.page-about {
  --ab-hair: rgba(11, 13, 15, .12);
  --ab-hair-soft: rgba(11, 13, 15, .07);
  --ab-radius: var(--radius);
  background: var(--porcelain);
  color: var(--ink);
  overflow-x: clip;
  padding-bottom: clamp(40px, 6vw, 88px);
}

.page-about a:focus-visible,
.page-about summary:focus-visible,
.page-about [tabindex]:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-about .breadcrumb {
  margin: clamp(18px, 3vw, 30px) 0 clamp(22px, 4vw, 40px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-bottom: clamp(36px, 6vw, 76px);
  border-bottom: 1px solid var(--ab-hair);
}

.page-about .about-hero-grid {
  display: grid;
  gap: clamp(26px, 5vw, 56px);
  align-items: start;
}

.page-about .about-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  color: var(--blue);
}

.page-about .about-kicker::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--cyan);
}

.page-about .about-hero h1 {
  margin: 0 0 clamp(16px, 3vw, 24px);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 7.2vw, 56px);
  line-height: 1.08;
  letter-spacing: -.025em;
  text-wrap: balance;
}

.page-about .about-lead {
  max-width: 46ch;
  margin: 0 0 clamp(22px, 3vw, 30px);
  font-family: var(--font-body);
  font-size: clamp(15px, 1.7vw, 17.5px);
  line-height: 1.9;
  color: var(--ink-70);
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: clamp(24px, 4vw, 34px);
}

.page-about .about-figures {
  list-style: none;
  margin: 0;
  padding: clamp(16px, 3vw, 24px) 0 0;
  border-top: 1px solid var(--ab-hair);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(10px, 2.4vw, 22px);
}

.page-about .about-figure-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(18px, 3.6vw, 30px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--ink);
  letter-spacing: -.02em;
}

.page-about .about-figure-plus {
  color: var(--cyan);
}

.page-about .about-figure-label {
  display: block;
  margin-top: 8px;
  font-size: .72rem;
  line-height: 1.5;
  color: var(--ink-55);
}

.page-about .about-hero-figure {
  position: relative;
  margin: 0;
  border-radius: var(--ab-radius);
  overflow: hidden;
  background: var(--mist);
  box-shadow: 0 28px 64px -44px rgba(11, 13, 15, .55);
}

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

.page-about .about-hero-figure::after {
  content: "";
  position: absolute;
  top: 16px;
  right: 16px;
  width: 34px;
  height: 34px;
  border-top: 2px solid var(--cyan);
  border-right: 2px solid var(--cyan);
  opacity: .85;
  pointer-events: none;
}

.page-about .about-hero-figure figcaption {
  position: absolute;
  inset: auto 0 0 0;
  padding: 26px 16px 12px;
  font-size: .72rem;
  line-height: 1.55;
  color: var(--paper);
  background: linear-gradient(to top, rgba(11, 13, 15, .86), rgba(11, 13, 15, 0));
}

/* ---------- 通用区块 ---------- */
.page-about .about-section {
  padding: clamp(38px, 6.5vw, 80px) 0;
  border-bottom: 1px solid var(--ab-hair-soft);
}

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

.page-about .about-section--soft {
  background:
    linear-gradient(to right, var(--ab-hair-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--ab-hair-soft) 1px, transparent 1px),
    var(--mist);
  background-size: 72px 72px, 72px 72px, auto;
  border-bottom: 0;
}

.page-about .about-head {
  display: grid;
  gap: 10px;
  max-width: 64ch;
  margin-bottom: clamp(24px, 4vw, 44px);
}

.page-about .about-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 4.6vw, 38px);
  line-height: 1.16;
  letter-spacing: -.02em;
}

.page-about .about-head p {
  margin: 0;
  font-family: var(--font-body);
  font-size: clamp(14px, 1.55vw, 16px);
  line-height: 1.9;
  color: var(--ink-70);
}

.page-about .about-inline-note {
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--cyan);
  font-size: clamp(13.5px, 1.5vw, 15px);
  line-height: 1.75;
  color: var(--ink-70);
  max-width: 62ch;
}

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

/* ---------- 时间轴 ---------- */
.page-about .about-history {
  display: grid;
  gap: clamp(28px, 5vw, 56px);
}

.page-about .about-timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 46px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 12px;
  bottom: 14px;
  width: 1px;
  background: linear-gradient(to bottom, var(--cyan), var(--blue) 58%, var(--silver));
  opacity: .5;
}

.page-about .about-node {
  position: relative;
  padding-bottom: clamp(24px, 4vw, 38px);
}

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

.page-about .about-node-dot {
  position: absolute;
  left: 0;
  top: 2px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--porcelain);
  border: 1px solid var(--silver);
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}

.page-about .about-node-dot::after {
  content: "";
  position: absolute;
  inset: 9px;
  border-radius: 50%;
  background: var(--silver);
  transition: background .2s var(--ease);
}

.page-about .about-node:hover .about-node-dot {
  border-color: var(--cyan);
  box-shadow: 0 0 0 4px rgba(24, 183, 160, .12);
}

.page-about .about-node:hover .about-node-dot::after {
  background: var(--cyan);
}

.page-about .about-node-year {
  display: inline-block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--blue);
}

.page-about .about-node h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(17px, 2.2vw, 21px);
  line-height: 1.32;
  letter-spacing: -.01em;
}

.page-about .about-node p {
  margin: 0;
  max-width: 52ch;
  font-family: var(--font-body);
  font-size: clamp(14px, 1.5vw, 15.5px);
  line-height: 1.88;
  color: var(--ink-70);
}

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

.page-about .about-history-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--ab-radius);
  object-fit: cover;
  background: var(--mist);
}

.page-about .about-history-figure figcaption {
  margin-top: 14px;
  padding-left: 14px;
  border-left: 2px solid var(--cyan);
  font-size: .74rem;
  line-height: 1.65;
  color: var(--ink-55);
}

/* ---------- 服务网络 ---------- */
.page-about .about-scenes {
  display: grid;
  gap: clamp(14px, 2.6vw, 24px);
}

.page-about .about-scene {
  display: grid;
  align-content: start;
  gap: 12px;
  padding: clamp(22px, 3.4vw, 34px);
  border-radius: var(--ab-radius);
  border: 1px solid var(--ab-hair);
  background: var(--paper);
  transition: transform .22s var(--ease), border-color .22s var(--ease);
}

.page-about .about-scene:hover {
  transform: translateY(-3px);
  border-color: var(--cyan);
}

.page-about .about-scene--dark {
  background: var(--ink);
  border-color: transparent;
  color: var(--paper);
}

.page-about .about-scene h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(18px, 2.4vw, 22px);
  letter-spacing: -.01em;
}

.page-about .about-scene p {
  margin: 0;
  font-family: var(--font-body);
  font-size: clamp(14px, 1.5vw, 15.5px);
  line-height: 1.85;
  color: var(--ink-70);
}

.page-about .about-scene--dark p {
  color: var(--paper-70);
}

.page-about .about-scene ul {
  list-style: none;
  margin: 4px 0 0;
  padding: 14px 0 0;
  display: grid;
  gap: 9px;
  border-top: 1px solid var(--ab-hair-soft);
  font-size: clamp(13.5px, 1.45vw, 14.5px);
  line-height: 1.6;
  color: var(--ink-70);
}

.page-about .about-scene--dark ul {
  border-top-color: var(--line-light-soft);
  color: var(--paper-70);
}

.page-about .about-scene ul li {
  position: relative;
  padding-left: 16px;
}

.page-about .about-scene ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 7px;
  height: 1px;
  background: var(--cyan);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(14px, 2.4vw, 22px);
}

.page-about .about-role {
  padding: clamp(20px, 3vw, 28px);
  border-radius: var(--ab-radius);
  border: 1px solid transparent;
  background: var(--mist);
  transition: border-color .2s var(--ease), transform .2s var(--ease), background .2s var(--ease);
}

.page-about .about-role:hover,
.page-about .about-role:focus-visible {
  border-color: var(--cyan);
  background: var(--paper);
  transform: translateY(-3px);
}

.page-about .about-role-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(26px, 5vw, 40px);
  font-weight: 700;
  line-height: 1;
  color: var(--blue);
  letter-spacing: -.03em;
}

.page-about .about-role-unit {
  display: block;
  margin: 6px 0 16px;
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--ink-55);
}

.page-about .about-role h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(16px, 2vw, 18.5px);
  line-height: 1.35;
}

.page-about .about-role p {
  margin: 0;
  font-family: var(--font-body);
  font-size: clamp(13.5px, 1.45vw, 14.5px);
  line-height: 1.85;
  color: var(--ink-70);
}

.page-about .about-team-note {
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: clamp(14px, 2.2vw, 20px) clamp(16px, 2.6vw, 24px);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--cyan);
  background: rgba(255, 255, 255, .7);
  font-size: clamp(13px, 1.5vw, 14.5px);
  line-height: 1.75;
  color: var(--ink-70);
}

.page-about .about-team-note .mono {
  margin-right: 10px;
  color: var(--blue);
  font-size: .74rem;
  letter-spacing: .1em;
}

/* ---------- 会馆空间 ---------- */
.page-about .about-space {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
}

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

.page-about .about-space-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--ab-radius);
  object-fit: cover;
  background: var(--silver);
}

.page-about .about-space-figure figcaption {
  margin-top: 12px;
  font-size: .74rem;
  line-height: 1.6;
  color: var(--ink-55);
}

.page-about .about-space-body h2 {
  margin: 10px 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 4.4vw, 36px);
  line-height: 1.16;
  letter-spacing: -.02em;
}

.page-about .about-space-body > p {
  margin: 0 0 20px;
  font-family: var(--font-body);
  font-size: clamp(14px, 1.55vw, 16px);
  line-height: 1.9;
  color: var(--ink-70);
}

.page-about .about-space-list {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-space-list li {
  display: grid;
  gap: 4px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--silver);
  font-family: var(--font-body);
  font-size: clamp(13.5px, 1.45vw, 14.5px);
  line-height: 1.8;
  color: var(--ink-70);
}

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

.page-about .about-space-list .mono {
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--blue);
}

.page-about .about-space-cta {
  margin: 0;
  font-size: clamp(13.5px, 1.5vw, 15px);
  color: var(--ink-70);
}

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

/* ---------- 合作生态 ---------- */
.page-about .about-partners {
  display: grid;
  gap: clamp(12px, 2vw, 18px);
  margin-bottom: clamp(24px, 4vw, 36px);
}

.page-about .about-partner {
  padding: clamp(18px, 2.6vw, 26px);
  border-radius: var(--ab-radius);
  border: 1px dashed var(--silver);
  background: rgba(255, 255, 255, .6);
  transition: border-color .2s var(--ease), background .2s var(--ease);
}

.page-about .about-partner:hover,
.page-about .about-partner[open] {
  border-color: var(--blue);
  background: var(--paper);
}

.page-about .about-partner summary {
  display: flex;
  align-items: center;
  gap: 10px;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(15px, 1.9vw, 17px);
  color: var(--ink);
}

.page-about .about-partner summary::-webkit-details-marker {
  display: none;
}

.page-about .about-partner summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1;
  color: var(--blue);
}

.page-about .about-partner[open] summary::after {
  content: "–";
}

.page-about .about-partner-tag {
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-about .about-partner-title {
  flex: 1 1 auto;
  min-width: 0;
}

.page-about .about-partner-count {
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--ink-55);
}

.page-about .about-partner p {
  margin: 14px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--ab-hair-soft);
  font-family: var(--font-body);
  font-size: clamp(13.5px, 1.45vw, 14.5px);
  line-height: 1.85;
  color: var(--ink-70);
}

.page-about .about-moments {
  display: grid;
  gap: clamp(14px, 2.4vw, 22px);
}

.page-about .about-moment {
  padding: clamp(20px, 3vw, 30px);
  border-radius: var(--ab-radius);
  background: var(--paper);
  border: 1px solid var(--ab-hair);
  display: grid;
  align-content: start;
  gap: 10px;
}

.page-about .about-moment--award {
  background: var(--ink);
  border-color: transparent;
  color: var(--paper);
}

.page-about .about-moment-tag {
  margin: 0;
  font-size: .72rem;
  letter-spacing: .12em;
  color: var(--blue);
}

.page-about .about-moment--award .about-moment-tag {
  color: var(--amber);
}

.page-about .about-moment h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(17px, 2.2vw, 21px);
  line-height: 1.32;
}

.page-about .about-moment p {
  margin: 0;
  font-family: var(--font-body);
  font-size: clamp(13.5px, 1.5vw, 15px);
  line-height: 1.85;
  color: var(--ink-70);
}

.page-about .about-moment--award p {
  color: var(--paper-70);
}

.page-about .about-moment a {
  justify-self: start;
  margin-top: 4px;
  font-size: .85rem;
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* ---------- 到馆与咨询 ---------- */
.page-about .about-visit {
  margin-top: clamp(8px, 2vw, 16px);
  padding: clamp(26px, 4.6vw, 52px);
  border-radius: clamp(16px, 2.4vw, 26px);
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(24, 183, 160, .16), transparent 58%),
    var(--ink);
  color: var(--paper);
}

.page-about .about-visit-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-about .about-visit h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 4.2vw, 34px);
  line-height: 1.16;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-about .about-visit p {
  max-width: 46ch;
  margin: 0 0 22px;
  font-family: var(--font-body);
  font-size: clamp(14px, 1.6vw, 16px);
  line-height: 1.9;
  color: var(--paper-70);
}

.page-about .about-visit-list {
  list-style: none;
  margin: 0;
  padding: clamp(16px, 2.6vw, 22px) 0 0;
  border-top: 1px solid var(--line-light-soft);
  display: grid;
  gap: 16px;
}

.page-about .about-visit-list > div {
  display: grid;
  gap: 4px;
}

.page-about .about-visit-list dt {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-about .about-visit-list dd {
  margin: 0;
  font-size: clamp(13.5px, 1.55vw, 15px);
  line-height: 1.72;
  color: var(--paper);
  overflow-wrap: anywhere;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-about .about-moments {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 760px) {
  .page-about .about-team {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .page-about .about-role:nth-child(2) {
    margin-top: 30px;
  }

  .page-about .about-role:nth-child(3) {
    margin-top: 14px;
  }
}

@media (min-width: 860px) {
  .page-about .about-scenes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-visit-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, .92fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    align-items: end;
  }

  .page-about .about-hero-figure {
    aspect-ratio: 3 / 4;
  }

  .page-about .about-hero-figure img {
    height: 100%;
  }

  .page-about .about-space {
    grid-template-columns: minmax(0, .88fr) minmax(0, 1fr);
  }
}

@media (min-width: 980px) {
  .page-about .about-history {
    grid-template-columns: minmax(0, 1fr) minmax(0, .66fr);
    align-items: start;
  }

  .page-about .about-history-figure {
    margin-top: 46px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-scene,
  .page-about .about-role,
  .page-about .about-partner,
  .page-about .about-node-dot {
    transition: none;
  }

  .page-about .about-scene:hover,
  .page-about .about-role:hover,
  .page-about .about-role:focus-visible {
    transform: none;
  }
}
<<<END>>>