.page-about {
  --about-hero-pad-top: calc(var(--yl-header-h) + 28px);
  --about-rule: rgba(23, 32, 28, 0.12);
  --about-rule-light: rgba(250, 246, 238, 0.18);
  --about-text-soft: #55635C;
  background: var(--yl-cream);
  color: var(--yl-ink);
  font-family: var(--yl-font-body);
  overflow-x: hidden;
}

.page-about .about-num {
  font-family: var(--yl-font-mono);
  font-variant-numeric: tabular-nums;
}

.page-about .about-h2 {
  font-family: var(--yl-font-display);
  font-weight: 900;
  font-size: clamp(1.6rem, 5.2vw, 2.9rem);
  line-height: 1.22;
  letter-spacing: -0.01em;
  margin: 0 0 18px;
}

.page-about .about-inline-link {
  color: var(--yl-green);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid var(--yl-gold);
  padding-bottom: 1px;
}

.page-about .about-inline-link:hover,
.page-about .about-inline-link:focus-visible {
  color: var(--yl-wine);
  border-bottom-color: var(--yl-wine);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: var(--about-hero-pad-top) 0 clamp(36px, 7vw, 72px);
  background:
    radial-gradient(circle at 86% 8%, rgba(232, 163, 61, 0.22), transparent 46%),
    radial-gradient(circle at 6% 92%, rgba(255, 107, 90, 0.14), transparent 42%),
    linear-gradient(158deg, var(--yl-green-deep) 0%, var(--yl-green) 56%, var(--yl-green-soft) 100%);
  color: var(--yl-cream);
  border-bottom-left-radius: 40px;
  border-bottom-right-radius: 40px;
  overflow: hidden;
}

.page-about .about-hero__crumbs .breadcrumbs__link {
  color: rgba(250, 246, 238, 0.68);
}

.page-about .about-hero__crumbs .breadcrumbs__link[aria-current="page"] {
  color: var(--yl-amber);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 5vw, 48px);
  align-items: center;
  margin-top: clamp(20px, 4vw, 34px);
}

.page-about .about-hero__eyebrow {
  color: var(--yl-gold-soft);
}

.page-about .about-hero__title {
  font-family: var(--yl-font-display);
  font-weight: 900;
  font-size: clamp(2.2rem, 8vw, 4.2rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
  color: var(--yl-cream);
}

.page-about .about-hero__lede {
  max-width: 34em;
  font-size: clamp(0.98rem, 2.6vw, 1.08rem);
  line-height: 1.75;
  color: rgba(250, 246, 238, 0.82);
  margin: 0 0 26px;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-hero__visual {
  max-width: 420px;
  width: 100%;
  justify-self: center;
}

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

.page-about .about-hero__stats {
  list-style: none;
  margin: clamp(30px, 6vw, 52px) 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--about-rule-light);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 16px;
}

.page-about .about-hero__stats li {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .about-hero__stats .about-num {
  font-size: clamp(1.5rem, 5vw, 2rem);
  color: var(--yl-gold);
  letter-spacing: -0.02em;
}

.page-about .about-stat-label {
  font-size: 0.82rem;
  color: rgba(250, 246, 238, 0.66);
}

/* ---------- 叙事 ---------- */
.page-about .about-narrative {
  padding: clamp(48px, 9vw, 104px) 0 clamp(36px, 6vw, 64px);
}

.page-about .about-narrative__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 4vw, 40px);
}

.page-about .about-narrative__lead .eyebrow {
  color: var(--yl-wine);
}

.page-about .about-narrative__body p {
  margin: 0 0 18px;
  line-height: 1.8;
  font-size: clamp(0.96rem, 2.5vw, 1.02rem);
  color: var(--yl-ink);
}

.page-about .about-quote {
  margin: clamp(30px, 5vw, 54px) 0 0;
  padding: clamp(24px, 4vw, 40px);
  border-radius: var(--yl-radius-lg);
  background: linear-gradient(135deg, var(--yl-wine), #5E222C);
  color: var(--yl-cream);
  box-shadow: var(--yl-shadow-soft);
}

.page-about .about-quote p {
  font-family: var(--yl-font-display);
  font-weight: 700;
  font-size: clamp(1.15rem, 3.2vw, 1.6rem);
  line-height: 1.5;
  margin: 0 0 14px;
}

.page-about .about-quote cite {
  font-style: normal;
  font-family: var(--yl-font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--yl-amber);
}

/* ---------- 原则 ---------- */
.page-about .about-principles {
  padding: clamp(40px, 8vw, 92px) 0;
  background: var(--yl-sand);
  border-radius: 36px;
  margin: 0 clamp(0px, 1vw, 12px);
}

.page-about .about-principles__head .eyebrow {
  color: var(--yl-indigo);
}

.page-about .about-principles__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: clamp(24px, 4vw, 40px);
}

.page-about .about-principle {
  position: relative;
  background: var(--yl-cream);
  border-radius: var(--yl-radius-md);
  padding: clamp(22px, 4vw, 30px);
  border: 1px solid var(--about-rule);
  box-shadow: var(--yl-shadow-soft);
  overflow: hidden;
}

.page-about .about-principle::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 5px;
  background: var(--yl-gold);
}

.page-about .about-principle--clarity::after {
  background: var(--yl-indigo);
}

.page-about .about-principle--keep::after {
  background: var(--yl-coral);
}

.page-about .about-principle__index {
  font-family: var(--yl-font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--yl-sage);
}

.page-about .about-principle__title {
  font-family: var(--yl-font-display);
  font-size: clamp(1.5rem, 4vw, 1.9rem);
  font-weight: 900;
  margin: 6px 0 10px;
  color: var(--yl-green);
}

.page-about .about-principle__text {
  margin: 0 0 14px;
  line-height: 1.75;
  font-size: 0.96rem;
  color: var(--about-text-soft);
}

.page-about .about-principle__more {
  border-top: 1px dashed var(--about-rule);
  padding-top: 12px;
}

.page-about .about-principle__more summary {
  cursor: pointer;
  list-style: none;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--yl-green);
  display: flex;
  align-items: center;
  gap: 8px;
}

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

.page-about .about-principle__more summary::before {
  content: "+";
  font-family: var(--yl-font-mono);
  font-size: 1rem;
  color: var(--yl-coral);
  transition: transform 0.25s var(--yl-ease);
}

.page-about .about-principle__more[open] summary::before {
  transform: rotate(45deg);
}

.page-about .about-principle__more p {
  margin: 10px 0 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--about-text-soft);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  padding: clamp(46px, 9vw, 104px) 0;
}

.page-about .about-timeline__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 5vw, 52px);
}

.page-about .about-timeline__main .eyebrow {
  color: var(--yl-wine);
}

.page-about .about-tl {
  list-style: none;
  margin: clamp(22px, 4vw, 34px) 0 0;
  padding: 0 0 0 28px;
  position: relative;
}

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--yl-gold), rgba(232, 163, 61, 0.18));
}

.page-about .about-tl__item {
  position: relative;
  padding-bottom: clamp(24px, 4vw, 34px);
}

.page-about .about-tl__item:last-child {
  padding-bottom: 0;
}

.page-about .about-tl__item::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--yl-gold);
  border: 3px solid var(--yl-cream);
  box-shadow: 0 0 0 2px rgba(232, 163, 61, 0.35);
}

.page-about .about-tl__item--current::before {
  background: var(--yl-coral);
  box-shadow: 0 0 0 4px rgba(255, 107, 90, 0.22);
}

.page-about .about-tl__year {
  display: inline-block;
  font-family: var(--yl-font-mono);
  font-size: clamp(1.15rem, 3.6vw, 1.5rem);
  font-variant-numeric: tabular-nums;
  color: var(--yl-green);
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}

.page-about .about-tl__item--current .about-tl__year {
  color: var(--yl-wine);
}

.page-about .about-tl__title {
  font-family: var(--yl-font-body);
  font-weight: 700;
  font-size: 1.06rem;
  margin: 0 0 8px;
  color: var(--yl-ink);
}

.page-about .about-tl__text {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--about-text-soft);
  max-width: 32em;
}

.page-about .about-timeline__aside {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-about .about-timeline__figure {
  border-radius: var(--yl-radius-lg);
}

.page-about .about-timeline__note p {
  margin: 0 0 10px;
  line-height: 1.75;
  font-size: 0.92rem;
}

/* ---------- 场景 ---------- */
.page-about .about-scenes {
  padding: clamp(40px, 8vw, 90px) 0;
  background: linear-gradient(180deg, var(--yl-cream), var(--yl-sand));
}

.page-about .about-scenes__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 5vw, 48px);
  align-items: start;
}

.page-about .about-scenes__figure {
  border-radius: var(--yl-radius-lg);
}

.page-about .about-scenes__body .eyebrow {
  color: var(--yl-indigo);
}

.page-about .about-scenes__lede {
  margin: 0 0 clamp(20px, 4vw, 30px);
  line-height: 1.75;
  color: var(--about-text-soft);
  max-width: 34em;
}

.page-about .about-scenes__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-about .about-scene {
  position: relative;
  padding: 18px 20px 18px 22px;
  background: rgba(250, 246, 238, 0.86);
  border: 1px solid var(--about-rule);
  border-radius: var(--yl-radius-md);
  transition: transform 0.28s var(--yl-ease), box-shadow 0.28s var(--yl-ease);
}

.page-about .about-scene:hover {
  transform: translateY(-3px);
  box-shadow: var(--yl-shadow-lift);
}

.page-about .about-scene__tag {
  display: inline-block;
  font-family: var(--yl-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--yl-green);
  background: var(--yl-amber);
  border-radius: var(--yl-radius-pill);
  padding: 3px 10px;
  margin-bottom: 8px;
}

.page-about .about-scene__title {
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 6px;
  color: var(--yl-ink);
}

.page-about .about-scene p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--about-text-soft);
}

.page-about .about-scenes__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 4vw, 28px);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding: clamp(46px, 9vw, 100px) 0;
}

.page-about .about-team__head .eyebrow {
  color: var(--yl-wine);
}

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 5vw, 46px);
  margin-top: clamp(24px, 4vw, 40px);
}

.page-about .about-team__figure {
  border-radius: var(--yl-radius-lg);
}

.page-about .about-team__mechanics {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-about .about-mechanic {
  padding: 18px 0 18px 20px;
  border-left: 3px solid var(--yl-indigo);
}

.page-about .about-mechanic__title {
  font-family: var(--yl-font-body);
  font-weight: 700;
  font-size: 1.02rem;
  margin: 0 0 6px;
  color: var(--yl-green);
}

.page-about .about-mechanic p {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.75;
  color: var(--about-text-soft);
}

.page-about .about-team__note {
  margin-top: 6px;
}

/* ---------- 气质 ---------- */
.page-about .about-identity {
  padding: clamp(44px, 8vw, 92px) 0;
  background: var(--yl-indigo);
  color: var(--yl-cream);
}

.page-about .about-identity__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 5vw, 52px);
  align-items: start;
}

.page-about .about-identity__eyebrow {
  color: var(--yl-gold-soft);
}

.page-about .about-identity__title {
  color: var(--yl-cream);
}

.page-about .about-identity__copy p {
  margin: 0 0 16px;
  line-height: 1.8;
  font-size: clamp(0.94rem, 2.5vw, 1rem);
  color: rgba(250, 246, 238, 0.82);
  max-width: 34em;
}

.page-about .about-identity__swatches {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-about .about-swatch {
  border-radius: var(--yl-radius-sm);
  padding: 14px 14px 16px;
  background: rgba(250, 246, 238, 0.08);
  border: 1px solid rgba(250, 246, 238, 0.16);
  display: flex;
  flex-direction: column;
  gap: 4px;
  position: relative;
  padding-top: 34px;
}

.page-about .about-swatch::before {
  content: "";
  position: absolute;
  top: 12px;
  left: 14px;
  width: 26px;
  height: 8px;
  border-radius: 4px;
  background: var(--yl-cream);
}

.page-about .about-swatch--green::before { background: var(--yl-green-soft); }
.page-about .about-swatch--gold::before { background: var(--yl-gold); }
.page-about .about-swatch--coral::before { background: var(--yl-coral); }
.page-about .about-swatch--wine::before { background: var(--yl-wine); }
.page-about .about-swatch--indigo::before { background: var(--yl-amber); }

.page-about .about-swatch__name {
  font-family: var(--yl-font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--yl-cream);
}

.page-about .about-swatch__use {
  font-size: 0.76rem;
  line-height: 1.5;
  color: rgba(250, 246, 238, 0.62);
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  padding: clamp(44px, 8vw, 88px) 0 clamp(56px, 9vw, 104px);
}

.page-about .about-cta__panel {
  border-radius: var(--yl-radius-lg);
  padding: clamp(26px, 5vw, 48px);
  background:
    radial-gradient(circle at 88% 18%, rgba(232, 163, 61, 0.2), transparent 52%),
    linear-gradient(140deg, var(--yl-green), var(--yl-green-deep));
  color: var(--yl-cream);
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  align-items: center;
  box-shadow: var(--yl-shadow-lift);
}

.page-about .about-cta__title {
  font-family: var(--yl-font-display);
  font-weight: 900;
  font-size: clamp(1.4rem, 4.4vw, 2.1rem);
  line-height: 1.3;
  margin: 0 0 12px;
}

.page-about .about-cta__text p {
  margin: 0;
  line-height: 1.75;
  color: rgba(250, 246, 238, 0.78);
  max-width: 36em;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

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

@media (min-width: 900px) {
  .page-about .about-hero {
    border-bottom-left-radius: 56px;
    border-bottom-right-radius: 56px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: clamp(32px, 5vw, 72px);
  }

  .page-about .about-hero__visual {
    justify-self: end;
    max-width: 440px;
  }

  .page-about .about-narrative__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(32px, 5vw, 72px);
    align-items: start;
  }

  .page-about .about-quote {
    margin-left: 38%;
  }

  .page-about .about-timeline__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(36px, 5vw, 72px);
  }

  .page-about .about-timeline__aside {
    position: sticky;
    top: calc(var(--yl-header-h-scrolled) + 20px);
  }

  .page-about .about-scenes__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(32px, 5vw, 64px);
    align-items: center;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(32px, 5vw, 64px);
    align-items: start;
  }

  .page-about .about-identity__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(32px, 5vw, 64px);
  }

  .page-about .about-cta__panel {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 32px;
  }

  .page-about .about-cta__actions {
    justify-content: flex-end;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-scene {
    transition: none;
  }

  .page-about .about-scene:hover {
    transform: none;
  }
}
<<<END>>>