.page-about {
  --about-ochre: #8A5A33;
  --about-rule: rgba(22, 16, 14, 0.14);
  --about-rule-light: rgba(251, 246, 238, 0.24);
  background: var(--cream);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-block: 20px 0;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  padding-block: 28px 44px;
}

.page-about .about-hero__title {
  font-family: var(--font-heavy);
  font-weight: 900;
  font-size: clamp(32px, 6.6vw, 68px);
  line-height: 1.06;
  letter-spacing: -0.01em;
  margin: 14px 0 0;
}

.page-about .about-hero__lead {
  max-width: 36em;
  margin-top: 20px;
  color: var(--ink);
}

.page-about .about-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .about-figures {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--about-rule);
  border: 1px solid var(--about-rule);
}

.page-about .about-figure {
  background: var(--paper);
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 16px 20px;
}

.page-about .about-figure__num {
  font-family: var(--mono);
  font-size: clamp(28px, 4vw, 36px);
  font-weight: 700;
  line-height: 1;
  color: var(--terra);
}

.page-about .about-figure__cap {
  font-size: 13px;
  line-height: 1.5;
  color: var(--sand);
  letter-spacing: 0.02em;
}

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

.page-about .about-banner__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 7 / 4;
  object-fit: cover;
}

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

/* ---------- 通用区块头 ---------- */
.page-about .about-head {
  max-width: 760px;
  margin-bottom: 36px;
}

.page-about .about-head__title {
  font-family: var(--font-heavy);
  font-weight: 900;
  font-size: clamp(26px, 4.2vw, 44px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  margin: 12px 0 0;
  color: inherit;
}

.page-about .about-head__lead {
  margin-top: 18px;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.8;
}

.page-about .section--ink .about-head__lead {
  color: rgba(251, 246, 238, 0.8);
}

.page-about .section--sea .about-head__lead {
  color: rgba(251, 246, 238, 0.82);
}

/* ---------- 01 商埠肌理 ---------- */
.page-about .about-lane {
  padding-block: 64px 72px;
}

.page-about .about-lane__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
}

.page-about .about-lane__rail {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--terra);
}

.page-about .about-lane__no {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.page-about .about-lane__label {
  font-family: var(--font-heavy);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.14em;
}

.page-about .about-lane__body {
  max-width: 720px;
}

.page-about .about-lane__body p {
  margin-top: 18px;
  font-size: 16px;
  line-height: 1.85;
}

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

.page-about .about-side-note {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--sand);
  margin: 0;
}

/* ---------- 02 楼层格局 ---------- */
.page-about .about-floors {
  padding-block: 72px 76px;
  background: var(--ink);
  color: var(--cream);
}

.page-about .about-floors__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}

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

.page-about .about-fig__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--about-rule-light);
}

.page-about .about-fig--profile .about-fig__img {
  aspect-ratio: 1 / 1;
}

.page-about .about-fig--ring .about-fig__img {
  aspect-ratio: 12 / 7;
}

.page-about .about-fig__cap {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(251, 246, 238, 0.62);
}

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

.page-about .about-floor {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 18px 0 18px 16px;
  border-bottom: 1px solid var(--about-rule-light);
  border-left: 6px solid var(--floor-color, var(--brass));
}

.page-about .about-floor--b1 { --floor-color: #6B5F57; }
.page-about .about-floor--l1 { --floor-color: #A63A28; }
.page-about .about-floor--l2 { --floor-color: #10394F; box-shadow: inset 1px 0 0 rgba(251, 246, 238, 0.32); }
.page-about .about-floor--l3 { --floor-color: #C08A2E; }
.page-about .about-floor--l4 { --floor-color: #3E6B5C; }
.page-about .about-floor--l5 { --floor-color: #8A5A33; }

.page-about .about-floor__code {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--brass);
}

.page-about .about-floor__name {
  font-family: var(--font-heavy);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.4;
  margin: 0;
  color: var(--cream);
}

.page-about .about-floor__desc {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(251, 246, 238, 0.74);
}

.page-about .about-floor__sample {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: rgba(251, 246, 238, 0.5);
}

.page-about .about-floors__foot {
  margin-top: 30px;
  padding-top: 18px;
  border-top: 1px solid var(--about-rule-light);
  font-size: 14px;
  line-height: 1.8;
  color: rgba(251, 246, 238, 0.76);
  max-width: 46em;
}

/* ---------- 03 业态构成 ---------- */
.page-about .about-mix {
  padding-block: 72px 76px;
}

.page-about .about-mix__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
}

.page-about .about-fig--ring .about-fig__cap {
  color: var(--sand);
}

.page-about .about-mix__notes {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--about-rule);
  border: 1px solid var(--about-rule);
  align-content: start;
}

.page-about .about-mix-note {
  background: var(--paper);
  padding: 22px 20px 24px;
}

.page-about .about-mix-note__name {
  font-family: var(--font-heavy);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.45;
  margin: 0 0 8px;
}

.page-about .about-mix-note p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

/* ---------- 04 发展历程 ---------- */
.page-about .about-history {
  padding-block: 64px 76px;
}

.page-about .about-years {
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  border-top: 1px solid var(--about-rule);
  border-bottom: 1px solid var(--about-rule);
}

.page-about .about-years ul {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  min-width: max-content;
}

.page-about .about-year {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 148px;
  padding: 16px 22px 15px;
  border-right: 1px solid var(--about-rule);
  text-decoration: none;
  color: var(--ink);
  scroll-snap-align: start;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-about .about-year:hover,
.page-about .about-year:focus-visible {
  background: var(--terra);
  color: var(--paper);
}

.page-about .about-year__num {
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
}

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

.page-about .about-year:hover .about-year__tag,
.page-about .about-year:focus-visible .about-year__tag {
  color: rgba(251, 246, 238, 0.82);
}

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

.page-about .about-stage {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding: 26px 0 26px 16px;
  border-bottom: 1px solid var(--about-rule);
  border-left: 3px solid transparent;
  scroll-margin-top: 120px;
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-stage:target {
  background: var(--paper);
  border-left-color: var(--brass);
}

.page-about .about-stage__year {
  font-size: 22px;
  font-weight: 700;
  color: var(--terra);
  letter-spacing: 0.04em;
}

.page-about .about-stage__name {
  font-family: var(--font-heavy);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.4;
  margin: 0 0 6px;
}

.page-about .about-stage__main p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
}

.page-about .about-history__link {
  margin-top: 28px;
  font-size: 14px;
  color: var(--sand);
}

.page-about .about-history__link a {
  color: var(--indigo);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  margin-left: 6px;
}

/* ---------- 05 团队 ---------- */
.page-about .about-team {
  padding-block: 72px 76px;
  background: var(--sea);
  color: var(--cream);
}

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--about-rule-light);
  border: 1px solid var(--about-rule-light);
}

.page-about .about-team-card {
  background: var(--sea);
  padding: 24px 20px 26px;
  display: grid;
  gap: 8px;
  align-content: start;
}

.page-about .about-team-card__no {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--brass);
}

.page-about .about-team-card__name {
  font-family: var(--font-heavy);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.4;
  margin: 0;
  color: var(--cream);
}

.page-about .about-team-card__count {
  font-size: 13px;
  font-weight: 700;
  color: var(--brass);
  margin-left: 6px;
}

.page-about .about-team-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(251, 246, 238, 0.8);
}

.page-about .about-team-card__rhythm {
  border-top: 1px solid var(--about-rule-light);
  padding-top: 10px;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: rgba(251, 246, 238, 0.62);
}

.page-about .about-team__foot {
  margin-top: 26px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(251, 246, 238, 0.8);
}

.page-about .about-team__link {
  color: var(--cream);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid var(--brass);
  margin-left: 6px;
}

/* ---------- 06 准则与合作生态 ---------- */
.page-about .about-principles {
  padding-block: 72px 76px;
}

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

.page-about .about-principle {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding: 24px 0;
  border-bottom: 1px solid var(--about-rule);
}

.page-about .about-principle__no {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--terra);
}

.page-about .about-principle__name {
  font-family: var(--font-heavy);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.4;
  margin: 0 0 8px;
}

.page-about .about-principle p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  max-width: 44em;
}

.page-about .about-eco {
  margin-top: 44px;
  padding: 28px 22px 30px;
  background: var(--cream);
  border-left: 6px solid var(--celadon);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
}

.page-about .about-eco__name {
  font-family: var(--font-heavy);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.4;
  margin: 0 0 12px;
}

.page-about .about-eco__text p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.8;
  max-width: 42em;
}

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

.page-about .about-eco__tags {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-content: start;
}

/* ---------- 下一步 ---------- */
.page-about .about-next {
  padding-block: 64px 88px;
}

.page-about .about-next__grid {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--about-rule);
  border: 1px solid var(--about-rule);
}

.page-about .about-next__item {
  display: grid;
  gap: 8px;
  padding: 22px 20px 24px;
  background: var(--paper);
  text-decoration: none;
  color: var(--ink);
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-about .about-next__item:hover,
.page-about .about-next__item:focus-visible {
  background: var(--terra);
  color: var(--paper);
}

.page-about .about-next__no {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--brass);
}

.page-about .about-next__title {
  font-family: var(--font-heavy);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.45;
}

.page-about .about-next__desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--sand);
}

.page-about .about-next__item:hover .about-next__desc,
.page-about .about-next__item:focus-visible .about-next__desc {
  color: rgba(251, 246, 238, 0.82);
}

/* ---------- 窄屏兜底 ---------- */
@media (max-width: 560px) {
  .page-about .about-hero__acts .btn {
    flex: 1 1 100%;
    text-align: center;
  }

  .page-about .about-figure__num {
    font-size: 26px;
  }

  .page-about .about-year {
    min-width: 128px;
    padding: 14px 16px 13px;
  }

  .page-about .about-year__num {
    font-size: 22px;
  }
}

/* ---------- 桌面：展开网格 ---------- */
@media (min-width: 760px) {
  .page-about .about-next__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-about .about-team-card {
    padding: 28px 26px 30px;
  }

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

  .page-about .about-eco {
    grid-template-columns: minmax(0, 3fr) minmax(0, 1fr);
    padding: 32px 30px 34px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    column-gap: 64px;
    align-items: end;
    padding-block: 40px 56px;
  }

  .page-about .about-lane__grid {
    grid-template-columns: 108px minmax(0, 1fr) 44px;
    column-gap: 40px;
    align-items: start;
  }

  .page-about .about-lane__rail {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    position: sticky;
    top: 120px;
    padding-top: 6px;
  }

  .page-about .about-lane__label {
    writing-mode: vertical-rl;
    letter-spacing: 0.3em;
    font-size: 13px;
  }

  .page-about .about-side-note {
    writing-mode: vertical-rl;
    justify-self: end;
    align-self: start;
    padding-top: 10px;
    letter-spacing: 0.26em;
  }

  .page-about .about-floors__body {
    grid-template-columns: minmax(0, 4fr) minmax(0, 6fr);
    column-gap: 56px;
    align-items: start;
  }

  .page-about .about-floor {
    grid-template-columns: 56px minmax(0, 1fr) 110px;
    align-items: baseline;
    column-gap: 22px;
    padding: 20px 0 20px 20px;
  }

  .page-about .about-floor__sample {
    text-align: right;
  }

  .page-about .about-mix__body {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    column-gap: 56px;
    align-items: start;
  }

  .page-about .about-stage {
    grid-template-columns: 130px minmax(0, 1fr);
    column-gap: 40px;
    padding: 28px 0 28px 22px;
  }

  .page-about .about-stage__year {
    font-size: 26px;
    padding-top: 2px;
  }

  .page-about .about-principle {
    grid-template-columns: 90px minmax(0, 1fr);
    column-gap: 32px;
    padding: 28px 0;
  }
}

@media (min-width: 1100px) {
  .page-about .about-lane__grid {
    grid-template-columns: 128px minmax(0, 1fr) 52px;
    column-gap: 56px;
  }

  .page-about .about-mix__body {
    column-gap: 72px;
  }

  .page-about .about-floors__body {
    column-gap: 72px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-year,
  .page-about .about-stage,
  .page-about .about-next__item {
    transition: none;
  }

  .page-about .about-years {
    scroll-behavior: auto;
  }
}
<<<END>>>