.page-about {
  --about-gap: clamp(20px, 3vw, 32px);
  --about-vspace: clamp(44px, 6vw, 76px);
  position: relative;
  overflow-x: clip;
}

.page-about .breadcrumb {
  padding-top: clamp(18px, 3vw, 28px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  padding: clamp(20px, 4vw, 40px) 0 clamp(44px, 6vw, 72px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  z-index: 0;
  top: -12%;
  right: -10%;
  width: min(440px, 62vw);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle at 42% 44%, rgba(242, 160, 61, 0.24), rgba(242, 160, 61, 0) 68%);
  pointer-events: none;
}

.page-about .about-hero-copy,
.page-about .about-hero-figure {
  position: relative;
  z-index: 1;
}

@media (min-width: 940px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: center;
    gap: clamp(32px, 4vw, 60px);
  }
}

.page-about .about-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-about .about-hero-lead {
  margin: 20px 0 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.9;
  color: var(--ink);
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .about-hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-hero-facts li {
  display: flex;
  align-items: baseline;
  gap: 6px;
  padding: 8px 15px;
  border-radius: var(--radius-pill);
  background: var(--white);
  border: 1px solid var(--line);
}

.page-about .about-hero-facts strong {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}

.page-about .about-hero-facts span {
  font-size: 12px;
  color: var(--slate);
}

.page-about .about-hero-figure {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(155deg, rgba(255, 217, 160, 0.55), rgba(127, 191, 178, 0.32));
  box-shadow: var(--shadow-soft);
}

.page-about .about-hero-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

/* ---------- 章节骨架 ---------- */
.page-about .about-layout {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  padding-bottom: clamp(56px, 7vw, 100px);
}

@media (min-width: 1024px) {
  .page-about .about-layout {
    grid-template-columns: 196px minmax(0, 1fr);
    gap: clamp(36px, 4vw, 64px);
    align-items: start;
  }

  .page-about .about-index {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }
}

.page-about .about-index-head {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-about .about-index-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .about-index-list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--ink);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.22s var(--ease), background 0.22s var(--ease), color 0.22s var(--ease);
}

.page-about .about-index-list a span {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--amber);
}

.page-about .about-index-list a:hover {
  border-color: rgba(242, 160, 61, 0.65);
  background: rgba(255, 217, 160, 0.28);
}

@media (min-width: 1024px) {
  .page-about .about-index-list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .about-index-list a {
    border: 0;
    border-left: 2px solid var(--line);
    border-radius: 0;
    background: transparent;
    padding: 9px 0 9px 14px;
    white-space: normal;
    font-size: 14px;
  }

  .page-about .about-index-list a:hover {
    border-left-color: var(--amber);
    background: transparent;
    color: var(--ink);
  }
}

.page-about .about-sec {
  padding: var(--about-vspace) 0;
  border-top: 1px solid var(--line);
}

.page-about .about-sec:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-sec-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 16px;
  align-items: start;
  margin-bottom: var(--about-gap);
}

.page-about .about-sec-num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 600;
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: transparent;
  -webkit-text-stroke: 1.4px rgba(11, 31, 51, 0.32);
}

.page-about .about-sec-head h2 {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  line-height: 1.26;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .about-sec-lead {
  margin: 12px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--slate);
}

.page-about .about-sec .prose {
  max-width: 70ch;
}

.page-about .about-sec .prose p {
  margin: 0 0 16px;
  line-height: 1.9;
  color: var(--ink);
}

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

/* ---------- 01 起步 ---------- */
.page-about .about-sec-body--story {
  display: grid;
  gap: 24px;
}

@media (min-width: 900px) {
  .page-about .about-sec-body--story {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.8fr);
    gap: 40px;
    align-items: start;
  }
}

.page-about .about-note {
  padding: 22px 24px;
  border-radius: var(--radius-md);
  background: linear-gradient(160deg, rgba(255, 217, 160, 0.7), rgba(255, 255, 255, 0.96));
  border: 1px solid rgba(242, 160, 61, 0.35);
}

.page-about .about-note p:last-child {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--ink);
}

/* ---------- 02 服务对象 ---------- */
.page-about .about-audience {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 680px) {
  .page-about .about-audience {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-about .about-aud {
  padding: clamp(20px, 2.6vw, 28px);
  border-radius: var(--radius-md);
  background: var(--white);
  border: 1px solid var(--line);
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-about .about-aud:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft);
  border-color: rgba(242, 160, 61, 0.45);
}

.page-about .about-aud--tint {
  background: linear-gradient(155deg, rgba(255, 217, 160, 0.62), #ffffff 76%);
  border-color: rgba(242, 160, 61, 0.32);
}

.page-about .about-aud h3 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: 1.12rem;
  line-height: 1.4;
  color: var(--ink);
}

.page-about .about-aud p {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--slate);
}

.page-about .about-aud-link {
  margin-top: 16px;
}

.page-about .about-aud-link a {
  display: inline-block;
  color: var(--ink);
  font-size: 13.5px;
  text-decoration: none;
  border-bottom: 1px solid var(--amber);
  padding-bottom: 2px;
}

.page-about .about-aud-link a:hover {
  color: #a9661a;
  border-bottom-color: #a9661a;
}

/* ---------- 03 内容体系 ---------- */
.page-about .about-system {
  padding: clamp(24px, 3.4vw, 40px);
  border-radius: var(--radius-lg);
  background: linear-gradient(155deg, var(--ink), var(--ink-2));
  border: 1px solid rgba(244, 241, 234, 0.12);
  box-shadow: var(--shadow-soft);
}

.page-about .about-system p {
  margin: 0;
  font-size: 15px;
  line-height: 1.88;
}

.page-about .about-system-lead {
  max-width: 66ch;
  color: rgba(244, 241, 234, 0.88);
}

.page-about .about-system-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-system-topics li {
  padding: 6px 15px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(244, 241, 234, 0.24);
  background: rgba(244, 241, 234, 0.06);
  font-size: 13px;
  color: rgba(244, 241, 234, 0.92);
}

.page-about .about-system-topics li:nth-child(-n + 2) {
  border-color: rgba(242, 160, 61, 0.55);
  color: var(--amber-soft);
}

.page-about .about-metrics {
  display: grid;
  gap: 12px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 640px) {
  .page-about .about-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-about .about-metrics {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .about-metric {
  padding: 20px;
  border-radius: var(--radius-md);
  background: var(--white);
  border: 1px solid var(--line);
}

.page-about .about-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.4vw, 34px);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-about .about-metric-label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
}

.page-about .about-metric p {
  margin: 10px 0 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--slate);
}

/* ---------- 04 发展节点 ---------- */
.page-about .about-timeline-figure {
  margin: 0 0 clamp(24px, 3vw, 34px);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(150deg, rgba(127, 191, 178, 0.28), rgba(244, 241, 234, 0.9));
}

.page-about .about-timeline-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 1000 / 420;
  object-fit: cover;
}

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

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--amber), rgba(127, 191, 178, 0.9));
}

.page-about .about-tl {
  position: relative;
  padding: 0 0 26px 36px;
}

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

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: 0;
  top: 5px;
  width: 16px;
  height: 16px;
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--white);
  border: 2px solid var(--amber);
  transition: transform 0.22s var(--ease), background 0.22s var(--ease);
}

.page-about .about-tl:last-child::before {
  background: var(--celadon);
  border-color: var(--celadon);
}

.page-about .about-tl:hover::before {
  transform: scale(1.18);
}

.page-about .about-tl-year {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--slate);
}

.page-about .about-tl h3 {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-size: 1.05rem;
  line-height: 1.4;
  color: var(--ink);
}

.page-about .about-tl p:last-child {
  margin: 8px 0 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.82;
  color: var(--slate);
}

@media (min-width: 1080px) {
  .page-about .about-tl {
    padding-left: 42px;
  }

  .page-about .about-tl p:last-child {
    font-size: 14.5px;
  }
}

/* ---------- 05 团队与保障 ---------- */
.page-about .about-team {
  display: grid;
  gap: 24px;
}

@media (min-width: 860px) {
  .page-about .about-team {
    grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
    gap: 36px;
    align-items: center;
  }
}

.page-about .about-team-figure {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(150deg, rgba(255, 217, 160, 0.5), rgba(127, 191, 178, 0.3));
}

.page-about .about-team-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-about .about-team-copy p {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--ink);
}

.page-about .about-team-roles {
  display: grid;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 560px) {
  .page-about .about-team-roles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-about .about-team-roles li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: var(--white);
  border: 1px solid var(--line);
}

.page-about .about-team-roles .about-team-total {
  grid-column: 1 / -1;
  background: linear-gradient(140deg, rgba(255, 217, 160, 0.75), #ffffff 85%);
  border-color: rgba(242, 160, 61, 0.38);
}

.page-about .about-role-num {
  font-family: var(--font-mono);
  font-size: 21px;
  font-weight: 600;
  line-height: 1;
  color: var(--amber);
}

.page-about .about-team-roles .about-team-total .about-role-num {
  color: var(--ink);
}

.page-about .about-team-roles li span:last-child {
  font-size: 13.5px;
  color: var(--slate);
}

.page-about .about-guards {
  display: grid;
  gap: 12px;
  margin: clamp(24px, 3vw, 34px) 0 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 680px) {
  .page-about .about-guards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-about .about-guard {
  padding: 20px 22px;
  border-radius: var(--radius-md);
  background: linear-gradient(150deg, rgba(127, 191, 178, 0.2), rgba(255, 255, 255, 0.95));
  border: 1px solid rgba(127, 191, 178, 0.42);
}

.page-about .about-guard h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1rem;
  line-height: 1.4;
  color: var(--ink);
}

.page-about .about-guard p {
  margin: 8px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--slate);
}

/* ---------- 06 合作生态 ---------- */
.page-about .about-partners-lead {
  margin: 0;
  max-width: 70ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--ink);
}

.page-about .about-partners-stats {
  display: grid;
  gap: 12px;
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 720px) {
  .page-about .about-partners-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .about-partners-stats li {
  padding: 20px 22px;
  border-radius: var(--radius-md);
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 3px solid var(--amber);
}

.page-about .about-partners-stats .about-num {
  font-size: clamp(24px, 3vw, 30px);
}

.page-about .about-partners-stats span:last-child {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: var(--slate);
}

/* ---------- 07 从这里开始 ---------- */
.page-about .about-next-links {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 720px) {
  .page-about .about-next-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-about .about-next-links a {
  display: block;
  padding: 20px 22px;
  border-radius: var(--radius-md);
  background: var(--white);
  border: 1px solid var(--line);
  text-decoration: none;
  transition: transform 0.22s var(--ease), box-shadow 0.22s var(--ease), border-color 0.22s var(--ease);
}

.page-about .about-next-links a:hover {
  transform: translateY(-2px);
  border-color: rgba(242, 160, 61, 0.55);
  box-shadow: var(--shadow-soft);
}

.page-about .about-next-links strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.02rem;
  color: var(--ink);
}

.page-about .about-next-links span {
  display: block;
  margin-top: 6px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--slate);
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-aud,
  .page-about .about-next-links a,
  .page-about .about-index-list a,
  .page-about .about-tl::before {
    transition: none;
  }

  .page-about .about-aud:hover,
  .page-about .about-next-links a:hover,
  .page-about .about-tl:hover::before {
    transform: none;
  }
}
<<<PAGE_CSS_END>>>