.page-about {
  background: var(--ink);
  color: var(--white);
}

.page-about .breadcrumb {
  padding-top: var(--s3);
}

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

.page-about h2 {
  font-family: var(--font-cn);
  font-weight: 900;
  letter-spacing: -0.02em;
  font-size: clamp(26px, 4.4vw, 44px);
  line-height: 1.12;
  margin: 0.35em 0 0;
  text-wrap: balance;
}

.page-about h3 {
  font-family: var(--font-cn);
  font-weight: 700;
  font-size: clamp(17px, 2.1vw, 21px);
  line-height: 1.35;
  margin: 0 0 8px;
}

.page-about p {
  line-height: 1.75;
  color: var(--mist);
  max-width: 64ch;
  margin: 0;
}

.page-about p + p {
  margin-top: var(--s2);
}

.page-about .section {
  padding-block: clamp(56px, 9vw, 104px);
}

.page-about .section--tight {
  padding-block: clamp(32px, 5vw, 64px);
}

/* ---------- 刊头 ---------- */
.page-about .about-masthead {
  padding-block: clamp(28px, 5vw, 64px) 0;
}

.page-about .about-masthead__grid {
  display: grid;
  gap: var(--s4);
}

.page-about .about-masthead__title {
  font-family: var(--font-cn);
  font-weight: 900;
  letter-spacing: -0.02em;
  font-size: clamp(32px, 6.6vw, 72px);
  line-height: 1.04;
  margin: 0.32em 0 0;
  max-width: 20ch;
  text-wrap: balance;
}

.page-about .about-masthead__lede {
  margin-top: var(--s3);
  max-width: 60ch;
  font-size: clamp(15px, 1.8vw, 18px);
}

.page-about .about-masthead__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: var(--s3);
}

.page-about .about-masthead__aside {
  display: flex;
  flex-direction: column;
  gap: var(--s2);
  align-items: flex-start;
  border-top: 1px solid var(--line);
  padding-top: var(--s3);
}

.page-about .about-masthead__note {
  font-size: 14px;
  color: var(--mist);
  max-width: 34ch;
}

@media (min-width: 900px) {
  .page-about .about-masthead__grid {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    align-items: end;
    gap: clamp(32px, 5vw, 72px);
  }

  .page-about .about-masthead__aside {
    border-top: 0;
    border-left: 1px solid var(--line);
    padding-top: 0;
    padding-left: var(--s4);
    padding-bottom: 8px;
  }
}

/* ---------- 章节索引 ---------- */
.page-about .about-index {
  margin-top: clamp(28px, 5vw, 56px);
  border-block: 1px solid var(--line);
  background: var(--board);
}

.page-about .about-index__inner {
  display: flex;
  align-items: center;
  gap: var(--s2);
  overflow-x: auto;
  padding-block: 12px;
  scrollbar-width: thin;
}

.page-about .about-index__label {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--steel);
  white-space: nowrap;
  flex: none;
}

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

.page-about .about-index__list a {
  display: inline-block;
  white-space: nowrap;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
  text-decoration: none;
  padding: 6px 10px;
  border: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-about .about-index__list a:hover,
.page-about .about-index__list a:focus-visible {
  color: var(--lime);
  border-color: var(--line-strong);
}

/* ---------- 八年时间线 ---------- */
.page-about .about-story__head {
  max-width: 62ch;
  margin-bottom: clamp(32px, 5vw, 64px);
}

.page-about .about-story__intro {
  margin-top: var(--s3);
}

.page-about .about-story__body {
  display: grid;
  gap: var(--s4);
}

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

.page-about .about-story__figure .media-frame {
  overflow: hidden;
  border: 1px solid var(--line);
}

.page-about .about-story__figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.9) brightness(0.92);
}

.page-about .media-caption {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--steel);
  line-height: 1.6;
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 30px;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--lime), var(--grid) 45%, var(--grid));
}

.page-about .about-timeline__item {
  position: relative;
  padding-bottom: var(--s4);
}

.page-about .about-timeline__item:last-child {
  padding-bottom: 0;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 7px;
  width: 9px;
  height: 9px;
  border: 1px solid var(--lime);
  background: var(--ink);
  border-radius: 50%;
  box-shadow: 0 0 0 5px var(--ink);
}

.page-about .about-timeline__item--accent::before {
  background: var(--lime);
}

.page-about .about-timeline__mark {
  display: inline-block;
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--orange);
  margin-bottom: 4px;
}

.page-about .about-timeline__item p {
  font-size: 15px;
}

@media (min-width: 900px) {
  .page-about .about-story__body {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(32px, 5vw, 72px);
    align-items: start;
  }

  .page-about .about-story__figure {
    position: sticky;
    top: 24px;
    align-self: start;
  }

  .page-about .about-timeline__item p {
    font-size: 16px;
  }
}

/* ---------- 四类能力 ---------- */
.page-about .about-caps__head {
  max-width: 62ch;
  margin-bottom: clamp(28px, 4vw, 48px);
}

.page-about .about-caps__intro {
  margin-top: var(--s3);
}

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

.page-about .about-caps__item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: var(--s2);
  padding: var(--s3) 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-caps__no {
  font-family: var(--font-num);
  font-size: clamp(36px, 5vw, 56px);
  line-height: 0.9;
  color: var(--grid);
  letter-spacing: 0.02em;
}

.page-about .about-caps__body p {
  font-size: 15px;
  max-width: 46ch;
}

.page-about .about-caps__link {
  display: inline-block;
  margin-top: 12px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 255, 74, 0.4);
  padding-bottom: 2px;
}

.page-about .about-caps__link:hover,
.page-about .about-caps__link:focus-visible {
  color: var(--white);
  border-bottom-color: var(--white);
}

@media (min-width: 900px) {
  .page-about .about-caps__list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(32px, 5vw, 72px);
  }

  .page-about .about-caps__item {
    grid-template-columns: 72px minmax(0, 1fr);
    padding: var(--s4) 0;
  }

  .page-about .about-caps__item:nth-child(even) {
    padding-top: calc(var(--s4) + 40px);
  }
}

/* ---------- 团队 ---------- */
.page-about .about-team__grid {
  display: grid;
  gap: var(--s4);
}

.page-about .about-team__lead {
  margin-top: var(--s3);
}

.page-about .about-team__roles {
  display: grid;
  gap: 12px;
  margin-top: var(--s4);
}

.page-about .about-role {
  position: relative;
  background: var(--panel);
  padding: var(--s3);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
}

.page-about .about-role__tag {
  display: block;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--cyan);
  margin-bottom: 8px;
}

.page-about .about-role p {
  font-size: 14px;
  line-height: 1.7;
}

.page-about .about-team__note {
  margin-top: var(--s4);
  padding: var(--s3) 0 0 var(--s3);
  border-left: 2px solid var(--orange);
  font-size: 14px;
  color: var(--mist);
  max-width: 52ch;
}

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

.page-about .about-team__figure .media-frame {
  overflow: hidden;
  border: 1px solid var(--line);
}

.page-about .about-team__figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (min-width: 640px) {
  .page-about .about-team__roles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(32px, 5vw, 72px);
    align-items: start;
  }

  .page-about .about-team__figure {
    position: sticky;
    top: 24px;
  }
}

/* ---------- 覆盖与协作 ---------- */
.page-about .about-reach__head {
  max-width: 64ch;
  margin-bottom: clamp(28px, 4vw, 48px);
}

.page-about .about-reach__intro {
  margin-top: var(--s3);
}

.page-about .about-reach__grid {
  display: grid;
  gap: var(--s3);
}

.page-about .about-reach__map {
  border: 1px solid var(--line);
  background: var(--board);
  padding: 8px;
}

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

.page-about .about-map__grid path {
  fill: none;
  stroke: var(--grid);
  stroke-width: 1;
  opacity: 0.6;
}

.page-about .about-map__links path {
  fill: none;
  stroke: var(--steel);
  stroke-width: 1;
  stroke-dasharray: 4 7;
  opacity: 0.7;
}

.page-about .about-map__nodes circle {
  fill: var(--cyan);
}

.page-about .about-map__nodes circle.is-key {
  fill: var(--lime);
}

.page-about .about-map__core {
  fill: var(--lime);
}

.page-about .about-map__core-text {
  fill: var(--ink);
  font-family: var(--font-cn);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.page-about .about-map__label {
  fill: var(--mist);
  font-family: var(--font-cn);
  font-size: 19px;
  letter-spacing: 0.02em;
}

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

.page-about .about-reach__stat {
  display: flex;
  flex-direction: column-reverse;
  justify-content: flex-end;
  gap: 2px;
  background: var(--board);
  padding: 14px 16px;
}

.page-about .about-reach__stat dt {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--steel);
}

.page-about .about-reach__stat dd {
  margin: 0;
  font-family: var(--font-num);
  font-size: clamp(30px, 4vw, 40px);
  line-height: 1;
  color: var(--white);
  font-variant-numeric: tabular-nums;
}

.page-about .about-reach__stat:nth-child(1) dd,
.page-about .about-reach__stat:nth-child(4) dd {
  color: var(--lime);
}

.page-about .about-reach__wide {
  margin-top: clamp(28px, 4vw, 48px);
  display: grid;
  gap: var(--s3);
}

.page-about .about-reach__copy {
  font-size: 15px;
}

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

.page-about .about-reach__figure .media-frame {
  overflow: hidden;
  border: 1px solid var(--line);
}

.page-about .about-reach__figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (min-width: 760px) {
  .page-about .about-map__label {
    font-size: 14px;
  }

  .page-about .about-map__core-text {
    font-size: 15px;
  }

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

@media (min-width: 900px) {
  .page-about .about-reach__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(24px, 3vw, 40px);
    align-items: center;
  }

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

  .page-about .about-reach__wide {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: clamp(24px, 4vw, 56px);
    align-items: start;
  }
}

/* ---------- 长期投入 ---------- */
.page-about .about-honors__grid {
  display: grid;
  gap: var(--s4);
}

.page-about .about-honors__head p {
  margin-top: var(--s3);
}

.page-about .about-honors__note {
  padding-left: var(--s3);
  border-left: 2px solid var(--cyan);
  font-size: 14px;
}

.page-about .about-honors__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-strong);
}

.page-about .about-honors__item {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: var(--s2);
  align-items: baseline;
  padding: var(--s3) 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-honors__num {
  font-family: var(--font-num);
  font-size: clamp(34px, 4.6vw, 52px);
  line-height: 0.95;
  color: var(--orange);
  font-variant-numeric: tabular-nums;
}

.page-about .about-honors__item h3 {
  font-size: 16px;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-about .about-honors__item p {
  font-size: 14px;
  line-height: 1.7;
}

@media (min-width: 900px) {
  .page-about .about-honors__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(32px, 5vw, 72px);
    align-items: start;
  }

  .page-about .about-honors__item {
    grid-template-columns: 104px minmax(0, 1fr);
  }
}

/* ---------- 下一步 ---------- */
.page-about .about-cta__panel {
  position: relative;
  padding: clamp(24px, 5vw, 56px);
  background:
    linear-gradient(135deg, var(--panel) 0%, var(--board) 58%, rgba(40, 224, 192, 0.1) 100%);
  border-left: 3px solid var(--lime);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
}

.page-about .about-cta__copy {
  margin-top: var(--s3);
  max-width: 58ch;
  font-size: 15px;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px var(--s2);
  margin-top: var(--s4);
}

.page-about .about-cta__textlink {
  font-size: 13px;
  color: var(--steel);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 2px;
}

.page-about .about-cta__textlink:hover,
.page-about .about-cta__textlink:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
}
<<<END>>>