.page-about {
  --about-line: rgba(154, 166, 161, .28);
  --about-line-soft: rgba(154, 166, 161, .16);
  --about-ink: #07211A;
  --about-deepblue: #101C2B;
  background: var(--green-deep);
  color: var(--paper);
  overflow-x: clip;
}

/* ---------- 通用页面元素 ---------- */

.page-about .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-about .eyebrow--amber { color: var(--amber); }
.page-about .eyebrow--cyan { color: var(--cyan); }

.page-about .about-h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(26px, 3.4vw, 44px);
  line-height: 1.14;
  letter-spacing: -.02em;
  font-weight: 700;
  color: var(--white);
}

.page-about .about-lede {
  margin: 16px 0 0;
  max-width: 66ch;
  font-size: 16px;
  line-height: 1.72;
  color: var(--paper);
  opacity: .84;
}

.page-about .about-sec {
  padding: clamp(56px, 8vw, 104px) 0;
  border-bottom: 1px solid var(--about-line-soft);
}

.page-about .about-sec--ink { background: var(--about-ink); }
.page-about .about-sec--night { background: var(--about-deepblue); }
.page-about .about-sec--paper { background: var(--paper); color: var(--green-night); }

.page-about .about-sec--paper .about-h2 { color: var(--green-night); }
.page-about .about-sec--paper .about-lede { color: var(--green-night); opacity: .82; }
.page-about .about-sec--paper .eyebrow { color: var(--green-deep); }

.page-about .sec-head { max-width: 820px; }

.page-about .about-sec--ink .about-h2,
.page-about .about-sec--night .about-h2 { color: var(--white); }

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding: clamp(40px, 6vw, 80px) 0 clamp(44px, 6vw, 76px);
  border-bottom: 1px solid var(--about-line-soft);
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(200, 240, 74, .055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(200, 240, 74, .055) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .95), transparent 76%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .95), transparent 76%);
}

.page-about .about-hero .container { position: relative; z-index: 1; }

.page-about .breadcrumb {
  margin-bottom: clamp(20px, 3vw, 34px);
  font-size: 13px;
  color: var(--gray-cool);
}

.page-about .breadcrumb ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.page-about .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(154, 166, 161, .55);
}

.page-about .breadcrumb a {
  color: var(--gray-cool);
  text-decoration: none;
}

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible { color: var(--lime); }

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 48px);
  align-items: end;
}

.page-about .about-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(29px, 4.6vw, 56px);
  line-height: 1.1;
  letter-spacing: -.022em;
  font-weight: 700;
  color: var(--white);
}

.page-about .about-hero__lede {
  margin: 20px 0 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--paper);
  opacity: .86;
}

.page-about .about-hero__side {
  padding: 22px 22px 24px;
  background: rgba(7, 33, 26, .72);
  border: 1px solid var(--about-line);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}

.page-about .side-card__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-about .side-card__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .side-card__list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px dashed rgba(154, 166, 161, .22);
}

.page-about .side-card__list li:last-child { border-bottom: 0; }

.page-about .side-card__list span {
  font-size: 13px;
  color: var(--gray-cool);
}

.page-about .side-card__list b {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--lime);
  text-align: right;
}

.page-about .hero-facts {
  list-style: none;
  margin: clamp(32px, 4vw, 48px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
}

.page-about .hero-facts li {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 18px 20px;
  background: var(--green-deep);
}

.page-about .hero-facts b {
  font-family: var(--font-mono);
  font-size: clamp(22px, 2.6vw, 30px);
  line-height: 1;
  letter-spacing: -.03em;
  font-weight: 600;
  color: var(--lime);
}

.page-about .hero-facts span {
  font-size: 13px;
  line-height: 1.5;
  color: var(--gray-cool);
}

/* ---------- 纵向时间轴 ---------- */

.page-about .timeline {
  position: relative;
  list-style: none;
  margin: clamp(32px, 4vw, 52px) 0 0;
  padding: 0;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, rgba(200, 240, 74, .6), rgba(154, 166, 161, .16));
}

.page-about .tl-item {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  padding: 26px 0 28px 28px;
  border-bottom: 1px solid var(--about-line-soft);
}

.page-about .tl-item:last-child { border-bottom: 0; }

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 34px;
  width: 9px;
  height: 9px;
  background: var(--green-deep);
  border: 1px solid var(--lime);
}

.page-about .tl-year {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-about .tl-year__num {
  font-family: var(--font-mono);
  font-size: clamp(22px, 2.6vw, 32px);
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--gray-cool);
  transition: color .24s ease;
}

.page-about .tl-year__tag {
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--gray-cool);
}

.page-about .tl-body h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 2vw, 24px);
  line-height: 1.28;
  letter-spacing: -.01em;
  color: var(--white);
  font-weight: 600;
}

.page-about .tl-body p {
  margin: 10px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.72;
  color: var(--paper);
  opacity: .8;
}

.page-about .tl-points {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  opacity: .7;
  transition: opacity .24s ease;
}

.page-about .tl-points li {
  padding: 6px 12px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--paper);
  border: 1px solid rgba(200, 240, 74, .3);
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
}

.page-about .tl-item:hover .tl-year__num { color: var(--lime); }
.page-about .tl-item:hover .tl-points { opacity: 1; }

/* ---------- 团队 ---------- */

.page-about .team-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 52px);
  margin-top: clamp(32px, 4vw, 52px);
  align-items: start;
}

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

.page-about .team-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}

.page-about .team-figure figcaption,
.page-about .ver-figure figcaption,
.page-about .local-figure figcaption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--gray-cool);
}

.page-about .team-bars {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.page-about .team-bar {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
  gap: 8px 14px;
}

.page-about .team-bar__name {
  font-size: 15px;
  color: var(--paper);
}

.page-about .team-bar__num {
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--lime);
}

.page-about .team-bar__track {
  grid-column: 1 / -1;
  position: relative;
  height: 6px;
  background: rgba(242, 239, 230, .1);
  overflow: hidden;
}

.page-about .team-bar__track i {
  position: absolute;
  inset: 0 auto 0 0;
  display: block;
}

.page-about .team-bar__fill--a { width: 58%; background: var(--lime); }
.page-about .team-bar__fill--b { width: 24%; background: var(--cyan); }
.page-about .team-bar__fill--c { width: 18%; background: var(--amber); }

.page-about .team-notes {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--about-line);
}

.page-about .team-notes p {
  margin: 0 0 14px;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.72;
  color: var(--paper);
  opacity: .82;
}

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

/* ---------- 版本 ---------- */

.page-about .ver-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 52px);
  margin-top: clamp(32px, 4vw, 52px);
  align-items: start;
}

.page-about .spec-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .spec-list li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 15px 0;
  border-bottom: 1px dashed var(--about-line);
}

.page-about .spec-list__k {
  flex: 0 1 auto;
  font-size: 14px;
  line-height: 1.5;
  color: var(--gray-cool);
}

.page-about .spec-list__dots {
  flex: 1 1 24px;
  min-width: 18px;
  align-self: center;
  border-bottom: 1px dotted rgba(154, 166, 161, .38);
  transform: translateY(-3px);
}

.page-about .spec-list__v {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: -.01em;
  color: var(--lime);
  text-align: right;
}

.page-about .ver-note {
  margin: 24px 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--cyan);
  font-size: 15px;
  line-height: 1.72;
  color: var(--paper);
  opacity: .82;
}

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

.page-about .ver-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}

/* ---------- 归档 ---------- */

.page-about .archive__head { max-width: 820px; }

.page-about .archive__folds {
  margin-top: clamp(32px, 4vw, 48px);
  border-bottom: 1px solid var(--about-line);
}

.page-about .fold {
  border-top: 1px solid var(--about-line);
}

.page-about .fold summary {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 44px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: clamp(17px, 1.8vw, 20px);
  line-height: 1.4;
  letter-spacing: -.01em;
  color: var(--paper);
}

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

.page-about .fold summary::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--lime);
}

.page-about .fold[open] summary::after { content: "–"; }

.page-about .fold summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}

.page-about .fold__body {
  padding: 0 0 22px;
  max-width: 70ch;
}

.page-about .fold__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.74;
  color: var(--paper);
  opacity: .8;
}

/* ---------- 覆盖范围 ---------- */

.page-about .cover-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 52px);
  margin-top: clamp(32px, 4vw, 52px);
  align-items: center;
}

.page-about .cover-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: rgba(14, 59, 46, .18);
}

.page-about .cover-stats li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 18px 22px;
  background: var(--paper);
}

.page-about .cover-stats b {
  font-family: var(--font-mono);
  font-size: clamp(28px, 3.4vw, 40px);
  line-height: 1;
  letter-spacing: -.04em;
  font-weight: 600;
  color: var(--green-deep);
}

.page-about .cover-stats span {
  font-size: 14px;
  font-weight: 600;
  color: var(--green-night);
}

.page-about .cover-stats em {
  font-style: normal;
  font-size: 13px;
  line-height: 1.6;
  color: rgba(7, 33, 26, .66);
}

.page-about .cover-dots {
  position: relative;
  min-height: 200px;
  border: 1px solid rgba(14, 59, 46, .22);
  background-image: radial-gradient(circle, rgba(14, 59, 46, .5) 1.7px, transparent 1.7px);
  background-size: 14px 14px;
  -webkit-mask-image: radial-gradient(ellipse at 50% 50%, #000 30%, transparent 80%);
  mask-image: radial-gradient(ellipse at 50% 50%, #000 30%, transparent 80%);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}

/* ---------- 本地与收尾 ---------- */

.page-about .local-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}

.page-about .local-copy__body {
  margin: 18px 0 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.74;
  color: var(--paper);
  opacity: .8;
}

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

.page-about .local-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 7 / 4;
  object-fit: cover;
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}

.page-about .about-cta {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: clamp(40px, 5vw, 64px);
  padding-top: 28px;
  border-top: 1px solid var(--about-line);
}

.page-about .about-cta__text {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.4;
  letter-spacing: -.01em;
  color: var(--white);
}

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

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-about .hero-facts { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .page-about .cover-stats { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (min-width: 860px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  }

  .page-about .tl-item {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 28px;
    padding-left: 32px;
  }

  .page-about .timeline::before { left: 8px; }

  .page-about .tl-item::before { left: 4px; top: 30px; }

  .page-about .team-layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-about .ver-layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-about .cover-layout {
    grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
  }

  .page-about .local-layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

  .page-about .about-cta {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

@media (min-width: 1100px) {
  .page-about .about-hero__grid { gap: 64px; }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .tl-year__num,
  .page-about .tl-points { transition: none; }
}
<<<END>>>