.page-about {
  --about-sticky: 28px;
  --about-accent-soft: rgba(217, 169, 76, 0.1);
  padding-bottom: clamp(48px, 7vw, 96px);
  color: var(--oax-cream);
}

.page-about .about-progress-track {
  position: relative;
  height: 2px;
  margin: 14px 0 0;
  border-radius: 2px;
  background: var(--oax-line);
  overflow: hidden;
}

.page-about .about-progress-track .oax-progress {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--oax-gold), var(--oax-gold-light));
  transition: width 140ms linear;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  display: grid;
  gap: 28px;
  padding: clamp(22px, 4vw, 44px) 0 clamp(30px, 5vw, 56px);
}

.page-about .about-hero__eyebrow {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.34em;
  color: var(--oax-gold);
}

.page-about .about-hero__title {
  margin: 14px 0 18px;
  font-family: var(--oax-font-head);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.12;
  font-size: clamp(1.9rem, 5.6vw, 3.4rem);
  color: var(--oax-cream);
}

.page-about .about-hero__lead {
  margin: 0;
  max-width: 36em;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--oax-mist);
}

.page-about .about-stats {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 18px;
}

.page-about .about-stats__item {
  padding-left: 12px;
  border-left: 1px solid var(--oax-line-strong);
}

.page-about .about-stats__num {
  display: block;
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--oax-gold-light);
}

.page-about .about-stats__label {
  display: block;
  margin-top: 4px;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--oax-mist);
}

.page-about .about-hero__figure {
  position: relative;
  margin: 0;
  border-radius: var(--oax-radius-lg);
  overflow: hidden;
  border: 1px solid var(--oax-line-strong);
  background:
    radial-gradient(120% 90% at 100% 0%, rgba(217, 169, 76, 0.22), transparent 62%),
    linear-gradient(165deg, var(--oax-midnight), var(--oax-ink));
}

.page-about .about-hero__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(0deg, rgba(159, 176, 192, 0.07) 0 1px, transparent 1px 26px),
    repeating-linear-gradient(90deg, rgba(159, 176, 192, 0.05) 0 1px, transparent 1px 26px);
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 9 / 11;
}

.page-about .about-hero__caption {
  position: absolute;
  left: 16px;
  bottom: 14px;
  font-size: 10px;
  letter-spacing: 0.28em;
  color: var(--oax-gold-light);
}

/* ---------- 布局 ---------- */
.page-about .about-layout {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
}

.page-about .about-index {
  border-top: 1px solid var(--oax-line);
  padding-top: 14px;
}

.page-about .about-index__title {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.34em;
  color: var(--oax-mist);
}

.page-about .about-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-about .about-index__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 12px;
  border-left: 2px solid transparent;
  border-radius: var(--oax-radius-sm);
  font-size: 0.86rem;
  color: var(--oax-mist);
  text-decoration: none;
  transition: color var(--oax-t-fast) var(--oax-ease), background var(--oax-t-fast) var(--oax-ease);
}

.page-about .about-index__idx {
  font-family: var(--oax-font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--oax-gold);
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  color: var(--oax-cream);
  background: var(--about-accent-soft);
}

.page-about .about-index__link.is-active {
  color: var(--oax-gold-light);
  border-left-color: var(--oax-gold);
  background: var(--about-accent-soft);
}

/* ---------- 章节 ---------- */
.page-about .about-chapter {
  display: grid;
  gap: 16px;
  padding: clamp(28px, 4.6vw, 54px) 0;
  border-top: 1px solid var(--oax-line);
}

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

.page-about .about-chapter__num {
  font-size: 0.95rem;
  letter-spacing: 0.1em;
  color: var(--oax-gold);
}

.page-about .about-chapter__en {
  font-family: var(--oax-font-mono);
  font-size: 10px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--oax-mist);
}

.page-about .about-chapter__title {
  margin: 0 0 14px;
  font-family: var(--oax-font-head);
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.25;
  font-size: clamp(1.35rem, 3.2vw, 1.85rem);
  color: var(--oax-cream);
}

.page-about .about-chapter__body p {
  margin: 0 0 14px;
  font-size: 0.98rem;
  line-height: 1.9;
  color: var(--oax-mist);
  max-width: 38em;
}

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

.page-about .about-chapter__lead {
  color: var(--oax-cream) !important;
  font-size: 1rem !important;
  padding-left: 14px;
  border-left: 2px solid var(--oax-gold);
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: 26px 0 0;
  padding: 0 0 0 26px;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 10px;
  bottom: 12px;
  width: 1px;
  background: linear-gradient(180deg, var(--oax-gold), rgba(217, 169, 76, 0.08));
}

.page-about .about-timeline__item {
  position: relative;
  padding-bottom: 26px;
}

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

.page-about .about-timeline__dot {
  position: absolute;
  left: -26px;
  top: 6px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  border: 1px solid var(--oax-gold);
  background: var(--oax-ink);
  box-shadow: 0 0 0 4px rgba(217, 169, 76, 0.08);
}

.page-about .about-timeline__item:nth-child(even) .about-timeline__dot {
  background: var(--oax-gold);
  box-shadow: 0 0 0 4px rgba(217, 169, 76, 0.16);
}

.page-about .about-timeline__year {
  margin: 0 0 4px;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--oax-gold-light);
}

.page-about .about-timeline__title {
  margin: 0 0 6px;
  font-family: var(--oax-font-head);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--oax-cream);
}

.page-about .about-timeline__text {
  margin: 0 !important;
  font-size: 0.92rem !important;
  line-height: 1.8 !important;
  color: var(--oax-mist);
  max-width: 34em;
}

/* ---------- 图片 ---------- */
.page-about .about-figure {
  margin: 30px 0 0;
  border-radius: var(--oax-radius);
  overflow: hidden;
  border: 1px solid var(--oax-line);
  background: linear-gradient(150deg, rgba(27, 58, 87, 0.7), rgba(4, 16, 27, 0.9));
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 10 / 7;
  opacity: 0.92;
}

.page-about .about-figure__caption {
  padding: 10px 14px;
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--oax-mist);
  border-top: 1px solid var(--oax-line);
}

/* ---------- 团队 ---------- */
.page-about .about-teams {
  margin-top: 24px;
  display: grid;
  gap: 14px;
}

.page-about .about-team {
  padding: 18px 18px 20px;
  border: 1px solid var(--oax-line-strong);
  border-radius: var(--oax-radius);
  background: var(--oax-glass);
  transition: border-color var(--oax-t-fast) var(--oax-ease), transform var(--oax-t-fast) var(--oax-ease);
}

.page-about .about-team:hover {
  border-color: rgba(242, 206, 132, 0.42);
  transform: translateY(-2px);
}

.page-about .about-team__num {
  margin: 0 0 8px;
  font-size: 10px;
  letter-spacing: 0.24em;
  color: var(--oax-jade);
}

.page-about .about-team h3 {
  margin: 0 0 8px;
  font-family: var(--oax-font-head);
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--oax-cream);
}

.page-about .about-team p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--oax-mist);
}

/* ---------- 方法 ---------- */
.page-about .about-methods {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-methods__item {
  position: relative;
  padding: 20px 18px;
  border-radius: var(--oax-radius);
  border: 1px solid var(--oax-line);
  background: linear-gradient(160deg, rgba(27, 58, 87, 0.55), rgba(10, 26, 43, 0.35));
}

.page-about .about-methods__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  width: 3px;
  height: 22px;
  background: var(--oax-gold);
  border-radius: 0 2px 2px 0;
}

.page-about .about-methods__num {
  display: block;
  margin-bottom: 8px;
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--oax-coral);
}

.page-about .about-methods__item h3 {
  margin: 0 0 8px;
  font-family: var(--oax-font-head);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--oax-cream);
}

.page-about .about-methods__item p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--oax-mist);
}

.page-about .about-methods__note {
  margin: 20px 0 0;
  padding: 12px 14px;
  border-left: 1px solid var(--oax-line-strong);
  font-size: 0.86rem;
  line-height: 1.8;
  color: var(--oax-mist);
}

/* ---------- 标准 ---------- */
.page-about .about-standard {
  margin-top: 24px;
  display: grid;
  gap: 18px;
}

.page-about .about-standard__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-about .about-standard__step {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--oax-line-strong);
  border-radius: var(--oax-radius-sm);
  background: rgba(16, 42, 68, 0.5);
  color: var(--oax-cream);
  font-family: var(--oax-font-body);
  font-size: 0.9rem;
  text-align: left;
  cursor: pointer;
  transition: border-color var(--oax-t-fast) var(--oax-ease), background var(--oax-t-fast) var(--oax-ease);
}

.page-about .about-standard__step:hover,
.page-about .about-standard__step:focus-visible {
  border-color: rgba(242, 206, 132, 0.5);
  background: rgba(217, 169, 76, 0.1);
}

.page-about .about-standard__idx {
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--oax-gold);
}

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

.page-about .about-standard__panel {
  padding: 16px 18px;
  border-left: 2px solid var(--oax-coral);
  border-radius: 0 var(--oax-radius-sm) var(--oax-radius-sm) 0;
  background: rgba(4, 16, 27, 0.45);
}

.page-about .about-standard__panel h3 {
  margin: 0 0 8px;
  font-family: var(--oax-font-head);
  font-size: 1rem;
  font-weight: 700;
  color: var(--oax-gold-light);
  line-height: 1.4;
}

.page-about .about-standard__panel p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--oax-mist);
}

.page-about .about-quote {
  margin: 32px 0 0;
  padding: clamp(20px, 3.4vw, 34px);
  border-radius: var(--oax-radius);
  background: linear-gradient(115deg, var(--oax-deep), var(--oax-midnight));
  border: 1px solid var(--oax-line);
  font-family: var(--oax-font-head);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.5;
  font-size: clamp(1.1rem, 2.6vw, 1.5rem);
  color: var(--oax-cream);
}

/* ---------- 伙伴 ---------- */
.page-about .about-partners {
  list-style: none;
  margin: 22px 0 20px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-partners__item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  border: 1px solid var(--oax-line);
  border-radius: var(--oax-radius-sm);
  font-size: 0.9rem;
  color: var(--oax-cream);
  background: rgba(27, 58, 87, 0.32);
}

.page-about .about-partners__item .oax-dot {
  flex: 0 0 auto;
}

.page-about .about-chapter__body a {
  color: var(--oax-gold-light);
  text-decoration: none;
  border-bottom: 1px solid rgba(242, 206, 132, 0.35);
  transition: color var(--oax-t-fast) var(--oax-ease), border-color var(--oax-t-fast) var(--oax-ease);
}

.page-about .about-chapter__body a:hover,
.page-about .about-chapter__body a:focus-visible {
  color: var(--oax-cream);
  border-bottom-color: var(--oax-gold);
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  margin-top: clamp(32px, 5vw, 56px);
  padding: clamp(22px, 4vw, 40px);
  border-radius: var(--oax-radius-lg);
  border: 1px solid var(--oax-glass-edge);
  background:
    radial-gradient(100% 120% at 0% 0%, rgba(111, 182, 158, 0.14), transparent 58%),
    linear-gradient(150deg, var(--oax-midnight), var(--oax-ink));
}

.page-about .about-cta__eyebrow {
  margin: 0 0 10px;
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--oax-jade);
}

.page-about .about-cta__title {
  margin: 0 0 12px;
  font-family: var(--oax-font-head);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.3;
  font-size: clamp(1.25rem, 3vw, 1.7rem);
  color: var(--oax-cream);
}

.page-about .about-cta__text {
  margin: 0 0 20px;
  max-width: 34em;
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--oax-mist);
}

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

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

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

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

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

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

@media (min-width: 960px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: clamp(32px, 4vw, 56px);
    align-items: end;
  }

  .page-about .about-hero__figure {
    margin-top: -18px;
  }

  .page-about .about-chapter {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 30px;
  }

  .page-about .about-chapter__rail {
    flex-direction: column-reverse;
    align-items: flex-start;
    gap: 14px;
    position: sticky;
    top: var(--about-sticky);
    align-self: start;
  }

  .page-about .about-chapter__en {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    letter-spacing: 0.34em;
  }

  .page-about .about-methods {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    padding-bottom: 44px;
  }

  .page-about .about-methods__item:nth-child(1) {
    transform: translateY(0);
  }

  .page-about .about-methods__item:nth-child(2) {
    transform: translateY(26px);
  }

  .page-about .about-methods__item:nth-child(3) {
    transform: translateY(12px);
  }

  .page-about .about-methods__item:nth-child(4) {
    transform: translateY(38px);
  }

  .page-about .about-standard {
    grid-template-columns: minmax(0, 0.75fr) minmax(0, 1.25fr);
    gap: 24px;
    align-items: start;
  }

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

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

@media (min-width: 1080px) {
  .page-about .about-layout {
    grid-template-columns: minmax(0, 1fr) 196px;
    gap: clamp(30px, 4vw, 52px);
    align-items: start;
  }

  .page-about .about-index {
    grid-column: 2;
    grid-row: 1;
    position: sticky;
    top: var(--about-sticky);
    border-top: none;
    border-left: 1px solid var(--oax-line);
    padding-top: 0;
    padding-left: 14px;
    margin-top: 6px;
  }

  .page-about .about-index__list {
    flex-direction: column;
    gap: 2px;
  }

  .page-about .about-index__link {
    width: 100%;
  }

  .page-about .about-main {
    grid-column: 1;
    grid-row: 1;
    min-width: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-team:hover {
    transform: none;
  }

  .page-about .about-methods__item {
    transform: none !important;
  }

  .page-about .about-progress-track .oax-progress {
    transition: none;
  }
}
<<<END>>>