.page-about {
  --ab-ink-line: rgba(191, 217, 210, .55);
  --ab-ink-fade: rgba(247, 251, 250, .78);
  background: var(--frost);
  color: var(--slate);
  font-family: var(--font-body);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  display: flex;
  align-items: flex-end;
  min-height: 68vh;
  background: var(--ink-950);
  color: var(--frost);
  overflow: hidden;
}

.page-about .about-hero__media {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.page-about .about-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  opacity: .48;
  filter: saturate(.8);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(88% 68% at 84% 6%, rgba(216, 255, 62, .22), transparent 62%),
    linear-gradient(180deg, rgba(4, 27, 22, .5) 0%, rgba(4, 27, 22, .84) 56%, rgba(4, 27, 22, .98) 100%);
  pointer-events: none;
}

.page-about .about-hero__inner {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding: clamp(56px, 12vh, 120px) var(--gutter) clamp(40px, 7vh, 72px);
}

.page-about .about-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 clamp(20px, 4vh, 38px);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--ice-200);
}

.page-about .about-crumb a {
  color: var(--frost);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .16s var(--ease);
}

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

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(38px, 8.4vw, 92px);
  line-height: 1.04;
  letter-spacing: -.01em;
  color: var(--frost);
}

.page-about .about-hero__lead {
  max-width: 58ch;
  margin: clamp(20px, 3.2vh, 30px) 0 0;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.85;
  color: var(--ice-050);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: clamp(14px, 2.6vw, 28px);
  margin: clamp(30px, 6vh, 52px) 0 0;
  padding: clamp(18px, 3vh, 26px) 0 0;
  border-top: 1px solid rgba(191, 217, 210, .32);
  list-style: none;
}

.page-about .about-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  line-height: 1.5;
  color: rgba(247, 251, 250, .72);
}

.page-about .about-hero__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(26px, 4vw, 40px);
  line-height: 1;
  letter-spacing: .01em;
  color: var(--flare);
}

/* ---------- 主体两栏 ---------- */
.page-about .about-body {
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

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

@media (min-width: 960px) {
  .page-about .about-body {
    display: grid;
    grid-template-columns: 200px minmax(0, 1fr);
    column-gap: clamp(40px, 6vw, 96px);
    align-items: start;
  }
}

/* ---------- 章节索引 ---------- */
.page-about .about-toc {
  padding: clamp(30px, 5vw, 48px) 0 22px;
  border-bottom: 1px solid var(--ab-ink-line);
}

.page-about .about-toc__label {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--mist);
}

.page-about .about-toc__list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(126px, 1fr));
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-toc__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 0;
  font-size: 14px;
  color: var(--slate);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .16s var(--ease), border-color .16s var(--ease);
}

.page-about .about-toc__list a:hover,
.page-about .about-toc__list a:focus-visible {
  color: var(--ink-950);
  border-bottom-color: var(--flare);
}

.page-about .about-toc__list a:focus-visible {
  outline: 2px solid var(--flare);
  outline-offset: 3px;
}

.page-about .about-toc__list .mono {
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--mist);
}

@media (min-width: 960px) {
  .page-about .about-toc {
    position: sticky;
    top: 110px;
    align-self: start;
    padding: clamp(64px, 9vw, 112px) 0 40px;
    border-bottom: 0;
  }
  .page-about .about-toc__list {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* ---------- 章节通用 ---------- */
.page-about .about-chapter {
  padding-block: clamp(44px, 7vw, 88px);
  border-top: 1px solid var(--ab-ink-line);
}

.page-about .about-flow > .about-chapter:first-child {
  border-top: 0;
  padding-top: clamp(36px, 5vw, 64px);
}

.page-about .about-chapter__head {
  display: grid;
  gap: clamp(10px, 2vw, 16px);
  margin-bottom: clamp(20px, 3.4vw, 32px);
}

.page-about .about-chapter__num {
  display: block;
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(50px, 11vw, 104px);
  line-height: .82;
  letter-spacing: -.03em;
  color: var(--ice-200);
  font-variant-numeric: tabular-nums;
}

.page-about .about-chapter__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(23px, 3.5vw, 36px);
  line-height: 1.26;
  letter-spacing: -.004em;
  color: var(--ink-950);
  text-wrap: balance;
}

.page-about .about-chapter__text p,
.page-about .about-chapter__lead {
  max-width: 66ch;
  margin: 0 0 1.05em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--slate);
}

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

@media (min-width: 860px) {
  .page-about .about-chapter__head {
    grid-template-columns: minmax(110px, 180px) minmax(0, 1fr);
    align-items: end;
    gap: clamp(16px, 3vw, 36px);
  }
}

/* ---------- 深色章节 ---------- */
.page-about .about-chapter--ink {
  margin-block: clamp(24px, 4vw, 44px);
  padding: clamp(34px, 6vw, 60px) clamp(20px, 4vw, 46px);
  background:
    radial-gradient(90% 80% at 100% 0%, rgba(216, 255, 62, .12), transparent 58%),
    var(--ink-950);
  color: var(--frost);
  border-top: 0;
}

.page-about .about-chapter--ink .about-chapter__num {
  color: rgba(216, 255, 62, .55);
}

.page-about .about-chapter--ink .about-chapter__title {
  color: var(--frost);
}

.page-about .about-chapter--ink p,
.page-about .about-chapter--ink .about-chapter__lead {
  color: var(--ab-ink-fade);
}

/* ---------- 看台方法 ---------- */
.page-about .about-method {
  counter-reset: ab-m;
  margin: clamp(24px, 4vw, 38px) 0 0;
  padding: 0;
}

.page-about .about-method__item {
  padding: clamp(16px, 2.8vw, 24px) 0;
  border-top: 1px solid var(--ab-ink-line);
}

.page-about .about-method__item:last-child {
  border-bottom: 1px solid var(--ab-ink-line);
}

.page-about .about-method__k {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(18px, 2.2vw, 22px);
  line-height: 1.3;
  color: var(--ink-800);
}

.page-about .about-method__k::before {
  counter-increment: ab-m;
  content: "0" counter(ab-m);
  display: inline-block;
  margin-right: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .16em;
  color: var(--orange);
  vertical-align: 2px;
}

.page-about .about-method__v {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(14px, 1.55vw, 16px);
  line-height: 1.8;
  color: var(--slate);
}

@media (min-width: 760px) {
  .page-about .about-method__item {
    display: grid;
    grid-template-columns: minmax(150px, 210px) minmax(0, 1fr);
    gap: clamp(20px, 3vw, 40px);
    align-items: start;
  }
  .page-about .about-method__k {
    margin-bottom: 0;
  }
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: clamp(22px, 4vw, 36px);
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-about .about-team__media {
  margin: 0;
}

.page-about .about-team__media .media__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 10;
  object-fit: cover;
  filter: saturate(.85);
}

.page-about .about-team__media .media__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: rgba(247, 251, 250, .6);
}

@media (min-width: 780px) {
  .page-about .about-team {
    grid-template-columns: minmax(0, 1fr) minmax(0, .88fr);
    align-items: start;
  }
}

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

.page-about .about-roles li {
  display: grid;
  gap: 4px;
  padding: 13px 0;
  border-top: 1px solid rgba(247, 251, 250, .18);
}

.page-about .about-roles__k {
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--flare);
}

.page-about .about-roles__v {
  font-size: clamp(14px, 1.55vw, 16px);
  line-height: 1.75;
  color: var(--ab-ink-fade);
}

@media (min-width: 640px) {
  .page-about .about-roles li {
    grid-template-columns: 168px minmax(0, 1fr);
    gap: 22px;
    align-items: baseline;
  }
}

/* ---------- 共创网络 ---------- */
.page-about .about-glass {
  position: relative;
  display: grid;
  gap: clamp(18px, 3vw, 30px);
  margin: clamp(24px, 4vw, 38px) 0;
  padding: clamp(22px, 4vw, 34px);
  background: linear-gradient(140deg, rgba(4, 27, 22, .95), rgba(10, 46, 39, .88));
  border: 1px solid rgba(191, 217, 210, .3);
  color: var(--frost);
  overflow: hidden;
}

.page-about .about-glass::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(80% 120% at 100% 0%, rgba(216, 255, 62, .16), transparent 62%);
  pointer-events: none;
}

.page-about .about-glass__item {
  position: relative;
  display: grid;
  gap: 6px;
  align-content: start;
}

.page-about .about-glass__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(30px, 4.6vw, 46px);
  line-height: 1;
  color: var(--flare);
}

.page-about .about-glass__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--ice-200);
}

.page-about .about-glass__item p {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(247, 251, 250, .78);
}

@media (min-width: 720px) {
  .page-about .about-glass {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .about-glass__item + .about-glass__item {
    padding-left: clamp(16px, 2.4vw, 26px);
    border-left: 1px solid rgba(191, 217, 210, .26);
  }
}

.page-about .about-network__media {
  margin: 0;
}

.page-about .about-network__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  filter: saturate(.82) contrast(1.04);
}

.page-about .about-network__media figcaption {
  margin-top: 10px;
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--mist);
}

/* ---------- 服务准则 ---------- */
.page-about .about-rules {
  display: grid;
  gap: 0;
  margin: clamp(22px, 4vw, 36px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-rules__item {
  display: grid;
  gap: 8px;
  padding: clamp(16px, 2.8vw, 24px) 0;
  border-top: 1px solid var(--ab-ink-line);
}

.page-about .about-rules__item:last-child {
  border-bottom: 1px solid var(--ab-ink-line);
}

.page-about .about-rules__mark {
  display: inline-block;
  align-self: start;
  padding: 5px 9px;
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--ink-950);
  background: var(--flare);
  justify-self: start;
}

.page-about .about-rules__body h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(17px, 2.1vw, 21px);
  line-height: 1.34;
  color: var(--ink-800);
}

.page-about .about-rules__body p {
  margin: 0;
  max-width: 60ch;
  font-size: clamp(14px, 1.55vw, 16px);
  line-height: 1.8;
  color: var(--slate);
}

@media (min-width: 740px) {
  .page-about .about-rules__item {
    grid-template-columns: 104px minmax(0, 1fr);
    gap: clamp(18px, 2.6vw, 32px);
    align-items: start;
  }
}

.page-about .about-inline-link {
  margin: clamp(20px, 3vw, 28px) 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate);
}

.page-about .about-inline-link a {
  color: var(--ink-800);
  text-decoration: none;
  border-bottom: 2px solid var(--flare);
  transition: background .16s var(--ease);
}

.page-about .about-inline-link a:hover,
.page-about .about-inline-link a:focus-visible {
  background: rgba(216, 255, 62, .38);
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners {
  display: grid;
  gap: 0;
  margin: clamp(20px, 3.4vw, 32px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-partners__card {
  display: block;
  padding: clamp(18px, 3vw, 26px) clamp(4px, 1.4vw, 16px);
  border-top: 1px solid rgba(247, 251, 250, .17);
  text-decoration: none;
  color: inherit;
  transition: background .18s var(--ease), padding-left .18s var(--ease);
}

.page-about .about-partners__card:hover {
  background: rgba(216, 255, 62, .08);
  padding-left: clamp(10px, 2vw, 26px);
}

.page-about .about-partners__card:focus-visible {
  outline: 2px solid var(--flare);
  outline-offset: 2px;
}

.page-about .about-partners__no {
  display: block;
  margin-bottom: 6px;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--orange);
}

.page-about .about-partners__name {
  margin: 0 0 7px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(18px, 2.3vw, 23px);
  line-height: 1.3;
  color: var(--frost);
}

.page-about .about-partners__desc {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(14px, 1.55vw, 16px);
  line-height: 1.78;
  color: var(--ab-ink-fade);
}

.page-about .about-partners__fit {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: rgba(216, 255, 62, .85);
  transition: color .18s var(--ease);
}

.page-about .about-partners__card:hover .about-partners__fit {
  color: var(--flare);
}

.page-about .about-partners__note {
  margin: clamp(22px, 3.4vw, 32px) 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ab-ink-fade);
}

.page-about .about-partners__note a {
  color: var(--flare);
  text-decoration: none;
  border-bottom: 1px solid rgba(216, 255, 62, .5);
}

.page-about .about-partners__note a:hover,
.page-about .about-partners__note a:focus-visible {
  border-bottom-color: var(--flare);
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  position: relative;
  max-width: var(--wrap);
  margin: clamp(36px, 6vw, 72px) auto 0;
  padding: clamp(36px, 7vw, 76px) clamp(20px, 5vw, 56px);
  background: var(--ink-950);
  color: var(--frost);
  overflow: hidden;
}

.page-about .about-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(114deg, rgba(216, 255, 62, .07) 0 1px, transparent 1px 28px);
  pointer-events: none;
}

.page-about .about-cta__inner {
  position: relative;
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-about .about-cta__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(28px, 4.6vw, 48px);
  line-height: 1.15;
  letter-spacing: -.01em;
  color: var(--frost);
}

.page-about .about-cta__copy p {
  margin: 0;
  max-width: 54ch;
  font-size: clamp(14px, 1.6vw, 16px);
  line-height: 1.8;
  color: var(--ab-ink-fade);
}

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

.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  width: 100%;
  margin: 6px 0 0;
  padding: 14px 0 0;
  border-top: 1px solid rgba(191, 217, 210, .24);
  list-style: none;
}

.page-about .about-cta__links a {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ice-200);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .16s var(--ease), border-color .16s var(--ease);
}

.page-about .about-cta__links a:hover,
.page-about .about-cta__links a:focus-visible {
  color: var(--flare);
  border-bottom-color: var(--flare);
}

@media (min-width: 820px) {
  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: end;
  }
}

/* ---------- 降级与无障碍 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .about-toc__list a,
  .page-about .about-partners__card,
  .page-about .about-partners__fit,
  .page-about .about-cta__links a,
  .page-about .about-crumb a {
    transition: none;
  }
  .page-about .about-partners__card:hover {
    padding-left: clamp(4px, 1.4vw, 16px);
  }
}
<<<END>>>