.page-about {
  background-color: var(--ink);
  color: var(--ivory);
}

.page-about *,
.page-about *::before,
.page-about *::after {
  box-sizing: border-box;
}

.page-about .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--lime);
  margin: 0 0 10px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(20px, 3.6vw, 36px) clamp(48px, 7vw, 88px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  z-index: 0;
  top: -8%;
  right: -10%;
  width: 72%;
  height: 118%;
  background: linear-gradient(152deg, var(--night) 0%, rgba(10, 27, 45, 0.15) 100%);
  clip-path: polygon(26% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  z-index: 0;
  top: 0;
  right: 0;
  width: 72%;
  height: 100%;
  background-image:
    linear-gradient(rgba(247, 243, 232, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(247, 243, 232, 0.05) 1px, transparent 1px);
  background-size: 76px 76px;
  clip-path: polygon(26% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

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

.page-about .about-hero .breadcrumb-link {
  color: var(--sage);
}

.page-about .about-hero .breadcrumb-current {
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4.5vw, 48px);
  align-items: end;
  margin-top: clamp(24px, 4vw, 44px);
}

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

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(38px, 6.6vw, 84px);
  line-height: 1.03;
  letter-spacing: -0.02em;
  color: var(--ivory);
  margin: 0 0 20px;
  text-wrap: balance;
}

.page-about .about-hero__lead {
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.8;
  color: var(--sage);
  max-width: 46ch;
  margin: 0;
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: clamp(26px, 4vw, 40px);
  padding-top: 20px;
  border-top: 1px solid var(--line-dark);
}

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

.page-about .about-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.4vw, 42px);
  font-weight: 600;
  line-height: 1;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
}

.page-about .about-stat__num em {
  font-style: normal;
  font-size: 0.44em;
  color: var(--sage);
  margin-left: 4px;
}

.page-about .about-stat__label {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--sage);
}

.page-about .about-hero__media {
  position: relative;
  margin: 0;
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 32px), calc(100% - 32px) 100%, 0 100%);
  background: var(--forest);
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  filter: saturate(0.78) brightness(0.9);
}

.page-about .about-hero__media figcaption {
  position: absolute;
  left: 0;
  right: 40px;
  bottom: 0;
  padding: 28px 18px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  line-height: 1.6;
  color: var(--sage);
  background: linear-gradient(0deg, rgba(6, 24, 20, 0.94), rgba(6, 24, 20, 0));
}

/* ---------- 双栏主体 ---------- */
.page-about .about-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  padding-block: clamp(40px, 6vw, 88px) clamp(48px, 7vw, 96px);
}

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

.page-about .about-index__title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--sage);
  margin: 0 0 12px;
}

.page-about .about-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
}

.page-about .about-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-size: 13px;
  color: var(--sage);
  text-decoration: none;
  padding-bottom: 3px;
  border-bottom: 1px solid transparent;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-about .about-index__link span {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--lime);
  letter-spacing: 0.06em;
}

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

.page-about .about-index__link:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 4px;
}

/* ---------- 章节 ---------- */
.page-about .about-sections {
  min-width: 0;
}

.page-about .about-section {
  padding-block: clamp(28px, 4vw, 52px);
  border-top: 1px solid var(--line-soft);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-about .about-sections > .about-section:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-section__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px 18px;
  align-items: start;
  margin-bottom: clamp(18px, 2.4vw, 26px);
}

.page-about .about-section__num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.2vw, 42px);
  line-height: 1;
  font-weight: 500;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
}

.page-about .about-section h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 3.4vw, 44px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--ivory);
  margin: 0;
  text-wrap: balance;
}

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

.page-about .about-section__body > p {
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: rgba(247, 243, 232, 0.82);
  margin: 0 0 18px;
  max-width: 62ch;
}

.page-about .about-section__body > p:last-child {
  margin-bottom: 0;
}

.page-about .about-note {
  position: relative;
  margin-top: 22px;
  padding: 14px 16px 14px 20px;
  background: var(--forest);
  font-size: 14px !important;
  line-height: 1.75;
  color: var(--sage) !important;
  border-left: 2px solid var(--orange);
}

/* ---------- 团队 ---------- */
.page-about .team-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 26px;
}

.page-about .team-card {
  background: var(--forest);
  padding: 22px 20px 26px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.page-about .team-card__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(34px, 4vw, 48px);
  font-weight: 600;
  line-height: 1;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
}

.page-about .team-card__num::after {
  content: " 人";
  font-size: 0.3em;
  font-weight: 400;
  color: var(--sage);
  letter-spacing: 0.08em;
}

.page-about .team-card__title {
  font-family: var(--font-display);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 600;
  color: var(--ivory);
  margin: 14px 0 10px;
}

.page-about .team-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--sage);
}

/* ---------- 数据流程 ---------- */
.page-about .flow {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .flow__step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 18px 20px;
  background: var(--night);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
}

.page-about .flow__num {
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1.2;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
}

.page-about .flow__body h3 {
  font-family: var(--font-display);
  font-size: clamp(17px, 1.9vw, 21px);
  font-weight: 600;
  color: var(--ivory);
  margin: 0 0 8px;
}

.page-about .flow__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--sage);
}

.page-about .flow-media,
.page-about .timeline-media {
  position: relative;
  margin: 30px 0 0;
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 0 100%);
  background: var(--forest);
}

.page-about .flow-media img,
.page-about .timeline-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.78) brightness(0.92);
}

.page-about .flow-media img {
  aspect-ratio: 3 / 2;
}

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

.page-about .flow-media figcaption,
.page-about .timeline-media figcaption {
  padding: 12px 16px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.65;
  letter-spacing: 0.03em;
  color: var(--sage);
  background: var(--forest);
}

/* ---------- 产品 ---------- */
.page-about .product-list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-about .product-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 18px 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .product-item h3 {
  font-family: var(--font-display);
  font-size: clamp(18px, 2vw, 23px);
  font-weight: 600;
  color: var(--lime);
  margin: 0;
}

.page-about .product-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(247, 243, 232, 0.78);
}

.page-about .about-inline-cta {
  margin: 26px 0 0 !important;
}

/* ---------- 时间线 ---------- */
.page-about .timeline {
  list-style: none;
  margin: 30px 0 0;
  padding: 0 0 0 28px;
  position: relative;
  display: grid;
  gap: 26px;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, rgba(184, 255, 63, 0.75), rgba(184, 255, 63, 0.12));
}

.page-about .timeline__item {
  position: relative;
  min-width: 0;
}

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: -25px;
  top: 9px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 4px var(--ink);
}

.page-about .timeline__year {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(22px, 2.8vw, 30px);
  line-height: 1;
  color: var(--orange);
  letter-spacing: 0.03em;
  font-variant-numeric: tabular-nums;
  margin-bottom: 8px;
}

.page-about .timeline__item h3 {
  font-family: var(--font-display);
  font-size: clamp(17px, 1.9vw, 21px);
  font-weight: 600;
  color: var(--ivory);
  margin: 0 0 8px;
}

.page-about .timeline__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--sage);
  max-width: 60ch;
}

/* ---------- 合作面板 ---------- */
.page-about .about-section--panel {
  border-top: 0;
  padding-top: 8px;
}

.page-about .about-partners {
  position: relative;
  background: linear-gradient(148deg, var(--night) 0%, var(--ink) 82%);
  padding: clamp(26px, 4vw, 48px);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 40px), calc(100% - 40px) 100%, 0 100%);
}

.page-about .about-partners .about-section__head {
  margin-bottom: 20px;
}

.page-about .about-partners__lead {
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: rgba(247, 243, 232, 0.82);
  max-width: 62ch;
  margin: 0 0 26px;
}

.page-about .partners-stats {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  padding-top: 22px;
  border-top: 1px solid var(--line-dark);
}

.page-about .partner-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(32px, 4vw, 50px);
  font-weight: 600;
  line-height: 1;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
}

.page-about .partner-stat__label {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  line-height: 1.6;
  color: var(--sage);
}

.page-about .about-partners__note {
  margin: 26px 0 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--sage);
}

/* ---------- 工作方式 ---------- */
.page-about .practice-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  margin-top: 8px;
}

.page-about .practice-item {
  padding: 18px 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .practice-item:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .practice-item h3 {
  font-family: var(--font-display);
  font-size: clamp(17px, 1.9vw, 21px);
  font-weight: 600;
  color: var(--ivory);
  margin: 0 0 8px;
}

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

/* ---------- 结尾 CTA ---------- */
.page-about .about-cta {
  margin-top: clamp(32px, 5vw, 64px);
  padding-top: clamp(26px, 4vw, 44px);
  border-top: 1px solid var(--line-dark);
}

.page-about .about-cta__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  align-items: end;
}

.page-about .about-cta h2 {
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 36px);
  line-height: 1.2;
  font-weight: 700;
  color: var(--ivory);
  margin: 0;
  text-wrap: balance;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 中屏 ---------- */
@media (min-width: 700px) {
  .page-about .team-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .page-about .practice-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 32px;
  }

  .page-about .practice-item:nth-child(2) {
    border-top: 0;
    padding-top: 0;
  }

  .page-about .partners-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }

  .page-about .product-item {
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 24px;
    align-items: baseline;
    padding: 20px 0;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: clamp(36px, 5vw, 80px);
  }

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

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 32px;
  }

  .page-about .about-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1024px) {
  .page-about .about-body {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: clamp(40px, 5vw, 88px);
  }

  .page-about .about-index {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    align-self: start;
  }

  .page-about .about-index__list {
    display: grid;
    gap: 2px;
  }

  .page-about .about-index__link {
    width: 100%;
    padding: 8px 0 8px 12px;
    border-bottom: 0;
    border-left: 2px solid var(--line-soft);
  }

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

  .page-about .about-section__head {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 18px 24px;
  }

  .page-about .timeline {
    padding-left: 34px;
  }

  .page-about .timeline__item::before {
    left: -31px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-index__link {
    transition: none;
  }
}
<<<END>>>