.page-about {
  color: var(--fog);
  font-family: var(--font-body);
}

/* ---------- 首屏刊头 ---------- */
.page-about .about-hero {
  background:
    radial-gradient(circle at 84% 12%, rgba(184, 255, 61, 0.1), transparent 55%),
    linear-gradient(180deg, var(--night) 0%, var(--stand) 100%);
  padding-block: clamp(24px, 4vw, 44px) clamp(44px, 6vw, 88px);
  border-bottom: var(--line);
}

.page-about .about-hero__grid {
  display: grid;
  gap: 26px;
  margin-top: clamp(18px, 3vw, 32px);
}

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

.page-about .about-hero__main .display--hero {
  margin-block: 10px 18px;
  line-height: 0.94;
}

.page-about .about-hero__main .lede {
  max-width: 60ch;
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  background: var(--grid);
  border: 1px solid var(--grid);
  margin-block: clamp(22px, 3vw, 32px);
}

.page-about .about-hero__stats .stat {
  background: var(--stand);
  padding: 14px 16px;
}

.page-about .about-hero__stats .stat__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.4vw, 40px);
  font-weight: 700;
  line-height: 1;
  color: var(--lime);
}

.page-about .about-hero__stats .stat__label {
  display: block;
  margin-top: 8px;
  font-size: var(--text-caption);
  color: var(--steel);
  line-height: 1.5;
}

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

.page-about .about-hero__note {
  font-family: var(--font-annotation);
  font-size: var(--text-caption);
  letter-spacing: 0.16em;
  color: var(--steel);
  border-top: 1px solid var(--grid);
  padding-top: 10px;
  margin: 0;
}

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

/* ---------- 品牌缘起 ---------- */
.page-about .about-story {
  background: var(--night);
  padding-block: clamp(48px, 7vw, 96px);
  border-bottom: var(--line);
}

.page-about .about-story__layout {
  display: grid;
  gap: clamp(20px, 3vw, 40px);
  margin-top: clamp(18px, 3vw, 30px);
}

.page-about .about-story__headline {
  margin: 0;
  color: var(--lime-soft);
  line-height: 1.05;
}

.page-about .about-story__text p {
  margin: 0 0 18px;
  color: var(--fog);
  font-size: var(--text-body);
  line-height: 1.85;
}

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

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding-block: clamp(48px, 7vw, 96px);
  border-bottom: var(--line);
}

.page-about .about-team__layout {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  margin-top: clamp(18px, 3vw, 30px);
}

.page-about .about-team__intro .display--section {
  margin: 0 0 14px;
  line-height: 1.05;
}

.page-about .about-team__intro .lede {
  max-width: 62ch;
}

.page-about .about-team__grid {
  display: grid;
  gap: 1px;
  background: var(--grid);
  border: 1px solid var(--grid);
}

.page-about .about-team__cell {
  background: rgba(6, 20, 38, 0.55);
  padding: clamp(18px, 2.6vw, 28px);
  transition: background var(--dur) var(--ease);
}

.page-about .about-team__cell:hover,
.page-about .about-team__cell:focus-within {
  background: rgba(184, 255, 61, 0.08);
}

.page-about .about-team__index {
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  letter-spacing: 0.18em;
  color: var(--amber);
  margin: 0 0 10px;
}

.page-about .about-team__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(22px, 2.4vw, 30px);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--fog);
}

.page-about .about-team__cell p:last-child {
  margin: 0;
  font-size: clamp(15px, 1.02vw, 16px);
  line-height: 1.8;
  color: var(--steel);
}

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

.page-about .about-team__figure .media-frame__image {
  aspect-ratio: 3 / 2;
  overflow: hidden;
  border: 1px solid var(--grid);
}

/* ---------- 三级校验 ---------- */
.page-about .about-method {
  background: var(--night);
  padding-block: clamp(48px, 7vw, 96px);
  border-bottom: var(--line);
}

.page-about .about-method__head {
  display: grid;
  gap: 16px;
  margin-block: clamp(16px, 2.6vw, 26px) clamp(26px, 4vw, 44px);
}

.page-about .about-method__head .display--section {
  margin: 0;
  line-height: 1.05;
  color: var(--lime-soft);
}

.page-about .about-method__head .lede {
  max-width: 62ch;
}

.page-about .about-method__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--grid);
  border-block: 1px solid var(--grid);
}

.page-about .about-method__step {
  background: var(--night);
  padding: clamp(20px, 3vw, 32px) clamp(16px, 2vw, 24px);
  position: relative;
  transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .about-method__step::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: transparent;
  transition: background var(--dur) var(--ease);
}

.page-about .about-method__step:hover,
.page-about .about-method__step:focus-within {
  background: var(--lime-wash);
}

.page-about .about-method__step:hover::before,
.page-about .about-method__step:focus-within::before {
  background: var(--lime);
}

.page-about .about-method__num {
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  letter-spacing: 0.2em;
  color: var(--amber);
  margin: 0 0 10px;
}

.page-about .about-method__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(22px, 2.4vw, 30px);
  font-weight: 700;
  color: var(--fog);
}

.page-about .about-method__step p:last-child {
  margin: 0;
  font-size: clamp(15px, 1.02vw, 16px);
  line-height: 1.8;
  color: var(--steel);
}

.page-about .about-method__foot {
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--grid);
  color: var(--steel);
  font-size: clamp(14px, 1vw, 15px);
  line-height: 1.8;
}

/* ---------- 版本演进时间轴 ---------- */
.page-about .about-timeline {
  padding-block: clamp(48px, 7vw, 96px);
  border-bottom: var(--line);
}

.page-about .about-timeline__head {
  display: grid;
  gap: 16px;
  margin-block: clamp(16px, 2.6vw, 26px) clamp(24px, 3.4vw, 36px);
}

.page-about .about-timeline__head .display--section {
  margin: 0;
  line-height: 1.05;
}

.page-about .about-timeline__head .lede {
  max-width: 62ch;
}

.page-about .about-timeline__figure {
  margin: 0 0 clamp(28px, 4vw, 48px);
}

.page-about .about-timeline__figure .media-frame__image {
  aspect-ratio: 2 / 1;
  overflow: hidden;
  border: 1px solid rgba(184, 255, 61, 0.22);
}

.page-about .about-timeline__list {
  display: grid;
  gap: 0;
}

.page-about .about-timeline__item {
  position: relative;
  padding-inline-start: 26px;
  padding-bottom: clamp(26px, 3.4vw, 42px);
  border-inline-start: 1px solid var(--grid);
}

.page-about .about-timeline__item:last-child {
  border-inline-start-color: transparent;
  padding-bottom: 0;
}

.page-about .about-timeline__dot {
  position: absolute;
  inset-inline-start: -5px;
  top: 8px;
  width: 9px;
  height: 9px;
  background: var(--lime);
  box-shadow: 0 0 0 4px rgba(184, 255, 61, 0.15);
}

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

.page-about .about-timeline__version {
  font-family: var(--font-mono);
  font-size: clamp(30px, 4.6vw, 58px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--amber);
  margin: 0 0 12px;
}

.page-about .about-timeline__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(22px, 2.6vw, 32px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--fog);
}

.page-about .about-timeline__body > p {
  margin: 0 0 16px;
  font-size: clamp(15px, 1.02vw, 16px);
  line-height: 1.85;
  color: var(--steel);
}

.page-about .about-timeline__body .expand__trigger {
  margin-bottom: 14px;
}

.page-about .about-timeline__body .expand__content p {
  margin: 0;
  padding: 14px 16px;
  border-inline-start: 2px solid var(--amber);
  background: var(--amber-soft);
  color: var(--fog);
  font-size: clamp(14px, 1vw, 15px);
  line-height: 1.8;
}

/* ---------- 合作与荣誉 ---------- */
.page-about .about-partners {
  padding-block: clamp(48px, 7vw, 96px);
  border-bottom: var(--line);
}

.page-about .about-partners .display--section {
  margin: clamp(14px, 2.4vw, 22px) 0 0;
  line-height: 1.05;
  color: var(--fog);
}

.page-about .about-partners__lede {
  margin-top: 16px;
  max-width: 66ch;
  color: rgba(234, 242, 248, 0.82);
}

.page-about .about-partners__grid {
  display: grid;
  gap: 1px;
  margin-top: clamp(24px, 3.4vw, 40px);
  background: rgba(234, 242, 248, 0.16);
  border: 1px solid rgba(234, 242, 248, 0.16);
}

.page-about .about-partners__cell {
  background: rgba(6, 20, 38, 0.34);
  padding: clamp(20px, 2.8vw, 30px);
}

.page-about .about-partners__num {
  font-family: var(--font-mono);
  font-size: clamp(34px, 4.4vw, 52px);
  font-weight: 700;
  line-height: 1;
  color: var(--lime);
  margin: 0 0 12px;
}

.page-about .about-partners__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.2vw, 26px);
  font-weight: 700;
  line-height: 1.25;
  color: var(--fog);
}

.page-about .about-partners__cell p:last-child {
  margin: 0;
  font-size: clamp(14px, 1vw, 15px);
  line-height: 1.8;
  color: rgba(234, 242, 248, 0.75);
}

.page-about .about-partners__foot {
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding-top: 18px;
  border-top: 1px solid rgba(234, 242, 248, 0.2);
  font-size: clamp(14px, 1vw, 15px);
  line-height: 1.8;
  color: rgba(234, 242, 248, 0.78);
}

/* ---------- 服务承诺 ---------- */
.page-about .about-service {
  background: var(--night);
  padding-block: clamp(48px, 7vw, 96px);
  border-bottom: var(--line);
}

.page-about .about-service__layout {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  margin-top: clamp(18px, 3vw, 30px);
}

.page-about .about-service__intro .display--section {
  margin: 0 0 14px;
  line-height: 1.05;
  color: var(--lime-soft);
}

.page-about .about-service__intro p {
  margin: 0;
  max-width: 58ch;
  font-size: var(--text-body);
  line-height: 1.85;
  color: var(--steel);
}

.page-about .about-service__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--grid);
}

.page-about .about-service__item {
  padding: 18px 0;
  border-bottom: 1px solid var(--grid);
}

.page-about .about-service__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(19px, 2vw, 24px);
  font-weight: 700;
  color: var(--fog);
}

.page-about .about-service__item p {
  margin: 0;
  font-size: clamp(14px, 1vw, 15px);
  line-height: 1.8;
  color: var(--steel);
}

.page-about .about-service__contact {
  display: grid;
  gap: 1px;
  margin-top: clamp(26px, 3.6vw, 42px);
  background: var(--grid);
  border: 1px solid var(--grid);
}

.page-about .about-service__contact > div {
  background: var(--stand);
  padding: 16px 18px;
}

.page-about .about-service__label {
  margin: 0 0 8px;
  font-family: var(--font-annotation);
  font-size: var(--text-caption);
  letter-spacing: 0.14em;
  color: var(--steel);
}

.page-about .about-service__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.4vw, 19px);
  font-weight: 600;
  color: var(--amber);
  word-break: break-word;
}

/* ---------- 页尾索引 ---------- */
.page-about .about-next {
  background: var(--night);
  padding-block: clamp(44px, 6vw, 88px);
}

.page-about .about-next .display--section {
  margin: clamp(14px, 2.4vw, 22px) 0 clamp(22px, 3vw, 32px);
  line-height: 1.05;
}

.page-about .about-next__links {
  display: grid;
  gap: 1px;
  background: var(--grid);
  border: 1px solid var(--grid);
}

.page-about .about-next__link {
  display: block;
  background: var(--night);
  padding: 18px 20px;
  text-decoration: none;
  transition: background var(--dur) var(--ease), padding-inline-start var(--dur) var(--ease);
}

.page-about .about-next__link:hover,
.page-about .about-next__link:focus-visible {
  background: var(--stand);
  padding-inline-start: 28px;
}

.page-about .about-next__name {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.2vw, 27px);
  font-weight: 700;
  color: var(--lime);
  letter-spacing: 0.02em;
}

.page-about .about-next__desc {
  display: block;
  margin-top: 6px;
  font-size: clamp(14px, 1vw, 15px);
  line-height: 1.7;
  color: var(--steel);
}

.page-about .about-next__foot {
  margin: clamp(22px, 3vw, 32px) 0 0;
  font-size: clamp(13px, 0.95vw, 14px);
  line-height: 1.8;
  color: var(--steel);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-partners__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) 40px minmax(0, 5fr);
    gap: clamp(24px, 3vw, 46px);
    align-items: start;
  }

  .page-about .about-hero__note {
    writing-mode: vertical-rl;
    letter-spacing: 0.3em;
    border-top: 0;
    border-inline-start: 1px solid var(--grid);
    padding-top: 0;
    padding-inline-start: 10px;
    align-self: stretch;
    margin-top: 6px;
  }

  .page-about .about-hero__figure {
    margin-top: clamp(6px, 1.4vw, 20px);
  }

  .page-about .about-story__layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
    gap: clamp(28px, 4vw, 64px);
  }

  .page-about .about-story__headline {
    position: sticky;
    top: 24px;
  }

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

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

  .page-about .about-team__figure {
    grid-column: 1 / -1;
    margin-top: clamp(6px, 1.4vw, 18px);
  }

  .page-about .about-method__head {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }

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

  .page-about .about-method__step + .about-method__step {
    border-inline-start: 1px solid var(--grid);
  }

  .page-about .about-timeline__head {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }

  .page-about .about-timeline__list {
    padding-inline-start: clamp(6px, 1.4vw, 18px);
  }

  .page-about .about-timeline__item {
    padding-inline-start: clamp(28px, 3vw, 44px);
  }

  .page-about .about-service__layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-about .about-service__intro {
    position: sticky;
    top: 24px;
  }
}

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

  .page-about .about-team__layout {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  }

  .page-about .about-team__figure {
    grid-column: 2;
  }
}

@media (max-width: 719px) {
  .page-about .about-hero__figure .media-frame__image {
    aspect-ratio: 5 / 4;
    overflow: hidden;
    border: 1px solid var(--grid);
  }
}

.page-about .about-hero__figure .media-frame__image,
.page-about .about-team__figure .media-frame__image,
.page-about .about-timeline__figure .media-frame__image {
  max-width: 100%;
}

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

@media (min-width: 720px) {
  .page-about .about-hero__figure .media-frame__image {
    aspect-ratio: 5 / 6;
    overflow: hidden;
    border: 1px solid var(--grid);
  }
}

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