.page-about {
  --about-hairline: rgba(91, 108, 127, 0.35);
  --about-goldline: rgba(212, 160, 23, 0.55);
  background: var(--wc-paper);
  color: var(--wc-ink);
  overflow-x: hidden;
}

/* ---------- 封面 ---------- */
.page-about .about-cover {
  position: relative;
  border-bottom: 1px solid var(--wc-ink);
  padding: 28px 0 44px;
  isolation: isolate;
}

.page-about .about-cover::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, rgba(17, 17, 17, 0.045) 0 1px, transparent 1px 26px),
    repeating-linear-gradient(90deg, rgba(17, 17, 17, 0.045) 0 1px, transparent 1px 26px);
  pointer-events: none;
  z-index: -1;
}

.page-about .about-cover__inner {
  position: relative;
}

.page-about .about-cover__kicker {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 20px 0 0;
  font-size: var(--wc-fs-num);
  letter-spacing: 0.14em;
  color: var(--wc-slate);
}

.page-about .about-cover__ver {
  display: inline-block;
  background: var(--wc-ink);
  color: var(--wc-gold);
  padding: 4px 10px;
  font-size: var(--wc-fs-num);
  letter-spacing: 0.12em;
}

.page-about .about-cover__kicker-txt {
  border-left: 1px solid var(--about-hairline);
  padding-left: 10px;
}

.page-about .about-cover__title {
  font-family: var(--wc-font-serif);
  font-weight: 900;
  font-size: var(--wc-fs-cover);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 26px 0 22px;
  padding-left: 20px;
  border-left: 6px solid var(--wc-gold);
  max-width: 16em;
}

.page-about .about-cover__lede {
  font-size: var(--wc-fs-body);
  line-height: 1.65;
  color: var(--wc-charcoal);
  max-width: 60ch;
  margin: 0 0 34px;
}

.page-about .about-cover__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--wc-ink);
}

.page-about .about-cover__fact {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--about-hairline);
}

.page-about .about-cover__fact-num {
  font-size: 26px;
  font-weight: 700;
  color: var(--wc-ink);
  letter-spacing: 0.04em;
  min-width: 3.6em;
}

.page-about .about-cover__fact-txt {
  font-size: var(--wc-fs-note);
  color: var(--wc-slate);
  line-height: 1.5;
}

/* ---------- 长卷骨架 ---------- */
.page-about .about-ledger__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
}

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

.page-about .about-rail {
  display: none;
}

/* ---------- 章节 ---------- */
.page-about .about-chapter {
  padding: 44px 0 40px;
  border-bottom: 1px solid var(--about-hairline);
  scroll-margin-top: 96px;
}

.page-about .about-chapter:last-of-type {
  border-bottom: 1px solid var(--wc-ink);
}

/* ---------- 四组人 ---------- */
.page-about .about-roles {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--wc-ink);
  border: 1px solid var(--wc-ink);
  margin-bottom: 28px;
}

.page-about .about-role {
  background: var(--wc-paper);
  padding: 22px 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: background-color 0.18s var(--wc-ease);
}

.page-about .about-role:focus-visible {
  outline: 2px solid var(--wc-gold);
  outline-offset: -2px;
}

.page-about .about-role__idx {
  font-size: var(--wc-fs-num);
  letter-spacing: 0.14em;
  color: var(--wc-gold-dark);
  margin: 0;
}

.page-about .about-role__name {
  font-family: var(--wc-font-serif);
  font-weight: 700;
  font-size: var(--wc-fs-sub);
  line-height: 1.3;
  margin: 0;
}

.page-about .about-role__size {
  font-size: var(--wc-fs-num);
  letter-spacing: 0.1em;
  color: var(--wc-slate);
  border-top: 1px solid var(--about-hairline);
  padding-top: 6px;
  margin: 2px 0 4px;
}

.page-about .about-role__lead {
  margin: 0;
  font-size: var(--wc-fs-note);
  line-height: 1.6;
  color: var(--wc-charcoal);
}

.page-about .about-role__more {
  overflow: hidden;
  max-height: 320px;
  transition: max-height 0.2s var(--wc-ease), opacity 0.2s var(--wc-ease);
  opacity: 1;
}

.page-about .about-role__list {
  list-style: none;
  margin: 12px 0 0;
  padding: 12px 0 0;
  border-top: 1px solid var(--about-goldline);
  display: grid;
  gap: 8px;
}

.page-about .about-role__list li {
  position: relative;
  padding-left: 16px;
  font-size: var(--wc-fs-note);
  line-height: 1.55;
  color: var(--wc-slate);
}

.page-about .about-role__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 6px;
  background: var(--wc-gold);
}

/* ---------- 配图 ---------- */
.page-about .about-figure {
  margin: 0;
  border: 1px solid var(--wc-ink);
  background: var(--wc-sand);
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-bottom: 1px solid var(--wc-ink);
}

.page-about .about-figure figcaption {
  padding: 12px 16px;
  font-size: var(--wc-fs-num);
  line-height: 1.6;
  color: var(--wc-slate);
  background: var(--wc-paper);
}

/* ---------- 流程图 ---------- */
.page-about .about-tree {
  margin: 0 0 24px;
  border: 1px solid var(--wc-ink);
  background: var(--wc-paper);
}

.page-about .about-tree__scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-tree__svg {
  display: block;
  width: 100%;
  min-width: 680px;
  height: auto;
}

.page-about .about-flow__notes {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--wc-ink);
}

.page-about .about-flow__note {
  margin: 0;
  padding: 16px 0;
  font-size: var(--wc-fs-note);
  line-height: 1.65;
  color: var(--wc-charcoal);
  border-bottom: 1px solid var(--about-hairline);
}

.page-about .about-flow__note strong {
  display: block;
  font-size: var(--wc-fs-body);
  color: var(--wc-ink);
  margin-bottom: 6px;
}

.page-about .about-flow__note a {
  color: var(--wc-gold-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-about .about-flow__note a:hover,
.page-about .about-flow__note a:focus-visible {
  color: var(--wc-ink);
  background: var(--wc-gold-light);
}

/* ---------- 年表 ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 0 20px;
  padding-bottom: 30px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  bottom: 0;
  width: 1px;
  background: var(--about-hairline);
}

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

.page-about .about-timeline__item:last-child::before {
  display: none;
}

.page-about .about-timeline__year {
  margin: 0;
  align-self: start;
  justify-self: start;
  position: relative;
  z-index: 1;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--wc-gold-dark);
  background: var(--wc-gold-light);
  border: 1px solid var(--wc-gold);
  border-left: 3px solid var(--wc-gold);
  padding: 4px 7px;
  margin-left: -1px;
  white-space: nowrap;
}

.page-about .about-timeline__body {
  padding-top: 2px;
}

.page-about .about-timeline__h {
  font-family: var(--wc-font-serif);
  font-weight: 700;
  font-size: var(--wc-fs-body);
  line-height: 1.4;
  margin: 0 0 8px;
}

.page-about .about-timeline__body p {
  margin: 0;
  font-size: var(--wc-fs-note);
  line-height: 1.7;
  color: var(--wc-slate);
}

.page-about .about-timeline__body a {
  color: var(--wc-gold-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-timeline__body a:hover,
.page-about .about-timeline__body a:focus-visible {
  color: var(--wc-ink);
  background: var(--wc-gold-light);
}

/* ---------- 覆盖范围 ---------- */
.page-about .about-reach {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

.page-about .about-reach__text p {
  margin: 0 0 18px;
  font-size: var(--wc-fs-body);
  line-height: 1.7;
  color: var(--wc-charcoal);
}

.page-about .about-reach__list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  border-top: 1px solid var(--wc-ink);
}

.page-about .about-reach__list li {
  padding: 14px 0;
  border-bottom: 1px solid var(--about-hairline);
  font-size: var(--wc-fs-note);
  line-height: 1.65;
  color: var(--wc-slate);
}

.page-about .about-reach__list strong {
  display: block;
  font-size: var(--wc-fs-body);
  color: var(--wc-ink);
  margin-bottom: 4px;
}

.page-about .about-reach__figure {
  margin: 0;
  border: 1px solid var(--wc-ink);
  background: var(--wc-sand);
}

.page-about .about-reach__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-bottom: 1px solid var(--wc-ink);
}

.page-about .about-reach__figure figcaption {
  padding: 12px 16px;
  font-size: var(--wc-fs-num);
  line-height: 1.6;
  color: var(--wc-slate);
  background: var(--wc-paper);
}

/* ---------- 合作与认可 ---------- */
.page-about .about-partners {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  border-top: 1px solid var(--wc-ink);
  margin-bottom: 26px;
}

.page-about .about-partner {
  padding: 20px 0;
  border-bottom: 1px solid var(--about-hairline);
}

.page-about .about-partner__num {
  margin: 0 0 6px;
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--wc-gold-dark);
  line-height: 1;
}

.page-about .about-partner__name {
  font-family: var(--wc-font-serif);
  font-weight: 700;
  font-size: var(--wc-fs-sub);
  margin: 0 0 8px;
}

.page-about .about-partner p:last-child {
  margin: 0;
  font-size: var(--wc-fs-note);
  line-height: 1.7;
  color: var(--wc-slate);
}

.page-about .about-honor {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  background: var(--wc-ink);
  color: var(--wc-paper);
  padding: 24px 20px;
  border-left: 6px solid var(--wc-gold);
  margin-bottom: 28px;
}

.page-about .about-honor__year {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--wc-gold);
}

.page-about .about-honor__title {
  font-family: var(--wc-font-serif);
  font-weight: 700;
  font-size: var(--wc-fs-sub);
  line-height: 1.35;
  margin: 0 0 10px;
  color: var(--wc-paper);
}

.page-about .about-honor__body p {
  margin: 0;
  font-size: var(--wc-fs-note);
  line-height: 1.7;
  color: rgba(247, 245, 240, 0.78);
}

/* ---------- 页尾动作 ---------- */
.page-about .about-cta {
  padding: 36px 0 48px;
}

.page-about .about-cta__text {
  margin: 0 0 20px;
  font-size: var(--wc-fs-body);
  line-height: 1.7;
  color: var(--wc-charcoal);
  max-width: 52ch;
}

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

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

  .page-about .about-flow__notes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 32px;
  }

  .page-about .about-flow__note {
    border-bottom: 0;
  }

  .page-about .about-partners {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 32px;
  }

  .page-about .about-honor {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 0 20px;
    align-items: start;
  }

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

  .page-about .about-cover__fact {
    display: block;
    padding: 16px 20px 16px 0;
    border-bottom: 0;
    border-right: 1px solid var(--about-hairline);
  }

  .page-about .about-cover__fact-num {
    display: block;
    margin-bottom: 6px;
  }

  .page-about .about-cover__fact-txt {
    display: block;
  }
}

@media (min-width: 900px) {
  .page-about .about-cover {
    padding: 36px 0 56px;
  }

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

  .page-about .about-role__more {
    max-height: 0;
    opacity: 0;
  }

  .page-about .about-role:hover,
  .page-about .about-role:focus-visible,
  .page-about .about-role:focus-within {
    background: var(--wc-gold-light);
  }

  .page-about .about-role:hover .about-role__more,
  .page-about .about-role:focus-visible .about-role__more,
  .page-about .about-role:focus-within .about-role__more {
    max-height: 320px;
    opacity: 1;
  }

  .page-about .about-timeline__item {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 0 28px;
    padding-bottom: 34px;
  }

  .page-about .about-reach {
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 40px;
    align-items: start;
  }

  .page-about .about-chapter {
    padding: 52px 0 46px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-ledger__grid {
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 0 56px;
  }

  .page-about .about-rail {
    display: block;
    position: sticky;
    top: 108px;
    align-self: start;
    padding: 52px 0 0;
  }

  .page-about .about-rail__title {
    margin: 0 0 12px;
    font-size: var(--wc-fs-num);
    letter-spacing: 0.18em;
    color: var(--wc-gray);
  }

  .page-about .about-rail__list {
    list-style: none;
    margin: 0;
    padding: 0;
    border-top: 1px solid var(--wc-ink);
  }

  .page-about .about-rail__item {
    border-bottom: 1px solid var(--about-hairline);
  }

  .page-about .about-rail__link {
    display: flex;
    align-items: baseline;
    gap: 10px;
    padding: 11px 0;
    font-size: var(--wc-fs-note);
    color: var(--wc-slate);
    text-decoration: none;
    transition: color 0.18s var(--wc-ease), padding-left 0.18s var(--wc-ease);
  }

  .page-about .about-rail__link .wc-mono {
    font-size: var(--wc-fs-num);
    letter-spacing: 0.12em;
    color: var(--wc-gold-dark);
  }

  .page-about .about-rail__link:hover,
  .page-about .about-rail__link:focus-visible {
    color: var(--wc-ink);
    padding-left: 6px;
  }

  .page-about .about-rail__link:focus-visible {
    outline: 2px solid var(--wc-gold);
    outline-offset: 2px;
  }
}

@media (min-width: 1180px) {
  .page-about .about-reach {
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 48px;
  }

  .page-about .about-honor {
    grid-template-columns: 112px minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-role,
  .page-about .about-role__more,
  .page-about .about-rail__link {
    transition: none;
  }
}
<<<END>>>