.page-about {
  --pa-node-pad: 44px;
  --pa-line-x: 8px;
}

/* ——— 首屏 ——— */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(10px, 2vw, 28px) 0 clamp(48px, 8vw, 96px);
}

.page-about .about-hero::before,
.page-about .about-hero::after {
  content: "";
  position: absolute;
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero::before {
  right: -14%;
  top: -34%;
  width: 62%;
  height: 168%;
  background: linear-gradient(158deg, rgba(201, 242, 74, 0.13), rgba(201, 242, 74, 0) 64%);
  transform: rotate(-6deg);
}

.page-about .about-hero::after {
  left: -18%;
  bottom: -46%;
  width: 46%;
  height: 96%;
  background: linear-gradient(20deg, rgba(255, 122, 47, 0.12), rgba(255, 122, 47, 0) 70%);
  transform: rotate(5deg);
}

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

.page-about .about-eyebrow {
  margin: 0 0 clamp(14px, 2vw, 24px);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--stone);
}

.page-about .about-title {
  margin: 0;
  max-width: 18ch;
  text-wrap: balance;
}

.page-about .about-title-mark {
  display: inline-block;
  padding: 0 0.16em;
  color: var(--ink);
  background: var(--lime);
  font-family: var(--font-mono);
  font-style: normal;
  transform: rotate(-2deg);
}

.page-about .about-lede {
  margin: clamp(18px, 3vw, 30px) 0 0;
  max-width: 62ch;
}

.page-about .about-hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
  margin: clamp(30px, 5vw, 54px) 0 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border-top: 2px solid var(--line-lime);
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: clamp(14px, 2.4vw, 22px) clamp(12px, 2vw, 20px);
  background: var(--ink);
}

.page-about .about-stat-num {
  font-size: clamp(24px, 4.6vw, 40px);
  line-height: 1;
  letter-spacing: 0.01em;
  color: var(--lime);
}

.page-about .about-stat-label {
  font-size: 13px;
  color: var(--stone);
}

.page-about .about-hero-slash {
  display: block;
  height: clamp(24px, 4vw, 46px);
  margin-top: clamp(30px, 5vw, 56px);
  background: linear-gradient(96deg, rgba(105, 245, 66, 0.001) 0%, rgba(201, 242, 74, 0.22) 44%, rgba(201, 242, 74, 0) 78%);
  transform: skewY(-1.6deg);
}

/* ——— 起点 ——— */
.page-about .about-origin-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 56px);
  align-items: start;
}

.page-about .about-origin-copy .display-2 {
  margin: 10px 0 22px;
}

.page-about .about-origin-copy p {
  margin: 0 0 18px;
  max-width: 56ch;
}

.page-about .about-dropcap::first-letter {
  float: left;
  margin: 4px 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(58px, 11vw, 96px);
  line-height: 0.82;
  color: var(--lime);
  transform: rotate(-2deg);
}

.page-about .about-origin-figure {
  margin: 0;
  transform: translateY(0);
}

/* ——— 我们做的事 ——— */
.page-about .about-what-head {
  max-width: 74ch;
  margin-bottom: clamp(34px, 5vw, 56px);
}

.page-about .about-what-head .display-2 {
  margin: 10px 0 18px;
}

.page-about .about-chain {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2.2vw, 22px);
}

.page-about .about-chain-item {
  position: relative;
  padding: clamp(22px, 3vw, 30px) clamp(20px, 2.6vw, 30px) clamp(22px, 3vw, 28px);
  background: var(--ink-2);
  border-left: 3px solid var(--line-lime);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-about .about-chain-item::after {
  content: "";
  position: absolute;
  left: -3px;
  bottom: -2px;
  width: 42%;
  height: 3px;
  background: var(--lime);
  opacity: 0.5;
  transition: width var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.page-about .about-chain-item:hover,
.page-about .about-chain-item:focus-within {
  transform: translateY(-6px) rotate(-0.5deg);
  border-left-color: var(--lime);
}

.page-about .about-chain-item:hover::after,
.page-about .about-chain-item:focus-within::after {
  width: 82%;
  opacity: 1;
}

.page-about .about-chain-idx {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--lime);
}

.page-about .about-chain-item h3 {
  margin: 8px 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 2.4vw, 24px);
  color: var(--white);
}

.page-about .about-chain-item p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--stone);
}

/* ——— 时间线 ——— */
.page-about .about-tl-head {
  max-width: 74ch;
  margin-bottom: clamp(34px, 5vw, 56px);
}

.page-about .about-tl-head .display-2 {
  margin: 10px 0 18px;
}

.page-about .about-timeline {
  position: relative;
  padding-left: var(--pa-node-pad);
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: var(--pa-line-x);
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(180deg, var(--lime) 0%, rgba(201, 242, 74, 0.24) 58%, rgba(201, 242, 74, 0.05) 100%);
}

.page-about .about-node {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding-bottom: clamp(30px, 4.4vw, 48px);
}

.page-about .about-node::before {
  content: "";
  position: absolute;
  left: calc(var(--pa-line-x) - var(--pa-node-pad) - 7px);
  top: 8px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--lime);
  transition: background-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .about-node:hover::before,
.page-about .about-node:focus-within::before {
  background: var(--lime);
  transform: scale(1.16);
}

.page-about .about-node-year {
  font-size: clamp(22px, 4.4vw, 32px);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--amber);
}

.page-about .about-node-body h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(18px, 2.4vw, 23px);
  color: var(--white);
}

.page-about .about-node-body p {
  margin: 0;
  max-width: 58ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--stone);
}

/* 横向生态带 */
.page-about .about-band-row {
  padding: 0 0 clamp(30px, 4.4vw, 48px);
}

.page-about .about-band-tag {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--lime);
}

.page-about .about-band {
  display: flex;
  gap: 2px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  background: var(--line-lime);
  border-top: 2px solid var(--line-lime);
}

.page-about .about-band-item {
  flex: 0 0 auto;
  min-width: 168px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  background: var(--ink-3);
  scroll-snap-align: start;
  transition: background-color var(--dur) var(--ease);
}

.page-about .about-band-item:hover {
  background: var(--slate);
}

.page-about .about-band-num {
  font-size: clamp(19px, 2.6vw, 24px);
  color: var(--lime);
}

.page-about .about-band-word {
  font-size: 13px;
  line-height: 1.5;
  color: var(--stone);
}

.page-about .about-tl-figure {
  margin: clamp(34px, 5vw, 60px) 0 0;
}

/* ——— 团队 ——— */
.page-about .about-team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 5vw, 56px);
  align-items: start;
}

.page-about .about-team-copy .display-2 {
  margin: 10px 0 22px;
}

.page-about .about-team-copy > p {
  margin: 0 0 18px;
  max-width: 58ch;
}

.page-about .about-team-bar {
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 16px;
}

.page-about .about-team-seg {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 14px;
  align-items: baseline;
  transition: transform var(--dur) var(--ease);
}

.page-about .about-team-seg:hover,
.page-about .about-team-seg:focus-within {
  transform: translateX(6px);
}

.page-about .about-team-name {
  font-size: 14.5px;
  color: var(--white);
}

.page-about .about-team-count {
  font-size: 14px;
  color: var(--amber);
}

.page-about .about-team-track {
  grid-column: 1 / -1;
  display: block;
  height: 10px;
  background: var(--ink-2);
  overflow: hidden;
}

.page-about .about-team-fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--lime), rgba(201, 242, 74, 0.42));
  transition: filter var(--dur) var(--ease);
}

.page-about .about-team-seg--tech { --seg-w: 38.24%; }
.page-about .about-team-seg--ops { --seg-w: 32.35%; }
.page-about .about-team-seg--care { --seg-w: 29.41%; }

.page-about .about-team-fill {
  width: var(--seg-w, 0);
}

.page-about .about-team-seg:hover .about-team-fill {
  filter: brightness(1.18);
}

.page-about .about-team-figure {
  margin: 0;
  transform: translateY(0);
}

/* ——— 合作生态 ——— */
.page-about .about-partners-head {
  max-width: 74ch;
  margin-bottom: clamp(32px, 5vw, 52px);
}

.page-about .about-partners-head .display-2 {
  margin: 10px 0 18px;
}

.page-about .about-partner-map {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2vw, 20px);
}

.page-about .about-partner-card {
  display: block;
  padding: clamp(22px, 3vw, 30px) clamp(20px, 2.6vw, 30px);
  background: var(--ink-2);
  border-bottom: 3px solid transparent;
  text-decoration: none;
  color: inherit;
  transition: transform var(--dur) var(--ease), background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-partner-card:hover,
.page-about .about-partner-card:focus-visible {
  transform: translateY(-6px) rotate(-0.5deg);
  background: var(--ink-3);
  border-bottom-color: var(--orange);
}

.page-about .about-partner-tag {
  display: inline-block;
  padding: 4px 10px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink);
  background: var(--lime);
}

.page-about .about-partner-card h3 {
  margin: 14px 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(18px, 2.3vw, 22px);
  color: var(--white);
}

.page-about .about-partner-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.76;
  color: var(--stone);
}

.page-about .about-partner-cta {
  margin-top: clamp(30px, 4.5vw, 48px);
  padding: clamp(22px, 3vw, 32px);
  background: var(--paper);
  color: var(--ink);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.page-about .about-partner-cta p {
  margin: 0;
  flex: 1 1 320px;
  font-size: 15.5px;
  line-height: 1.75;
}

/* ——— 为什么选我们 ——— */
.page-about .about-why-head {
  margin-bottom: clamp(30px, 4.5vw, 48px);
}

.page-about .about-why-head .display-2 {
  margin: 10px 0 0;
}

.page-about .about-why-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2vw, 20px);
}

.page-about .about-why-card {
  padding: clamp(22px, 3vw, 30px);
  background: var(--ink-2);
  border-top: 2px solid var(--line-lime);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-why-card:hover,
.page-about .about-why-card:focus-within {
  transform: translateY(-6px) rotate(-0.5deg);
  border-top-color: var(--lime);
}

.page-about .about-why-num {
  display: block;
  font-size: clamp(30px, 5vw, 46px);
  line-height: 1;
  color: var(--lime);
}

.page-about .about-why-card h3 {
  margin: 14px 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(17px, 2.2vw, 21px);
  color: var(--white);
}

.page-about .about-why-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.76;
  color: var(--stone);
}

.page-about .about-why-links {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  margin-top: clamp(30px, 4.5vw, 48px);
  border-top: 2px solid var(--line-lime);
  background: var(--line);
}

.page-about .about-why-link {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 16px;
  padding: 18px 20px;
  background: var(--ink);
  text-decoration: none;
  color: var(--white);
  transition: background-color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.page-about .about-why-link:hover,
.page-about .about-why-link:focus-visible {
  background: var(--ink-3);
  padding-left: 28px;
}

.page-about .about-why-link-key {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--lime);
}

.page-about .about-why-link-val {
  font-size: 15.5px;
  color: var(--white);
}

/* ——— 响应式 ——— */
@media (min-width: 640px) {
  .page-about .about-hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

  .page-about .about-partner-card:nth-child(even) {
    transform: translateY(26px);
  }

  .page-about .about-partner-card:nth-child(even):hover,
  .page-about .about-partner-card:nth-child(even):focus-visible {
    transform: translateY(20px) rotate(-0.5deg);
  }

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

  .page-about .about-why-card:nth-child(even) {
    transform: translateY(22px);
  }

  .page-about .about-why-card:nth-child(even):hover,
  .page-about .about-why-card:nth-child(even):focus-within {
    transform: translateY(16px) rotate(-0.5deg);
  }

  .page-about .about-why-links {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 800px) {
  .page-about .about-origin-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-about .about-origin-figure {
    transform: translateY(34px);
  }

  .page-about .about-node {
    grid-template-columns: 148px minmax(0, 1fr);
    gap: 30px;
  }

  .page-about .about-node::before {
    top: 10px;
  }

  .page-about .about-team-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }

  .page-about .about-team-figure {
    transform: translateY(40px);
  }
}

@media (min-width: 1024px) {
  .page-about .about-chain {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-chain-item:nth-child(2) {
    transform: translateY(22px);
  }

  .page-about .about-chain-item:nth-child(2):hover,
  .page-about .about-chain-item:nth-child(2):focus-within {
    transform: translateY(16px) rotate(-0.5deg);
  }

  .page-about .about-chain-item:nth-child(4) {
    transform: translateY(16px);
  }

  .page-about .about-chain-item:nth-child(4):hover,
  .page-about .about-chain-item:nth-child(4):focus-within {
    transform: translateY(10px) rotate(-0.5deg);
  }

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

  .page-about .about-partner-card:nth-child(2) {
    transform: translateY(38px);
  }

  .page-about .about-partner-card:nth-child(2):hover,
  .page-about .about-partner-card:nth-child(2):focus-visible {
    transform: translateY(32px) rotate(-0.5deg);
  }

  .page-about .about-partner-card:nth-child(3) {
    transform: translateY(14px);
  }

  .page-about .about-partner-card:nth-child(3):hover,
  .page-about .about-partner-card:nth-child(3):focus-visible {
    transform: translateY(8px) rotate(-0.5deg);
  }

  .page-about .about-partner-card:nth-child(4) {
    transform: translateY(52px);
  }

  .page-about .about-partner-card:nth-child(4):hover,
  .page-about .about-partner-card:nth-child(4):focus-visible {
    transform: translateY(46px) rotate(-0.5deg);
  }

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

  .page-about .about-why-card:nth-child(2) {
    transform: translateY(28px);
  }

  .page-about .about-why-card:nth-child(2):hover,
  .page-about .about-why-card:nth-child(2):focus-within {
    transform: translateY(22px) rotate(-0.5deg);
  }

  .page-about .about-why-card:nth-child(4) {
    transform: translateY(28px);
  }

  .page-about .about-why-card:nth-child(4):hover,
  .page-about .about-why-card:nth-child(4):focus-within {
    transform: translateY(22px) rotate(-0.5deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-chain-item,
  .page-about .about-partner-card,
  .page-about .about-why-card,
  .page-about .about-team-seg,
  .page-about .about-node::before,
  .page-about .about-why-link {
    transition: none !important;
  }

  .page-about .about-origin-figure,
  .page-about .about-team-figure {
    transform: none !important;
  }
}
<<<END>>>