.page-about {
  --about-line: var(--ink-700);
  --about-pad: clamp(2.25rem, 6vw, 4.5rem);
  background: var(--paper-050);
  color: var(--ink-800);
  overflow-x: hidden;
}

.page-about .breadcrumb {
  padding: 1rem 0 .5rem;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  background: var(--ink-950);
  color: var(--paper-050);
  padding-bottom: .5rem;
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(90deg, rgba(45, 245, 212, .07) 0 1px, transparent 1px 92px);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -12%;
  top: -30%;
  width: 46vw;
  height: 46vw;
  max-width: 640px;
  max-height: 640px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 107, 74, .22), transparent 62%);
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2rem;
  padding-top: var(--about-pad);
  padding-bottom: 1.75rem;
}

.page-about .about-hero .display {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: .94;
  font-size: clamp(2.6rem, 9vw, 5.5rem);
  margin: .55rem 0 1.15rem;
  text-wrap: balance;
}

.page-about .about-hero__lede {
  max-width: 46ch;
  color: var(--paper-300);
  font-size: 1rem;
  line-height: 1.8;
  margin: 0 0 1.6rem;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

.page-about .about-facts {
  background: var(--ink-900);
  border: 1px solid var(--cyan-200);
  border-radius: var(--radius);
  padding: 1.25rem 1.15rem;
  align-self: end;
}

.page-about .about-facts__title {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cyan-400);
  margin: 0 0 .85rem;
}

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

.page-about .about-facts__item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: .6rem 0;
  border-bottom: 1px solid var(--ink-700);
}

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

.page-about .about-facts__key {
  font-size: .82rem;
  color: var(--slate-500);
}

.page-about .about-facts__val {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: .95rem;
  color: var(--cyan-200);
  text-align: right;
}

.page-about .about-jump {
  position: relative;
  z-index: 1;
  list-style: none;
  display: flex;
  gap: .55rem;
  margin: 0;
  padding: .9rem 0 1.15rem;
  border-top: 1px solid var(--ink-700);
  overflow-x: auto;
  scrollbar-width: none;
}

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

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

.page-about .about-jump__link {
  display: inline-block;
  padding: .35rem .9rem;
  border: 1px solid var(--ink-700);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .04em;
  color: var(--cyan-200);
  text-decoration: none;
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast);
}

.page-about .about-jump__link:hover,
.page-about .about-jump__link:focus-visible {
  background: var(--cyan-400);
  border-color: var(--cyan-400);
  color: var(--ink-950);
}

/* ---------- 品牌起点 ---------- */
.page-about .about-origin {
  background: var(--paper-050);
}

.page-about .about-origin__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2rem;
}

.page-about .about-origin .section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.8rem, 5vw, 2.9rem);
  line-height: 1.02;
  letter-spacing: -.01em;
  margin: .4rem 0 1.25rem;
}

.page-about .about-origin .prose p {
  margin: 0 0 1rem;
  line-height: 1.85;
  color: var(--ink-800);
}

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

.page-about .about-quotes {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 0;
  display: grid;
  gap: .6rem;
}

.page-about .about-quotes__item {
  position: relative;
  padding-left: 1.4rem;
  font-size: .92rem;
  color: var(--ink-700);
}

.page-about .about-quotes__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: .55em;
  width: .7rem;
  height: 3px;
  background: var(--cyan-400);
}

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

.page-about .about-origin__figure .media-frame {
  border: 2px solid var(--ink-800);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

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

.page-about .about-origin__figure .media-caption {
  display: block;
  margin-top: .85rem;
  font-family: var(--font-mono);
  font-size: .76rem;
  line-height: 1.6;
  color: var(--slate-500);
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  background: var(--ink-900);
  color: var(--paper-100);
  padding: var(--about-pad) 0;
}

.page-about .about-timeline__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .85rem;
  margin-bottom: 1.75rem;
}

.page-about .about-timeline .eyebrow {
  color: var(--cyan-400);
}

.page-about .about-timeline .section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.8rem, 5vw, 2.9rem);
  line-height: 1.02;
  margin: .4rem 0 0;
  color: var(--paper-050);
}

.page-about .about-timeline__note {
  margin: 0;
  max-width: 42ch;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--paper-300);
}

.page-about .about-timeline__figure {
  border: 1px solid var(--ink-700);
  border-radius: var(--radius);
  overflow: hidden;
  margin: 0 0 2rem;
}

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

.page-about .about-tl {
  list-style: none;
  margin: 0;
  padding: 0 0 0 2rem;
  position: relative;
}

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: .6rem;
  top: .6rem;
  bottom: 1.2rem;
  width: 3px;
  background: linear-gradient(180deg, var(--cyan-400), var(--ink-700));
}

.page-about .about-node {
  position: relative;
  border-bottom: 1px solid var(--ink-700);
  transition: border-color var(--t-base);
}

.page-about .about-node::before {
  content: "";
  position: absolute;
  left: calc(-1.4rem - 7px);
  top: 1.3rem;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--ink-950);
  border: 2px solid var(--cyan-400);
  box-shadow: 0 0 0 4px rgba(45, 245, 212, .14);
  transition: background var(--t-base), box-shadow var(--t-base);
}

.page-about .about-node:hover {
  border-color: var(--cyan-400);
}

.page-about .about-node[open]::before {
  background: var(--coral-500);
  border-color: var(--coral-500);
  box-shadow: 0 0 0 4px rgba(255, 107, 74, .2);
}

.page-about .about-node > summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: baseline;
  gap: .85rem;
  padding: 1.05rem 0;
}

.page-about .about-node > summary::-webkit-details-marker {
  display: none;
}

.page-about .about-node > summary:focus-visible {
  outline: 2px solid var(--cyan-400);
  outline-offset: 2px;
}

.page-about .about-node__year {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--cyan-400);
  letter-spacing: .02em;
}

.page-about .about-node__title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  line-height: 1.4;
  color: var(--paper-050);
}

.page-about .about-node__toggle {
  position: relative;
  width: 1.1rem;
  height: 1.1rem;
  flex: 0 0 auto;
}

.page-about .about-node__toggle::before,
.page-about .about-node__toggle::after {
  content: "";
  position: absolute;
  background: var(--cyan-200);
  transition: transform var(--t-base), opacity var(--t-base);
}

.page-about .about-node__toggle::before {
  left: 0;
  top: 50%;
  width: 100%;
  height: 2px;
  transform: translateY(-50%);
}

.page-about .about-node__toggle::after {
  top: 0;
  left: 50%;
  width: 2px;
  height: 100%;
  transform: translateX(-50%);
}

.page-about .about-node[open] .about-node__toggle::after {
  transform: translateX(-50%) scaleY(0);
  opacity: 0;
}

.page-about .about-node__body {
  padding: 0 0 1.25rem;
  max-width: 56ch;
}

.page-about .about-node__body p {
  margin: 0;
  font-size: .93rem;
  line-height: 1.85;
  color: var(--paper-300);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  background: var(--paper-100);
}

.page-about .about-team__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .9rem;
  margin-bottom: 2rem;
}

.page-about .about-team .section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.8rem, 5vw, 2.9rem);
  line-height: 1.02;
  margin: .4rem 0 0;
}

.page-about .about-team__lede {
  margin: 0;
  max-width: 44ch;
  font-size: .95rem;
  line-height: 1.85;
  color: var(--ink-700);
}

.page-about .about-team__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.75rem;
}

.page-about .about-team__cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.1rem;
}

.page-about .about-team-card {
  position: relative;
  background: var(--paper-050);
  border: 2px solid var(--ink-800);
  border-radius: var(--radius);
  box-shadow: 4px 4px 0 var(--ink-800);
  padding: 1.35rem 1.15rem 1.15rem;
  transition: box-shadow var(--t-base), transform var(--t-base), border-color var(--t-base);
}

.page-about .about-team-card:hover,
.page-about .about-team-card:focus-within {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 var(--cyan-400);
  border-color: var(--ink-950);
}

.page-about .about-team-card__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: .78rem;
  letter-spacing: .14em;
  color: var(--coral-500);
  margin: 0 0 .55rem;
}

.page-about .about-team-card__title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.28rem;
  margin: 0 0 .5rem;
  color: var(--ink-950);
}

.page-about .about-team-card__line {
  margin: 0;
  font-size: .9rem;
  line-height: 1.7;
  color: var(--ink-700);
}

.page-about .about-team-card__detail {
  display: grid;
  grid-template-rows: 1fr;
  transition: grid-template-rows var(--t-base);
}

.page-about .about-team-card__detailInner {
  overflow: hidden;
}

.page-about .about-team-card__detailInner p {
  margin: .7rem 0 0;
  padding-top: .7rem;
  border-top: 1px dashed var(--paper-300);
  font-size: .86rem;
  line-height: 1.8;
  color: var(--slate-500);
}

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

.page-about .about-team__figure .media-frame {
  border: 2px solid var(--ink-800);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-900);
}

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

.page-about .about-team__figure .media-caption {
  display: block;
  margin-top: .8rem;
  font-family: var(--font-mono);
  font-size: .76rem;
  line-height: 1.6;
  color: var(--slate-500);
}

/* ---------- 覆盖数据带 ---------- */
.page-about .about-band {
  background: var(--paper-100);
  border-top: 2px solid var(--ink-800);
  border-bottom: 2px solid var(--ink-800);
  padding: var(--about-pad) 0;
  position: relative;
  overflow: hidden;
}

.page-about .about-band::after {
  content: "";
  position: absolute;
  right: -6rem;
  bottom: -8rem;
  width: 22rem;
  height: 22rem;
  border: 2px solid var(--paper-300);
  border-radius: 50%;
  pointer-events: none;
}

.page-about .about-band__head {
  position: relative;
  z-index: 1;
  margin-bottom: 2rem;
}

.page-about .about-band .section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.8rem, 5vw, 2.9rem);
  line-height: 1.02;
  margin: .4rem 0 .9rem;
}

.page-about .about-band__lede {
  margin: 0;
  max-width: 52ch;
  font-size: .95rem;
  line-height: 1.85;
  color: var(--ink-700);
}

.page-about .about-stats {
  position: relative;
  z-index: 1;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.4rem 1.1rem;
}

.page-about .about-stat {
  border-left: 3px solid var(--ink-800);
  padding-left: .9rem;
}

.page-about .about-stat__num {
  position: relative;
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(2rem, 7vw, 3.2rem);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--ink-950);
  padding-bottom: .35rem;
  transition: color var(--t-base);
}

.page-about .about-stat__num::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 4px;
  background: var(--cyan-400);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .5s ease-out;
}

.page-about .about-stat.is-revealed .about-stat__num::after {
  transform: scaleX(1);
}

.page-about .about-stat__label {
  display: block;
  margin-top: .45rem;
  font-size: .84rem;
  line-height: 1.65;
  color: var(--ink-700);
}

.page-about .about-band__foot {
  position: relative;
  z-index: 1;
  margin: 2rem 0 0;
  padding-top: 1.25rem;
  border-top: 1px solid var(--paper-300);
  font-size: .9rem;
  line-height: 1.85;
  color: var(--ink-700);
}

.page-about .about-band__link {
  color: var(--ink-950);
  text-decoration: none;
  border-bottom: 2px solid var(--coral-500);
  padding-bottom: 1px;
  font-weight: 700;
}

.page-about .about-band__link:hover,
.page-about .about-band__link:focus-visible {
  background: var(--coral-500);
  color: var(--ink-950);
}

/* ---------- 服务原则 ---------- */
.page-about .about-principles {
  background: var(--paper-050);
}

.page-about .about-principles__head {
  margin-bottom: 1.9rem;
}

.page-about .about-principles .section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.8rem, 5vw, 2.9rem);
  line-height: 1.02;
  margin: .4rem 0 0;
}

.page-about .about-principles__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
}

.page-about .about-principle {
  background: var(--ink-900);
  color: var(--paper-050);
  border: 1px solid var(--cyan-200);
  border-radius: var(--radius);
  padding: 1.3rem 1.15rem;
  transition: border-color var(--t-base), background var(--t-base);
}

.page-about .about-principle:hover {
  border-color: var(--cyan-400);
  background: var(--ink-700);
}

.page-about .about-principle__idx {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .1em;
  color: var(--cyan-400);
  margin-bottom: .5rem;
}

.page-about .about-principle__title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.2rem;
  margin: 0 0 .55rem;
  color: var(--paper-050);
}

.page-about .about-principle__text {
  margin: 0;
  font-size: .9rem;
  line-height: 1.85;
  color: var(--paper-300);
}

.page-about .about-principle__link {
  color: var(--cyan-200);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-400);
}

.page-about .about-principle__link:hover,
.page-about .about-principle__link:focus-visible {
  color: var(--ink-950);
  background: var(--cyan-400);
  border-bottom-color: var(--cyan-400);
}

/* ---------- 荣誉 ---------- */
.page-about .about-honors {
  background: var(--ink-950);
  color: var(--paper-050);
  padding: var(--about-pad) 0;
}

.page-about .about-honors__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.75rem;
}

.page-about .about-honors .eyebrow {
  color: var(--cyan-400);
}

.page-about .about-honors .section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.8rem, 5vw, 2.9rem);
  line-height: 1.02;
  margin: .4rem 0 1.1rem;
  color: var(--paper-050);
}

.page-about .about-honors__para {
  margin: 0 0 1rem;
  max-width: 54ch;
  font-size: .93rem;
  line-height: 1.9;
  color: var(--paper-300);
}

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

.page-about .about-honors__badge {
  border: 2px solid var(--coral-500);
  border-radius: var(--radius);
  padding: 1.4rem 1.2rem;
  background: var(--ink-900);
  box-shadow: 6px 6px 0 rgba(255, 107, 74, .28);
  align-self: start;
}

.page-about .about-honors__badgeNum {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.5rem, 4.6vw, 2.1rem);
  line-height: 1.1;
  color: var(--coral-500);
  margin: 0 0 .6rem;
}

.page-about .about-honors__badgeText {
  margin: 0;
  font-size: .88rem;
  line-height: 1.75;
  color: var(--paper-100);
}

/* ---------- 出口 ---------- */
.page-about .about-exits {
  background: var(--paper-100);
  border-top: 1px solid var(--paper-300);
}

.page-about .about-exits__head {
  margin-bottom: 1.6rem;
}

.page-about .about-exits .section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.7rem, 4.6vw, 2.6rem);
  line-height: 1.05;
  margin: .4rem 0 0;
}

.page-about .about-exits__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .9rem;
}

.page-about .about-exits__link {
  display: flex;
  flex-direction: column;
  gap: .35rem;
  padding: 1.1rem 1rem;
  background: var(--paper-050);
  border: 2px solid var(--ink-800);
  border-radius: var(--radius);
  box-shadow: 4px 4px 0 var(--ink-800);
  text-decoration: none;
  color: var(--ink-950);
  transition: transform var(--t-base), box-shadow var(--t-base), background var(--t-base);
}

.page-about .about-exits__link:hover,
.page-about .about-exits__link:focus-visible {
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 var(--cyan-400);
}

.page-about .about-exits__link--coral {
  background: var(--coral-500);
  border-color: var(--ink-950);
}

.page-about .about-exits__link--coral:hover,
.page-about .about-exits__link--coral:focus-visible {
  box-shadow: 7px 7px 0 var(--ink-950);
}

.page-about .about-exits__label {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.12rem;
}

.page-about .about-exits__desc {
  font-size: .84rem;
  line-height: 1.65;
  color: var(--ink-700);
}

.page-about .about-exits__link--coral .about-exits__desc {
  color: var(--ink-950);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

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

@media (min-width: 960px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, .85fr);
    align-items: end;
    gap: 3rem;
  }

  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    gap: 3rem;
  }

  .page-about .about-timeline__head {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: end;
    gap: 2rem;
  }

  .page-about .about-team__head {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: end;
    gap: 2rem;
  }

  .page-about .about-team__layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 1.6rem;
  }

  .page-about .about-team__cards {
    grid-template-columns: 1.1fr .95fr 1fr;
  }

  .page-about .about-honors__grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
    align-items: start;
    gap: 3rem;
  }

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

@media (min-width: 960px) and (hover: hover) {
  .page-about .about-team-card__detail {
    grid-template-rows: 0fr;
    transition: grid-template-rows var(--t-base);
  }

  .page-about .about-team-card:hover .about-team-card__detail,
  .page-about .about-team-card:focus-within .about-team-card__detail {
    grid-template-rows: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-stat__num::after {
    transform: scaleX(1);
    transition: none;
  }

  .page-about .about-team-card,
  .page-about .about-exits__link,
  .page-about .about-team-card__detail {
    transition: none;
  }
}
<<<END>>>