.page-about {
  --about-pad: clamp(52px, 7vw, 104px);
  --about-cut: 16px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(34px, 7vw, 88px) clamp(26px, 5vw, 64px);
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: -34%;
  right: -12%;
  width: min(680px, 72%);
  aspect-ratio: 1;
  background: radial-gradient(closest-side, rgba(255, 61, 139, .18), rgba(122, 43, 255, .09) 55%, transparent 74%);
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(28px, 4vw, 48px);
}

.page-about .about-hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--gold);
}

.page-about .about-hero__kicker::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--cyan);
}

.page-about .about-hero h1 {
  margin: 18px 0 0;
  font-size: clamp(32px, 6.6vw, 76px);
  font-weight: 300;
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-about .about-hero__lede {
  margin: clamp(20px, 3vw, 30px) 0 0;
  max-width: 34em;
  font-size: clamp(16px, 1.5vw, 18px);
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3vw, 34px);
}

.page-about .about-hero__panel {
  padding: clamp(20px, 3vw, 30px);
  background: linear-gradient(158deg, rgba(14, 23, 48, .96), rgba(7, 11, 24, .92));
  border-color: rgba(34, 224, 214, .3);
}

.page-about .about-hero__panel .mono-label {
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: .14em;
}

.page-about .about-hero__facts {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
}

.page-about .about-hero__facts li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--line-soft);
}

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

.page-about .about-hero__facts b {
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 500;
  color: var(--paper);
  white-space: nowrap;
}

.page-about .about-hero__facts b small {
  font-size: 12px;
  color: var(--gold);
  margin-left: 2px;
}

.page-about .about-hero__facts span {
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
  text-align: right;
}

/* ---------- 章节统一节奏 ---------- */
.page-about .about-origin,
.page-about .about-timeline,
.page-about .about-team,
.page-about .about-reach,
.page-about .about-organize,
.page-about .about-next {
  padding-block: var(--about-pad);
}

.page-about .about-origin {
  border-bottom: 1px solid var(--line-soft);
}

/* ---------- 起点与定位 ---------- */
.page-about .about-origin__grid {
  display: grid;
  gap: clamp(22px, 3vw, 44px);
  margin-top: clamp(26px, 3.5vw, 42px);
}

.page-about .about-origin__grid .prose p {
  margin: 0 0 1.15em;
}

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

/* ---------- 发展脉络 ---------- */
.page-about .about-timeline {
  background:
    linear-gradient(180deg, rgba(14, 23, 48, .5), transparent 62%),
    repeating-linear-gradient(90deg, rgba(30, 53, 80, .18) 0 1px, transparent 1px 96px);
}

.page-about .about-timeline__body {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  margin-top: clamp(30px, 4.5vw, 54px);
}

.page-about .about-timeline__visual {
  position: relative;
  overflow: hidden;
  background: var(--ink-800);
  border: 1px solid var(--line);
  clip-path: polygon(0 20px, 20px 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.page-about .about-timeline__visual img {
  display: block;
  width: 100%;
  height: 240px;
  object-fit: cover;
  opacity: .85;
}

.page-about .about-timeline__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(16px, 2.4vw, 26px);
}

.page-about .tl-node {
  position: relative;
  display: grid;
  gap: 10px;
  padding: clamp(18px, 2.4vw, 26px) clamp(18px, 2.6vw, 30px);
  background: linear-gradient(102deg, rgba(14, 23, 48, .95), rgba(14, 23, 48, .55));
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--cyan);
  transition: border-color var(--ease), background-color var(--ease);
}

.page-about .tl-node:hover {
  border-color: rgba(34, 224, 214, .55);
  border-left-color: var(--gold);
}

.page-about .tl-node__idx {
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--gold);
}

.page-about .tl-node__title {
  margin: 0;
  font-size: clamp(17px, 1.8vw, 22px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .tl-node__text {
  margin: 0;
  max-width: 48em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 团队与响应 ---------- */
.page-about .about-team__bars {
  display: grid;
  gap: clamp(16px, 2.2vw, 24px);
  margin-top: clamp(30px, 4vw, 48px);
}

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

.page-about .team-bar__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
}

.page-about .team-bar__name {
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper);
}

.page-about .team-bar__num {
  font-size: 14px;
  color: var(--gold);
  white-space: nowrap;
}

.page-about .team-bar__track {
  display: block;
  height: 8px;
  background: var(--ink-750);
  border: 1px solid var(--line-soft);
  overflow: hidden;
}

.page-about .team-bar__fill {
  display: block;
  height: 100%;
  width: var(--pct, 0%);
  background: linear-gradient(90deg, var(--cyan), rgba(34, 224, 214, .28));
  transition: width 420ms var(--ease);
}

.page-about .team-bar__fill--gold {
  background: linear-gradient(90deg, var(--gold), rgba(233, 180, 92, .26));
}

.page-about .about-team__notes {
  display: grid;
  gap: clamp(18px, 2.6vw, 28px);
  margin-top: clamp(30px, 4vw, 50px);
  padding-top: clamp(24px, 3vw, 36px);
  border-top: 1px solid var(--line);
}

.page-about .team-note__k {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-about .team-note__v {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 合作与覆盖 ---------- */
.page-about .about-reach {
  background: linear-gradient(180deg, rgba(122, 43, 255, .07), transparent 55%);
}

.page-about .about-reach__layout {
  display: grid;
  gap: clamp(24px, 4vw, 42px);
  margin-top: clamp(30px, 4vw, 48px);
}

.page-about .about-reach__fig {
  margin: 0;
  background: var(--ink-800);
  border: 1px solid var(--line);
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 22px 100%, 0 calc(100% - 22px));
}

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

.page-about .about-reach__fig figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--mist);
}

.page-about .about-reach__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.page-about .reach-stat {
  padding: clamp(16px, 2vw, 22px);
  background: var(--ink-800);
  border: 1px solid var(--line-soft);
  border-top: 2px solid var(--gold);
}

.page-about .reach-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.2vw, 36px);
  font-weight: 500;
  line-height: 1.1;
  color: var(--paper);
}

.page-about .reach-stat__num em {
  font-style: normal;
  font-size: .44em;
  letter-spacing: .06em;
  color: var(--gold);
  margin-left: 4px;
}

.page-about .reach-stat__lbl {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .about-reach__foot {
  margin: clamp(26px, 3.5vw, 40px) 0 0;
  padding-left: 18px;
  border-left: 2px solid var(--cyan);
  max-width: 62em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 内容怎么分 ---------- */
.page-about .about-organize__grid {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  margin-top: clamp(30px, 4vw, 48px);
}

.page-about .about-organize__fig {
  margin: 0;
  background: var(--ink-800);
  border: 1px solid var(--line);
  overflow: hidden;
  clip-path: polygon(20px 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%, 0 20px);
}

.page-about .about-organize__fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 4;
  object-fit: cover;
}

.page-about .about-organize__fig figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--gold);
}

.page-about .about-organize__text .prose p {
  margin: 0 0 1.15em;
}

.page-about .org-layers {
  list-style: none;
  margin: clamp(24px, 3vw, 36px) 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .org-layer {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 6px 14px;
  padding: 14px 18px;
  background: linear-gradient(90deg, rgba(34, 224, 214, .09), transparent 70%);
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--cyan);
}

.page-about .org-layer:nth-child(2) {
  border-left-color: var(--gold);
  background: linear-gradient(90deg, rgba(233, 180, 92, .09), transparent 70%);
  margin-left: clamp(0px, 2vw, 22px);
}

.page-about .org-layer:nth-child(3) {
  border-left-color: var(--violet);
  background: linear-gradient(90deg, rgba(122, 43, 255, .12), transparent 70%);
  margin-left: clamp(0px, 4vw, 44px);
}

.page-about .org-layer__tag {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-about .org-layer:nth-child(2) .org-layer__tag {
  color: var(--gold);
}

.page-about .org-layer:nth-child(3) .org-layer__tag {
  color: var(--violet);
}

.page-about .org-layer__name {
  font-size: 15px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .org-layer__desc {
  grid-column: 2;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 结尾引导 ---------- */
.page-about .about-next__panel {
  padding: clamp(26px, 4vw, 48px);
  background: linear-gradient(140deg, rgba(14, 23, 48, .98), rgba(7, 11, 24, .95));
  border-color: rgba(34, 224, 214, .28);
}

.page-about .about-next__copy h2 {
  margin: 12px 0 0;
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--paper);
}

.page-about .about-next__copy p {
  margin: 16px 0 0;
  max-width: 54em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-about .about-next__contact {
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding-top: clamp(18px, 2.4vw, 26px);
  border-top: 1px dashed var(--line-soft);
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-next__contact a {
  color: var(--cyan);
  border-bottom: 1px solid rgba(34, 224, 214, .4);
}

.page-about .about-next__contact a:hover {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 760px) {
  .page-about .about-origin__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-origin__grid > :nth-child(2) {
    margin-top: 34px;
  }

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

@media (min-width: 960px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    gap: clamp(40px, 6vw, 88px);
  }

  .page-about .about-hero__panel {
    margin-bottom: 6px;
  }

  .page-about .about-timeline__body {
    grid-template-columns: minmax(0, 3fr) minmax(0, 8fr);
    align-items: start;
    gap: clamp(32px, 5vw, 64px);
  }

  .page-about .about-timeline__visual {
    position: sticky;
    top: calc(var(--cmd-h) + 28px);
  }

  .page-about .about-timeline__visual img {
    height: 560px;
  }

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

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

  .page-about .about-next__panel {
    display: grid;
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    gap: clamp(28px, 4vw, 56px);
  }

  .page-about .about-next__copy {
    grid-column: 1;
  }

  .page-about .about-next__links {
    grid-column: 2;
    grid-row: 1;
    justify-content: flex-end;
    margin-top: 0;
  }

  .page-about .about-next__contact {
    grid-column: 1 / -1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .team-bar__fill,
  .page-about .tl-node {
    transition: none;
  }
}
</PAGE_CSS>>>

.page-about {
  --pct: 1rem;
}