.page-about {
  --about-line: rgba(143, 163, 184, 0.16);
  --about-line-strong: rgba(143, 163, 184, 0.28);
  --about-tl-pad: 26px;
  background: var(--ink);
  color: var(--bone);
}

.page-about .shell {
  width: 100%;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(108px, 20vw, 196px) 0 clamp(40px, 7vw, 76px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 90% at 82% 8%, rgba(53, 224, 208, 0.14), transparent 58%),
    linear-gradient(148deg, var(--ink-2) 0%, rgba(14, 29, 51, 0.35) 46%, transparent 78%);
  clip-path: polygon(0 0, 100% 0, 100% 64%, 0 100%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: -10%;
  right: -10%;
  top: 46%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(53, 224, 208, 0.55), rgba(232, 180, 90, 0.35), transparent);
  transform: rotate(-6deg);
  pointer-events: none;
}

.page-about .about-hero .shell {
  position: relative;
  z-index: 1;
}

.page-about .breadcrumb {
  margin-bottom: clamp(28px, 5vw, 52px);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(32px, 6vw, 56px);
}

.page-about .about-hero__title {
  margin: 10px 0 0;
  font-size: clamp(34px, 8vw, 68px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 900;
}

.page-about .about-hero__sub {
  margin: 20px 0 0;
  max-width: 58ch;
  color: var(--mist);
  font-size: 16px;
  line-height: 1.8;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .about-facts {
  border-top: 1px solid var(--about-line-strong);
  align-self: end;
}

.page-about .about-facts__row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 4px 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-facts__k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-about .about-facts__v {
  font-size: 15px;
  font-weight: 700;
  color: var(--bone);
  text-align: right;
}

/* ---------- 章节目录 ---------- */
.page-about .about-index {
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
  background: rgba(14, 29, 51, 0.55);
}

.page-about .about-index__list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: 0;
  padding: 16px 0;
  list-style: none;
}

.page-about .about-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  color: var(--mist);
  font-size: 14px;
  text-decoration: none;
  transition: color 180ms ease-out, border-color 180ms ease-out;
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  color: var(--bone);
  border-bottom-color: var(--cyan);
}

.page-about .about-index__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

/* ---------- 通用章节 ---------- */
.page-about .about-sec {
  padding: clamp(44px, 8vw, 92px) 0;
}

.page-about .about-sec--band {
  background: linear-gradient(180deg, rgba(14, 29, 51, 0.75), rgba(6, 15, 28, 0));
  border-top: 1px solid var(--about-line);
}

.page-about .about-head {
  display: grid;
  gap: 12px;
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-about .about-head__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-about .about-title {
  margin: 0;
  max-width: 24ch;
  font-size: clamp(26px, 4.6vw, 42px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  font-weight: 800;
}

.page-about .about-head__sub {
  margin: 0;
  max-width: 62ch;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.8;
}

/* ---------- 01 起点 ---------- */
.page-about .about-origin__grid {
  align-items: start;
}

.page-about .about-origin__prose p {
  margin: 0 0 18px;
  color: var(--mist);
  font-size: 16px;
  line-height: 1.85;
  max-width: 66ch;
}

.page-about .about-origin__panel {
  margin-top: 8px;
  padding: 24px;
  border: 1px solid var(--about-line);
  border-left: 2px solid var(--coral);
  background: rgba(14, 29, 51, 0.7);
}

.page-about .about-origin__panel-title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--coral);
}

.page-about .about-origin__list {
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
}

.page-about .about-origin__list li {
  position: relative;
  padding: 9px 0 9px 18px;
  border-bottom: 1px solid var(--about-line);
  font-size: 14px;
  line-height: 1.7;
  color: var(--bone);
}

.page-about .about-origin__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 17px;
  width: 6px;
  height: 1px;
  background: var(--cyan);
}

.page-about .about-origin__link {
  font-size: 14px;
  color: var(--cyan);
}

/* ---------- 媒体位 ---------- */
.page-about .media {
  position: relative;
  display: block;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--about-line);
  border-radius: var(--radius);
  background: var(--ink-2);
}

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

.page-about .media--wide {
  aspect-ratio: 16 / 9;
}

.page-about .media--tall {
  aspect-ratio: 4 / 3;
}

.page-about .media__scan {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(180deg, rgba(242, 237, 227, 0.05) 0 1px, transparent 1px 4px);
  pointer-events: none;
}

/* ---------- 02 时间线 ---------- */
.page-about .about-tl-media {
  margin-bottom: clamp(28px, 4vw, 48px);
}

.page-about .about-tl-media__cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 10px 16px;
  background: linear-gradient(0deg, rgba(6, 15, 28, 0.92), rgba(6, 15, 28, 0));
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-about .about-timeline {
  position: relative;
  margin: 0;
  padding: 4px 0 0 var(--about-tl-pad);
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  bottom: 24px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), var(--gold) 54%, var(--coral));
  opacity: 0.5;
}

.page-about .about-tl {
  position: relative;
  padding: 0 0 clamp(30px, 5vw, 48px);
}

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 12px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(232, 180, 90, 0.14);
  transition: box-shadow 180ms ease-out, background 180ms ease-out;
}

.page-about .about-tl:hover::before,
.page-about .about-tl:focus-within::before {
  background: var(--cyan);
  box-shadow: 0 0 0 6px rgba(53, 224, 208, 0.16);
}

.page-about .about-tl__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-bottom: 8px;
}

.page-about .about-tl__year {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(34px, 8vw, 62px);
  line-height: 0.95;
  letter-spacing: -0.03em;
  color: var(--bone);
  transition: color 180ms ease-out;
}

.page-about .about-tl:hover .about-tl__year {
  color: var(--gold);
}

.page-about .about-tl__month {
  font-style: normal;
  font-size: 0.34em;
  letter-spacing: 0.04em;
  color: var(--mist);
  margin-left: 4px;
}

.page-about .about-tl__title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--bone);
}

.page-about .about-tl__body p {
  margin: 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 03 团队（米白阅读区） ---------- */
.page-about .about-bone {
  background: var(--bone);
  color: var(--ink);
}

.page-about .about-bone .about-head__num {
  color: var(--clay);
}

.page-about .about-bone .about-head__sub {
  color: var(--rock);
}

.page-about .about-team-media {
  border-color: rgba(6, 15, 28, 0.16);
  margin-bottom: clamp(22px, 3.5vw, 36px);
}

.page-about .about-team-bar {
  display: grid;
  gap: 6px;
}

.page-about .about-team-seg {
  position: relative;
  padding: 20px 20px 22px;
  border: 1px solid rgba(6, 15, 28, 0.16);
  border-top: 2px solid var(--rock);
  background: rgba(255, 255, 255, 0.42);
  transition: border-color 180ms ease-out, transform 180ms ease-out, background 180ms ease-out;
}

.page-about .about-team-seg:hover,
.page-about .about-team-seg:focus-within {
  transform: translateY(-2px);
  border-color: var(--cyan);
  background: rgba(255, 255, 255, 0.78);
}

.page-about .about-team-seg--cs {
  border-top-color: var(--coral);
}

.page-about .about-team-seg--content {
  border-top-color: var(--clay);
}

.page-about .about-team-seg--tech {
  border-top-color: var(--moss);
}

.page-about .about-team-seg__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(34px, 6vw, 48px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.page-about .about-team-seg__role {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--clay);
}

.page-about .about-team-seg--tech .about-team-seg__role {
  color: var(--moss);
}

.page-about .about-team-seg__desc {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--rock);
}

/* ---------- 04 服务承诺 ---------- */
.page-about .about-metrics {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-metric {
  display: grid;
  gap: 8px;
  padding: clamp(20px, 3vw, 28px) 0;
  border-top: 1px solid var(--about-line-strong);
}

.page-about .about-metric:last-child {
  border-bottom: 1px solid var(--about-line-strong);
}

.page-about .about-metric__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(38px, 8vw, 58px);
  line-height: 1;
  letter-spacing: -0.03em;
}

.page-about .about-metric__num--cyan {
  color: var(--cyan);
}

.page-about .about-metric__num--gold {
  color: var(--gold);
}

.page-about .about-metric__num--coral {
  color: var(--coral);
}

.page-about .about-metric__unit {
  font-size: 0.42em;
  letter-spacing: 0.04em;
  margin-left: 6px;
  color: var(--mist);
}

.page-about .about-metric__title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
}

.page-about .about-metric__body p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-promise-note {
  display: grid;
  gap: 14px;
  align-items: start;
  margin-top: clamp(24px, 4vw, 36px);
  padding: 20px 22px;
  border-left: 2px solid var(--cyan);
  background: rgba(53, 224, 208, 0.06);
}

.page-about .about-promise-note p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--bone);
}

.page-about .about-promise-note .link-under {
  justify-self: start;
  font-size: 14px;
  color: var(--cyan);
}

/* ---------- 05 合作生态 ---------- */
.page-about .about-network__grid {
  align-items: start;
}

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

.page-about .about-net {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 14px;
  padding: 18px 0;
  border-top: 1px solid var(--about-line);
  transition: border-color 180ms ease-out;
}

.page-about .about-net:hover {
  border-top-color: var(--cyan);
}

.page-about .about-net__count {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--gold);
}

.page-about .about-net__title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
}

.page-about .about-net__body p {
  margin: 0;
  max-width: 56ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-net-media {
  margin: 6px 0 0;
}

.page-about .about-net-media__cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 9px 14px;
  background: linear-gradient(0deg, rgba(6, 15, 28, 0.92), rgba(6, 15, 28, 0));
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

/* ---------- 06 荣誉 ---------- */
.page-about .about-honor {
  display: grid;
  gap: 0;
  border: 1px solid var(--about-line-strong);
  border-left: 2px solid var(--gold);
  background: linear-gradient(120deg, rgba(232, 180, 90, 0.09), rgba(14, 29, 51, 0.6) 55%);
}

.page-about .about-honor__main {
  padding: clamp(22px, 4vw, 34px);
}

.page-about .about-honor__title {
  margin: 14px 0 10px;
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.page-about .about-honor__main p {
  margin: 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-honor__side {
  padding: 0 clamp(22px, 4vw, 34px) clamp(22px, 4vw, 34px);
  border-top: 1px solid var(--about-line);
}

.page-about .about-honor__item {
  padding: 16px 0;
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-honor__year {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-about .about-honor__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--bone);
}

.page-about .about-honor__link {
  display: inline-block;
  margin-top: 18px;
  font-size: 14px;
  color: var(--cyan);
}

/* ---------- 07 收束 ---------- */
.page-about .about-cta {
  position: relative;
  padding: clamp(56px, 10vw, 120px) 0 clamp(64px, 12vw, 132px);
}

.page-about .about-cta__inner {
  display: grid;
  gap: clamp(26px, 4vw, 40px);
}

.page-about .about-cta__title {
  margin-top: 12px;
  max-width: 20ch;
  font-size: clamp(28px, 5.4vw, 46px);
}

.page-about .about-cta__sub {
  margin: 18px 0 0;
  max-width: 52ch;
  color: var(--mist);
  font-size: 16px;
  line-height: 1.8;
}

.page-about .about-cta__actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
  padding-top: 6px;
}

.page-about .about-cta__actions .btn {
  width: 100%;
  justify-content: center;
  text-align: center;
}

.page-about .about-cta__link {
  font-size: 14px;
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid var(--about-line-strong);
  padding-bottom: 2px;
  transition: color 180ms ease-out, border-color 180ms ease-out;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-team-bar {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .about-cta__actions {
    flex-direction: row;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px 18px;
  }

  .page-about .about-cta__actions .btn {
    width: auto;
  }

  .page-about .about-promise-note {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: 7fr 5fr;
    align-items: end;
    gap: clamp(40px, 5vw, 72px);
  }

  .page-about .about-origin__grid {
    grid-template-columns: 7fr 5fr;
    gap: var(--col-gap);
  }

  .page-about .about-network__grid {
    grid-template-columns: 7fr 5fr;
    gap: var(--col-gap);
  }

  .page-about .about-timeline {
    --about-tl-pad: 120px;
  }

  .page-about .about-tl {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 0 clamp(24px, 4vw, 48px);
    align-items: start;
  }

  .page-about .about-tl::before {
    left: calc(-1 * var(--about-tl-pad) - 4px);
    top: 22px;
  }

  .page-about .about-tl__meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 0;
  }

  .page-about .about-tl__year {
    font-size: clamp(56px, 6vw, 84px);
  }

  .page-about .about-tl__title {
    font-size: 20px;
  }

  .page-about .about-team-bar {
    grid-template-columns: 47.8fr 26.1fr 26.1fr;
    gap: 8px;
  }

  .page-about .about-team-seg {
    min-height: 100%;
  }

  .page-about .about-metric {
    grid-template-columns: 260px 1fr;
    gap: 24px;
    align-items: start;
  }

  .page-about .about-honor {
    grid-template-columns: 7fr 5fr;
  }

  .page-about .about-honor__side {
    border-top: 0;
    border-left: 1px solid var(--about-line);
    padding-top: clamp(22px, 4vw, 34px);
  }

  .page-about .about-cta__inner {
    grid-template-columns: 7fr 5fr;
    align-items: end;
    gap: clamp(32px, 5vw, 72px);
  }

  .page-about .about-cta__actions {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-index__link,
  .page-about .about-tl::before,
  .page-about .about-tl__year,
  .page-about .about-team-seg,
  .page-about .about-net,
  .page-about .about-cta__link {
    transition: color 120ms ease-out, border-color 120ms ease-out;
  }

  .page-about .about-team-seg:hover,
  .page-about .about-team-seg:focus-within {
    transform: none;
  }
}
<<<PAGE_CSS_END>>>