.page-about {
  --about-panel: rgba(11, 42, 30, 0.72);
  --about-panel-soft: rgba(11, 42, 30, 0.42);
  --about-edge: rgba(185, 199, 192, 0.16);
  --about-edge-strong: rgba(185, 199, 192, 0.32);
  --about-radius: clamp(18px, 3vw, 28px);
  overflow-x: clip;
}

.page-about .about-crumb {
  padding-top: clamp(84px, 13vw, 112px);
  margin-bottom: clamp(10px, 2vw, 20px);
}

.page-about .about-head {
  margin-bottom: clamp(28px, 5vw, 52px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: clamp(8px, 2vw, 20px);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(28px, 5vw, 52px);
  align-items: end;
}

.page-about .about-hero__lead {
  display: flex;
  flex-direction: column;
  gap: clamp(14px, 2vw, 22px);
}

.page-about .about-hero__lead .kicker {
  color: var(--neon-450);
}

.page-about .about-hero__lead .display-title {
  margin: 0;
  font-size: clamp(2.2rem, 7.4vw, 4.6rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--silver-100);
  font-weight: 800;
}

.page-about .about-hero__accent {
  display: inline-block;
  color: var(--volt-500);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

.page-about .about-hero__media {
  border-radius: var(--about-radius);
  overflow: hidden;
  border: 1px solid var(--about-edge);
  background: var(--turf-800);
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(36px, 6vw, 64px) 0 0;
  padding: 0;
  background: var(--about-edge);
  border: 1px solid var(--about-edge);
  border-radius: var(--about-radius);
  overflow: hidden;
}

.page-about .about-hero__stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: clamp(16px, 3vw, 26px);
  background: var(--night-900);
}

.page-about .about-hero__stat .stat-label {
  font-size: var(--fs-100);
  letter-spacing: 0.14em;
  color: var(--silver-300);
  text-transform: uppercase;
}

.page-about .about-hero__stat .stat-value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.6rem, 4.6vw, 2.5rem);
  font-weight: 400;
  line-height: 1;
  color: var(--neon-450);
  letter-spacing: -0.02em;
}

.page-about .about-hero__stat:last-child:nth-child(odd) {
  grid-column: span 2;
}

/* ---------- 起点 ---------- */
.page-about .about-origin__grid {
  display: grid;
  gap: clamp(26px, 4.5vw, 48px);
}

.page-about .about-origin__prose p {
  margin: 0 0 1.1em;
  font-size: var(--fs-300);
  line-height: 1.8;
  color: var(--silver-300);
}

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

.page-about .about-origin__prose p:first-child::first-letter {
  font-size: 2.6em;
  line-height: 0.9;
  float: left;
  padding: 0.08em 0.14em 0 0;
  color: var(--volt-500);
  font-family: var(--font-display);
}

.page-about .about-origin__aside {
  padding: clamp(20px, 3.4vw, 32px);
  border-radius: var(--about-radius);
  background: linear-gradient(160deg, var(--about-panel), rgba(5, 16, 11, 0.9));
  border: 1px solid var(--about-edge);
}

.page-about .about-origin__aside-label {
  margin: 0 0 18px;
  font-size: var(--fs-100);
  letter-spacing: 0.16em;
  color: var(--neon-450);
}

.page-about .about-origin__list {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-about .about-origin__list li {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--about-edge);
}

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

.page-about .about-origin__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.5rem, 4vw, 2.1rem);
  line-height: 1;
  color: var(--silver-100);
  letter-spacing: -0.02em;
}

.page-about .about-origin__desc {
  font-size: var(--fs-200);
  line-height: 1.6;
  color: var(--silver-300);
}

.page-about .about-origin__link {
  display: inline-block;
  font-size: var(--fs-200);
  color: var(--neon-450);
  text-decoration: none;
  border-bottom: 1px solid rgba(52, 217, 139, 0.35);
  padding-bottom: 2px;
}

.page-about .about-origin__link:hover,
.page-about .about-origin__link:focus-visible {
  color: var(--volt-500);
  border-bottom-color: var(--volt-500);
}

/* ---------- 流程 ---------- */
.page-about .about-flow__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
  counter-reset: flow;
}

.page-about .about-flow__step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(14px, 3vw, 28px);
  padding: clamp(22px, 3.6vw, 34px) 0;
  border-top: 1px solid var(--about-edge);
  position: relative;
}

.page-about .about-flow__step:last-child {
  border-bottom: 1px solid var(--about-edge);
}

.page-about .about-flow__step::before {
  content: "";
  position: absolute;
  left: 0;
  top: -1px;
  width: 0;
  height: 2px;
  background: var(--volt-500);
  transition: width 0.4s var(--ease);
}

.page-about .about-flow__step:hover::before,
.page-about .about-flow__step:focus-within::before {
  width: 64px;
}

.page-about .about-flow__index {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-200);
  line-height: 1.9;
  color: var(--volt-500);
  letter-spacing: 0.06em;
}

.page-about .about-flow__body {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-about .about-flow__title {
  margin: 0;
  font-size: clamp(1.1rem, 3.2vw, 1.5rem);
  line-height: 1.35;
  color: var(--silver-100);
  font-weight: 700;
}

.page-about .about-flow__body p {
  margin: 0;
  font-size: var(--fs-200);
  line-height: 1.8;
  color: var(--silver-300);
}

.page-about .about-flow__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 6px;
}

.page-about .about-flow__meta .chip {
  font-size: var(--fs-100);
  letter-spacing: 0.04em;
  color: var(--neon-450);
  background: rgba(52, 217, 139, 0.09);
  border: 1px solid rgba(52, 217, 139, 0.28);
  border-radius: var(--radius-pill);
  padding: 4px 12px;
}

.page-about .about-flow__figure {
  margin: clamp(34px, 5vw, 56px) 0 0;
  border-radius: var(--about-radius);
  overflow: hidden;
  border: 1px solid var(--about-edge);
  background: var(--turf-800);
}

.page-about .about-flow__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 11 / 7;
  object-fit: cover;
}

.page-about .about-flow__figure .media-caption {
  display: block;
  padding: 12px 16px 14px;
  font-size: var(--fs-100);
  line-height: 1.7;
  color: var(--silver-300);
  background: rgba(5, 16, 11, 0.7);
}

/* ---------- 团队 ---------- */
.page-about .about-team__grid {
  display: grid;
  gap: clamp(18px, 3vw, 26px);
  grid-template-columns: minmax(0, 1fr);
}

.page-about .about-team__card {
  padding: clamp(22px, 3.4vw, 32px);
  border-radius: var(--about-radius);
  background: linear-gradient(170deg, var(--about-panel), rgba(5, 16, 11, 0.86));
  border: 1px solid var(--about-edge);
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: transform 0.32s var(--ease), border-color 0.32s var(--ease);
}

.page-about .about-team__card:hover {
  transform: translateY(-4px);
  border-color: var(--about-edge-strong);
}

.page-about .about-team__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(2.4rem, 8vw, 3.6rem);
  line-height: 0.86;
  letter-spacing: -0.04em;
  color: rgba(185, 199, 192, 0.28);
}

.page-about .about-team__name {
  margin: 0;
  font-size: var(--fs-400);
  color: var(--silver-100);
  font-weight: 700;
}

.page-about .about-team__card p {
  margin: 0;
  font-size: var(--fs-200);
  line-height: 1.8;
  color: var(--silver-300);
}

.page-about .about-team__foot {
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding-top: clamp(18px, 3vw, 26px);
  border-top: 1px solid var(--about-edge);
  font-size: var(--fs-200);
  line-height: 1.85;
  color: var(--silver-300);
  max-width: 46em;
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  display: flex;
  flex-direction: column;
  gap: clamp(20px, 3.4vw, 32px);
}

.page-about .about-timeline__track {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 4px 2px 14px;
  scroll-snap-type: x proximity;
  border-bottom: 1px solid var(--about-edge);
  scrollbar-width: thin;
}

.page-about .about-timeline__node {
  flex: 0 0 auto;
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  border: 1px solid var(--about-edge);
  background: rgba(11, 42, 30, 0.5);
  color: var(--silver-300);
  cursor: pointer;
  position: relative;
  transition: border-color 0.28s var(--ease), background 0.28s var(--ease), color 0.28s var(--ease);
}

.page-about .about-timeline__node::after {
  content: "";
  position: absolute;
  left: 18px;
  bottom: 6px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--about-edge-strong);
  transition: background 0.28s var(--ease), transform 0.28s var(--ease);
}

.page-about .about-timeline__node[aria-selected="true"] {
  border-color: rgba(255, 106, 26, 0.55);
  background: rgba(255, 106, 26, 0.12);
  color: var(--silver-100);
}

.page-about .about-timeline__node[aria-selected="true"]::after {
  background: var(--volt-500);
  transform: scale(1.35);
}

.page-about .about-timeline__node:hover {
  border-color: var(--about-edge-strong);
}

.page-about .about-timeline__ver {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-400);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--neon-450);
}

.page-about .about-timeline__node[aria-selected="true"] .about-timeline__ver {
  color: var(--volt-500);
}

.page-about .about-timeline__stage {
  font-size: var(--fs-100);
  letter-spacing: 0.1em;
}

.page-about .about-timeline__panel {
  padding: clamp(20px, 3.4vw, 30px);
  border-radius: var(--about-radius);
  background: var(--about-panel-soft);
  border: 1px solid var(--about-edge);
  outline: none;
}

.page-about .about-timeline__panel:focus-visible {
  border-color: var(--neon-450);
}

.page-about .about-timeline__title {
  margin: 0 0 12px;
  font-size: clamp(1.1rem, 3vw, 1.4rem);
  color: var(--silver-100);
  font-weight: 700;
}

.page-about .about-timeline__panel p {
  margin: 0;
  font-size: var(--fs-200);
  line-height: 1.85;
  color: var(--silver-300);
  max-width: 44em;
}

.page-about .about-timeline__figure {
  margin: clamp(30px, 5vw, 50px) 0 0;
  border-radius: var(--about-radius);
  overflow: hidden;
  border: 1px solid var(--about-edge);
  background: var(--turf-800);
}

.page-about .about-timeline__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 7 / 3;
  object-fit: cover;
}

/* ---------- 合作 ---------- */
.page-about .about-partners__grid {
  display: grid;
  gap: clamp(18px, 3vw, 26px);
  grid-template-columns: minmax(0, 1fr);
}

.page-about .about-partners__card {
  padding: clamp(24px, 3.6vw, 34px);
  border-radius: var(--about-radius);
  background: linear-gradient(200deg, rgba(16, 88, 58, 0.5), rgba(5, 16, 11, 0.92));
  border: 1px solid var(--about-edge);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-about .about-partners__num {
  margin: 0;
  font-family: var(--font-display);
  font-variant-numeric: tabular-nums;
  font-size: clamp(3.2rem, 12vw, 5.2rem);
  line-height: 0.82;
  font-weight: 400;
  letter-spacing: -0.05em;
  color: var(--neon-450);
}

.page-about .about-partners__name {
  margin: 0;
  font-size: var(--fs-400);
  color: var(--silver-100);
  font-weight: 700;
}

.page-about .about-partners__card p {
  margin: 0;
  font-size: var(--fs-200);
  line-height: 1.8;
  color: var(--silver-300);
}

.page-about .about-partners__cta {
  margin: clamp(26px, 4vw, 38px) 0 0;
  font-size: var(--fs-200);
  line-height: 1.85;
  color: var(--silver-300);
  max-width: 46em;
}

.page-about .about-partners__cta a {
  color: var(--volt-500);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 106, 26, 0.4);
  padding-bottom: 2px;
  margin-left: 4px;
}

.page-about .about-partners__cta a:hover,
.page-about .about-partners__cta a:focus-visible {
  color: var(--neon-450);
  border-bottom-color: var(--neon-450);
}

/* ---------- 备案与联系 ---------- */
.page-about .about-legal__grid {
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr);
}

.page-about .about-legal__card {
  padding: clamp(18px, 3vw, 26px);
  border-radius: var(--radius-md);
  border: 1px solid var(--about-edge-strong);
  background: rgba(246, 250, 247, 0.03);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-about .about-legal__label {
  margin: 0;
  font-size: var(--fs-100);
  letter-spacing: 0.14em;
  color: var(--silver-300);
}

.page-about .about-legal__value {
  margin: 0;
  font-size: var(--fs-300);
  line-height: 1.5;
  color: var(--silver-100);
  word-break: break-word;
}

.page-about .about-legal__note {
  margin: clamp(22px, 3.4vw, 32px) 0 0;
  font-size: var(--fs-200);
  line-height: 1.85;
  color: var(--silver-300);
  max-width: 46em;
}

/* ---------- 结尾行动 ---------- */
.page-about .about-cta__inner {
  display: grid;
  gap: clamp(20px, 3.4vw, 36px);
  padding: clamp(26px, 4.6vw, 48px);
  border-radius: var(--about-radius);
  background: linear-gradient(120deg, rgba(16, 88, 58, 0.62), rgba(5, 16, 11, 0.9));
  border: 1px solid var(--about-edge-strong);
}

.page-about .about-cta__title {
  margin: 0 0 10px;
  font-size: clamp(1.4rem, 4.6vw, 2.2rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--silver-100);
  font-weight: 800;
}

.page-about .about-cta__text {
  margin: 0;
  font-size: var(--fs-200);
  line-height: 1.8;
  color: var(--silver-300);
  max-width: 40em;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: flex-start;
}

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

  .page-about .about-hero__stat:last-child:nth-child(odd) {
    grid-column: auto;
  }

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }

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

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

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 6fr) minmax(0, 4fr);
    align-items: center;
  }

  .page-about .about-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1100px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-about .about-origin__aside {
    position: sticky;
    top: 108px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .about-flow__step::before,
  .page-about .about-team__card,
  .page-about .about-timeline__node,
  .page-about .about-timeline__node::after {
    transition: none;
  }

  .page-about .about-team__card:hover {
    transform: none;
  }
}
<<<END>>>