.page-about {
  --about-right: clamp(0px, 3vw, 40px);
  background-color: var(--ink);
  color: var(--warm);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
  padding-bottom: var(--s7);
}

.page-about p {
  margin: 0 0 var(--s2);
}

.page-about a {
  color: inherit;
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumb {
  padding-top: var(--s4);
  padding-bottom: var(--s2);
}

.page-about .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted-2);
}

.page-about .breadcrumb__item:not(:last-child)::after {
  content: "/";
  margin-left: 8px;
  color: var(--rock);
}

.page-about .breadcrumb__link {
  color: var(--cool);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

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

.page-about .breadcrumb__item [aria-current="page"] {
  color: var(--warm);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: var(--s4) 0 var(--s6);
  isolation: isolate;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(115deg, transparent 0 56%, rgba(200, 255, 61, 0.06) 56% 68%, transparent 68%),
    repeating-linear-gradient(90deg, rgba(169, 178, 195, 0.07) 0 1px, transparent 1px 96px);
  mask-image: linear-gradient(180deg, #000 0%, #000 62%, transparent 100%);
  -webkit-mask-image: linear-gradient(180deg, #000 0%, #000 62%, transparent 100%);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--s5);
  align-items: end;
}

.page-about .about-hero .eyebrow {
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  margin-bottom: var(--s3);
}

.page-about h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 7.4vw, 92px);
  line-height: 0.98;
  letter-spacing: -0.015em;
  margin: 0 0 var(--s3);
  text-wrap: balance;
}

.page-about .about-hero__lede {
  max-width: 40em;
  font-size: clamp(15px, 1.6vw, 18px);
  color: var(--cool);
  line-height: 1.75;
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: var(--s4);
  background-color: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-stat {
  background-color: var(--ink);
  padding: var(--s3) var(--s2) var(--s3) 0;
}

.page-about .about-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(18px, 4.6vw, 32px);
  line-height: 1.1;
  color: var(--lime);
  letter-spacing: -0.02em;
}

.page-about .about-stat__label {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted-2);
}

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

.page-about .about-hero__clip {
  position: relative;
  clip-path: polygon(0 0, 100% 0, 100% 88%, 8% 100%);
  background-color: var(--ink-2);
  border: 1px solid var(--line);
}

.page-about .about-hero__clip::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(200deg, rgba(11, 16, 38, 0.05), rgba(11, 16, 38, 0.7));
  pointer-events: none;
}

.page-about .about-hero__clip img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.78) contrast(1.06);
}

.page-about .about-hero__caption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted-2);
  padding-left: 4px;
  border-left: 2px solid var(--clay);
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline-section {
  position: relative;
  padding-top: var(--s5);
}

.page-about .about-timeline__head {
  max-width: 760px;
  margin-bottom: var(--s5);
}

.page-about .about-timeline__head .eyebrow {
  color: var(--orange);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  margin-bottom: var(--s2);
}

.page-about .about-timeline__head .section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 4.4vw, 52px);
  line-height: 1.06;
  letter-spacing: -0.01em;
  margin: 0 0 var(--s3);
  color: var(--warm);
}

.page-about .about-timeline__note {
  color: var(--cool);
  font-size: 15px;
  max-width: 44em;
}

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

.page-about .about-stage {
  position: relative;
  padding: var(--s4) 0 var(--s4) var(--s4);
  border-left: 1px solid var(--line);
}

.page-about .about-stage::before {
  content: "";
  position: absolute;
  left: -5px;
  top: calc(var(--s4) + 10px);
  width: 9px;
  height: 9px;
  background-color: var(--moss);
  transform: rotate(45deg);
}

.page-about .about-stage:nth-child(even)::before {
  background-color: var(--clay);
}

.page-about .about-stage__marker {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: var(--s2);
}

.page-about .about-stage__num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(38px, 9vw, 64px);
  line-height: 0.8;
  letter-spacing: -0.03em;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--moss);
}

.page-about .about-stage:first-child .about-stage__num {
  color: var(--lime);
  -webkit-text-stroke: 0;
}

.page-about .about-stage__year {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--cool);
}

.page-about .about-stage__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 3.4vw, 38px);
  line-height: 1.14;
  letter-spacing: -0.005em;
  margin: 0 0 var(--s2);
  color: var(--warm);
}

.page-about .about-stage__body > p {
  color: var(--cool);
  max-width: 46em;
}

.page-about .about-stage__points {
  list-style: none;
  margin: var(--s3) 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
  max-width: 46em;
}

.page-about .about-stage__points li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--cool);
}

.page-about .about-stage__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 10px;
  height: 1px;
  background-color: var(--orange);
}

.page-about .about-stage__link {
  margin: var(--s3) 0 0;
}

.page-about .about-stage__link a {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 255, 61, 0.45);
  padding-bottom: 2px;
}

.page-about .about-stage__link a:hover,
.page-about .about-stage__link a:focus-visible {
  border-bottom-color: var(--lime);
  color: var(--warm);
}

/* ---------- 团队数字卡 ---------- */
.page-about .about-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: var(--s3);
  background-color: var(--line);
  border: 1px solid var(--line);
  max-width: 46em;
}

.page-about .about-card {
  background-color: var(--ink-2);
  padding: var(--s3) var(--s2);
}

.page-about .about-card__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(24px, 5vw, 34px);
  line-height: 1;
  color: var(--lime);
}

.page-about .about-card__label {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted-2);
}

/* ---------- 图与折叠 ---------- */
.page-about .about-figure {
  margin: var(--s4) 0 0;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  background-color: var(--ink-2);
  object-fit: cover;
}

.page-about .about-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted-2);
}

.page-about .about-fold {
  margin-top: var(--s3);
  border: 1px solid var(--line-strong);
  background-color: var(--ink-2);
  max-width: 46em;
}

.page-about .about-fold summary {
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--lime);
}

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

.page-about .about-fold summary::after {
  content: "+";
  color: var(--cool);
  font-size: 16px;
  line-height: 1;
}

.page-about .about-fold[open] summary::after {
  content: "−";
  color: var(--orange);
}

.page-about .about-fold summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: -2px;
}

.page-about .about-fold p {
  margin: 0;
  padding: 0 16px 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--cool);
}

/* ---------- 结尾行动区 ---------- */
.page-about .about-cta {
  margin-top: var(--s7);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background-image: linear-gradient(100deg, rgba(255, 106, 43, 0.1) 0 26%, rgba(200, 255, 61, 0.08) 26% 40%, transparent 40%);
}

.page-about .about-cta__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--s4);
  padding-top: var(--s6);
  padding-bottom: var(--s6);
}

.page-about .about-cta .eyebrow {
  color: var(--orange);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  margin-bottom: var(--s2);
}

.page-about .about-cta__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 4.6vw, 52px);
  line-height: 1.06;
  margin: 0 0 var(--s2);
  color: var(--warm);
}

.page-about .about-cta__text p {
  color: var(--cool);
  max-width: 38em;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: var(--s3);
}

.page-about .about-cta__actions .btn {
  border-radius: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  padding: 13px 20px;
  text-decoration: none;
  display: inline-block;
}

.page-about .about-cta__mail {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--muted-2);
  margin: 0 0 6px;
}

.page-about .about-cta__mail span {
  color: var(--warm);
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 760px) {
  .page-about .about-cards {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: end;
    gap: var(--s6);
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 980px) {
  .page-about {
    padding-bottom: var(--s8);
  }

  .page-about .about-hero {
    padding: var(--s6) 0 var(--s7);
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    gap: var(--s6);
  }

  .page-about .about-stat {
    padding: var(--s4) var(--s3) var(--s4) 0;
  }

  .page-about .about-stage {
    display: grid;
    grid-template-columns: 190px minmax(0, 1fr);
    gap: var(--s5);
    padding: var(--s6) 0 var(--s6) var(--s6);
  }

  .page-about .about-stage__marker {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: 0;
    position: sticky;
    top: var(--s4);
    align-self: start;
  }

  .page-about .about-stage__num {
    font-size: 84px;
    -webkit-text-stroke-width: 1.6px;
  }

  .page-about .about-stage__year {
    letter-spacing: 0.36em;
    font-size: 11px;
  }

  .page-about .about-stage::before {
    top: calc(var(--s6) + 30px);
  }

  .page-about .about-stage--wide {
    grid-template-columns: 190px minmax(0, 1fr);
    padding-right: var(--about-right);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-stage,
  .page-about .about-timeline__head {
    transition: none;
    transform: none;
    opacity: 1;
  }
}
<<<END>>>