.page-about {
  --about-gap: clamp(20px, 4vw, 36px);
  background: var(--paper);
  color: var(--ink);
}

.page-about .about-crumb {
  padding: clamp(14px, 3vw, 22px) 0 0;
  background: var(--paper);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(18px, 4vw, 34px) 0 clamp(34px, 6vw, 64px);
  background:
    radial-gradient(130% 120% at 4% -20%, rgba(240, 217, 164, .62) 0%, rgba(240, 217, 164, 0) 58%),
    radial-gradient(90% 80% at 100% 0%, rgba(181, 35, 46, .08) 0%, rgba(181, 35, 46, 0) 62%),
    linear-gradient(180deg, var(--paper-lift) 0%, var(--paper) 78%);
  border-bottom: var(--line);
}

.page-about .about-hero__inner {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
  align-items: end;
}

.page-about .about-hero__eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--tea);
}

.page-about .about-hero__eyebrow::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--gold);
  flex: none;
}

.page-about .about-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(29px, 6vw, 56px);
  line-height: 1.14;
  letter-spacing: -.01em;
  color: var(--brown);
}

.page-about .about-hero__mark {
  font-style: normal;
  color: var(--red);
  box-shadow: inset 0 -0.18em 0 var(--gold-light);
}

.page-about .about-hero__lead {
  margin: 0 0 14px;
  max-width: 34em;
  font-size: clamp(16px, 2.1vw, 19px);
  line-height: 1.7;
  color: var(--ink);
}

.page-about .about-hero__text {
  margin: 0 0 24px;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--tea);
}

.page-about .about-hero__figs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 0 0 26px;
  padding: 18px 0 0;
  border-top: 1px dashed var(--mist);
  list-style: none;
}

.page-about .about-fig__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(21px, 3vw, 28px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--red);
}

.page-about .about-fig__label {
  display: block;
  margin-top: 5px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--tea);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-hero__figure {
  position: relative;
  margin: 0;
  padding: 10px 10px 0;
  background: var(--paper-lift);
  border: var(--line);
  box-shadow: var(--shadow-card), 8px 8px 0 -1px var(--paper), 8px 8px 0 0 var(--mist);
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--warm-gray);
}

.page-about .about-hero__caption {
  display: block;
  padding: 10px 4px 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--tea);
}

/* ---------- 正文骨架 ---------- */
.page-about .about-body {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  padding: clamp(30px, 6vw, 56px) 0 clamp(40px, 7vw, 72px);
}

/* 目录索引 */
.page-about .about-index {
  align-self: start;
  padding: 16px 18px 18px;
  background: var(--paper-lift);
  border: var(--line);
  border-left: 4px solid var(--gold);
  box-shadow: var(--shadow-card);
}

.page-about .about-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--red);
}

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

.page-about .about-index__item + .about-index__item {
  border-top: 1px dashed var(--mist);
}

.page-about .about-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 0;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--brown);
  text-decoration: none;
  transition: color .18s var(--ease);
}

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

.page-about .about-index__num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--gold);
  flex: none;
}

.page-about .about-index__foot {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--warm-gray);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--tea);
}

.page-about .about-index__foot a {
  color: var(--red);
  font-weight: 700;
  text-decoration: none;
}

.page-about .about-index__foot a:hover {
  text-decoration: underline;
}

/* 章节 */
.page-about .about-chapters {
  display: grid;
  gap: clamp(38px, 6vw, 68px);
  min-width: 0;
}

.page-about .about-chapter {
  scroll-margin-top: calc(var(--header-h) + 28px);
  min-width: 0;
}

.page-about .about-chapter__kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--tea);
}

.page-about .about-chapter__kicker span {
  display: inline-grid;
  place-items: center;
  min-width: 27px;
  height: 22px;
  padding: 0 5px;
  border-radius: 4px;
  background: var(--green);
  color: var(--gold-light);
  font-size: 11px;
  letter-spacing: .04em;
}

.page-about .about-chapter__title {
  margin: 0 0 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--mist);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 4vw, 32px);
  line-height: 1.26;
  color: var(--brown);
}

.page-about .about-prose p {
  max-width: 68ch;
  margin: 0 0 14px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink);
}

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

/* 来路 */
.page-about .about-origin__grid {
  display: grid;
  gap: 18px;
}

.page-about .about-note {
  align-self: start;
  padding: 16px 18px;
  background: var(--warm-gray);
  border-left: 3px solid var(--red);
  font-size: 13px;
  line-height: 1.75;
  color: var(--brown);
}

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

.page-about .about-note__label {
  margin-bottom: 8px !important;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--red);
}

/* 团队 */
.page-about .about-team {
  display: grid;
  gap: 20px;
}

.page-about .about-team__cards {
  display: grid;
  gap: 12px;
}

.page-about .about-team__card {
  position: relative;
  padding: 16px 16px 18px;
  background: var(--paper-lift);
  border: 1px solid var(--mist);
  box-shadow: var(--shadow-card);
  transition: transform .18s var(--ease), box-shadow .18s var(--ease), border-color .18s var(--ease);
}

.page-about .about-team__card:hover,
.page-about .about-team__card:focus-within {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
  border-color: var(--gold);
}

.page-about .about-team__seal {
  display: inline-block;
  margin-bottom: 9px;
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--red);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .05em;
}

.page-about .about-team__name {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  line-height: 1.4;
  color: var(--brown);
}

.page-about .about-team__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--tea);
}

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

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--warm-gray);
}

.page-about .about-team__caption {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--tea);
}

/* 服务版图 */
.page-about .about-lines__intro {
  margin-bottom: 18px;
}

.page-about .about-lines {
  display: grid;
  gap: 14px;
}

.page-about .about-line {
  display: grid;
  gap: 10px;
  padding: 18px 18px 20px;
  background: var(--paper-lift);
  border: 1px solid var(--mist);
  border-top: 3px solid var(--gold);
  box-shadow: var(--shadow-card);
}

.page-about .about-line__tag {
  display: inline-block;
  margin-bottom: 6px;
  padding: 2px 9px;
  border-radius: 3px;
  background: var(--gold-light);
  color: var(--brown);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
}

.page-about .about-line__name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  line-height: 1.35;
  color: var(--brown);
}

.page-about .about-line__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink);
}

.page-about .about-figure {
  margin: 20px 0 0;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--warm-gray);
}

.page-about .about-figure__caption {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--tea);
}

/* 时间轴 */
.page-about .about-timeline {
  margin: 0;
  padding: 0 0 0 20px;
  border-left: 2px solid var(--mist);
  list-style: none;
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 22px 14px;
}

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

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 5px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--red);
}

.page-about .about-timeline__year {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--red);
}

.page-about .about-timeline__name {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 16.5px;
  line-height: 1.45;
  color: var(--brown);
}

.page-about .about-timeline__text {
  margin: 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--tea);
}

/* 合作生态 */
.page-about .about-partners {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-partners__cell {
  padding: 14px 14px 16px;
  background: linear-gradient(150deg, var(--green) 0%, var(--green-deep) 100%);
  border: 1px solid rgba(201, 178, 122, .45);
  border-radius: 3px;
  transition: border-color .18s var(--ease), transform .18s var(--ease);
}

.page-about .about-partners__cell:hover,
.page-about .about-partners__cell:focus-within {
  border-color: var(--gold);
  transform: translateY(-2px);
}

.page-about .about-partners__dot {
  display: block;
  width: 9px;
  height: 9px;
  margin-bottom: 10px;
  border-radius: 50%;
  background: var(--gold);
}

.page-about .about-partners__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 23px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--gold-light);
}

.page-about .about-partners__label {
  display: block;
  margin-top: 6px;
  font-size: 12.5px;
  line-height: 1.6;
  color: rgba(247, 241, 227, .86);
}

.page-about .about-partners__foot {
  margin: 16px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--tea);
}

.page-about .about-partners__foot a {
  color: var(--red);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid var(--gold-light);
}

.page-about .about-partners__foot a:hover {
  border-bottom-color: var(--red);
}

/* 为什么 */
.page-about .about-why {
  display: grid;
  gap: 14px;
  align-items: start;
}

.page-about .about-why__item {
  padding: 18px 18px 20px;
  background: var(--paper-lift);
  border: 1px solid var(--mist);
  box-shadow: var(--shadow-card);
}

.page-about .about-why__num {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
}

.page-about .about-why__name {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  line-height: 1.4;
  color: var(--brown);
}

.page-about .about-why__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--tea);
}

/* 尾条 */
.page-about .about-cta {
  background: linear-gradient(140deg, var(--green) 0%, var(--green-deep) 100%);
  border-top: 3px solid var(--gold);
  color: var(--paper);
}

.page-about .about-cta__inner {
  padding-top: clamp(30px, 5vw, 54px);
  padding-bottom: clamp(30px, 5vw, 54px);
}

.page-about .about-cta__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(21px, 3.6vw, 30px);
  line-height: 1.35;
  color: var(--paper-lift);
}

.page-about .about-cta__text {
  margin: 0 0 22px;
  max-width: 60ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(247, 241, 227, .82);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-cta .btn--ghost {
  color: var(--gold-light);
  border-color: var(--mist);
  background: transparent;
}

.page-about .about-cta .btn--ghost:hover {
  color: var(--paper-lift);
  border-color: var(--gold);
}

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

  .page-about .about-hero__figs {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
  }
}

@media (min-width: 760px) {
  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 1fr) 210px;
    gap: 24px;
  }

  .page-about .about-line {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 20px;
    align-items: start;
  }

  .page-about .about-line:nth-child(even) {
    margin-left: 26px;
  }

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

@media (min-width: 900px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    gap: clamp(28px, 4vw, 52px);
  }

  .page-about .about-body {
    grid-template-columns: 222px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 64px);
    align-items: start;
  }

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

  .page-about .about-team {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: 24px;
    align-items: start;
  }

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

  .page-about .about-why__item:nth-child(2) {
    margin-top: 24px;
  }

  .page-about .about-why__item:nth-child(3) {
    margin-top: 48px;
  }
}

@media (min-width: 1080px) {
  .page-about .about-hero__figure {
    transform: rotate(-.7deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-team__card,
  .page-about .about-partners__cell,
  .page-about .about-index__link {
    transition: none;
  }

  .page-about .about-team__card:hover,
  .page-about .about-partners__cell:hover {
    transform: none;
  }

  .page-about .about-hero__figure {
    transform: none;
  }
}
<<<END>>>