.page-about {
  background: var(--ink);
  color: var(--white);
  font-family: var(--font-sans);
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumb {
  padding-top: calc(var(--header-h) + 22px);
  padding-bottom: 10px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -46%;
  right: -18%;
  width: 84%;
  height: 190%;
  background: linear-gradient(155deg, rgba(200, 162, 60, 0.16) 0%, rgba(200, 162, 60, 0.05) 42%, rgba(200, 162, 60, 0) 72%);
  transform: rotate(9deg);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(200, 162, 60, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(200, 162, 60, 0.07) 1px, transparent 1px);
  background-size: 96px 96px;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, transparent 82%);
  mask-image: linear-gradient(to bottom, #000 0%, transparent 82%);
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  padding: 22px 0 40px;
}

.page-about .about-hero__title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(30px, 6.2vw, 52px);
  line-height: 1.16;
  letter-spacing: 0.01em;
  color: var(--white);
  margin: 14px 0 18px;
}

.page-about .about-hero__lede {
  max-width: 40em;
  margin: 0;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.85;
  color: rgba(244, 246, 241, 0.82);
}

.page-about .about-hero__side {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-soft);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-hero__side .stat {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px 12px;
  background: var(--ink);
}

.page-about .about-hero__side .stat__value {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.6vw, 34px);
  font-weight: 600;
  line-height: 1;
  color: var(--gold-l);
}

.page-about .about-hero__side .stat__label {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* ---------- 编号条带 ---------- */
.page-about .about-strip {
  position: relative;
  z-index: 1;
  display: flex;
  overflow-x: auto;
  border-top: 1px solid var(--line);
  background: linear-gradient(90deg, rgba(200, 162, 60, 0.07), rgba(200, 162, 60, 0));
  padding-inline: var(--gut);
  scrollbar-width: thin;
}

.page-about .about-strip span {
  flex: 0 0 auto;
  padding: 11px 18px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
  border-right: 1px solid var(--line-soft);
  white-space: nowrap;
  transition: color 0.16s ease;
}

.page-about .about-strip span:first-child {
  border-left: 1px solid var(--line-soft);
}

.page-about .about-strip span:hover {
  color: var(--gold-l);
}

/* ---------- 通用区块 ---------- */
.page-about .section {
  padding: clamp(46px, 7vw, 86px) 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  align-items: baseline;
  padding-bottom: 14px;
  margin-bottom: clamp(24px, 4vw, 44px);
  border-bottom: 1px solid var(--line);
}

.page-about .section-head__index {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold-m);
  text-transform: uppercase;
}

.page-about .section-head__title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(21px, 3.2vw, 29px);
  line-height: 1.35;
  color: var(--white);
  margin: 0;
}

.page-about .prose {
  max-width: 42em;
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(244, 246, 241, 0.8);
}

.page-about .prose + .prose {
  margin-top: 16px;
}

.page-about .prose a {
  color: var(--gold-l);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: border-color 0.16s ease;
}

.page-about .prose a:hover {
  border-bottom-color: var(--gold-l);
}

/* ---------- 01 起点 ---------- */
.page-about .about-origin__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 52px);
}

.page-about .about-family {
  border: 1px solid var(--line);
  background: var(--ink-2);
  align-self: start;
}

.page-about .about-family__head {
  margin: 0;
  padding: 12px 18px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gold);
  border-bottom: 1px solid var(--line);
}

.page-about .about-family__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 4px 16px;
  align-items: baseline;
  padding: 16px 18px;
  border-bottom: 1px solid var(--line-soft);
  border-left: 3px solid var(--gold-d);
}

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

.page-about .about-family__name {
  font-family: var(--font-serif);
  font-size: 17px;
  color: var(--white);
}

.page-about .about-family__range {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--gold-l);
  text-align: right;
}

.page-about .about-family__count {
  grid-column: 1 / -1;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* ---------- 02 时间线 ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 0 0 clamp(30px, 4vw, 46px) 30px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 5px;
  width: 11px;
  height: 11px;
  border: 1px solid var(--gold);
  background: var(--ink);
}

.page-about .about-timeline__item::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 24px;
  bottom: 0;
  width: 1px;
  background: var(--line-soft);
}

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

.page-about .about-timeline__item:last-child::after {
  display: none;
}

.page-about .about-timeline__mark {
  margin: 0;
  padding-top: 3px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold-l);
}

.page-about .about-timeline__body h3 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(17px, 2.2vw, 20px);
  line-height: 1.4;
  color: var(--white);
  margin: 0 0 10px;
}

.page-about .about-timeline__body .prose {
  font-size: 15.5px;
}

/* ---------- 03 返水 ---------- */
.page-about .about-rebate__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 48px);
}

.page-about .about-calc {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line-soft);
  align-self: start;
}

.page-about .about-calc__col {
  padding: 20px 22px;
  background: var(--ink-2);
  border-left: 3px solid var(--jade);
}

.page-about .about-calc__label {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--jade);
}

.page-about .about-calc__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(244, 246, 241, 0.82);
}

/* ---------- 04 团队 ---------- */
.page-about .about-figure {
  margin: 0 0 clamp(24px, 4vw, 40px);
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink-2);
}

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

.page-about .about-figure .media__caption {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 8px 14px;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--gold-l);
  background: rgba(5, 28, 22, 0.82);
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
}

.page-about .about-teams__list {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-teams__tab {
  appearance: none;
  background: transparent;
  border: 0;
  border-bottom: 2px solid transparent;
  margin: 0 24px 0 0;
  padding: 13px 0;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--muted);
  cursor: pointer;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-about .about-teams__tab[aria-selected="true"] {
  color: var(--gold-l);
  border-bottom-color: var(--gold);
}

.page-about .about-teams__tab:hover {
  color: var(--white);
}

.page-about .about-teams__tab:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

.page-about .about-teams__panel {
  padding: 26px 0 0;
}

.page-about .about-teams__panel + .about-teams__panel {
  border-top: 1px solid var(--line-soft);
  margin-top: 26px;
}

.page-about .about-teams__panel h3 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(18px, 2.4vw, 22px);
  color: var(--white);
  margin: 0 0 6px;
}

.page-about .about-teams__size {
  margin: 0 0 18px;
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--gold-m);
}

.page-about .about-teams__list-items {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 13px;
  max-width: 46em;
}

.page-about .about-teams__list-items li {
  position: relative;
  padding-left: 20px;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(244, 246, 241, 0.8);
}

.page-about .about-teams__list-items li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 9px;
  height: 1px;
  background: var(--gold);
}

/* ---------- 05 服务标准 ---------- */
.page-about .about-standards__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 48px);
}

.page-about .about-standards {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .about-standards__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 16px 0 16px 15px;
  border-bottom: 1px solid var(--line-soft);
  border-left: 3px solid var(--jade);
  transition: transform 0.18s ease;
}

.page-about .about-standards__item:hover {
  transform: translateY(-2px);
}

.page-about .about-standards__num {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gold-m);
  padding-top: 5px;
}

.page-about .about-standards__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(244, 246, 241, 0.82);
}

.page-about .about-standards__grid .about-figure {
  margin-bottom: 0;
}

/* ---------- 06 编号 ---------- */
.page-about .about-numbering__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 46px);
}

.page-about .about-numbering__grid .about-figure {
  margin-bottom: 0;
}

/* ---------- 收尾 ---------- */
.page-about .about-next {
  padding: clamp(50px, 8vw, 96px) 0 clamp(60px, 9vw, 110px);
  background: linear-gradient(180deg, rgba(200, 162, 60, 0.06), rgba(200, 162, 60, 0));
}

.page-about .about-next__inner {
  max-width: 60em;
}

.page-about .about-next__label {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold-m);
}

.page-about .about-next__title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(22px, 3.4vw, 30px);
  line-height: 1.3;
  color: var(--white);
  margin: 0 0 16px;
}

.page-about .about-next__text {
  max-width: 42em;
  margin: 0 0 28px;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(244, 246, 241, 0.78);
}

.page-about .about-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 760px) {
  .page-about .section-head {
    grid-template-columns: 152px minmax(0, 1fr);
    gap: 26px;
  }

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

  .page-about .about-family__row {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.1fr) minmax(0, 0.5fr);
    align-items: baseline;
  }

  .page-about .about-family__count {
    grid-column: auto;
    text-align: right;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(28px, 4.5vw, 68px);
    align-items: end;
    padding: 34px 0 52px;
  }

  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr) minmax(0, 1fr);
  }

  .page-about .about-family {
    grid-column: 3 / 4;
  }

  .page-about .about-rebate__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

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

  .page-about .about-standards__grid .about-figure--offset {
    margin-top: -44px;
  }

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

  .page-about .about-timeline__item {
    grid-template-columns: minmax(0, 2fr) minmax(0, 7fr);
    gap: clamp(24px, 4vw, 56px);
  }

  .page-about .about-timeline__mark {
    padding-top: 4px;
    text-align: left;
  }
}

/* ---------- 动效收敛 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .about-standards__item,
  .page-about .about-strip span,
  .page-about .about-teams__tab,
  .page-about .prose a {
    transition: none;
  }
}
<<<END>>>