.page-about {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-about .about-lead {
  position: relative;
  padding: clamp(18px, 3vw, 30px) 0 clamp(34px, 5vw, 64px);
  background:
    radial-gradient(88% 72% at 92% -6%, rgba(30, 58, 68, 0.16), transparent 62%),
    radial-gradient(58% 52% at 2% 102%, rgba(176, 138, 82, 0.18), transparent 72%),
    var(--paper);
  border-bottom: 1px solid var(--line);
}

.page-about .about-lead .breadcrumb {
  margin: 0 0 clamp(16px, 3vw, 28px);
}

.page-about .lead-grid {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
}

.page-about .lead-main .eyebrow {
  margin: 0 0 10px;
}

.page-about .about-lead__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.3rem, 8.6vw, 5.4rem);
  line-height: 1.02;
  letter-spacing: -0.015em;
}

.page-about .about-lead__mark {
  position: relative;
  isolation: isolate;
  color: var(--dai);
  white-space: nowrap;
}

.page-about .about-lead__mark::after {
  content: "";
  position: absolute;
  left: -3%;
  right: -3%;
  bottom: 0.06em;
  height: 0.3em;
  z-index: -1;
  background: linear-gradient(90deg, rgba(61, 240, 192, 0.75), rgba(255, 91, 46, 0.5));
}

.page-about .about-lead__lede {
  max-width: 56ch;
  margin: clamp(16px, 2.6vw, 24px) 0 0;
  font-size: clamp(1rem, 2.1vw, 1.12rem);
  line-height: 1.85;
  color: var(--muted);
}

.page-about .lead-actions {
  margin-top: clamp(18px, 3vw, 28px);
}

.page-about .lead-facts {
  display: grid;
  gap: 0;
  border-top: 2px solid var(--ink);
  padding-top: 6px;
}

.page-about .lead-fact {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--line);
}

.page-about .lead-fact__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.5rem, 4.4vw, 2.1rem);
  line-height: 1;
  color: var(--dai);
  letter-spacing: -0.02em;
}

.page-about .lead-fact__unit {
  font-size: 0.55em;
  margin-left: 2px;
}

.page-about .lead-fact__label {
  flex: 1 1 140px;
  font-size: 0.82rem;
  line-height: 1.55;
  color: var(--muted);
}

.page-about .lead-index {
  display: grid;
  gap: 0;
  margin-top: clamp(26px, 4vw, 44px);
  border-top: 1px solid var(--line);
}

.page-about .lead-index a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 2px;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  text-decoration: none;
  font-size: 0.94rem;
  transition: color 0.25s var(--ease), padding-left 0.25s var(--ease);
}

.page-about .lead-index a:hover,
.page-about .lead-index a:focus-visible {
  color: var(--rust);
  padding-left: 8px;
}

.page-about .lead-index__num {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--copper);
  letter-spacing: 0.08em;
}

/* ---------- 章节骨架 ---------- */
.page-about .chapter {
  padding: clamp(34px, 6vw, 78px) 0;
  border-top: 1px dashed rgba(30, 58, 68, 0.3);
}

.page-about .chapter__inner {
  display: grid;
  gap: 16px;
}

.page-about .chapter__rail {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-about .chapter__year {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.3rem, 3.6vw, 1.8rem);
  line-height: 1;
  color: var(--dai);
  letter-spacing: -0.03em;
}

.page-about .chapter__kicker {
  font-size: 0.7rem;
  letter-spacing: 0.24em;
  color: var(--smoke);
}

.page-about .chapter__title {
  margin: 0 0 clamp(14px, 2.4vw, 22px);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.65rem, 4.4vw, 2.85rem);
  line-height: 1.18;
  letter-spacing: -0.01em;
}

.page-about .chapter__body p {
  max-width: 62ch;
  margin: 0 0 14px;
  font-size: clamp(0.98rem, 2vw, 1.05rem);
  line-height: 1.85;
}

.page-about .chapter__intro {
  margin-bottom: clamp(16px, 2.6vw, 24px) !important;
  color: var(--muted);
}

/* ---------- 图文错位 ---------- */
.page-about .split {
  display: grid;
  gap: clamp(22px, 3.5vw, 36px);
}

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

.page-about .media-frame {
  margin: 0;
  background: var(--mist);
  border: 1px solid var(--line-dai);
}

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

.page-about .media-frame--cut img {
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 36px), calc(100% - 36px) 100%, 0 100%);
}

.page-about .media-frame__caption {
  margin-top: 10px;
  padding: 9px 12px 10px;
  border-top: 1px solid var(--line);
  font-size: 0.76rem;
  line-height: 1.6;
  color: var(--muted);
}

.page-about .pull-quote {
  margin: clamp(18px, 3vw, 28px) 0 0;
  padding: 4px 0 4px 18px;
  border-left: 4px solid var(--flame);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.1rem, 2.7vw, 1.55rem);
  line-height: 1.5;
  color: var(--dai);
}

/* ---------- 版本时间轴 ---------- */
.page-about .version-list {
  list-style: none;
  margin: clamp(16px, 3vw, 24px) 0 0;
  padding: 0 0 0 26px;
  border-left: 2px solid var(--line-dai);
}

.page-about .version-item {
  position: relative;
  margin-bottom: 12px;
  padding: 14px 16px 16px;
  background: rgba(203, 217, 215, 0.3);
  border: 1px solid transparent;
  transition: transform 0.35s var(--ease), background 0.35s var(--ease), border-color 0.35s var(--ease);
}

.page-about .version-item::before {
  content: "";
  position: absolute;
  left: -35px;
  top: 20px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--dai);
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-about .version-item:hover,
.page-about .version-item:focus-within,
.page-about .version-item:focus {
  transform: translateX(6px);
  background: var(--paper);
  border-color: var(--line-dai);
}

.page-about .version-item:hover::before,
.page-about .version-item:focus-within::before,
.page-about .version-item:focus::before {
  background: var(--flame);
  border-color: var(--flame);
}

.page-about .version-item__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 10px;
  margin-bottom: 6px;
}

.page-about .version-item__tag {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--flame);
  letter-spacing: 0.06em;
}

.page-about .version-item__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.1rem;
}

.page-about .version-item__desc {
  max-width: 56ch;
  margin: 0 0 8px !important;
  font-size: 0.94rem !important;
  line-height: 1.75 !important;
}

.page-about .version-item__note {
  margin: 0 !important;
  padding-top: 8px;
  border-top: 1px dashed var(--line);
  font-size: 0.8rem !important;
  line-height: 1.6 !important;
  color: var(--muted);
}

/* ---------- 视觉与色彩 ---------- */
.page-about .arch-deco {
  display: block;
  width: clamp(74px, 15vw, 118px);
  height: auto;
  margin-bottom: 12px;
  color: var(--copper);
}

.page-about .swatches {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  margin-top: clamp(20px, 3.4vw, 30px);
}

.page-about .swatch {
  background: var(--paper);
  border: 1px solid var(--line);
}

.page-about .swatch__chip {
  height: 56px;
}

.page-about .swatch__body {
  padding: 9px 11px 11px;
}

.page-about .swatch__name {
  display: block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 0.94rem;
}

.page-about .swatch__hex {
  display: block;
  margin-top: 2px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted);
}

.page-about .swatch__use {
  display: block;
  margin-top: 6px;
  font-size: 0.75rem;
  line-height: 1.55;
  color: var(--muted);
}

.page-about .swatch--dai .swatch__chip { background: var(--dai); }
.page-about .swatch--ink .swatch__chip { background: var(--ink); }
.page-about .swatch--mint .swatch__chip { background: var(--mint); }
.page-about .swatch--flame .swatch__chip { background: var(--flame); }
.page-about .swatch--copper .swatch__chip { background: var(--copper); }

/* ---------- 团队 ---------- */
.page-about .team-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
  margin: clamp(16px, 3vw, 26px) 0 0;
}

.page-about .team-card {
  padding: 16px 16px 18px;
  background: rgba(245, 239, 228, 0.7);
  border-top: 3px solid var(--dai);
}

.page-about .team-card:nth-child(even) {
  border-top-color: var(--flame);
}

.page-about .team-card__num {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--copper);
  letter-spacing: 0.1em;
}

.page-about .team-card__title {
  margin: 6px 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.06rem;
  line-height: 1.3;
}

.page-about .team-card__desc {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .team-figure {
  margin-top: clamp(20px, 3.4vw, 32px);
}

/* ---------- 覆盖数据 ---------- */
.page-about .fact-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(18px, 3vw, 28px) 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .fact {
  background: var(--paper);
  padding: 15px 13px 16px;
}

.page-about .fact__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.55rem, 4.2vw, 2.2rem);
  line-height: 1;
  color: var(--dai);
  letter-spacing: -0.03em;
}

.page-about .fact__unit {
  font-size: 0.55em;
  margin-left: 2px;
}

.page-about .fact__label {
  display: block;
  margin-top: 9px;
  font-size: 0.8rem;
  line-height: 1.5;
  color: var(--muted);
}

/* ---------- 深色面板 ---------- */
.page-about .panel-dai {
  background: var(--dai);
  color: var(--paper);
  padding: clamp(20px, 4vw, 38px);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), calc(100% - 28px) 100%, 0 100%);
}

.page-about .panel-dai__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.2rem, 3vw, 1.7rem);
  line-height: 1.3;
  color: var(--mint);
}

.page-about .panel-dai__text {
  margin: 0 0 14px;
  max-width: 60ch;
  font-size: clamp(0.95rem, 1.9vw, 1.02rem);
  line-height: 1.85;
  color: var(--mist);
}

.page-about .tag-set {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
}

.page-about .tag {
  padding: 4px 12px;
  border: 1px solid rgba(245, 239, 228, 0.35);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--paper);
}

.page-about .panel-dai__link {
  display: inline-block;
  margin-top: 2px;
  color: var(--mint);
}

/* ---------- 结尾行动区 ---------- */
.page-about .about-cta-wrap {
  padding: 0 0 clamp(36px, 6vw, 72px);
}

.page-about .about-cta {
  padding: clamp(22px, 4vw, 44px);
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(61, 240, 192, 0.18), transparent 58%),
    linear-gradient(118deg, var(--dai) 0%, #17323b 55%, var(--brown) 100%);
  color: var(--paper);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), calc(100% - 30px) 100%, 0 100%);
}

.page-about .about-cta__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.4rem, 3.6vw, 2.2rem);
  line-height: 1.2;
}

.page-about .about-cta__text {
  max-width: 58ch;
  margin: 0;
  font-size: clamp(0.94rem, 1.9vw, 1.02rem);
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(16px, 2.8vw, 24px);
}

.page-about .about-cta .btn--ghost {
  border-color: rgba(245, 239, 228, 0.5);
  color: var(--paper);
}

.page-about .about-cta .btn--ghost:hover,
.page-about .about-cta .btn--ghost:focus-visible {
  border-color: var(--mint);
  color: var(--mint);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .lead-index {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 28px;
  }

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

  .page-about .fact-row {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 880px) {
  .page-about .chapter__inner {
    grid-template-columns: 152px minmax(0, 1fr);
    gap: clamp(24px, 4vw, 58px);
    align-items: start;
  }

  .page-about .chapter__rail {
    display: block;
    position: sticky;
    top: 108px;
    align-self: start;
    padding-top: 6px;
  }

  .page-about .chapter__kicker {
    display: block;
    margin-top: 8px;
  }

  .page-about .split {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: start;
  }

  .page-about .split--reverse {
    grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
  }

  .page-about .split--reverse .split__text {
    order: 2;
  }

  .page-about .split__offset {
    margin-top: clamp(26px, 5vw, 58px);
  }

  .page-about .lead-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
    gap: clamp(28px, 4vw, 56px);
  }

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

  .page-about .swatch__chip {
    height: 68px;
  }
}

@media (min-width: 1080px) {
  .page-about .team-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .version-item,
  .page-about .version-item::before,
  .page-about .lead-index a {
    transition: none;
  }

  .page-about .version-item:hover,
  .page-about .version-item:focus,
  .page-about .version-item:focus-within {
    transform: none;
  }

  .page-about .lead-index a:hover {
    padding-left: 2px;
  }
}
<<<END>>>