.page-about {
  --about-accent: var(--aqua);
  --about-gap: clamp(1rem, 2.6vw, 2rem);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding-top: calc(var(--header-h) + 1.5rem);
  background:
    radial-gradient(115% 85% at 92% 0%, rgba(31, 224, 206, 0.16), transparent 58%),
    radial-gradient(90% 70% at 0% 100%, rgba(255, 162, 43, 0.13), transparent 62%),
    var(--abyss-950);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--amber), var(--aqua) 55%, var(--magenta));
}

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

.page-about .about-hero__copy {
  min-width: 0;
}

.page-about .about-hero__title {
  margin: 0.7rem 0 1.1rem;
  font-size: clamp(2.2rem, 6vw, 4.9rem);
  line-height: 1.02;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-about .about-hero__title-line {
  display: block;
  color: var(--aqua);
}

.page-about .about-hero__lede {
  max-width: 58ch;
  margin: 0 0 1.6rem;
  color: var(--text);
  opacity: 0.92;
  font-size: clamp(0.98rem, 1.1vw, 1.08rem);
  line-height: 1.8;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-about .about-hero__figure {
  margin: 0;
  border: var(--line);
  background: var(--abyss-800);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

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

.page-about .about-hero__caption {
  padding: 0.7rem 0.9rem;
  border-top: var(--line);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.6;
  color: var(--muted);
}

.page-about .about-hero__stats {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin: 2rem 0 0;
  padding: 1.4rem 0 2.2rem;
  border-top: var(--line);
}

.page-about .about-stat {
  min-width: 0;
}

.page-about .about-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  font-weight: 600;
  line-height: 1.1;
  color: var(--amber);
}

.page-about .about-stat__label {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.8rem;
  line-height: 1.5;
  color: var(--muted);
}

/* ---------- 通用排版 ---------- */
.page-about .about-h2 {
  margin: 0.45rem 0 0.8rem;
  font-size: clamp(1.55rem, 3.4vw, 2.7rem);
  line-height: 1.14;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-about .about-p {
  margin: 0 0 0.95rem;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text);
}

.page-about .about-head {
  max-width: 60ch;
}

.page-about .about-head__lede {
  margin: 0;
  max-width: 50ch;
  font-size: 0.98rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .section--light .about-h2 {
  color: var(--ink);
}

.page-about .section--light .about-p {
  color: var(--ink);
}

.page-about .section--light .about-head__lede {
  color: var(--ink-soft);
}

.page-about .section--light .eyebrow {
  color: var(--ink-soft);
}

.page-about .about-link {
  display: inline-block;
  margin-top: 0.4rem;
  padding-bottom: 2px;
  border-bottom: 2px solid currentColor;
  color: var(--amber);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: color 0.25s var(--ease);
}

.page-about .section--light .about-link {
  color: var(--ink-soft);
}

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

/* ---------- 起点 ---------- */
.page-about .about-why__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5rem;
}

.page-about .about-quote {
  margin: 0 0 1.4rem;
  padding: 1rem 1.1rem 1rem 1.2rem;
  border-left: 6px solid var(--amber);
  background: var(--abyss-800);
  box-shadow: var(--shadow-hard);
}

.page-about .about-quote p {
  margin: 0;
  font-size: 1.02rem;
  line-height: 1.7;
  color: var(--text);
}

/* ---------- 版本时间轴 ---------- */
.page-about .about-timeline__figure {
  margin: 2.2rem 0 2.4rem;
  border: var(--line);
  background: var(--abyss-800);
  overflow: hidden;
}

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

.page-about .about-timeline__caption {
  padding: 0.7rem 0.9rem;
  border-top: var(--line);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.6;
  color: var(--muted);
}

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

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 2px;
  background: linear-gradient(180deg, var(--amber), var(--aqua) 52%, var(--magenta));
  opacity: 0.85;
}

.page-about .about-tl__item {
  position: relative;
  padding-left: 2.9rem;
  min-width: 0;
}

.page-about .about-tl__item--v1 { --about-accent: var(--amber); }
.page-about .about-tl__item--v2 { --about-accent: var(--aqua); }
.page-about .about-tl__item--v3 { --about-accent: var(--magenta); }

.page-about .about-tl__dot {
  position: absolute;
  left: 10px;
  top: 1.35rem;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--abyss-950);
  border: 3px solid var(--about-accent);
}

.page-about .about-tl__card {
  border: var(--line);
  background: var(--abyss-800);
  padding: 1.15rem 1.15rem 1.25rem;
  transition: border-color 0.28s var(--ease), transform 0.28s var(--ease);
}

.page-about .about-tl__card h3 {
  margin: 0.65rem 0 0.5rem;
  font-size: 1.12rem;
  line-height: 1.4;
  color: var(--text);
}

.page-about .about-tl__card p {
  margin: 0 0 0.5rem;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--text);
  opacity: 0.9;
}

.page-about .about-tl__note {
  font-size: 0.84rem !important;
  line-height: 1.7 !important;
  color: var(--muted) !important;
  opacity: 1 !important;
}

.page-about .about-tl__item:hover .about-tl__card,
.page-about .about-tl__item:focus-within .about-tl__card {
  border-color: var(--about-accent);
  transform: translateY(-3px);
}

/* ---------- 团队矩阵 ---------- */
.page-about .about-matrix {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  margin-top: 2rem;
}

.page-about .about-matrix__col {
  min-width: 0;
  padding: 1.3rem 1.15rem 1.4rem;
  border: 2px solid var(--abyss-650);
  border-top-width: 8px;
  border-top-color: var(--about-accent);
  background: #ffffff;
  transition: transform 0.28s var(--ease), box-shadow 0.28s var(--ease);
}

.page-about .about-matrix__col--amber { --about-accent: var(--amber); }
.page-about .about-matrix__col--aqua { --about-accent: var(--aqua); }
.page-about .about-matrix__col--magenta { --about-accent: var(--magenta); }

.page-about .about-matrix__col:hover,
.page-about .about-matrix__col:focus-visible,
.page-about .about-matrix__col:focus-within {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hard);
  outline: none;
}

.page-about .about-matrix__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 2.4rem;
  font-weight: 600;
  line-height: 1;
  color: var(--ink);
}

.page-about .about-matrix__col h3 {
  margin: 0.5rem 0 0.6rem;
  font-size: 1.05rem;
  color: var(--ink);
}

.page-about .about-matrix__desc {
  margin: 0 0 0.9rem;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-about .about-matrix__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.4rem;
}

.page-about .about-matrix__list li {
  position: relative;
  padding-left: 0.95rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--ink-soft);
}

.page-about .about-matrix__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 6px;
  background: var(--about-accent);
}

.page-about .about-team__figure {
  margin: 2rem 0 0;
  border: var(--line);
  background: var(--abyss-800);
  overflow: hidden;
}

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

.page-about .about-team__caption {
  padding: 0.7rem 0.9rem;
  border-top: var(--line);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 更新节奏 ---------- */
.page-about .about-cadence__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2rem;
}

.page-about .about-cadence__list {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.page-about .about-cadence__list li {
  display: grid;
  gap: 0.25rem;
  padding: 0.85rem 0 0.85rem 0.95rem;
  border-left: 4px solid var(--aqua);
  background: var(--abyss-800);
}

.page-about .about-cadence__list li:nth-child(2) { border-left-color: var(--amber); }
.page-about .about-cadence__list li:nth-child(3) { border-left-color: var(--magenta); }

.page-about .about-cadence__k {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--text);
}

.page-about .about-cadence__v {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-about .about-cats__title {
  margin: 0 0 1rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-about .about-cats__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.75rem;
}

.page-about .about-cats__item {
  position: relative;
  padding: 1rem 1rem 1.1rem 1.1rem;
  border: var(--line);
  border-left-width: 8px;
  border-left-color: var(--about-accent);
  background: var(--abyss-800);
}

.page-about .about-cats__item--amber { --about-accent: var(--amber); }
.page-about .about-cats__item--aqua { --about-accent: var(--aqua); }
.page-about .about-cats__item--magenta { --about-accent: var(--magenta); }
.page-about .about-cats__item--slate { --about-accent: var(--fog-300); }

.page-about .about-cats__num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--about-accent);
}

.page-about .about-cats__item h3 {
  margin: 0.35rem 0 0.35rem;
  font-size: 1rem;
  color: var(--text);
}

.page-about .about-cats__item p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 生态 ---------- */
.page-about .about-eco__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2rem;
  align-items: start;
}

.page-about .about-eco__panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.page-about .about-eco__stat {
  padding: 1.1rem 1rem;
  border: var(--line);
  background: var(--abyss-800);
}

.page-about .about-eco__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.25rem, 2.6vw, 1.7rem);
  font-weight: 600;
  line-height: 1.15;
  color: var(--aqua);
}

.page-about .about-eco__stat:nth-child(2) .about-eco__num { color: var(--amber); }
.page-about .about-eco__stat:nth-child(3) .about-eco__num { color: var(--magenta); }
.page-about .about-eco__stat:nth-child(4) .about-eco__num { color: var(--fog-300); }

.page-about .about-eco__unit {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--muted);
}

/* ---------- 下一步 ---------- */
.page-about .about-next__list {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  counter-reset: about-next;
}

.page-about .about-next__item {
  position: relative;
  padding: 1.2rem 1.15rem 1.3rem;
  border: 2px solid var(--abyss-650);
  background: #ffffff;
  transition: transform 0.28s var(--ease), border-color 0.28s var(--ease);
}

.page-about .about-next__item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background: linear-gradient(90deg, var(--amber), var(--aqua) 60%, var(--magenta));
}

.page-about .about-next__item:hover {
  transform: translateY(-4px);
  border-color: var(--aqua);
}

.page-about .about-next__idx {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  color: var(--ink-soft);
}

.page-about .about-next__item h3 {
  margin: 0.5rem 0 0.45rem;
  font-size: 1.05rem;
  color: var(--ink);
}

.page-about .about-next__item p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  background:
    radial-gradient(80% 120% at 100% 0%, rgba(240, 71, 142, 0.14), transparent 60%),
    var(--abyss-950);
  border-top: var(--line);
}

.page-about .about-cta__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5rem;
  align-items: center;
}

.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

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

@media (min-width: 900px) {
  .page-about .about-hero {
    padding-top: calc(var(--header-h) + 2.5rem);
  }

  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: clamp(2rem, 5vw, 4.5rem);
    padding-bottom: 1.5rem;
  }

  .page-about .about-hero__figure {
    transform: rotate(-1.4deg);
    transform-origin: center right;
  }

  .page-about .about-why__grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: clamp(2rem, 5vw, 4rem);
  }

  .page-about .about-why__head {
    position: sticky;
    top: calc(var(--header-h) + 1.5rem);
    align-self: start;
  }

  .page-about .about-cadence__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.5rem);
  }

  .page-about .about-eco__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: clamp(2rem, 5vw, 4rem);
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 2.5rem;
  }

  /* 时间轴左右摆动 */
  .page-about .about-tl::before {
    left: 50%;
    transform: translateX(-1px);
  }

  .page-about .about-tl {
    gap: 1.75rem;
  }

  .page-about .about-tl__item {
    width: 50%;
    padding-left: 0;
    padding-right: 0;
  }

  .page-about .about-tl__item:nth-child(odd) {
    justify-self: start;
    padding-right: 2.75rem;
  }

  .page-about .about-tl__item:nth-child(even) {
    justify-self: end;
    padding-left: 2.75rem;
  }

  .page-about .about-tl__dot {
    left: auto;
    right: -8px;
    top: 1.6rem;
  }

  .page-about .about-tl__item:nth-child(even) .about-tl__dot {
    right: auto;
    left: -8px;
  }
}

@media (min-width: 1180px) {
  .page-about .about-matrix {
    gap: 1.25rem;
  }

  .page-about .about-matrix__col {
    padding: 1.6rem 1.4rem 1.7rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-tl__card,
  .page-about .about-matrix__col,
  .page-about .about-next__item,
  .page-about .about-link {
    transition: none;
  }

  .page-about .about-tl__item:hover .about-tl__card,
  .page-about .about-tl__item:focus-within .about-tl__card,
  .page-about .about-matrix__col:hover,
  .page-about .about-matrix__col:focus-within,
  .page-about .about-next__item:hover {
    transform: none;
  }

  .page-about .about-hero__figure {
    transform: none;
  }
}
<<<PAGE_CSS_END>>>