50, 42, 0.92), rgba(14, 31, 26, 0.6));
  box-shadow: var(--shadow-lift);
}

.page-about .hero-aside > .sidenote {
  position: absolute;
  top: clamp(1rem, 3vw, 1.4rem);
  right: clamp(1rem, 3vw, 1.4rem);
  writing-mode: vertical-rl;
  letter-spacing: 0.22em;
  font-size: 0.7rem;
  color: var(--gold);
  opacity: 0.85;
}

.page-about .hero-facts {
  margin: 0;
  display: grid;
  gap: 0.9rem;
  padding-right: 2.2rem;
}

.page-about .fact {
  display: grid;
  gap: 0.15rem;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--hair-soft);
}

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

.page-about .fact dt {
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  color: var(--stone);
}

.page-about .fact dd {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.6;
  color: var(--cream);
}

.page-about .num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--gold);
}

/* ---------- 章节目录 ---------- */

.page-about .about-toc {
  border-top: 1px solid var(--hair-soft);
  border-bottom: 1px solid var(--hair-soft);
  padding: 0.7rem 0;
  background: rgba(8, 17, 14, 0.45);
}

.page-about .toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.15rem;
}

.page-about .toc-list a {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  padding: 0.6rem 0.7rem;
  border-radius: var(--radius-s);
  font-size: 0.86rem;
  line-height: 1.5;
  color: var(--text-soft);
  text-decoration: none;
  transition: background 0.22s var(--ease), color 0.22s var(--ease);
}

.page-about .toc-list a:hover {
  color: var(--cream);
  background: rgba(47, 93, 74, 0.35);
}

.page-about .toc-list a[aria-current="true"] {
  color: var(--night);
  background: var(--gold);
}

.page-about .toc-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  opacity: 0.82;
}

/* ---------- 章节通用 ---------- */

.page-about .about-origin,
.page-about .about-eras,
.page-about .about-team,
.page-about .about-partners,
.page-about .about-honors,
.page-about .about-next {
  padding: clamp(2.5rem, 7vw, 4.5rem) 0;
}

.page-about .section-head {
  max-width: 68ch;
}

.page-about .section-lede {
  margin: 1rem 0 0;
  max-width: 60ch;
  color: var(--text-soft);
  line-height: 1.85;
}

.page-about .origin-body h2,
.page-about .section-head h2,
.page-about .partners-body h2,
.page-about .honors-panel h2,
.page-about .next-copy h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.55rem, 3.6vw, 2.6rem);
  line-height: 1.16;
  letter-spacing: -0.005em;
  margin: 0.45rem 0 0;
  color: var(--cream);
  max-width: 24ch;
}

/* ---------- 第一段：看台视角 ---------- */

.page-about .origin-grid {
  display: grid;
  gap: clamp(1.75rem, 5vw, 3rem);
}

.page-about .origin-body p {
  margin: 1.05rem 0 0;
  max-width: 62ch;
  color: var(--text-soft);
  line-height: 1.88;
}

.page-about .dropcap::first-letter {
  float: left;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 3.1em;
  line-height: 0.84;
  margin: 0.06em 0.14em 0 0;
  color: var(--gold);
}

.page-about .origin-figure {
  margin: 0;
}

.page-about .stand-svg {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--hair-soft);
  border-radius: var(--radius-m);
  background: linear-gradient(180deg, rgba(8, 17, 14, 0.92), rgba(20, 50, 42, 0.5));
}

.page-about .origin-figure figcaption {
  margin-top: 0.7rem;
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--stone);
}

/* ---------- 第二段：时间轴 ---------- */

.page-about .eras-frame {
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 0;
}

.page-about .track {
  list-style: none;
  margin: clamp(1.5rem, 4vw, 2.5rem) 0 0;
  padding: 0;
}

.page-about .track-item {
  position: relative;
  display: grid;
  gap: 0.9rem;
  padding: clamp(1.4rem, 4vw, 2.2rem) 0;
  border-top: 1px solid var(--hair-soft);
}

.page-about .track-item:last-child {
  border-bottom: 1px solid var(--hair-soft);
}

.page-about .track-scale {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding-left: 1.4rem;
}

.page-about .track-scale::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.42em;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(232, 181, 74, 0.16);
}

.page-about .track-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--gold);
}

.page-about .track-era {
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  color: var(--stone);
}

.page-about .track-body h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.15rem, 2.2vw, 1.5rem);
  line-height: 1.32;
  color: var(--cream);
}

.page-about .track-body p {
  margin: 0.7rem 0 0;
  max-width: 64ch;
  font-size: 0.97rem;
  line-height: 1.88;
  color: var(--text-soft);
}

.page-about .track-points {
  list-style: none;
  margin: 0.9rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.45rem;
}

.page-about .track-points li {
  position: relative;
  padding-left: 1.15rem;
  font-size: 0.9rem;
  line-height: 1.72;
  color: var(--text-soft);
}

.page-about .track-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--turf);
}

/* ---------- 第三段：编辑团队 ---------- */

.page-about .team-frame {
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 0;
}

.page-about .team-grid {
  display: grid;
  gap: 1rem;
  margin-top: clamp(1.25rem, 3vw, 1.75rem);
}

.page-about .team-cell {
  padding: clamp(1.2rem, 3vw, 1.6rem);
  border: 1px solid var(--hair-soft);
  border-radius: var(--radius-m);
  background: linear-gradient(165deg, rgba(20, 50, 42, 0.85), rgba(14, 31, 26, 0.55));
}

.page-about .team-cell--lead {
  border-color: rgba(78, 143, 107, 0.42);
  background: linear-gradient(165deg, rgba(47, 93, 74, 0.5), rgba(14, 31, 26, 0.62));
}

.page-about .team-cell .team-num {
  margin: 0;
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  line-height: 1;
}

.page-about .team-cell h3 {
  margin: 0.6rem 0 0;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--cream);
}

.page-about .team-cell p {
  margin: 0.6rem 0 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--text-soft);
}

.page-about .standard-panel {
  margin-top: clamp(1.75rem, 4vw, 2.5rem);
  padding: clamp(1.4rem, 4vw, 2.25rem);
  border: 1px solid var(--hair);
  border-radius: var(--radius-l);
  background: rgba(8, 17, 14, 0.6);
}

.page-about .standard-panel > h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.15rem, 2.2vw, 1.45rem);
  color: var(--cream);
}

.page-about .standard-list {
  list-style: none;
  margin: 1.25rem 0 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-about .standard-list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.9rem;
  padding-top: 1rem;
  border-top: 1px solid var(--hair-soft);
}

.page-about .standard-num {
  font-size: 1.05rem;
  color: var(--turf);
}

.page-about .standard-list h4 {
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--cream);
}

.page-about .standard-list p {
  margin: 0.4rem 0 0;
  font-size: 0.88rem;
  line-height: 1.76;
  color: var(--text-soft);
}

.page-about .standard-list a {
  color: var(--gold);
  text-decoration-color: rgba(232, 181, 74, 0.4);
  text-underline-offset: 3px;
}

.page-about .standard-note {
  margin: 1.4rem 0 0;
  padding-top: 1.1rem;
  border-top: 1px solid var(--hair-soft);
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--text-soft);
}

.page-about .standard-note a {
  color: var(--gold);
  text-underline-offset: 3px;
}

/* ---------- 斜切色块 ---------- */

.page-about .slab {
  height: clamp(20px, 3.5vw, 40px);
  margin: clamp(1rem, 3vw, 1.75rem) var(--gutter);
  background: linear-gradient(90deg, var(--moss), var(--gold));
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
  opacity: 0.42;
}

/* ---------- 第四段：合作生态 ---------- */

.page-about .partners-grid {
  display: grid;
  gap: clamp(1.75rem, 5vw, 3rem);
}

.page-about .partners-body p {
  margin: 1.05rem 0 0;
  max-width: 60ch;
  color: var(--text-soft);
  line-height: 1.88;
}

.page-about .partner-cards {
  display: grid;
  gap: 0.9rem;
  margin-top: 1.5rem;
}

.page-about .partner-card {
  padding: clamp(1.1rem, 3vw, 1.5rem);
  border: 1px solid var(--hair-soft);
  border-left: 3px solid var(--brick);
  border-radius: var(--radius-s);
  background: rgba(20, 50, 42, 0.5);
  transition: border-color 0.24s var(--ease), transform 0.24s var(--ease), background 0.24s var(--ease);
}

.page-about .partner-card:hover,
.page-about .partner-card:focus-within {
  border-left-color: var(--gold);
  background: rgba(20, 50, 42, 0.84);
  transform: translateY(-3px);
}

.page-about .partner-card h3 {
  margin: 0;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1rem;
  color: var(--cream);
}

.page-about .partner-card p {
  margin: 0.55rem 0 0;
  font-size: 0.88rem;
  line-height: 1.78;
  color: var(--text-soft);
}

.page-about .partners-foot {
  margin: 1.4rem 0 0;
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--stone);
}

.page-about .partners-frame {
  margin: 0;
  aspect-ratio: 3 / 2;
}

/* ---------- 第五段：荣誉与规模（米白反转） ---------- */

.page-about .honors-panel {
  position: relative;
  overflow: hidden;
  padding: clamp(1.75rem, 5vw, 3.5rem);
  border-radius: var(--radius-l);
  background: var(--cream);
  color: var(--night);
}

.page-about .honors-panel::after {
  content: "";
  position: absolute;
  right: -8%;
  bottom: -32%;
  width: min(52%, 380px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232, 181, 74, 0.34), rgba(232, 181, 74, 0) 70%);
  pointer-events: none;
}

.page-about .honors-panel > .eyebrow {
  color: var(--brick);
}

.page-about .honors-panel h2 {
  color: var(--night);
}

.page-about .honors-lede {
  margin: 1rem 0 0;
  max-width: 56ch;
  line-height: 1.85;
  color: rgba(8, 17, 14, 0.72);
}

.page-about .honor-stats {
  position: relative;
  z-index: 1;
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 0;
  display: grid;
  gap: 1.25rem;
}

.page-about .honor-stat {
  display: flex;
  flex-direction: column-reverse;
  gap: 0.5rem;
  padding-top: 1rem;
  border-top: 2px solid rgba(8, 17, 14, 0.14);
}

.page-about .honor-stat dd {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.5rem, 3.4vw, 2.3rem);
  line-height: 1.1;
  color: var(--night);
}

.page-about .honor-stat dt {
  font-size: 0.82rem;
  line-height: 1.65;
  color: rgba(8, 17, 14, 0.66);
}

.page-about .honors-foot {
  position: relative;
  z-index: 1;
  margin: 1.75rem 0 0;
  max-width: 60ch;
  font-size: 0.9rem;
  line-height: 1.82;
  color: rgba(8, 17, 14, 0.76);
}

.page-about .honors-foot a {
  color: var(--brick);
  text-underline-offset: 3px;
}

/* ---------- 收尾 ---------- */

.page-about .about-next {
  padding-bottom: clamp(3rem, 8vw, 5.5rem);
}

.page-about .next-copy p {
  margin: 1rem 0 0;
  max-width: 58ch;
  color: var(--text-soft);
  line-height: 1.88;
}

.page-about .next-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

/* ---------- 响应式 ---------- */

@media (min-width: 620px) {
  .page-about .partner-cards {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 760px) {
  .page-about .team-grid {
    grid-template-columns: 1.45fr 1fr 1fr;
  }

  .page-about .honor-stats {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
  }
}

@media (min-width: 780px) {
  .page-about .toc-list {
    grid-template-columns: repeat(5, 1fr);
    gap: 0.4rem;
  }
}

@media (min-width: 820px) {
  .page-about .track {
    border-left: 1px solid var(--hair);
  }

  .page-about .track-item {
    grid-template-columns: var(--about-scale-w) 1fr;
    gap: 2.5rem;
    padding: clamp(1.8rem, 4vw, 2.6rem) 0;
  }

  .page-about .track-scale {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.2rem;
    padding-left: 1.5rem;
  }

  .page-about .track-scale::before {
    left: -5px;
    top: 0.42em;
  }

  .page-about .standard-list {
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem 2rem;
  }
}

@media (min-width: 900px) {
  .page-about .hero-grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.75fr);
    align-items: end;
    gap: clamp(2rem, 5vw, 4rem);
  }
}

@media (min-width: 960px) {
  .page-about .origin-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
    gap: clamp(2.5rem, 6vw, 4.5rem);
  }

  .page-about .partners-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
    gap: clamp(2.5rem, 6vw, 4rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .toc-list a,
  .page-about .partner-card {
    transition: none;
  }

  .page-about .partner-card:hover,
  .page-about .partner-card:focus-within {
    transform: none;
  }
}
<<<END>>>