.page-about {
  --about-gutter: clamp(20px, 5vw, 72px);
  --about-max: 1240px;
  --about-spine: rgba(245, 243, 236, 0.16);
  --about-hair: 1px solid rgba(245, 243, 236, 0.14);
  --about-muted: #A9A9C0;
  --about-ink-soft: rgba(16, 16, 24, 0.72);
  background: var(--ink-blue);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  overflow-wrap: break-word;
}

.page-about h1,
.page-about h2,
.page-about h3,
.page-about p,
.page-about figure,
.page-about blockquote {
  margin: 0;
}

.page-about a {
  color: inherit;
}

.page-about .about-inner {
  width: 100%;
  max-width: var(--about-max);
  margin-inline: auto;
  padding-inline: var(--about-gutter);
}

/* ---------- 面包屑 ---------- */

.page-about .about-crumb {
  max-width: var(--about-max);
  margin-inline: auto;
  padding: clamp(16px, 3vw, 26px) var(--about-gutter) 0;
}

.page-about .about-crumb a {
  text-decoration: none;
  color: var(--about-muted);
  transition: color 160ms ease;
}

.page-about .about-crumb a:hover,
.page-about .about-crumb a:focus-visible {
  color: var(--lime);
}

/* ---------- 首屏：左页大图 + 右页文字 ---------- */

.page-about .about-hero {
  display: grid;
  grid-template-columns: 1fr;
  border-bottom: var(--about-hair);
}

.page-about .about-hero__media {
  position: relative;
  overflow: hidden;
  background: var(--plum);
  min-height: clamp(240px, 52vw, 420px);
}

.page-about .about-hero__media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 60%;
  filter: saturate(0.88) contrast(1.06);
}

.page-about .about-hero__stamp {
  position: absolute;
  left: clamp(16px, 3vw, 28px);
  bottom: clamp(16px, 3vw, 28px);
  padding: 6px 12px;
  border: 1px solid rgba(245, 243, 236, 0.4);
  background: rgba(8, 10, 24, 0.7);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--paper);
}

.page-about .about-hero__body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(30px, 6vw, 72px) var(--about-gutter) clamp(36px, 6vw, 80px);
}

.page-about .about-hero__kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--lime);
  margin-bottom: clamp(14px, 2vw, 22px);
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 5vw, 60px);
  line-height: 1.16;
  letter-spacing: -0.03em;
  max-width: 18ch;
}

.page-about .about-hero__lede {
  margin-top: clamp(16px, 2.4vw, 26px);
  max-width: 46ch;
  font-size: clamp(15px, 1.15vw, 17px);
  color: var(--about-muted);
}

.page-about .about-hero__facts {
  list-style: none;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: clamp(20px, 3vw, 32px) 0 0;
  border-top: var(--about-hair);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px clamp(16px, 3vw, 28px);
}

.page-about .about-hero__facts b {
  display: block;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(21px, 2.8vw, 30px);
  line-height: 1.1;
  letter-spacing: 0.01em;
  color: var(--lime);
}

.page-about .about-hero__facts span {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--about-muted);
}

@media (min-width: 900px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 1fr);
    min-height: 540px;
  }

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

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

/* ---------- 章节通用 ---------- */

.page-about .about-chapter {
  padding-block: clamp(54px, 8vw, 112px);
  background: var(--ink-blue);
}

.page-about .about-chapter--plum {
  background: var(--plum);
}

.page-about .about-chapter--teal {
  background: var(--teal);
}

.page-about .about-chapter--wine {
  background: var(--wine);
}

.page-about .chapter-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(16px, 3vw, 36px);
  align-items: start;
  margin-bottom: clamp(30px, 5vw, 56px);
}

.page-about .chapter-num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(30px, 4.6vw, 60px);
  line-height: 0.86;
  letter-spacing: 0.02em;
  color: var(--lime);
}

.page-about .chapter-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(23px, 3.4vw, 40px);
  line-height: 1.24;
  letter-spacing: -0.02em;
}

.page-about .chapter-lead {
  margin-top: 12px;
  max-width: 48ch;
  font-size: clamp(15px, 1.1vw, 17px);
  color: var(--about-muted);
}

/* ---------- 跨页双栏 ---------- */

.page-about .about-spread {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 44px);
}

.page-about .about-spread__col p + p {
  margin-top: 1.15em;
}

.page-about .about-spread__col p {
  max-width: 62ch;
}

@media (min-width: 900px) {
  .page-about .about-spread {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 0;
    align-items: start;
  }

  .page-about .about-spread__col + .about-spread__col {
    padding-left: clamp(32px, 5vw, 68px);
    border-left: 1px solid var(--about-spine);
  }
}

/* ---------- 引用段落 ---------- */

.page-about .pull-quote {
  position: relative;
  padding: clamp(24px, 3.2vw, 40px);
  background: var(--wine);
  border: 1px solid rgba(227, 196, 107, 0.55);
  box-shadow: var(--shadow-layer);
  transform: rotate(-0.7deg);
}

.page-about .pull-quote p {
  font-family: var(--font-sub);
  font-weight: 700;
  font-size: clamp(18px, 2.1vw, 24px);
  line-height: 1.6;
  letter-spacing: -0.01em;
}

.page-about .pull-quote cite {
  display: block;
  margin-top: clamp(16px, 2.4vw, 24px);
  padding-top: clamp(12px, 2vw, 18px);
  border-top: 1px solid rgba(227, 196, 107, 0.4);
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: rgba(245, 243, 236, 0.78);
}

/* ---------- 小组卡片 ---------- */

.page-about .crew-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2.4vw, 26px);
}

.page-about .crew-card {
  padding: clamp(22px, 3vw, 34px);
  background: rgba(8, 10, 24, 0.55);
  border: 1px solid rgba(245, 243, 236, 0.16);
  box-shadow: var(--shadow-layer);
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.page-about .crew-card:hover,
.page-about .crew-card:focus-within {
  transform: translateY(-4px);
  border-color: var(--lime);
  box-shadow: 0 4px 0 rgba(8, 10, 24, 0.4), 0 16px 34px rgba(8, 10, 24, 0.55);
}

.page-about .crew-card__tag {
  display: inline-block;
  margin-bottom: 16px;
  padding: 4px 10px;
  border: 1px solid rgba(227, 196, 107, 0.55);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--tag-gold);
}

.page-about .crew-card__title {
  font-family: var(--font-sub);
  font-weight: 700;
  font-size: clamp(19px, 1.9vw, 23px);
  line-height: 1.35;
  letter-spacing: -0.01em;
  margin-bottom: 14px;
}

.page-about .crew-card p {
  font-size: 15px;
  color: var(--about-muted);
}

.page-about .crew-card__list {
  list-style: none;
  margin: 18px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid rgba(245, 243, 236, 0.14);
}

.page-about .crew-card__list li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 14px;
  color: var(--paper);
}

.page-about .crew-card__list li + li {
  margin-top: 10px;
}

.page-about .crew-card__list li::before {
  content: "";
  flex: 0 0 6px;
  height: 6px;
  background: var(--lime);
  transform: translateY(-3px);
}

@media (min-width: 780px) {
  .page-about .crew-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 数据链路 ---------- */

.page-about .pipeline {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(34px, 5vw, 64px);
}

.page-about .chain {
  --chain-gutter: clamp(24px, 3vw, 38px);
  list-style: none;
  margin: 0;
  padding: 0 0 0 var(--chain-gutter);
  border-left: 1px solid rgba(198, 255, 61, 0.32);
}

.page-about .chain__step {
  position: relative;
  padding-bottom: clamp(22px, 3vw, 34px);
}

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

.page-about .chain__step::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--chain-gutter) - 5px);
  top: 8px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--lime);
}

.page-about .chain__time {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--lime);
}

.page-about .chain__label {
  margin-top: 8px;
  font-family: var(--font-sub);
  font-weight: 700;
  font-size: clamp(18px, 1.9vw, 22px);
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.page-about .chain__desc {
  margin-top: 8px;
  max-width: 46ch;
  font-size: 15px;
  color: var(--about-muted);
}

.page-about .pipeline__media {
  background: var(--ink-blue);
  border: 1px solid rgba(245, 243, 236, 0.18);
  box-shadow: var(--shadow-layer);
}

.page-about .pipeline__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-about .pipeline__media figcaption {
  padding: 14px 18px;
  border-top: 1px solid rgba(245, 243, 236, 0.14);
  font-size: 13px;
  color: var(--about-muted);
}

@media (min-width: 980px) {
  .page-about .pipeline {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 1fr);
    align-items: start;
  }
}

/* ---------- 发展阶段 ---------- */

.page-about .era-banner {
  margin-bottom: clamp(32px, 5vw, 56px);
}

.page-about .era-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
  border: 1px solid rgba(245, 243, 236, 0.16);
}

.page-about .era-banner figcaption {
  margin-top: 12px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--about-muted);
}

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

.page-about .era {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(16px, 2.6vw, 32px);
  padding: clamp(20px, 3vw, 30px) 0;
  border-top: 1px solid rgba(245, 243, 236, 0.16);
}

.page-about .era:last-child {
  border-bottom: 1px solid rgba(245, 243, 236, 0.16);
}

.page-about .era__mark {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(15px, 1.6vw, 19px);
  letter-spacing: 0.06em;
  color: var(--lime);
  padding-top: 4px;
}

.page-about .era__title {
  font-family: var(--font-sub);
  font-weight: 700;
  font-size: clamp(18px, 1.9vw, 22px);
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}

.page-about .era__body p {
  max-width: 64ch;
  font-size: 15px;
  color: var(--about-muted);
}

@media (min-width: 860px) {
  .page-about .era {
    grid-template-columns: 84px minmax(0, 1fr);
    gap: clamp(24px, 3vw, 44px);
  }

  .page-about .era__body {
    display: grid;
    grid-template-columns: minmax(0, 240px) minmax(0, 1fr);
    gap: clamp(20px, 3vw, 40px);
    align-items: baseline;
  }

  .page-about .era__title {
    margin-bottom: 0;
  }
}

/* ---------- 合作生态 ---------- */

.page-about .eco-lede {
  max-width: 60ch;
  font-size: clamp(15px, 1.15vw, 17px);
  color: var(--about-muted);
  margin-bottom: clamp(24px, 3.4vw, 38px);
}

.page-about .partner-cloud {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .partner-tag {
  display: inline-flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 18px;
  background: rgba(8, 10, 24, 0.5);
  border: 1px solid rgba(245, 243, 236, 0.22);
  border-left-width: 3px;
  font-size: 15px;
  transition: border-color 160ms ease, transform 160ms ease;
}

.page-about .partner-tag--teal {
  border-left-color: var(--teal);
}

.page-about .partner-tag--blue {
  border-left-color: var(--electric);
}

.page-about .partner-tag--gold {
  border-left-color: var(--tag-gold);
}

.page-about .partner-tag:hover,
.page-about .partner-tag:focus-within {
  border-color: var(--lime);
  transform: translateY(-3px);
}

.page-about .partner-tag__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--lime);
}

.page-about .eco-notes {
  margin-top: clamp(28px, 4vw, 44px);
  padding-top: clamp(20px, 3vw, 30px);
  border-top: var(--about-hair);
}

.page-about .eco-notes p {
  max-width: 68ch;
  font-size: 15px;
  color: var(--about-muted);
}

/* ---------- 荣誉 ---------- */

.page-about .award-plate {
  max-width: 780px;
  padding: clamp(26px, 3.6vw, 48px);
  background: var(--paper);
  color: var(--ink);
  border: 1px solid rgba(227, 196, 107, 0.75);
  box-shadow: var(--shadow-layer);
  transform: rotate(-0.4deg);
}

.page-about .award-plate .tag {
  margin-bottom: clamp(16px, 2vw, 22px);
}

.page-about .award-plate__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(20px, 2.6vw, 30px);
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 14px;
}

.page-about .award-plate__text {
  font-size: 15px;
  line-height: 1.8;
  color: var(--about-ink-soft);
  max-width: 58ch;
}

.page-about .award-note {
  margin-top: clamp(26px, 3.6vw, 40px);
  max-width: 66ch;
  font-size: 15px;
  color: rgba(245, 243, 236, 0.82);
}

/* ---------- 联系入口 ---------- */

.page-about .cta-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .cta-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  height: 100%;
  padding: clamp(18px, 2.2vw, 24px);
  background: rgba(8, 10, 24, 0.45);
  border: 1px solid rgba(245, 243, 236, 0.2);
  text-decoration: none;
  transition: transform 160ms ease, border-color 160ms ease, background-color 160ms ease;
}

.page-about .cta-card:hover,
.page-about .cta-card:focus-visible {
  transform: translateY(-4px);
  border-color: var(--lime);
  background: rgba(8, 10, 24, 0.75);
}

.page-about .cta-card__label {
  font-family: var(--font-sub);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.01em;
}

.page-about .cta-card__desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--about-muted);
}

.page-about .cta-note {
  margin-top: clamp(22px, 3vw, 32px);
  font-size: 14px;
  color: var(--about-muted);
  max-width: 62ch;
}

.page-about .cta-note a {
  color: var(--lime);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about a:focus-visible,
.page-about .toc-dots__dot:focus-visible {
  outline: 2px solid var(--electric);
  outline-offset: 3px;
}

@media (min-width: 720px) {
  .page-about .cta-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
}

@media (min-width: 1080px) {
  .page-about .cta-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .crew-card,
  .page-about .cta-card,
  .page-about .partner-tag {
    transition: none;
    transform: none;
  }
}
<<<END>>>