.page-about {
  background: var(--ink);
  color: var(--paper);
  font-family: var(--f-body);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 22px 0 74px;
  background: var(--ink-2);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 38px), 0 100%);
}

.page-about .about-hero-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  opacity: 0.32;
  filter: saturate(0.62) contrast(1.15);
  z-index: 0;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(155deg, rgba(11, 33, 27, 0.94) 4%, rgba(16, 49, 40, 0.66) 48%, rgba(5, 16, 12, 0.95) 100%);
}

.page-about .about-hero-inner {
  position: relative;
  z-index: 2;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 26px;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-about .breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.18s ease;
}

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

.page-about .about-eyebrow {
  margin: 0 0 14px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-about h1 {
  margin: 0 0 20px;
  max-width: 15ch;
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(31px, 8.4vw, 66px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-about .about-lede {
  max-width: 56ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(245, 241, 230, 0.86);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  max-width: 540px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-stats li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 16px;
  background: var(--ink-2);
}

.page-about .about-stat-num {
  font-family: var(--f-mono);
  font-variant-numeric: tabular-nums;
  font-size: 25px;
  font-weight: 700;
  line-height: 1;
  color: var(--lime);
}

.page-about .about-stat-label {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* ---------- 画布与外轨 ---------- */
.page-about .about-canvas {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 50px var(--gutter) 78px;
}

.page-about .about-canvas::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 2px;
  background: var(--line);
  display: none;
}

.page-about .rail-label {
  margin: 0 0 16px;
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--lime-dim);
}

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

.page-about .tl-node {
  position: relative;
  padding: 0 0 22px 24px;
  border-left: 1px solid var(--line);
}

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

.page-about .tl-node::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 4px;
  width: 9px;
  height: 9px;
  box-sizing: content-box;
  border: 2px solid var(--lime-dim);
  border-radius: 50%;
  background: var(--ink);
  transition: background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.page-about .tl-node--done::before {
  background: var(--lime);
  border-color: var(--lime);
  box-shadow: 0 0 0 4px rgba(200, 247, 81, 0.12);
}

.page-about .tl-year {
  display: block;
  font-family: var(--f-mono);
  font-variant-numeric: tabular-nums;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--paper);
}

.page-about .tl-title {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  color: var(--muted);
}

.page-about .tl-detail {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.24s ease;
}

.page-about .tl-detail > span {
  overflow: hidden;
  font-size: 12px;
  line-height: 1.65;
  color: var(--lime-dim);
}

.page-about .tl-node:hover .tl-detail,
.page-about .tl-node:focus-within .tl-detail {
  grid-template-rows: 1fr;
}

.page-about .tl-node:hover::before {
  border-color: var(--lime);
}

@media (hover: none) {
  .page-about .tl-detail {
    grid-template-rows: 1fr;
  }
  .page-about .tl-detail > span {
    padding-top: 4px;
  }
}

/* ---------- 章节 ---------- */
.page-about .about-flow {
  display: grid;
  min-width: 0;
}

.page-about .about-sec {
  padding: 38px 0 42px;
  border-top: 1px solid var(--line);
}

.page-about .about-sec:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-about .sec-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 18px;
}

.page-about .sec-head .index-num {
  flex: none;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--lime);
}

.page-about .sec-head h2 {
  margin: 0;
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(21px, 5.4vw, 34px);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-sec p {
  max-width: 62ch;
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(245, 241, 230, 0.84);
}

.page-about .about-inline-link {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid var(--lime-dim);
  padding-bottom: 1px;
}

.page-about .about-inline-link:hover {
  border-bottom-color: var(--lime);
}

.page-about .about-pull {
  margin: 22px 0;
  padding: 15px 16px 15px 18px;
  border-left: 3px solid var(--lime);
  background: var(--ink-2);
}

.page-about .about-pull p {
  margin: 0;
  max-width: 52ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper);
}

/* ---------- 按钮 ---------- */
.page-about .about-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-about .about-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-decoration: none;
  color: var(--ink);
  background: var(--lime);
  border: 1px solid var(--lime);
  clip-path: polygon(0 0, 100% 0, calc(100% - 11px) 100%, 0 100%);
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.page-about .about-link:hover {
  background: var(--lime-dim);
  border-color: var(--lime-dim);
}

.page-about .about-link--ghost {
  background: transparent;
  color: var(--lime);
  border-color: var(--line);
}

.page-about .about-link--ghost:hover {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink);
}

/* ---------- 数据章节 ---------- */
.page-about .data-split {
  display: grid;
  gap: 20px;
  margin: 6px 0 24px;
}

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

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

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

.page-about .about-figure figcaption {
  padding: 10px 12px;
  font-size: 11px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

.page-about .about-figure--crowd img {
  aspect-ratio: 3 / 2;
}

.page-about .flow-wrap {
  margin: 24px 0;
  padding: 16px 14px 12px;
  border: 1px solid var(--line);
  background: var(--ink-2);
  overflow-x: auto;
}

.page-about .flow {
  display: block;
  width: 100%;
  min-width: 460px;
  height: auto;
}

.page-about .flow .f-box {
  fill: var(--ink);
  stroke: var(--line);
  stroke-width: 1.4;
}

.page-about .flow .f-box--hl {
  fill: var(--ink-2);
  stroke: var(--lime-dim);
}

.page-about .flow .f-box--out {
  fill: rgba(200, 247, 81, 0.1);
  stroke: var(--lime);
}

.page-about .flow .f-line {
  fill: none;
  stroke: var(--lime-dim);
  stroke-width: 1.4;
}

.page-about .flow .f-arrow {
  fill: var(--lime-dim);
}

.page-about .flow .f-label {
  fill: var(--paper);
  font-family: var(--f-body);
  font-size: 14px;
  font-weight: 600;
}

.page-about .flow .f-sub {
  fill: var(--muted);
  font-family: var(--f-body);
  font-size: 11px;
}

.page-about .flow-note {
  margin: 10px 0 0;
  min-width: 460px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 栏目线 ---------- */
.page-about .line-list {
  margin: 24px 0 18px;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-about .line-item {
  display: grid;
  gap: 8px;
  padding: 18px 0 16px;
  border-bottom: 1px solid var(--line);
  transition: background 0.18s ease;
}

.page-about .line-name {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .line-freq {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  padding: 3px 8px;
  color: var(--lime);
  border: 1px solid var(--line);
  white-space: nowrap;
}

.page-about .line-item .line-desc {
  margin: 0;
  max-width: 58ch;
  font-size: 14px;
  line-height: 1.72;
  color: rgba(245, 241, 230, 0.76);
}

.page-about .line-link {
  justify-self: start;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.18s ease, color 0.18s ease;
}

.page-about .line-link:hover {
  border-bottom-color: var(--lime);
}

/* ---------- 团队 ---------- */
.page-about .team-block {
  margin-top: 22px;
}

.page-about .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.page-about .filter-btn {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  padding: 8px 14px;
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--line);
  cursor: pointer;
  transition: color 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.page-about .filter-btn:hover {
  color: var(--lime);
  border-color: var(--lime-dim);
}

.page-about .filter-btn[aria-pressed="true"] {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink);
}

.page-about .filter-status {
  margin-bottom: 12px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

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

.page-about .team-head,
.page-about .team-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 4px 16px;
  border-bottom: 1px solid var(--line);
}

.page-about .team-head {
  padding: 9px 0;
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-about .team-head span:last-child {
  text-align: right;
}

.page-about .team-row {
  padding: 16px 0;
  transition: box-shadow 0.18s ease;
}

.page-about .team-row:hover {
  box-shadow: inset 2px 0 0 0 var(--lime);
}

.page-about .team-role {
  font-size: 15px;
  font-weight: 600;
  color: var(--paper);
}

.page-about .team-count {
  justify-self: end;
  font-family: var(--f-mono);
  font-variant-numeric: tabular-nums;
  font-size: 21px;
  font-weight: 700;
  line-height: 1;
  color: var(--lime);
}

.page-about .team-note {
  grid-column: 1 / -1;
  font-size: 13px;
  line-height: 1.68;
  color: rgba(245, 241, 230, 0.7);
}

/* ---------- 合作 ---------- */
.page-about .partner-grid {
  display: grid;
  gap: 20px;
  margin-top: 20px;
}

.page-about .partner-copy p {
  margin-bottom: 14px;
}

.page-about .partner-copy .about-link {
  margin-top: 4px;
}

/* ---------- 本地与联系 ---------- */
.page-about .facts-panel {
  display: grid;
  gap: 0;
  margin: 22px 0 18px;
  padding: 4px 16px;
  border: 1px solid var(--line);
  background: var(--ink-2);
}

.page-about .fact-row {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 13px 0;
  border-bottom: 1px dashed var(--line);
}

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

.page-about .fact-key {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--lime-dim);
}

.page-about .fact-val {
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper);
  word-break: break-word;
}

.page-about .fact-val.num {
  font-family: var(--f-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  position: relative;
  margin-top: 34px;
  padding: 24px 20px;
  background: var(--paper);
  color: var(--ink);
  box-shadow: 6px 6px 0 0 var(--line);
}

.page-about .cta-title {
  margin: 0 0 8px;
  font-family: var(--f-display);
  font-weight: 800;
  font-size: 21px;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .cta-sub {
  margin: 0;
  max-width: 52ch;
  font-size: 13px;
  line-height: 1.72;
  color: rgba(11, 33, 27, 0.78);
}

.page-about .about-cta .cta-ghost {
  background: transparent;
  color: var(--ink);
  border-color: rgba(11, 33, 27, 0.35);
}

.page-about .about-cta .cta-ghost:hover {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

/* ---------- 平板 ---------- */
@media (min-width: 620px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-hero {
    padding: 26px 0 84px;
  }

  .page-about .about-sec p {
    font-size: 16px;
  }

  .page-about .data-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
    align-items: start;
    gap: 26px;
  }

  .page-about .line-item {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 6px 28px;
    align-items: start;
  }

  .page-about .line-item .line-desc {
    grid-column: 2;
  }

  .page-about .line-link {
    grid-column: 2;
  }

  .page-about .line-name {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .page-about .team-head,
  .page-about .team-row {
    grid-template-columns: 190px 72px minmax(0, 1fr);
    align-items: baseline;
  }

  .page-about .team-note {
    grid-column: 3;
  }

  .page-about .team-count {
    justify-self: start;
  }

  .page-about .team-head span:last-child {
    display: none;
  }

  .page-about .partner-grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1fr);
    align-items: center;
    gap: 30px;
  }

  .page-about .fact-row {
    grid-template-columns: 92px minmax(0, 1fr);
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 30px 0 96px;
  }

  .page-about .about-canvas {
    grid-template-columns: 186px minmax(0, 1fr);
    gap: 56px;
    padding-top: 68px;
    padding-bottom: 92px;
  }

  .page-about .about-canvas::after {
    display: block;
  }

  .page-about .about-rail {
    position: sticky;
    top: 92px;
    align-self: start;
  }

  .page-about .about-timeline {
    padding-bottom: 4px;
  }

  .page-about .tl-node {
    padding-bottom: 30px;
  }

  .page-about .about-sec {
    padding: 46px 0 52px;
  }

  .page-about .about-lede {
    font-size: 16px;
  }

  .page-about .line-item:hover {
    background: rgba(29, 75, 60, 0.28);
  }

  .page-about .about-cta {
    padding: 30px 28px;
    box-shadow: 8px 8px 0 0 var(--line);
  }
}

@media (min-width: 1180px) {
  .page-about .about-canvas {
    grid-template-columns: 210px minmax(0, 1fr);
    gap: 68px;
  }

  .page-about .about-sec {
    padding: 52px 0 58px;
  }
}
<<<END>>>