.page-about{
  --about-gap: clamp(18px, 3vw, 32px);
  --about-block: clamp(46px, 7vw, 88px);
  --about-hair: 1px solid var(--line);
  color: var(--frost);
  font-family: var(--font-body);
  background:
    radial-gradient(880px 520px at 88% -6%, rgba(47, 212, 196, .10), transparent 60%),
    radial-gradient(760px 460px at 0% 8%, rgba(200, 64, 46, .13), transparent 64%),
    var(--indigo);
  padding: clamp(16px, 3vw, 30px) 0 clamp(56px, 9vw, 108px);
  overflow-x: clip;
}

.page-about h1,
.page-about h2,
.page-about h3{
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -.04em;
  line-height: 1.12;
  margin: 0;
}

.page-about h1{
  font-size: clamp(32px, 7.4vw, 60px);
  line-height: 1.03;
  letter-spacing: -.05em;
  margin: .26em 0 .34em;
}

.page-about .section-title{
  font-size: clamp(23px, 4vw, 36px);
  line-height: 1.18;
}

.page-about .eyebrow{
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--sand);
  margin: 0;
}

.page-about .lead{
  color: var(--silver);
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.85;
  margin: 0;
  max-width: 46ch;
}

.page-about .breadcrumb{
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-about .text-link{
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 212, 196, .42);
  padding-bottom: 2px;
  font-size: 15px;
}

.page-about .text-link:hover,
.page-about .text-link:focus-visible{
  color: var(--frost);
  border-bottom-color: var(--frost);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero{
  display: grid;
  gap: clamp(22px, 4vw, 46px);
  padding-bottom: clamp(30px, 5vw, 56px);
  border-bottom: var(--about-hair);
}

.page-about .about-hero__copy{
  min-width: 0;
}

.page-about .hero-facts{
  display: grid;
  gap: 16px;
  margin: clamp(24px, 4vw, 34px) 0 0;
  padding-top: 18px;
  border-top: var(--about-hair);
}

.page-about .hero-fact{
  display: grid;
  gap: 4px;
}

.page-about .hero-fact dt{
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--sand);
}

.page-about .hero-fact dd{
  margin: 0;
  font-size: 15px;
  color: var(--frost);
  letter-spacing: -.01em;
}

.page-about .about-hero__visual{
  position: relative;
  margin: 0;
  border: var(--about-hair);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--indigo-panel);
  box-shadow: 0 36px 70px -44px rgba(0, 0, 0, .95);
  isolation: isolate;
}

.page-about .about-hero__visual img{
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 16 / 10;
}

.page-about .about-hero__visual::after{
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 21, 48, .12) 34%, rgba(11, 21, 48, .82) 100%);
  pointer-events: none;
  z-index: 1;
}

.page-about .about-hero__visual figcaption{
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 14px;
  z-index: 2;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--frost);
  font-family: var(--font-mono);
  letter-spacing: .02em;
}

.page-about .visual-note{
  position: absolute;
  top: 16px;
  right: 12px;
  z-index: 2;
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--sand);
  opacity: .85;
}

/* ---------- 章节骨架 ---------- */
.page-about .about-section{
  margin-top: var(--about-block);
  min-width: 0;
}

.page-about .section-head{
  display: grid;
  gap: 12px;
  max-width: 64ch;
  margin-bottom: clamp(22px, 3.5vw, 36px);
}

/* ---------- 时间线 ---------- */
.page-about .chronicle{
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--about-hair);
}

.page-about .chronicle__item{
  position: relative;
  display: grid;
  gap: 8px;
  padding: 22px 0 24px 20px;
  border-bottom: var(--about-hair);
}

.page-about .chronicle__item::before{
  content: "";
  position: absolute;
  left: 0;
  top: 30px;
  width: 6px;
  height: 6px;
  background: var(--cinnabar);
  border-radius: 1px;
}

.page-about .chronicle__year{
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-mono);
  line-height: 1;
}

.page-about .chronicle__year span{
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--cinnabar);
  font-variant-numeric: tabular-nums;
}

.page-about .chronicle__year em{
  font-style: normal;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--sand);
}

.page-about .chronicle__body h3{
  font-size: clamp(17px, 2.2vw, 21px);
  margin: 4px 0 8px;
}

.page-about .chronicle__body p{
  margin: 0;
  color: var(--silver);
  font-size: 15px;
  line-height: 1.85;
  max-width: 58ch;
}

/* ---------- 空间 ---------- */
.page-about .space-grid{
  display: grid;
  gap: var(--about-gap);
}

.page-about .space-figure{
  margin: 0;
  border: var(--about-hair);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--indigo-panel);
}

.page-about .space-figure img{
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 3 / 2;
}

.page-about .space-figure figcaption{
  padding: 12px 16px 14px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--silver);
  border-top: var(--about-hair);
}

.page-about .space-diagram{
  border: var(--about-hair);
  border-radius: var(--radius);
  background: rgba(20, 38, 79, .62);
  padding: 18px 18px 16px;
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-about .plan-svg{
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
}

.page-about .plan-svg rect{
  fill: none;
  stroke: var(--line);
  stroke-width: 1.4;
}

.page-about .plan-svg .plan-hall{
  fill: rgba(200, 64, 46, .16);
  stroke: var(--cinnabar);
  stroke-width: 1.6;
}

.page-about .plan-legend{
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--silver);
}

.page-about .plan-legend li{
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.page-about .dot{
  width: 9px;
  height: 9px;
  border-radius: 2px;
  display: inline-block;
}

.page-about .dot--rooms{ border: 1.4px solid var(--line); }
.page-about .dot--salons{ border: 1.4px solid var(--line); background: rgba(244, 241, 234, .18); }
.page-about .dot--hall{ background: rgba(200, 64, 46, .5); border: 1.4px solid var(--cinnabar); }

.page-about .space-list{
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-about .space-item{
  border: var(--about-hair);
  border-radius: var(--radius-sm);
  background: rgba(20, 38, 79, .55);
  padding: 0 16px;
}

.page-about .space-item summary{
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 15px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: -.02em;
  color: var(--frost);
}

.page-about .space-item summary::-webkit-details-marker{ display: none; }

.page-about .space-item summary span{
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--sand);
  white-space: nowrap;
}

.page-about .space-item[open] summary{
  color: var(--mint);
}

.page-about .space-item p{
  margin: 0;
  padding-bottom: 16px;
  color: var(--silver);
  font-size: 14.5px;
  line-height: 1.8;
}

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

/* ---------- 团队 ---------- */
.page-about .team-grid{
  display: grid;
  gap: var(--about-gap);
}

.page-about .team-figure{
  margin: 0;
  border: var(--about-hair);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--indigo-panel);
}

.page-about .team-figure img{
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 3 / 2;
}

.page-about .team-figure figcaption{
  padding: 12px 16px 14px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--silver);
  border-top: var(--about-hair);
}

.page-about .ledger{
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--about-hair);
  align-content: start;
}

.page-about .ledger-row{
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 4px 16px;
  padding: 14px 0;
  border-bottom: var(--about-hair);
}

.page-about .ledger-role{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15.5px;
  letter-spacing: -.01em;
  color: var(--frost);
}

.page-about .ledger-num{
  font-family: var(--font-mono);
  font-size: clamp(19px, 2.6vw, 24px);
  font-weight: 700;
  line-height: 1;
  color: var(--frost);
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.page-about .ledger-desc{
  grid-column: 1 / -1;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--silver);
}

.page-about .ledger-row--total{
  border-bottom: 0;
  border-top: 2px solid var(--cinnabar);
}

.page-about .ledger-row--total .ledger-num{
  color: var(--sand);
}

.page-about .steps{
  list-style: none;
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-about .step{
  position: relative;
  padding: 16px 0 0;
  border-top: var(--about-hair);
}

.page-about .step::before{
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  width: 24px;
  height: 3px;
  background: var(--cinnabar);
}

.page-about .step__idx{
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--sand);
}

.page-about .step h3{
  font-size: 16.5px;
  margin: 6px 0 6px;
}

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

/* ---------- 会员 ---------- */
.page-about .members-grid{
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-about .members-copy{
  display: grid;
  gap: 14px;
  align-content: start;
  min-width: 0;
}

.page-about .members-copy p{
  margin: 0;
  color: var(--silver);
  font-size: 15px;
  line-height: 1.85;
  max-width: 46ch;
}

.page-about .tiers{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-about .tier{
  display: grid;
  gap: 6px;
  padding: 20px 18px;
  border: var(--about-hair);
  border-radius: var(--radius-sm);
  background: linear-gradient(165deg, rgba(20, 38, 79, .92), rgba(11, 21, 48, .55));
}

.page-about .tier--top{
  border-color: rgba(200, 64, 46, .6);
  box-shadow: inset 0 0 0 1px rgba(200, 64, 46, .22);
}

.page-about .tier__level{
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--sand);
}

.page-about .tier__name{
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 25px;
  letter-spacing: -.04em;
  color: var(--frost);
}

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

.page-about .events-panel{
  margin-top: clamp(24px, 4vw, 38px);
  display: grid;
  gap: 14px;
  padding: clamp(20px, 3vw, 28px);
  border: var(--about-hair);
  border-left: 3px solid var(--cinnabar);
  border-radius: var(--radius);
  background: rgba(20, 38, 79, .5);
}

.page-about .events-num{
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-mono);
}

.page-about .events-num strong{
  font-size: clamp(32px, 5vw, 46px);
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--frost);
  font-variant-numeric: tabular-nums;
}

.page-about .events-num span{
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--sand);
}

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

.page-about .events-list li{
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--frost);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 12px;
  background: rgba(11, 21, 48, .6);
}

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

/* ---------- 合作与认可 ---------- */
.page-about .trust-grid{
  display: grid;
  gap: 14px;
}

.page-about .trust-card{
  padding: 22px 20px 24px;
  border: var(--about-hair);
  border-radius: var(--radius);
  background: rgba(20, 38, 79, .55);
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-about .trust-card__k{
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--cinnabar);
}

.page-about .trust-card h3{
  font-size: clamp(16px, 2.1vw, 19px);
  line-height: 1.42;
  letter-spacing: -.025em;
}

.page-about .trust-card p{
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--silver);
}

/* ---------- 结尾 ---------- */
.page-about .about-cta{
  margin-top: var(--about-block);
  padding-top: clamp(26px, 4vw, 40px);
  border-top: 2px solid var(--cinnabar);
  display: grid;
  gap: 22px;
}

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

.page-about .about-cta__copy p{
  margin: 0;
  color: var(--silver);
  font-size: 15px;
  line-height: 1.8;
  max-width: 48ch;
}

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

.page-about .cta-actions .btn{
  flex: 1 1 auto;
  min-width: 140px;
  text-align: center;
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px){
  .page-about .hero-facts{
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .trust-grid{
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .steps{
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px 24px;
  }
}

@media (min-width: 860px){
  .page-about .about-hero{
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
    align-items: start;
    gap: clamp(26px, 4vw, 52px);
  }
  .page-about .chronicle__item{
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 0 32px;
    padding-left: 22px;
  }
  .page-about .chronicle__year{
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding-top: 4px;
  }
  .page-about .chronicle__body h3{
    margin-top: 0;
  }
  .page-about .space-grid{
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: start;
  }
  .page-about .space-list{
    grid-column: 1 / -1;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }
  .page-about .team-grid{
    grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
    align-items: start;
  }
  .page-about .members-grid{
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
    align-items: start;
  }
}

@media (min-width: 960px){
  .page-about .steps{
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 0 20px;
  }
  .page-about .trust-grid{
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .about-cta{
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
  }
  .page-about .cta-actions{
    flex-wrap: nowrap;
  }
  .page-about .cta-actions .btn{
    min-width: 0;
    flex: 0 0 auto;
  }
  .page-about .events-panel{
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: 14px 28px;
  }
  .page-about .events-list{
    justify-content: flex-end;
  }
  .page-about .events-note{
    grid-column: 1 / -1;
  }
}

@media (prefers-reduced-motion: reduce){
  .page-about *{
    transition: none !important;
    animation: none !important;
  }
}
<<<END>>>