.page-about {
  --ab-cut: 16px;
  --ab-edge: rgba(168, 176, 196, 0.18);
  --ab-edge-strong: rgba(168, 176, 196, 0.42);
  background: var(--ink-900);
  color: var(--white);
  overflow-x: hidden;
}

.page-about .wrap {
  position: relative;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 20px 0 48px;
  border-bottom: 1px solid var(--ab-edge);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -220px;
  right: -160px;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(255, 106, 61, 0.16), transparent 64%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: 0;
  right: 8%;
  width: 1px;
  height: 100%;
  background: linear-gradient(180deg, transparent, rgba(53, 240, 224, 0.28), transparent);
  pointer-events: none;
}

.page-about .about-hero__eyebrow {
  display: inline-block;
  margin: 22px 0 0;
  padding: 5px 13px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan);
  border: 1px solid rgba(53, 240, 224, 0.4);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
}

.page-about .about-hero__title {
  margin: 18px 0 20px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(31px, 8.2vw, 62px);
  line-height: 1.06;
  letter-spacing: -0.01em;
  max-width: 18ch;
}

.page-about .about-hero__accent {
  display: block;
  color: var(--coral);
}

.page-about .about-hero__lede {
  max-width: 660px;
  margin: 0 0 34px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--silver);
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  background: var(--ab-edge);
  border: 1px solid var(--ab-edge);
  clip-path: polygon(0 0, calc(100% - var(--ab-cut)) 0, 100% var(--ab-cut), 100% 100%, 0 100%);
}

.page-about .about-hero__stat {
  background: var(--ink-900);
  padding: 18px 16px 16px;
}

.page-about .about-hero__stat dt {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--silver);
  margin-bottom: 6px;
}

.page-about .about-hero__stat dd {
  margin: 0;
  font-size: 0;
}

.page-about .about-hero__stat .num {
  font-size: clamp(30px, 8vw, 48px);
  line-height: 1;
}

/* ---------- 发展阶段 ---------- */
.page-about .about-stages {
  padding: 60px 0 24px;
  position: relative;
}

.page-about .about-stages__head {
  margin-bottom: 36px;
}

.page-about .about-stages__lede {
  max-width: 620px;
  margin: 14px 0 0;
  color: var(--silver);
  font-size: 16px;
  line-height: 1.75;
}

.page-about .about-stages__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

.page-about .about-rail {
  border-top: 1px solid var(--ab-edge);
  padding-top: 14px;
}

.page-about .about-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 10px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.page-about .about-rail__list::-webkit-scrollbar {
  display: none;
}

.page-about .about-rail__item {
  flex: 0 0 auto;
}

.page-about .about-rail__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  color: var(--silver);
  text-decoration: none;
  font-size: 14px;
  border-left: 2px solid var(--ab-edge);
  transition: color var(--ease), border-color var(--ease), background var(--ease);
}

.page-about .about-rail__idx {
  font-size: 13px;
  color: var(--silver);
  transition: color var(--ease);
}

.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus-visible {
  color: var(--cyan);
  border-left-color: var(--cyan);
  background: rgba(53, 240, 224, 0.06);
}

.page-about .about-rail__link:hover .about-rail__idx,
.page-about .about-rail__link:focus-visible .about-rail__idx {
  color: var(--cyan);
}

.page-about .about-rail__link.is-current {
  color: var(--white);
  border-left-color: var(--coral);
}

.page-about .about-rail__link.is-current .about-rail__idx {
  color: var(--coral);
}

.page-about .about-rail__hint {
  display: none;
}

.page-about .about-flow {
  display: grid;
  gap: 0;
}

.page-about .about-stage {
  padding: 22px 0 26px;
  border-top: 1px solid var(--ab-edge);
  scroll-margin-top: 96px;
}

.page-about .about-stage:first-child {
  border-top: 2px solid var(--coral);
}

.page-about .about-stage__meta {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .about-stage__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 5vw, 27px);
  line-height: 1.22;
  color: var(--white);
}

.page-about .about-stage p {
  margin: 0 0 10px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--silver);
  max-width: 66ch;
}

.page-about .about-stage__result {
  color: var(--white) !important;
  border-left: 2px solid var(--cyan);
  padding-left: 12px;
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding: 56px 0;
  background: linear-gradient(180deg, rgba(20, 28, 70, 0.72), rgba(11, 18, 48, 0));
  border-top: 1px solid var(--ab-edge);
  border-bottom: 1px solid var(--ab-edge);
}

.page-about .about-team__head {
  margin-bottom: 30px;
}

.page-about .about-team__lede {
  max-width: 620px;
  margin: 14px 0 0;
  color: var(--silver);
  font-size: 16px;
  line-height: 1.75;
}

.page-about .about-team__media {
  margin: 0 0 32px;
}

.page-about .about-team__media img {
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 14 / 9;
}

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-about .about-team__card {
  position: relative;
  padding: 24px 20px 22px;
  background: var(--ink-800);
  border: 1px solid var(--ab-edge);
  transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
}

.page-about .about-team__card:hover {
  transform: translateY(-2px);
  border-color: rgba(53, 240, 224, 0.55);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.42);
}

.page-about .about-team__num {
  margin: 0 0 4px;
  font-size: clamp(44px, 12vw, 68px);
  line-height: 1;
}

.page-about .about-team__name {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: 0.01em;
  color: var(--white);
}

.page-about .about-team__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--silver);
}

/* ---------- 校对流程 ---------- */
.page-about .about-check {
  padding: 56px 0;
}

.page-about .about-check__panel {
  background: var(--cream);
  color: var(--brown);
  padding: 30px 20px;
}

.page-about .about-check__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}

.page-about .about-check__eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #8a5a3a;
}

.page-about .about-check__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(23px, 5.6vw, 34px);
  line-height: 1.2;
  color: var(--brown);
}

.page-about .about-check__copy p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.8;
  color: #3b2f24;
  max-width: 62ch;
}

.page-about .about-check__steps {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid rgba(36, 28, 20, 0.2);
}

.page-about .about-check__steps li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px dashed rgba(36, 28, 20, 0.18);
  font-size: 15px;
  line-height: 1.6;
  color: #3b2f24;
}

.page-about .about-check__step-num {
  font-size: 13px;
  color: #a8531f;
  flex: 0 0 auto;
}

.page-about .about-check__figure {
  margin: 0;
  display: grid;
  gap: 16px;
}

.page-about .about-svg {
  width: 100%;
  height: auto;
  display: block;
}

.page-about .about-svg__base {
  fill: none;
  stroke: rgba(36, 28, 20, 0.34);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.page-about .about-svg__hot {
  fill: none;
  stroke: var(--coral);
  stroke-width: 3;
  stroke-linecap: round;
}

.page-about .about-svg__node {
  fill: var(--cream);
  stroke: rgba(36, 28, 20, 0.5);
  stroke-width: 2;
}

.page-about .about-svg__node--hot {
  fill: var(--coral);
  stroke: var(--cream);
}

.page-about .about-check__figcaption {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: #6c5847;
}

.page-about .about-check__img {
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 3 / 2;
  border-radius: 2px;
  filter: saturate(0.85);
}

/* ---------- 来源标注 ---------- */
.page-about .about-source {
  padding: 56px 0;
  border-top: 1px solid var(--ab-edge);
}

.page-about .about-source__head {
  margin-bottom: 32px;
}

.page-about .about-source__lede {
  max-width: 620px;
  margin: 14px 0 0;
  color: var(--silver);
  font-size: 16px;
  line-height: 1.75;
}

.page-about .about-source__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-about .about-source__card {
  padding: 22px 18px;
  background: var(--ink-800);
  border: 1px solid var(--ab-edge);
  transition: border-color var(--ease), transform var(--ease);
}

.page-about .about-source__card:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 106, 61, 0.5);
}

.page-about .about-source__card-title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  color: var(--coral);
  letter-spacing: 0.01em;
}

.page-about .about-source__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--silver);
}

.page-about .about-source__strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1px dashed var(--ab-edge);
}

/* ---------- 合作生态 ---------- */
.page-about .about-coop {
  padding: 56px 0;
  background:
    linear-gradient(115deg, transparent 0 62%, rgba(53, 240, 224, 0.05) 62% 64%, transparent 64%),
    var(--ink-900);
  border-top: 1px solid var(--ab-edge);
}

.page-about .about-coop__head {
  margin-bottom: 28px;
}

.page-about .about-coop__lede {
  max-width: 620px;
  margin: 14px 0 0;
  color: var(--silver);
  font-size: 16px;
  line-height: 1.75;
}

.page-about .about-coop__tabs {
  display: block;
}

.page-about .about-coop__tablist {
  gap: 6px;
  margin-bottom: 22px;
}

.page-about .about-coop__tab {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  padding: 9px 16px;
  cursor: pointer;
  transition: color var(--ease), border-color var(--ease), background var(--ease);
}

.page-about .about-coop__tab[aria-selected="true"] {
  color: var(--ink-900);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-about .about-coop__panel {
  padding: 24px 18px;
  background: var(--ink-800);
  border: 1px solid var(--ab-edge);
  border-left: 3px solid var(--coral);
  margin-bottom: 14px;
}

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

.page-about .about-coop__panel-title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(18px, 4.6vw, 23px);
  line-height: 1.3;
  color: var(--white);
}

.page-about .about-coop__panel p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--silver);
  max-width: 68ch;
}

.page-about .about-coop__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-about .about-coop__list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--white);
}

.page-about .about-coop__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 9px;
  height: 2px;
  background: var(--cyan);
}

.page-about .about-coop__media {
  margin: 30px 0 0;
}

.page-about .about-coop__media img {
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 2 / 1;
}

/* ---------- 荣誉与覆盖 ---------- */
.page-about .about-honor {
  padding: 56px 0 72px;
  border-top: 1px solid var(--ab-edge);
}

.page-about .about-honor__head {
  margin-bottom: 32px;
}

.page-about .about-honor__lede {
  max-width: 640px;
  margin: 14px 0 0;
  color: var(--silver);
  font-size: 16px;
  line-height: 1.75;
}

.page-about .about-honor__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin-bottom: 32px;
}

.page-about .about-honor__big {
  padding: 26px 20px;
  background: linear-gradient(150deg, var(--ink-800), rgba(255, 106, 61, 0.14));
  border: 1px solid rgba(255, 106, 61, 0.36);
}

.page-about .about-honor__label {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--silver);
}

.page-about .about-honor__big .num {
  margin: 0;
  font-size: clamp(72px, 20vw, 118px);
  line-height: 0.92;
}

.page-about .about-honor__note {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--silver);
}

.page-about .about-honor__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--ab-edge);
  border: 1px solid var(--ab-edge);
}

.page-about .about-honor__stat {
  background: var(--ink-900);
  padding: 20px 16px;
}

.page-about .about-honor__stat .num {
  margin: 0 0 6px;
  line-height: 1;
}

.page-about .about-honor__stat-label {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--silver);
}

.page-about .about-honor__cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  padding: 26px 20px;
  background: var(--ink-800);
  border: 1px solid var(--ab-edge);
  border-left: 3px solid var(--cyan);
}

.page-about .about-honor__cta-copy h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 4.8vw, 24px);
  color: var(--white);
}

.page-about .about-honor__cta-copy p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--silver);
  max-width: 56ch;
}

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

.page-about .about-honor__links {
  margin: 22px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver);
}

.page-about .about-honor__links a {
  color: var(--cyan);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .wrap {
    padding: 0 32px;
  }

  .page-about .about-hero {
    padding: 26px 0 60px;
  }

  .page-about .about-check__panel {
    padding: 40px 34px;
  }

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

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

  .page-about .about-coop__panel {
    padding: 28px 26px;
  }

  .page-about .about-honor__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1.35fr);
  }

  .page-about .about-honor__cta {
    grid-template-columns: minmax(0, 1.4fr) auto;
    align-items: center;
    padding: 30px 28px;
  }

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

@media (min-width: 960px) {
  .page-about .about-stages {
    padding: 76px 0 32px;
  }

  .page-about .about-stages__grid {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-rail {
    position: sticky;
    top: 96px;
    border-top: none;
    padding-top: 0;
  }

  .page-about .about-rail__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
  }

  .page-about .about-rail__item {
    width: 100%;
  }

  .page-about .about-rail__link {
    width: 100%;
    padding: 11px 14px;
    font-size: 15px;
  }

  .page-about .about-rail__hint {
    display: block;
    max-height: 0;
    overflow: hidden;
    padding-left: 14px;
    font-size: 12.5px;
    line-height: 1.6;
    color: var(--cyan);
    opacity: 0;
    transition: max-height var(--ease), opacity var(--ease), margin var(--ease);
  }

  .page-about .about-rail__item:hover .about-rail__hint,
  .page-about .about-rail__item:focus-within .about-rail__hint {
    max-height: 60px;
    opacity: 0.9;
    margin: 2px 0 8px;
  }

  .page-about .about-stage {
    padding: 28px 0 34px;
  }

  .page-about .about-stage p {
    font-size: 17px;
  }

  .page-about .about-check__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-about .about-check__panel {
    padding: 48px 44px;
  }

  .page-about .about-team {
    padding: 76px 0;
  }

  .page-about .about-check,
  .page-about .about-source {
    padding: 76px 0;
  }

  .page-about .about-coop {
    padding: 76px 0;
  }

  .page-about .about-honor {
    padding: 76px 0 92px;
  }

  .page-about .about-honor__stat {
    padding: 26px 22px;
  }
}

@media (min-width: 1180px) {
  .page-about .about-hero__title {
    font-size: 62px;
  }

  .page-about .about-coop__panel {
    padding: 32px 34px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-team__card,
  .page-about .about-source__card,
  .page-about .about-rail__link,
  .page-about .about-rail__hint,
  .page-about .about-coop__tab {
    transition: none;
  }

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