.page-about {
  --ab-pad: clamp(56px, 9vw, 108px);
  --ab-rule: rgba(36, 28, 24, 0.14);
  --ab-rule-dark: rgba(200, 164, 93, 0.26);
  --ab-gold-tint: rgba(200, 164, 93, 0.1);
  background: var(--porcelain);
  color: var(--brown);
  overflow-x: hidden;
}

/* 面包屑 */
.page-about .about-crumbs {
  padding-top: clamp(16px, 3vw, 28px);
}
.page-about .about-crumbs .breadcrumbs-list {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}
.page-about .about-crumbs a {
  color: var(--mist);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}
.page-about .about-crumbs a:hover,
.page-about .about-crumbs a:focus-visible {
  color: var(--gold);
}

/* 首屏 */
.page-about .about-hero {
  background: var(--cream);
  padding-block: clamp(24px, 4vw, 48px) clamp(44px, 7vw, 84px);
}
.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}
.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(34px, 6.6vw, 76px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--brown);
  margin: 14px 0 0;
}
.page-about .about-hero__lead {
  max-width: 33em;
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(36, 28, 24, 0.82);
}
.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(10px, 2vw, 24px);
  margin-top: clamp(26px, 4vw, 40px);
  border-top: 1px solid var(--ab-rule);
  padding-top: clamp(16px, 2.4vw, 24px);
}
.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}
.page-about .about-stat__num {
  font-family: var(--font-display);
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.1;
  color: var(--brown);
  font-variant-numeric: tabular-nums;
}
.page-about .about-stat__label {
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: var(--mist);
}
.page-about .about-hero__figure {
  margin: 0;
  border: 1px solid var(--ab-rule);
  background: var(--ink);
  box-shadow: var(--shadow-soft);
}
.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 6 / 7;
  object-fit: cover;
}
.page-about .about-index {
  margin-top: clamp(18px, 2.6vw, 26px);
  border-top: 1px solid var(--ab-rule);
  padding-top: 14px;
}
.page-about .about-index__title {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mist);
}
.page-about .about-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
}
.page-about .about-index__list a {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 9px 6px;
  font-size: 14px;
  color: var(--brown);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.page-about .about-index__list a .index-num {
  color: var(--gold);
  font-size: 12px;
  letter-spacing: 0.1em;
  font-variant-numeric: tabular-nums;
}
.page-about .about-index__list a:hover,
.page-about .about-index__list a:focus-visible {
  background: var(--ab-gold-tint);
  border-bottom-color: var(--gold);
}
.page-about .about-index__list a:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

/* 沿革 */
.page-about .about-origin {
  background: var(--porcelain);
  padding-block: var(--ab-pad);
}
.page-about .about-origin__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
}
.page-about .about-origin__note {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
  max-width: 24em;
}
.page-about .about-origin__body p {
  max-width: 34em;
  margin: 0 0 1.15em;
  font-size: 16px;
  line-height: 1.78;
  color: rgba(36, 28, 24, 0.86);
}
.page-about .about-origin__body p:last-child {
  margin-bottom: 0;
}
.page-about .about-origin__body a {
  color: var(--brown);
  text-decoration: none;
  border-bottom: 1px solid var(--gold);
  padding-bottom: 1px;
  transition: color var(--dur) var(--ease);
}
.page-about .about-origin__body a:hover,
.page-about .about-origin__body a:focus-visible {
  color: var(--gold);
}

/* 里程碑横带 */
.page-about .about-milestones {
  background: var(--ink);
  color: var(--porcelain);
  padding-block: var(--ab-pad);
  position: relative;
  overflow: hidden;
}
.page-about .about-milestones::before {
  content: "";
  position: absolute;
  inset: -20% -10% auto auto;
  width: min(560px, 70vw);
  aspect-ratio: 1;
  background: radial-gradient(circle, rgba(200, 164, 93, 0.16), transparent 68%);
  pointer-events: none;
}
.page-about .about-milestones .container {
  position: relative;
  z-index: 1;
}
.page-about .about-milestones .section-title {
  color: var(--porcelain);
}
.page-about .about-milestones__head {
  max-width: 30em;
}
.page-about .about-milestones__line {
  display: none;
  width: 100%;
  height: 40px;
  margin: 32px 0 -8px;
  color: var(--ab-rule-dark);
}
.page-about .about-milestones__list {
  list-style: none;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0 0 8px;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(230px, 1fr);
  gap: clamp(16px, 2.4vw, 28px);
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}
.page-about .about-milestone {
  border-top: 1px solid var(--ab-rule-dark);
  padding-top: 16px;
  min-width: 0;
  transition: border-color var(--dur) var(--ease);
}
.page-about .about-milestone__year {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(30px, 4vw, 42px);
  line-height: 1;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
  transition: transform var(--dur) var(--ease);
}
.page-about .about-milestone__title {
  margin: 12px 0 8px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 19px;
  color: var(--porcelain);
}
.page-about .about-milestone__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: rgba(251, 248, 242, 0.78);
}
.page-about .about-milestone__more {
  margin: 0;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  font-size: 13px;
  line-height: 1.7;
  color: var(--gold-soft);
  transition: max-height var(--dur) var(--ease), opacity var(--dur) var(--ease), margin var(--dur) var(--ease);
}
.page-about .about-milestone:hover,
.page-about .about-milestone:focus,
.page-about .about-milestone:focus-within {
  border-top-color: var(--gold);
}
.page-about .about-milestone:hover .about-milestone__year,
.page-about .about-milestone:focus .about-milestone__year,
.page-about .about-milestone:focus-within .about-milestone__year {
  transform: translateY(-3px);
}
.page-about .about-milestone:hover .about-milestone__more,
.page-about .about-milestone:focus .about-milestone__more,
.page-about .about-milestone:focus-within .about-milestone__more {
  max-height: 9em;
  opacity: 1;
  margin-top: 10px;
}
.page-about .about-milestone:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 6px;
}

/* 团队 */
.page-about .about-team {
  background: var(--cream);
  padding-block: var(--ab-pad);
}
.page-about .about-team__head {
  max-width: 42em;
}
.page-about .about-team__intro {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: rgba(36, 28, 24, 0.8);
  max-width: 36em;
}
.page-about .about-team__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--ab-rule);
  border: 1px solid var(--ab-rule);
  margin-top: clamp(26px, 4vw, 44px);
}
.page-about .about-group {
  background: var(--porcelain);
  padding: clamp(20px, 3vw, 32px);
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
  transition: box-shadow var(--dur) var(--ease), background var(--dur) var(--ease);
}
.page-about .about-group__num {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}
.page-about .about-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 22px;
  color: var(--brown);
}
.page-about .about-group__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(36, 28, 24, 0.82);
  flex: 1 1 auto;
}
.page-about .about-group .tag {
  align-self: flex-start;
  margin-top: 4px;
}
.page-about .about-group:hover,
.page-about .about-group:focus-within {
  box-shadow: inset 0 0 0 1px var(--gold);
}
.page-about .about-group:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: -3px;
}
.page-about .about-team__figure {
  margin: clamp(26px, 4vw, 44px) 0 0;
  border: 1px solid var(--ab-rule);
  background: var(--ink);
}
.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}
.page-about .about-team__figure .image-caption {
  padding: 12px 16px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--gold-soft);
}

/* 维护节奏 */
.page-about .about-method {
  background: var(--porcelain);
  padding-block: var(--ab-pad);
}
.page-about .about-method__head {
  max-width: 40em;
}
.page-about .about-method__intro {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: rgba(36, 28, 24, 0.8);
  max-width: 36em;
}
.page-about .about-flow {
  list-style: none;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 0;
  border-top: 1px solid var(--ab-rule);
}
.page-about .about-flow__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(14px, 2.6vw, 30px);
  padding: clamp(18px, 2.6vw, 28px) 0;
  border-bottom: 1px solid var(--ab-rule);
  align-items: start;
}
.page-about .about-flow__num {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
  padding-top: 6px;
}
.page-about .about-flow__body h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 21px;
  color: var(--brown);
}
.page-about .about-flow__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(36, 28, 24, 0.82);
  max-width: 36em;
}
.page-about .about-method__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(14px, 2.4vw, 26px);
  margin-top: clamp(26px, 4vw, 40px);
  border-top: 1px solid var(--gold);
  padding-top: clamp(18px, 2.6vw, 26px);
}
.page-about .about-method__fact {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}
.page-about .about-method__fact-num {
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.1;
  color: var(--brown);
  font-variant-numeric: tabular-nums;
}
.page-about .about-method__fact-label {
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: var(--mist);
}

/* 服务地区 */
.page-about .about-region {
  background: var(--ink-soft);
  color: var(--porcelain);
  padding-block: var(--ab-pad);
}
.page-about .about-region .section-title {
  color: var(--porcelain);
}
.page-about .about-region__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}
.page-about .about-region__text > p {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(251, 248, 242, 0.8);
  max-width: 34em;
}
.page-about .about-scenes {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  border-top: 1px solid var(--ab-rule-dark);
}
.page-about .about-scenes li {
  padding: 14px 0 14px 18px;
  position: relative;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(251, 248, 242, 0.78);
  border-bottom: 1px solid var(--ab-rule-dark);
}
.page-about .about-scenes li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  width: 7px;
  height: 7px;
  background: var(--gold);
  transform: rotate(45deg);
}
.page-about .about-scenes__name {
  display: block;
  font-family: var(--font-display);
  font-size: 16px;
  color: var(--gold-soft);
  margin-bottom: 4px;
}
.page-about .about-scenes a,
.page-about .about-region__contact a {
  color: var(--gold-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--ab-rule-dark);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.page-about .about-scenes a:hover,
.page-about .about-scenes a:focus-visible,
.page-about .about-region__contact a:hover,
.page-about .about-region__contact a:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--gold);
}
.page-about .about-region__contact {
  font-size: 14px !important;
  color: rgba(251, 248, 242, 0.7) !important;
}
.page-about .about-region__figure {
  margin: 0;
  border: 1px solid var(--ab-rule-dark);
  background: var(--ink);
}
.page-about .about-region__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}
.page-about .about-region__figure .image-caption {
  padding: 12px 16px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--gold-soft);
}

/* 品牌原则 */
.page-about .about-principles {
  background: var(--cream);
  padding-block: var(--ab-pad);
}
.page-about .about-principles__head {
  max-width: 32em;
}
.page-about .about-principles__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 36px);
  margin-top: clamp(26px, 4vw, 44px);
}
.page-about .about-principle {
  border-top: 1px solid var(--gold);
  padding-top: 18px;
  min-width: 0;
}
.page-about .about-principle__num {
  display: block;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}
.page-about .about-principle h3 {
  margin: 10px 0 10px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 26px;
  letter-spacing: 0.04em;
  color: var(--brown);
}
.page-about .about-principle p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(36, 28, 24, 0.8);
  max-width: 30em;
}

/* 结尾入口 */
.page-about .about-cta {
  background: var(--ink);
  color: var(--porcelain);
  padding-block: clamp(48px, 7vw, 88px);
}
.page-about .about-cta .section-title {
  color: var(--porcelain);
}
.page-about .about-cta__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: end;
}
.page-about .about-cta__title {
  margin-top: 10px;
  max-width: 22em;
}
.page-about .about-cta__lead {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(251, 248, 242, 0.76);
  max-width: 34em;
}
.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-about .about-cta__actions .btn {
  flex: 1 1 auto;
  min-width: 150px;
  text-align: center;
}

/* 断点 */
@media (min-width: 720px) {
  .page-about .about-team__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .about-method__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .about-principles__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .about-flow__item {
    grid-template-columns: 64px minmax(0, 1fr);
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
    gap: clamp(36px, 5vw, 72px);
  }
  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.22fr);
    gap: clamp(32px, 6vw, 92px);
  }
  .page-about .about-region__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    align-items: center;
  }
  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1.1fr) auto;
    align-items: end;
  }
  .page-about .about-milestones__line {
    display: block;
  }
  .page-about .about-milestones__list {
    grid-auto-flow: row;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    overflow: visible;
    padding-bottom: 0;
  }
  .page-about .about-team__figure {
    margin-top: clamp(34px, 5vw, 56px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-milestone,
  .page-about .about-milestone__year,
  .page-about .about-milestone__more,
  .page-about .about-group,
  .page-about .about-index__list a {
    transition: none;
  }
  .page-about .about-milestone:hover .about-milestone__year,
  .page-about .about-milestone:focus .about-milestone__year,
  .page-about .about-milestone:focus-within .about-milestone__year {
    transform: none;
  }
}
<<<END>>>