.page-about {
  --about-gap: clamp(20px, 4vw, 44px);
  --about-line: rgba(157, 184, 169, 0.22);
  display: block;
  background: var(--ink);
  color: var(--mist);
  padding-bottom: clamp(32px, 6vw, 72px);
  overflow-x: hidden;
}

.page-about .about-crumbs {
  padding-top: clamp(14px, 2.4vw, 22px);
  font-size: 0.8125rem;
  color: var(--sage);
}

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

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

.page-about .crumbs [aria-current="page"] {
  color: var(--mist);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 5vw, 60px) 0 clamp(30px, 6vw, 66px);
  background:
    radial-gradient(115% 95% at 88% -5%, rgba(31, 122, 77, 0.55) 0%, rgba(7, 28, 21, 0) 62%),
    linear-gradient(165deg, #0C2A20 0%, #071C15 64%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -12%;
  bottom: -70px;
  width: min(560px, 72%);
  height: 220px;
  background: linear-gradient(90deg, rgba(200, 240, 75, 0) 0%, rgba(200, 240, 75, 0.16) 100%);
  transform: skewY(-9deg);
  pointer-events: none;
}

.page-about .about-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(24px, 5vw, 48px);
  align-items: center;
}

.page-about .about-hero h1 {
  margin: 10px 0 0;
  font-size: clamp(2.1rem, 7vw, 4.4rem);
  line-height: 1.04;
  font-weight: 800;
  letter-spacing: -0.02em;
  transform: skewX(-2deg);
  transform-origin: left bottom;
}

.page-about .about-lede {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: clamp(0.9375rem, 2.4vw, 1.0625rem);
  line-height: 1.78;
  color: var(--sage);
}

.page-about .about-hero-facts {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
  max-width: 30em;
}

.page-about .about-hero-facts .fact {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--about-line);
}

.page-about .about-hero-facts .fact-num {
  font-size: clamp(1.35rem, 4vw, 1.75rem);
  font-weight: 700;
  line-height: 1;
  color: var(--lime);
}

.page-about .about-hero-facts .fact-label {
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--sage);
}

.page-about .about-hero-actions {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-hero-figure {
  margin: 0;
  position: relative;
}

.page-about .about-hero-media {
  position: relative;
  width: 100%;
  aspect-ratio: 14 / 9;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--line-strong);
  background: linear-gradient(140deg, var(--ink-3), var(--ink));
  clip-path: polygon(0 0, 100% 0, 100% 84%, 85% 100%, 0 100%);
}

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

.page-about .about-hero-figure .hand {
  display: block;
  margin-top: 10px;
  text-align: right;
}

/* ---------- 通用区块 ---------- */
.page-about .about-section {
  padding: clamp(34px, 7vw, 80px) 0;
  border-top: 1px solid var(--about-line);
}

.page-about .about-section:first-of-type {
  border-top: 0;
}

.page-about .about-body.prose {
  max-width: none;
}

.page-about .about-body > .eyebrow {
  margin: 0 0 8px;
}

.page-about .about-body p,
.page-about .about-lead {
  margin: 14px 0 0;
  font-size: clamp(0.9375rem, 2.3vw, 1.0625rem);
  line-height: 1.78;
  color: var(--sage);
}

.page-about .about-body .section-title {
  margin: 0;
}

.page-about .about-split {
  display: grid;
  gap: var(--about-gap);
  align-items: start;
}

/* ---------- 起点 + 便签 ---------- */
.page-about .about-note {
  padding: clamp(18px, 3.4vw, 26px);
  border-radius: var(--radius);
  border: 1px solid var(--line-strong);
}

.page-about .about-note-title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-about .about-note-list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-note-list li {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--mist);
  padding-left: 0;
}

.page-about .about-note-list .num {
  color: var(--lime);
  font-weight: 700;
}

.page-about .about-note .hand {
  display: block;
  margin-top: 16px;
}

/* ---------- 方法清单 ---------- */
.page-about .about-section--mission .section-sub {
  margin: 12px 0 22px;
  max-width: 40em;
  color: var(--sage);
}

.page-about .about-method-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--about-line);
}

.page-about .about-method-row {
  display: grid;
  gap: 8px 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--about-line);
  transition: background var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.page-about .about-method-row:hover,
.page-about .about-method-row:focus-within {
  background: linear-gradient(90deg, rgba(31, 122, 77, 0.26), rgba(31, 122, 77, 0));
  padding-left: 12px;
}

.page-about .method-idx {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--lime);
  padding-top: 4px;
}

.page-about .method-title {
  margin: 0;
  font-size: clamp(1.0625rem, 2.6vw, 1.1875rem);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--mist);
}

.page-about .method-note {
  margin: 8px 0 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--sage);
}

.page-about .method-tags {
  margin: 12px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ---------- 时间线 ---------- */
.page-about .about-tl {
  position: relative;
  margin-top: 24px;
  padding-left: 22px;
  display: grid;
  gap: 14px;
}

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--lime) 0%, rgba(200, 240, 75, 0.08) 100%);
}

.page-about .tl-node {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(18, 53, 40, 0.92), rgba(12, 42, 32, 0.92));
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .tl-node::before {
  content: "";
  position: absolute;
  left: -22px;
  top: 22px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--line-strong);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .tl-node[open]::before {
  background: var(--lime);
  border-color: var(--lime);
}

.page-about .tl-node:hover,
.page-about .tl-node:focus-within {
  border-color: var(--line-strong);
  transform: translateY(-2px);
}

.page-about .tl-node > summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}

.page-about .tl-node > summary::-webkit-details-marker {
  display: none;
}

.page-about .tl-node > summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
  border-radius: var(--radius);
}

.page-about .tl-stamp {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 4px;
  background: var(--lime);
  color: var(--ink);
  font-weight: 700;
  font-size: 0.875rem;
  transform: rotate(-3deg);
  transition: transform var(--dur) var(--ease);
}

.page-about .tl-node[open] .tl-stamp {
  transform: rotate(0deg);
}

.page-about .tl-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--mist);
  line-height: 1.45;
}

.page-about .tl-meta {
  margin-left: auto;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--sage);
}

.page-about .tl-caret {
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--sage);
  border-bottom: 2px solid var(--sage);
  transform: rotate(45deg);
  transition: transform var(--dur) var(--ease);
}

.page-about .tl-node[open] .tl-caret {
  transform: rotate(-135deg);
}

.page-about .tl-body {
  padding: 0 16px 16px;
}

.page-about .tl-body ul {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 6px;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--sage);
}

.page-about .tl-body li::marker {
  color: var(--pitch);
}

.page-about .about-tl-foot {
  margin: 18px 0 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--sage);
}

.page-about .about-tl-foot .num {
  color: var(--lime);
  font-weight: 700;
}

.page-about .about-tl-foot a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 240, 75, 0.5);
}

.page-about .about-tl-foot a:hover,
.page-about .about-tl-foot a:focus-visible {
  border-bottom-color: var(--lime);
}

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

.page-about .about-archive-media {
  border-radius: var(--radius);
  border: 1px solid var(--line-strong);
  overflow: hidden;
}

.page-about .about-tl-figure .hand {
  display: block;
  margin-top: 10px;
  text-align: right;
}

/* ---------- 团队仪表板 ---------- */
.page-about .about-section--team .section-sub {
  margin: 12px 0 22px;
  max-width: 42em;
  color: var(--sage);
}

.page-about .about-team {
  display: grid;
  gap: 14px;
}

.page-about .team-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 18px 20px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--pitch);
  border-radius: var(--radius);
  background: linear-gradient(170deg, rgba(18, 53, 40, 0.86), rgba(7, 28, 21, 0.94));
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .team-card:hover,
.page-about .team-card:focus-within {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  border-top-color: var(--lime);
}

.page-about .team-idx {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--sage);
}

.page-about .team-name {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--mist);
}

.page-about .team-role {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.72;
  color: var(--sage);
}

.page-about .team-tags {
  margin: auto 0 0;
  padding-top: 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ---------- 合作生态 ---------- */
.page-about .about-section--eco .section-title {
  margin: 0;
}

.page-about .eco-stats {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .eco-stats li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--about-line);
}

.page-about .eco-num {
  font-size: clamp(1.2rem, 3.4vw, 1.5rem);
  font-weight: 700;
  color: var(--lime);
  line-height: 1;
}

.page-about .eco-label {
  font-size: 0.875rem;
  color: var(--sage);
  line-height: 1.5;
}

.page-about .eco-tags {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .eco-tag {
  display: inline-block;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line-strong);
  font-size: 0.8125rem;
  color: var(--mist);
  background: rgba(31, 122, 77, 0.18);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .eco-tag:hover {
  background: rgba(31, 122, 77, 0.38);
  border-color: var(--pitch-lift);
}

.page-about .eco-tag--lime {
  border-color: rgba(200, 240, 75, 0.45);
  background: rgba(200, 240, 75, 0.1);
  color: var(--lime);
}

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

.page-about .about-eco-media {
  position: relative;
  width: 100%;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--line-strong);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 12% 100%, 0 88%);
  background: linear-gradient(150deg, var(--ink-3), var(--ink));
}

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

.page-about .eco-figure .hand {
  display: block;
  margin-top: 10px;
  text-align: right;
}

/* ---------- 联系 ---------- */
.page-about .about-cta {
  display: grid;
  gap: clamp(20px, 4vw, 34px);
  padding: clamp(20px, 4vw, 38px);
  border: 1px solid rgba(200, 240, 75, 0.42);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 120% at 0% 0%, rgba(31, 122, 77, 0.65) 0%, rgba(7, 28, 21, 0) 60%),
    linear-gradient(150deg, rgba(18, 53, 40, 0.98), rgba(7, 28, 21, 0.98));
}

.page-about .about-cta-copy .eyebrow {
  margin: 0 0 8px;
}

.page-about .about-cta-copy .section-title {
  margin: 0;
}

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

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

.page-about .about-cta-list li {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--about-line);
}

.page-about .cta-idx {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--lime);
  letter-spacing: 0.08em;
}

.page-about .about-cta-list h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  color: var(--mist);
}

.page-about .about-cta-list p {
  margin: 4px 0 0;
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--sage);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-method-row {
    grid-template-columns: 64px minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-team {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .page-about .about-cta-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .page-about .about-cta-list li {
    grid-template-columns: 1fr;
    gap: 6px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    gap: clamp(32px, 5vw, 60px);
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }

  .page-about .about-split--timeline {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: start;
  }

  .page-about .about-split--eco {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
  }

  .page-about .about-note {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }

  .page-about .about-cta {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-about .about-team {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
  }

  .page-about .team-card:nth-child(2) {
    margin-top: 26px;
  }

  .page-about .team-card:nth-child(4) {
    margin-top: 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .tl-node,
  .page-about .team-card,
  .page-about .about-method-row {
    transition: none;
  }

  .page-about .tl-node:hover,
  .page-about .team-card:hover {
    transform: none;
  }
}
<<<END>>>