.page-about {
  background: var(--navy);
  color: var(--text);
  overflow-x: hidden;
}

.page-about h1,
.page-about h2,
.page-about h3 {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.01em;
  margin: 0;
}

.page-about p {
  margin: 0;
}

.page-about .about-crumb {
  padding-top: 18px;
  padding-bottom: 4px;
}

.page-about .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
}

.page-about .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin-right: 10px;
  color: var(--mist);
}

.page-about .breadcrumb-link {
  color: var(--mist);
  text-decoration: none;
}

.page-about .breadcrumb-link:hover,
.page-about .breadcrumb-link:focus-visible {
  color: var(--gold-soft);
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: 20px var(--gutter) 0;
}

.page-about .about-hero-inner {
  position: relative;
  border: 2px solid var(--line);
  background: linear-gradient(158deg, var(--navy-2) 0%, var(--navy) 72%);
  padding: 28px 20px 32px;
}

.page-about .about-hero-inner::before,
.page-about .about-hero-inner::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid var(--gold);
}

.page-about .about-hero-inner::before {
  top: -2px;
  left: -2px;
  border-right: 0;
  border-bottom: 0;
}

.page-about .about-hero-inner::after {
  bottom: -2px;
  right: -2px;
  border-left: 0;
  border-top: 0;
}

.page-about .about-plate {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 2px solid var(--line);
  padding: 6px 12px;
  margin-bottom: 22px;
}

.page-about .about-plate .plate-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gold);
}

.page-about .about-plate .eyebrow {
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--gold-soft);
}

.page-about .about-hero h1 {
  font-size: clamp(32px, 7vw, 58px);
  line-height: 1.14;
  color: #fff;
  max-width: 18em;
}

.page-about .about-lead {
  margin-top: 20px;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist-soft);
}

.page-about .hero-facts {
  display: grid;
  gap: 12px;
  margin: 28px 0 0;
  padding-top: 22px;
  border-top: 1px solid var(--line-soft);
}

.page-about .hero-fact dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-about .hero-fact dd {
  margin: 6px 0 0;
  font-size: 14px;
  color: var(--text);
}

.page-about .fact-num {
  font-family: var(--font-mono);
  font-size: 24px;
  color: var(--gold);
  margin-right: 2px;
}

.page-about .about-hero-figure {
  margin: 0;
  border: 2px solid var(--line);
  border-top: 0;
  background: var(--navy-3);
}

.page-about .about-hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 380px;
  object-fit: cover;
}

.page-about .img-caption {
  padding: 10px 14px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--mist);
  border-top: 1px solid var(--line-soft);
}

/* ---------- 通用段落 ---------- */
.page-about .about-sec {
  max-width: var(--max);
  margin: 0 auto;
  padding: 56px var(--gutter);
}

.page-about .section-head {
  margin-bottom: 32px;
}

.page-about .section-head .eyebrow {
  display: block;
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--lake);
  margin-bottom: 12px;
}

.page-about .section-title {
  font-size: clamp(24px, 4.4vw, 36px);
  line-height: 1.25;
  color: #fff;
}

.page-about .section-note {
  margin-top: 12px;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist-soft);
}

/* ---------- 时间线 ---------- */
.page-about .timeline-shell {
  display: grid;
  gap: 22px;
}

.page-about .year-rail {
  display: flex;
  align-items: center;
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .rail-label {
  flex: 0 0 auto;
  font-family: var(--font-serif);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--mist);
}

.page-about .rail-list {
  display: flex;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .rail-link {
  display: flex;
  align-items: baseline;
  gap: 6px;
  padding: 6px 10px;
  border: 1px solid var(--line-soft);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--mist-soft);
  white-space: nowrap;
  transition: color 160ms ease-out, border-color 160ms ease-out;
}

.page-about .rail-link:hover,
.page-about .rail-link:focus-visible {
  color: var(--gold);
  border-color: var(--gold);
}

.page-about .rail-num {
  color: var(--gold);
}

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

.page-about .travel-line .timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 16px;
  padding-bottom: 40px;
}

.page-about .travel-line .timeline-item::before {
  content: "";
  position: absolute;
  left: 21px;
  top: 46px;
  bottom: 0;
  width: 1px;
  background: var(--line);
}

.page-about .travel-line .timeline-item:last-child {
  padding-bottom: 0;
}

.page-about .travel-line .timeline-item:last-child::before {
  display: none;
}

.page-about .timeline-node {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--gold);
  background: var(--navy-2);
}

.page-about .timeline-num {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--gold);
}

.page-about .timeline-body {
  padding-top: 2px;
}

.page-about .line-year {
  font-family: var(--font-mono);
  font-size: 18px;
  letter-spacing: 0.1em;
  color: var(--lake);
  margin-bottom: 8px;
}

.page-about .timeline-body h3 {
  font-size: 20px;
  line-height: 1.4;
  color: #fff;
  margin-bottom: 10px;
}

.page-about .timeline-body p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist-soft);
  max-width: 34em;
}

.page-about .inline-figure {
  margin: 20px 0 0;
  border: 2px solid var(--line-soft);
  background: var(--navy-3);
}

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

/* ---------- 命名原则 ---------- */
.page-about .about-principles {
  background: var(--indigo);
  border-top: 2px solid var(--gold);
  border-bottom: 2px solid var(--gold);
  margin-top: 24px;
}

.page-about .principles-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 52px var(--gutter);
}

.page-about .about-principles .section-title {
  color: var(--sand);
}

.page-about .about-principles .section-note {
  color: rgba(244, 239, 230, 0.78);
}

.page-about .about-principles .section-head .eyebrow {
  color: var(--gold-soft);
}

.page-about .acc-item {
  border: 1px solid rgba(244, 239, 230, 0.22);
  background: rgba(11, 30, 51, 0.34);
  margin-bottom: 10px;
}

.page-about .acc-trigger {
  display: flex;
  align-items: baseline;
  gap: 14px;
  width: 100%;
  padding: 16px;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  color: var(--sand);
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 900;
  line-height: 1.5;
}

.page-about .acc-trigger:hover,
.page-about .acc-trigger:focus-visible {
  color: var(--gold-soft);
}

.page-about .acc-idx {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--gold);
  flex: 0 0 auto;
}

.page-about .acc-panel {
  padding: 0 16px 18px 46px;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(244, 239, 230, 0.84);
}

.page-about .acc-panel > p + p {
  margin-top: 8px;
}

.page-about .compare {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: baseline;
  border-left: 2px solid var(--gold);
  padding: 6px 0 6px 12px;
}

.page-about .compare-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  padding: 2px 6px;
  border: 1px solid currentColor;
  color: var(--mist-soft);
}

.page-about .compare-new .compare-tag {
  color: var(--lake);
}

.page-about .principle-foot {
  margin-top: 18px;
}

.page-about .link-arrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  padding-bottom: 3px;
  border-bottom: 1px solid var(--gold);
  text-decoration: none;
}

.page-about .about-principles .link-arrow {
  color: var(--gold-soft);
}

.page-about .link-arrow:hover,
.page-about .link-arrow:focus-visible {
  color: #fff;
  border-bottom-color: #fff;
}

/* ---------- 团队 ---------- */
.page-about .team-bars {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-about .team-block {
  padding: 20px 18px 22px;
  background: var(--navy-2);
  border: 1px solid var(--line-soft);
  border-top: 6px solid var(--gold);
  transition: transform 180ms ease-out, box-shadow 180ms ease-out;
}

.page-about .tb-doc {
  border-top-color: var(--lake);
}

.page-about .tb-service {
  border-top-color: var(--barley);
}

.page-about .team-block:hover,
.page-about .team-block:focus-within {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hard);
}

.page-about .team-count {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist);
  margin-bottom: 6px;
}

.page-about .team-num {
  font-size: 30px;
  color: var(--gold);
  margin-right: 2px;
}

.page-about .team-block h3 {
  font-size: 19px;
  color: #fff;
  margin-bottom: 8px;
}

.page-about .team-block p:last-child {
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist-soft);
}

.page-about .team-flow {
  margin-top: 28px;
  padding: 22px 18px;
  border: 1px solid var(--line);
  background: linear-gradient(120deg, var(--navy-2), var(--navy) 80%);
}

.page-about .flow-title {
  font-family: var(--font-serif);
  font-size: 15px;
  letter-spacing: 0.08em;
  color: var(--gold-soft);
  margin-bottom: 16px;
}

.page-about .flow-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .flow-list li {
  display: flex;
  gap: 12px;
  align-items: baseline;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text);
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .flow-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .flow-num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--lake);
  flex: 0 0 auto;
}

.page-about .inline-figure--wide {
  margin-top: 28px;
}

/* ---------- 复盘 ---------- */
.page-about .about-review {
  background: var(--sand);
  color: var(--ink);
  border-top: 2px solid var(--gold);
}

.page-about .review-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 52px var(--gutter);
}

.page-about .about-review .section-title {
  color: var(--ink);
}

.page-about .about-review .section-note {
  color: rgba(16, 26, 36, 0.72);
}

.page-about .about-review .section-head .eyebrow {
  color: var(--indigo);
}

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

.page-about .review-item {
  padding: 20px 18px;
  background: #fff;
  border: 1px solid rgba(11, 30, 51, 0.16);
  border-left: 6px solid var(--indigo);
}

.page-about .review-num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--indigo);
}

.page-about .review-item h3 {
  font-size: 18px;
  color: var(--ink);
  margin: 8px 0 8px;
}

.page-about .review-item p {
  font-size: 14px;
  line-height: 1.85;
  color: rgba(16, 26, 36, 0.78);
}

.page-about .review-foot {
  margin-top: 20px;
  font-size: 13px;
  line-height: 1.8;
  color: rgba(16, 26, 36, 0.68);
  border-left: 2px solid var(--gold);
  padding-left: 12px;
}

.page-about .review-actions {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .review-actions .btn-line {
  color: var(--ink);
  border-color: rgba(11, 30, 51, 0.5);
}

.page-about .review-actions .btn-line:hover,
.page-about .review-actions .btn-line:focus-visible {
  border-color: var(--indigo);
  color: var(--indigo);
}

/* ---------- 结尾 ---------- */
.page-about .about-cta {
  background: var(--navy-3);
  border-top: 1px solid var(--line-soft);
}

.page-about .cta-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 44px var(--gutter) 56px;
}

.page-about .cta-inner h2 {
  font-size: clamp(22px, 4vw, 30px);
  line-height: 1.3;
  color: #fff;
}

.page-about .cta-inner > p {
  margin-top: 14px;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist-soft);
}

.page-about .cta-links {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.page-about .cta-links .link-arrow {
  color: var(--gold-soft);
}

/* ---------- 桌面 ---------- */
@media (min-width: 760px) {
  .page-about .about-hero-inner {
    padding: 44px 40px 48px;
  }

  .page-about .hero-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about .team-bars {
    flex-direction: row;
    align-items: stretch;
  }

  .page-about .team-block {
    padding: 24px 20px 26px;
  }

  .page-about .tb-ops {
    flex: 5 1 0;
  }

  .page-about .tb-doc {
    flex: 6 1 0;
  }

  .page-about .tb-service {
    flex: 7 1 0;
  }

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

  .page-about .flow-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 22px;
  }
}

@media (min-width: 960px) {
  .page-about .timeline-shell {
    grid-template-columns: 88px minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-about .year-rail {
    position: sticky;
    top: 90px;
    flex-direction: column;
    align-items: stretch;
    gap: 14px;
    overflow: visible;
    padding-bottom: 0;
    border-bottom: 0;
    border-left: 1px solid var(--line-soft);
    padding-left: 12px;
  }

  .page-about .rail-list {
    flex-direction: column;
    gap: 18px;
  }

  .page-about .rail-link {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    padding: 0;
    border: 0;
  }

  .page-about .rail-year {
    font-size: 14px;
    color: var(--mist-soft);
  }

  .page-about .rail-link:hover .rail-year,
  .page-about .rail-link:focus-visible .rail-year {
    color: var(--gold);
  }

  .page-about .travel-line .timeline-item {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 24px;
    padding-bottom: 52px;
  }

  .page-about .travel-line .timeline-item::before {
    left: 27px;
    top: 58px;
  }

  .page-about .timeline-node {
    width: 56px;
    height: 56px;
  }

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

  .page-about .inline-figure {
    max-width: 620px;
  }

  .page-about .about-principles .section-head,
  .page-about .principles-inner .section-head {
    max-width: 42em;
  }
}

.page-about {
  background: var(--navy);
  color: var(--text);
  overflow-x: hidden;
}

.page-about h1,
.page-about h2,
.page-about h3 {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.01em;
  margin: 0;
}

.page-about p {
  margin: 0;
}

.page-about .about-crumb {
  padding-top: 18px;
  padding-bottom: 4px;
}

.page-about .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
}

.page-about .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin-right: 10px;
  color: var(--mist);
}

.page-about .breadcrumb-link {
  color: var(--mist);
  text-decoration: none;
}

.page-about .breadcrumb-link:hover,
.page-about .breadcrumb-link:focus-visible {
  color: var(--gold-soft);
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: 20px var(--gutter) 0;
}

.page-about .about-hero-inner {
  position: relative;
  border: 2px solid var(--line);
  background: linear-gradient(158deg, var(--navy-2) 0%, var(--navy) 72%);
  padding: 28px 20px 32px;
}

.page-about .about-hero-inner::before,
.page-about .about-hero-inner::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid var(--gold);
}

.page-about .about-hero-inner::before {
  top: -2px;
  left: -2px;
  border-right: 0;
  border-bottom: 0;
}

.page-about .about-hero-inner::after {
  bottom: -2px;
  right: -2px;
  border-left: 0;
  border-top: 0;
}

.page-about .about-plate {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 2px solid var(--line);
  padding: 6px 12px;
  margin-bottom: 22px;
}

.page-about .about-plate .plate-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gold);
}

.page-about .about-plate .eyebrow {
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--gold-soft);
}

.page-about .about-hero h1 {
  font-size: clamp(32px, 7vw, 58px);
  line-height: 1.14;
  color: #fff;
  max-width: 18em;
}

.page-about .about-lead {
  margin-top: 20px;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist-soft);
}

.page-about .hero-facts {
  display: grid;
  gap: 12px;
  margin: 28px 0 0;
  padding-top: 22px;
  border-top: 1px solid var(--line-soft);
}

.page-about .hero-fact dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-about .hero-fact dd {
  margin: 6px 0 0;
  font-size: 14px;
  color: var(--text);
}

.page-about .fact-num {
  font-family: var(--font-mono);
  font-size: 24px;
  color: var(--gold);
  margin-right: 2px;
}

.page-about .about-hero-figure {
  margin: 0;
  border: 2px solid var(--line);
  border-top: 0;
  background: var(--navy-3);
}

.page-about .about-hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 380px;
  object-fit: cover;
}

.page-about .img-caption {
  padding: 10px 14px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--mist);
  border-top: 1px solid var(--line-soft);
}

/* ---------- 通用段落 ---------- */
.page-about .about-sec {
  max-width: var(--max);
  margin: 0 auto;
  padding: 56px var(--gutter);
}

.page-about .section-head {
  margin-bottom: 32px;
}

.page-about .section-head .eyebrow {
  display: block;
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--lake);
  margin-bottom: 12px;
}

.page-about .section-title {
  font-size: clamp(24px, 4.4vw, 36px);
  line-height: 1.25;
  color: #fff;
}

.page-about .section-note {
  margin-top: 12px;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist-soft);
}

/* ---------- 时间线 ---------- */
.page-about .timeline-shell {
  display: grid;
  gap: 22px;
}

.page-about .year-rail {
  display: flex;
  align-items: center;
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .rail-label {
  flex: 0 0 auto;
  font-family: var(--font-serif);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--mist);
}

.page-about .rail-list {
  display: flex;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .rail-link {
  display: flex;
  align-items: baseline;
  gap: 6px;
  padding: 6px 10px;
  border: 1px solid var(--line-soft);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--mist-soft);
  white-space: nowrap;
  transition: color 160ms ease-out, border-color 160ms ease-out;
}

.page-about .rail-link:hover,
.page-about .rail-link:focus-visible {
  color: var(--gold);
  border-color: var(--gold);
}

.page-about .rail-num {
  color: var(--gold);
}

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

.page-about .travel-line .timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 16px;
  padding-bottom: 40px;
}

.page-about .travel-line .timeline-item::before {
  content: "";
  position: absolute;
  left: 21px;
  top: 46px;
  bottom: 0;
  width: 1px;
  background: var(--line);
}

.page-about .travel-line .timeline-item:last-child {
  padding-bottom: 0;
}

.page-about .travel-line .timeline-item:last-child::before {
  display: none;
}

.page-about .timeline-node {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--gold);
  background: var(--navy-2);
}

.page-about .timeline-num {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--gold);
}

.page-about .timeline-body {
  padding-top: 2px;
}

.page-about .line-year {
  font-family: var(--font-mono);
  font-size: 18px;
  letter-spacing: 0.1em;
  color: var(--lake);
  margin-bottom: 8px;
}

.page-about .timeline-body h3 {
  font-size: 20px;
  line-height: 1.4;
  color: #fff;
  margin-bottom: 10px;
}

.page-about .timeline-body p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist-soft);
  max-width: 34em;
}

.page-about .inline-figure {
  margin: 20px 0 0;
  border: 2px solid var(--line-soft);
  background: var(--navy-3);
}

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

/* ---------- 命名原则 ---------- */
.page-about .about-principles {
  background: var(--indigo);
  border-top: 2px solid var(--gold);
  border-bottom: 2px solid var(--gold);
  margin-top: 24px;
}

.page-about .principles-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 52px var(--gutter);
}

.page-about .about-principles .section-title {
  color: var(--sand);
}

.page-about .about-principles .section-note {
  color: rgba(244, 239, 230, 0.78);
}

.page-about .about-principles .section-head .eyebrow {
  color: var(--gold-soft);
}

.page-about .acc-item {
  border: 1px solid rgba(244, 239, 230, 0.22);
  background: rgba(11, 30, 51, 0.34);
  margin-bottom: 10px;
}

.page-about .acc-trigger {
  display: flex;
  align-items: baseline;
  gap: 14px;
  width: 100%;
  padding: 16px;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  color: var(--sand);
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 900;
  line-height: 1.5;
}

.page-about .acc-trigger:hover,
.page-about .acc-trigger:focus-visible {
  color: var(--gold-soft);
}

.page-about .acc-idx {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--gold);
  flex: 0 0 auto;
}

.page-about .acc-panel {
  padding: 0 16px 18px 46px;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(244, 239, 230, 0.84);
}

.page-about .acc-panel > p + p {
  margin-top: 8px;
}

.page-about .compare {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: baseline;
  border-left: 2px solid var(--gold);
  padding: 6px 0 6px 12px;
}

.page-about .compare-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  padding: 2px 6px;
  border: 1px solid currentColor;
  color: var(--mist-soft);
}

.page-about .compare-new .compare-tag {
  color: var(--lake);
}

.page-about .principle-foot {
  margin-top: 18px;
}

.page-about .link-arrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  padding-bottom: 3px;
  border-bottom: 1px solid var(--gold);
  text-decoration: none;
}

.page-about .about-principles .link-arrow {
  color: var(--gold-soft);
}

.page-about .link-arrow:hover,
.page-about .link-arrow:focus-visible {
  color: #fff;
  border-bottom-color: #fff;
}

/* ---------- 团队 ---------- */
.page-about .team-bars {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-about .team-block {
  padding: 20px 18px 22px;
  background: var(--navy-2);
  border: 1px solid var(--line-soft);
  border-top: 6px solid var(--gold);
  transition: transform 180ms ease-out, box-shadow 180ms ease-out;
}

.page-about .tb-doc {
  border-top-color: var(--lake);
}

.page-about .tb-service {
  border-top-color: var(--barley);
}

.page-about .team-block:hover,
.page-about .team-block:focus-within {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hard);
}

.page-about .team-count {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist);
  margin-bottom: 6px;
}

.page-about .team-num {
  font-size: 30px;
  color: var(--gold);
  margin-right: 2px;
}

.page-about .team-block h3 {
  font-size: 19px;
  color: #fff;
  margin-bottom: 8px;
}

.page-about .team-block p:last-child {
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist-soft);
}

.page-about .team-flow {
  margin-top: 28px;
  padding: 22px 18px;
  border: 1px solid var(--line);
  background: linear-gradient(120deg, var(--navy-2), var(--navy) 80%);
}

.page-about .flow-title {
  font-family: var(--font-serif);
  font-size: 15px;
  letter-spacing: 0.08em;
  color: var(--gold-soft);
  margin-bottom: 16px;
}

.page-about .flow-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .flow-list li {
  display: flex;
  gap: 12px;
  align-items: baseline;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text);
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .flow-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .flow-num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--lake);
  flex: 0 0 auto;
}

.page-about .inline-figure--wide {
  margin-top: 28px;
}

/* ---------- 复盘 ---------- */
.page-about .about-review {
  background: var(--sand);
  color: var(--ink);
  border-top: 2px solid var(--gold);
}

.page-about .review-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 52px var(--gutter);
}

.page-about .about-review .section-title {
  color: var(--ink);
}

.page-about .about-review .section-note {
  color: rgba(16, 26, 36, 0.72);
}

.page-about .about-review .section-head .eyebrow {
  color: var(--indigo);
}

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

.page-about .review-item {
  padding: 20px 18px;
  background: #fff;
  border: 1px solid rgba(11, 30, 51, 0.16);
  border-left: 6px solid var(--indigo);
}

.page-about .review-num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--indigo);
}

.page-about .review-item h3 {
  font-size: 18px;
  color: var(--ink);
  margin: 8px 0;
}

.page-about .review-item p {
  font-size: 14px;
  line-height: 1.85;
  color: rgba(16, 26, 36, 0.78);
}

.page-about .review-foot {
  margin-top: 20px;
  font-size: 13px;
  line-height: 1.8;
  color: rgba(16, 26, 36, 0.68);
  border-left: 2px solid var(--gold);
  padding-left: 12px;
}

.page-about .review-actions {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .review-actions .btn-line {
  color: var(--ink);
  border-color: rgba(11, 30, 51, 0.5);
}

.page-about .review-actions .btn-line:hover,
.page-about .review-actions .btn-line:focus-visible {
  border-color: var(--indigo);
  color: var(--indigo);
}

/* ---------- 结尾 ---------- */
.page-about .about-cta {
  background: var(--navy-3);
  border-top: 1px solid var(--line-soft);
}

.page-about .cta-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 44px var(--gutter) 56px;
}

.page-about .cta-inner h2 {
  font-size: clamp(22px, 4vw, 30px);
  line-height: 1.3;
  color: #fff;
}

.page-about .cta-inner > p {
  margin-top: 14px;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist-soft);
}

.page-about .cta-links {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.page-about .cta-links .link-arrow {
  color: var(--gold-soft);
}

/* ---------- 桌面 ---------- */
@media (min-width: 760px) {
  .page-about .about-hero-inner {
    padding: 44px 40px 48px;
  }

  .page-about .hero-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about .team-bars {
    flex-direction: row;
    align-items: stretch;
  }

  .page-about .team-block {
    padding: 24px 20px 26px;
  }

  .page-about .tb-ops {
    flex: 5 1 0;
  }

  .page-about .tb-doc {
    flex: 6 1 0;
  }

  .page-about .tb-service {
    flex: 7 1 0;
  }

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

  .page-about .flow-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 22px;
  }
}

@media (min-width: 960px) {
  .page-about .timeline-shell {
    grid-template-columns: 88px minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-about .year-rail {
    position: sticky;
    top: 90px;
    flex-direction: column;
    align-items: stretch;
    gap: 14px;
    overflow: visible;
    padding-bottom: 0;
    padding-left: 12px;
    border-bottom: 0;
    border-left: 1px solid var(--line-soft);
  }

  .page-about .rail-list {
    flex-direction: column;
    gap: 18px;
  }

  .page-about .rail-link {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    padding: 0;
    border: 0;
  }

  .page-about .rail-year {
    font-size: 14px;
    color: var(--mist-soft);
  }

  .page-about .rail-link:hover .rail-year,
  .page-about .rail-link:focus-visible .rail-year {
    color: var(--gold);
  }

  .page-about .travel-line .timeline-item {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 24px;
    padding-bottom: 52px;
  }

  .page-about .travel-line .timeline-item::before {
    left: 27px;
    top: 58px;
  }

  .page-about .timeline-node {
    width: 56px;
    height: 56px;
  }

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

  .page-about .inline-figure {
    max-width: 620px;
  }

  .page-about .principles-inner .section-head {
    max-width: 42em;
  }
}