/* ========== 品牌中心 /brand/ ========== */
.page-about {
  --about-rail-w: 208px;
  --about-gap: clamp(30px, 5vw, 68px);
  display: block;
  padding-bottom: clamp(48px, 8vw, 104px);
}

.page-about .about-crumb {
  padding-top: calc(var(--header-space) + 6px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: clamp(22px, 4vw, 46px);
}

.page-about .about-hero h1 {
  max-width: 20em;
  margin: 14px 0 20px;
  font-size: clamp(29px, 5.2vw, 54px);
  line-height: 1.16;
}

.page-about .about-hero .lede {
  max-width: 38em;
  color: var(--soft);
  margin: 0;
}

/* ---------- 关键数字带 ---------- */
.page-about .about-stats {
  list-style: none;
  margin: clamp(30px, 4.5vw, 52px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-stat {
  background: var(--ink);
  padding: 18px 16px 20px;
  transition: background var(--dur) var(--curve);
}

.page-about .about-stat:hover,
.page-about .about-stat:focus-within {
  background: var(--panel);
}

.page-about .about-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(23px, 3.6vw, 34px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: .02em;
  color: var(--orange);
}

.page-about .about-stat__unit {
  font-size: .48em;
  margin-left: 3px;
  vertical-align: baseline;
}

.page-about .about-stat__label {
  display: block;
  margin-top: 9px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--soft);
}

/* ---------- 主布局：左轨 + 内容流 ---------- */
.page-about .about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  margin-top: clamp(44px, 6vw, 84px);
}

/* ---------- 左侧档案轨 ---------- */
.page-about .about-rail {
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

.page-about .about-rail__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--stone);
}

.page-about .about-rail__title--years {
  margin-top: 22px;
}

.page-about .about-rail__list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.page-about .about-rail__list::-webkit-scrollbar {
  display: none;
}

.page-about .about-rail__link {
  display: flex;
  align-items: baseline;
  gap: 9px;
  white-space: nowrap;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  color: var(--soft);
  font-size: 13px;
  line-height: 1.4;
  text-decoration: none;
  transition: color var(--dur) var(--curve), border-color var(--dur) var(--curve), background var(--dur) var(--curve);
}

.page-about .about-rail__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-about .about-rail__years {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}

.page-about .about-rail__year {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .03em;
  color: var(--stone);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
  transition: color var(--dur) var(--curve), border-color var(--dur) var(--curve);
}

/* ---------- 内容流 ---------- */
.page-about .about-flow {
  display: flex;
  flex-direction: column;
  gap: clamp(52px, 8vw, 108px);
}

.page-about .about-section {
  scroll-margin-top: calc(var(--header-space) + 26px);
}

.page-about .about-section__head {
  max-width: 40rem;
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-about .about-section h2 {
  margin: 12px 0 0;
  font-size: clamp(23px, 3.4vw, 36px);
  line-height: 1.24;
}

.page-about .about-flow p {
  max-width: 38em;
  margin: 0 0 1em;
  color: var(--soft);
  line-height: 1.78;
}

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

.page-about .about-flow a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(52, 227, 200, .38);
  transition: border-color var(--dur) var(--curve), color var(--dur) var(--curve);
}

.page-about .about-flow a:hover,
.page-about .about-flow a:focus-visible {
  color: var(--white);
  border-color: var(--orange);
}

/* ---------- 01 常见困扰 ---------- */
.page-about .about-pains {
  list-style: none;
  margin: clamp(24px, 3.5vw, 38px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-pain {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background: var(--ink);
  padding: 16px 4px;
  transition: background var(--dur) var(--curve);
}

.page-about .about-pain:hover {
  background: var(--panel);
}

.page-about .about-pain__tag {
  flex: 0 0 auto;
  width: 26px;
  height: 26px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  font-size: 12px;
  color: var(--cyan);
}

.page-about .about-pain__text {
  color: var(--soft);
  line-height: 1.7;
}

/* ---------- 02 改版档案卡 ---------- */
.page-about .about-figure {
  margin: 0 0 clamp(26px, 4vw, 42px);
}

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

.page-about .about-figure--schema .figure__frame {
  aspect-ratio: 2 / 1;
}

.page-about .about-figure--clock .figure__frame {
  aspect-ratio: 1080 / 760;
}

.page-about .about-figure--map .figure__frame {
  aspect-ratio: 1200 / 900;
}

.page-about .about-sheets {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 26px);
}

.page-about .about-sheet {
  position: relative;
  scroll-margin-top: calc(var(--header-space) + 26px);
}

.page-about .about-sheet .label {
  display: inline-block;
  margin-bottom: 12px;
}

.page-about .about-sheet .paper__title {
  margin: 0 0 12px;
}

.page-about .about-flow .about-sheet p {
  max-width: 40em;
  margin: 0;
  color: var(--paper-ink);
  opacity: .8;
  line-height: 1.75;
}

/* ---------- 03 团队 ---------- */
.page-about .about-team {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  margin-top: clamp(26px, 4vw, 40px);
}

.page-about .about-team .about-figure {
  margin: 0;
}

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

.page-about .about-shift {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-shift__key {
  display: block;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--moss);
}

.page-about .about-shift__val {
  display: block;
  margin: 7px 0 6px;
  font-size: clamp(19px, 2.4vw, 24px);
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: .02em;
}

.page-about .about-shift__note {
  display: block;
  font-size: 14px;
  line-height: 1.65;
  color: var(--stone);
}

/* ---------- 04 服务覆盖 ---------- */
.page-about .about-coverage {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 46px);
  align-items: center;
}

.page-about .about-coverage .about-figure {
  margin: 0;
}

/* ---------- 05 协作 ---------- */
.page-about .about-facts {
  list-style: none;
  margin: clamp(24px, 3.5vw, 38px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .about-fact {
  display: flex;
  align-items: baseline;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-fact__key {
  flex: 0 0 auto;
  min-width: 3.2em;
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
  letter-spacing: .02em;
}

.page-about .about-fact__body {
  color: var(--stone);
  line-height: 1.7;
}

.page-about .about-fact__body strong {
  display: block;
  margin-bottom: 3px;
  color: var(--white);
  font-weight: 600;
}

/* ---------- CTA ---------- */
.page-about .about-cta {
  position: relative;
  padding: clamp(28px, 4.5vw, 46px) clamp(22px, 3.5vw, 44px);
  background: linear-gradient(135deg, var(--panel) 0%, var(--ink) 62%);
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
}

.page-about .about-cta h2 {
  margin: 0 0 14px;
  font-size: clamp(21px, 2.9vw, 30px);
  line-height: 1.3;
}

.page-about .about-cta p {
  color: var(--soft);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}

/* ========== 响应式 ========== */
@media (min-width: 720px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-stat {
    padding: 22px 20px 24px;
  }
}

@media (min-width: 860px) {
  .page-about .about-sheets {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: clamp(20px, 3vw, 32px);
  }

  .page-about .about-sheet:nth-child(1) {
    grid-column: 1 / span 6;
  }

  .page-about .about-sheet:nth-child(2) {
    grid-column: 7 / span 6;
    margin-top: clamp(30px, 5vw, 68px);
  }

  .page-about .about-sheet:nth-child(3) {
    grid-column: 3 / span 8;
    margin-top: clamp(8px, 2vw, 22px);
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: start;
  }

  .page-about .about-coverage {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  }
}

@media (min-width: 940px) {
  .page-about .about-layout {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: clamp(38px, 4.5vw, 76px);
  }

  .page-about .about-rail {
    position: sticky;
    top: calc(var(--header-space) + 20px);
    align-self: start;
    border-top: 0;
    border-left: 1px solid var(--line);
    padding: 4px 0 4px 20px;
  }

  .page-about .about-rail__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .about-rail__link {
    white-space: normal;
    padding: 9px 8px 9px 0;
    border: 0;
    border-radius: 0;
  }

  .page-about .about-rail__link:hover,
  .page-about .about-rail__link:focus-visible {
    background: none;
    border-color: transparent;
  }

  .page-about .about-rail__link:hover .about-rail__num,
  .page-about .about-rail__link:focus-visible .about-rail__num {
    color: var(--orange);
  }

  .page-about .about-rail__years {
    flex-direction: column;
    gap: 8px;
  }

  .page-about .about-rail__year:hover,
  .page-about .about-rail__year:focus-visible {
    color: var(--orange);
    border-color: var(--orange);
  }

  .page-about .about-pain {
    padding: 20px 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-stat,
  .page-about .about-pain,
  .page-about .about-rail__link,
  .page-about .about-rail__year,
  .page-about .about-flow a {
    transition: none;
  }
}
<<<END>>>