.page-about {
  --about-hair: rgba(138, 151, 168, 0.22);
  --about-hair-light: #D8E0EA;
  background: var(--paper);
  color: var(--text);
  font-family: var(--font-body);
}

.page-about .container {
  max-width: var(--max);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 20px 0 44px;
  background: var(--ink-900);
  color: var(--mist);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(138, 151, 168, 0.12) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(138, 151, 168, 0.12) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(130% 100% at 85% 0%, #000 0%, transparent 74%);
  mask-image: radial-gradient(130% 100% at 85% 0%, #000 0%, transparent 74%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: -180px;
  right: -140px;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(91, 108, 255, 0.34) 0%, rgba(25, 227, 208, 0.10) 45%, transparent 70%);
  pointer-events: none;
}

.page-about .about-hero > .container {
  position: relative;
  z-index: 1;
}

.page-about .about-hero .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  margin-bottom: 26px;
}

.page-about .about-hero .breadcrumb-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--steel);
}

.page-about .about-hero .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  color: rgba(138, 151, 168, 0.6);
}

.page-about .about-hero .breadcrumb-link {
  color: var(--steel);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.14s var(--ease), border-color 0.14s var(--ease);
}

.page-about .about-hero .breadcrumb-link:hover,
.page-about .about-hero .breadcrumb-link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

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

.page-about .about-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  align-items: start;
}

.page-about .about-hero-copy .eyebrow {
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.page-about .about-hero-copy .eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--cyan);
}

.page-about .about-hero h1 {
  font-family: var(--font-head);
  font-size: 30px;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: #fff;
  margin: 0 0 18px;
  max-width: 20em;
}

.page-about .about-hero .lede {
  font-size: 15px;
  line-height: 1.8;
  color: rgba(233, 238, 245, 0.82);
  margin: 0 0 26px;
  max-width: 46em;
}

.page-about .hero-facts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--about-hair);
  border-top: 1px solid var(--about-hair);
  border-bottom: 1px solid var(--about-hair);
  margin-bottom: 26px;
}

.page-about .hero-facts .fact {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 10px 14px 0;
  background: transparent;
}

.page-about .hero-facts .fact + .fact {
  padding-left: 14px;
}

.page-about .fact-value {
  font-family: var(--font-mono);
  font-size: 24px;
  line-height: 1;
  color: var(--cyan);
}

.page-about .fact-label {
  font-size: 12px;
  line-height: 1.5;
  color: var(--steel);
}

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

.page-about .hero-actions .btn {
  min-width: 0;
}

.page-about .about-hero .btn-ghost {
  border-color: rgba(233, 238, 245, 0.34);
  color: var(--mist);
}

.page-about .about-hero .btn-ghost:hover,
.page-about .about-hero .btn-ghost:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
}

.page-about .about-hero-figure {
  margin: 0;
  border: 1px solid var(--about-hair);
  background: var(--ink-800);
}

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

.page-about .about-hero-figure .figure-caption {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--steel);
  padding: 10px 14px;
  border-top: 1px solid var(--about-hair);
  text-transform: uppercase;
}

/* ---------- 通用章节 ---------- */
.page-about .section {
  padding: 44px 0;
}

.page-about .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--steel);
  text-transform: uppercase;
  margin: 0 0 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-about .eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: currentColor;
  opacity: 0.7;
}

.page-about h2 {
  font-family: var(--font-head);
  font-size: 24px;
  line-height: 1.28;
  letter-spacing: -0.02em;
  color: var(--text);
  margin: 0 0 14px;
}

.page-about h3 {
  font-family: var(--font-head);
  font-size: 17px;
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--text);
  margin: 0 0 8px;
}

.page-about p {
  font-size: 15px;
  line-height: 1.8;
  margin: 0 0 14px;
}

.page-about a {
  color: var(--violet);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 品牌坐标 ---------- */
.page-about .about-coord {
  background: var(--mist);
  border-top: 1px solid var(--about-hair-light);
  border-bottom: 1px solid var(--about-hair-light);
}

.page-about .coord-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-about .coord-index h2 {
  margin-bottom: 10px;
}

.page-about .coord-note {
  font-size: 14px;
  color: var(--steel);
  line-height: 1.7;
  margin: 0;
}

.page-about .coord-body > p {
  border-left: 2px solid var(--cyan);
  padding-left: 16px;
  color: var(--text);
  margin-bottom: 22px;
}

.page-about .audience-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--about-hair-light);
  border: 1px solid var(--about-hair-light);
}

.page-about .audience-list li {
  display: flex;
  gap: 14px;
  padding: 16px 18px;
  background: var(--paper);
}

.page-about .audience-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
  background: var(--ink-800);
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  border-radius: var(--radius);
}

.page-about .audience-list h3 {
  font-size: 15px;
  margin-bottom: 4px;
}

.page-about .audience-list p {
  font-size: 14px;
  line-height: 1.75;
  color: #47536B;
  margin: 0;
}

/* ---------- 发展历程 ---------- */
.page-about .about-journey {
  background: var(--paper);
}

.page-about .section-head {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 26px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--about-hair-light);
}

.page-about .section-aside {
  font-size: 14px;
  color: var(--steel);
  margin: 0;
  max-width: 34em;
}

.page-about .journey-tablist {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--about-hair-light);
  border: 1px solid var(--about-hair-light);
  margin-bottom: 20px;
}

.page-about .journey-tab {
  display: flex;
  flex-direction: column;
  gap: 5px;
  text-align: left;
  cursor: pointer;
  background: var(--paper);
  border: 0;
  border-left: 2px solid transparent;
  padding: 14px 16px;
  color: var(--text);
  font-family: var(--font-body);
  transition: background 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-about .journey-tab:hover {
  background: #fff;
}

.page-about .journey-tab[aria-selected="true"] {
  background: #fff;
  border-left-color: var(--cyan);
}

.page-about .journey-tab:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: -2px;
}

.page-about .j-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--steel);
}

.page-about .j-name {
  font-family: var(--font-head);
  font-size: 16px;
  letter-spacing: -0.01em;
}

.page-about .journey-tab[aria-selected="true"] .j-num {
  color: #0F9C8F;
}

.page-about .j-note {
  font-size: 12px;
  color: var(--steel);
}

.page-about .journey-panel {
  background: #fff;
  border: 1px solid var(--about-hair-light);
  border-top: 2px solid var(--ink-800);
  padding: 22px 20px;
}

.page-about .journey-panel[hidden] {
  display: none;
}

.page-about .journey-panel h3 {
  margin-bottom: 10px;
}

.page-about .journey-panel p {
  color: #33405A;
  margin-bottom: 16px;
}

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

.page-about .panel-points li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.7;
  color: #33405A;
}

.page-about .panel-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 8px;
  background: var(--cyan);
  border-radius: 1px;
}

/* ---------- 四条服务线 ---------- */
.page-about .about-lines {
  background: var(--mist);
  border-top: 1px solid var(--about-hair-light);
  border-bottom: 1px solid var(--about-hair-light);
}

.page-about .lines-head {
  max-width: 46em;
  margin-bottom: 26px;
}

.page-about .lines-lede {
  color: #33405A;
  margin: 0;
}

.page-about .lines-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-bottom: 26px;
}

.page-about .line-card {
  background: var(--paper);
  border: 1px solid var(--about-hair-light);
  border-top: 2px solid var(--ink-800);
  padding: 18px 18px 20px;
  display: flex;
  flex-direction: column;
  transition: transform 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-about .line-card:hover {
  transform: translateY(-2px);
  border-top-color: var(--cyan);
}

.page-about .line-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--steel);
  margin-bottom: 10px;
}

.page-about .line-card h3 {
  font-size: 16px;
  margin-bottom: 8px;
}

.page-about .line-card p {
  font-size: 14px;
  line-height: 1.75;
  color: #47536B;
  margin: 0 0 14px;
  flex: 1;
}

.page-about .line-link {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--violet);
  text-decoration: none;
  border-bottom: 1px solid rgba(91, 108, 255, 0.4);
  align-self: flex-start;
  padding-bottom: 2px;
  transition: color 0.14s var(--ease), border-color 0.14s var(--ease);
}

.page-about .line-link:hover,
.page-about .line-link:focus-visible {
  color: #3F4EDB;
  border-bottom-color: #3F4EDB;
}

.page-about .lines-figure {
  margin: 0;
  border: 1px solid var(--about-hair-light);
  background: var(--paper);
}

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

.page-about .lines-figure .figure-caption {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--steel);
  padding: 10px 14px;
  border-top: 1px solid var(--about-hair-light);
}

/* ---------- 团队与协作网络 ---------- */
.page-about .about-network {
  background: var(--paper);
}

.page-about .network-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  align-items: start;
}

.page-about .network-figure {
  margin: 0;
  border: 1px solid var(--ink-700);
  background: var(--ink-800);
}

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

.page-about .network-figure .figure-caption {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--steel);
  padding: 10px 14px;
  border-top: 1px solid var(--about-hair);
}

.page-about .network-copy > p {
  color: #33405A;
}

.page-about .stat-strip {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--about-hair-light);
  border: 1px solid var(--about-hair-light);
  margin: 20px 0;
}

.page-about .stat {
  background: var(--mist);
  padding: 14px 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .stat-num {
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1;
  color: var(--ink-800);
  font-weight: 600;
}

.page-about .stat-num em {
  font-style: normal;
  font-size: 12px;
  color: var(--steel);
  margin-left: 3px;
  font-weight: 400;
}

.page-about .stat-label {
  font-size: 12px;
  color: #47536B;
  line-height: 1.5;
}

.page-about .network-foot {
  font-size: 14px;
  color: #47536B;
  border-left: 2px solid var(--orange);
  padding-left: 14px;
  margin-bottom: 20px;
}

.page-about .network-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 治理与资质 ---------- */
.page-about .about-governance {
  background: var(--mist);
  border-top: 1px solid var(--about-hair-light);
  border-bottom: 1px solid var(--about-hair-light);
}

.page-about .gov-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-about .gov-note {
  font-size: 14px;
  color: var(--steel);
  line-height: 1.8;
  margin: 0;
}

.page-about .gov-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--about-hair-light);
  border: 1px solid var(--about-hair-light);
}

.page-about .gov-list li {
  background: var(--paper);
  padding: 16px 18px;
}

.page-about .gov-list h3 {
  font-size: 15px;
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 6px;
}

.page-about .gov-list h3::before {
  content: "▍";
  color: var(--cyan);
  font-size: 12px;
}

.page-about .gov-list p {
  font-size: 14px;
  line-height: 1.75;
  color: #47536B;
  margin: 0;
}

.page-about .gov-list a {
  color: var(--violet);
}

/* ---------- 荣誉与回访 ---------- */
.page-about .about-honor {
  background: var(--ink-800);
  color: var(--mist);
  position: relative;
  overflow: hidden;
}

.page-about .about-honor::before {
  content: "";
  position: absolute;
  top: -120px;
  left: -100px;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(25, 227, 208, 0.16) 0%, transparent 68%);
  pointer-events: none;
}

.page-about .honor-board {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

.page-about .about-honor .eyebrow {
  color: var(--cyan);
}

.page-about .about-honor h2 {
  color: #fff;
  margin-bottom: 12px;
}

.page-about .honor-copy p {
  color: rgba(233, 238, 245, 0.78);
  margin: 0;
}

.page-about .honor-metrics {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--about-hair);
  border: 1px solid var(--about-hair);
  align-self: start;
}

.page-about .honor-metric {
  background: rgba(10, 15, 28, 0.55);
  padding: 14px 16px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.page-about .honor-value {
  font-family: var(--font-mono);
  font-size: 24px;
  line-height: 1;
  color: var(--cyan);
  white-space: nowrap;
}

.page-about .honor-value em {
  font-style: normal;
  font-size: 12px;
  color: var(--steel);
  margin-left: 3px;
}

.page-about .honor-label {
  font-size: 12px;
  color: rgba(233, 238, 245, 0.72);
  text-align: right;
}

/* ---------- 结尾行动区 ---------- */
.page-about .about-cta {
  background: var(--paper);
  padding: 40px 0 56px;
}

.page-about .cta-panel {
  border: 1px solid var(--about-hair-light);
  border-left: 3px solid var(--cyan);
  background: var(--mist);
  padding: 24px 22px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-about .cta-copy h2 {
  font-size: 21px;
  margin-bottom: 8px;
}

.page-about .cta-copy p {
  font-size: 14px;
  color: #47536B;
  margin: 0;
  max-width: 40em;
}

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

/* ---------- 平板 ---------- */
@media (min-width: 640px) {
  .page-about .about-hero h1 {
    font-size: 36px;
  }

  .page-about .hero-facts .fact-value {
    font-size: 28px;
  }

  .page-about .journey-tablist {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .page-about .stat-strip {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .honor-metrics {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .honor-metric {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 18px 16px;
  }

  .page-about .honor-label {
    text-align: left;
  }

  .page-about .journey-panel {
    padding: 26px 24px;
  }

  .page-about .cta-panel {
    padding: 30px 28px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 960px) {
  .page-about .about-hero {
    padding: 26px 0 64px;
  }

  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: 48px;
    align-items: center;
  }

  .page-about .about-hero h1 {
    font-size: 42px;
  }

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

  .page-about .section {
    padding: 68px 0;
  }

  .page-about h2 {
    font-size: 30px;
  }

  .page-about .coord-grid {
    grid-template-columns: 280px minmax(0, 1fr);
    gap: 56px;
  }

  .page-about .coord-index {
    position: sticky;
    top: 96px;
  }

  .page-about .section-head {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
    gap: 32px;
  }

  .page-about .section-aside {
    text-align: right;
    max-width: 26em;
  }

  .page-about .journey-tablist {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .journey-panel {
    padding: 30px 32px;
  }

  .page-about .panel-points {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

  .page-about .lines-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
  }

  .page-about .network-grid {
    grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
    gap: 44px;
    align-items: center;
  }

  .page-about .gov-grid {
    grid-template-columns: 280px minmax(0, 1fr);
    gap: 56px;
  }

  .page-about .gov-index {
    position: sticky;
    top: 96px;
  }

  .page-about .honor-board {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 48px;
    align-items: center;
  }

  .page-about .cta-panel {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 32px;
    padding: 34px 34px;
  }

  .page-about .cta-actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1200px) {
  .page-about .about-hero h1 {
    font-size: 46px;
  }

  .page-about .about-hero-figure {
    transform: translateY(6px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .line-card,
  .page-about .journey-tab,
  .page-about .line-link,
  .page-about .about-hero .breadcrumb-link {
    transition: none;
  }

  .page-about .line-card:hover {
    transform: none;
  }
}
<<<END>>>