.page-about {
  --about-gap: clamp(18px, 3.6vw, 34px);
  --about-block: clamp(44px, 7vw, 84px);
  background: var(--ink);
  color: var(--text);
  padding-bottom: clamp(40px, 6vw, 80px);
}

.page-about .container {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.page-about img {
  display: block;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about h1,
.page-about h2,
.page-about h3 {
  margin: 0;
  font-family: var(--sans);
  line-height: 1.24;
}

.page-about .breadcrumb {
  padding-block: 18px 0;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
}

.page-about .breadcrumb__link,
.page-about .breadcrumb__sep,
.page-about .breadcrumb__current {
  color: var(--muted);
  text-decoration: none;
}

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

.page-about .breadcrumb__current {
  color: var(--text);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding-block: clamp(26px, 4vw, 54px) clamp(40px, 6vw, 78px);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(193, 59, 255, 0.2), transparent 62%),
    radial-gradient(90% 80% at 0% 16%, rgba(61, 245, 255, 0.1), transparent 66%),
    linear-gradient(180deg, rgba(27, 20, 64, 0.72), rgba(5, 11, 26, 0) 72%);
  border-bottom: 1px solid var(--line);
}

.page-about .about-hero__inner {
  display: grid;
  gap: clamp(26px, 4vw, 46px);
  min-width: 0;
}

.page-about .about-hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .about-hero__kicker-num {
  display: inline-grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border: 1px solid var(--line);
  color: var(--orange);
  font-size: 0.72rem;
}

.page-about .about-hero__title {
  max-width: 15ch;
  font-size: clamp(2rem, 6.2vw, 3.6rem);
  font-weight: 900;
  letter-spacing: -0.01em;
}

.page-about .about-hero__intro {
  margin: 20px 0 0;
  max-width: 46ch;
  font-size: clamp(1rem, 1.6vw, 1.1rem);
  line-height: 1.8;
  color: rgba(232, 243, 255, 0.86);
}

.page-about .about-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 26px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-hero__stat {
  flex: 1 1 120px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.page-about .about-hero__stat strong {
  display: block;
  font-family: var(--mono);
  font-size: clamp(1.5rem, 3.4vw, 2rem);
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: -0.02em;
}

.page-about .about-hero__stat span {
  display: block;
  margin-top: 6px;
  font-size: 0.82rem;
  color: var(--muted);
}

.page-about .about-hero__figure {
  margin: 0;
}

.page-about .about-hero__figure img {
  width: 100%;
  border: 1px solid var(--line);
  aspect-ratio: 3 / 2;
}

.page-about .about-hero__figure figcaption {
  margin-top: 12px;
  padding-left: 10px;
  border-left: 2px solid var(--orange);
  font-family: var(--mono);
  font-size: 0.74rem;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--muted);
}

/* ---------- 章节通用 ---------- */
.page-about .chapter {
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-about .chapter__label {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-about .chapter__title {
  font-size: clamp(1.4rem, 3.4vw, 2.05rem);
  font-weight: 800;
  max-width: 26ch;
}

.page-about .prose p {
  margin: 0 0 16px;
  line-height: 1.85;
  color: rgba(232, 243, 255, 0.84);
}

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

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

.page-about .about-origin__grid {
  display: grid;
  gap: var(--about-gap);
  min-width: 0;
}

.page-about .about-origin__text {
  order: 2;
}

.page-about .about-origin__panels {
  order: 1;
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-origin__card {
  padding: clamp(16px, 2.4vw, 24px);
  border: 1px solid var(--line);
  transition: transform 0.24s var(--ease), border-color 0.24s var(--ease);
}

.page-about .about-origin__card:hover {
  transform: translateY(-3px);
  border-color: rgba(61, 245, 255, 0.55);
}

.page-about .about-origin__card .panel__index {
  margin: 0 0 8px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-about .about-origin__card .panel__title {
  margin: 0 0 8px;
  font-size: 1.05rem;
  font-weight: 800;
}

.page-about .about-origin__card .panel__body {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  padding-block: var(--about-block);
  background:
    linear-gradient(180deg, rgba(14, 42, 51, 0.58), rgba(5, 11, 26, 0) 78%);
  border-bottom: 1px solid var(--line);
}

.page-about .about-timeline__layout {
  display: grid;
  gap: clamp(18px, 3vw, 30px);
  min-width: 0;
}

.page-about .about-timeline__years {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
}

.page-about .about-timeline__year-link {
  display: block;
  padding: 4px 10px;
  border: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.86rem;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-about .about-timeline__year-link:hover,
.page-about .about-timeline__year-link:focus-visible {
  color: var(--cyan);
  border-color: rgba(61, 245, 255, 0.6);
  background: rgba(61, 245, 255, 0.07);
  outline: none;
}

.page-about .about-timeline__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-timeline__item {
  position: relative;
  padding: 18px 0 18px 24px;
  border-left: 1px solid var(--line);
  transition: background 0.25s var(--ease);
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 26px;
  width: 7px;
  height: 7px;
  background: var(--line);
  transition: background 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-about .about-timeline__item:hover::before,
.page-about .about-timeline__item:target::before {
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(61, 245, 255, 0.16);
}

.page-about .about-timeline__item:target {
  background: linear-gradient(90deg, rgba(61, 245, 255, 0.08), transparent 72%);
}

.page-about .about-timeline__year {
  margin: 0 0 6px;
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  color: var(--orange);
}

.page-about .about-timeline__name {
  margin: 0 0 6px;
  font-size: 1.05rem;
  font-weight: 800;
}

.page-about .about-timeline__desc {
  margin: 0;
  max-width: 58ch;
  font-size: 0.92rem;
  line-height: 1.78;
  color: var(--muted);
}

.page-about .about-timeline__figure {
  margin: 24px 0 0;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.page-about .about-timeline__figure img {
  width: 100%;
  border: 1px solid var(--line);
  aspect-ratio: 2 / 1;
}

.page-about .about-timeline__figure figcaption {
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 0.74rem;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding-block: var(--about-block);
  border-bottom: 1px solid var(--line);
}

.page-about .about-team__layout {
  display: grid;
  gap: var(--about-gap);
  min-width: 0;
}

.page-about .about-team__figure {
  margin: 0;
}

.page-about .about-team__figure img {
  width: 100%;
  border: 1px solid var(--line);
  aspect-ratio: 10 / 7;
}

.page-about .about-team__figure figcaption {
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 0.74rem;
  line-height: 1.7;
  color: var(--muted);
  padding-left: 10px;
  border-left: 2px solid var(--cyan);
}

.page-about .about-team__cards {
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-about .about-team__card {
  border: 1px solid var(--line);
  background: var(--panel);
  transition: border-color 0.22s var(--ease);
}

.page-about .about-team__card:hover {
  border-color: rgba(61, 245, 255, 0.45);
}

.page-about .about-team__summary {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 15px 16px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  list-style: none;
}

.page-about .about-team__summary::-webkit-details-marker {
  display: none;
}

.page-about .about-team__summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--mono);
  color: var(--cyan);
  font-weight: 400;
}

.page-about .about-team__card[open] .about-team__summary::after {
  content: "−";
}

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

.page-about .about-team__count {
  font-family: var(--mono);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--orange);
  letter-spacing: -0.02em;
}

.page-about .about-team__detail {
  padding: 0 16px 16px;
  border-top: 1px solid var(--line);
}

.page-about .about-team__detail p {
  margin: 14px 0 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 数据运营 ---------- */
.page-about .about-data {
  padding-block: var(--about-block);
  background:
    radial-gradient(90% 80% at 100% 0%, rgba(193, 59, 255, 0.14), transparent 62%),
    linear-gradient(140deg, rgba(14, 42, 51, 0.9), rgba(10, 23, 48, 0.86));
  border-bottom: 1px solid var(--line);
}

.page-about .about-data__grid {
  display: grid;
  gap: var(--about-gap);
  min-width: 0;
}

.page-about .about-data__metrics {
  display: grid;
  gap: 20px;
  align-content: start;
}

.page-about .about-data__metric {
  display: grid;
  gap: 6px;
}

.page-about .about-data__value {
  margin: 0;
  font-family: var(--mono);
  font-size: clamp(1.6rem, 4vw, 2.15rem);
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: -0.03em;
}

.page-about .about-data__label {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.6;
  color: var(--muted);
}

.page-about .about-data__bar {
  height: 7px;
  margin-top: 4px;
  background: linear-gradient(90deg, var(--cyan), var(--magenta-a), var(--orange));
  transform: skewX(-18deg);
  transform-origin: left center;
}

.page-about .about-data__metric:nth-child(1) .about-data__bar {
  width: 92%;
}

.page-about .about-data__metric:nth-child(2) .about-data__bar {
  width: 76%;
}

.page-about .about-data__metric:nth-child(3) .about-data__bar {
  width: 58%;
}

.page-about .about-data__note {
  margin-top: clamp(22px, 3vw, 34px);
  padding: 16px 18px;
  border-left: 2px solid var(--orange);
  background: rgba(5, 11, 26, 0.5);
}

.page-about .about-data__note p {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.8rem;
  line-height: 1.9;
  color: rgba(232, 243, 255, 0.78);
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners {
  padding-block: var(--about-block);
  border-bottom: 1px solid var(--line);
}

.page-about .about-partners__intro {
  max-width: 58ch;
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-about .about-partners__grid {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-partners__card {
  padding: clamp(16px, 2.4vw, 24px);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(58, 15, 36, 0.55), rgba(10, 23, 48, 0.9));
  transition: transform 0.24s var(--ease), border-color 0.24s var(--ease);
}

.page-about .about-partners__card:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 122, 26, 0.5);
}

.page-about .about-partners__index {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-about .about-partners__name {
  margin: 0 0 8px;
  font-size: 1.05rem;
  font-weight: 800;
}

.page-about .about-partners__desc {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 成果 ---------- */
.page-about .about-proof {
  padding-block: var(--about-block);
  background: linear-gradient(200deg, rgba(27, 20, 64, 0.92), rgba(5, 11, 26, 0) 82%);
  border-bottom: 1px solid var(--line);
}

.page-about .about-proof__inner {
  display: grid;
  gap: var(--about-gap);
  min-width: 0;
}

.page-about .about-proof__list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-about .about-proof__item {
  display: grid;
  gap: 4px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-proof__tag {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-about .about-proof__text {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.75;
  color: rgba(232, 243, 255, 0.86);
}

/* ---------- 下一步 ---------- */
.page-about .about-next {
  padding-block: var(--about-block) clamp(20px, 3vw, 32px);
  background:
    linear-gradient(180deg, rgba(5, 11, 26, 0), rgba(193, 59, 255, 0.1));
}

.page-about .about-next__grid {
  display: grid;
  gap: 10px;
}

.page-about .about-next__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 18px;
  font-size: 0.95rem;
  text-decoration: none;
  border-radius: var(--radius);
}

.page-about .about-next__arrow {
  font-family: var(--mono);
  transition: transform 0.22s var(--ease);
}

.page-about .about-next__link:hover .about-next__arrow,
.page-about .about-next__link:focus-visible .about-next__arrow {
  transform: translateX(4px);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-origin__panels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

  .page-about .about-proof__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-bottom: 1px solid var(--line);
  }

  .page-about .about-proof__item {
    padding: 16px 18px;
    border-bottom: 0;
    border-left: 1px solid var(--line);
  }

  .page-about .about-proof__item:first-child {
    border-left: 0;
    padding-left: 0;
  }
}

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

  .page-about .about-timeline__layout {
    grid-template-columns: 168px minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-timeline__index {
    position: sticky;
    top: 96px;
  }

  .page-about .about-timeline__years {
    flex-direction: column;
    gap: 4px;
  }

  .page-about .about-timeline__year-link {
    border-color: transparent;
    font-size: 1rem;
    padding: 5px 8px;
  }

  .page-about .about-team__layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-about .about-data__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

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

@media (min-width: 1100px) {
  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    align-items: start;
  }

  .page-about .about-origin__text {
    order: 1;
  }

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

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

@media (prefers-reduced-motion: reduce) {
  .page-about .about-origin__card,
  .page-about .about-partners__card,
  .page-about .about-next__arrow,
  .page-about .about-timeline__item {
    transition: none;
  }

  .page-about .about-origin__card:hover,
  .page-about .about-partners__card:hover,
  .page-about .about-next__link:hover .about-next__arrow {
    transform: none;
  }
}
<<<END>>>