.page-about {
  --about-note: 208px;
  --about-ruler: 92px;
  background: var(--paper);
  color: var(--text);
}

/* ---------- 封面 ---------- */
.page-about .about-cover {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + 34px) 0 52px;
  background:
    radial-gradient(120% 90% at 84% -10%, #1d3149 0%, rgba(29, 49, 73, 0) 62%),
    var(--ink-800);
  color: var(--paper);
  border-bottom: 1px solid var(--line-dark);
}

.page-about .about-cover::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 132px;
  background: repeating-linear-gradient(115deg, rgba(200, 162, 76, 0.12) 0 1px, transparent 1px 15px);
  pointer-events: none;
}

.page-about .about-cover .breadcrumb-list {
  margin-bottom: 26px;
}

.page-about .about-cover .breadcrumb-link {
  color: rgba(241, 231, 212, 0.68);
}

.page-about .about-cover .breadcrumb-current {
  color: var(--gold-bright);
}

.page-about .cover-grid {
  display: grid;
  gap: 32px;
}

.page-about .about-cover .eyebrow {
  color: var(--gold);
  font-family: var(--font-mono);
  letter-spacing: 0.18em;
}

.page-about .cover-main h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 7.4vw, 62px);
  line-height: 1.14;
  letter-spacing: 0.04em;
  text-align: left;
}

.page-about .cover-lead {
  margin: 20px 0 0;
  max-width: 34em;
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.9;
  color: rgba(241, 231, 212, 0.84);
}

.page-about .cover-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 20px;
  margin: 30px 0 0;
  padding: 20px 0 0;
  list-style: none;
  border-top: 1px solid var(--line-dark);
}

.page-about .cover-stats li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 2px 4px;
}

.page-about .stat-num {
  font-family: var(--font-mono);
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--gold-bright);
  letter-spacing: 0.02em;
}

.page-about .stat-unit {
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  color: rgba(241, 231, 212, 0.72);
}

.page-about .stat-label {
  flex-basis: 100%;
  font-family: var(--font-body);
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  color: rgba(241, 231, 212, 0.56);
}

.page-about .cover-index {
  border-top: 1px solid var(--line-dark);
  padding-top: 18px;
}

.page-about .index-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-about .index-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-about .index-list a {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 9px 4px;
  color: rgba(241, 231, 212, 0.84);
  text-decoration: none;
  font-family: var(--font-body);
  font-size: var(--fs-md);
  border-bottom: 1px solid rgba(200, 162, 76, 0.14);
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-about .index-list a .mono {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--gold);
  letter-spacing: 0.1em;
}

.page-about .index-list a:hover,
.page-about .index-list a:focus-visible {
  color: var(--gold-bright);
  background: rgba(200, 162, 76, 0.08);
}

/* ---------- 自述 ---------- */
.page-about .about-story {
  background: var(--paper);
}

.page-about .story-grid {
  display: grid;
  gap: 34px;
}

.page-about .about-story .eyebrow {
  color: var(--gold-ink);
  font-family: var(--font-mono);
  letter-spacing: 0.18em;
}

.page-about .about-story .subhead {
  margin: 12px 0 22px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 4.6vw, 42px);
  line-height: 1.26;
  letter-spacing: 0.03em;
  color: var(--text);
}

.page-about .story-text p {
  margin: 0 0 18px;
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.9;
  max-width: 34em;
}

.page-about .story-text a {
  color: var(--gold-ink);
  text-decoration: none;
  border-bottom: 1px solid var(--gold);
  padding-bottom: 1px;
}

.page-about .story-text a:hover,
.page-about .story-text a:focus-visible {
  color: var(--red);
  border-bottom-color: var(--red);
}

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

.page-about .media-frame {
  overflow: hidden;
  background: var(--slate);
  border: 1px solid var(--line-light);
}

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

.page-about .media-caption {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* ---------- 三组 ---------- */
.page-about .about-team {
  background: linear-gradient(180deg, var(--paper) 0%, #ece0c9 100%);
}

.page-about .about-team .eyebrow {
  color: var(--gold-ink);
  font-family: var(--font-mono);
  letter-spacing: 0.18em;
}

.page-about .about-team .subhead {
  margin: 12px 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 4.6vw, 42px);
  line-height: 1.26;
  letter-spacing: 0.03em;
}

.page-about .team-lead {
  margin: 0 0 30px;
  max-width: 38em;
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.9;
  color: var(--muted);
}

.page-about .team-grid {
  display: grid;
  gap: 18px;
}

.page-about .team-card {
  position: relative;
  padding: 24px 22px 22px;
  background: var(--ink-800);
  color: var(--paper);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-about .team-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 54px;
  height: 2px;
  background: var(--gold);
}

.page-about .team-card .fold-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 12px;
  align-items: baseline;
}

.page-about .team-card .fold-head h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-lg);
  letter-spacing: 0.06em;
  color: var(--paper);
}

.page-about .team-card .team-no {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  letter-spacing: 0.12em;
  color: var(--gold);
}

.page-about .team-card .fold-toggle {
  grid-column: 1 / -1;
  justify-self: start;
  margin-top: 10px;
  padding: 6px 12px;
  background: transparent;
  border: 1px solid var(--line-dark);
  color: var(--gold-bright);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.12em;
  cursor: pointer;
  clip-path: var(--cut);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-about .team-card .fold-toggle:hover,
.page-about .team-card .fold-toggle:focus-visible {
  border-color: var(--gold);
  color: var(--paper);
}

.page-about .team-oneline {
  margin: 14px 0 0;
  font-family: var(--font-body);
  font-size: var(--fs-md);
  line-height: 1.8;
  color: rgba(241, 231, 212, 0.86);
}

.page-about .team-card .fold-body {
  margin-top: 14px;
}

.page-about .team-card .fold-body ul.team-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-about .team-card .team-list li {
  position: relative;
  padding-left: 16px;
  font-family: var(--font-body);
  font-size: var(--fs-md);
  line-height: 1.8;
  color: rgba(241, 231, 212, 0.76);
}

.page-about .team-card .team-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 1px;
  background: var(--gold);
}

.page-about .team-flow {
  margin-top: 26px;
  padding: 22px 20px;
  background: var(--card);
  border-left: 3px solid var(--gold);
}

.page-about .flow-title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.2em;
  color: var(--gold-ink);
}

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

.page-about .flow-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  font-family: var(--font-body);
  font-size: var(--fs-md);
  line-height: 1.8;
  color: var(--text);
}

.page-about .flow-list .mono {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--red);
  letter-spacing: 0.1em;
  padding-top: 4px;
}

/* ---------- 校对节奏 ---------- */
.page-about .about-rhythm {
  background: var(--paper);
}

.page-about .rhythm-grid {
  display: grid;
  gap: 30px;
}

.page-about .about-rhythm .eyebrow {
  color: var(--gold-ink);
  font-family: var(--font-mono);
  letter-spacing: 0.18em;
}

.page-about .about-rhythm .subhead {
  margin: 12px 0 22px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 4.6vw, 42px);
  line-height: 1.26;
  letter-spacing: 0.03em;
}

.page-about .rhythm-main p {
  margin: 0 0 18px;
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.9;
  max-width: 34em;
}

.page-about .rhythm-main a {
  color: var(--gold-ink);
  text-decoration: none;
  border-bottom: 1px solid var(--gold);
}

.page-about .rhythm-main a:hover,
.page-about .rhythm-main a:focus-visible {
  color: var(--red);
  border-bottom-color: var(--red);
}

.page-about .rhythm-figure {
  margin: 26px 0;
}

.page-about .rhythm-note {
  align-self: start;
  padding: 18px 16px;
  background: rgba(251, 245, 232, 0.72);
  border-left: 2px solid var(--red);
}

.page-about .note-title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.18em;
  color: var(--red);
}

.page-about .note-item {
  position: relative;
  margin: 0 0 16px;
  padding-top: 12px;
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  line-height: 1.85;
  color: var(--muted);
}

.page-about .note-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 26px;
  height: 1px;
  background: var(--red);
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  background:
    linear-gradient(180deg, var(--ink-800) 0%, var(--ink-900) 100%);
  color: var(--paper);
}

.page-about .about-timeline .eyebrow {
  color: var(--gold);
  font-family: var(--font-mono);
  letter-spacing: 0.18em;
}

.page-about .about-timeline .subhead {
  margin: 12px 0 26px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 4.6vw, 42px);
  line-height: 1.26;
  letter-spacing: 0.03em;
  color: var(--paper);
}

.page-about .timeline-figure {
  margin: 0 0 30px;
}

.page-about .about-timeline .media-caption {
  color: rgba(241, 231, 212, 0.5);
}

.page-about .timeline-wrap {
  display: grid;
  gap: 24px;
}

.page-about .tl-ruler {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 6px;
}

.page-about .ruler-mark {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  border-left: 2px solid var(--gold);
  background: rgba(200, 162, 76, 0.08);
  text-decoration: none;
  white-space: nowrap;
  transition: background-color var(--dur) var(--ease);
}

.page-about .ruler-mark:hover,
.page-about .ruler-mark:focus-visible {
  background: rgba(200, 162, 76, 0.2);
}

.page-about .ruler-mark .mono {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  letter-spacing: 0.1em;
  color: var(--gold-bright);
}

.page-about .ruler-text {
  font-family: var(--font-body);
  font-size: var(--fs-xs);
  color: rgba(241, 231, 212, 0.7);
}

.page-about .timeline-list {
  position: relative;
  margin: 0;
  padding: 0 0 0 22px;
  list-style: none;
}

.page-about .timeline-list::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: var(--line-dark);
}

.page-about .tl-item {
  position: relative;
  padding: 0 0 28px 6px;
}

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

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: -22px;
  top: 8px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 1px solid var(--gold);
  box-shadow: 0 0 0 3px rgba(200, 162, 76, 0.14);
}

.page-about .tl-year {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-about .tl-item h3 {
  margin: 8px 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-lg);
  letter-spacing: 0.05em;
  color: var(--paper);
}

.page-about .tl-item p {
  margin: 0;
  max-width: 38em;
  font-family: var(--font-body);
  font-size: var(--fs-md);
  line-height: 1.9;
  color: rgba(241, 231, 212, 0.76);
}

/* ---------- 季度沟通 ---------- */
.page-about .about-community {
  background: var(--paper);
}

.page-about .community-grid {
  display: grid;
  gap: 30px;
}

.page-about .about-community .eyebrow {
  color: var(--gold-ink);
  font-family: var(--font-mono);
  letter-spacing: 0.18em;
}

.page-about .about-community .subhead {
  margin: 12px 0 22px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 4.6vw, 42px);
  line-height: 1.26;
  letter-spacing: 0.03em;
}

.page-about .community-main p {
  margin: 0 0 18px;
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.9;
  max-width: 34em;
}

.page-about .community-cards {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-about .quote-card {
  padding: 20px 18px;
  background: var(--card);
  border-left: 3px solid var(--gold);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.page-about .quote-no {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.12em;
  color: var(--gold-ink);
}

.page-about .quote-text {
  margin: 0 0 12px;
  font-family: var(--font-body);
  font-size: var(--fs-md);
  line-height: 1.85;
  color: var(--text);
}

.page-about .quote-from {
  margin: 0;
  padding-top: 10px;
  border-top: 1px solid var(--line-light);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- 联系方式 ---------- */
.page-about .about-contact {
  background: var(--ink-800);
  color: var(--paper);
  border-top: 1px solid var(--line-dark);
}

.page-about .contact-grid {
  display: grid;
  gap: 28px;
}

.page-about .about-contact .eyebrow {
  color: var(--gold);
  font-family: var(--font-mono);
  letter-spacing: 0.18em;
}

.page-about .about-contact .subhead {
  margin: 12px 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 4.6vw, 40px);
  line-height: 1.26;
  letter-spacing: 0.03em;
  color: var(--paper);
}

.page-about .contact-copy p {
  margin: 0 0 16px;
  max-width: 34em;
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.9;
  color: rgba(241, 231, 212, 0.82);
}

.page-about .contact-copy a {
  color: var(--gold-bright);
  text-decoration: none;
  border-bottom: 1px solid var(--gold);
}

.page-about .contact-copy a:hover,
.page-about .contact-copy a:focus-visible {
  color: var(--paper);
}

.page-about .contact-card {
  padding: 24px 20px;
  background: var(--slate);
  border-left: 2px solid var(--gold);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
}

.page-about .card-title {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-about .contact-card .contact-row {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-top: 1px solid rgba(200, 162, 76, 0.22);
}

.page-about .contact-card .contact-label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.14em;
  color: rgba(241, 231, 212, 0.58);
}

.page-about .contact-card .contact-value {
  font-family: var(--font-mono);
  font-size: var(--fs-md);
  line-height: 1.7;
  color: var(--paper);
  word-break: break-word;
}

.page-about .contact-note {
  margin: 16px 0 0;
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  line-height: 1.85;
  color: rgba(241, 231, 212, 0.66);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .cover-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .tl-ruler {
    overflow: visible;
    flex-wrap: wrap;
  }

  .page-about .community-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .cover-grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 0.9fr);
    gap: 54px;
    align-items: start;
  }

  .page-about .cover-index {
    border-top: none;
    border-left: 1px solid var(--line-dark);
    padding-top: 0;
    padding-left: 22px;
  }

  .page-about .story-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .team-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .rhythm-grid {
    grid-template-columns: minmax(0, 1fr) var(--about-note);
    gap: 48px;
    align-items: start;
  }

  .page-about .rhythm-note {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-about .timeline-wrap {
    grid-template-columns: var(--about-ruler) minmax(0, 1fr);
    gap: 32px;
    align-items: start;
  }

  .page-about .tl-ruler {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    flex-direction: column;
    gap: 14px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .ruler-mark {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
  }

  .page-about .timeline-list {
    padding-left: 26px;
  }

  .page-about .community-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 46px;
    align-items: start;
  }

  .page-about .contact-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr);
    gap: 48px;
    align-items: start;
  }
}

@media (min-width: 1180px) {
  .page-about .cover-main h1 {
    max-width: 15em;
  }

  .page-about .about-cover {
    padding-bottom: 64px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .index-list a,
  .page-about .ruler-mark,
  .page-about .team-card .fold-toggle {
    transition: none;
  }
}
<<<END>>>