.page-about {
  background: var(--ink-green);
  color: var(--paper);
  overflow-x: clip;
}

.page-about img {
  max-width: 100%;
}

.page-about p a,
.page-about li a,
.page-about figcaption a {
  color: var(--gold);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: clamp(24px, 4vw, 48px) 0 clamp(36px, 6vw, 84px);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(53, 224, 200, 0.10), transparent 62%),
    radial-gradient(90% 80% at 0% 100%, rgba(232, 180, 90, 0.09), transparent 62%),
    var(--ink-green);
  border-bottom: 1px solid var(--line);
}

.page-about .breadcrumbs {
  margin-bottom: clamp(18px, 3vw, 34px);
}

.page-about .breadcrumbs,
.page-about .breadcrumbs a {
  color: var(--mist);
  font-size: 12.5px;
  letter-spacing: 0.06em;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 52px);
}

.page-about .about-hero h1 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(30px, 5.4vw, 58px);
  line-height: 1.12;
  letter-spacing: -0.03em;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-hero__lede {
  margin: 18px 0 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: rgba(244, 233, 216, 0.82);
}

.page-about .about-figures {
  list-style: none;
  margin: 0;
  padding: 0 0 0 18px;
  display: grid;
  gap: 18px;
  border-left: 1px solid var(--line-strong);
}

.page-about .about-figures li {
  display: grid;
  gap: 3px;
}

.page-about .about-figures__num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.4vw, 34px);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--gold);
}

.page-about .about-figures__label {
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--mist);
}

.page-about .about-index {
  margin-top: clamp(26px, 4vw, 44px);
}

.page-about .about-index ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
}

.page-about .about-index a {
  display: inline-block;
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-about .about-index a:hover,
.page-about .about-index a:focus-visible {
  color: var(--gold);
  border-color: var(--line-strong);
  background: rgba(232, 180, 90, 0.08);
}

/* ---------- 浅色章节配色 ---------- */
.page-about .section--paper {
  color: var(--brown);
}

.page-about .section--paper .section-head__desc {
  color: rgba(26, 20, 16, 0.68);
}

.page-about .section--paper .section-head__no {
  color: var(--ember);
}

.page-about .section--paper figcaption {
  color: rgba(26, 20, 16, 0.6);
}

.page-about .about-sub {
  margin: clamp(22px, 3vw, 34px) 0 0;
  font-family: var(--font-display);
  font-size: clamp(16px, 2vw, 19px);
  letter-spacing: 0.02em;
  color: inherit;
}

/* ---------- 缘起 ---------- */
.page-about .about-origin {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-about .about-origin__text p {
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.9;
}

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

.page-about .about-origin__media {
  margin: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-origin__media figcaption,
.page-about .about-team__media figcaption,
.page-about .about-map figcaption {
  font-size: 12.5px;
  line-height: 1.7;
}

.page-about .pullquote {
  margin: clamp(24px, 4vw, 42px) 0 0;
  max-width: 46ch;
  font-family: var(--font-serif);
}

/* ---------- 时间线 ---------- */
.page-about .about-tl {
  list-style: none;
  position: relative;
  margin: clamp(24px, 4vw, 42px) 0 0;
  padding: 0 0 0 32px;
}

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 8px;
  bottom: 14px;
  width: 1px;
  background: linear-gradient(180deg, var(--gold) 0%, rgba(232, 180, 90, 0.34) 55%, rgba(232, 180, 90, 0.08) 100%);
}

.page-about .about-tl__node {
  position: relative;
}

.page-about .about-tl__node::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 16px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink-blue);
  border: 1px solid var(--gold);
  transition: background 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-about .about-tl__node:has(details[open])::before {
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(232, 180, 90, 0.14);
}

.page-about .about-tl details {
  border-bottom: 1px solid var(--line);
}

.page-about .about-tl summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr) 18px;
  align-items: center;
  gap: 10px;
  padding: 14px 0 13px;
}

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

.page-about .about-tl summary::after {
  content: "+";
  justify-self: end;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--gold);
}

.page-about .about-tl details[open] summary::after {
  content: "−";
}

.page-about .about-tl summary:focus-visible {
  outline: 1px solid var(--neon);
  outline-offset: 4px;
}

.page-about .about-tl__year {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-about .about-tl__title {
  font-size: 15.5px;
  line-height: 1.5;
  color: var(--paper);
}

.page-about .about-tl details p {
  margin: 0 0 16px;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(244, 233, 216, 0.76);
}

/* ---------- 城市节点图 ---------- */
.page-about .about-map {
  margin: clamp(26px, 4vw, 44px) 0 0;
}

.page-about .about-map__frame {
  padding: clamp(8px, 2vw, 20px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(80% 90% at 62% 28%, rgba(53, 224, 200, 0.08), transparent 70%),
    rgba(11, 31, 26, 0.55);
}

.page-about .about-map svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-map__links path {
  fill: none;
  stroke: rgba(168, 179, 173, 0.26);
  stroke-width: 1;
  stroke-dasharray: 3 5;
}

.page-about .about-map .city circle {
  fill: rgba(11, 31, 26, 0.92);
  stroke: var(--neon);
  stroke-width: 1.3;
  transition: fill 0.22s var(--ease), stroke 0.22s var(--ease), r 0.22s var(--ease);
}

.page-about .about-map .city:hover circle {
  fill: var(--gold);
  stroke: var(--gold);
  r: 7;
}

.page-about .about-map .city__name {
  fill: rgba(244, 233, 216, 0.86);
  font-family: var(--font-body);
  font-size: 16px;
  letter-spacing: 0.04em;
}

.page-about .about-map .city__num {
  fill: var(--gold);
  font-family: var(--font-mono);
  font-size: 15px;
}

.page-about .about-map .city:hover .city__num {
  fill: var(--amber);
}

.page-about .about-map figcaption {
  margin-top: 10px;
  color: var(--mist);
}

/* ---------- 团队 ---------- */
.page-about .about-team-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
  margin-top: clamp(18px, 3vw, 28px);
}

.page-about .about-team-layout__main p {
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.9;
}

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

.page-about .about-team-layout__side {
  padding: clamp(16px, 2.4vw, 24px);
  border: 1px solid var(--paper-line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.32);
}

.page-about .about-team-layout__side .about-sub {
  margin-top: 0;
}

.page-about .about-team {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .about-team li {
  display: grid;
  gap: 7px;
}

.page-about .about-team__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
}

.page-about .about-team__label {
  font-size: 14px;
}

.page-about .about-team__num {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--ember);
}

.page-about .about-team__bar {
  display: block;
  position: relative;
  height: 4px;
  border-radius: 2px;
  background: rgba(26, 20, 16, 0.12);
  overflow: hidden;
}

.page-about .about-team__bar::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: var(--w, 30%);
  border-radius: 2px;
  background: linear-gradient(90deg, var(--amber), var(--rose));
}

.page-about .about-ranks {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.page-about .about-ranks li {
  position: relative;
  padding: 12px 10px;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius);
  text-align: center;
  font-family: var(--font-display);
  font-size: 15px;
  letter-spacing: 0.1em;
  background: rgba(255, 255, 255, 0.36);
}

.page-about .about-ranks__idx {
  display: block;
  margin-bottom: 5px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--ember);
}

.page-about .about-team__media {
  margin: clamp(24px, 4vw, 38px) 0 0;
  display: grid;
  gap: 10px;
}

/* ---------- 合作标准 ---------- */
.page-about .about-checks {
  list-style: none;
  margin: clamp(22px, 4vw, 36px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-checks__item {
  background: var(--ink-blue);
  padding: clamp(18px, 3vw, 30px);
  display: grid;
  gap: 8px;
  align-content: start;
}

.page-about .about-checks__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-about .about-checks__item h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.2vw, 21px);
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-about .about-checks__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(244, 233, 216, 0.76);
}

.page-about .about-checks__foot {
  margin-top: clamp(22px, 3vw, 34px);
  display: grid;
  gap: 18px;
}

.page-about .about-checks__foot p {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-checks__foot .btn {
  justify-self: start;
}

/* ---------- 行业观察 ---------- */
.page-about .about-observe {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 40px);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-about .about-observe__big {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.35;
  color: var(--brown);
}

.page-about .about-observe__text {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.9;
}

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

.page-about .about-observe__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  align-content: start;
}

.page-about .about-observe__list li {
  display: grid;
  grid-template-columns: 104px minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 14px 0;
  border-top: 1px solid var(--paper-line);
  font-size: 14.5px;
  line-height: 1.75;
}

.page-about .about-observe__list li:last-child {
  border-bottom: 1px solid var(--paper-line);
}

.page-about .about-observe__list li span:first-child {
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--ember);
}

.page-about .about-observe__list li span:last-child {
  color: rgba(26, 20, 16, 0.78);
}

/* ---------- 收束 ---------- */
.page-about .about-cta {
  margin-top: clamp(28px, 4vw, 48px);
  padding-top: clamp(20px, 3vw, 28px);
  border-top: 1px solid var(--paper-line);
  display: grid;
  gap: 16px;
}

.page-about .about-cta p {
  margin: 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(26, 20, 16, 0.72);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-ranks {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1fr) 264px;
    align-items: start;
  }

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

  .page-about .about-team-layout {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }

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

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

  .page-about .about-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  .page-about .about-team__media {
    max-width: 780px;
  }
}

@media (min-width: 1080px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1fr) 300px;
  }

  .page-about .about-tl {
    padding-left: 40px;
  }

  .page-about .about-tl::before {
    left: 12px;
  }

  .page-about .about-tl__node::before {
    left: -33px;
  }

  .page-about .about-tl summary {
    grid-template-columns: 72px minmax(0, 1fr) 18px;
  }
}

@media (max-width: 420px) {
  .page-about .about-tl {
    padding-left: 26px;
  }

  .page-about .about-tl summary {
    grid-template-columns: 50px minmax(0, 1fr) 16px;
    gap: 8px;
  }

  .page-about .about-tl__title {
    font-size: 14.5px;
  }

  .page-about .about-observe__list li {
    grid-template-columns: 82px minmax(0, 1fr);
    gap: 10px;
  }

  .page-about .about-observe__list li span:first-child {
    font-size: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}
<<<PAGE_CSS_END>>>
<<<MAIN_HTML_END>>>

.page-about {
  --w: 1rem;
}