.page-about {
  background: var(--bg);
  color: var(--text-1);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(104px, 15vw, 176px) 0 clamp(44px, 6vw, 80px);
  border-bottom: 1px solid var(--hairline);
  background:
    radial-gradient(115% 90% at 82% -18%, rgba(20, 80, 122, .78), rgba(4, 18, 31, 0) 62%),
    linear-gradient(180deg, var(--abyss-900) 0%, var(--abyss-950) 84%);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(201, 214, 226, .07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(201, 214, 226, .07) 1px, transparent 1px);
  background-size: 120px 120px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, rgba(0, 0, 0, .3) 66%, transparent 100%);
  mask-image: linear-gradient(180deg, #000 0%, rgba(0, 0, 0, .3) 66%, transparent 100%);
}

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

.page-about .about-hero__index {
  margin: 30px 0 22px;
  font-size: var(--fs-12);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--spark-400);
}

.page-about .about-hero__title {
  margin: 0;
  max-width: 16em;
  font-family: var(--font-sans);
  font-size: clamp(38px, 7.2vw, 90px);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -.035em;
  color: var(--text-1);
}

.page-about .about-hero__lede {
  margin: 30px 0 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.4vw, 18px);
  line-height: 1.85;
  color: var(--text-2);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: 1fr;
  margin: 48px 0 0;
  border-top: 1px solid var(--hairline);
}

.page-about .about-fact {
  margin: 0;
  padding: 18px 0;
  border-bottom: 1px solid var(--hairline-soft);
}

.page-about .about-fact:last-child {
  border-bottom: 0;
}

.page-about .about-fact__label {
  margin: 0;
  font-size: var(--fs-12);
  letter-spacing: .18em;
  color: var(--text-3);
}

.page-about .about-fact__value {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(28px, 3.4vw, 38px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--gold-400);
}

.page-about .about-fact__value span {
  margin-left: .3em;
  font-size: .4em;
  font-weight: 500;
  letter-spacing: .06em;
  color: var(--text-2);
}

.page-about .about-fact__desc {
  margin: 10px 0 0;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--text-3);
}

@media (min-width: 640px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-fact {
    padding: 20px 24px 20px 0;
    border-bottom: 0;
    border-right: 1px solid var(--hairline-soft);
  }

  .page-about .about-fact:nth-child(2n) {
    padding: 20px 0 20px 24px;
    border-right: 0;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-fact,
  .page-about .about-fact:nth-child(2n) {
    padding: 22px 26px 22px 0;
    border-right: 1px solid var(--hairline-soft);
    border-bottom: 0;
  }

  .page-about .about-fact:first-child {
    padding-left: 0;
  }

  .page-about .about-fact:last-child {
    padding-right: 0;
    border-right: 0;
  }
}

/* ---------- 主栅格：粘性索引 + 长文 ---------- */

.page-about .about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  padding-top: clamp(44px, 6vw, 84px);
  padding-bottom: clamp(56px, 8vw, 112px);
}

.page-about .about-index {
  position: relative;
  margin-bottom: 36px;
  padding-bottom: 26px;
  border-bottom: 1px solid var(--hairline);
}

.page-about .about-index__title {
  margin: 0 0 14px;
  font-size: var(--fs-12);
  letter-spacing: .2em;
  color: var(--text-3);
}

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

.page-about .about-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 7px 11px;
  border: 1px solid var(--hairline-soft);
  border-radius: var(--radius);
  font-size: var(--fs-14);
  line-height: 1.5;
  color: var(--text-2);
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-about .about-index__num {
  font-size: var(--fs-12);
  letter-spacing: .12em;
  color: var(--text-3);
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  color: var(--spark-400);
  border-color: var(--hairline-strong);
  background: rgba(52, 228, 214, .06);
}

.page-about .about-index__link:hover .about-index__num,
.page-about .about-index__link:focus-visible .about-index__num {
  color: var(--spark-400);
}

.page-about .about-index__cta {
  margin-top: 20px;
}

@media (min-width: 1024px) {
  .page-about .about-layout {
    grid-template-columns: minmax(180px, 232px) minmax(0, 1fr);
    gap: clamp(40px, 5vw, 80px);
    align-items: start;
  }

  .page-about .about-index {
    position: sticky;
    top: calc(var(--header-h) + 40px);
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: 0;
  }

  .page-about .about-index__list {
    display: block;
  }

  .page-about .about-index__link {
    padding: 9px 0 9px 14px;
    border: 0;
    border-left: 1px solid var(--hairline);
    border-radius: 0;
    background: none;
  }

  .page-about .about-index__link:hover,
  .page-about .about-index__link:focus-visible {
    border-left-color: var(--spark-400);
    background: none;
  }
}

/* ---------- 通用区块 ---------- */

.page-about .about-block {
  padding: clamp(44px, 6vw, 76px) 0;
  border-top: 1px solid var(--hairline-soft);
  scroll-margin-top: calc(var(--header-h) + 32px);
}

.page-about .about-body > .about-block:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-about .about-body > .about-block:last-child {
  padding-bottom: 0;
}

.page-about .about-block__title {
  margin: 16px 0 0;
  max-width: 22em;
  font-size: clamp(26px, 3.6vw, 38px);
  font-weight: 700;
  line-height: 1.24;
  letter-spacing: -.022em;
  color: var(--text-1);
}

.page-about .about-block__body {
  margin-top: 22px;
  max-width: 64ch;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--text-2);
}

.page-about .about-block__body p {
  margin: 0 0 16px;
}

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

.page-about .about-block__more {
  margin: 28px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
}

/* ---------- 定位数据带 ---------- */

.page-about .about-brief {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--hairline-soft);
  border-left: 1px solid var(--hairline-soft);
}

.page-about .about-brief__item {
  padding: 20px 18px 22px;
  border-right: 1px solid var(--hairline-soft);
  border-bottom: 1px solid var(--hairline-soft);
}

.page-about .about-brief__value {
  display: block;
  font-size: clamp(30px, 3.8vw, 40px);
  font-weight: 700;
  line-height: 1;
  color: var(--gold-400);
}

.page-about .about-brief__label {
  display: block;
  margin-top: 12px;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--text-3);
}

@media (min-width: 720px) {
  .page-about .about-brief {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 发展历程 ---------- */

.page-about .about-roadmap__stage {
  position: relative;
  margin-top: 36px;
  padding: 26px 0 6px;
}

.page-about .about-roadmap__texture {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .13;
  pointer-events: none;
}

.page-about .about-timeline {
  position: relative;
  z-index: 1;
  margin: 0;
  padding: 0 0 0 22px;
  list-style: none;
  border-left: 1px solid var(--hairline);
}

.page-about .about-stage {
  position: relative;
  padding: 0 0 36px;
}

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

.page-about .about-stage::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 7px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--spark-400);
  box-shadow: 0 0 0 4px var(--abyss-950), 0 0 0 5px var(--hairline);
  transition: background-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .about-stage:hover::before {
  background: var(--gold-400);
  box-shadow: 0 0 0 4px var(--abyss-950), 0 0 0 5px rgba(242, 193, 78, .45);
}

.page-about .about-stage__meta {
  margin: 0;
  font-size: var(--fs-12);
  letter-spacing: .18em;
  color: var(--spark-400);
}

.page-about .about-stage__title {
  margin: 10px 0 0;
  font-size: clamp(19px, 2.1vw, 22px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--text-1);
}

.page-about .about-stage__body {
  margin: 12px 0 0;
  max-width: 58ch;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--text-2);
}

.page-about .about-stage__note {
  margin: 14px 0 0;
  max-width: 58ch;
  padding-left: 12px;
  border-left: 1px solid var(--hairline-soft);
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--text-3);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-stage:hover .about-stage__note {
  color: var(--text-2);
  border-left-color: var(--spark-400);
}

@media (min-width: 1024px) {
  .page-about .about-timeline {
    padding-left: 30px;
  }

  .page-about .about-stage::before {
    left: -34px;
  }
}

/* ---------- 团队 ---------- */

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  margin-top: 32px;
}

.page-about .about-team__media {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  background: var(--abyss-900);
}

.page-about .about-team__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .about-team__intro {
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--text-2);
}

.page-about .about-team__intro p {
  margin: 0 0 16px;
}

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

@media (min-width: 900px) {
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }
}

.page-about .about-roles {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  margin: 42px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--hairline-soft);
  border-left: 1px solid var(--hairline-soft);
}

.page-about .about-role {
  position: relative;
  padding: 22px 20px 24px;
  border-right: 1px solid var(--hairline-soft);
  border-bottom: 1px solid var(--hairline-soft);
  background: var(--abyss-950);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-about .about-role:hover,
.page-about .about-role:focus-within {
  transform: translateY(-2px);
  background: var(--abyss-900);
  box-shadow: inset 0 0 0 1px var(--spark-400), var(--shadow-2);
}

.page-about .about-role__num {
  display: block;
  font-size: var(--fs-12);
  letter-spacing: .18em;
  color: var(--text-3);
}

.page-about .about-role__name {
  margin: 12px 0 0;
  font-size: var(--fs-16);
  font-weight: 700;
  line-height: 1.4;
  color: var(--text-1);
}

.page-about .about-role__desc {
  margin: 9px 0 0;
  font-size: var(--fs-14);
  line-height: 1.72;
  color: var(--text-3);
}

@media (min-width: 560px) and (max-width: 899px) {
  .page-about .about-roles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-roles {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-about .about-role {
    padding: 24px 18px 26px;
  }
}

/* ---------- 内容理念 ---------- */

.page-about .about-craft {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  margin-top: 32px;
  align-items: center;
}

.page-about .about-quote {
  margin: 0;
  padding: 0 0 26px;
  border-bottom: 1px solid var(--hairline);
  font-size: clamp(24px, 3.4vw, 38px);
  font-weight: 700;
  line-height: 1.42;
  letter-spacing: -.022em;
  color: var(--text-1);
}

.page-about .about-quote::before {
  content: "";
  display: block;
  width: 42px;
  height: 2px;
  margin-bottom: 24px;
  background: var(--gold-400);
}

.page-about .about-quote p {
  margin: 0;
}

.page-about .about-craft__media {
  margin: 0;
  max-width: 340px;
  overflow: hidden;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  background: var(--abyss-900);
}

.page-about .about-craft__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

@media (min-width: 900px) {
  .page-about .about-craft {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    gap: clamp(32px, 5vw, 72px);
  }

  .page-about .about-craft__media {
    justify-self: end;
  }
}

.page-about .about-craft__points {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  margin-top: 44px;
  border-top: 1px solid var(--hairline-soft);
}

.page-about .about-craft__point {
  padding: 26px 0 24px;
  border-bottom: 1px solid var(--hairline-soft);
}

.page-about .about-craft__point h3 {
  margin: 0;
  font-size: var(--fs-16);
  font-weight: 700;
  line-height: 1.4;
  color: var(--text-1);
}

.page-about .about-craft__point p {
  margin: 12px 0 0;
  font-size: var(--fs-14);
  line-height: 1.82;
  color: var(--text-3);
}

@media (min-width: 900px) {
  .page-about .about-craft__points {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-craft__point {
    padding: 30px 28px 30px 0;
    border-bottom: 0;
    border-right: 1px solid var(--hairline-soft);
  }

  .page-about .about-craft__point + .about-craft__point {
    padding-left: 28px;
  }

  .page-about .about-craft__point:last-child {
    padding-right: 0;
    border-right: 0;
  }
}

/* ---------- 年度计划数据 ---------- */

.page-about .about-stats {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  margin: 38px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--hairline-soft);
}

.page-about .about-stat {
  padding: 24px 0 26px;
  border-bottom: 1px solid var(--hairline-soft);
}

.page-about .about-stat__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--gold-400);
}

.page-about .about-stat__value span {
  margin-left: .32em;
  font-size: .36em;
  font-weight: 500;
  letter-spacing: .08em;
  color: var(--text-3);
}

.page-about .about-stat__label {
  margin: 14px 0 0;
  max-width: 30ch;
  font-size: var(--fs-14);
  line-height: 1.72;
  color: var(--text-3);
}

@media (min-width: 640px) {
  .page-about .about-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-stat {
    padding: 26px 24px 28px 0;
    border-right: 1px solid var(--hairline-soft);
  }

  .page-about .about-stat:nth-child(2n) {
    padding: 26px 0 28px 24px;
    border-right: 0;
  }
}

@media (min-width: 1024px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-stat,
  .page-about .about-stat:nth-child(2n) {
    padding: 28px 26px 30px;
    border-right: 1px solid var(--hairline-soft);
  }

  .page-about .about-stat:first-child {
    padding-left: 0;
  }

  .page-about .about-stat:last-child {
    padding-right: 0;
    border-right: 0;
  }
}

/* ---------- 合作生态 ---------- */

.page-about .about-partners {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  margin-top: 30px;
}

.page-about .about-partners__text {
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--text-2);
}

.page-about .about-partners__text p {
  margin: 0 0 16px;
}

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

.page-about .about-coop {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--hairline-soft);
}

.page-about .about-coop__item {
  padding: 20px 0 22px;
  border-bottom: 1px solid var(--hairline-soft);
}

.page-about .about-coop__item h3 {
  margin: 0;
  font-size: var(--fs-16);
  font-weight: 700;
  color: var(--text-1);
}

.page-about .about-coop__item p {
  margin: 9px 0 0;
  font-size: var(--fs-14);
  line-height: 1.72;
  color: var(--text-3);
}

@media (min-width: 900px) {
  .page-about .about-partners {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(32px, 5vw, 72px);
    align-items: start;
  }
}

/* ---------- 结尾动作区 ---------- */

.page-about .about-cta {
  border-top: 1px solid var(--hairline);
  background: linear-gradient(180deg, var(--abyss-900) 0%, var(--abyss-950) 100%);
}

.page-about .about-cta__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  align-items: end;
  padding-top: clamp(48px, 7vw, 88px);
  padding-bottom: clamp(56px, 8vw, 104px);
}

.page-about .about-cta__title {
  margin: 16px 0 0;
  font-size: clamp(26px, 3.6vw, 38px);
  font-weight: 700;
  line-height: 1.24;
  letter-spacing: -.022em;
  color: var(--text-1);
}

.page-about .about-cta__lede {
  margin: 18px 0 0;
  max-width: 56ch;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--text-2);
}

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

@media (min-width: 900px) {
  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-about .about-cta__actions {
    justify-self: end;
  }
}
<<<END>>>