.page-about {
  --about-line: rgba(29, 23, 18, 0.16);
  --about-line-soft: rgba(29, 23, 18, 0.08);
  background: var(--cream);
  color: var(--ink);
}

.page-about .breadcrumb {
  padding-top: 22px;
}

.page-about img {
  display: block;
  max-width: 100%;
  height: auto;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  display: grid;
  gap: 24px;
  padding-block: 16px 38px;
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(34px, 8.4vw, 70px);
  line-height: 1.02;
  letter-spacing: -0.012em;
  margin: 10px 0 16px;
  text-wrap: balance;
}

.page-about .about-lede {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-soft);
  max-width: 46ch;
}

.page-about .hero-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 26px;
  border-top: 2px solid var(--ink);
}

.page-about .hero-stat {
  padding: 12px 10px 0 0;
  border-right: 1px solid var(--about-line);
}

.page-about .hero-stat:last-child {
  border-right: 0;
  padding-right: 0;
}

.page-about .hero-stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(20px, 5.4vw, 30px);
  font-weight: 600;
  line-height: 1.05;
  color: var(--turf);
}

.page-about .hero-stat-label {
  display: block;
  margin-top: 6px;
  font-size: 11px;
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}

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

.page-about .hero-figure .figure-frame {
  background: var(--night);
}

/* ---------- 双栏叙事骨架 ---------- */
.page-about .about-body {
  display: grid;
  gap: 0;
  padding-block: 6px 12px;
}

.page-about .about-rail {
  display: none;
}

.page-about .rail-title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ember);
  margin: 0 0 14px;
}

.page-about .rail-list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 14px;
  border-left: 2px solid var(--ink);
}

.page-about .rail-list li + li {
  margin-top: 18px;
}

.page-about .rail-list a {
  display: block;
  position: relative;
  text-decoration: none;
  color: var(--ink);
}

.page-about .rail-list a::before {
  content: "";
  position: absolute;
  left: -11px;
  top: 7px;
  width: 7px;
  height: 2px;
  background: var(--ink);
}

.page-about .rail-key {
  display: block;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
}

.page-about .rail-key-ver {
  color: var(--turf);
}

.page-about .rail-txt {
  display: block;
  margin-top: 3px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--ink-soft);
}

.page-about .rail-list a:hover .rail-key,
.page-about .rail-list a:focus-visible .rail-key {
  color: var(--ember);
}

.page-about .about-section {
  padding-block: 32px 36px;
  border-bottom: 1px solid var(--about-line);
}

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

.page-about .about-h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(26px, 5.2vw, 42px);
  line-height: 1.08;
  letter-spacing: -0.006em;
  margin: 8px 0 14px;
  text-wrap: balance;
}

.page-about .about-p {
  margin: 0 0 14px;
  font-family: var(--font-body);
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink-soft);
  max-width: 62ch;
}

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

.page-about .about-p a {
  color: var(--turf);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-about .about-p a:hover {
  color: var(--ember);
}

/* ---------- 沿革 ---------- */
.page-about .timeline {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
}

.page-about .tl-item {
  display: grid;
  grid-template-columns: 66px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--about-line);
}

.page-about .tl-item:first-child {
  border-top: 2px solid var(--ink);
}

.page-about .tl-year {
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.1;
  color: var(--ember);
}

.page-about .tl-ver {
  display: inline-block;
  margin-top: 7px;
  padding: 2px 5px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--night);
  background: var(--whistle);
}

.page-about .tl-title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 600;
  line-height: 1.26;
}

.page-about .tl-body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* ---------- 团队 ---------- */
.page-about .team-grid {
  list-style: none;
  margin: 20px 0 18px;
  padding: 0;
  display: grid;
  gap: 10px;
  grid-template-columns: 1fr;
}

.page-about .team-card {
  background: var(--paper);
  border: 1px solid var(--about-line);
  border-top: 4px solid var(--turf);
  padding: 16px 14px 18px;
}

.page-about .team-card:nth-child(2) {
  border-top-color: var(--ember);
}

.page-about .team-card:nth-child(3) {
  border-top-color: var(--data);
}

.page-about .team-num {
  display: block;
  margin: 12px 0 8px;
  font-family: var(--font-mono);
  font-size: clamp(30px, 7vw, 40px);
  font-weight: 600;
  line-height: 1;
  color: var(--night);
}

.page-about .team-card p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--ink-soft);
}

/* ---------- 覆盖 ---------- */
.page-about .cover-grid {
  list-style: none;
  margin: 20px 0 16px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
}

.page-about .cover-tile {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 4px;
  min-height: 84px;
  padding: 20px 12px 14px;
  background: var(--night);
  color: var(--paper);
  transition: background-color 200ms var(--ease), color 200ms var(--ease);
}

.page-about .cover-tile:nth-child(3n) {
  background: var(--turf);
}

.page-about .cover-tile:hover {
  background: var(--data);
  color: var(--night);
}

.page-about .cover-code {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  opacity: 0.72;
}

.page-about .cover-name {
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: 0.02em;
}

.page-about .about-figure {
  margin: 22px 0 0;
}

.page-about .about-figure .figure-frame {
  background: var(--night);
}

/* ---------- 资料库 ---------- */
.page-about .lib-stats {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  margin: 20px 0 0;
}

.page-about .data-card {
  background: var(--paper);
  border: 1px solid var(--about-line);
  padding: 14px 14px 16px;
}

.page-about .data-card-value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(24px, 5vw, 32px);
  font-weight: 600;
  line-height: 1.1;
  color: var(--turf);
}

.page-about .data-card-label {
  display: block;
  margin-top: 5px;
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--ink);
}

.page-about .data-card-note {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--ink-soft);
}

/* ---------- 荣誉 ---------- */
.page-about .honor-list {
  list-style: none;
  margin: 18px 0 16px;
  padding: 0;
  border-top: 2px solid var(--ink);
}

.page-about .honor-list li {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  padding: 15px 0;
  border-bottom: 1px solid var(--about-line);
  font-size: 15px;
  line-height: 1.72;
  color: var(--ink-soft);
}

.page-about .honor-idx {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ember);
  padding-top: 4px;
}

/* ---------- 结尾行动区 ---------- */
.page-about .about-cta {
  background: var(--night);
  color: var(--paper);
  padding: 30px 22px;
  margin-block: 6px 60px;
  display: grid;
  gap: 20px;
}

.page-about .cta-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(24px, 4.6vw, 34px);
  line-height: 1.12;
  margin: 0 0 8px;
}

.page-about .cta-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--paper-soft);
  max-width: 52ch;
}

.page-about .cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 断点 ---------- */
@media (min-width: 600px) {
  .page-about .team-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .page-about .tl-item {
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 24px;
  }

  .page-about .tl-year {
    font-size: 20px;
  }

  .page-about .cover-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 48px;
    align-items: end;
    padding-block: 24px 46px;
  }

  .page-about .about-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 36px 34px;
    gap: 28px;
  }
}

@media (min-width: 1000px) {
  .page-about .about-body {
    grid-template-columns: 190px minmax(0, 1fr);
    column-gap: 56px;
    align-items: start;
  }

  .page-about .about-rail {
    display: block;
    position: sticky;
    top: calc(var(--header-h) + 22px);
    align-self: start;
    padding-top: 44px;
  }

  .page-about .about-section {
    padding-block: 40px 44px;
  }
}
<<<PAGE_CSS_END>>>