.page-about {
  background: var(--warm);
  color: var(--text);
  padding-bottom: clamp(56px, 9vw, 112px);
}

.page-about .about-crumbs {
  padding-top: clamp(18px, 3vw, 30px);
  font-size: var(--fs-sm);
  color: rgba(36, 28, 26, .62);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-block: clamp(22px, 3.4vw, 40px) clamp(46px, 7vw, 84px);
  background:
    radial-gradient(115% 88% at 102% -6%, rgba(192, 52, 43, .13), transparent 58%),
    radial-gradient(90% 70% at -8% 108%, rgba(212, 162, 76, .14), transparent 62%);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(30px, 5vw, 58px);
  align-items: end;
}

.page-about .about-hero__eyebrow,
.page-about .about-hero__copy .eyebrow {
  margin-bottom: 14px;
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 5.2vw, 3.6rem);
  line-height: 1.16;
  letter-spacing: -.02em;
  color: var(--ink);
  margin: 0 0 clamp(18px, 2.6vw, 26px);
  max-width: 15em;
}

.page-about .about-hero__copy .lead {
  color: rgba(36, 28, 26, .82);
  max-width: 40em;
}

.page-about .about-facts {
  list-style: none;
  margin: clamp(24px, 3.6vw, 36px) 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
  gap: 1px;
  background: var(--gold-24);
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--gold-24);
}

.page-about .about-facts li {
  background: var(--warm);
  padding: 15px 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-facts__k {
  font-size: var(--fs-xs);
  letter-spacing: .1em;
  color: rgba(36, 28, 26, .58);
}

.page-about .about-facts__v {
  font-family: var(--font-mono);
  font-size: var(--fs-md);
  color: var(--cinnabar);
  line-height: 1.2;
}

.page-about .about-hero__actions {
  gap: 12px;
}

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

.page-about .about-note {
  writing-mode: vertical-rl;
  font-size: var(--fs-xs);
  letter-spacing: .34em;
  color: var(--cinnabar);
  margin: 0 0 12px auto;
  display: block;
  text-align: right;
}

.page-about .about-hero__figure {
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--ink);
  box-shadow: 0 18px 48px -28px rgba(20, 16, 15, .55);
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 11 / 8;
  object-fit: cover;
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, .85fr);
    gap: clamp(36px, 5vw, 66px);
  }
}

/* ---------- 通用小标题区 ---------- */
.page-about .about-head {
  max-width: 46em;
}

.page-about .about-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.2vw, 2.35rem);
  line-height: 1.24;
  letter-spacing: -.015em;
  color: var(--ink);
  margin: 10px 0 16px;
}

.page-about .about-head__prose p {
  margin: 0;
  color: rgba(36, 28, 26, .8);
}

/* ---------- 分段切换 ---------- */
.page-about .about-segmented {
  margin-top: clamp(26px, 4vw, 42px);
}

.page-about .about-tablist {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: clamp(18px, 2.4vw, 26px);
}

.page-about .about-tab {
  appearance: none;
  font: inherit;
  font-size: var(--fs-sm);
  cursor: pointer;
  border: 1px solid var(--gold-45);
  background: transparent;
  color: var(--text);
  border-radius: var(--pill);
  padding: 10px 20px;
  transition: background-color .18s ease, color .18s ease, border-color .18s ease;
}

.page-about .about-tab:hover {
  border-color: var(--cinnabar);
  color: var(--cinnabar);
}

.page-about .about-tab[aria-selected="true"] {
  background: var(--indigo);
  border-color: var(--indigo);
  color: var(--rice);
}

.page-about .about-tab:focus-visible {
  outline: 2px solid var(--cinnabar);
  outline-offset: 3px;
}

.page-about .about-panel {
  background: #FFFCF5;
  border: 1px solid var(--gold-24);
  border-radius: var(--r-lg);
  padding: clamp(22px, 3.4vw, 40px);
  box-shadow: 0 14px 40px -34px rgba(20, 16, 15, .6);
}

.page-about .about-panel h3 {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  color: var(--ink);
  margin: 0 0 14px;
  line-height: 1.32;
}

.page-about .about-panel p {
  margin: 0 0 18px;
  color: rgba(36, 28, 26, .84);
  max-width: 42em;
}

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

.page-about .about-points li {
  position: relative;
  padding-left: 22px;
  font-size: var(--fs-sm);
  line-height: 1.8;
  color: rgba(36, 28, 26, .76);
}

.page-about .about-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--gold);
}

/* ---------- 横向数据带 ---------- */
.page-about .about-band {
  background:
    linear-gradient(120deg, rgba(59, 42, 90, .55), transparent 62%),
    var(--teal);
  margin-block: clamp(44px, 7vw, 88px);
  padding-block: clamp(34px, 5vw, 60px);
}

.page-about .about-band__inner {
  display: grid;
  gap: clamp(22px, 3vw, 36px);
}

.page-about .about-band__item {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-about .about-band__num {
  font-family: var(--font-mono);
  font-size: clamp(2.1rem, 5.4vw, 3.4rem);
  line-height: 1;
  color: var(--gold);
  letter-spacing: -.01em;
}

.page-about .about-band__label {
  font-size: var(--fs-sm);
  color: var(--rice-88);
  letter-spacing: .06em;
}

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

  .page-about .about-band__item + .about-band__item {
    border-left: 1px solid var(--gold-45);
    padding-left: clamp(22px, 3vw, 44px);
  }

  .page-about .about-band__item:first-child {
    padding-right: clamp(16px, 2vw, 28px);
  }
}

/* ---------- 团队 ---------- */
.page-about .about-team-intro {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
  align-items: center;
}

.page-about .about-team__figure {
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--ink-2);
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 18 / 13;
  object-fit: cover;
}

.page-about .about-team__figure .media-frame__caption {
  font-size: var(--fs-xs);
  color: rgba(36, 28, 26, .6);
  padding: 12px 4px 0;
}

.page-about .about-team__copy h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.2vw, 2.35rem);
  line-height: 1.24;
  color: var(--ink);
  margin: 10px 0 16px;
}

.page-about .about-team__copy p {
  margin: 0;
  color: rgba(36, 28, 26, .8);
}

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

.page-about .about-team-cards {
  margin-top: clamp(28px, 4vw, 46px);
  display: grid;
  gap: 16px;
}

.page-about .about-team-card {
  border-radius: var(--r-md);
  padding: clamp(20px, 2.4vw, 26px);
  color: var(--rice);
  background: var(--ink);
  border: 1px solid rgba(235, 217, 180, .16);
}

.page-about .about-team-card--wine {
  background: var(--wine);
  border-color: rgba(235, 217, 180, .2);
}

.page-about .about-team-card--teal {
  background: var(--teal);
  border-color: rgba(235, 217, 180, .2);
}

.page-about .about-team-card--celadon {
  background: var(--celadon);
  color: var(--ink);
  border-color: rgba(20, 16, 15, .14);
}

.page-about .about-team-card--ink {
  background: var(--ink);
}

.page-about .about-team-card summary {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  font-family: var(--font-display);
  font-size: var(--fs-md);
  font-weight: 700;
  letter-spacing: -.005em;
}

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

.page-about .about-team-card summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  font-weight: 400;
  color: var(--gold);
  margin-top: 8px;
}

.page-about .about-team-card--celadon summary::after {
  color: var(--wine);
}

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

.page-about .about-team-card summary:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 4px;
  border-radius: var(--r-sm);
}

.page-about .about-team-card p {
  margin: 12px 0 0;
  font-size: var(--fs-sm);
  line-height: 1.86;
  color: var(--rice-88);
}

.page-about .about-team-card--celadon p {
  color: rgba(20, 16, 15, .84);
}

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

@media (min-width: 1000px) {
  .page-about .about-team-cards {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 纵向时间轴 ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: clamp(32px, 5vw, 56px) 0 0;
  padding: 0 0 0 30px;
  position: relative;
  display: grid;
  gap: clamp(26px, 4vw, 46px);
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--gold-45), rgba(212, 162, 76, .06));
}

.page-about .about-timeline__item {
  position: relative;
  display: grid;
  gap: 14px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -22px;
  top: 9px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--cinnabar);
  box-shadow: 0 0 0 4px rgba(247, 242, 232, 1);
}

.page-about .about-timeline__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-about .about-timeline__num {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: .08em;
  color: var(--gold);
  background: var(--ink);
  border-radius: var(--pill);
  padding: 4px 12px;
}

.page-about .about-timeline__meta h3 {
  flex-basis: 100%;
  margin: 4px 0 0;
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  line-height: 1.3;
  color: var(--ink);
}

.page-about .about-timeline__body p {
  margin: 0;
  max-width: 40em;
  color: rgba(36, 28, 26, .82);
}

@media (min-width: 860px) {
  .page-about .about-timeline {
    padding-left: 40px;
  }

  .page-about .about-timeline::before {
    left: 14px;
  }

  .page-about .about-timeline__item {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: clamp(20px, 4vw, 56px);
    align-items: start;
  }

  .page-about .about-timeline__meta {
    position: sticky;
    top: 108px;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .page-about .about-timeline__meta h3 {
    flex-basis: auto;
  }
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners {
  display: grid;
  gap: clamp(26px, 4vw, 54px);
  align-items: center;
}

.page-about .about-partners__figure {
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--ink);
}

.page-about .about-partners__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
}

.page-about .about-partners__copy h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.2vw, 2.35rem);
  line-height: 1.24;
  color: var(--ink);
  margin: 10px 0 16px;
}

.page-about .about-partners__copy p {
  margin: 0 0 22px;
  max-width: 38em;
  color: rgba(36, 28, 26, .8);
}

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

.page-about .about-nodes li {
  border: 1px solid var(--gold-45);
  background: rgba(212, 162, 76, .1);
  border-radius: var(--pill);
  padding: 9px 18px;
  font-size: var(--fs-sm);
  color: rgba(36, 28, 26, .84);
}

@media (min-width: 900px) {
  .page-about .about-partners {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  }
}

/* ---------- 交付节奏 ---------- */
.page-about .about-steps {
  list-style: none;
  margin: clamp(28px, 4vw, 46px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(14px, 2vw, 24px);
  align-items: start;
  padding: clamp(18px, 2.4vw, 26px);
  border-radius: var(--r-md);
  background: #FFFCF5;
  border: 1px solid var(--gold-24);
}

.page-about .about-step__n {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--cinnabar);
  padding-right: clamp(12px, 1.6vw, 20px);
  border-right: 1px solid var(--gold-24);
  line-height: 1.6;
}

.page-about .about-step__body h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: var(--fs-md);
  color: var(--ink);
  line-height: 1.32;
}

.page-about .about-step__body p {
  margin: 0;
  font-size: var(--fs-sm);
  line-height: 1.86;
  color: rgba(36, 28, 26, .76);
  max-width: 44em;
}

.page-about .about-cta {
  margin-top: clamp(30px, 4.6vw, 54px);
  display: grid;
  gap: 20px;
  border-radius: var(--r-lg);
  padding: clamp(24px, 3.6vw, 42px);
}

.page-about .about-cta h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  line-height: 1.32;
  color: var(--ink);
}

.page-about .about-cta p {
  margin: 0;
  max-width: 40em;
  color: rgba(36, 28, 26, .78);
  font-size: var(--fs-sm);
  line-height: 1.86;
}

.page-about .about-cta__actions {
  gap: 12px;
}

@media (min-width: 760px) {
  .page-about .about-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: clamp(24px, 4vw, 48px);
  }

  .page-about .about-cta__actions {
    flex-direction: column;
    align-items: stretch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-tab {
    transition: none;
  }
}
<<<END>>>