.page-about {
  --about-line: rgba(217, 164, 65, 0.32);
  --about-line-soft: rgba(217, 164, 65, 0.14);
  --about-ink-soft: rgba(247, 241, 230, 0.72);
  background: var(--paper);
  color: var(--ink);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(1.25rem, 4vw, 2.25rem) 0 clamp(2.5rem, 7vw, 5rem);
  background:
    radial-gradient(115% 85% at 8% 0%, rgba(27, 91, 74, 0.95) 0%, rgba(17, 20, 23, 0) 62%),
    linear-gradient(158deg, #111417 0%, #0E3B32 100%);
  color: var(--paper);
  border-bottom: 4px solid var(--gold-deep);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(247, 241, 230, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(247, 241, 230, 0.055) 1px, transparent 1px);
  background-size: 68px 68px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), rgba(0, 0, 0, 0.15));
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), rgba(0, 0, 0, 0.15));
}

.page-about .hero-word {
  position: absolute;
  right: -0.04em;
  top: -0.16em;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(7rem, 30vw, 21rem);
  line-height: 1;
  letter-spacing: -0.06em;
  color: transparent;
  -webkit-text-stroke: 2px rgba(217, 164, 65, 0.2);
  pointer-events: none;
  user-select: none;
}

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

.page-about .about-crumbs {
  margin-bottom: clamp(1.5rem, 4vw, 2.75rem);
  color: var(--about-ink-soft);
  font-size: var(--step--1);
}

.page-about .about-crumbs a {
  color: var(--gold-light);
  text-decoration: none;
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-crumbs a:hover,
.page-about .about-crumbs a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--orange);
}

.page-about .about-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.75rem, 5vw, 3.5rem);
  align-items: start;
}

.page-about .about-hero-copy .eyebrow--light {
  color: var(--gold);
  margin-bottom: 0.85rem;
}

.page-about .about-hero-copy .h-display {
  margin: 0 0 1.15rem;
  font-size: clamp(2.15rem, 7.2vw, 4.6rem);
  line-height: 1.02;
  letter-spacing: -0.04em;
  color: var(--paper);
}

.page-about .about-hero-copy .h-display em {
  font-style: normal;
  color: var(--gold);
  text-shadow: 4px 4px 0 rgba(17, 20, 23, 0.55);
}

.page-about .about-hero-copy .lede {
  max-width: 34ch;
  color: var(--about-ink-soft);
  font-size: var(--step-1);
  line-height: 1.75;
  margin: 0 0 clamp(1.5rem, 4vw, 2.25rem);
}

.page-about .hero-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--about-line-soft);
  border: 1px solid var(--about-line);
}

.page-about .hero-facts li {
  background: rgba(17, 20, 23, 0.62);
  padding: 0.85rem 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.page-about .hero-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.35rem, 4vw, 1.9rem);
  color: var(--gold);
  line-height: 1.1;
}

.page-about .hero-label {
  font-size: var(--step--1);
  color: var(--gray);
  letter-spacing: 0.02em;
}

.page-about .about-hero-figure {
  margin: 0;
  border: 3px solid var(--gold-deep);
  box-shadow: var(--shadow-hard);
  background: linear-gradient(150deg, var(--graphite), var(--green-deep));
  transform: rotate(-1.2deg);
}

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

.page-about .about-hero-figure figcaption {
  padding: 0.7rem 0.9rem;
  font-size: var(--step--1);
  line-height: 1.6;
  color: var(--gold-light);
  background: rgba(17, 20, 23, 0.9);
  border-top: 2px solid var(--gold-deep);
}

/* ---------- 起点 ---------- */
.page-about .about-origin {
  border-bottom: 1px solid var(--line-ink);
}

.page-about .origin-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.75rem, 5vw, 3.25rem);
}

.page-about .origin-copy .eyebrow,
.page-about .values-head .eyebrow,
.page-about .team-head .eyebrow,
.page-about .honor-head .eyebrow {
  color: var(--gold-deep);
  margin-bottom: 0.7rem;
}

.page-about .origin-copy .h-section,
.page-about .values-head .h-section,
.page-about .team-head .h-section,
.page-about .honor-head .h-section {
  margin: 0 0 1.1rem;
  color: var(--ink);
}

.page-about .origin-copy .body-text {
  margin: 0 0 1rem;
  color: var(--ink-soft);
  line-height: 1.8;
}

.page-about .origin-copy .body-text:last-child {
  margin-bottom: 0;
}

.page-about .origin-aside {
  background: var(--gold-light);
  border: 3px solid var(--ink);
  box-shadow: var(--shadow-hard-sm);
  padding: clamp(1.15rem, 3.5vw, 1.75rem);
  align-self: start;
}

.page-about .aside-title {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: var(--step-2);
  font-weight: 800;
  color: var(--ink);
  line-height: 1.25;
}

.page-about .origin-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.page-about .origin-list li {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid rgba(17, 20, 23, 0.18);
}

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

.page-about .origin-k {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--step-1);
  color: var(--green-deep);
  min-width: 5.2em;
}

.page-about .origin-v {
  font-size: var(--step--1);
  color: var(--ink-soft);
  line-height: 1.55;
}

.page-about .aside-note {
  margin: 1.15rem 0 0;
  font-size: var(--step--1);
  line-height: 1.7;
  color: var(--ink);
  border-top: 2px solid var(--ink);
  padding-top: 0.85rem;
}

.page-about .inline-link {
  color: var(--green-deep);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 2px solid var(--gold-deep);
}

.page-about .inline-link:hover,
.page-about .inline-link:focus-visible {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

/* ---------- 价值观 ---------- */
.page-about .about-values {
  background: linear-gradient(180deg, var(--paper) 0%, #EFE6D6 100%);
  border-bottom: 1px solid var(--line-ink);
}

.page-about .values-head {
  max-width: 62ch;
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.page-about .values-lede {
  color: var(--ink-soft);
  line-height: 1.8;
  margin: 0;
}

.page-about .values-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-about .value-card {
  position: relative;
  border: 3px solid var(--ink);
  padding: clamp(1.1rem, 3.5vw, 1.6rem);
  box-shadow: var(--shadow-hard-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.page-about .value-card:hover,
.page-about .value-card:focus-within {
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 0 rgba(17, 20, 23, 0.55);
}

.page-about .value-card--green {
  background: var(--green-deep);
  color: var(--paper);
}

.page-about .value-card--carbon {
  background: var(--graphite);
  color: var(--paper);
}

.page-about .value-card--gold {
  background: var(--gold);
  color: var(--ink);
}

.page-about .value-index {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--step-1);
  letter-spacing: 0.12em;
  margin-bottom: 0.6rem;
  opacity: 0.72;
}

.page-about .value-card--gold .value-index {
  color: var(--green-deep);
  opacity: 1;
}

.page-about .value-title {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-size: var(--step-2);
  font-weight: 800;
  line-height: 1.25;
}

.page-about .value-desc {
  margin: 0 0 0.9rem;
  font-size: var(--step--1);
  line-height: 1.7;
  opacity: 0.86;
}

.page-about .value-detail {
  border-top: 2px solid currentColor;
  padding-top: 0.7rem;
}

.page-about .value-detail summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--step--1);
  font-weight: 600;
  letter-spacing: 0.04em;
}

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

.page-about .value-mark {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1;
  transition: transform 0.2s ease;
}

.page-about .value-detail[open] .value-mark {
  transform: rotate(45deg);
}

.page-about .value-detail .body-text {
  margin: 0.7rem 0 0;
  font-size: var(--step--1);
  line-height: 1.75;
  opacity: 0.92;
}

/* ---------- 时间轴 ---------- */
.page-about .about-track {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
  border-top: 4px solid var(--gold-deep);
  border-bottom: 4px solid var(--gold-deep);
}

.page-about .track-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.page-about .track-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-width: 100%;
  opacity: 0.22;
}

.page-about .track-inner {
  position: relative;
  z-index: 1;
}

.page-about .track-head {
  max-width: 62ch;
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.page-about .track-head .eyebrow--light {
  color: var(--gold);
  margin-bottom: 0.7rem;
}

.page-about .track-head .h-section {
  margin: 0 0 1rem;
  color: var(--paper);
}

.page-about .track-lede {
  margin: 0;
  color: var(--about-ink-soft);
  line-height: 1.8;
}

.page-about .track {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 2.1rem;
}

.page-about .track::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 0.6rem;
  bottom: 0.9rem;
  width: 3px;
  background: linear-gradient(180deg, var(--gold) 0%, rgba(217, 164, 65, 0.42) 55%, rgba(217, 164, 65, 0.08) 100%);
}

.page-about .track-item {
  position: relative;
  margin-bottom: 0.9rem;
}

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

.page-about .track-dot {
  position: absolute;
  left: -2.1rem;
  top: 1.15rem;
  width: 21px;
  height: 21px;
  border-radius: 50%;
  background: var(--ink);
  border: 3px solid var(--gold);
  box-shadow: 0 0 0 4px rgba(217, 164, 65, 0.16);
}

.page-about .track-item--now .track-dot {
  border-color: var(--orange);
  background: var(--orange);
  box-shadow: 0 0 0 5px rgba(240, 90, 40, 0.22);
}

.page-about .track-card {
  background: rgba(37, 43, 48, 0.92);
  border: 2px solid var(--about-line);
  border-left: 5px solid var(--gold);
  padding: 0.9rem 1rem;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.page-about .track-card:hover,
.page-about .track-card:focus-within {
  border-color: var(--gold);
  background: rgba(27, 91, 74, 0.55);
}

.page-about .track-item--now .track-card {
  border-left-color: var(--orange);
}

.page-about .track-card summary {
  cursor: pointer;
  list-style: none;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.7rem;
}

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

.page-about .track-year {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--step-1);
  color: var(--gold);
  letter-spacing: 0.04em;
}

.page-about .track-item--now .track-year {
  color: var(--orange);
}

.page-about .track-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--step-1);
  color: var(--paper);
  line-height: 1.4;
}

.page-about .track-mark {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  color: var(--gold);
  line-height: 1;
  transition: transform 0.2s ease;
}

.page-about .track-card[open] .track-mark {
  transform: rotate(45deg);
}

.page-about .track-card .body-text {
  margin: 0.75rem 0 0;
  padding-top: 0.7rem;
  border-top: 1px dashed var(--about-line);
  font-size: var(--step--1);
  line-height: 1.8;
  color: var(--about-ink-soft);
}

/* ---------- 团队 ---------- */
.page-about .team-head {
  max-width: 66ch;
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.page-about .team-head .body-text {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.8;
}

.page-about .team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-about .team-card {
  border: 3px solid var(--ink);
  box-shadow: var(--shadow-hard-sm);
  padding: clamp(1.1rem, 3.5vw, 1.6rem);
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.page-about .team-card--green {
  background: var(--green);
  color: var(--paper);
}

.page-about .team-card--carbon {
  background: var(--graphite);
  color: var(--paper);
}

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

.page-about .team-tag {
  align-self: flex-start;
  font-size: var(--step--1);
  letter-spacing: 0.06em;
}

.page-about .team-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--step-2);
  font-weight: 800;
  line-height: 1.25;
}

.page-about .team-card .body-text {
  margin: 0;
  font-size: var(--step--1);
  line-height: 1.75;
  opacity: 0.9;
}

.page-about .team-list {
  list-style: none;
  margin: 0.25rem 0 0;
  padding: 0.75rem 0 0;
  border-top: 1px solid currentColor;
  display: grid;
  gap: 0.4rem;
  font-size: var(--step--1);
  line-height: 1.6;
  opacity: 0.92;
}

.page-about .team-list li {
  position: relative;
  padding-left: 1rem;
}

.page-about .team-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  background: var(--orange);
}

/* ---------- 合作生态 ---------- */
.page-about .about-eco {
  background:
    radial-gradient(90% 70% at 88% 10%, rgba(27, 91, 74, 0.9) 0%, rgba(14, 59, 50, 0) 68%),
    linear-gradient(165deg, var(--green-deep) 0%, #0A2A24 100%);
  color: var(--paper);
}

.page-about .eco-head {
  max-width: 64ch;
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.page-about .eco-head .eyebrow--light {
  color: var(--gold);
  margin-bottom: 0.7rem;
}

.page-about .eco-head .h-section {
  margin: 0 0 1rem;
  color: var(--paper);
}

.page-about .eco-lede {
  margin: 0;
  color: var(--about-ink-soft);
  line-height: 1.8;
}

.page-about .eco-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.25rem, 4vw, 2.25rem);
  align-items: start;
}

.page-about .eco-visual {
  margin: 0;
  border: 3px solid var(--gold-deep);
  box-shadow: var(--shadow-hard);
  background: var(--ink);
}

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

.page-about .eco-visual figcaption {
  padding: 0.7rem 0.9rem;
  font-size: var(--step--1);
  line-height: 1.6;
  color: var(--gold-light);
  border-top: 2px solid var(--gold-deep);
  background: rgba(17, 20, 23, 0.85);
}

.page-about .eco-nodes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.page-about .eco-node {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.9rem;
  align-items: start;
  padding: 0.95rem 1rem;
  background: rgba(17, 20, 23, 0.55);
  border: 2px solid var(--about-line);
  border-left-width: 6px;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.page-about .eco-node--a {
  border-left-color: var(--gold);
}

.page-about .eco-node--b {
  border-left-color: var(--cyan);
}

.page-about .eco-node--c {
  border-left-color: var(--orange);
}

.page-about .eco-node:hover,
.page-about .eco-node:focus-within {
  transform: translateX(4px);
  background: rgba(27, 91, 74, 0.72);
  border-color: var(--gold);
}

.page-about .eco-count {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--step-2);
  line-height: 1;
  color: var(--gold);
}

.page-about .eco-name {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: var(--step-1);
  font-weight: 800;
  color: var(--paper);
  line-height: 1.3;
}

.page-about .eco-node .body-text {
  margin: 0;
  font-size: var(--step--1);
  line-height: 1.75;
  color: var(--about-ink-soft);
}

.page-about .eco-foot {
  margin: clamp(1.5rem, 4vw, 2.25rem) 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--about-line);
  max-width: 60ch;
  color: var(--about-ink-soft);
  line-height: 1.8;
}

.page-about .inline-link--gold {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.page-about .inline-link--gold:hover,
.page-about .inline-link--gold:focus-visible {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

/* ---------- 荣誉 ---------- */
.page-about .honor-head {
  max-width: 60ch;
  margin-bottom: clamp(1.25rem, 3.5vw, 2rem);
}

.page-about .honor-head .body-text {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.8;
}

.page-about .honor-rail {
  list-style: none;
  margin: 0;
  padding: 0.35rem 0 1rem;
  display: flex;
  gap: 0.9rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-about .honor-card {
  flex: 0 0 min(78vw, 19rem);
  scroll-snap-align: start;
  background: var(--ink);
  color: var(--paper);
  border: 3px solid var(--gold-deep);
  box-shadow: var(--shadow-hard-sm);
  padding: 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.page-about .honor-mark {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--step-1);
  color: var(--gold);
  letter-spacing: 0.14em;
}

.page-about .honor-name {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--step-1);
  font-weight: 800;
  line-height: 1.35;
  color: var(--gold-light);
}

.page-about .honor-card .body-text {
  margin: 0;
  font-size: var(--step--1);
  line-height: 1.7;
  color: var(--about-ink-soft);
}

/* ---------- 结尾行动 ---------- */
.page-about .about-cta {
  background: var(--ink);
  color: var(--paper);
  border-top: 4px solid var(--gold-deep);
}

.page-about .cta-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.25rem, 4vw, 2.5rem);
  align-items: center;
}

.page-about .cta-copy .eyebrow--light {
  color: var(--gold);
  margin-bottom: 0.7rem;
}

.page-about .cta-copy .h-section {
  margin: 0 0 0.9rem;
  color: var(--paper);
}

.page-about .cta-copy .body-text {
  margin: 0;
  max-width: 52ch;
  color: var(--about-ink-soft);
  line-height: 1.8;
}

.page-about .cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.page-about .cta-actions .btn {
  flex: 1 1 auto;
  min-width: 9.5rem;
  text-align: center;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .values-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .hero-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .honor-card {
    flex: 0 0 19rem;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding-bottom: clamp(3rem, 6vw, 5.5rem);
  }

  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: clamp(2rem, 4vw, 3.5rem);
    align-items: end;
  }

  .page-about .about-hero-figure {
    transform: rotate(-2deg) translateY(-0.5rem);
  }

  .page-about .origin-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.8fr);
    align-items: start;
  }

  .page-about .origin-aside {
    margin-top: 0.5rem;
  }

  .page-about .team-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
    gap: 1.25rem;
  }

  .page-about .team-card:nth-child(2) {
    margin-top: 2.25rem;
  }

  .page-about .team-card:nth-child(3) {
    margin-top: 4.5rem;
  }

  .page-about .eco-grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: start;
  }

  .page-about .cta-inner {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  }

  .page-about .cta-actions {
    justify-content: flex-end;
    flex-direction: column;
    align-items: stretch;
  }

  .page-about .track {
    padding-left: 2.6rem;
  }

  .page-about .track-dot {
    left: -2.6rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .value-card,
  .page-about .eco-node,
  .page-about .value-mark,
  .page-about .track-mark {
    transition: none;
  }

  .page-about .value-card:hover,
  .page-about .value-card:focus-within,
  .page-about .eco-node:hover,
  .page-about .eco-node:focus-within {
    transform: none;
  }
}
<<<END>>>